Ontogenetic vertical migration of the mesopelagic carnivorous copepod Paraeuchaeta spp. is related to their increase in body mass
| Autor: | Yoshiyuki Abe, Robert G. Campbell, Carin J. Ashjian, Atsushi Yamaguchi |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
010504 meteorology & atmospheric sciences Ecology biology Paraeuchaeta Mesopelagic zone 010604 marine biology & hydrobiology Ontogeny Zoology Aquatic Science biology.organism_classification 01 natural sciences Arctic Diel vertical migration Ecology Evolution Behavior and Systematics Copepod 0105 earth and related environmental sciences |
| Zdroj: | Journal of Plankton Research. 41:791-797 |
| ISSN: | 1464-3774 0142-7873 |
| Popis: | Two dominant mesopelagic carnivorous Paraeuchaeta copepods, Paraeuchaeta glacialis in the western Arctic Ocean and Paraeuchaeta elongata in 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 both Paraeuchaeta species 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. |
| Databáze: | OpenAIRE |
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