Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Departamento de Recursos del Mar, Unidad Mérida, Antigua Carretera a Progreso km 6, Apartado Postal 73 Cordemex, Código Postal 97310, Mérida, Yucatán, México.
J Fish Biol. 2011 Oct;79(4):915-36. doi: 10.1111/j.1095-8649.2011.03062.x. Epub 2011 Sep 19.
In this study, sex ratio, spawning season, fork length (L(F)) at maturity (L(F50)), batch fecundity and spawning frequency were characterized for the continental population of Ocyurus chrysurus from the Campeche Bank, in the southern Gulf of Mexico. A total of 1657 specimens were collected from February 2008 to January 2009. The overall sex ratio (male:female) and sex ratios by size-class showed no significant differences from an expected 1:1 ratio. The Campeche Bank population did not conform to the reproductive seasonality pattern characteristic of a continental population. A protracted spawning season that extended from January to September with peaks occurring mainly between April and May and additionally in September was observed. The population conformed, however, to the sexual maturity pattern observed for populations and species associated with a continental margin. Fish of both sexes reached the onset of sexual maturity at a similar and small L(F) of c. 14 cm, and L(F50) (L(F) at which 50% of females and males become mature) was 21·3 and 19·4 cm. Asynchronous-type ovarian development was observed for this species and batch fecundity estimates ranged from 14,102 to 164,756 oocytes (mean ±S.D. = 43,852 ± 32,684 oocytes). The overall spawning frequency estimate was once every 8·3 days or 26 times during the 9 month spawning season.
在这项研究中，我们对来自墨西哥湾南部坎佩切海峡大陆架的 Ocyurus chrysurus 大陆种群的性比、繁殖季节、成熟叉长（L(F)）、批量产卵量和繁殖频率进行了描述。共收集了 1657 个样本，采集时间为 2008 年 2 月至 2009 年 1 月。总体性别比（雄性：雌性）和按体型大小划分的性别比与预期的 1:1 比例没有显著差异。坎佩切海峡种群不符合大陆种群特有的繁殖季节性模式。观察到一个从 1 月到 9 月的延长繁殖季节，主要高峰期在 4 月至 5 月和 9 月。然而，该种群符合与大陆架相关的种群和物种的性成熟模式。雌雄鱼在相似且较小的叉长（约 14 厘米）时开始性成熟，50%的雌性和雄性成熟时的叉长（L(F50)）为 21.3 和 19.4 厘米。观察到该物种的异步型卵巢发育，批量产卵量估计值在 14,102 到 164,756 个卵母细胞之间（平均值±标准差=43,852±32,684 个卵母细胞）。总体繁殖频率估计值为每 8.3 天繁殖一次，在 9 个月的繁殖季节共繁殖 26 次。
