Abstract
Coastal and estuarine ecosystems in the eastern channel and southern bight of the North Sea provide nursery habitats for juvenile fishes. We examined the age 0-group juveniles of three flatfish speciesSolea solea, Limanda limanda and Pleuronectes platessa, collected in five nursery areas with different characteristics (three sites located near small estuaries and two affected by important inputs of industrial effluents), to evaluate habitat influence on their growth and condition. We measured a biochemical index (RNA:DNA ratio), a morphometric index (Fulton’s K condition index), plus a recent growth index (marginal otolith increment width) on each individual (about 3 months old), collected during surveys in autumn 1999. The three indices displayed few significant differences among the five nursery sites and different patterns for each species. We suggest that the investigated nursery areas provide habitats of equivalent quality for the age 0-group juvenile flatfishes in spite of different anthropogenic disturbances. On the other hand, this study focuses on the importance of using different biological indicators to assess habitat quality and environmental stressors in coastal areas.
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Gilliers, C., Amara, R. & Bergeron, JP. Comparison of growth and condition indices of juvenile flatfish in differentcoastal nursery grounds. Environmental Biology of Fishes 71, 189–198 (2004). https://doi.org/10.1007/s10641-004-0090-2
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DOI: https://doi.org/10.1007/s10641-004-0090-2