Angiosperms experienced one of the most remarkable radiations of land plants and are now the dominant autotrophs in terrestrial ecosystems.Recent phylogenomic studies based on large-scale data from plastid,mitochondri...Angiosperms experienced one of the most remarkable radiations of land plants and are now the dominant autotrophs in terrestrial ecosystems.Recent phylogenomic studies based on large-scale data from plastid,mitochondrial,or nuclear transcriptomes/genomes and increased taxon sampling have provided unprecedent resolution into the phylogeny of flowering plants.However,owing to ancient rapid radiations,the interrelationships among the five lineages of Mesangiospermae,the vast majority of angiosperms,remain contentious.Here we show that,although plastid and mitochondrial genomes lack sufficient phylogenetic signal for resolving deeper phylogeny,the relationships among five mesangiosperm lineages can be confidently resolved under better-fitting models using genome-scale data.According to our Bayesian cross-validation and model test in a maximum likelihood framework,siteheterogeneous models(e.g.,CAT-GTR+G4,LG+C20+F+G)outperform site-homogeneous or partition models often used in previous studies.Under site-heterogeneous models,the approximately unbiased test favored our preferred tree recovered from various datasets:Ceratophyllales(coontails)are robustly recovered as sister to monocots,and they together are sister to the clade comprising magnoliids,Chloranthales,and eudicots.Our phylogenomic analyses resolve the last enigma of the deeper phylogeny of angiosperms and emphasize the efficacy of modeling compositional heterogeneity in resolving rapid radiations of plants.展开更多
Most described Mesozoic ants belong to stem groups that existed only during the Cretaceous period.Previously,the earliest known crown ants were dated to the Turonian(Late Cretaceous,ca.94-90 million years ago(Ma))depo...Most described Mesozoic ants belong to stem groups that existed only during the Cretaceous period.Previously,the earliest known crown ants were dated to the Turonian(Late Cretaceous,ca.94-90 million years ago(Ma))deposits found in the USA,Kazakhstan,and Botswana.However,the recent discovery of an alate male ant in Kachin amber from the earliest Cenomanian(ca.99 Ma),representing a new genus and species,Antiquiformica alata,revises the narrative on ant diversification.Antiquiformica can be distinctly differentiated from all known male stem ants by its geniculate antennae with elongated scape,extending far beyond the occipital margin of the head and half the length of the funiculus,as well as its partly reduced forewing venation.Furthermore,the combination of a one-segmented waist with a well-developed node,elongated scape extending beyond the occipital margin,and reduced forewing venation,particularly the completely reduced m-cu and rs-m crossveins and absence of rm and mcu closed cells,firmly places the fossil within the extant subfamily Formicinae.Fourier transform infrared spectroscopy(FTIR)confirmed that the amber containing Antiquiformica alata originated from the Kachin mines in Myanmar.This discovery significantly revises our understanding of the early evolution of Formicinae.The presence of Antiquiformica in Cenomanian amber indicates that the subfamily Formicinae emerged at least by the start of the Late Cretaceous,with crown ants likely originating earlier during the earliest Cretaceous or possibly the Late Jurassic,although paleontological evidence is lacking to support the latter hypothesis.展开更多
The nuclear ribosomal ITS region and the chloroplast trnL-trnF (trnLF) intergenic region were se-quenced for 45 accessions of Paranephelius and six accessions of Pseudonoseris, the two genera of the subtribe Paranephe...The nuclear ribosomal ITS region and the chloroplast trnL-trnF (trnLF) intergenic region were se-quenced for 45 accessions of Paranephelius and six accessions of Pseudonoseris, the two genera of the subtribe Paranepheliinae (Liabeae, Asteraceae) distributed in the alpine regions of the Andes. This data set was used to estimate relationships between these genera and within each genus to aid in evaluating morphological variation and classification. Our results with both ITS and trnLF markers support the monophyly of subtribe Paranephelii-nae, and place Pseudonoseris discolor as the first diverged taxon sister to the clade containing Paranephelius. Pseudonoseris szyszylowiczii exhibited intraspecific divergence supporting intergeneric hybridization between Pseudonoseris and Paranephelius. Within Paranephelius, genetic divergence is low and not adequate to fully resolve phylogenetic relationships at the species level, but two genetically and morphologically recognizable groups were revealed by the ITS data. Several accessions possessing multiple ITS sequences represent putative hybrids between the two groups. These putative hybrids have caused some taxonomic confusion and difficulties in establishing species boundaries in Paranephelius. The divergence time estimates based on ITS sequences indi-cated that the stem of subtribe Paranepheliinae dates to 13 million years ago, but the diversification of the crown clade of the extant members began in the early Pleistocene or late Pliocene, perhaps associated with the uplift of the Andes and the climatic changes of global cooling.展开更多
