Nothobachia ablephara, a new microteiid genus characterized by an extremely elongated body with r... more Nothobachia ablephara, a new microteiid genus characterized by an extremely elongated body with reduced limbs, and by the absence of eyelids and of an ext ernal ear opening, is described based on a male from sao Raimundo Nonato, Piaui, in north eastern Brasil. The paratype, a female and only other specimen known , was obtained in a backyard at Petrolina, Pernambuco.. Nothobachia, gen. nov. Definicao Microteiideo caracterizado pela ausen cia de 'palpebra e de ouvido externo. Corpo extremamentealongado, sem constriccoes marcad as seja no pescoco, seja na base da cauda, esta mais curta que 0 comprimento rostro-anal. Poros preanais no macho. Poros femora is ausentes. Tipo do genero: Nothobachia ablephara, sp. n.
Cytogenetic investigations using differential staining (C-, replication R-banding and Ag-NOR stai... more Cytogenetic investigations using differential staining (C-, replication R-banding and Ag-NOR staining) were performed in the two known species of the microteiid lizards of the genus Micrablepharus: M. maximiliani and M. atticolus. M. atticolus showed diploid number variation (2n = 50, 51, 52, 53) due to a system of supernumerary chromosomes which presented late replication patterns and differences in morphology (metacentric
Page 1. December 1996] HERPETOLOGICA 535 ICNMHN 16700, 17242 (AA), 17540; H. bergeri: KU 162258 (... more Page 1. December 1996] HERPETOLOGICA 535 ICNMHN 16700, 17242 (AA), 17540; H. bergeri: KU 162258 (A); H. chirripoi: UVC 8249; H. colymbi-phyllum: 10585-88, 15992, 15998; H. eurygnatha: KU 93225 (A); H. fleischmanni: KU 65189-200, 68640 ...
Phenotypic variation among populations, as seen in the signaling traits of many species, provides... more Phenotypic variation among populations, as seen in the signaling traits of many species, provides an opportunity to test whether similar factors generate shared phenotypic patterns in different parts of a species’ range. We investigate whether genetic divergence, abiotic gradients, and sympatry with closely related species explain variation in the dewlap colors of slender anoles,Anolis fuscoauratus. To this aim, we characterized dewlap diversity in the field, inferred population genetic structure and evolutionary relationships, assessed whether dewlap morphs are associated with climate and landscape variables, and tested for non-random associations in the distribution ofA. fuscoauratusmorphs and sympatricAnolisspecies. We found that dewlap colors vary among but not within sites inA. fuscoauratus. Regional genetic clusters included multiple morphs, while populations with similar dewlaps were often distantly related. Morphs did not segregate in environmental space, suggesting that dew...
FIGURE 1. Cnemidophorus nigrigula from Santo Inácio, Bahia state, Brazil. A) Dorsal view of an ad... more FIGURE 1. Cnemidophorus nigrigula from Santo Inácio, Bahia state, Brazil. A) Dorsal view of an adult male. B) Ventral view of an adult male. Photo: Miguel Rodrigues.
FIGURE 5. Photo in life of Cnemidophorus nigrigula, showing color variation in males. A) Juvenile... more FIGURE 5. Photo in life of Cnemidophorus nigrigula, showing color variation in males. A) Juvenile. B) Sub adult. C) Adult.
Nothobachia ablephara, a new microteiid genus characterized by an extremely elongated body with r... more Nothobachia ablephara, a new microteiid genus characterized by an extremely elongated body with reduced limbs, and by the absence of eyelids and of an ext ernal ear opening, is described based on a male from sao Raimundo Nonato, Piaui, in north eastern Brasil. The paratype, a female and only other specimen known , was obtained in a backyard at Petrolina, Pernambuco.. Nothobachia, gen. nov. Definicao Microteiideo caracterizado pela ausen cia de 'palpebra e de ouvido externo. Corpo extremamentealongado, sem constriccoes marcad as seja no pescoco, seja na base da cauda, esta mais curta que 0 comprimento rostro-anal. Poros preanais no macho. Poros femora is ausentes. Tipo do genero: Nothobachia ablephara, sp. n.
Cytogenetic investigations using differential staining (C-, replication R-banding and Ag-NOR stai... more Cytogenetic investigations using differential staining (C-, replication R-banding and Ag-NOR staining) were performed in the two known species of the microteiid lizards of the genus Micrablepharus: M. maximiliani and M. atticolus. M. atticolus showed diploid number variation (2n = 50, 51, 52, 53) due to a system of supernumerary chromosomes which presented late replication patterns and differences in morphology (metacentric
Page 1. December 1996] HERPETOLOGICA 535 ICNMHN 16700, 17242 (AA), 17540; H. bergeri: KU 162258 (... more Page 1. December 1996] HERPETOLOGICA 535 ICNMHN 16700, 17242 (AA), 17540; H. bergeri: KU 162258 (A); H. chirripoi: UVC 8249; H. colymbi-phyllum: 10585-88, 15992, 15998; H. eurygnatha: KU 93225 (A); H. fleischmanni: KU 65189-200, 68640 ...
Phenotypic variation among populations, as seen in the signaling traits of many species, provides... more Phenotypic variation among populations, as seen in the signaling traits of many species, provides an opportunity to test whether similar factors generate shared phenotypic patterns in different parts of a species’ range. We investigate whether genetic divergence, abiotic gradients, and sympatry with closely related species explain variation in the dewlap colors of slender anoles,Anolis fuscoauratus. To this aim, we characterized dewlap diversity in the field, inferred population genetic structure and evolutionary relationships, assessed whether dewlap morphs are associated with climate and landscape variables, and tested for non-random associations in the distribution ofA. fuscoauratusmorphs and sympatricAnolisspecies. We found that dewlap colors vary among but not within sites inA. fuscoauratus. Regional genetic clusters included multiple morphs, while populations with similar dewlaps were often distantly related. Morphs did not segregate in environmental space, suggesting that dew...
FIGURE 1. Cnemidophorus nigrigula from Santo Inácio, Bahia state, Brazil. A) Dorsal view of an ad... more FIGURE 1. Cnemidophorus nigrigula from Santo Inácio, Bahia state, Brazil. A) Dorsal view of an adult male. B) Ventral view of an adult male. Photo: Miguel Rodrigues.
FIGURE 5. Photo in life of Cnemidophorus nigrigula, showing color variation in males. A) Juvenile... more FIGURE 5. Photo in life of Cnemidophorus nigrigula, showing color variation in males. A) Juvenile. B) Sub adult. C) Adult.
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Papers by Miguel Trefaut Rodrigues