Article (Scientific journals)
Fertility in first-generation hybrids of roach, Rutilus rutilus (L.), and silver bream, Blicca bjoerkna (L.)
Nzau Matondo, Billy; Nlemvo, A. B.; Ovidio, Michaël et al.
2008In Journal of Applied Ichthyology, 24 (1), p. 63-67
Peer Reviewed verified by ORBi
 

Files


Full Text
JAI2008-hybrids.pdf
Publisher postprint (154.76 kB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Rutilus rutilus; siver bream; Blicca bjoerkna
Abstract :
[en] Fertility in first-generation hybrids of roach, Rutilus rutilus, and silver bream, Blicca bjoerkna, was investigated. Sperm and egg production of hybrids at first sexual maturity were examined. Eggs from female hybrids were artificially fertilized with the sperm of a corresponding hybrid male; a hybrid male from the reciprocal crossbreeding; a parental species male R. rutilus; and a parental species male B. bjoerkna. The results revealed that gametogenesis was normal in female hybrids. However, in male hybrids, a low efficiency of gametogenesis was observed. The semen of male hybrids was extremely dilute, with spermatozoa concentration lower than that in parental species. Nevertheless, these F1 hybrids (males and females) from reciprocal crossbreeding were fertile. F2 and backcross generations were produced, but F2 crosses from the female hybrid and corresponding hybrid male displayed a drastically slower hatching rate. Also higher proportions of deformed embryos were hatched than in other post-F1-generation crosses.
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Nzau Matondo, Billy  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Biologie du comportement - Ethologie et psychologie animale
Nlemvo, A. B.
Ovidio, Michaël  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Démographie des poissons et hydroécologie
Poncin, Pascal ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Biologie du comportement - Ethologie et psychologie animale
Philippart, Jean-Claude ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Biologie du comportement - Ethologie et psychologie animale
Language :
English
Title :
Fertility in first-generation hybrids of roach, Rutilus rutilus (L.), and silver bream, Blicca bjoerkna (L.)
Publication date :
2008
Journal title :
Journal of Applied Ichthyology
ISSN :
0175-8659
eISSN :
1439-0426
Publisher :
Blackwell Publishing, Berlin, Germany
Volume :
24
Issue :
1
Pages :
63-67
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 06 February 2009

Statistics


Number of views
88 (14 by ULiège)
Number of downloads
88 (2 by ULiège)

Scopus citations®
 
6
Scopus citations®
without self-citations
4
OpenCitations
 
1

Bibliography


Similar publications



Contact ORBi