Environmental influence on life-history traits in male squid Uroteuthis edulis with alternative reproductive tactics
Environmental influence on life-history traits in male squid Uroteuthis edulis with alternative reproductive tactics
复制标题
环境对采用替代繁殖策略的雄性鱿鱼生活史特征的影响
DOI：
10.1007/s00227-022-04017-y
复制
发表时间：
2022
期刊：
影响因子：
2.4
通讯作者：
Iwata Yoko
中科院分区：
文献类型：
--
作者：
Pang Yumeng;Chen Chih-Shin;Kawamura Tomohiko;Iwata Yoko
鱿鱼的特点是灵活的生活史特征（LHTs）的变化，以应对不断变化的海洋参数。雄性替代生殖策略（ART），其特征是大尺寸的“配偶”与小尺寸的“运动鞋”，是常见的loliginid物种。本研究报告的LHTs的灵活性，男性鱿鱼显示艺术。比较了来自日本和台湾的季节性和地理群体中的鱿鱼配偶和运动鞋的LHT，包括体型、年龄、生长率和性腺-体细胞能量分配。配偶与运动鞋的比例在“日本暖”季节（6 - 11月）产卵的群体中最高，其次是“日本冷”季节（12 - 5月），台湾最低（春季和秋季）。按孵化季节和捕捞地点（Jwarm，Jcold和台湾队列）分开的队列之间的LHT进行了比较。虽然台湾配偶比日本配偶相对年轻，但配偶的平均体型在队列间没有差异。平均大小和年龄的运动鞋孵化时随着水温的升高而降低。配偶鱼和运动鞋的生长速度在不同的队列中略有不同，这与它们在生命早期（50-150天）耳石生长宽度的差异一致。配偶和运动鞋的增长率在台湾队列中最高，其次是Jwarm队列，Jcold队列最低。运动鞋投资更多的地幔和性腺重量比配偶在所有队列。在不同温度下，配偶和运动鞋的性腺-体细胞能量分配模式是一致的。你的LHT。edulisconsorts和运动鞋受温度的影响很大，运动鞋的柔韧性比consorts高。
Squid are characterized by flexible life-history traits (LHTs) that change in response to changing oceanic parameters. Male alternative reproductive tactics (ARTs), characterized by large-sized ‘consorts’ versus small-sized ‘sneakers’, are commonly observed in loliginid species. This study reports on LHTs flexibility in male squids displaying ARTs. LHTs of consorts and sneakers inUroteuthis edulis, including body size, age, growth rate and gonado-somatic energy allocation, were compared among seasonal and geographical groups from Japan and Taiwan. The ratio of consorts to sneakers was highest in the group spawning in the ‘Japan-warm’ season (June–November), followed by that of the ‘Japan-cold’ season (December–May), and lowest in Taiwan (spring and autumn). LHTs were compared among cohorts separated by hatching season and catch location (Jwarm, Jcold and Taiwan cohorts). Mean body size of consorts showed no difference among cohorts, although Taiwan consorts were relatively younger than Japan consorts. Mean size and age of sneakers decreased with increased water temperature at hatching. Growth rates of consorts and sneakers were slightly different among cohorts, in accordance with differences of statolith increment widths during their early life stage (50–150 days). Growth rates of both consorts and sneakers were highest in the Taiwan cohort, followed by the Jwarm cohort, with the Jcold cohort lowest. Sneakers invested more both in mantle and gonadal weights than consorts in all cohorts. Gonado-somatic energy allocation patterns of consorts and sneakers were consistent at different temperatures. LHTs ofU. edulisconsorts and sneakers were strongly influenced by temperature, with higher flexibility in sneakers than consorts.