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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences >
Peer-reviewed Journal Articles, etc >
Male copulatory behavior interrupts Japanese flying squid Todarodes pacificus female spawning activity
| 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)
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Submitter: Puneeta Pandey
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