13 documents found, page 1 of 2
Molecular screening of Plasmodium (Haemosporidia: Plasmodiidae) parasites from ...
Harris, D. James; Santos, Joana L.; Borges-Nojosa, Diva Maria; Castro, Déborah Praciano deHemosporidians are a monophyletic group of protozoan parasites infecting all terrestrial vertebrate orders. Although Plasmodium is the most studied genus within the Haemosporidia, this research effort is heavily biased toward mammal and bird hosts. We screened 205 specimens of at least 18 reptile species from Brazil using a partial mitochondrial cytochrome b gene marker. Positive samples were sequenced and incl...
A new species of Hepatozoon Miller, 1908 (Apicomplexa: Adelerina) from the snak...
Nojosa, Diva M. Borges; Leite, M. Juliana Borges; Maia, João P.; Silva, Djan Zanchi; Braga, Roberta da Rocha; Harris, D. JamesBased on both unique morphological characteristics of the gamont, distinct changes caused to the host erythrocyte and analysis of partial 18S rRNA gene sequences, a new parasite of the genus Hepatozoon Miller, 1908 is described from the snake Philodryas nattereri Steindachner (Squamata: Dipsadidae) in northeastern Brazil. The new species, Hepatozoon musa n. sp., is characterized by large and curved mature gamon...
Review of the leaf-litter skinks (Scincidae: Panaspis) from the Gulf of Guinea ...
Soares, Leonor B.; Ceríaco, Luis M. P.; Marques, Mariana P.; Bastos-Silveira, Cristiane; Scheinberg, Lauren A.; Harris, D. James; Brehm, AntónioLeaf-litter skinks of the genus Panaspis are currently represented in the oceanic islands of the Gulf of Guinea by two species, Panaspis africana and P. annobonensis. Here we describe a third species, Panaspis thomensis sp. nov., endemic to São Tomé Island. Data from previous studies and a new phylogenetic analysis using the mitochondrial 16S gene shows that the new species is genetically divergent and reciproc...
Adding Acanthodactylus beershebensis to the mtDNA phylogeny of the Acanthodacty...
Carretero, Miguel A.; Fonseca, Miguel M.; García-Muñoz, Enrique; Harris, D. James; Brito, José C.The phylogenetic affinities of Acanthodactylus beershebensis, a highly endangered lacertid lizard endemic to the Neguev (Israel), were assessed using mtDNA markers. Fragments of 12S and 16S rRNA were analysed and compared with already published sequences of Acanthodactylus. Results corroborate the taxonomic placement of A. beershebensis as a member of the A. pardalis group but place it within a polytomy at the ...
Phylogenetic relationships of African green snakes (genera Philothamnus and Hap...
Jesus, José; Nágy, Zoltan T.; Branch, William R.; Wink, Michael; Brehm, António; Harris, D. JamesMitochondrial sequences (16S rRNA and cytochrome b) of the colubrine snake genera Philothamnus and Hapsidophrys were analysed. Samples were obtained from three volcanic islands in the Gulf of Guinea. The main objective was to infer phylogenetic relationships between the taxa and to trace back the colonization patterns of the group. Both insular species, Philothamnus girardi and Philothamnus thomensis, form a mo...
Relationships of Afroablepharus Greer, 1974 skinks from the Gulf of Guinea isla...
Jesus, José; Harris, D. James; Brehm, AntónioPartial sequences of three mitochondrial DNA genes, 12S rDNA, 16S rDNA and cytochrome b, and one nuclear gene, c-mos, were used to assess the phylogenetic relationships of species belonging to the genus Afroablepharus from the volcanic islands of the Gulf of Guinea (West Africa) and neighboring continental Africa. Additionally, partial sequences of cytochrome b were used to compare levels of sequence divergence...
Phylogenetic relationships of Lygodactylus geckos from the Gulf of Guinea islan...
Jesus, José; Brehm, António; Harris, D. JamesMitochondrial DNA (12S rRNA, 16S rRNA and cytochrome b) sequences and nuclear sequences (C-mos) were analysed within Lygodactylus thomensis from three volcanic islands in the Gulf of Guinea that have never been connected to the continent. Our aim was to assess interrelationships between the three subspecies to test a recent hypothesis suggesting high rates of mitochondrial DNA (mtDNA) sequence evolution in geck...
Phylogeography of Mabuya maculilabris (Reptilia) from São Tomé Island (Gulf of ...
Jesus, José; Harris, D. James; Brehm, AntónioThe pattern of genetic variation of the lizard Mabuya maculilabris from São Tomé Island (Gulf of Guinea) was investigated using a combination of three mitochondrial DNA gene fragments. Forty-eight haplotypes were recovered among 66 individuals covering the whole island. The genealogy inferred from the most parsimonious network of haplotypes allows us to detect two main and long branches departing from the putat...
Relationships of scincid lizards (Mabuya spp.) from the islands of the Gulf of ...
Jesus, José; Brehm, António; Harris, D. JamesRelationships of Mabuya lizards from the islands of the Gulf of Guinea where estimated using partial 12S rRNA, 16S rRNA and cytochrome b mitochondrial gene sequences. Mabuya maculilabris from São Tomé and Principe are discreet monophyletic units, highly divergent from each other and from mainland populations, indicating M. maculilabris may be a species complex. Mabuya affinis from Principe is similarly distinct...
Phylogenetic relationships of Hemidactylus geckos from the Gulf of Guinea islan...
Jesus, José; Brehm, António; Harris, D. JamesMitochondrial DNA (12S rRNA, 16S rRNA, and cytochrome b) sequences and nuclear sequences (C-mos and alpha-Enolase) were analyzed within all known Hemidactylus species from all three volcanic islands in the Gulf of Guinea that have never been connected to the continent. These comprise both endemic and widespread species. Our aim was to determine if the widespread species was introduced anthropogenically, to dete...