Abstract

The genus, Artemia, consists of bisexual and parthenogenetic strains. In North America, only bisexual species are found, whereas in Europe, Asia and Africa, bisexual and parthenogenetic populations occur. Females of most Artemia strains reproduce ovoviviparously and oviparously, releasing either nauplius larvae or encysted embryos, respectively (Jackson and Clegg, 1996; Liang and MacRae, 1999) (Figure 1). Reproductive mode may switch, in good rearing conditions Artemia tend to reproduce ovoviviparously, whereas under adverse situations they reproduce oviparously. Females differ in their genetic tendency to reproduce either ovoviviparously or oviparously.

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