All-male broods of Tilapia nilotica × T. aurea hybrids

Pruginin, Yoel; Rothbard, S.; Wohlfarth, Giora W.; Halevy, Amir; Moav, Rom; Hulata, Gideon

doi:10.1016/0044-8486(75)90086-1

Cited by 88 publications

(41 citation statements)

References 11 publications

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“…and expected to be largely male, but may show some proportion of females depending on their genotype for additional sex-modifying loci. Pruginin et al (1975) observed anywhere from 52 to 100% males in such pair crosses. This may, however, have been the result of using impure/contaminated stocks of one or both species.…”

Section: Discussionmentioning

confidence: 99%

Two unlinked loci controlling the sex of blue tilapia (Oreochromis aureus)

2004

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Sex determination in the blue tilapia (Oreochromis aureus) is thought to be a WZ-ZZ (female heterogametic) system controlled by a major gene. We searched for DNA markers linked to this major gene using the technique of bulked segregant analysis. We identified 11 microsatellite markers on linkage group 3 which were linked to phenotypic sex. The putative W chromosome haplotype correctly predicts the sex of 97% of male and 85% of female individuals. Our results suggest the W locus lies within a few centimorgans of markers GM354, UNH168, GM271 and UNH131. Markers onLG1 also showed a strong association with sex, and indicate the segregation of a male-determining allele in this region. Analysis of epistatic interactions among the loci suggests the action of a dominant male repressor (the W haplotype on LG 3) and a dominant male determiner (the Y haplotype on LG1). These markers have immediate utility for studying the strength of different sex chromosome alleles, and for identifying broodstock carrying copies of the W haplotype.

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Section: Discussionmentioning

confidence: 99%

Two unlinked loci controlling the sex of blue tilapia (Oreochromis aureus)

2004

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“…The first study of all-male interspecific hybrids [Hickling, 1960], and studies on additional species that followed [Pruginin et al, 1975;Hulata et al, 1983;Wohlfarth and Wedekind, 1991], suggested that all-male hybrids were produced when the heterogametic sex was different between the two parental species. For example, crossing an O. niloticus female …”

Section: Heredity Of Sex Determination In Tilapiamentioning

confidence: 99%

Genetics of Sex Determination in Tilapiine Species

Cnaani

Lee

Zilberman

et al. 2008

Sex Dev

215

210

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We identified DNA markers linked to sex determining genes in six closely related species of tilapiine fishes. The mode of sex determination differed among species. In Oreochromis karongae and Tilapia mariae the sex-determining locus is on linkage group (LG) 3 and the female is heterogametic (WZ-ZZ system). In O. niloticus and T. zillii the sex-determining locus is on LG1 and the male is heterogametic (XX-XY system). A more complex pattern was observed in O. aureus and O. mossambicus, in which markers on both LG1 and LG3 were associated with sex. We found evidence for sex-linked lethal effects on LG1, as well as interactions between loci in the two linkage groups. Comparison of genetic and physical maps demonstrated a broad region of recombination suppression harboring the sex-determining locus on LG3. Sex-specific recombination suppression was found in the female heterogametic sex. Sequence analysis showed the accumulation of repetitive elements in this region. Phylogenetic analysis suggests that at least two transitions in the mode of sex determination have occurred in this clade. This variation in sex determination mechanisms among closely related species makes tilapias an excellent model system for studying the evolution of sex chromosomes in vertebrates.

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“…The results of the present work manifested that the hybrid obtained from interspecific hybridization (♀ O. niloticus x ♂ O. aureus) and (♀ O. aureus x O. niloticus ♂) had significant superiority of growth performance under different levels of salinity up to 32 ppt compared with O. niloticus and O. aureus at the same salinity levels. Pruginin et al (1975); Wohlfarth et al (1983); El-Ebiary and Zaki (1999); Haroun (1999) reported that the hybrid of (♀ O. niloticus x ♂ O. aureus) had higher growth performance than that of both parents and other tilapia hybrids. Fang and Chiou (1989) reported that O. niloticus raised in seawater grew almost 60% slower than that raised in freshwater.…”

Section: Resultsmentioning

confidence: 99%

OProduction of salinity tolerant Nile tilapia, Oreochromis niloticus through traditional and modern breeding methods: 1- Application of interspecific hybridization with blue tilapia,Oreochromis aureus as traditional method

El-Zaeem

Salama

El-Maremie

2010

Egypt. J. of Aquatic Biolo. and Fish.

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ABSTRACThis study was conducted to produce a salinity tolerant Nile tilapia, Oreochromis niloticus through interspecific hybridization with Oreochromis aureus. Growth performance, proximate body composition, feed utilization, body amino acid profile and some reproductive characteristics of the offspring produced under different salinity levels were evaluated. The results revealed that the productive performance traits of (

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All-male broods of Tilapia nilotica × T. aurea hybrids

Cited by 88 publications

References 11 publications

Two unlinked loci controlling the sex of blue tilapia (Oreochromis aureus)

Two unlinked loci controlling the sex of blue tilapia (Oreochromis aureus)

Genetics of Sex Determination in Tilapiine Species

OProduction of salinity tolerant Nile tilapia, Oreochromis niloticus through traditional and modern breeding methods: 1- Application of interspecific hybridization with blue tilapia,Oreochromis aureus as traditional method

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