In accordance with the Seismo-Geothermics theory about methods of intracrustal strong earthquake and volcano prediction, we use the ANSS earthquake catalogue from the Northern California earthquake data center and the...In accordance with the Seismo-Geothermics theory about methods of intracrustal strong earthquake and volcano prediction, we use the ANSS earthquake catalogue from the Northern California earthquake data center and the EMSC earthquake catalogue from the European-Mediterranean Seismological Centre to study the seismic activities of the Turkish Branch Seismic Cone in the Mediterranean Seismic Cone and the following Aegean Sea Seismic Cone, and show reproduction through graphics and animation, the seismogenic process and seismogenic mechanism of the earthquake Mw6.9 on May 24,2014 innorthern Aegean Sea. It was concluded that the energy of strong earthquake of magnitude around7 inAegean Seawas probably from energy transfer and accumulation in deep mantle and incentive lithosphere in the way of wave pattern, and then the strong earthquake occurs suddenly in search of the weak parts of the surface structure. The purpose of this paper is to open a hole in the traditional seismic genesis, and it is beneficial to the further research on the theory and method of earthquake prediction. It is our first attempt to study this case and it needs further examination. In this paper, we divide the Turkish Branch Seismic Cone of the Mediterranean Seismic Cone into 4 tertiary seismic cones, and we show a preliminary seismo-tectonic model of Aegean region. It will be conducive to seismic monitoring and earthquake prediction research inGreece,Turkey,RomaniaandPolandregions. At present, the world’s earthquake prediction has little effect, and it even tends to be not cognitive. Innovative thinking is the only way out.展开更多
Based on detailed geological and geomorphological mapping, sampling and micro-palaeontological determinations, both of the alpine and neogene formations, new data have been derived for Spetses Island (SW Aegean). The ...Based on detailed geological and geomorphological mapping, sampling and micro-palaeontological determinations, both of the alpine and neogene formations, new data have been derived for Spetses Island (SW Aegean). The applied methodology provided results on the paleogeographic evolution for Spetses Island and the nearby land of Argolida peninsula as well. Based mainly on characteristic nannofossils, a Miocene age of the post-alpine formations is determined. It is the first time that miocene formations have been identified, not only in Spetses Island and Argolida, but in the whole area of Peloponnesus, where only Plio-pleistocene deposits have been described. This work also leads to the conclusion that Spetses Island is attached to the Argolida peninsula, forming an independent paleogeographic unit since Upper Miocene.展开更多
On January 29, the 2019 "Happy Chinese New Year" cultural exchange activity was held in Athens, the capital city of Greece. Beijing Dance Academy, China Longyun Martial Arts Troupe, the Northern Kunqu Opera ...On January 29, the 2019 "Happy Chinese New Year" cultural exchange activity was held in Athens, the capital city of Greece. Beijing Dance Academy, China Longyun Martial Arts Troupe, the Northern Kunqu Opera Theatre, China National Acrobatics Troupe, and Beijing National Traditional Orchestra presented excellent performances for vips, including folk music, martial arts, dance, acrobatics, and Kunqu Opera.展开更多
Greece as a significant tourist destination showed a considerable increase （5.1%） in tourist arrivals in 2016, despite intense geopolitical upheaval, especially in the area of South-East Aegean. It is noteworthy tha...Greece as a significant tourist destination showed a considerable increase （5.1%） in tourist arrivals in 2016, despite intense geopolitical upheaval, especially in the area of South-East Aegean. It is noteworthy that the main volume of tourism proceeds in Greece was generated by its insular regions, despite the intense problems faced by insularity, and by the insular Region of Southern Aegean in particular, despite the heavy refugee flows due to its geopolitical position. However, how is insularity affected by the new hyper-taxation of the islands through the increase of value added tax in insular local development and tourism？ Is insular economy strong enough to withstand the increased and intensely varying international challenges？ In this paper, after realistically depicting the official and published national tourism results for 2016, it is presented the immediate policy, institutional and destination management actions required in the Region of Southem Aegean so that it might be able to respond adequately to the new European or global tourism challenges, and act as the steam engine of the Greek tourism, pulling the broader Greek tourism development forward.展开更多
