Hybridisation between Pseudorasbora parva and Leucaspius delineatus

Gozlan, Rodolphe E.; Beyer, Kathleen. 2006 Hybridisation between Pseudorasbora parva and Leucaspius delineatus. Folia Zoologica, 55. 53-60.

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Hybridisation between introduced and native species is an increasingly important issue concerning environmental stakeholders because it decreases genetic integrity of native stocks. However, hybridisation could also happen between non-native species even if these species belong to different genera. Our study illustrates this particular aspect of alien species invasion with the attempt of artificial hybridisation between sunbleak Leucaspius delineatus and topmouth gudgeon Pseudorasbora parva, both recent additions to the freshwater fish fauna of England. The crossed fertilisation of L. delineatus ova with P. parva sperm lead to viable eggs with a very high hatching rate of 86% although hybrids failed to develop beyond the 1st larval step. Early morphological development of these hybrids was quantified and compared to the early development of the pure bred species.

Item Type: Publication - Article
Programmes: CEH Programmes pre-2009 publications > Water
UKCEH and CEH Sections/Science Areas: _ River Ecology
ISSN: 0139-7893
Format Availability: Electronic, Print
Additional Keywords: early life history, morphology, non-native, topmouth gudgeon, sunbleak
NORA Subject Terms: Biology and Microbiology
Date made live: 04 Jul 2007 09:11 +0 (UTC)

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