野外性成熟后雄性大西洋鲑(Salmo salar L.)小鱼的蜕皮现象

IF 1.6 3区 农林科学 Q3 FISHERIES
Angus J. Lothian, Jessica Rodger, Lorna Wilkie, Marcus Walters, Richard Miller, Chris Conroy, Shona Marshall, Morven MacKenzie, Colin E. Adams
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引用次数: 0

摘要

发育途径中可能会出现冲突,导致个体无法进入不同的发育生命阶段,从而在特定时间段内表现出不同的表型。在鲑科鱼类中,理论认为性成熟可能会在同一 12 个月的时间内抑制随后的冶炼,这部分是由于这些过程发生的时间和明显相互冲突的生理变化造成的,部分是由于这些生理消耗过程的能量需求造成的。本研究测试了秋季捕获的性成熟雄性大西洋鲑(Salmo salar L.)小鱼是否会在第二年春季蜕皮。通过使用 PIT 遥测技术进行个体识别,估计秋季在两条河流流域性成熟的大西洋鲑鱼稚鱼中,分别有 3.0%(n = 6/203)和 5.9%(n = 1/17)的稚鱼在次年春季被识别为幼鱼。因此,我们认为,与之前对驯化大西洋鲑的研究和实验室实验结果一致,大西洋鲑的发育并不存在冲突,其生命史表现是由环境和遗传过程介导的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Smolting in post-sexually mature male Atlantic salmon (Salmo salar L.) parr in the wild

Smolting in post-sexually mature male Atlantic salmon (Salmo salar L.) parr in the wild

Conflicts can arise in developmental pathways that prevent an individual entering different developmental life stages that result in the expression of different phenotypes within a specific time period. In salmonids, theory suggests that sexual maturation may inhibit subsequent smolting within the same 12-month period and that this is partly the result of the time and the apparently conflicting physiological changes for these processes to occur, and partly because of the energy requirements for these physiologically taxing processes. This study tested whether sexually mature male Atlantic salmon (Salmo salar L.) parr, caught in the autumn, would subsequently smolt the following spring. Through individual identification using PIT telemetry, minimum estimates of 3.0% (n = 6/203) and 5.9% (n = 1/17) of Atlantic salmon parr that were sexually mature in two river catchments during the autumn were subsequently identified as smolts in the following spring. We therefore suggest that, in line with previous studies on domesticated Atlantic salmon and laboratory-based experiments, there is no developmental conflict but that life-history expression is mediated by environmental and genetic processes.

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来源期刊
Ecology of Freshwater Fish
Ecology of Freshwater Fish 农林科学-海洋与淡水生物学
CiteScore
4.10
自引率
0.00%
发文量
45
审稿时长
12-24 weeks
期刊介绍: Ecology of Freshwater Fish publishes original contributions on all aspects of fish ecology in freshwater environments, including lakes, reservoirs, rivers, and streams. Manuscripts involving ecologically-oriented studies of behavior, conservation, development, genetics, life history, physiology, and host-parasite interactions are welcomed. Studies involving population ecology and community ecology are also of interest, as are evolutionary approaches including studies of population biology, evolutionary ecology, behavioral ecology, and historical ecology. Papers addressing the life stages of anadromous and catadromous species in estuaries and inshore coastal zones are considered if they contribute to the general understanding of freshwater fish ecology. Theoretical and modeling studies are suitable if they generate testable hypotheses, as are those with implications for fisheries. Manuscripts presenting analyses of published data are considered if they produce novel conclusions or syntheses. The journal publishes articles, fresh perspectives, and reviews and, occasionally, the proceedings of conferences and symposia.
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