Patterns of variation in the size of vulture foraging groups,and their ecological causes and consequences,remain litle explored despite strong links with the carrion recycling service that this key functional group pr...Patterns of variation in the size of vulture foraging groups,and their ecological causes and consequences,remain litle explored despite strong links with the carrion recycling service that this key functional group provides.We documented the group size-frequency pattern of Andean con-dors Vultur gryphus gathered to feed on 42 equine carcasses experimentally placed in Bolivia,between 2012 and 2019,along an elevation range of 1,300-4,500 m asl.Based on the location(altitude and latitude)of the foraging groups,we examined the relationship between their size and species'population parameters(size and trend),habitat conditions,and livestock carcass availability and predictability.Condors utilized a high frequency(93%)of carcasses forming groups that ranged from 1 to 80 individuals(mean=25,median=18)and shaped a"lazy-J curve"typical pattern of size-frequency distribution whereby few groups(5,12%)were large(>55 individuals)and most(21,50%)were relatively small(<19 individuals).Group size related to altitude in that most larger groups formed at lower sites(below c.3,000 m asl),likely following an altitudinal gradient whereby larger groups are more likely to form around larger carcasses(i.e.,cattle),which are more likely to occur at lower elevations.Regardless of population size,group size could be an adaptive response of condors via local enhancement for improving individual scavenging efficiency.Many information gaps on this topic still exist,thus we provide a set of questions to address them,especially amidst the unrestricted impacts of human activities that condition vulture survival globally.展开更多
A juvenile specimen of the black turtle, Chelonia mydas agassizii, was located in the shores of Cabo Tamar Island in the western entrance of the Strait of Magellan, Chile. A king crab angler found the specimen, and do...A juvenile specimen of the black turtle, Chelonia mydas agassizii, was located in the shores of Cabo Tamar Island in the western entrance of the Strait of Magellan, Chile. A king crab angler found the specimen, and donated it to the Río Seco Natural History Museum’s vertebrate collection for further studies and exhibition. Morphological measurements and a genetic analysis derived from an mtDNA fragment amplified and sequenced, suggest that this specimen corresponds to the species Chelonia mydas agassiizii and that it is closely related to the Galapagos Islands black turtle population. Possible influences of the El Ni？o Southern Oscillation phenomenon on this tropical species in the Eastern South Pacific Ocean are briefly discussed.展开更多
The fossil record of birds from Antarctica is concentrated in the James Ross Basin,located in north-east of the Antarctic Peninsula.Birds are here represented by an extensive Paleogene record of penguins(Sphenisciform...The fossil record of birds from Antarctica is concentrated in the James Ross Basin,located in north-east of the Antarctic Peninsula.Birds are here represented by an extensive Paleogene record of penguins(Sphenisciformes)and Cretaceous–Paleogene record of Anseriformes,followed by other groups with a minor representation(Procellariiformes,Falconiformes,and Pelagornithidae),and others previously assigned controversially to“Ratites”,Threskiornithidae,Charadriiformes,Gruiformes,Phoenicopteriformes,and Gaviiformes.We provide a complete update of these records,commenting on the importance of some of these remains for the evolution of the major clades.展开更多
Identity of the Chinese satyrine butterfly Palaeonympha avinoffi Schaus, 1927 has been uncertain since its description. The holotype is illustrated, and reasons are presented for considering it to represent the same s...Identity of the Chinese satyrine butterfly Palaeonympha avinoffi Schaus, 1927 has been uncertain since its description. The holotype is illustrated, and reasons are presented for considering it to represent the same species as Sinonympha amoena Lee, 1974, new synonym. Sinonympha avinoffi is a new combination. The systematic placement of Sinonympha is yet uncertain.展开更多
Studies of holoplanktonic polychaetes in the Tropical Eastern Pacific have focused on their systematics and distribution however, population responses related to climate variability are non-existent. Therefore, the pr...Studies of holoplanktonic polychaetes in the Tropical Eastern Pacific have focused on their systematics and distribution however, population responses related to climate variability are non-existent. Therefore, the present work described for the first time the influence of the climatic variability 2004-2012 on the holoplanktonic polychaetes populations, as well as their relationship to environmental variables. Species of the Alciopidae, Lopadorrhynchidae and Iospilidae families were identified from 85 samples collected in the Pacific Basin of Colombia, contrasting them with the presence of ENSO, and correlating them with the environmental variables of temperature, salinity and chlorophyll-α concentration. Of the 14 species identified, only