Spawning and distribution of bluefishPomatomus saltatrix(L.) in the northwestern Mediterranean
作者:
A. Sabatés,
P. Martin,
期刊:
Journal of Fish Biology
(WILEY Available online 1993)
卷期:
Volume 42,
issue 1
页码: 109-118
ISSN:0022-1112
年代: 1993
DOI:10.1111/j.1095-8649.1993.tb00309.x
出版商: Blackwell Publishing Ltd
关键词: Pomatomus saltatrix;larval distribution;fishing;NW Mediterranean
数据来源: WILEY
摘要:
The present study was carried out on the Catalan coast, the northern limit of the geographic distribution ofPomatomus saltatrix(Linnaeus, 1766) in the Mediterranean. Within the area studied, both larvae and adults were more abundant in the southern part, where surface temperature was slightly higher than in the north. Spawning ofP. saltatrixwas limited to the warmest months, from July to September, when the surface temperature was about 25° C, The most common larval sizes, between 2.25 and 2.75 mms.l., were distributed over the continental shelf, and the greatest concentrations were found between 20 and 100 m, suggesting an inshore spawning. Larvae, including the smallest sizes, were found in the most superficial layers and no evidence of vertical migration was observed. The species was regularly fished in the southern zone, maximum monthly catches ranging between 10–20 tonnes. The presence of adults in the coastal zone showed a marked seasonality closely related to temperatur, the lowest catches corresponding to the coldest mont
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