Ontogenetic vertical migration of the mesopelagic carnivorous copepod Paraeuchaeta spp. is related to their increase in body mass
Ontogenetic vertical migration of the mesopelagic carnivorous copepod Paraeuchaeta spp. is related to their increase in body mass
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中层食肉桡足类拟真毛虫的个体发生垂直迁移。
DOI：
10.1093/plankt/fbz051
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发表时间：
2019
影响因子：
2.1
通讯作者：
Abe Yoshiyuki
中科院分区：
文献类型：
--
作者：
Yamaguchi Atsushi;Ashjian Carin J;Campbell Robert G;Abe Yoshiyuki
两种主要的中层肉食性拟藻类桡足类，北冰洋西部的冰川拟藻类和亚北极西太平洋的延长类拟藻类，表现出特殊的个体发育垂直迁移模式，早期桡足类（C1）和成体（C6F/M）出现在较深的地方，而老年桡足类出现在较浅的地方。 C3−C5。体重（湿重、干重和无灰干重）的蜕皮增量与栖息地深度呈高度显着的负相关。这些事实表明，两种拟真毛虫物种都在较深层度过其生殖（C6F/M）和早期发育（C1）阶段，以避免捕食，并在中晚期桡足类阶段（C3−C5）向上迁移到猎物丰富的地方，以实现更大的质量生长。
Two dominant mesopelagic carnivorousParaeuchaetacopepods,Paraeuchaeta glacialisin the western Arctic Ocean andParaeuchaeta elongatain the western subarctic Pacific, exhibited specialized ontogenetic vertical migration patterns with deeper occurrences of early copepodids (C1) and adults (C6F/M) and shallower occurrences of older copepodids C3−C5. Molt increments in body masses (wet, dry and ash-free dry masses) exhibited highly significant negative correlations with habitat depth. These facts suggest that bothParaeuchaetaspecies spend their reproductive (C6F/M) and early developmental (C1) stages in deeper layers to avoid predation and migrate upwards to where prey is abundant during the middle-late copepodid stages (C3−C5) to achieve greater mass growth.