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Notas sobre preda??o em uma taxocenose de anfíbios anuros no sudeste do Brasil
Pombal Jr, José P.;
Revista Brasileira de Zoologia , 2007, DOI: 10.1590/S0101-81752007000300034
Abstract: anuran amphibians are preyer by all vertebrate groups and several invertebrates. however, predation studies on amphibians are still occasional and anecdotic. herein, informations on predation of an anuran assemblage of southeastern brazil are provided. invertebrates (spiders and water bugs), the frog leptodactylus cf. ocellatus, and five snake species (four colubridae and one viperidae) preyer on small individuals or small anuran species.
Hemipenes of the long-tailed rattlesnakes (Serpentes: Viperidae) from Mexico
Robert C. Jadin,Jacobo Reyes Velasco,Eric N. Smith
Phyllomedusa : Journal of Herpetology , 2010,
Abstract: Herein, we describe and compare the morphologies of the hemipenes of the three longtailed rattlesnakes to ascertain whether the uniquefeatures of the copulatory organ of Crotalus stejnegeri are shared with the other two species and whether there are additional hemipenial characters that further distinguish the three taxa.
Aspectos ecológicos e epidemiológicos de acidentes ofídicos em comunidades ribeirinhas do baixo rio Purus, Amazonas, Brasil
Waldez, Fabiano;Vogt, Richard C.;
Acta Amazonica , 2009, DOI: 10.1590/S0044-59672009000300025
Abstract: snakebites were registered in 10 riverside communities of the lower purus river through interviews with the victims. local inhabitants answered questions about their perception on ecological aspects of snakes species involved in snakebites. snake size and bite height on the victim body were estimated with measuring tape. correspondence of local names and scientific species were obtained by using descriptions and images of the snakes. additional data on the number of families with snakebites victims were obtained from social-economic surveys for other 17 communities in the piaga?u purus reserve. eighteen people and 28 snakebites events were registered in five communities. the number of victims per community was not related to population's size. the number of families with victims was higher in larger communities (r2= 0.444; p= 0.003). approximately 88% of snakebites were inflicted on the lower limbs of the victims. there was no relationship between estimated snake's size and the height of the bite. most snakebites occurred at daytime (82.14%), and during the high rive period (64.28%) that coincides with the extraction of brazil nut and timber by the local people when they spend more time in the forest. only one death due to snakebite was registered. the species bothrops atrox was responsible for most of the accidents in the region. snake's identification by local people revealed various synonymies, with 20 local names attributed to 33 species. in their perception, b. atrox and lachesis muta were the most dangerous species and differ in attack behavior.
Occurrence of Haplometroides odhneri (Trematoda, Digenea, Plagiorchiidae) infecting Leptotyphlops koppesi (Serpentes, Leptotyphlopidae)
Silva, R.J.;Zica, E.O.P.;Cruz, M.;O'Reilly, J.C.;Costa, M.C.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2005, DOI: 10.1590/S0102-09352005000800021
Abstract: descreveu-se a ocorrência de haplometroides odhneri (trematoda, digenea, plagiorchiidae) na traquéia e es?fago de leptotyphlops koppesi (serpentes, leptotyphlopidae) proveniente da usina hidrelétrica corumbá i, município de caldas novas, goiás. este é o primeiro relato sobre a ocorrência de h. odhneri parasitando l. koppesi.
Check list of snakes from the Brejos de Altitude of Paraíba and Pernambuco, Brazil
Pereira Filho, Gentil Alves;Montingelli, Giovanna Gondim;
Biota Neotropica , 2011, DOI: 10.1590/S1676-06032011000300011
Abstract: the atlantic forest is one of the priority areas for conservation in the world, since exhibits an overwhelming biodiversity of species. among this biome stands the biogeographic unit located north of san francisco river, which extends from the state of alagoas to rio grande do norte. on this portion of atlantic forest some isolated fragments of humid forests can be found, inserted in the arid caatinga, known as brejos de altitude or brejos nordestinos. there is a total of 43 brejos distributed in the states of ceará, rio grande do norte, paraíba and pernambuco and with the exception of some humid enclaves in the state of ceará, the snake fauna of these areas are poorly known. thus, our aim is to evaluate the current status of the snakes that inhabited these areas present on paraíba and pernambuco states, furnishing a preliminary list of the species housed on two representative collections concerning this region, museu de zoologia da universidade de s?o paulo (mzusp) and universidade federal da paraíba (ufpb). as a result, we recorded 27 species of snakes showing that this composition includes species primarily distributed in forest and open areas and also species widely distributed in different kind of biomes. we also stated that due to the present deforestation and the use of these areas for agricultural purposes the knowledge of its biodiversity is imperative, especially to generate information that will enable future management and conservation plans for these areas.
