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Growth, feeding, production, and consumption in 0-group bib (Trisopterus luscus L.) and whiting (Merlangius merlangus L.) in a shallow coastal area of the south-west Netherlands Hamerlynck, O.; Hostens, K. (1993). Growth, feeding, production, and consumption in 0-group bib (Trisopterus luscus L.) and whiting (Merlangius merlangus L.) in a shallow coastal area of the south-west Netherlands. ICES J. Mar. Sci./J. Cons. int. Explor. Mer 50(1): 81-91. https://dx.doi.org/10.1006/jmsc.1993.1009 In: ICES Journal of Marine Science. Academic Press: London. ISSN 1054-3139; e-ISSN 1095-9289 Is gerelateerd aan: Hamerlynck, O.; Hostens, K. (2003). Growth, feeding, production, and consumption in 0-group bib (Trisopterus luscus L.) and whiting (Merlangius merlangus L.) in a shallow coastal area of the south-west Netherlands, in: Hostens, K. The demersal fish and macro-invertebrate assemblages of the Westerschelde and Oosterschelde estuaries (Southern Bight of the North Sea) = De demersale vis- en macro-invertebraten gemeenschappen van de Westerschelde en Oosterschelde estuaria (Zuidelijke Bocht van de Noordzee). pp. 133-140, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 135445 [ download pdf ]

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Trefwoorden

Aquatic organisms > Marine organisms > Fish > Marine fish Developmental stages > Juveniles Diets Feeding Food conversion Interspecific relationships > Predation Nursery grounds Population functions > Growth Merlangius merlangus (Linnaeus, 1758) [WoRMS]; Trisopterus luscus (Linnaeus, 1758) [WoRMS] ANE, Nederland [Marine Regions] Marien/Kust

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Auteurs		Top
Hamerlynck, O. Hostens, K.

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Abstract

In 1988 juvenile bib (Trisopterus luscus) and whiting (Merlangius merlangus) were studied in a shallow coastal area by monthly sampling with fine-meshed nets. 0-group fish of both species are first caught in May. By the end of the first growth season bib reached about 150mm SL (standard length), whiting about 170mm SL. Maximal densities were recorded in June and by the end of the year most fish had left the area. The instantaneous mortality is estimated at 0.008 day-1 (0.77% day-1 for bib and 0.76% day-1 for whiting) for both species. In May both species depended almost exclusively on calanoid copepods. In June and July mysids and amphipods were the most important invertebrate prey, but small fishes such as gobies provided a substantial proportion of the energy requirements, especially in whiting. From August onwards shrimp and fish dominated the diet in both species. Using Jones' (1974) model, food consumption as per cent body weight day-1 varied between 4 and 6% during summer and declined to 2 to 3% in autumn. Total consumption per unit area of subtidal seafloor, by the 0-group fish of both species taken together, was estimated at 0.47 g ash-free dry weight (ADW) m-2 year-2 using Jones' (1974) model and at 0.57 g ADW m-2 year-1 using a conversion efficiency (P:C ratio) of 0.34.

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