Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/51839
Title: Biology of the sand smelt, Atherina presbyter (Teleostei: Atherinidae), off the Canary Islands (central-east Atlantic)
Authors: Pajuelo, José G. 
Lorenzo, José M. 
UNESCO Clasification: 3105 Peces y fauna silvestre
Keywords: Boyeri Risso
Life-History
Reproductive-Biology
1829 Teleostei
Population, et al
Issue Date: 2000
Publisher: 0378-1909
Journal: Environmental Biology of Fishes 
Abstract: Atherina presbyter is a common fish off the Canary Islands. Age, growth, reproduction, and mortality of the species are studied based on sampling carried out from July 1995 to June 1996. The parameters of the total length–total weight relationship are: a=0.004521, and b=3.0771. Otoliths age readings indicate that the sampled population consists of four age groups (0–III years). The von Bertalanffy growth parameters for all individuals are: L∞=122 mm total length, k=0.79 year−1, and t0=−0.21 years. Individuals grow quickly in their immature first year, attaining approximately 60% of their maximum length. After the first year, the annual growth rate drops rapidly, because the energy is probably diverted to reproduction. It is a gonochoristic species with no evidence of sexual dimorphism. The gonad is present as a single diffuse testis in males and as a single discrete ovary in females. The overall ratio of males to females is not significantly different from 1:1. The reproductive period of the species is protacted (February to June). The peak of the reproductive effort occurs in April–May. The size at first maturity is 68 mm. The population is being heavily exploited.
URI: http://hdl.handle.net/10553/51839
ISSN: 0378-1909
DOI: 10.1023/A:1007643732673
Source: Environmental Biology of Fishes [ISSN 0378-1909], v. 59, p. 91-97
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