Genetic improvement of farmed tilapias: Biochemical characterization of strain differences in Nile tilapia

Macaranas, Julie M.; Agustin, L.Q.; Ablan, M.C.A.; Pante, Ma. Josefa R.; Eknath, Ambekar A.; Pullin, R.S.V.

doi:10.1007/bf00240920

Cited by 28 publications

(26 citation statements)

References 15 publications

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“…This could be of great importance for the future development of aquacultural strains, for the protection of small endangered populations (like those of small lakes such as Baringo or the Suguta River), and for biogeographical inferences. The first genetic studies concerned the characterization of aquacultural strains (Basio & Taniguchi, 1983;McAndrew & Majumdar, 1983;Maracanas et al, 1995). Only recently have some studies been undertaken on natural populations: Seyoum & Kornfield (1992a,b) reported a study of East African populations, Rognon (1993) and coworkers (1996) studied natural West African populations.…”

Section: Introductionmentioning

confidence: 99%

Genetic differentiation among natural populations of the Nile tilapia Oreochromis niloticus (Teleostei, Cichlidae)

Agnèse

Adépo-Gourène

Abban³

et al. 1997

Heredity

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We analysed the genetic differentiation among 17 natural populations of the Nile tilapia Oreochromis niloticus (Linnaeus, 1758) using allozymes and restriction fragment length polymorphism (RFLP) of mitochondrial DNA (mtDNA). The populations studied, from the River Senegal to Lake Tana and from Lake Manzalla to Lake Baringo, represent all subspecies which have been previously described. Sixteen variable nuclear loci showed that these populations can be clustered in three groups: (1) West African populations (Senegal, Niger, Volta and Chad drainages), (2) Ethiopian Rift Valley populations (Lakes Awasa, Ziway, Koka and the Awash River) and (3) Nile drainage (Manzalla, Cairo, Lake Edward) and Kenyan Rift Valley populations (Lakes Turkana, Baringo and River Suguta). Nine different mtDNA haplotypes were found in the RFLP analysis of a 1 kb portion of the D-loop region. The network obtained showed that there are three geographically distinct groups; all West African populations and 0. aureus are clustered, the two Ethiopian Rift Valley populations are distinct and between these two groups are the Kenyan and Ugandan Rift Valley populations. Nile populations show affinities both with West African populations and with specimens from Lakes Tana and Turkana. Taxonomic and biogeographical implications of these results are discussed.

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Section: Introductionmentioning

confidence: 99%

Genetic differentiation among natural populations of the Nile tilapia Oreochromis niloticus (Teleostei, Cichlidae)

Agnèse

Adépo-Gourène

Abban³

et al. 1997

Heredity

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“…Trewavas (1980Trewavas ( , 1982Trewavas ( , 1983 opined that the mouth-brooders originated from substrate spawners and then separated into two types; the more conservative one as Sarotherodon whereas the progressive one became Oreochromis. Allozyme data from tilapiine fish have been reported and analysed by several authors (Kornfield et al, 1979;McAndrew & Majumdar, 1984;van der Bank et al, 1989;Sodsuk & McAndrew, 1991;Stiassny, 1991;Macaranas et al, 1995;Pouyaud & Agnèse, 1995;Sodsuk et al, 1995) to clarify these controversial points. The traditional methods of cluster analysis giving tree representations have been followed by these authors for their analysis of the data.…”

Section: Abbreviationmentioning

confidence: 99%

“…Results from the data of McAndrew & Majumdar (1984) are compared here with the more extensive data of Sodsuk & McAndrew (1991) and significant results presented from a new analysis of the data of Pouyaud & Agnèse (1995). The application of the method is demonstrated at the level of strains (rather than species) with the data of Macaranas et al (1995), which compared different strains of Nile tilapia. While the first three data sets refer to long-term evolution, the last is for short-term evolution.…”

Section: Abbreviationmentioning

confidence: 99%

Multivariate map representation of phylogenetic relationships: application to tilapiine fish

B-Rao

Majumdar

1998

Journal of Fish Biology

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Distance matrices obtained from allozyme studies on tilapiine fish are analysed by a multivarite approach. A hierarchical clustering procedure facilitated comparison with tree representations. A map-like representation provided information additional to the tree representation. The current belief that Sarotherodon is closer to Oreochromis than to Tilapia is strengthened. But while it may be the link between these genera at the species level, it is not entirely distinct from Oreochromis at the molecular level. Further, Sarotherodon and Oreochromis species may have arisen from Tilapia in several speciation events. Some of the species interrelations agreed with inferences from morphological data, and disagreed with those from a consensus maximum parsimony (MP) tree. It is suggested that both Chromidotilapia guntheri and Tylochromis jentinki are ancestral to different sub-groups of Tilapia, so that inferences from morphological studies and the consensus MP method are both partially correct. The graphical representation also suggests that the Nile tilapia strains in Asia may be derived from Egypt rather than from Ghana. It is advantageous to use the map-like and tree representations together for maximum visual informativeness and inference from the data. 1998 The Fisheries Society of the British Isles

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“…The use of impure strains of tilapia as brood stock for aquaculture lowers productivity, which is expressed as lower survival and lower growth rates. Lower growth rate of farmed tilapias due to impure stocks was a serious problem in major tilapia farming countries of Asia, such as Thailand and Phillipines [8], and was the rationale underlying the international effort that developed the GIFT strain [9]. Inter-specific hybridization in tilapias in Kenya is reviewed, and the possible effects of this on species diversity and production discussed (Table 1).…”

Section: Introductionmentioning

confidence: 99%

Interspecific Hybridization of Tilapiines in Lake Victoria, Kenya

Ag¹,

Wa²,

Brian³

2017

J Fisheries Livest Prod

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Genetic improvement of farmed tilapias: Biochemical characterization of strain differences in Nile tilapia

Cited by 28 publications

References 15 publications

Genetic differentiation among natural populations of the Nile tilapia Oreochromis niloticus (Teleostei, Cichlidae)

Genetic differentiation among natural populations of the Nile tilapia Oreochromis niloticus (Teleostei, Cichlidae)

Multivariate map representation of phylogenetic relationships: application to tilapiine fish

Interspecific Hybridization of Tilapiines in Lake Victoria, Kenya

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