墨西哥南太平洋鱿鱼的卵母细胞发育、卵巢内包装和产卵模式

IF 1 4区 生物学 Q3 ZOOLOGY Canadian Journal of Zoology Pub Date : 2023-10-31 DOI:10.1139/cjz-2023-0124
Hugo Guzmán Intzin, Carmen Alejo-Plata, Miguel Angel del Rio Portilla, Saúl Serrano Guzmán, Pedro Cervantes-Hernández
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引用次数: 0

摘要

鱿鱼Lolliguncula panamensis (Hoyle, 1904)在特万特佩克湾(墨西哥东南部)具有重要的商业和生态价值。本研究探讨了卵母细胞的发育模式,在卵巢中的包装,和产卵模式的这一未被研究的物种。巴拿马乳杆菌呈现卵母细胞分批同步生长,多次产卵,存在排卵后卵泡和闭锁卵泡,包括持续存在卵黄前和卵黄形成前的卵母细胞。成熟卵巢卵母细胞的大小频率在卵黄晚期和成熟卵母细胞之间表现出明显的形态和大小差异,表明卵母细胞通过这个大小范围的速度非常快。这些卵母细胞采用几何形状,使它们的包装有效地产卵。在卵巢内观察到卵黄原卵母细胞(鳞片型)的三维堆积。本研究结果表明,巴拿马乳杆菌的产卵行为可能是一种机会性的繁殖策略,即个体在短时间内多次产卵。我们认为这一策略可能是对特万特佩克湾复杂的区域海洋学条件的一种反应。
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Oocyte development, packing in the ovary, and spawning pattern of squid Lolliguncula panamensis in the Mexican South Pacific
Squid Lolliguncula panamensis (Hoyle, 1904) is of commercial and ecological importance in the Gulf of Tehuantepec (southeastern Mexico). This study examines the mode of oocyte development, packing in the ovary, and spawning pattern of this understudied species. L. panamensis presents a synchronous oocyte growth in batches, with multiple spawning, with the presence of post-ovulatory follicles and atretic follicles, including the constant presence of pre-vitellogenic and vitellogenic oocytes. The size frequencies of oocytes of ripe ovaries exhibit a pronounced morphological and size separation between the late yolk stage and mature oocytes, suggesting that the oocytes pass through this size range very fast. These oocytes adopt a geometrical shape that makes their packing efficient for spawning. One three-dimensional packing of vitellogenic oocytes (scutoid type) in the ovary was observed. The results of our study suggest that the spawning behavior of L. panamensis may constitute an opportunistic reproductive strategy in which individuals present multiple spawning over a brief period. We suggest that this strategy might be a response to complex regional oceanographic conditions of the Gulf of Tehuantepec.
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来源期刊
Canadian Journal of Zoology
Canadian Journal of Zoology 生物-动物学
CiteScore
2.40
自引率
0.00%
发文量
82
审稿时长
3 months
期刊介绍: Published since 1929, the Canadian Journal of Zoology is a monthly journal that reports on primary research contributed by respected international scientists in the broad field of zoology, including behaviour, biochemistry and physiology, developmental biology, ecology, genetics, morphology and ultrastructure, parasitology and pathology, and systematics and evolution. It also invites experts to submit review articles on topics of current interest.
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