Spawning by jumbo squid Dosidicus gigas in San Pedro Mártir Basin, Gulf of California, Mexico
Spawning by jumbo squid Dosidicus gigas in San Pedro Mártir Basin, Gulf of California, Mexico
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巨型鱿鱼 Dosidicus gigas 在墨西哥加利福尼亚湾圣佩德罗·马蒂尔盆地产卵
DOI：
10.3354/meps313125
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发表时间：
2006
影响因子：
2.5
通讯作者：
M. Beman
中科院分区：
文献类型：
--
作者：
W. Gilly;C. Elliger;C. Salinas;Susana Camarilla;Gastón Bazzino;M. Beman
东太平洋网纹乌贼由于形态上的极端相似性、对早期生活史和个体发育的零碎认识，以及大多数地区2个或2个以上物种的成体共存，在物种水平上极难识别。我们使用分子遗传学方法来鉴定在加利福尼亚州中部圣佩德罗·马蒂尔盆地地区捕获的副鳞鳞足目幼虫和幼虫。对线粒体基因细胞色素c氧化酶I的序列分析表明，所有被分析的标本(3尾副翼鱼和11尾幼鱼)都是大圆线虫，并明确排除了其他候选物种，特别是瓜拉尼斯鱼(Stheno-teuthis oualanisis)。取发育完整大小范围的副翼(外套膜长度1~10 mm)，最小的为孵化时预期的大小。此外，还观察到一对正在进行假定交配行为的成对成虫。综上所述，这些发现表明，在该地区发生了交配、产卵和早期发育。
Paralarvae of ommastrephid squid in the eastern Pacific Ocean are exceedingly difficult to identify at the species level due to extreme morphological similarities, fragmentary knowledge of early life history and ontogeny, and the co-occurrence of adults of 2 or more species in most areas. We employed molecular genetic methods to identify ommastrephid paralarvae and juveniles captured in the area of the San Pedro Martir basin in the central Gulf of California. Sequence analysis of a mito- chondrial gene, cytochrome c oxidase I, identified all specimens analyzed (3 paralarvae and 11 small juveniles) as Dosidicus gigas and definitively ruled out other candidate species, specifically Stheno- teuthis oualaniensis. Paralarvae of the complete developmental size range were taken (1 to 10 mm mantle length), the smallest being the size expected for D. gigas at hatching. In addition, pairs of coupled adult D. gigas engaged in putative mating behavior were observed. Taken together, these findings indicate that mating, spawning and early development of D. gigas occur in this area.