The contribution of Andreas Mayer for the natural history of the State of Paraná, Brazil: V. Reptiles: relevant addenda and corrigenda
Bérnils, Renato Silveira;Moura-Leite, Julio Cesar de;
Brazilian Archives of Biology and Technology , 2010, DOI: 10.1590/S1516-89132010000200023
Abstract: a study about the herpetological legacy of the german naturalist andreas mayer (1907-1986) (bérnils & moura-leite, 1990) raised 83 specimens from 20 reptile species captured in the brazilian states of paraná and mato grosso do sul (years 40, 50, and 60) and currently housed at the museu de história natural cap?o da imbuia (curitiba). just in mayer's birth centenary, 15 more snakes collected by him and not presented in the former publication were founded. this material is relevant because (1) came from areas currently under human-altered environments; (2) was collected in areas that were poorly sampled at that time; and (3) embraced some species hard to find in paraná, including the first occurrence of phimophis cf. guerini for the state. label data for the added snakes and some important corrections to the former article, with taxonomic and geographic updates, are being presented.
Redescription of Atractus albuquerquei (Serpentes: Colubridae: Dipsadinae), with comments on geographical distribution and intraspecific variation
Zaher, Hussam;Souza, Ivan;Gower, David J.;Hingst-Zaher, Erika;Silva Jr, Nelson Jorge da;
Papéis Avulsos de Zoologia (S?o Paulo) , 2005, DOI: 10.1590/S0031-10492005000200001
Abstract: atractus albuquerquei cunha and nascimento, 1983 was previously known from a holotype from eastern pará, and 15 specimens from rond?nia and acre, all in brazil. we report on 23 additional specimens from the brazilian states of rond?nia, goiás, mato grosso, and mato grosso do sul. these specimens extend the known range of a. albuquerquei substantially, and beyond the southern limits of the amazon basin. the holotype of a. albuquerquei is redescribed and intraspecific variation in external morphology, hemipenes, and colour is documented. sexual dimorphism exists in total length, and number of ventral (significantly greater in females) and subcaudal scales (greater in males). there is a significant correlation between number of subcaudal scales and longitude (decreasing from east to west) for both males and females.
Herpetofauna of the quaternary sand dunes of the middle Rio S?o Francisco: Bahia: Brazil. VII.: Typhlops amoipira sp. nov., a possible relative of Typhlops yonenagae (Serpentes, Typhlopidae)
Rodrigues, Miguel Trefaut;Juncá, Flora Acun?;
Papéis Avulsos de Zoologia (S?o Paulo) , 2002, DOI: 10.1590/S0031-10492002001300001
Abstract: a new species of a small typhlopid snake is described from ibiraba, in the sand- dune area of the left bank of rio s?o francisco, state of bahia, brazil. typhlops amoipira sp. nov. is a small, light brown, and slightly pigmented typhlops characterized by an incomplete nasal suture,18 scale rows around the body (sab), and 212-242 dorsal scales. the geographic and morphologically closer species, typhlops yonenagae (18 sab, 259-291 dorsals) lives in the same area, in the sands of the opposite side of the river.
Morfologia e histoquímica das glandulas de Duvernoy e supralabial de seis espécies de colubrídeos opistoglifodontes (serpentes, Colubridae)
Serapicos, Eliana de Oliveira;Merusse, José Luiz Bernardino;
Papéis Avulsos de Zoologia (S?o Paulo) , 2006, DOI: 10.1590/S0031-10492006001500001
Abstract: since some colubrids can cause human envenomation, the importance of studies relating biological mechanisms to their venom apparatus is crucial. the present work dealt with morphological and histochemical characteristics of duvernoy's gland of six opisthoglyphous colubrid species. the duvernoy's gland of most species presented characteristics of a seromucous gland, except that of oxyrhopus guibei, which did not show positive reaction to proteins indicating a mucoserous feature. we found variation in the quantity of serous cells among the species. this variation may be related to the presence of substances rich in carbohydrate-protein complex, and consequently to the toxic function of the secretion.
Diet of the colubrid snake, Thamnodynastes strigatus (Günther, 1858) from Paraná State, Brazil, with field notes on anuran predation
Revista Brasileira de Biologia , 2000, DOI: 10.1590/S0034-71082000000400022
Abstract: dissection of 44 specimens of the colubrid snake thamnodynastes strigatus (serpentes: colubridae) provided data on food habits. prey items include frogs (71.4% of the sample), rodents (14.3%), fishes (10.7%), and lizards (3.6%). the most of the anuran species recorded (bufo sp., leptodactylus sp., physalaemus cuvieri and scinax fuscovarius) are ground dwellers or call at the water level. field observations provided information on the feeding behavior.
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