The Plio-Quaternary deformation pattern of the northern Aegean and south Balkan regions is interpreted as an effect of the interaction between the Anatolian-Aegean-Pelagonian system (Tethyan belt), undergoing westward...The Plio-Quaternary deformation pattern of the northern Aegean and south Balkan regions is interpreted as an effect of the interaction between the Anatolian-Aegean-Pelagonian system (Tethyan belt), undergoing westward extrusion and strong deformation, and the surrounding plates (Nubia, Europe and Adriatic). Since the middle-late Miocene, the collision of the Tethyan belt with the continental Adriatic domain has caused strong E-W shortening in the outer Hellenides and Albanides, also involving the southward extrusion of the Peloponnesus wedge, at the expense of the Ionian oceanic domain. The roughly E-W extension recognized in the western South Balkan zones (Macedonia and eastern Albania) is related to the divergence between the Pelagonian belt (Albanides and Hellenides) and the Rhodope-Moesia domain. Stressed by the westward displacement of the central Anatolian plateau and by the southward bowing of the Cycladic Arc, the northern Aegean zone has contemporaneously undergone E-W compression and N-S extension, which has generated a series of dextral shear faults, delimiting a number of slats. The westward displacement and deformation of such slats can explain the morphological features of the northern Aegean zone. During this phase, the push of the central Anatolian plateau also caused the separation of the Rhodope massif from the Moesian European domain, with the consequent formation of the upper Thrace basin. This hypothesis can explain the Plio-Quaternary compressional deformations recognized in a sector of the North Anatolian fault system, the Ganos-Gelibolu zone. The proposed geodynamic/tectonic interpretation may help to explain some features of the time-space distribution of major earthquakes in the study area.展开更多
Purpose: The evaluation of the patients with clefts;the number, type, distribution by gender, etiological factors in Aegean region in Turkey between the years 2000 to 2011. Material and Method: The patients with cleft...Purpose: The evaluation of the patients with clefts;the number, type, distribution by gender, etiological factors in Aegean region in Turkey between the years 2000 to 2011. Material and Method: The patients with clefts who referred to Ege University from different cities were evaluated. The number of the clefts, the type of the clefts, and the causative etiological factors which were known, were recorded for each year separately, from 2000 to 2011. At the same time, the distribution of the gender was made for each year. Chi-square test is used for the statistical evaluation. Results: According to the results of the study, the numbers of the patients with clefts were increased day by day. Totally 741 (49.6% female, 50.4% male) patients with clefts were identified. Unilateral complete cleft lip and palate appeared in the left side was seen more in males (23.8%), while seconder palate cleft was seen more in females (16.7%). Drugs, which were used in the first trimester of the pregnancy, were the most seen etiological factors for the clefts (42.5%), while genetic was 23.3% only. Conclusion: The prevention for one of the mostly seen congenital anomaly;cleft lip and palate is still unknown. For this reason, the determination of the newborn babies with cleft lip and palate has an important role in order to give these patients more effective treatment.展开更多
The current status of marine poisonous fish species ranging in the Aegean Sea coastline in Turkey were introduced.Turkey is a peninsula surrounded by seas with different ecological features on three sides.The total le...The current status of marine poisonous fish species ranging in the Aegean Sea coastline in Turkey were introduced.Turkey is a peninsula surrounded by seas with different ecological features on three sides.The total length of shoreline is 8333 km including the islands.The total number of fish species in Turkish seas is 512,of which 449 live in the Aegean Sea followed by the Mediterranean Sea(441 species),the Marmara Sea(257 species)and the Black Sea(154species).On the Aegean Sea coasts,the richest sea regarding fish diversity,the number of poisonous fish species is also high.This mini-review revealed 51 poisonous fish species belonging to 14 families in the Turkish Aegean Sea.On the Aegean Sea coasts poisonous fish species can be categorized into three groups:(i)Fish that contain venomous spines on the tail or on the operculum(ii)Fish that carry poisonous bite and(iii)Fish having poisonous flesh or liver.Poisoning fish that contain venomous spines on the tail or on the operculum mostly are dangerous because of their poisonous thorns whereas the passive poisonous fish species poison when they are eaten.These toxins can cause morbidity and rarely,mortality in humans.Apart from these,swallowing the blood of species such as European eel Anguilla anguilla and European conger Conger conger might also cause poisoning.Besides,as there has been an invasion of puffer fish especially on the Turkish Mediterranean and Aegean coasts in recent years,there is a danger in question.Thus,it is very important to particularly draw attention to these fish on the Turkish coasts.展开更多
