Male‑biased sex ratio in the crawling individuals of an invasive naticid snail during summer: implications for population management

Scientific Reports 12 巻 7911- 頁 2022-05-12 発行
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タイトル ( eng )
Male‑biased sex ratio in the crawling individuals of an invasive naticid snail during summer: implications for population management
作成者
Yoshida Kazuki
Setogawa Tomoka
Sato Toshiyuki
Yamada Manabu
Sato Tatsuma
Narita Kaoru
Matsumoto Akira
収録物名
Scientific Reports
12
開始ページ 7911
抄録
The naticid snail Laguncula pulchella is an invasive species that preys on clams in tidal flats and has serious impacts on clam fisheries in Japan. Laguncula pulchella burrow in sand, but often crawl on sediment surfaces during low tide. We investigated seasonal changes in the abundance and sex ratio of crawling L. pulchella during the daytime at Matsukawaura Lagoon, Japan, from March to October from 2015 to 2019. The density of crawling individuals peaked in July. The sex ratio of crawling individuals varied with months and years but was significantly biased towards males during the main copulation period (July–August); males accounted for 77–98% of the mature crawling individuals (≥ 25 mm shell height). The somatic condition of mature males declined from June to August, whereas that of females was constant during this period. These results indicate that mature males actively come to the sand surface during low tide to search for females for copulation from July to August. Fishermen make efforts to remove crawling individuals in summer, but the male-biased sex ratio must also be considered for effective population control of this species.
著者キーワード
Behavioural ecology
Invasive species
内容記述
This study was partly supported by JSPS KAKENHI Grant Number 19K06207.
言語
英語
資源タイプ 学術雑誌論文
出版者
Nature Research
発行日 2022-05-12
権利情報
© The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http:// creat iveco mmons. org/ licen ses/ by/4. 0/.
出版タイプ Version of Record(出版社版。早期公開を含む)
アクセス権 オープンアクセス
収録物識別子
[ISSN] 2045-2322
[DOI] 10.1038/s41598-022-12144-1
[DOI] https://doi.org/10.1038/s41598-022-12144-1