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发头裸腹(Moina irrasa Brehm)种群增长与食物浓度及光照的关系 被引量:5
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作者 高露姣 赖伟 陈立侨 《水产科技情报》 1997年第2期61-64,共4页
在室温条件下分三组培养发头裸腹氵蚤(MoinairrasaBrehm),以1.25×106cels/ml酵母液为培养液。设A组为对照组,B组每天更换10ml培养液,C组始终不给予光照。结果是B组食物浓度过高,种群... 在室温条件下分三组培养发头裸腹氵蚤(MoinairrasaBrehm),以1.25×106cels/ml酵母液为培养液。设A组为对照组,B组每天更换10ml培养液,C组始终不给予光照。结果是B组食物浓度过高,种群增长受较明显的抑制,表现为个体数少、寿命短、怀卵期延长。培养期间不给光照的C组。 展开更多
关键词 甲壳动物 发头裸腹 食物浓度 光照
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PRIMA SEGNALAZIONE ITALIANA DI Numenius arquata orientalis C. L. BREHM, 1831
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作者 PIERANDREA BRICHETTI GruppoRicercheAvifauna +1 位作者 MuseoCivicodiScienzeNaturali Brescia 《Natural Disaster Reduction in China》 1989年第1期235-237,共3页
L’Autore descrive un esemplare di Numenius arquata conservato nelle collezioni del Mu-seo Civico di Scienze Naturali di Brescia che, sulla base dei caratteri biometrici, risulta appartenere allassp. orientalis. Cattu... L’Autore descrive un esemplare di Numenius arquata conservato nelle collezioni del Mu-seo Civico di Scienze Naturali di Brescia che, sulla base dei caratteri biometrici, risulta appartenere allassp. orientalis. Catturato a Ghedi (BS) nel 1899, l’esemplare rappresenta il primo ritrovamento per l’Italia. First italian record of Numenius arquata orientalis C.L. Brehm, 1831. The Author descri-bes one specimen of Numenius arquata collected at Ghedi (Brescia) in 1899, actually in the collectionsof the Museo Civico di Scienze Naturali di Brescia. On the basis of its biometrical characters it is tobe attributed to the subspecies orientalis. This is the first specimen of this species so far discovered in Italy. 展开更多
关键词 PI brehm PRIMA SEGNALAZIONE ITALIANA DI Numenius arquata orientalis C
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Historic breeding of Sociable Lapwing(Vanellus gregarius) in Xinjiang
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作者 Johannes KAMP Maxim A.KOSHKIN Robert D.SHELDON 《Chinese Birds》 2010年第1期70-73,共4页
The Sociable Lapwing(Vanellus gregarius) was recently categorized as Critically Endangered by the IUCN due to a strong decline and overall range contraction.Until now the only published Chinese record of the species w... The Sociable Lapwing(Vanellus gregarius) was recently categorized as Critically Endangered by the IUCN due to a strong decline and overall range contraction.Until now the only published Chinese record of the species was a vagrant sighting in 1998.We reviewed reports and historic literature from a German ornithological expedition in 1876,which reported the species to be a breeding bird in Xinjiang,western China in the second half of the 19th century.According to local expertise,the species seems since to have become extinct in Xinjiang,but surveys are suggested to clarify its current status. 展开更多
关键词 Sociable Lapwing(Vanellus gregarius) STEPPE Xinjiang Uighur Autonomous Region Alfred Edmund brehm
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