Underground speciation: Unraveling the systematics and evolution of the highly diverse tuco-tucos (genus Ctenomys) with genomic data.

Subterranean rodents of the genus Ctenomys (tuco-tucos) are endemic to South America and have experienced relatively recent radiation. There are about 67 recognized species that originated in approximately 1-2 MY. They stand out for their species richness, extraordinary chromosomal diversity, and wide range of habitat they occupy in the continent.

Natural life cycle of (Taeniidae) in Argentina and histopathology of metacestodiasis in intermediate hosts.

Using morphological and molecular studies, the life cycle of (Cestoda: Taeniidae) was elucidated, involving subterranean rodents (Ctenomyidae) as intermediate hosts, and the lesser grison, (Mustelidae), as definitive host. Metacestodes (cysticerci and polycephalic larvae) were found mainly in the liver but also in spleen, pancreas, lungs and small intestine of 2 species of tuco-tucos ( spp.) from Chubut, Argentina.