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Ecological and evolutionary consequences of alternative sex-change pathways in fish

التفاصيل البيبلوغرافية
العنوان: Ecological and evolutionary consequences of alternative sex-change pathways in fish
المؤلفون: C. Benvenuto, I. Coscia, J. Chopelet, M. Sala-Bozano, S. Mariani
المصدر: Scientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
بيانات النشر: Nature Portfolio, 2017.
سنة النشر: 2017
المجموعة: LCC:Medicine
LCC:Science
مصطلحات موضوعية: Medicine, Science
الوصف: Abstract Sequentially hermaphroditic fish change sex from male to female (protandry) or vice versa (protogyny), increasing their fitness by becoming highly fecund females or large dominant males, respectively. These life-history strategies present different social organizations and reproductive modes, from near-random mating in protandry, to aggregate- and harem-spawning in protogyny. Using a combination of theoretical and molecular approaches, we compared variance in reproductive success (V k*) and effective population sizes (N e) in several species of sex-changing fish. We observed that, regardless of the direction of sex change, individuals conform to the same overall strategy, producing more offspring and exhibiting greater V k* in the second sex. However, protogynous species show greater V k*, especially pronounced in haremic species, resulting in an overall reduction of N e compared to protandrous species. Collectively and independently, our results demonstrate that the direction of sex change is a pivotal variable in predicting demographic changes and resilience in sex-changing fish, many of which sustain highly valued and vulnerable fisheries worldwide.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2045-2322
Relation: https://doaj.org/toc/2045-2322
DOI: 10.1038/s41598-017-09298-8
URL الوصول: https://doaj.org/article/6cead90da41149f4962141451385f72a
رقم الأكسشن: edsdoj.6cead90da41149f4962141451385f72a
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:20452322
DOI:10.1038/s41598-017-09298-8