Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 360987
Title Multiple paternity analysis in the Thornback Ray Raja clavata L.
Author(s) Chevolot, M.; Ellis, J.R.; Rijnsdorp, A.D.; Stam, W.T.; Olsen, J.L.
Source Journal of Heredity 98 (2007)7. - ISSN 0022-1503 - p. 712 - 715.
Department(s) Wageningen Marine Research
Publication type Refereed Article in a scientific journal
Publication year 2007
Keyword(s) ginglymostoma-cirratum - carcharhinus-plumbeus - population-structure - british waters - nurse shark - north-sea - polyandry - behavior - dna - reconstruction
Abstract Skates (Rajidae) are characterized by slow growth rate, low fecundity, and late maturity and are thus considered to be vulnerable to exploitation. Although understanding mating systems and behavior are important for long-term conservation and fisheries management, this aspect of life history is poorly understood in skates. Using 5 highly polymorphic microsatellite loci, we analyzed egg clutches collected from 4 female Raja clavata captured in the wild to test for multiple paternity. Using the reconstructed multilocus genotypes method to explain the progeny genotype array, we showed that all 4 clutches were sired by a minimum of 4¿6 fathers and, thus, female thornback rays are polyandrous. Whether polyandry in R. clavata is natural or a consequence of overexploitation remains uncertain. This is the first report of multiple paternity in a rajiform species and any oviparous elasmobranch.
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