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首页> 外文期刊>Pacific Science: A Quarterly Devoted to the Biological and Physical Sciences of the Pacific Region >Life history and courtship Behavior of black perch, Embiotoca jacksoni (Teleostomi : Embiotocidae), from Southern California
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Life history and courtship Behavior of black perch, Embiotoca jacksoni (Teleostomi : Embiotocidae), from Southern California

机译：生活史和求爱行为来自南加州的黑鲈Embiotoca jacksoni（Teleostomi：Embiotocidae）的行为

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摘要

The black perch, Embiotoca jacksoni Agassiz, 1853, is a common reef fish associated with nearshore marine habitats of California, with the majority of the population occurring within the Southern California Bight. Black perch were collected throughout southern California from Santa Barbara to Carlsbad, including Santa Catalina Island, to determine their physical characteristics, growth, sex ratio, periodicity of reproduction, and length of gestation. Courtship observations were conducted using scuba along the Mug Harbor Breakwater in Redondo Beach, California, from January 2004 to December 2005 to verify periodicity of courting and associated reproductive behaviors. Specimens Captured ranged from 75 to 220 mm standard length and from 18 to 487 g in total body weight. Seven age-classes were determined by otolith aging, with the growth rate tapering off after age-class one. Seventy percent of the individuals captured were from age-classes one to three. Growth rates did not differ between sexes. Mean monthly gonosomatic indexes for males peaked from July to November, with the highest mean occurring in October. Gestating females were found from December to May, with youngest gestating females being in age-class one. Courtship behaviors were observed within aggregations and in pairs from July to November, with males being the primary aggressors. Courtship postures occurred along the base of the reef, with pairs departing into caves for copulation. This study suggests that the black perch population within the Southern California Bight has different life history characteristics and reproductive timing than those in northern California.
机译：黑色鲈鱼，Embiotoca jacksoni Agassiz，1853年，是与加利福尼亚近岸海洋栖息地相关的常见礁石鱼，大部分人口位于南加利福尼亚湾内。在整个加利福尼亚南部从圣塔芭芭拉（Santa Barbara）到卡尔斯巴德（Carlsbad），包括圣卡塔利娜岛（Santa Catalina Island），收集了黑鲈，以确定它们的身体特征，生长，性别比，繁殖周期和妊娠期。 2004年1月至2005年12月，在加利福尼亚州雷东多海滩的Mug港防波堤上使用水肺进行了求爱观察，以验​​证求爱的周期性和相关的生殖行为。标本的捕获范围为标准长度的75至220毫米，总重18至487克。通过耳石衰老确定了七个年龄等级，其中一个年龄等级之后生长速率逐渐降低。被捕获的人中有70％来自1至3岁年龄段。性别增长率没有差异。男性的平均每月性运动学指标在7月至11月达到峰值，最高的平均值发生在10月。在12月至5月期间发现了打手势的女性，最年轻的打手势女性处于年龄段。从7月到11月，在群体中成对观察到了求偶行为，其中男性是主要侵略者。沿珊瑚礁底部发生求偶姿势，成对成对进入洞穴进行交配。这项研究表明，南加利福尼亚湾地区的黑鲈种群具有与北加利福尼亚州不同的生活史特征和生殖时间。

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