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First Report of Gynandromorphy in Parthenogenetic Artemia (Branchiopoda: Anostraca)

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AbstractWe describe three diploid gynandromorphs in Artemia. Two belong to A. parthenogenetica and represent the first report of gynandromorphy for the species. One specimen was a female with a globular brood-pouch and gynandromorphic second antennae, whilst the other was a female with a closed malformed brood-pouch filled with live nauplii, and a long, mobile, penis-like structure projecting from the left side of the genital segments. Offspring from the latter parthenogenetic gynandromorph developed as normal all-female parthenogenetic Artemia. The third gynandromorph belongs to the zygogenetic species A. franciscana, being a female with claspers as previously reported in the same taxon. The occurrence of parthenogenetic gynandromorphs is best explained in light of sex determination mechanisms supporting the view that gynandromorphy might be triggered by a mitotic chromosomal mutation during early embryonic development.

Affiliations: 1: Centro de Investigaciones Biológicas del Noroeste S.C. Apartado Postal 128, La Paz, Baja California Sur, 23000, México (corresponding author (AMMM): almaeda04@cibnor.mx)

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/content/journals/10.1651/c-2620.1
2006-01-01
2016-12-09

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