Lopadorrhynchus cf. henseni and L. cf. brevis increased their densities under El Ni<span style="white-space:nowrap;"><span style="white-space:nowrap;">ño and correlated positively with temperature. Rhynchonereella cf. petersii correlated negatively with temperature;while R. cf. gracilis and Pelagobia cf. longicirrata were positively correlated with chlorophyll-α concentration and salinity, respectively. Additionally, with the first description of the environmental ranges of the 14 species identified for the Colombian Pacific basin, it was found that the most commons species presented broader environmental ranges. The results from the current research are consistent with previous studies in other regions of the Pacific and latitudes. The responses of the organisms suggest trophic and mobility trends that were not known for tropical holoplanktonic polychaete species.展开更多
Introduction:Deforestation significantly impacts large carnivores that depend on large tracts of interconnected forest habitat and that are sensitive to human activities.Understanding the relationship between habitat ...Introduction:Deforestation significantly impacts large carnivores that depend on large tracts of interconnected forest habitat and that are sensitive to human activities.Understanding the relationship between habitat use and spatial distribution of such species across human modified landscapes is critical when planning effective conservation strategies.This study assessed the presence of potential landscape connectivity thresholds resulting from habitat fragmentation associated with different deforestation patterns using a scale-based approach that links species-specific home ranges with the extent of anthropogenic activities.The objectives were(1)to quantify the spatial and temporal distribution of natural vegetation for five common deforestation patterns and(2)to evaluate the connectivity associated with these patterns and the existence of potential thresholds affecting jaguar dispersal.The Bolivian lowlands,located within jaguar conservation units,were analysed with landscape metrics to capture the spatial and temporal changes within deforested areas and to determine potential impact on jaguar connectivity and connectivity thresholds for dispersal.Results:Over the period of 1976–2005,the amount of natural vegetation has decreased by more than 40%in all locations with the biggest changes occurring between 1991 and 2000.Landscape spatial structure around jaguar locations showed that jaguars used areas with mean proportion of natural areas=83.14%(SE=3.72%),mean patch density=1.16 patches/100 ha(SE=0.28 patches/100 ha),mean patch area=616.95 ha(SE=172.89 ha)and mean edge density=705.27 m/ha(SE=182.19 m/ha).We observed strong fragmentation processes in all study locations,which has resulted in the connectivity of jaguar habitat decreasing to<20%by 2005.A connectivity threshold zone was observed when the proportion of natural vegetation was less than 58.4%(SE=1.3).Conclusions:Assessing fragmentation and connectivity for carnivores within the extent of human-modified landscapes proved to be an effective way to understand the changes caused by deforestation and their potential effects on large carnivore habitats.Our study highlights the importance of scale-based approaches for assessing current conservation challenges to protect large carnivores.展开更多
Male frogs emit stereotypical advertisement calls to attractmates and deter conspecific rivals.The evolution of these calls is thought to be linked to anatomical constraints and the acoustic characteristics of their s...Male frogs emit stereotypical advertisement calls to attractmates and deter conspecific rivals.The evolution of these calls is thought to be linked to anatomical constraints and the acoustic characteristics of their surroundings.The acoustic adaptation hypothesis(AAH)posits that species evolve calls that maximize propagation distance and reduce signal degradation in the environmentwhere they are emitted.We applied phylogenetic comparative analyses to study the association of body size,vegetation density,type of aquatic ecosystem,and calling site on the evolution of acoustic traits in Cophomantini,a large radiation of Neotropical treefrogs(Hylidae).We obtained and analyzed body size,acoustic,and habitat data from a total of 112 species(58%of Cophomantini),using themost inclusive available phylogeny.We found a significant negative correlation between peak frequency,body size,and calling site,but contrary to the predictions of the AAH,we did not find support for associations among call traits and environmental characteristics.Although spectral allometry is explained by an anatomical constraint,it could also be maintained by female choice.We recommend that future studies strive to incorporate factors such as female mate preferences,eavesdropping by predators or parasites,and genetic drift.展开更多