The average values of the seasonal flesh biochemical composition(%)of the pearl oyster Pinctada imbricata radiata originated form 2 sampling sites,the gulfs of Evoikos(E)and Saronikos(S)in the Western Aegean Sea,showe...The average values of the seasonal flesh biochemical composition(%)of the pearl oyster Pinctada imbricata radiata originated form 2 sampling sites,the gulfs of Evoikos(E)and Saronikos(S)in the Western Aegean Sea,showed that is rich in proteins(64.00±1.86-(E),64.67±2.95-(S))with low fat content(10.96±1.04-(E),11.86±1.13-(S))and carbohydrates(13.29±2.48-(E),9.94±4.32(S)).The condition index ranged from 26.16%±5.04 in the autumn in(E),to 44.73%±7.50 in the summer in(S).The meat yield varied from 20.49%±3.20%in the summer in(E)to 30.73%±3.47%in the summer in(S).Both results demonstrate the high nutritional profile of the pearl oyster,supporting its suitability as a potential new Mediterranean seafood source for human consumption.展开更多
Objective:To determine the fecundity of Boops boops(B.boops)from Aegean Sea coast of Turkey.Methods:A total of 470 specimens of B.boops were collected monthly from November in 2008 to October of 2009 in Izmir Bay(cent...Objective:To determine the fecundity of Boops boops(B.boops)from Aegean Sea coast of Turkey.Methods:A total of 470 specimens of B.boops were collected monthly from November in 2008 to October of 2009 in Izmir Bay(central Aegean Sea).Total length and total weight of each fish were measured and the maturity stages of gonads were determined.About 30 mature ovariums were taken to determine fecundity and oocysts were counted by using gravimetric method.Results:About 210 were females(44.7%)and 226 males(48.1%)while 34(7.2%)were hermafrodite in terms of sexuality with sex ratio(female:male)of 0.93:1.00.The fecundity of the bogue was assessed by the gravimetric method with 30 ovaries from females between the total length of 19.6 and 27.6 cm[(mean:23.5±2.1)cm].Estimates of total fecundity varied between 33072 and 66123 oocytes(mean:49008±8826)and fecundity-total length,fecundity-weight relationships were expressed as:F=8207.6e^(0.075TL),F=30297e^(0.003TW)respectively.Conclusions:The results of the study will contribute to the reproductive biology of B.boops and will be useful for management of fisheries.展开更多
Comparing mitochondrial and genomic phylogenies is an essential tool for investigating speciation processes,because each genome carries different inheritance properties and evolutionary characteristics.Furthermore,mit...Comparing mitochondrial and genomic phylogenies is an essential tool for investigating speciation processes,because each genome carries different inheritance properties and evolutionary characteristics.Furthermore,mitonuclear discordance may arise from ecological adaptation,historic isolation,population size changes,and sex-biased dispersal.Closely related taxa are expected to experience gene flow;however,this may not be true for insular populations or populations isolated in refugia.The four-lined snake Elaphe quatuorlineata has a fragmented distribution,separating populations of the Italian and Balkan Peninsulas,whereas several insular Aegean populations of significantly smaller body size(Cyclades island group and Skyros Island,Greece)are currently considered distinct subspecies.We constructed the species-tree phylogeny of this species utilizing genome-wide single nucleotide polymorphisms and a gene-tree based on complete cytochrome b sequences,aiming to detect convergence and discrepancies between biparentally and maternally inherited genomes.Population structuring,phylogenetic patterns and migration events among geographically defined lineages supported our hypothesis of isolation in multiple sub-refugia.Where biogeographical barriers did not restrict subsequent dispersal,extensive genetic exchange occurred between mainland Balkan populations.This process has led to the mitochondrial sweep of an ancestral mitolineage that survived only in peripheral(East Greece)and insular populations(North Cyclades and Skyros).The Central Cyclades represent an ancient lineage for both molecular markers that emerged almost 3.3 Mya.Considering their distinct morphology,insular E.quatuorlineata populations should be the future focus of an extensive sampling,especially since the mitonuclear discordance observed in this species could be related to ecological adaptations,such as the island-dwarfism phenomenon.展开更多
