Temperature-dependent growth of the blue crab (Callinectes sapidus): a molt process approach
- 1 June 2006
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Fisheries and Aquatic Sciences
- Vol. 63 (6), 1298-1308
- https://doi.org/10.1139/f06-011
Abstract
Crustaceans display discrete and biphasic growth as a result of the molting process, so the traditionally used von Bertalanffy growth model does not capture well the phenomena associated with molting-based growth. A molt-process model can predict crustacean growth, including the temperature dependence of intermolt period that can produce the extended overwintering phenomena during which growth ceases. This study parameterized a molt-process model for the blue crab (Callinectes sapidus; Portunidae). Crab growth histories were observed for individual crabs held in field enclosures and temperature-controlled, recirculating tanks. A growth-based temperature of torpor (Tmin) of 10.8 °C was determined. A mean growth per molt of 119.5% increase in carapace width was observed. The average intermolt period observed was 536 ± 231 degree-days. The predictive ability of these growth parameter estimates was evaluated against growth observed in the field based on data on interannual changes in size frequencies of crabs from a winter dredge survey. The evaluated model was used to explore recruitment timing in warm (1996) and cold (1998) years. A 10% shift in the timing of juvenile crabs becoming available for legal exploitation was predicted from the simulations.Keywords
This publication has 15 references indexed in Scilit:
- An individual-based modeling approach to spawning-potential per-recruit models: an application to blue crab (Callinectes sapidus) in Chesapeake BayCanadian Journal of Fisheries and Aquatic Sciences, 2005
- Post-mating behavior, intramolt growth, and onset of migration to Chesapeake Bay spawning grounds by adult female blue crabs, Callinectes sapidus RathbunJournal of Experimental Marine Biology and Ecology, 2003
- Growth rate variability and lipofuscin accumulation rates in the blue crab Callinectes sapidusMarine Ecology Progress Series, 2001
- A comparative study of two sympatric species within the genus Callinectes: osmoregulation, long-term acclimation to salinity and the effects of salinity on growth and moultingJournal of Experimental Marine Biology and Ecology, 1997
- Cannibal–prey dynamics in young juveniles and postlarvae of the blue crabJournal of Experimental Marine Biology and Ecology, 1997
- Determinants of Postmolt Size in the American Lobster (Homarus americanus). II. Folding of Premolt CuticleCanadian Journal of Fisheries and Aquatic Sciences, 1994
- Determinants of Postmolt Size in the American Lobster (Homarus americanus). I. D13is the Critical StageCanadian Journal of Fisheries and Aquatic Sciences, 1993
- Application of a Yield and Egg Production Model Based on Size to an Offshore American Lobster PopulationTransactions of the American Fisheries Society, 1988
- Growth Model for Alaska King Crab (Paralithodes camtschatica)Journal of the Fisheries Research Board of Canada, 1977
- LOSS OF LIMBS AS A STIMULUS TO ECDYSIS IN BRACHYURA (TRUE CRABS)The Biological Bulletin, 1972