This article is the 18th contribution to the Fungal Diversity Notes series,in which we document 98 taxa across two phyla,eight classes,21 orders,46 families,and 59 genera.The represent samples of taxa were collected f...This article is the 18th contribution to the Fungal Diversity Notes series,in which we document 98 taxa across two phyla,eight classes,21 orders,46 families,and 59 genera.The represent samples of taxa were collected from a diverse range of regions,including Australia,Benin,Bolivia,Burkina Faso,Cameroon,Canada,China,Czechia,India,Japan,Madagascar,Mexico,New Zealand,Sri Lanka,Thailand,Togo,USA,Uzbekistan and Venezuela.Among these,we introduce one new genus,59 new species,13 new combinations,one new name and 24 new records,along with information on their hosts and geographic distributions.The newly introduced genus is Fusicastoreum,and the newly described species include:Acrogenospora guangxiensis,Agaricus longistipitatus,A.sunanensis,Anthosulcatispora sichuanensis,Anthracoidea siccatae,Bjerkandera meridionalis,Camarophyllopsis brunnea,Candolleomyces analalavaensis,C.kely,C.macrosporus,Ceriporia yunnanensis,Choiromyces mongolicus,Colletotrichum duohuaense,Coprinus variicolor,Cystoderma alticola,C.microspore,C.yadongense,Cytospora lhaluensis,Diaporthe amberina,D.mangiferae,Elsinoe fuzhouensis,Epicocum maxima,Fulvifomes shailashikhara,Fusarium tuberculatum,Fusicastoreum arenarium,F.occidentale,F.pisiglareum,F.trappei,Gyalidea lluxitensis,Gymnopilus rimopileus,Hohenbuehelia triloba,Hymenagaricus ruber,Hypholoma darjeelingensis,Laccaria guizhouensis,Lactifluus aureoelephanti,L.croceivillus,Leucoagaricus ankarafantsikaensis,L.rutilus,Micropsalliota squamulosa,M.vinacea,Neomyrmecridium triseptatum,Niesslia wurfbainiae,Nigropunctata conspicosa,Ophiocordyceps jilinensis,Oxydothis dehongensis,Panaeolus ranwuensis,Pestalotiopsis buxicola,Pleurocordyceps puerensis,Pseudocercospora cunninghamia,Psilocybe zhushanensis,Remotididymella tachibana,Russula gaoligongensis,R.guilinensis,R.pseudovirescens,Sarocladium solani,Septoriella saviya-ramazanovaii,Seriascoma oblonga,Talaromyces pseudorugulosus and Tricholosporum madagascariense.Additionally,species newly transferred from Psilocybe include Deconica caespitosa,D.californica,D.goniospora,D.josecastilloi,D.latispora,D.novozoncuantlensis,D.oregonensis,D.venezuelana and D.vialis.Russula afroscrobiculata is newly transferred from Lactarius afroscrobiculatus,and Puccinia hamamelidis,P.hydrangeicola,P.philadelphi are newly transferred from Aecidium.Furthermore,the new name Puccinia shojiana is proposed as a replacement for Aecidium akebiae.The 24 new records of hosts and geographical distributions include:Agaricus pallidobrunneus,Bovista cretacea,Candolleomyces subsingeri,Clitopilus chichawatniensis,Collybiopsis gibbosa,C.subumbilicata,Curvularia geniculate,Cystoderma japonicum,Cytospora diatrypelloidea,C.schulzeri,Elsinoe leucospermi,Fulvifomes aurantiacus,Laccaria macrobasidia,Menisporopsis pandanicola,M.pirozynskii,Multifurca pseudofurcata,Musicillium elettariae,Myrmecridium pulvericola,Ophiocordyceps asiana,O.campes,Phellinus resupinatus,Phylloporia afrospathulata,Tropicoporus linteus and Typhula incarnate.All taxa are supported by both morphological and phylogenetic analyses.展开更多
Dear Editor,The Cretaceous-Paleogene(K-Pg)mass extinction precipitated one of the most profound restructurings of biodiversity in recent geological history.Despite the extinction of many iconic groups,particularly the...Dear Editor,The Cretaceous-Paleogene(K-Pg)mass extinction precipitated one of the most profound restructurings of biodiversity in recent geological history.Despite the extinction of many iconic groups,particularly the non-avian dinosaurs,there is emerging evidence that previously overlooked taxa experienced stark morphological and evolutionary stasis.In this study,we report both adult and larva of beetles of the genus Loricera preserved in mid-Cretaceous Kachin amber(Figure 1),which display striking similarity to extant congeners,indicating a stasis of their specialized feeding behavior persisting at least 100 million years.展开更多
基金supported by the National Natural Science Foundation of China(42222201,42288201)。
文摘Angiosperms experienced one of the most remarkable radiations of land plants and are now the dominant autotrophs in terrestrial ecosystems.Recent phylogenomic studies based on large-scale data from plastid,mitochondrial,or nuclear transcriptomes/genomes and increased taxon sampling have provided unprecedent resolution into the phylogeny of flowering plants.However,owing to ancient rapid radiations,the interrelationships among the five lineages of Mesangiospermae,the vast majority of angiosperms,remain contentious.Here we show that,although plastid and mitochondrial genomes lack sufficient phylogenetic signal for resolving deeper phylogeny,the relationships among five mesangiosperm lineages can be confidently resolved under better-fitting models using genome-scale data.According to our Bayesian cross-validation and model test in a maximum likelihood framework,siteheterogeneous models(e.g.,CAT-GTR+G4,LG+C20+F+G)outperform site-homogeneous or partition models often used in previous studies.Under site-heterogeneous models,the approximately unbiased test favored our preferred tree recovered from various datasets:Ceratophyllales(coontails)are robustly recovered as sister to monocots,and they together are sister to the clade comprising magnoliids,Chloranthales,and eudicots.Our phylogenomic analyses resolve the last enigma of the deeper phylogeny of angiosperms and emphasize the efficacy of modeling compositional heterogeneity in resolving rapid radiations of plants.
