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Gill rakers' structure and feeding of some Mediterranean mullets (Abstract)
Guinea, J.; Fernández, F. (1989). Gill rakers' structure and feeding of some Mediterranean mullets (Abstract), in: De Pauw, N. et al. (Ed.) Aquaculture: a biotechnology in progress: volume 1. pp. 645
In: De Pauw, N. et al. (1989). Aquaculture: a biotechnology in progress: volume 1. European Aquaculture Society: Bredene. ISBN 90-71625-03-6. 1-592 pp.
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Documenttype: Congresbijdrage
Trefwoord
    Marien/Kust
Auteurs  Top 
  • Guinea, J.
  • Fernández, F.
Abstract
    A morphological comparative study has been done on the structures involved in the filtration of food in four species of juvenile and adult Mediterranean mullets (Mugil auratus Risso 1810, Mugil saliens Risso 1810, Mugil capito Cuvier 1829, and Mugil chelo Cuvier 1829). The relationship of these structures to the size of the food has been studied, measuring distances between filtration structures and comparing these with the ingestion of food particles of different sizes. The morphological study was made in gill rakers examined by scanning electron microscopy, quantitative experiments about the ingestion of particles of known sizes were carried out on M. auratus with an electronic particle counter. The ingestion of particulate material has been qualitatively controlled for M. chelo. The first results indicate several structural differences between the species studied and also a hierarchy in the gill rakers distances, between the adult individuals of the four species. The minimal size of ingested particles is very close to the minimal distance between processes of the gill rakers of the fifth branchial arch, except for M. saliens. There are clear differences in gill rakers distances, between juveniles and adults of M. chelo and M. saliens.
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