Differences in diet-induced flexibility in morphology and growth in a partially migratory species
Differences in diet-induced flexibility in morphology and growth in a partially migratory species
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部分迁徙物种的饮食引起的形态和生长灵活性的差异
DOI：
10.1139/cjfas-2015-0300
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发表时间：
2016
影响因子：
2.4
通讯作者：
Van Leeuwen T
中科院分区：
文献类型：
--
作者：
Van Leeuwen T
部分迁移，即一个种群中的一些个体迁移，而另一些个体仍然居住，通常与个体发育转变为更好的喂养或作为对逆境的反应有关，但其潜在机制仍然相对未知。褐鳟鱼（萨尔莫trutta）表现出部分迁移，一些人留在淡水（淡水居民），而其他人进行溯河产卵迁移，获得大部分的成年大小在海上，然后返回淡水产卵。个体鳟鱼所采用的选择被认为部分取决于其在早期生活中的生长表现，这在淡水溪流的随机和动态环境中可能取决于其灵活性。为了研究亲本类型对表型灵活性的潜在影响，我们测量了淡水居民和溯河产卵亲本在饮食转换前后的全同胞后代的代谢、生长和形态。结果表明，投喂摇蚊幼虫的鱼苗生长速度快于投喂水蚤幼虫的鱼苗，头形和体形更圆，但饲料对标准代谢率没有影响。有趣的是，溯河产卵的父母的后代不太能够保持他们的生长速度时，喂养onDaphniathan是那些淡水居民，并显示出相应的更大的增长后，开关从Daphniato摇蚊幼虫。溯河产卵的父母的后代也表现出较少的形态灵活性，在应对饮食比淡水居民的后代。我们讨论了如何迁移的父母的历史可能与表型的灵活性在生命早期的相互作用，影响后代的迁移概率。
Partial migration, in which some individuals of a population migrate while other individuals remain resident, is generally associated with ontogenetic shifts to better feeding or as a response to adversity, but its underlying mechanisms remain relatively unknown. Brown trout (Salmo trutta) exhibit partial migration, with some individuals remaining in fresh water (freshwater-resident) while others undertake an anadromous migration, gain most of their adult size at sea, and then return to fresh water to spawn. The option adopted by an individual trout is thought to be partly determined by its growth performance in early life, which in the stochastic and dynamic environment of freshwater streams may be dependent on its flexibility. To examine potential effects of parent type on phenotypic flexibility, we measured the metabolism, growth, and morphology of full-sibling groups of offspring from freshwater-resident and anadromous parents both before and after a switch in diet. We found that fry had a higher growth rate and a more rounded head and body shape when reared on chironomid larvae compared with when they were reared onDaphnia, but diet had no effect on standard metabolic rate. Interestingly, offspring of anadromous parents were less able to maintain their growth rate when fed onDaphniathan were those of freshwater-residents and showed a correspondingly greater increase in growth following a switch fromDaphniato chironomid larvae. Offspring of anadromous parents also showed less morphological flexibility in response to diet than did the offspring of freshwater-residents. We discuss how the migration history of the parents might interact with phenotypic flexibility in early life to influence the migration probability of the offspring.
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溯河产卵鳟鱼和常住鳟鱼（Salvelinus fontinalis）幼鱼早期生物能差异
影响因子：
2.4
作者：
Geneviève R. Morinville;J. Rasmussen
通讯作者：
J. Rasmussen
DOI：
--
发表时间：
--
期刊：
影响因子：
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作者：
R. Ege;A. Krogh
通讯作者：
A. Krogh
蝾螈幼虫的形态变异：饮食诱导头部形状的可塑性
影响因子：
2.7
作者：
Susan C. Walls;S. Belanger;A. Blaustein
通讯作者：
A. Blaustein
在氧气测量系统中使用塑料材料。
影响因子：
3.3
作者：
E. Stevens
通讯作者：
E. Stevens
影响因子：
3.4
作者：
Chapman, Ben B.;Bronmark, Christer;Hansson, Lars-Anders
通讯作者：
Hansson, Lars-Anders