The present study of Anisian(Middle Triassic)conodonts from the Kocaeli Peninsula(western Turkey)encompasses over 10 species of the families Gondolellidae and Gladigondolellidae,providing Early and Middle Triassic tim...The present study of Anisian(Middle Triassic)conodonts from the Kocaeli Peninsula(western Turkey)encompasses over 10 species of the families Gondolellidae and Gladigondolellidae,providing Early and Middle Triassic time constraints,Chiosella timorensis(Nogami,1968);Cornudina oezdemirae Gedik,1975;Gladigondolella tethydis(Huckriede,1958);Neostrachanognathus tahoensis Koike,1998;Paragondolella aegaea(Bender,1970);Paragondolella bulgarica Budurov and Stefanov,1975;Nicoraella kockeli(Tatge,1956);P.hanbulogi(Sudar and Budurov,1979),and Gladigondolella sp.A.Newly established are Paragondolella hirschii n.sp.Kilic and Budurov;P.praecornuta n.sp.Kilic ,Budurov,Petrunova and Mirauta;and P.ebruae n.sp.K?l??.The Kocaeli Anisian conodonts show a faunal affinity with Bulgaria.The present Anisian fauna is characteristic of the Tethys.The strong homeomorphy that characterizes the Anisian in western North America is discussed.展开更多
The majority of studies investigating the effects of landscape composition and configuration on bee populations have been conducted in regions of intensive agricultural production, ignoring regions which are dominated...The majority of studies investigating the effects of landscape composition and configuration on bee populations have been conducted in regions of intensive agricultural production, ignoring regions which are dominated by seminatural habitats, such as the islands of the Aegean Archipelago. In addition, research so far has focused on the landscape impacts on bees sampled in cropped fields while the landscape effects on bees inhabiting seminatural habitats are understudied. Here, we investigate the impact of the landscape on wild bee assemblages in 66 phryganic （low scrubland） communities on 8 Aegean islands. We computed landscape metrics （total area and total perimete^area ratio） in 4 concentric circles （250, 500, 750, and 1000 m） around the center of each bee sampling site including 3 habitat groups （namely phrygana, cultivated land, and natural forests）. We further measured the local flower cover in 25 quadrats distributed randomly at the center of each sampling site. We found that the landscape scale is more important than the local scale in shaping abundance and species richness of bees. Furthermore, habitat configuration was more important than the total area of habitats, probably because it affects bees＇ movement across the landscape. Phrygana and natural forests had a positive effect on bee demographics, while cultivated land had a negative effect. This demonstrates that phryganic specialists drive bee assemblages in these seminatural landscapes. This finding, together with the shown importance of landscape scale, should be considered for the management of wild bees with special emphasis placed on the spatial configuration of seminatural habitats.展开更多
Crete with its complex geomorphological history is the island with the highest number of endemism observed in animal and plant taxa throughout the Aegean archipelago.While other groups of organisms within Crete are we...Crete with its complex geomorphological history is the island with the highest number of endemism observed in animal and plant taxa throughout the Aegean archipelago.While other groups of organisms within Crete are well-studied,the freshwater gastropod fauna still remains poorly investigated.Bythinella and Pseudamnicola,are 2 genera of freshwater springsnails,both present on the island,inhabiting springs and other freshwater habitats.Here,we conduct a comprehensive study on the distribution of the different genetic lineages of the 2 gastropod genera in order to assess the mode of their differentiation on the island and infer the actual number of species present in the island.Towards these aims,sequence data from the mitochondrial gene were used and analyzed within a phylogenetic framework.For Bythinella,our results strongly support at least 5 delineated Bythinella spp.inhabiting Crete,which correspond to the already described species from previous studies with the addition of a new one.Bythinella analyses reveal an old time-frame of differentiation with vicariant phenomena being more likely the main drivers shaping the present-day distribution of the genus’genetic lineages.For Pseudamnicola,our data indicate the presence of at least 2 delineated Pseudamnicola spp.with a differentiation more consistent to an isolation-by-distance pattern of a relatively recent origin.Dispersion processes followed by isolation of the populations and/or recent speciation,seem to be the underlying process for the current distribution of Pseudamnicola lineages.展开更多
