Alternative reproductive tactics in atlantic salmon: factors affecting mature parr success

Abstract

Restricted accessMoreSectionsView PDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareShare onFacebookTwitterLinked InRedditEmail Cite this article Thomaz D., Beall E. and Burke T. 1997Alternative reproductive tactics in atlantic salmon: factors affecting mature parr successProc. R. Soc. Lond. B.264219–226http://doi.org/10.1098/rspb.1997.0031SectionRestricted accessAlternative reproductive tactics in atlantic salmon: factors affecting mature parr success D. Thomaz D. Thomaz Department of Zoolog., University of Leicester, Leicester LE1 7RH, UK Google Scholar Find this author on PubMed Search for more papers by this author , E. Beall E. Beall INRA, Station d'Hydrobiologie, BP 3, 64310 St–Pée–sur–Nivelle, France Google Scholar Find this author on PubMed Search for more papers by this author and T. Burke T. Burke Department of Zoolog., University of Leicester, Leicester LE1 7RH, UK Google Scholar Find this author on PubMed Search for more papers by this author D. Thomaz D. Thomaz Department of Zoolog., University of Leicester, Leicester LE1 7RH, UK Google Scholar Find this author on PubMed Search for more papers by this author , E. Beall E. Beall INRA, Station d'Hydrobiologie, BP 3, 64310 St–Pée–sur–Nivelle, France Google Scholar Find this author on PubMed Search for more papers by this author and T. Burke T. Burke Department of Zoolog., University of Leicester, Leicester LE1 7RH, UK Google Scholar Find this author on PubMed Search for more papers by this author Published:22 February 1997https://doi.org/10.1098/rspb.1997.0031AbstractIn Atlantic salmon, as in most salmonids, males can mature early in the life cycle, as small freshwater fish, termed parr, and/or undergo a sea migration before maturing as full–size adults. The alternative life histories are contingent on environmental and social circumstances, such as growth rate, territory quality or any other factor that affects the individual's state. In order to model the choice of life history in this group of commercially valuable species, it is necessary to understand not only the relative contribution of the different male types to subsequent generations, but also to know the factors that affect reproductive success in each type.In this paper we present the results of a study designed to investigate the factors that affect the reproductive success of mature parr. We used highly polymorphic minisatellite DNA markers to analyse paternity in a series of mating experiments where the number and body size of parr were manipulated. The fraction of eggs fertilized by mature parr ranged from 26 to 40 per cent, with individual parr fertilizing up to 26 per cent of the eggs. A strong positive correlation was found between parr size and reproductive success. The relative success of parr decreased with increasing parr number. Data from this and other studies on variation in the timing and degree of parr reproductive success are discussed in relation to the evolution of male mating strategies and life history in salmonids. Previous ArticleNext Article VIEW FULL TEXT DOWNLOAD PDF FiguresRelatedReferencesDetailsCited by Mobley K, Aykanat T, Czorlich Y, House A, Kurko J, Miettinen A, Moustakas-Verho J, Salgado A, Sinclair-Waters M, Verta J and Primmer C (2021) Maturation in Atlantic salmon (Salmo salar, Salmonidae): a synthesis of ecological, genetic, and molecular processes, Reviews in Fish Biology and Fisheries, 10.1007/s11160-021-09656-w, 31:3, (523-571), Online publication date: 1-Sep-2021. Prévost A, Hill N, Grant J, Ardren W and Fraser D (2019) Patterns of reproductive success among reintroduced Atlantic salmon in two Lake Champlain tributaries, Conservation Genetics, 10.1007/s10592-019-01243-8, 21:1, (149-159), Online publication date: 1-Feb-2020. 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Koch I and Narum S (2021) An evaluation of the potential factors affecting lifetime reproductive success in salmonids, Evolutionary Applications, 10.1111/eva.13263 Smialek N, Pander J and Geist J (2021) Environmental threats and conservation implications for Atlantic salmon and brown trout during their critical freshwater phases of spawning, egg development and juvenile emergence, Fisheries Management and Ecology, 10.1111/fme.12507 This Issue22 February 1997Volume 264Issue 1379 Article InformationDOI:https://doi.org/10.1098/rspb.1997.0031Published by:Royal SocietyPrint ISSN:0962-8452Online ISSN:1471-2954History: Published online22/02/1997Published in print22/02/1997 License: Citations and impact Large datasets are available through Proceedings B's partnership with Dryad