Temperature-Dependent Growth of Early Juvenile Southern Tanner CrabChionoecetes bairdi: Implications for Cold Pool Effects and Climate Change in the Southeastern Bering Sea
| Autor: | Janet Duffy Anderson, Michele L. Ottmar, Clifford H. Ryer, Mara L. Spencer, Daniel W. Cooper |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
geography animal structures geography.geographical_feature_category 010604 marine biology & hydrobiology 04 agricultural and veterinary sciences Aquatic Science Biology biology.organism_classification 01 natural sciences Crustacean Predation body regions Bottom water Fishery Chionoecetes bairdi 040102 fisheries Sea ice 0401 agriculture forestry and fisheries Juvenile Carapace Growth rate |
| Zdroj: | Journal of Shellfish Research. 35:259-267 |
| ISSN: | 1943-6319 0730-8000 |
| Popis: | Temperature strongly influences the growth of crustaceans and directly controls distribution. Despite being commercially important, there are no data on temperature effects upon growth in newly settled southern Tanner crab Chionoecetes bairdi. Recently settled crabs were reared through three consecutive molts, both individually and in groups, at four different temperatures; 2°C, 6°C, 9°C, and 12°C. Survival was higher for crabs grown individually (92%) than those in groups (66%) owing to cannibalism, particularly during molting. There were no temperature effects on survival. Growth rate (mm/day) increased linearly with temperature, a product of exponential decline in intermolt period with increasing temperature and amolt increment that was relatively constant across temperatures. Growth rate, intermolt period, and growth increment did not differ between crabs grown singly or in groups. These data suggest that growth in 0 y aged southern Tanner crabs is strongly inhibited at temperatures less than 2°C. A small mesh beam trawl survey was conducted in the southeast Bering Sea during September 2012, a year when a cold pool ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|