Variations in female swordtip squid Uroteuthis edulis life history traits between southern Japan and northern Taiwan (Northwestern Pacific).
Variations in female swordtip squid Uroteuthis edulis life history traits between southern Japan and northern Taiwan (Northwestern Pacific).
复制标题
日本南部和台湾北部（西北太平洋）雌性剑尖乌贼 Uroteuthis edulis 生活史特征的变化。
DOI：
10.1007/s12562-020-01465-7
复制
发表时间：
2020
影响因子：
1.9
通讯作者：
Yoko Iwata
中科院分区：
文献类型：
--
作者：
Yumeng Pang;Chih-Shin Chen;Yoko Iwata
剑尖乌贼是西北太平洋沿岸重要的商业物种，包括日本和台湾的沿海水域。尽管福子很重要。在水产渔业方面，以前对西北太平洋种群生活史特征(生长速度、成熟时的大小和繁殖力)的研究都是本地化的和区域特有的。因此，我们报告了日本南部和台湾北部水域雌性剑尾乌贼的生活史特征，以确定每个种群内的季节变化，以及它们之间的地理差异。生活史特征的变异，包括生长速度、成熟时的外套长度(ML)和雌性生殖特征(性腺指数、繁殖力和卵大小)，在这两个种群中都被描述和识别为季节性变化。日本冬季产卵鱼的增长率最高，其次是春季产卵鱼和夏季产卵鱼。台湾的春季产卵鱼比秋季产卵鱼成熟得更早。据报道，种群之间的地理差异：日本春季产卵者的繁殖力水平和卵大小与台湾春季和秋季产卵者不同，但日本夏季产卵者的繁殖力水平和卵大小与台湾春季和秋季产卵者相似。生活史特征的季节和地理变化数据。蓝藻对有效的鱿鱼渔业管理很有用。
Swordtip squidUroteuthis edulisis a commercially important species in coastal waters throughout the Northwestern Pacific, including those of Japan and Taiwan. Despite the importance ofU. edulisto fisheries, previous studies on the life history traits (growth rate, size at maturity, and fecundity) of its populations in the Northwestern Pacific have been localized and region specific. Thus, we report life history traits of female swordtip squid from the waters off southern Japan and northern Taiwan, to identify seasonal variations within each population, as well as geographical variations between them. Variations in life history traits, including growth rate, mantle length (ML) at maturity, and female reproductive traits (gonadosomatic index, fecundity and egg size), are described and recognized to vary seasonally in both populations. Winter spawners in Japan have the highest growth rate, followed by spring spawners and summer spawners. Spring spawners in Taiwan mature at a younger age than autumn spawners. Geographical variations between populations are reported: fecundity level and egg size of spring spawners in Japan differ from those of spring and autumn spawners in Taiwan, but those of summer spawners in Japan are similar to those of spring and autumn spawners in Taiwan. Data on seasonal and geographical variations in life history traits ofU. edulisare useful for effective squid fisheries management.