Spawning pattern of the neon flying squid <em>Ommastrephes bartramii</em> (Cephalopoda: Oegopsida) around the Hawaiian Islands
書誌事項
- タイトル別名
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- Spawning pattern of the neon flying squid Ommastrephes bartramii (Cephalopoda: Oegopsida) around the Hawaiian Islands
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The neon flying squid, Ommastrephes bartramii, is an oceanic squid species that is widely distributed in the North Pacific, with the winter-spring cohort spawning around the Hawaiian Islands. Here, we investigated the spawning characteristics of O. bartramii by analyzing various reproductive parameters of individuals (622 males, 108 females) collected in this region. Female spawning status was determined from the somatic indices and histological characteristics of the ovaries. At all developmental stages, the ovaries of spawned females contained oocytes, and oviduct fullness was not correlated with body size. Thus, because the eggs mature asynchronously, with multiple filling and evacuation events, this species is considered an intermittent spawner. Mature males with developed accessory glands were also present within the distribution range of healthy spawned females, indicating that mating occurs between spawning events. Our data indicate that the first spawning event occurs at a mantle length of similar to 520-540 mm for Hawaiian O. bartramii. Subsequently, the squid forage and grow, and refill the oviducts, before the second spawning event occurs.
収録刊行物
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- Scientia marina
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Scientia marina 78 (4), 511-519, 2014-12
Consejo Superior de Investigaciones Científicas (CSIC)
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詳細情報 詳細情報について
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- CRID
- 1050282813994684672
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- NII論文ID
- 120005537472
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- NII書誌ID
- AA10773609
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- ISSN
- 18868134
- 02148358
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- HANDLE
- 2115/57813
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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- IRDB
- Crossref
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