基金supported by the National Natural Science Foundation of China(32270467,32020103006)National Research Foundation of Ukraine(2020/02/0369 to A.G.R.)CONCYTEC through the PROCIENCIA“Interinstitutional Alliances for Doctorate Programs”(PE501084299-2023-PROCIENCIA-BM to M.S.E.)。
文摘Most described Mesozoic ants belong to stem groups that existed only during the Cretaceous period.Previously,the earliest known crown ants were dated to the Turonian(Late Cretaceous,ca.94-90 million years ago(Ma))deposits found in the USA,Kazakhstan,and Botswana.However,the recent discovery of an alate male ant in Kachin amber from the earliest Cenomanian(ca.99 Ma),representing a new genus and species,Antiquiformica alata,revises the narrative on ant diversification.Antiquiformica can be distinctly differentiated from all known male stem ants by its geniculate antennae with elongated scape,extending far beyond the occipital margin of the head and half the length of the funiculus,as well as its partly reduced forewing venation.Furthermore,the combination of a one-segmented waist with a well-developed node,elongated scape extending beyond the occipital margin,and reduced forewing venation,particularly the completely reduced m-cu and rs-m crossveins and absence of rm and mcu closed cells,firmly places the fossil within the extant subfamily Formicinae.Fourier transform infrared spectroscopy(FTIR)confirmed that the amber containing Antiquiformica alata originated from the Kachin mines in Myanmar.This discovery significantly revises our understanding of the early evolution of Formicinae.The presence of Antiquiformica in Cenomanian amber indicates that the subfamily Formicinae emerged at least by the start of the Late Cretaceous,with crown ants likely originating earlier during the earliest Cretaceous or possibly the Late Jurassic,although paleontological evidence is lacking to support the latter hypothesis.
文摘The nuclear ribosomal ITS region and the chloroplast trnL-trnF (trnLF) intergenic region were se-quenced for 45 accessions of Paranephelius and six accessions of Pseudonoseris, the two genera of the subtribe Paranepheliinae (Liabeae, Asteraceae) distributed in the alpine regions of the Andes. This data set was used to estimate relationships between these genera and within each genus to aid in evaluating morphological variation and classification. Our results with both ITS and trnLF markers support the monophyly of subtribe Paranephelii-nae, and place Pseudonoseris discolor as the first diverged taxon sister to the clade containing Paranephelius. Pseudonoseris szyszylowiczii exhibited intraspecific divergence supporting intergeneric hybridization between Pseudonoseris and Paranephelius. Within Paranephelius, genetic divergence is low and not adequate to fully resolve phylogenetic relationships at the species level, but two genetically and morphologically recognizable groups were revealed by the ITS data. Several accessions possessing multiple ITS sequences represent putative hybrids between the two groups. These putative hybrids have caused some taxonomic confusion and difficulties in establishing species boundaries in Paranephelius. The divergence time estimates based on ITS sequences indi-cated that the stem of subtribe Paranepheliinae dates to 13 million years ago, but the diversification of the crown clade of the extant members began in the early Pleistocene or late Pliocene, perhaps associated with the uplift of the Andes and the climatic changes of global cooling.
基金funded by The Peregrine Fund's Neotropical Science and Student Education Program,a British Ornithologists'Union Small Ornithological Research Grant,a Neotropical Birding and Conservation(formerly known as Neotropical Bird Club)Conservation Award granted to D.Méndez in 2014,and two 2018 grants to D.Méndez,one from the Rufford Small Grants Foundation(24763-1)another from the International Foundation for Science(I-1-D-6156-1).
