Occurrence of a tumour-like abnormality in the telson skeleton of the brine shrimp Artemia (Branchiopoda, Anostraca)

in Crustaceana
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Malformations of crustaceans have been observed in their natural habitats as well as in laboratory studies. Two patterns of morphological abnormalities have been recorded in species of the brine shrimp genus Artemia, including a gynandromorphic pattern and a specimen with three compound eyes. Here we report a hitherto unknown pattern of morphological deformation, viz., a tumour-like abnormality that occurred in the telson skeleton of a specimen of Artemia from China.

Occurrence of a tumour-like abnormality in the telson skeleton of the brine shrimp Artemia (Branchiopoda, Anostraca)

in Crustaceana



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    Details of the telsons of specimens of Artemia, originating from a tetraploid parthenogenetic clone from Barkol salt lake (China), cultured in the laboratory: a, a normal specimen, with straight telson; b-d, telsons of three specimens, each with a similar anomaly in the skeleton of the telson, i.e., a distinct bend in the telson at which site a tumour-like abnormality seems to be present; b, detail of abnormal telson in pre-adult specimen; c, similar abnormality in adult specimen, showing small lumps on the tumour-like structure; d, detail of the third specimen, showing small lumps on the exoskeleton of the telson.

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    Abnormality characteristics of the offspring of the three abnormal, parthenogenetic specimens of Artemia in their F1 and F2


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