Naslov
Ontogenetic and seasonal feeding of the annular seabream (Diplodus annularis L.) in Zostera sp. beds, eastern Adriatic Sea

Autori
Matić-Skoko, Sanja ; Antolić, Boris ; Kraljević, Miro

Izvornik
Journal of Applayed Ichthyology (0175-8659) 20 (2004); 376-381

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
feeding; seabream; Diplodus annularis; Adriatic Sea

Sažetak
The ontogenetic and seasonal feeding habits of 489 individuals od Diplodus annularis L. in Zostera sp. beds were studied usung frequence of occurrence, numeric percentage, percentage by weight and an index of relative importance (IRI). The Schoener overlap index was used to compare diets by fish size, and seasons. Diet composition including 18 different prey taxa was evidently heterogenous among annular seabream size groups, with no significant dietary overlap. In relation to body size, juveniles were omnivorous and preferred algae and plants, while adults were omnivorous and preferred animals. Principal prey items by decreasing importance were Chlorophyta (dominant taxa Cladophora sp. and Enteromorpha flexuosa), Decapoda (dominant species Upogebia pusilla), Gastropoda (important species Rissoa ventricosa and Alvania sp.), Bivalvia and Spermatophyta, as well as other food items (mostly unidentified Crustacea and fish eggs). Differences in diets among seasons were no significant.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA