OVERVIEW OF TROPHIC LEVELS RECORDED IN TELEOST SPECIES FROM NORTHERN TUNISIAN WATERS (CENTRAL MEDITERRANEAN SEA)

OVERVIEW OF TROPHIC LEVELS RECORDED IN TELEOST SPECIES FROM NORTHERN TUNISIAN WATERS (CENTRAL MEDITERRANEAN SEA)

This paper reports about the observations made with regard to 21 teleost species comprising 1657 specimens from the northern Tunisian coast. These specimens were found in an area with sufficient prey species to allow them to live and develop, as confirmed by the size to total body weight relationshi...

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Bibliographic Details
Published in:Annales. Series historia naturalis Vol. 29; no. 1; pp. 85 - 90
Main Authors: Rafrafi-Nouira, Sihem, Diatta, Youssouph, Capapé, Christian
Format: Journal Article
Language:English
Published: Koper Scientific and Research Center of the Republic of Slovenia 01-01-2019
Subjects:
Animal behavior
Aquatic crustaceans
Body size
Body weight
Carnivores
Commercial fishing
Crustaceans
Fish
Fisheries
Fishing
Fishing methods
Food chains
Laboratories
Marine invertebrates
Prey
Sarpa salpa
Species
Taxonomy
Trophic levels
Philippines
France
Tunisia
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Summary:This paper reports about the observations made with regard to 21 teleost species comprising 1657 specimens from the northern Tunisian coast. These specimens were found in an area with sufficient prey species to allow them to live and develop, as confirmed by the size to total body weight relationship. The high values of vacuity index are probably due to both sampling and fishing methods. Crustaceans and teleosts are the prey most frequently consumed by these species. Additionally, the high trophic levels (TROPH) (± 3.00) indicated that these teleost species belong among carnivores. Of all the species examined, only one, Sarpa salpa with TROPH = 2.00, was found to be herbivorous.
ISSN:1408-533X
2591-1783
DOI:10.19233/ASHN.2019.09