Life History of Spiny Dogfish off the Northeastern United States

Autor:	Marta F. Nammack, J. A. Colvocoresses, John A. Musick
Rok vydání:	1985
Předmět:	Litter (animal) Animal science Spiny dogfish Squalus acanthias biology Reproductive biology Anatomy Aquatic Science Life history Squalidae biology.organism_classification Ecology Evolution Behavior and Systematics Dorsal fin
Zdroj:	Transactions of the American Fisheries Society. 114:367-376
ISSN:	1548-8659 0002-8487
Popis:	This report describes the age, growth, and reproductive biology of the spiny dogfish Squalus acanthias off the northeastern U.S. Analysis of growth rings on dorsal fin spines yielded yon Bertalanffy growth coefficients (K) and asymptotic total lengths (L∞) of K = 0.1481, L∞ = 82.49 cm for males, and K = 0.1057, L∞ = 100.5 cm for females. Median lengths and ages at maturity were 79.9 cm and 12.1 years for females and 59.5 cm and 6.0 years for males. The average number of young for females at the modal size range (90–94 cm) was 5.8; litter size ranged from 1 to 15 embryos every 2 years. Received March 12, 1984 Accepted March 12, 1985
Databáze:	OpenAIRE
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