| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.1098/rsbl.2004.0290 |
| Scale analysis suggests frequent skipping of the second reproductive season in Atlantic herring. | |
| Engelhard GH; Heino M | |
| 发表日期 | 2005 |
| 出处 | Biology Letters 1 (2): 172-175 |
| 出版年 | 2005 |
| 语种 | 英语 |
| 摘要 | A common assumption in fish studies is that iteroparous fish, once mature, normally reproduce in all consecutive seasons. Analysis of scales from Norwegian spring-spawning herring collected between 1935-1973 revealed strong under-representation (47% of expected) of second-time spawners on the spawning grounds. This reduction is not explained satisfactorily by possible errors in scale-reading, suggesting that the second reproductive season is frequently skipped. Skipping a season may relate to trade-offs between growth, current and future reproduction, and survival, which are likely to be particularly strong for young adult herring. |
| 主题 | Adaptive Dynamics Network (ADN) |
| 关键词 | Clupea harengus Current and future reproduction Fishery management Life-history trade-off Migration cost Survival |
| URL | http://pure.iiasa.ac.at/id/eprint/7499/ |
| 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/128458 |
| 推荐引用方式 GB/T 7714 | Engelhard GH,Heino M. Scale analysis suggests frequent skipping of the second reproductive season in Atlantic herring.. 2005. |
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