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 504396
Title Seasonal migration of the starry smooth-hound shark Mustelus asterias as revealed from tag-recapture data of an angler-led tagging programme
Author(s) Breve, N.W.P.; Winter, Hendrik V.; Overzee, H.M.J. van; Farrell, E.D.; Walker, P.
Source Journal of Fish Biology 89 (2016)2. - ISSN 0022-1112 - p. 1158 - 1177.
DOI http://dx.doi.org/10.1111/jfb.12994
Department(s) IMARES Onderzoeksformatie
Publication type Refereed Article in a scientific journal
Publication year 2016
Keyword(s) EU action plan on sharks - rototag - shark angling - seasonal migration - Triakidae
Abstract The primary aim of this long-term angler-led tagging programme was to gain information about seasonal changes in distribution of the starry smooth-hound shark Mustelus asterias, along theDutch coast for management and conservation purposes. Between 2011 and 2014, M. asterias comprised 92·6% (n=2418) of the total elasmobranch catch (n=2612) by the licenced group of taggers within the Dutch Delta of which 2244 M. asterias were fin-tagged with plastic rototags. Sex and total length (LT) composition inside the eastern tidal basin(Oosterschelde) were significantly different, i.e. more females and larger individuals, than outside indicating a pupping ground, which was confirmed by the capture of 30 newborn pups (≤32 cm). The distribution pattern of reported recaptured M. asterias (return-rate 3·6%, n=80) showed a circannual migration between summering in the southern North Sea and wintering in the English Channel and the Bay of Biscay, and suggests that M. asterias is philopatric. The
Dutch angling season for M. asterias runs from approximately mid-May to mid-October when the water temperature is above 13∘ C. Recaptures of eight mature females, but no males in the Bay of Biscay, indicate partial spatial segregation by sex, where mature females migrate over larger distances than immature females and males. These observations, with the absence of recaptures in other known
summering areas (i.e. the Irish Sea and Bristol Channel), suggest that the southern North Sea is used by a separate population. Implications for management and recommendations to improve and expand the study approach are discussed.
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