文摘Patterns of variation in the size of vulture foraging groups,and their ecological causes and consequences,remain litle explored despite strong links with the carrion recycling service that this key functional group provides.We documented the group size-frequency pattern of Andean con-dors Vultur gryphus gathered to feed on 42 equine carcasses experimentally placed in Bolivia,between 2012 and 2019,along an elevation range of 1,300-4,500 m asl.Based on the location(altitude and latitude)of the foraging groups,we examined the relationship between their size and species'population parameters(size and trend),habitat conditions,and livestock carcass availability and predictability.Condors utilized a high frequency(93%)of carcasses forming groups that ranged from 1 to 80 individuals(mean=25,median=18)and shaped a"lazy-J curve"typical pattern of size-frequency distribution whereby few groups(5,12%)were large(>55 individuals)and most(21,50%)were relatively small(<19 individuals).Group size related to altitude in that most larger groups formed at lower sites(below c.3,000 m asl),likely following an altitudinal gradient whereby larger groups are more likely to form around larger carcasses(i.e.,cattle),which are more likely to occur at lower elevations.Regardless of population size,group size could be an adaptive response of condors via local enhancement for improving individual scavenging efficiency.Many information gaps on this topic still exist,thus we provide a set of questions to address them,especially amidst the unrestricted impacts of human activities that condition vulture survival globally.
文摘A juvenile specimen of the black turtle, Chelonia mydas agassizii, was located in the shores of Cabo Tamar Island in the western entrance of the Strait of Magellan, Chile. A king crab angler found the specimen, and donated it to the Río Seco Natural History Museum’s vertebrate collection for further studies and exhibition. Morphological measurements and a genetic analysis derived from an mtDNA fragment amplified and sequenced, suggest that this specimen corresponds to the species Chelonia mydas agassiizii and that it is closely related to the Galapagos Islands black turtle population. Possible influences of the El Ni？o Southern Oscillation phenomenon on this tropical species in the Eastern South Pacific Ocean are briefly discussed.
基金CAH was invited to field by the Dirección Nacional del Antártico and the Instituto Antártico ArgentinoFuerza Aérea Argentina provided logistic support,and partial help was provided by the Consejo Nacional de Investigaciones Científicas y Tecnológicas and Universidad Nacional de La Plata(N838)+1 种基金CAH is particularly grateful to Oceanwide Expeditions,Vlissingen(NL)for financial support.JAC gratefully acknowledges U.S National Science Foundation Polar Programs support for field research support as well as descriptive work on Antarctic fossils(Grant nos.NSF OPP-1141820,OPP-0927341,OPP-0408308)the work of many stellar collaborators on these projects.
文摘The fossil record of birds from Antarctica is concentrated in the James Ross Basin,located in north-east of the Antarctic Peninsula.Birds are here represented by an extensive Paleogene record of penguins(Sphenisciformes)and Cretaceous–Paleogene record of Anseriformes,followed by other groups with a minor representation(Procellariiformes,Falconiformes,and Pelagornithidae),and others previously assigned controversially to“Ratites”,Threskiornithidae,Charadriiformes,Gruiformes,Phoenicopteriformes,and Gaviiformes.We provide a complete update of these records,commenting on the importance of some of these remains for the evolution of the major clades.
文摘Identity of the Chinese satyrine butterfly Palaeonympha avinoffi Schaus, 1927 has been uncertain since its description. The holotype is illustrated, and reasons are presented for considering it to represent the same species as Sinonympha amoena Lee, 1974, new synonym. Sinonympha avinoffi is a new combination. The systematic placement of Sinonympha is yet uncertain.
文摘Studies of holoplanktonic polychaetes in the Tropical Eastern Pacific have focused on their systematics and distribution however, population responses related to climate variability are non-existent. Therefore, the present work described for the first time the influence of the climatic variability 2004-2012 on the holoplanktonic polychaetes populations, as well as their relationship to environmental variables. Species of the Alciopidae, Lopadorrhynchidae and Iospilidae families were identified from 85 samples collected in the Pacific Basin of Colombia, contrasting them with the presence of ENSO, and correlating them with the environmental variables of temperature, salinity and chlorophyll-α concentration. Of the 14 species identified, only Lopadorrhynchus cf. henseni and L. cf. brevis increased their densities under El Ni<span style="white-space:nowrap;"><span style="white-space:nowrap;">ño and correlated positively with temperature. Rhynchonereella cf. petersii correlated negatively with temperature;while R. cf. gracilis and Pelagobia cf. longicirrata were positively correlated with chlorophyll-α concentration and salinity, respectively. Additionally, with the first description of the environmental ranges of the 14 species identified for the Colombian Pacific basin, it was found that the most commons species presented broader environmental ranges. The results from the current research are consistent with previous studies in other regions of the Pacific and latitudes. The responses of the organisms suggest trophic and mobility trends that were not known for tropical holoplanktonic polychaete species.
