De Souza Allyson S, Dias Júnior Eurico A, Galetti Pedro M, Machado Erik G, Pichorim Mauro, Molina Wagner F
Departamento de Biologia Celular e Genética, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, RN, Brasil.
Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, SP, Brasil.
An Acad Bras Cienc. 2015 Mar;87(1):121-36. doi: 10.1590/0001-3765201520130411.
The Epinephelidae form a group of species of high biological and economical interests. It´s phylogeographic patterns are not well known especially the distributed populations in the western region of the Atlantic Ocean. Among the representatives is a small species called Cephalopholis fulva, Coney, which presents a wide geographical distribution, polychromia, hermaphroditism and is quickly becoming a large target for the exploration of commercial fishing. The genetic and historical demography were obtained through the partial sequence analysis of Control Region from six locations on the coastline of Brazil from the northeast coast to the southwest coast, including the oceanic islands of Rocas Atoll and Fernando de Noronha Archipelago. The analyzed samples revealed a high genetic variability and a strong gene flow among the sampled locations. Additionally, the genetic data revealed that population expansions probably occurred due to the changes in the sea levels that occurred during the Pleistocene. The large population connectivity found in Coney constitutes relevant conditions for their biological conservation.
石斑鱼科是一类具有高度生物学和经济价值的物种。其系统地理学模式尚不为人所知,尤其是大西洋西部地区的分布种群。其中的代表物种是一种名为黄褐九棘鲈(Cephalopholis fulva)的小型石斑鱼,它分布广泛,具有多态性和雌雄同体现象,并且正迅速成为商业捕捞的主要目标。通过对巴西海岸线从东北海岸到西南海岸的六个地点(包括罗卡斯环礁和费尔南多·迪诺罗尼亚群岛等海洋岛屿)的控制区部分序列分析,获得了其遗传和历史种群动态信息。分析样本显示,采样地点之间存在高遗传变异性和强基因流。此外,遗传数据表明,种群扩张可能是由于更新世期间海平面的变化所致。在黄褐九棘鲈中发现的大量种群连通性为其生物保护构成了相关条件。