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Distribution pattern of Galeus atlanticus in the Alborn Sea (south western Mediterranean) and some sexual character comparison with Galeus melastomus Rey, J.; Coelho, R.; Lloris, D.; Séret, B.; Gil de Sola, L. (2010). Distribution pattern of Galeus atlanticus in the Alborn Sea (south western Mediterranean) and some sexual character comparison with Galeus melastomus. Mar. Biol. Res. 6(4): 364-372. https://dx.doi.org/10.1080/17451000903042487 In: Marine Biology Research. Taylor & Francis: Oslo; Basingstoke. ISSN 1745-1000; e-ISSN 1745-1019 Ook verschenen in: Séret, B. (Ed.) (2010). European research focus on sharks and rays. Thematic Issue No. 3. Marine Biology Research, Spec. Issue 6(4). TAYLOR & FRANCIS AS: Bergen. 339-420 pp. https://dx.doi.org/10.1080/17451001003657729, meer

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Trefwoorden

Dimensions > Depth Distribution > Geographical distribution MED, Alboran Sea Reproduction Galeus atlanticus (Vaillant, 1888) [WoRMS] Alboran Sea [Marine Regions] Marien/Kust

Author keywords

Alboran Sea; depth distribution; Galeus atlanticus; geographicaldistribution; Mediterranean Sea; reproduction

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Auteurs		Top
Rey, J. Coelho, R. Lloris, D.	Séret, B. Gil de Sola, L.

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Abstract

Galeus atlanticus is a small-sized deepwater catshark living on the slope bottom of the Alboran Sea. Given its external similarities with Galeus melastomus, both species are often confused, which makes G. atlanticus a very poorly understood species both in terms of catches and biological aspects. For this study, a total of 741 G. atlanticus specimens, caught during scientific surveys from 1997 to 2003, were analysed. The distributional patterns were described and the reproductive status estimated. Galeus atlanticus occurred throughout the Alboran Sea, between the Strait of Gibraltar and Cape Gata, including the slope of the Island of Alboran. Its bathymetric range extended from 330 to 790 m and no size-depth trends have been observed. Mature specimens, both males and females, were caught in all seasons of the year. Size at first maturity was significantly different between sexes, with estimates of 32.9 cm for males and 36.9 cm for females. The differential growth of some secondary sexual characteristics, such as clasper length in males and oviducal gland diameter in females, were compared with those of G. melastomus.

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