Spatial patterns of copepod biodiversity in relation to a tidal front system in the main spawning and nursery area of the Argentine hake Merluccius hubbsi

Copepods play an important role in marine ecosystems as a direct link of energy transfer between primary producers and higher trophic level consumers, such as fish. In the Argentine Sea, the Patagonian stock of Argentine hake Merluccius hubbsi spawns from late austral spring (December) to early autu...

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Bibliographic Details
Published in:Journal of marine systems 2014-11, Vol.139, p.433-445
Main Authors: Temperoni, B., Viñas, M.D., Martos, P., Marrari, M.
Format: Article
Language:English
Subjects:
Adults
Argentine Sea
Autumn
Copepod biodiversity
Ctenocalanus vanus
Drepanopus forcipatus
Frontal features
Hake
Larvae
Marine
Merluccius hubbsi
Merluccius hubbsi larvae
Microsetella norvegica
Oithona helgolandica
Raw materials
Spawning ground
Tidal energy
Tidal power
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Summary:Copepods play an important role in marine ecosystems as a direct link of energy transfer between primary producers and higher trophic level consumers, such as fish. In the Argentine Sea, the Patagonian stock of Argentine hake Merluccius hubbsi spawns from late austral spring (December) to early autumn (April) in the northern Patagonian shelf region (43°–45°30′S), in association with a highly productive tidal front system. Since hake larvae prey mainly upon copepods, the objective of this study was to assess the spatial variability in the abundance and diversity of these potential food items in different sectors of the front, as one of the possible factors affecting hake recruitment success. Two complementary mesh sizes (67 and 300μm) were used to accurately target the entire copepod size spectrum. The copepod community was dominated by developmental stages
ISSN:0924-7963
1879-1573
DOI:10.1016/j.jmarsys.2014.08.015