Gonadal atrophia caused by disseminated neoplasia in Mytilus chilensis cultured in the Beagle Channel, Argentina

CREMONTE , FLORENCIA; VÁZQUEZ, N; SILVA. M. R.

JOURNAL OF SHELLFISH RESEARCH

NATL SHELLFISHERIES ASSOC

Año: 2011 vol. 30 p. 1 - 5

0730-8000

Disseminated neoplasia in culture Mytilus chilensis (Mytilidae) from Beagle Channel (Tierra del Fuego province, Argentina) in the South Atlantic coast has been detected for the first time. The disease is characterized by the infiltration of neoplastic cells with enlarged nucleus and a high nucleus to cytoplasm ratio. All specimens with disseminated neoplasia were females, exhibiting gonadal atrophy in advanced stages of the disease. The high prevalence reported (13.3%) indicates an epizootic level.