文摘Introduction:Deforestation significantly impacts large carnivores that depend on large tracts of interconnected forest habitat and that are sensitive to human activities.Understanding the relationship between habitat use and spatial distribution of such species across human modified landscapes is critical when planning effective conservation strategies.This study assessed the presence of potential landscape connectivity thresholds resulting from habitat fragmentation associated with different deforestation patterns using a scale-based approach that links species-specific home ranges with the extent of anthropogenic activities.The objectives were(1)to quantify the spatial and temporal distribution of natural vegetation for five common deforestation patterns and(2)to evaluate the connectivity associated with these patterns and the existence of potential thresholds affecting jaguar dispersal.The Bolivian lowlands,located within jaguar conservation units,were analysed with landscape metrics to capture the spatial and temporal changes within deforested areas and to determine potential impact on jaguar connectivity and connectivity thresholds for dispersal.Results:Over the period of 1976–2005,the amount of natural vegetation has decreased by more than 40%in all locations with the biggest changes occurring between 1991 and 2000.Landscape spatial structure around jaguar locations showed that jaguars used areas with mean proportion of natural areas=83.14%(SE=3.72%),mean patch density=1.16 patches/100 ha(SE=0.28 patches/100 ha),mean patch area=616.95 ha(SE=172.89 ha)and mean edge density=705.27 m/ha(SE=182.19 m/ha).We observed strong fragmentation processes in all study locations,which has resulted in the connectivity of jaguar habitat decreasing to<20%by 2005.A connectivity threshold zone was observed when the proportion of natural vegetation was less than 58.4%(SE=1.3).Conclusions:Assessing fragmentation and connectivity for carnivores within the extent of human-modified landscapes proved to be an effective way to understand the changes caused by deforestation and their potential effects on large carnivore habitats.Our study highlights the importance of scale-based approaches for assessing current conservation challenges to protect large carnivores.
基金supported by Conselho Nacional de Desenvolvimento Cientifico e Tecnologico(CNPq,ref.140815/2018-0)Society of Systematic Biology(SSB-GSRA 2018)+6 种基金Programa para el Desarrollo de la Ciencias Basicas(PEDECIBA)Fundacao de Amparo a Pesquisa do Estado do Rio Grande do Sul(FAPERGS,23/2551-0001938-8)Maxwell/hanrahan FoundationFonds voor Wetenschappelijk Onderzoek(FWO12A7614N and FWO12A7617N)Marie Skłodowska-Curie Actions(MSCA,101022238/HOSTILE)Fundacao de Amparo a Pesquisa do Estado de Sao Paulo(FAPESP,#2018/18473-6 and#2022/02789-0)Junta de Andalucia(EMERGIA20_38444).
文摘Male frogs emit stereotypical advertisement calls to attractmates and deter conspecific rivals.The evolution of these calls is thought to be linked to anatomical constraints and the acoustic characteristics of their surroundings.The acoustic adaptation hypothesis(AAH)posits that species evolve calls that maximize propagation distance and reduce signal degradation in the environmentwhere they are emitted.We applied phylogenetic comparative analyses to study the association of body size,vegetation density,type of aquatic ecosystem,and calling site on the evolution of acoustic traits in Cophomantini,a large radiation of Neotropical treefrogs(Hylidae).We obtained and analyzed body size,acoustic,and habitat data from a total of 112 species(58%of Cophomantini),using themost inclusive available phylogeny.We found a significant negative correlation between peak frequency,body size,and calling site,but contrary to the predictions of the AAH,we did not find support for associations among call traits and environmental characteristics.Although spectral allometry is explained by an anatomical constraint,it could also be maintained by female choice.We recommend that future studies strive to incorporate factors such as female mate preferences,eavesdropping by predators or parasites,and genetic drift.
基金Supported by the Project of Background Resources Survey in Shennongjia National Park(SNJNP2022004)the Open Project Fund of Hubei Provincial Key Laboratory for Conservation Biology of Shennongjia Snub-nosed Monkeys(SNJGKL2022004)+5 种基金the Science and Technology Projects of Xizang Autonomous Region,China(XZ202501ZY0019)the Science and Technology Fundamental Resources Investigation Program,Ministry of Science and Technology of China(2023FY101303)the Biological Resources Programme,Chinese Academy of Sciences(KFJ-BRP-009)the Projects of Science and Technology Programs of Xizang(XZ202202YD0031C)the Survey of Wildlife Resources in Key Areas of Xizang(ZL202203601)the National Natural Science Foundation of China(31961143010,31970010).
