Seasonal and interannual variation of ichthyoplankton off Mauritania

Changes of the quantitative and qualitative composition of ichthyoplankton off Mauritania (21–16° N) in different seasons of 1997–2008 are analyzed. In this area, pelagic eggs and larvae of over 120 fish species belonging to 71 families are recorded. In warm periods, the fish of the tropical fauna i...

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Bibliographic Details
Published in:Journal of ichthyology 2009-07, Vol.49 (6), p.460-468
Main Author: Arkhipov, A. G.
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Caranx rhonchus
Life Sciences
Marine
Sardina pilchardus
Sardinella aurita
Scomber japonicus
Trachurus trachurus
Trachurus trecae
Zoology
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Summary:Changes of the quantitative and qualitative composition of ichthyoplankton off Mauritania (21–16° N) in different seasons of 1997–2008 are analyzed. In this area, pelagic eggs and larvae of over 120 fish species belonging to 71 families are recorded. In warm periods, the fish of the tropical fauna intensively spawn off Mauritania; round sardinella Sardinella aurita , West-African horse mackerel Trachurus trecae , and jack mackerel Caranx rhonchus are dominant. In cold periods, active spawning of fish belonging to the tropical fauna is recorded, the most abundant are European pilchard Sardina pilchardus , European horse mackerel Trachurus trachurus , and Atlantic mackerel Scomber japonicus . The spawning biomass of principal commercial fish species is calculated on the basis of the quantity of eggs laid by females. Environmental factors control fluctuations of abundance and distribution of ichthyoplankton in the considered region.
ISSN:0032-9452
1555-6425
DOI:10.1134/S0032945209060058