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Reinaldo Jose Da Silva - One of the best experts on this subject based on the ideXlab platform.
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New record of Haplometroides intercaecalis (Digenea, Plagiorchiidae) infecting a Brazilian snake
Journal of Venomous Animals and Toxins Including Tropical Diseases, 2008Co-Authors: Reinaldo Jose Da Silva, A. F. Béda, Vanda Lúcia FerreiraAbstract:Phalotris matogrossensis (Serpentes, Colubridae) was reported as a new host for Haplometroides intercaecalis (Digenea, Plagiorchiidae). The host snake was obtained from the municipality of Anastacio, state of Mato Grosso do Sul, Brazil. One specimen of H. intercaecalis was recovered from the esophagus of the host and identified by the intercecal position of the vitellaria in the pre-acetabular region. This paper describes the second report of the occurrence of this trematode in fossorial snakes of the genus Phalotris in the state of Mato Grosso do Sul, Brazil.
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NEW SPECIES OF HAPLOMETROIDES (DIGENEA: PLAGIORCHIIDAE) FROM PHALOTRIS NASUTUS (GOMES, 1915) (Serpentes, COLUBRIDAE)
Journal of Parasitology, 2007Co-Authors: Reinaldo Jose Da Silva, Vanda Lúcia Ferreira, Christine StrüssmannAbstract:A new species of Haplometroides (Digenea, Plagiorchiidae) is described from a specimen of Phalotris nasutus (Gomes, 1915) (Serpentes, Colubridae). The host snake was obtained in the municipality of Corumba, Mato Grosso do Sul State, Brazil. Trematodes were recovered from esophagus, stomach, and small intestine of the host. The main characteristic of the new species is the vitellaria, which is intercecal, cecal, and extracecal in the preacetabular region. A key for identification of the species in Haplometroides is proposed.
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Corallus caninus (Serpentes, Boidae): a new host for Ophiotaenia sp. (Cestoda, Proteocephalidae)
Arquivo Brasileiro De Medicina Veterinaria E Zootecnia, 2006Co-Authors: Reinaldo Jose Da Silva, R. C Portela, F. J. M SantosAbstract:Relata-se a ocorrencia de Ophiotaenia sp. (Cestoda, Proteocephalidae) parasitando Corallus caninus (Serpentes, Boidae). A serpente foi recebida no Parque Zoologico de Goiânia, Goias, proveniente de apreensao pelo RAN/IBAMA em trafico de animais silvestres. O animal estava apatico, com disecdise e desidratacao. Apos alguns dias, morreu no cativeiro. A necropsia revelou a presenca de um cestodeo no intestino que foi fixado em AFA apos compressao, corado em carmim e analisado em sistema de analise de imagens. Os aspectos morfologicos indicaram ser uma especie do genero Ophiotaenia, mas nao foi possivel sua identificacao. Este e o primeiro relato sobre a ocorrencia de um cestodeo do genero Ophiotaenia parasitando C. caninus.
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Report on the occurrence of Haplometroides buccicola (Trematoda, Digenea, Plagiorchiidae) infecting Phalotris lativittatus (Serpentes, Colubridae) in Brazil
Journal of Venomous Animals and Toxins Including Tropical Diseases, 2005Co-Authors: Reinaldo Jose Da Silva, P. A. Andrade, H. A. Monteiro E Silva, M. Rossellini, T. H. BarrellaAbstract:Haplometroides buccicola (Trematoda, Digenea, Plagiorchiidae) was reported in the mouth and oesophagus of Phalotris lativittatus (Serpentes, Colubridae) from Botucatu, Sao Paulo State, Brazil. This is the first report on the occurrence of H. buccicola parasitizing P. lativittatus. The Haplometroides genus was also discussed and the most important morphological characters for the identification of the species H. buccicola and H. odhneri are presented.
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occurrence of haplometroides odhneri trematoda digenea plagiorchiidae infecting leptotyphlops koppesi Serpentes leptotyphlopidae
Arquivo Brasileiro De Medicina Veterinaria E Zootecnia, 2005Co-Authors: Reinaldo Jose Da Silva, Erica De Oliveira Penha Zica, J C Oreilly, M. De La Cruz, M C CostaAbstract:Descreveu-se a ocorrencia de Haplometroides odhneri (Trematoda, Digenea, Plagiorchiidae) na traqueia e esofago de Leptotyphlops koppesi (Serpentes, Leptotyphlopidae) proveniente da Usina Hidreletrica Corumba I, municipio de Caldas Novas, Goias. Este e o primeiro relato sobre a ocorrencia de H. odhneri parasitando L. koppesi.
Marieluise Weidinger - One of the best experts on this subject based on the ideXlab platform.
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Ultrastructure of five Euglena species positioned in the subdivision Serpentes.
