Cruz-Castán Roberto, Meiners-Mandujano César, Macías David, Jiménez-Badillo Lourdes, Curiel-Ramírez Sergio
Posgrado en Ecología y Pesquerías, Universidad Veracruzana, Boca del Río, Veracruz, Mexico.
Instituto de Ciencias Marinas y Pesquerías, Universidad Veracruzana, Boca del Río, Veracruz, Mexico.
PeerJ. 2019 Apr 2;7:e6558. doi: 10.7717/peerj.6558. eCollection 2019.
The aim of this study was to describe the reproductive dynamic of in the southwest Gulf of Mexico. The annual variation of the volume fraction occupied by gametes and tissues in gonads were related with main body indexes, such as the gonadosomatic index ( ), the hepatosomatic index ( ), and the nutrition index ( ), and compared with the sea surface temperature. A total of 951 individuals were sampled, where a sex ratio of 1:1 and a size interval strongly skewed towards organisms with a fork length ( ) of 36-40 cm were observed. The showed an increase from March to September with maximum values in April and July. Two clearly defined peaks were observed, and they were consistent with the histological analysis, where the percentage of ripe gametes predominated from April to September. The optimum thermal window for reproductive activity was from 24 to 28 °C. The size of first sex maturity was 34.35 cm of for males and 34.60 ( ) for females, without significant difference between sexes.
本研究的目的是描述墨西哥湾西南部[物种名称缺失]的繁殖动态。性腺中配子和组织所占体积分数的年变化与主要身体指标相关，如性腺指数（[性腺指数英文缩写缺失]）、肝体指数（[肝体指数英文缩写缺失]）和营养指数（[营养指数英文缩写缺失]），并与海面温度进行比较。共采集了951只[物种名称缺失]个体，观察到性别比为1:1，且大小区间强烈偏向叉长（[叉长英文缩写缺失]）为36 - 40厘米的生物体。[性腺指数英文缩写缺失]从3月到9月呈上升趋势，4月和7月达到最大值。观察到两个明确的峰值，这与组织学分析一致，在4月至9月期间成熟配子的百分比占主导。繁殖活动的最佳热窗口为24至28°C。雄性首次性成熟的大小为34.35厘米[相关长度单位缺失]，雌性为34.60（[相关长度单位缺失]），两性之间无显著差异。
