Vlaams Instituut voor de Zee

Platform voor marien onderzoek

In:

Open Marien Archief

Het Open Marien Archief van België (OMA) biedt vrije toegang tot de digitale publicaties over de Vlaamse kust en het Belgisch deel van de Noordzee, en alle andere mariene, estuariene en kustgebonden publicaties van Belgische auteurs en wetenschappers en van buitenlandse wetenschappers geaffilieerd aan een Belgische instelling.

Meer info

Nieuwe zoekopdracht
meld een fout in dit recordmandje (0): toevoegen | toon Print-vriendelijke versie

Size structure and feeding dynamics in estuarine clupeoid fish schools: field evidence for the school trap hypothesis
Maes, J.; Ollevier, F.P. (2002). Size structure and feeding dynamics in estuarine clupeoid fish schools: field evidence for the school trap hypothesis. Aquat. Living Resour. 15(4): 211-216. dx.doi.org/10.1016/S0990-7440(02)01181-6
In: Aquatic Living Resources = Ressources vivantes aquatiques. Elsevier: Paris. ISSN 0990-7440, meer
Peer reviewed article

Ook gepubliceerd als
  • Maes, J.; Ollevier, F.P. (2002). Size structure and feeding dynamics in estuarine clupeoid fish schools: field evidence for the school trap hypothesis, in: (2002). VLIZ Coll. Rep. 32(2002). VLIZ Collected Reprints: Marine and Coastal Research in Flanders, 32: pp. chapter 31, meer

Beschikbaar in Auteurs 

Trefwoorden
    Schooling behaviour; Voedingsgedrag; Clupea harengus Linnaeus, 1758 [WoRMS]; Clupea harengus Linnaeus, 1758 [WoRMS]; Sprattus sprattus (Linnaeus, 1758) [WoRMS]; Sprattus sprattus (Linnaeus, 1758) [WoRMS]; ANE, België [gazetteer]; Marien; Brak water
Author keywords
    schooling behaviour; school trap hypothesis; diet composition; niche overlap; size-assortativeness; Clupea harengus; Sprattus sprattus

Auteurs  Top 

Abstract
    An analysis of 273 samples taken at the filter screens of an estuarine power plant cooling water intake showed that herring and sprat were strongly associated with each other and formed mixed species schools. Herring-dominated schools were typically larger, more frequent and contained larger-sized individuals than schools dominated by sprat. The mean body length of both herring and sprat was biased as a function of their relative importance in the school suggesting that the fish schools were assorted by size. However, switching to a fish school dominated by the other species increased the individual body length variation relative to the group average. Diets of both species overlapped strongly but the feeding rate of sprat was significantly lower than that of herring. Our results suggest that during estuarine residency young sprat suffer the consequences of the school trap, possibly to profit from reduced predation risks in herring schools.

 Top | Auteurs