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https://doi.org/10.32582/aa.62.1.3

Reproductive strategy of spiny gurnard Lepidotrigla dieuzeidei Blanc and Hureau, 1973 from the south-eastern Adriatic Sea

Tatjana Dobroslavić ; Sveučilište u Dubrovniku, Odsjek primjenjene ekologije, 20000 Dubrovnik, Hrvatska
Alexis Conides ; Hellenic Centre for Marine Research, 46.7 km Athens-Sounion, Anavyssos, Greece
Jadranka Sulić Šprem ; Prirodoslovni muzej Dubrovnik, Dubrovnik, Hrvatska
Branko Glamuzina ; Sveučilište u Dubrovniku, Odsjek primjenjene ekologije, 20000 Dubrovnik, Hrvatska
Vlasta Bartulović ; Sveučilište u Dubrovniku, Odsjek primjenjene ekologije, 20000 Dubrovnik, Hrvatska


Puni tekst: engleski pdf 2.313 Kb

str. 49-62

preuzimanja: 79

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Sažetak

This study provides the first data on the reproductive biology of the spiny gurnard Lepidotrigla dieuzeidei. A total of 1027 individuals were collected monthly from September 2011 to August 2012. The total length of the individuals in the sample ranged from 7.46 cm to 14.62 cm with a female to male ratio of 1 to 0.59. Positive allometric growth was observed for both females (b=3.07) and males (b=3.08). Variations of condition factor were similar in both sexes with mean values of 1.07 for females and 1.01 for males. The fish L. dieuzeidei had a long spawning period extending from November to July based on monthly values of gonadosomatic index. Histological analysis showed that this fish was multiple synchronous developments of ovaries with multiple spawning events. The ovaries were always represented with a group of primary oocytes and a diverse population of vitel-logenic oocytes, each specially recruited during the final stages of maturation in uniform or uneven phases. Batch fecundity was estimated gravimetrically using the hydrated oocyte method and was estimated to be around 558 to 10.230 oocytes per female. L. dieuzeidei is an important by-catch species and data from this study represent a valuable contribution to stock management.

Ključne riječi

oogenesis, spermatogenesis, gonad maturation, fecundity, oocyte diameter, multiple spawning fishes

Hrčak ID:

260963

URI

https://hrcak.srce.hr/260963

Podaci na drugim jezicima: hrvatski

Posjeta: 188 *