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Genetic differences in growth among wild populations of the yabby, Cherax destructor (Clark) (2002)

Jerry, D R ; Purvis, I W ; Piper, L R

Oxford, UK : Blackwell Science Ltd

Aquaculture research 33 (2002), S. 0

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ISSN: 1365-2109

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Notes: Before commencing a breeding programme on a new aquaculture species, it is prudent to identify populations or strains with superior characteristics for commercial production. Information on the comparative performance of populations allows informed decisions to be made on the starting genetic base for the programme. As a precursor to a breeding programme in the decapod species, Cherax destructor (Clark), five geographically isolated populations were evaluated for the traits weight at age, abdomen length and abdomen width over a period of 9 months. Mean weight at age was found to vary among the populations by up to 42%, whereas mean abdomen length was similar among four out of the five populations. No differences were found in abdomen width. This study emphasizes that rapid genetic gains can be made simply by starting a breeding programme based on faster growing populations.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1046/j.1365-2109.2002.00742.x

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Genetic markers for the Booroola fecundity (Fec) gene in sheep (1994)

Lanneluc, I. ; Drinkwater, R. D. ; Elsen, J. M. ; [et al.]

Springer

Mammalian genome 5 (1994), S. 26-33

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ISSN: 1432-1777

Source: Springer Online Journal Archives 1860-2000

Topics: Biology , Medicine

Notes: Abstract Animals from the Booroola line of Australian Merino sheep are characterized by a high ovulation rate that can be attributed to the presence of a codominant allele (Fec B).The specific function of the gene has not been identified. Effective use of the trait within the sheep breeding industry requires one or more genetic markers that can distinguish between alternative alleles at the locus Fec. With a combination of DNA minisatellite markers and polymorphic protein markers, a cluster of seven minisatellite fragments has been identified as being linked to the Fec gene and to the ovine A blood group locus. The minisatellite fragments have been derived from multilocus probes and hence cannot be used to define the chromosomal location of the Fec gene or to serve as diagnostic markers for Fec. The derivation of cloned single locus markers from the minisatellite fragments will enable finer scale mapping of the Fec and the A blood group locus in sheep.