On the biology and food of small-sized fish from the north and baltic sea areas. II. Investigation of a shallow stony ground off Møn, Denmark
1979; Taylor & Francis; Volume: 18; Issue: 2 Linguagem: Inglês
10.1080/00785326.1979.10425498
ISSN0078-5326
Autores Tópico(s)Isotope Analysis in Ecology
ResumoAbstract Studies on the food contents of Gobius niger L., Pomatoschistus microps (Krøyer) and Pungitius pungitius (L.) from a shallow stony ground off Møn (Denmark) in the Baltic Sea showed that they are carnivores. Based on numbers the main food for G. niger is gammarids and isopods; for P. microps it is isopods and copepods, and for P. pungitius it is gammarids and copepods. Calculated as biomass, gammarids are the most important food organisms for all three species. The food demand of the free-swimming P. pungitius was found to be five times that of the two bottom dwelling gobies. The trophic niches of the two gobies overlap strongly, whereas they only overlap to a much lesser degree with that of the nine-spined stickleback.
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