Acta Adriatica, Vol. 59 No. 2, 2018.
Izvorni znanstveni članak
https://doi.org/10.32582/aa.59.2.3.
Interaction between small pelagic purse seine fishery and its top predators - case study in the eastern Adriatic Sea
Barbara Zorica
; Institut za oceanografiju i ribarstvo, Šet. I. Meštrovića 63, 21000 Split, Hrvatska
Vanja Čikeš Keč
; Institut za oceanografiju i ribarstvo, Šet. I. Meštrovića 63, 21000 Split, Hrvatska
Kristijan Zanki
; Sardina d.o.o, Ulica Ratac 1, 21400 Postira, Hrvatska
Leon Grubišić
; Institut za oceanografiju i ribarstvo, Šet. I. Meštrovića 63, 21000 Split, Hrvatska
Tanja Šegvić-Bubić
; Institut za oceanografiju i ribarstvo, Šet. I. Meštrovića 63, 21000 Split, Hrvatska
Sažetak
Due to very good collaboration with one commercial purse seiner, using “Srdelara” and operating in fishing zone G, preliminary data concerning the interaction between small pelagic purse
seine fishery and its predators were obtained. According to the notes taken by experience observer on-board in period from year 2013 to 2016, seems that tunas, dolphins and swordfish were the faithful companions of purse seiner fisherman with abundance of 68.6%, 22.0% and 9.4%, respectively. Although they were present all year round, their monthly pattern of appearance indicated that less tunas were recorded in May-June, more dolphins were noted from July to October while swordfish were mostly abundant in winter (January-March). Within the investigated period, slightly increasing trend of tuna and dolphins’ appearance was recorded, although statistically not significant. Analysing possible correlation between purse seine catches and predator’s abundances, revealed
that appearance of tuna had negative impact on the catches (dispersion of schools), while realised catches in presence of dolphins were quite good so it seems that they tend to round up small pelagic fish schools.
Ključne riječi
sardine; anchovy; tuna; swordfish; dolphins; eastern Mediterranean
Hrčak ID:
215070
URI
Datum izdavanja:
20.12.2018.
Posjeta: 1.295 *