Objective:To determine the shallow water fish species richness ofÇanakkale and to analyse the spatiotemporal variations of these fish assemblages.Methods:Samplings were carried out monthly with a beach seine betw...Objective:To determine the shallow water fish species richness ofÇanakkale and to analyse the spatiotemporal variations of these fish assemblages.Methods:Samplings were carried out monthly with a beach seine between January and December 2007.Samples were collected from 6 stations(No.1,2,3,4,5,6).Stations 1 and 4 located in theÇanakkale Strait,2 and 5 in North Aegean Sea,3 and 6 in Sea of Marmara.Results:A total of 112 fish species were sampled and the two most common species were Atherina boyeri and Pomatoschistus marmoratus.A total of 93 species were sampled in theÇanakkale Strait,85 in the Aegean Sea,and 77 in the Sea of Marmara.Shannon diversity index was the highest in the Aegean Sea.Dominant species were caused significant differences of both regional and seasonal fish assemblage fluctuations.Species richness and abundances decreased significantly in winter.Although more species were caught at night and a greater abundance of fishes was obtained during the day,no significant differences were found between day and night in terms of species richness and abundance.Conclusions:The results supported the biogeographical differences between the Aegean Sea,theÇanakkale Strait and the Sea of Marmara in terms of the shallow water fish community.The inventory in the current study can serve as baseline data prior to management strategies to ensure sustainable conservation of the area.展开更多
文摘In accordance with the Seismo-Geothermics theory about methods of intracrustal strong earthquake and volcano prediction, we use the ANSS earthquake catalogue from the Northern California earthquake data center and the EMSC earthquake catalogue from the European-Mediterranean Seismological Centre to study the seismic activities of the Turkish Branch Seismic Cone in the Mediterranean Seismic Cone and the following Aegean Sea Seismic Cone, and show reproduction through graphics and animation, the seismogenic process and seismogenic mechanism of the earthquake Mw6.9 on May 24,2014 innorthern Aegean Sea. It was concluded that the energy of strong earthquake of magnitude around7 inAegean Seawas probably from energy transfer and accumulation in deep mantle and incentive lithosphere in the way of wave pattern, and then the strong earthquake occurs suddenly in search of the weak parts of the surface structure. The purpose of this paper is to open a hole in the traditional seismic genesis, and it is beneficial to the further research on the theory and method of earthquake prediction. It is our first attempt to study this case and it needs further examination. In this paper, we divide the Turkish Branch Seismic Cone of the Mediterranean Seismic Cone into 4 tertiary seismic cones, and we show a preliminary seismo-tectonic model of Aegean region. It will be conducive to seismic monitoring and earthquake prediction research inGreece,Turkey,RomaniaandPolandregions. At present, the world’s earthquake prediction has little effect, and it even tends to be not cognitive. Innovative thinking is the only way out.
文摘Based on detailed geological and geomorphological mapping, sampling and micro-palaeontological determinations, both of the alpine and neogene formations, new data have been derived for Spetses Island (SW Aegean). The applied methodology provided results on the paleogeographic evolution for Spetses Island and the nearby land of Argolida peninsula as well. Based mainly on characteristic nannofossils, a Miocene age of the post-alpine formations is determined. It is the first time that miocene formations have been identified, not only in Spetses Island and Argolida, but in the whole area of Peloponnesus, where only Plio-pleistocene deposits have been described. This work also leads to the conclusion that Spetses Island is attached to the Argolida peninsula, forming an independent paleogeographic unit since Upper Miocene.
文摘On January 29, the 2019 "Happy Chinese New Year" cultural exchange activity was held in Athens, the capital city of Greece. Beijing Dance Academy, China Longyun Martial Arts Troupe, the Northern Kunqu Opera Theatre, China National Acrobatics Troupe, and Beijing National Traditional Orchestra presented excellent performances for vips, including folk music, martial arts, dance, acrobatics, and Kunqu Opera.
文摘Greece as a significant tourist destination showed a considerable increase （5.1%） in tourist arrivals in 2016, despite intense geopolitical upheaval, especially in the area of South-East Aegean. It is noteworthy that the main volume of tourism proceeds in Greece was generated by its insular regions, despite the intense problems faced by insularity, and by the insular Region of Southern Aegean in particular, despite the heavy refugee flows due to its geopolitical position. However, how is insularity affected by the new hyper-taxation of the islands through the increase of value added tax in insular local development and tourism？ Is insular economy strong enough to withstand the increased and intensely varying international challenges？ In this paper, after realistically depicting the official and published national tourism results for 2016, it is presented the immediate policy, institutional and destination management actions required in the Region of Southem Aegean so that it might be able to respond adequately to the new European or global tourism challenges, and act as the steam engine of the Greek tourism, pulling the broader Greek tourism development forward.