Protoplasma, 2008Co-Authors: Elsa Kusel-fetzmann, Marieluise WeidingerAbstract:Within the genus Euglena, the subgroup "Serpentes" is characterised by species with long, slim cell bodies, which move without flagellum by snake-like locomotion in the detritus or in the mud, or swim freely in the water with a flagellum. Two major groups can be distinguished. The first is centred around the species Euglena satelles, with Euglena carterae, Euglena adhaerens and others, and is characterised by a straight-ended anterior part of the cell without a protruding flagellum. The second group is centred around the species Euglena deses, with its varieties, and Euglena ehrenbergii, and is characterised by a lateral canal opening at the anterior end with one flagellum protruding sideways. The representatives of the whole Serpentes group have various (15-30) large chloroplasts containing characteristic naked pyrenoids. The exception is Euglena ehrenbergii, which possesses innumerable small chloroplasts without pyrenoids. To better characterise this whole subgroup, to better taxonomically distinguish between the diverse species and to provide a basis for further molecular-genetic analysis of the phylogeny of and relationship between the Euglena species, we used transmission and scanning electron microscopy to investigate the five selected species. One important distinguishing feature among the species is the form of the pellicle. It can differ in thickness or cross-sectional shape (e.g. A-, M-or plateau-like shape) and can have various arrangements of microtubules and endoplasmic reticulum mucus vesicles. We show that the group is more heterogeneous than expected and that some species have very individual features that poorly fit into a common Serpentes group, particularly the above-mentioned Euglena ehrenbergii. Euglena carterae, formerly named Euglena deses var. carterae, with its typical straight-ended canal opening, does not fit into the Euglena deses varieties, as has already been confirmed by molecular genetic methods.
Elsa Kusel-fetzmann - One of the best experts on this subject based on the ideXlab platform.
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Ultrastructure of five Euglena species positioned in the subdivision Serpentes.
Protoplasma, 2008Co-Authors: Elsa Kusel-fetzmann, Marieluise WeidingerAbstract:Within the genus Euglena, the subgroup "Serpentes" is characterised by species with long, slim cell bodies, which move without flagellum by snake-like locomotion in the detritus or in the mud, or swim freely in the water with a flagellum. Two major groups can be distinguished. The first is centred around the species Euglena satelles, with Euglena carterae, Euglena adhaerens and others, and is characterised by a straight-ended anterior part of the cell without a protruding flagellum. The second group is centred around the species Euglena deses, with its varieties, and Euglena ehrenbergii, and is characterised by a lateral canal opening at the anterior end with one flagellum protruding sideways. The representatives of the whole Serpentes group have various (15-30) large chloroplasts containing characteristic naked pyrenoids. The exception is Euglena ehrenbergii, which possesses innumerable small chloroplasts without pyrenoids. To better characterise this whole subgroup, to better taxonomically distinguish between the diverse species and to provide a basis for further molecular-genetic analysis of the phylogeny of and relationship between the Euglena species, we used transmission and scanning electron microscopy to investigate the five selected species. One important distinguishing feature among the species is the form of the pellicle. It can differ in thickness or cross-sectional shape (e.g. A-, M-or plateau-like shape) and can have various arrangements of microtubules and endoplasmic reticulum mucus vesicles. We show that the group is more heterogeneous than expected and that some species have very individual features that poorly fit into a common Serpentes group, particularly the above-mentioned Euglena ehrenbergii. Euglena carterae, formerly named Euglena deses var. carterae, with its typical straight-ended canal opening, does not fit into the Euglena deses varieties, as has already been confirmed by molecular genetic methods.
Laurence M Hardy - One of the best experts on this subject based on the ideXlab platform.
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karyotypes of six species of colubrid snakes from the western hemisphere and the 140 million year old ancestral karyotype of Serpentes
American Museum Novitates, 2019Co-Authors: Charles J Cole, Laurence M HardyAbstract:Karyotypes are described for six species of snakes from the Western Hemisphere, and comparisons are made with all species of snakes from around the world that have been karyotyped with modern methods. Although there is significant karyotypic variation in snakes, there is one basic karyotype that is shared by members of all families of snakes, representing widely divergent lineages, extending from today back through the evolutionary history of the Serpentes. Long-term survival of the ancestral snake karyotype may be a result of canalization, similar to some ancient chromosomes of turtles.
Kunihiko Ueda - One of the best experts on this subject based on the ideXlab platform.
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morphology and chromosome number of viola pilosa and its systematic position
Taxon, 1993Co-Authors: Motoharu Okamoto, Hiroshi Okada, Kunihiko UedaAbstract:The chromosome number of Viola pilosa was counted as 2n = 20. This number as well as other characteristics such as acaulescent stoloniferous habit, adaptations to myrmecochorous dispersal and slightly uncinate styles suggest close similarity of V. pilosa and its relatives to V. ser. Viola. On the other hand, they contrast in chromosome number, fruit characters and style morphology with other species traditionally placed in V. ser. Serpentes (W. Becker) Steenis. We thus propose that V. pilosa, including the type of V. ser. Serpentes, and its relatives be transferred to V. ser. Viola. A new name is given to what is left of Becker's "Serpentes group": V. ser. Australasiaticae Okamoto.
