Comparative study of feeding behaviour of five Mugilidae species juveniles from two estuarine systems in the North Aegean Sea

Salvarina, Ioanna; Koutrakis, Emmanuil; Leonardos, Ioannis

Comparative study of feeding behaviour of five Mugilidae species juveniles from two estuarine systems in the North Aegean Sea

Dateien

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Datum

2018

Autor:innen

Salvarina, Ioanna

Koutrakis, Emmanuil

Leonardos, Ioannis

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Biologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Journal of the Marine Biological Association of the United Kingdom. 2018, 98(02), pp. 283-297. ISSN 0025-3154. eISSN 1469-7769. Available under: doi: 10.1017/S0025315416001211

Zusammenfassung

Food is an important factor for the survival of juvenile fish. Knowledge of the diet of co-existing species helps clarify their relationships with each other. A number of Mugilidae species are known to co-exist in estuarine systems, raising the question of whether they compete for food resources. The feeding behaviours of five juvenile Mugilidae species were studied in the estuaries of Strymonikos (North Aegean Sea) using stomach content analysis. It was found that the species Chelon labrosus, Liza saliens and Mugil cephalus presented high feeding activity during summer and autumn and L. ramada and L. aurata during winter and spring. The diet overlap between the species was generally moderate to low and the pair L. saliens – M. cephalus exhibited the highest overlap in Richios estuarine system. The species do not appear to compete for common resources, probably because there is not always a spatiotemporal overlap, enough food is available or they exploit different resources. Four out of the five species exhibited similar patterns of feeding strategies with varying levels of specialization at an individual level and a rather generalized pattern at the population level. This more generalized feeding strategy may permit them to co-exist. Only M. cephalus showed a more specialized feeding behaviour, with a strong preference for microalgae. The absence of a general pattern for the trophic levels according to seasons, sizes or locations, also imply the opportunistic character of the species. Both season and fish size influenced the variation in the diet composition.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Zitieren

ISO 690

SALVARINA, Ioanna, Emmanuil KOUTRAKIS, Ioannis LEONARDOS, 2018. Comparative study of feeding behaviour of five Mugilidae species juveniles from two estuarine systems in the North Aegean Sea. In: Journal of the Marine Biological Association of the United Kingdom. 2018, 98(02), pp. 283-297. ISSN 0025-3154. eISSN 1469-7769. Available under: doi: 10.1017/S0025315416001211

BibTex

@article{Salvarina2018-03Compa-37280,
  year={2018},
  doi={10.1017/S0025315416001211},
  title={Comparative study of feeding behaviour of five Mugilidae species juveniles from two estuarine systems in the North Aegean Sea},
  number={02},
  volume={98},
  issn={0025-3154},
  journal={Journal of the Marine Biological Association of the United Kingdom},
  pages={283--297},
  author={Salvarina, Ioanna and Koutrakis, Emmanuil and Leonardos, Ioannis}
}

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