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Co-occurrence of European sardine (Sardina pilchardus), anchovy (Engraulis encrasicolus) and sprat (Sprattus sprattus) larvae in southern North Sea habitats: abundance, distribution and biochemical-based condition Kanstinger, P.; Peck, M.A. (2009). Co-occurrence of European sardine (Sardina pilchardus), anchovy (Engraulis encrasicolus) and sprat (Sprattus sprattus) larvae in southern North Sea habitats: abundance, distribution and biochemical-based condition. Sci. Mar. (Barc.) 73(Suppl. 1): 141-152. https://dx.doi.org/10.3989/scimar.2009.73s1141 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 154850 [ download pdf ]

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Trefwoorden

Abundance Acids > Organic compounds > Organic acids > Nucleic acids > DNA ANE, Germany, German Bight ANE, North Sea Developmental stages > Larvae > Fish larvae Fish habitats Natural populations > Animal populations > Spawning populations Population characteristics > Population structure > Size distribution Clupeiformes [WoRMS] German Bight [Marine Regions]; Noordzee [Marine Regions] Marien/Kust

Author keywords

clupeiform fish; larvae; habitats; RNA-DNA; growth

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Auteurs		Top
Kanstinger, P. Peck, M.A.

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Abstract

Spawning populations of European sardines (Sardina pilchardus) and anchovies (Engraulis encrasicolus) have become re-established in the southern North Sea after a similar to 30-year absence and now co-occur with sprat (Sprattus sprattus). Consequently, little is known concerning potential interactions among these three species in this region. Based upon parallel cruises conducted in June/July 2005, we compared the larval abundance, size-distributions and biochemical-based condition of these species among 1) nearshore (Wadden Sea) areas and offshore (German Bight) areas that were 2) vertically mixed, 3) frontal zones, or 4) stratified waters. In general terms, larval condition (RNA:DNA) was relatively high at all stations. Although fronts clearly acted to concentrate larvae, larval condition was not necessarily higher. For example 9% of sardines captured at the tidal mixing front were categorised as starving, while no starving larvae were sampled in the stratified water masses. Habitats of sardine and sprat larvae were similar, whereas anchovies were primarily restricted to nearshore areas. This is the first Study examining the potential role of near- and offshore habitats as nursery areas and the extent to which resource (habitat) partitioning exists among the larvae of sprat and newly established anchovy and sardine in the North Sea.

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