Spatiotemporal analysis of sexual maturity ofyellowfin tuna (Thunnus albacares) in thetropical eastern Pacific Ocean.
Keywords:
Maturity index, reproduction, tuna, Thunnus albacaresAbstract
Adescriptive analysis of the time-space variation of the maturity index (IG) for Thunnus albacares caught by the Mexican purse seine fleet, inside and out of the Mexican economic exclusive zone (ZEEM), during 1988-1989, shows that yellowfin tuna begins maturation as it reaches 65 cm of fork length. The values of maximum maturity were detected from February to November, with greater reproductive activity in February, May, August and October, being much more intense during august and October, probably because in these months the majority of specimens larger than the 100 cm fork length. The most important reproductive zones inside the ZEEM were located at 1(25°- 30°N y 115°- 120°W), 4 (20°- 25°N y 105°-110°W), 8 (10°- 15°N y 95°- 100°W) and outside ZEEM in 03°- 06°N y 115°- 125°W.
Downloads
Downloads
Published
Data Availability Statement
As of December 14, the references and links of the article were available for verification.