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Fluctuating salinity during development impacts fish life histories
Journal of Animal Ecology, Volume 94, Issue 9, Page 1848-1865, September 2025.Global freshwater ecosystems are increasingly threatened by salinisation. Salinity levels not only rise but also fluctuate due to extreme climate events and human activities. This study shows that stable elevated salinity accelerates reproduction in a freshwater fish, but fluctuations in salinity reduce reproductive output, with sex‐specific effects on
Meng‐Han Joseph Chung +4 more
wiley +1 more source
Mating system, brood parasitism and extra-pair behaviour in the Chinese egret (Egretta eulophotes) basing on the microsatellite technology [PDF]
, 2015 动物的婚配制度影响着个体的繁殖成功率，直接关系到群体的遗传多样性和种群动态的发展变化，是保护遗传学和生态学领域中非常重要的研究内容。已有学者野外观察到黄嘴白鹭（Egrettaeulophotes）存在婚外交配（EPC）行为，然而，有关黄嘴白鹭的婚配制度、EPC的产生机制以及其是否会导致婚外父权（EPP）现象还未清楚。此外，许多集群繁殖的鸟类都存在种内巢寄生（CBP）现象，而关于黄嘴白鹭巢寄生行为的研究也尚未开展。因此，本研究围绕黄嘴白鹭的婚配制度问题，主要开展以下几方面研究： （1）对3种非损伤性样品 ...
戴宇飞
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野生动物学报, 2013 黑龙江七星河国家级自然保护区位于三江平原腹地,是丹项鹤的重要繁殖地,2011年4～5月对保护区繁殖前期的丹顶鹤孵化行为进行了观察,结果表明:丹顶鹤孵化期的各种行为具有较强的规律性,各行为频率依次为:繁殖31.34%、觅食28.26%、警戒20.12%、静栖8.99%、游走4.51%、其他6.78%。在不同繁殖阶段,丹顶鹤各行为的生境分配存在一定差异。在产卵前期,繁殖行为主要发生在芦苇火烧地,觅食行为主要发生在农田;在孵化初期,繁殖行主要发生在苇丛里,觅食行为主要发生在芦苇火烧地。
姜娜, 李晓民
doaj
Movement of short-tailed shearwaters with environmental gradient in the sub-Arctic Pacific and Arctic seas through summer to autumn [PDF]
, 2016 第4回極域科学シンポジウム横断セッション：[IA] 「急変する北極気候システム及びその全球的な影響の総合的解明」―GRENE北極気候変動研究事業研究成果報告2013―11月12日（火） 国立極地研究所 ...
Catherine Meathrel +5 more
core +1 more source
Integrative Conservation, Volume 4, Issue 2, Page 165-187, June 2025.Upper left: Cyrtodactylus myintkyawthurai, upper right: Hemiphyllodactylus montawaensis, and bottom left: Gyiophis salweenensis, just recently described, microendemic taxa not yet covered by any protective measures. Bottom right: Geochelone platynota offspring from Cologne Zoo, an example for successful ex situ keeping and conservation breeding of ...
Carolin Scholten +7 more
wiley +1 more source
野生动物学报, 2014 2007年3月～2008年2月,在哈尔滨北方森林动物园,选2对健康的成年丹顶鹤,采用目标取样和扫描取样相结合的方法进行了行为观测,同时收取粪便提取激素,利用放射免疫分析法(RIA)测定了笼养丹顶鹤粪样中睾酮、孕酮、雌二醇的浓度。试验结果表明:笼养丹顶鹤繁殖行为呈显著的季节变化,其对鸣、炫耀行为的高发期在3、4月 ...
王英树 田秀华 张冬冬 马雪峰 何相宝
doaj
Wildlife Letters, Volume 3, Issue 2, Page 64-72, June 2025.Daily survival rate of active nests (with parental care) (n = 30) and the same inactive nests after breeding had finished (without parental care) (n = 30) of the White‐bellied Redstarts during the incubation period; the orange line represents inactive nests and the blue line represents active nests at the same site.
Yifei Wang +5 more
wiley +1 more source
野生动物学报, 2017 2014年5月至2014年10月间,在青海省海北自治州祁连县野牛沟乡达玉村附近,从动态的角度研究高原鼠兔在其生境地繁殖季节前后血常规、血气和性激素的变化,并与繁殖期间的各种环境因子相关联,探讨鼠兔繁殖策略对环境及行为的响应。结果表明,可将该地区高原鼠兔的繁殖期分为过渡恢复阶段(5月以前); 繁殖旺盛阶段(5月下旬～7月中旬); 繁殖抑制阶段(7月下旬～9月下旬); 繁殖静止阶段(10月及10月以后)4个阶段,不同的繁殖阶段高原鼠兔在体重、繁殖指数、血常规指标、血气指标、睾丸相对重量 ...
谢惠春 罗巧玉 陈 志 马永贵
doaj
Semantic modeling of topography with digital elevation data and its applications for mapping potential habitat [PDF]
, 2008 Thesis (Ph. D. in Science)--University of Tsukuba, (A), no.
松浦 俊也
core
Simulating the efficacy of wolf–dog hybridization management with individual‐based modeling
Conservation Biology, Volume 39, Issue 1, February 2025.In the photo, an introgressed adult wolf–dog in the Northern Apennines, Italy, not far from the city of Bologna. Part of a research program, this male has been sterilized and released back in its own pack with a Global Positioning Collar. Abstract Introgressive hybridization between wolves and dogs is a conservation concern due to its potentially ...
Nina Luisa Santostasi +4 more
wiley +1 more source