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Male copulatory behavior interrupts Japanese flying squid Todarodes pacificus female spawning activity

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Title: Male copulatory behavior interrupts Japanese flying squid Todarodes pacificus female spawning activity
Authors: Puneeta, Pandey Browse this author
Vijai, Dharmamony Browse this author
Yamamoto, Jun Browse this author →KAKEN DB
Sakurai, Yasunori Browse this author →KAKEN DB
Keywords: Batch spawning
Spawning interruption
Multiple paternity
Egg mass
Oceanic squid
Issue Date: 10-Jun-2016
Publisher: Inter-Research
Journal Title: Marine ecology progress series
Volume: 551
Start Page: 277
End Page: 281
Publisher DOI: 10.3354/meps011776
Abstract: Batch spawning, intermittent spawning and multiple spawning represent common reproductive strategies among cephalopods. These flexible spawning strategies are also common in fishes, and are thought to be a female trait that is programmed depending on environmental parameters. The ommastrephid squid Todarodes pacificus, being a terminal spawner, is considered to have a single spawning event, extruding one large egg mass and dying soon thereafter. Females that are interrupted by males exhibiting mating behavior, while extruding the egg mass, spawn multiple egg masses over the course of 2-3 d instead of dying soon after spawning the first egg mass. We demonstrate that male mating behavior causes 'forced' intermittent spawning by females (i.e. more than one spawning event). We hypothesize that in T. pacificus, some males use this strategy to mate with females unable to repel advances while spawning, thus providing the male with the opportunity to contribute sperm and enhance gene flow.
Type: article (author version)
URI: http://hdl.handle.net/2115/66141
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: Puneeta Pandey

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OAI-PMH ( junii2 , jpcoar )

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