Growth and demography of the Pacific angel shark (Squatina californica), based upon tag returns off California

Cailliet, G. M., Mollet, H. F., Pittenger, G. G., Bedford, D., & Natanson, L. J. (1992). Growth and demography of the Pacific angel shark (Squatina californica), based upon tag returns off California. Australian Journal of Marine & Freshwater Research, 43(5), 1313-1330.
Metadata
TitleGrowth and demography of the Pacific angel shark (Squatina californica), based upon tag returns off California
AuthorsM. Cailliet, F. Mollet, G. Pittenger, D. Bedford, J. Natanson
AbstractThe authors have accumulated data on 69 tag-recaptures and have used this information to model a von Bertalanffy growth function to predict the growth of this commercially exploited shark species. Demographic analysis of this species yielded a net reproductive rate (Ro) of 2.25, a generation time of 14.5 yr, and an estimate of the instantaneous population growth coefficient (r) of 0.056 yr-1, assuming that only natural mortality was occurring, estimated to be 0.2 yr-1. When reasonable estimates of fishing mortality are included in the survivorship function, Ro and r are reduced considerably. Presently, Pacific angle sharks first enter the fishery at the same size and age at which they first reproduce.
JournalAustralian Journal of Marine & Freshwater Research
Date1992
Start page1313
End page1330
Subjectsangel shark, demography, Pacific angel shark, shark, tagging, von Bertalanffy growth parameter, Pacific, (Northeast), USA, California, Squatina californica
NoteCited By (since 1996):56

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