Publications by authors named "Guilherme Guidolin Galassi"
We examined four suspected cases of facultative parthenogenesis in three species of a neotropical lineage of pitvipers of the group. Reproduction without mating was observed in captive females of and housed alone for seven years (the two former species) and nine years (the latter one). In addition to the observation of captivity data, we investigated molecularly this phenomenon using heterologous microsatellites.
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- The study focused on the karyotype of Leptodactylus mystacinus from Brazil, which has a 2n = 22 karyotype similar to other species in the Leptodactylus group.
- The presence of C-banded heterochromatin was primarily at centromeres, while silver staining revealed significant variability in Ag-positive regions across specimens.
- Phylogenetic analysis showed that L. mystacinus is a basal branch, with multiple nucleolar organizer regions (NORs) on chromosomes 4 and 8 being a unique characteristic of this species.