The early life strategy in the abundance of black sea bream, Acanthopagrus schlegelii in Hiroshima Bay

黑鲷是广岛湾重要的经济和观赏渔业资源。因此，该物种的股票生物量已恢复的股票增强计划。成体种群的繁殖可通过不同生命阶段的存活率来维持，主要是生殖、补充前和底栖补充事件。该计划的目的是在生命周期的早期检测最容易受到环境扰动，黑鲷在广岛湾。虽然黑鲷的生活习惯在大田河河口内的网站，本研究在广岛湾，显微图像的鸡蛋分布揭示了主要产卵场形式外海湾作为海洋产卵的物种。夜行性繁殖者的卵开花高峰期从五月底到六月中旬开始。第一批定居者于七月初抵达。招募后的喂养项目对他们的定居环境表现出高度的灵活性。

Up to now, black sea bream, Acanthopagrus schlegelii in Hiroshima Bay is an important commercial and sport fishing species. Thus stock biomass of this species has been restored by stock enhancement program. Abundance of adult stock may be sustained by survivorship at the different life stages, principally reproduction, pre-recruitment and benthic recruitment events. The objective of this program is to detect in the early life cycle that are most vulnerable to environmental perturbations, black sea bream in Hiroshima Bay. Although black sea bream habits at the Ota River estuary within the site of the present study in Hiroshima Bay, micro-graphical eggs distributions reveal main spawning grounds form outer the bay as being marine-spawned species. The peak blooming of eggs by nocturnal breeders was commenced form the end of May to mid-Jun. The first settlers arrived at the beginning of July. Feeding items of post-recruitment exhibited high flexibility against their settlements environments.