Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Genetic improvement of marron Cherax tenuimanus Smith and yabbies Cherax spp. in Western Australia.

Abstract

A review. Marron and yabbies are farmed commercially in Western Australia and are native and introduced species respectively. Studies into the taxonomy and growth of marron and yabbies, which have shown variation between geographically isolated populations, and the use of this variation for selection of strains that demonstrate desirable traits for aquaculture, such as improved growth rates, are discussed. Selection of characteristics in captive stock that are heritable, such as growth rate, tail and chelae size in marron and growth rates and size at sexual maturity in yabby is discussed. Prevention of reproduction of yabbies by stocking monosex populations is described. Hybridization of yabby populations as a method of controlling reproduction, which has also revealed a hybrid cross that consistently produces only male progeny, is discussed.