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Temporal and along-shelf distribution of the larval fish assemblage at Gran Canaria, Canary Islands Moyano, M.; Hernández-Léon, S. (2009). Temporal and along-shelf distribution of the larval fish assemblage at Gran Canaria, Canary Islands. Sci. Mar. (Barc.) 73(Suppl. 1): 85-96. https://dx.doi.org/10.3989/scimar.2009.73s1085 In: Scientia Marina (Barcelona). Consejo Superior de Investigaciones Científicas. Institut de Ciènces del Mar: Barcelona. ISSN 0214-8358; e-ISSN 1886-8134

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Beschikbaar in	Auteurs
VLIZ: Open access 154828 [ download pdf ]

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Trefwoorden

Aquatic communities > Plankton > Zooplankton Aquatic communities > Plankton > Zooplankton > Ichthyoplankton Developmental stages > Larvae > Fish larvae Distribution Lunar luminescence Survival Temporal variations > Periodic variations > Seasonal variations Marien/Kust

Author keywords

ichthyoplankton; larval assemblages; mesozooplankton; seasonalvariation; lunar illumination

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Auteurs		Top
Moyano, M. Hernández-Léon, S.

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Abstract

Temporal and spatial variations of the larval fish community off the island of Gran Canaria (Canary Islands) were studied in weekly surveys from October 2005 to June 2006. A total of 156 taxa, belonging to 5 1 families and 15 orders, were identified, Myctophidae was by far the most abundant family (30%), followed by Sparidae (11%), Clupeidae (9%) and Gonostomatidae (7%). As expected for an oceanic island, neritic and oceanic taxa contributed in similar proportions. Leeward and windward retention areas were found for total egg and neritic larval abundance. However, seasonality showed a stronger influence on the annual larval assemblage than sampling site, as the latter was not significant oil a long time scale. Results suggest that there are two seasonal larval assemblages corresponding to the two main characteristic periods of the water column in these waters: mixing (winter) and stratification (summer). In addition, a significant relationship was recorded between lunar illumination and small mesozooplankton biomass, suggesting that this relationship may be extended to certain neritic families. The most abundant neritic larvae (Sparidae) showed this lunar pattern, which partially supports a recent hypothesis about the effect of lunar illumination on larval fish survival and development in subtropical waters.

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