文摘The Plio-Quaternary deformation pattern of the northern Aegean and south Balkan regions is interpreted as an effect of the interaction between the Anatolian-Aegean-Pelagonian system (Tethyan belt), undergoing westward extrusion and strong deformation, and the surrounding plates (Nubia, Europe and Adriatic). Since the middle-late Miocene, the collision of the Tethyan belt with the continental Adriatic domain has caused strong E-W shortening in the outer Hellenides and Albanides, also involving the southward extrusion of the Peloponnesus wedge, at the expense of the Ionian oceanic domain. The roughly E-W extension recognized in the western South Balkan zones (Macedonia and eastern Albania) is related to the divergence between the Pelagonian belt (Albanides and Hellenides) and the Rhodope-Moesia domain. Stressed by the westward displacement of the central Anatolian plateau and by the southward bowing of the Cycladic Arc, the northern Aegean zone has contemporaneously undergone E-W compression and N-S extension, which has generated a series of dextral shear faults, delimiting a number of slats. The westward displacement and deformation of such slats can explain the morphological features of the northern Aegean zone. During this phase, the push of the central Anatolian plateau also caused the separation of the Rhodope massif from the Moesian European domain, with the consequent formation of the upper Thrace basin. This hypothesis can explain the Plio-Quaternary compressional deformations recognized in a sector of the North Anatolian fault system, the Ganos-Gelibolu zone. The proposed geodynamic/tectonic interpretation may help to explain some features of the time-space distribution of major earthquakes in the study area.
文摘Purpose: The evaluation of the patients with clefts;the number, type, distribution by gender, etiological factors in Aegean region in Turkey between the years 2000 to 2011. Material and Method: The patients with clefts who referred to Ege University from different cities were evaluated. The number of the clefts, the type of the clefts, and the causative etiological factors which were known, were recorded for each year separately, from 2000 to 2011. At the same time, the distribution of the gender was made for each year. Chi-square test is used for the statistical evaluation. Results: According to the results of the study, the numbers of the patients with clefts were increased day by day. Totally 741 (49.6% female, 50.4% male) patients with clefts were identified. Unilateral complete cleft lip and palate appeared in the left side was seen more in males (23.8%), while seconder palate cleft was seen more in females (16.7%). Drugs, which were used in the first trimester of the pregnancy, were the most seen etiological factors for the clefts (42.5%), while genetic was 23.3% only. Conclusion: The prevention for one of the mostly seen congenital anomaly;cleft lip and palate is still unknown. For this reason, the determination of the newborn babies with cleft lip and palate has an important role in order to give these patients more effective treatment.
文摘The current status of marine poisonous fish species ranging in the Aegean Sea coastline in Turkey were introduced.Turkey is a peninsula surrounded by seas with different ecological features on three sides.The total length of shoreline is 8333 km including the islands.The total number of fish species in Turkish seas is 512,of which 449 live in the Aegean Sea followed by the Mediterranean Sea(441 species),the Marmara Sea(257 species)and the Black Sea(154species).On the Aegean Sea coasts,the richest sea regarding fish diversity,the number of poisonous fish species is also high.This mini-review revealed 51 poisonous fish species belonging to 14 families in the Turkish Aegean Sea.On the Aegean Sea coasts poisonous fish species can be categorized into three groups:(i)Fish that contain venomous spines on the tail or on the operculum(ii)Fish that carry poisonous bite and(iii)Fish having poisonous flesh or liver.Poisoning fish that contain venomous spines on the tail or on the operculum mostly are dangerous because of their poisonous thorns whereas the passive poisonous fish species poison when they are eaten.These toxins can cause morbidity and rarely,mortality in humans.Apart from these,swallowing the blood of species such as European eel Anguilla anguilla and European conger Conger conger might also cause poisoning.Besides,as there has been an invasion of puffer fish especially on the Turkish Mediterranean and Aegean coasts in recent years,there is a danger in question.Thus,it is very important to particularly draw attention to these fish on the Turkish coasts.
基金the project“Commercial exploitation of the pearl oyster Pinctada imbricata radiata by adding value through the development of processed products(Code MIS:5010850)the“Innovation in Fisheries”EU-Greece Operational Program of Fisheries,EPAL 2014-2020.
