Gateway to Think Tanks
来源类型 | Article |
规范类型 | 其他 |
DOI | 10.1098/rspb.2011.1290 |
Juvenile exposure to predator cues induces a larger egg size in fish. | |
Segers FHID; Taborsky B | |
发表日期 | 2012 |
出处 | Proceedings of the Royal Society B: Biological Sciences 279 (1731): 1241-1248 |
出版年 | 2012 |
语种 | 英语 |
摘要 | When females anticipate a hazardous environment for their offspring, they can increase offspring survival by producing larger young. Early environmental experience determines egg size in different animal taxa. We predicted that a higher perceived predation risk by juveniles would cause an increase in the sizes of eggs that they produce as adults. To test this, we exposed juveniles of the mouthbrooding cichlid Eretmodus cyanostictus in a split-brood experiment either to cues of a natural predator or to a control situation. After maturation, females that had been confronted with predators produced heavier eggs, whereas clutch size itself was not affected by the treatment. This effect cannot be explained by a differential female body size because the predator treatment did not influence growth trajectories. The observed increase of egg mass is likely to be adaptive, as heavier eggs gave rise to larger young and in fish, juvenile predation risk drops sharply with increasing body size. This study provides the first evidence that predator cues perceived by females early in life positively affect egg mass, suggesting that these cues allow her to predict the predation risk for her offspring. |
主题 | Evolution and Ecology (EEP) |
关键词 | Early environment Egg size Fish Maternal effects Phenotypic plasticity Predation |
URL | http://pure.iiasa.ac.at/id/eprint/9983/ |
来源智库 | International Institute for Applied Systems Analysis (Austria) |
引用统计 | |
资源类型 | 智库出版物 |
条目标识符 | http://119.78.100.153/handle/2XGU8XDN/129564 |
推荐引用方式 GB/T 7714 | Segers FHID,Taborsky B. Juvenile exposure to predator cues induces a larger egg size in fish.. 2012. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Segers FHID]的文章 |
[Taborsky B]的文章 |
百度学术 |
百度学术中相似的文章 |
[Segers FHID]的文章 |
[Taborsky B]的文章 |
必应学术 |
必应学术中相似的文章 |
[Segers FHID]的文章 |
[Taborsky B]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。