Acta Adriatica, Vol. 59 No. 1, 2018.
Izvorni znanstveni članak
https://doi.org/10.32582/aa.59.1.10
Feeding habits of the striped red mullet, Mullus surmuletus in the eastern Adriatic Sea
Mišo PAVIČIĆ
; Institut za oceanografiju i ribarstvo, Set.I.Meštrovića 63, 21000 Split, Hrvatska
Jasna ŠILJIĆ
; Institut za oceanografiju i ribarstvo, Set.I.Meštrovića 63, 21000 Split, Hrvatska
Dajana BRAJČIĆ JURICA
; Institut za oceanografiju i ribarstvo, Set.I.Meštrovića 63, 21000 Split, Hrvatska
Sanja MATIĆ-SKOKO
; Institut za oceanografiju i ribarstvo, Šet. I. Meštrovića 63, 21000 Split, Hrvatska
Sažetak
Feeding habits of the striped red mullet, Mullus surmutetus in the eastern Adriatic Sea were investigated. Stomach contents of 203 specimens (11.5 - 32.9 cm TL) collected by bottom trawling
were analyzed. Commonly accepted procedures were followed during the diet composition inspection and standard keys were used for food items determination. Examinations showed that 39 identified prey taxa belong to 11 major systematic groups: Crustacea, Gastropoda, Bivalvia, Pisces, Cnidaria, Echinodermata, Polychaeta, Nematoda, Bryozoa, Algae and Rhizaria. The predominant
and preferred prey category was decapod crustaceans within all size categories and only in the largest individuals, the dominance of Bivalvia followed by Polychaeta and Crustacea were found.
The largest individuals also showed more variety in consumption of different prey categories and a higher mean number of prey items in comparison with smaller fish. No significant differences in
prey foraging between males and females \((p>0.05)\) and regarding to season \((p>0.05)\) were found. Feeding on such wide spectra of prey without significant variations regarding to sex and season suggests that the striped red mullets are able to adapt to shifts in spatio-temporal variations in the abundance of potential prey. Presence of detritus in the digestive tracts is highly related to its foraging behaviour on muddy detritic bottoms.
Ključne riječi
feeding; Mullus surmuletus; Adriatic Sea
Hrčak ID:
204589
URI
Datum izdavanja:
9.7.2018.
Posjeta: 1.829 *