文摘The average values of the seasonal flesh biochemical composition(%)of the pearl oyster Pinctada imbricata radiata originated form 2 sampling sites,the gulfs of Evoikos(E)and Saronikos(S)in the Western Aegean Sea,showed that is rich in proteins(64.00±1.86-(E),64.67±2.95-(S))with low fat content(10.96±1.04-(E),11.86±1.13-(S))and carbohydrates(13.29±2.48-(E),9.94±4.32(S)).The condition index ranged from 26.16%±5.04 in the autumn in(E),to 44.73%±7.50 in the summer in(S).The meat yield varied from 20.49%±3.20%in the summer in(E)to 30.73%±3.47%in the summer in(S).Both results demonstrate the high nutritional profile of the pearl oyster,supporting its suitability as a potential new Mediterranean seafood source for human consumption.
文摘Objective:To determine the fecundity of Boops boops(B.boops)from Aegean Sea coast of Turkey.Methods:A total of 470 specimens of B.boops were collected monthly from November in 2008 to October of 2009 in Izmir Bay(central Aegean Sea).Total length and total weight of each fish were measured and the maturity stages of gonads were determined.About 30 mature ovariums were taken to determine fecundity and oocysts were counted by using gravimetric method.Results:About 210 were females(44.7%)and 226 males(48.1%)while 34(7.2%)were hermafrodite in terms of sexuality with sex ratio(female:male)of 0.93:1.00.The fecundity of the bogue was assessed by the gravimetric method with 30 ovaries from females between the total length of 19.6 and 27.6 cm[(mean:23.5±2.1)cm].Estimates of total fecundity varied between 33072 and 66123 oocytes(mean:49008±8826)and fecundity-total length,fecundity-weight relationships were expressed as:F=8207.6e^(0.075TL),F=30297e^(0.003TW)respectively.Conclusions:The results of the study will contribute to the reproductive biology of B.boops and will be useful for management of fisheries.
基金P.K.was supported by the European Union's Horizon 2020 research and innovation program under the Marie Sklodowska-Curie Grant[grant number:656006,project acronym:CoPhyMed]This work used the Vincent J.Coates Genomics Sequencing Laboratory at UC Berkeley,supported by NIH S10 OD018174 Instrumentation Grant.
文摘Comparing mitochondrial and genomic phylogenies is an essential tool for investigating speciation processes,because each genome carries different inheritance properties and evolutionary characteristics.Furthermore,mitonuclear discordance may arise from ecological adaptation,historic isolation,population size changes,and sex-biased dispersal.Closely related taxa are expected to experience gene flow;however,this may not be true for insular populations or populations isolated in refugia.The four-lined snake Elaphe quatuorlineata has a fragmented distribution,separating populations of the Italian and Balkan Peninsulas,whereas several insular Aegean populations of significantly smaller body size(Cyclades island group and Skyros Island,Greece)are currently considered distinct subspecies.We constructed the species-tree phylogeny of this species utilizing genome-wide single nucleotide polymorphisms and a gene-tree based on complete cytochrome b sequences,aiming to detect convergence and discrepancies between biparentally and maternally inherited genomes.Population structuring,phylogenetic patterns and migration events among geographically defined lineages supported our hypothesis of isolation in multiple sub-refugia.Where biogeographical barriers did not restrict subsequent dispersal,extensive genetic exchange occurred between mainland Balkan populations.This process has led to the mitochondrial sweep of an ancestral mitolineage that survived only in peripheral(East Greece)and insular populations(North Cyclades and Skyros).The Central Cyclades represent an ancient lineage for both molecular markers that emerged almost 3.3 Mya.Considering their distinct morphology,insular E.quatuorlineata populations should be the future focus of an extensive sampling,especially since the mitonuclear discordance observed in this species could be related to ecological adaptations,such as the island-dwarfism phenomenon.
文摘The present study of Anisian(Middle Triassic)conodonts from the Kocaeli Peninsula(western Turkey)encompasses over 10 species of the families Gondolellidae and Gladigondolellidae,providing Early and Middle Triassic time constraints,Chiosella timorensis(Nogami,1968);Cornudina oezdemirae Gedik,1975;Gladigondolella tethydis(Huckriede,1958);Neostrachanognathus tahoensis Koike,1998;Paragondolella aegaea(Bender,1970);Paragondolella bulgarica Budurov and Stefanov,1975;Nicoraella kockeli(Tatge,1956);P.hanbulogi(Sudar and Budurov,1979),and Gladigondolella sp.A.Newly established are Paragondolella hirschii n.sp.Kilic and Budurov;P.praecornuta n.sp.Kilic ,Budurov,Petrunova and Mirauta;and P.ebruae n.sp.K?l??.The Kocaeli Anisian conodonts show a faunal affinity with Bulgaria.The present Anisian fauna is characteristic of the Tethys.The strong homeomorphy that characterizes the Anisian in western North America is discussed.
文摘The majority of studies investigating the effects of landscape composition and configuration on bee populations have been conducted in regions of intensive agricultural production, ignoring regions which are dominated by seminatural habitats, such as the islands of the Aegean Archipelago. In addition, research so far has focused on the landscape impacts on bees sampled in cropped fields while the landscape effects on bees inhabiting seminatural habitats are understudied. Here, we investigate the impact of the landscape on wild bee assemblages in 66 phryganic （low scrubland） communities on 8 Aegean islands. We computed landscape metrics （total area and total perimete^area ratio） in 4 concentric circles （250, 500, 750, and 1000 m） around the center of each bee sampling site including 3 habitat groups （namely phrygana, cultivated land, and natural forests）. We further measured the local flower cover in 25 quadrats distributed randomly at the center of each sampling site. We found that the landscape scale is more important than the local scale in shaping abundance and species richness of bees. Furthermore, habitat configuration was more important than the total area of habitats, probably because it affects bees＇ movement across the landscape. Phrygana and natural forests had a positive effect on bee demographics, while cultivated land had a negative effect. This demonstrates that phryganic specialists drive bee assemblages in these seminatural landscapes. This finding, together with the shown importance of landscape scale, should be considered for the management of wild bees with special emphasis placed on the spatial configuration of seminatural habitats.
文摘Crete with its complex geomorphological history is the island with the highest number of endemism observed in animal and plant taxa throughout the Aegean archipelago.While other groups of organisms within Crete are well-studied,the freshwater gastropod fauna still remains poorly investigated.Bythinella and Pseudamnicola,are 2 genera of freshwater springsnails,both present on the island,inhabiting springs and other freshwater habitats.Here,we conduct a comprehensive study on the distribution of the different genetic lineages of the 2 gastropod genera in order to assess the mode of their differentiation on the island and infer the actual number of species present in the island.Towards these aims,sequence data from the mitochondrial gene were used and analyzed within a phylogenetic framework.For Bythinella,our results strongly support at least 5 delineated Bythinella spp.inhabiting Crete,which correspond to the already described species from previous studies with the addition of a new one.Bythinella analyses reveal an old time-frame of differentiation with vicariant phenomena being more likely the main drivers shaping the present-day distribution of the genus’genetic lineages.For Pseudamnicola,our data indicate the presence of at least 2 delineated Pseudamnicola spp.with a differentiation more consistent to an isolation-by-distance pattern of a relatively recent origin.Dispersion processes followed by isolation of the populations and/or recent speciation,seem to be the underlying process for the current distribution of Pseudamnicola lineages.
基金Supported by the Scientific and Technological Research Council of Turkey(Grant No.106T123).
文摘Objective:To determine the shallow water fish species richness ofÇanakkale and to analyse the spatiotemporal variations of these fish assemblages.Methods:Samplings were carried out monthly with a beach seine between January and December 2007.Samples were collected from 6 stations(No.1,2,3,4,5,6).Stations 1 and 4 located in theÇanakkale Strait,2 and 5 in North Aegean Sea,3 and 6 in Sea of Marmara.Results:A total of 112 fish species were sampled and the two most common species were Atherina boyeri and Pomatoschistus marmoratus.A total of 93 species were sampled in theÇanakkale Strait,85 in the Aegean Sea,and 77 in the Sea of Marmara.Shannon diversity index was the highest in the Aegean Sea.Dominant species were caused significant differences of both regional and seasonal fish assemblage fluctuations.Species richness and abundances decreased significantly in winter.Although more species were caught at night and a greater abundance of fishes was obtained during the day,no significant differences were found between day and night in terms of species richness and abundance.Conclusions:The results supported the biogeographical differences between the Aegean Sea,theÇanakkale Strait and the Sea of Marmara in terms of the shallow water fish community.The inventory in the current study can serve as baseline data prior to management strategies to ensure sustainable conservation of the area.
