The Influence of Environment on the Morphology of Macrobrachium australiense (Decapoda: Palaemonidae)

摘要: The common endemic Australian freshwater prawn, Macrobrachium australiense is recognised as having potential a culture species. Across the species’ natural range high variation exists for external morphological traits of relevance to culture. Previous studies have demonstrated that can often be correlated with environmental factors. current study when exposed controlled environment, offspring two morphologically divergent wild stocks retain little their parental characteristics. When crossed and grown under identical conditions, ‘hybrids’ pure were uniform. A breeding growth trial within single stock variety temperatures resulted in variability offspring. These results suggest parameters rather than genotype may strongly influence phenotypic expression investigated. Morphological interest culture, such abdomen length width show low additive genetic variance hence not respond well traditional selective approaches designed improve attributes.