Volume 47
Aspectos reproductivos del pez espada, Xiphias gladius de las aguas oceanicas de Venezuela
Authors
Bermúdez Moreno, P.E.; González Cabellos, L.W.; Eslava, N.E. Download PDF Open PDF in BrowserOther Information
Date: 2005
Pages: 631-649
Event: Proceedings of the Forty Seventh Annual Gulf and Caribbean Fisheries Institute
City: Fort Pierce, Florida
Country: USA
Abstract
Some reproductive aspects of the swordfish, Xiphias gladius were studied from February 1990 to April 1991 in the area 12° - 15° N and 65° - 66° W through the use of a drift longline on board the PROPESCA I boat. Out of the 448 captured individuals 207 were males (46.21 %) between 62 - 216 cm LJFL and 241 females (5.79 %) to 75 - 277 cm LJFL. The mean sex ratio was 1:1,16 in all periods. Males and females showed statistical differences in length (ts = 4.82 ; P > 0.05). The length at which the 50 % of the female population matures was 166 cm LJFL and the minimum size 126 cm LJFL. X. gladius do not spawn in Venezuelan waters. Fecundity was between 5,628,150 to 20,531,500 ovules with a mean of 1,.550,568 ±7,057,500 mature ovules (n = 3) and the relative fecundity was between 5,155 to 25,170 ovules per gram of weight with a mean of mature 13,819 ovules.