文摘This article is the 18th contribution to the Fungal Diversity Notes series,in which we document 98 taxa across two phyla,eight classes,21 orders,46 families,and 59 genera.The represent samples of taxa were collected from a diverse range of regions,including Australia,Benin,Bolivia,Burkina Faso,Cameroon,Canada,China,Czechia,India,Japan,Madagascar,Mexico,New Zealand,Sri Lanka,Thailand,Togo,USA,Uzbekistan and Venezuela.Among these,we introduce one new genus,59 new species,13 new combinations,one new name and 24 new records,along with information on their hosts and geographic distributions.The newly introduced genus is Fusicastoreum,and the newly described species include:Acrogenospora guangxiensis,Agaricus longistipitatus,A.sunanensis,Anthosulcatispora sichuanensis,Anthracoidea siccatae,Bjerkandera meridionalis,Camarophyllopsis brunnea,Candolleomyces analalavaensis,C.kely,C.macrosporus,Ceriporia yunnanensis,Choiromyces mongolicus,Colletotrichum duohuaense,Coprinus variicolor,Cystoderma alticola,C.microspore,C.yadongense,Cytospora lhaluensis,Diaporthe amberina,D.mangiferae,Elsinoe fuzhouensis,Epicocum maxima,Fulvifomes shailashikhara,Fusarium tuberculatum,Fusicastoreum arenarium,F.occidentale,F.pisiglareum,F.trappei,Gyalidea lluxitensis,Gymnopilus rimopileus,Hohenbuehelia triloba,Hymenagaricus ruber,Hypholoma darjeelingensis,Laccaria guizhouensis,Lactifluus aureoelephanti,L.croceivillus,Leucoagaricus ankarafantsikaensis,L.rutilus,Micropsalliota squamulosa,M.vinacea,Neomyrmecridium triseptatum,Niesslia wurfbainiae,Nigropunctata conspicosa,Ophiocordyceps jilinensis,Oxydothis dehongensis,Panaeolus ranwuensis,Pestalotiopsis buxicola,Pleurocordyceps puerensis,Pseudocercospora cunninghamia,Psilocybe zhushanensis,Remotididymella tachibana,Russula gaoligongensis,R.guilinensis,R.pseudovirescens,Sarocladium solani,Septoriella saviya-ramazanovaii,Seriascoma oblonga,Talaromyces pseudorugulosus and Tricholosporum madagascariense.Additionally,species newly transferred from Psilocybe include Deconica caespitosa,D.californica,D.goniospora,D.josecastilloi,D.latispora,D.novozoncuantlensis,D.oregonensis,D.venezuelana and D.vialis.Russula afroscrobiculata is newly transferred from Lactarius afroscrobiculatus,and Puccinia hamamelidis,P.hydrangeicola,P.philadelphi are newly transferred from Aecidium.Furthermore,the new name Puccinia shojiana is proposed as a replacement for Aecidium akebiae.The 24 new records of hosts and geographical distributions include:Agaricus pallidobrunneus,Bovista cretacea,Candolleomyces subsingeri,Clitopilus chichawatniensis,Collybiopsis gibbosa,C.subumbilicata,Curvularia geniculate,Cystoderma japonicum,Cytospora diatrypelloidea,C.schulzeri,Elsinoe leucospermi,Fulvifomes aurantiacus,Laccaria macrobasidia,Menisporopsis pandanicola,M.pirozynskii,Multifurca pseudofurcata,Musicillium elettariae,Myrmecridium pulvericola,Ophiocordyceps asiana,O.campes,Phellinus resupinatus,Phylloporia afrospathulata,Tropicoporus linteus and Typhula incarnate.All taxa are supported by both morphological and phylogenetic analyses.
基金National Natural Science Foundation of China(41925008,42222201,and 42288201)Second Tibetan Plateau Scientific Expedition and Research project(2019QZKK0706)Y.-D.L.is supported by a scholarship granted by the China Scholarship Council(202108320010).
文摘Dear Editor,The Cretaceous-Paleogene(K-Pg)mass extinction precipitated one of the most profound restructurings of biodiversity in recent geological history.Despite the extinction of many iconic groups,particularly the non-avian dinosaurs,there is emerging evidence that previously overlooked taxa experienced stark morphological and evolutionary stasis.In this study,we report both adult and larva of beetles of the genus Loricera preserved in mid-Cretaceous Kachin amber(Figure 1),which display striking similarity to extant congeners,indicating a stasis of their specialized feeding behavior persisting at least 100 million years.
