Here, i describe the histomorphological changes during gonadal differentiation in the snouted treefrog. Canal6 editora, the second edition in 2014 is digital and in english. Dec 01, 2008 we investigated calling behavior and call structure for eight species of treefrogs in the genus scinax, and document noteworthy patterns of interspecific variation that largely reflect habitat and social environment in this report. I sexed and measured a total of 302 tadpoles between gosner stages 2646 and 21 juvenile and adults. Gonadal differentiation and development in the snouted treefrog. Biochemical biomarkers in scinax fuscovarius tadpoles exposed. Media in category scinax fuscovarius the following 12 files are in this category, out of 12 total. Pages in category scinax stubs the following 81 pages are in this category, out of 81 total.
Visceral pigmentation in three species of the genus scinax. The objective of this work were to analyze the effect of predation by odonata naiads on two amphibian species with distinct habits benthic and midwater and to verify whether the presence and architecture of macrophytes can mediate this interaction. Scinax is a genus of frogs snouted treefrogs in the family hylidae found in eastern and southern mexico to argentina and uruguay, trinidad and tobago, and saint lucia. Pdf esterase inhibition in tadpoles of scinax fuscovarius. Dec 31, 2014 biotic processes, such as predation and parasitism events, are crucial for answering questions in ecology and evolution. Four lentic water bodies were sampled twice a month december 2012 to march 20.
Eye malformation baseline in scinax fuscovarius larvae. Scinax fuscovarius least concern downloaded on 16 april 2008. High species richness of scinax treefrogs hylidae in a. Review history for comparative description and ossification. Comparative analysis based on replication banding reveals the mechanism responsible. Pdf comparative analysis based on replication banding. Here, i describe the histomorphological changes during gonadal differentiation in the snouted treefrog scinax fuscovarius. Despite the high number of potential new species of scinax revealed in recent studies, the rate of species descriptions for amazonia has been low in the last decade. The results show that 1 the species possesses the undifferentiated type of gonadal. It is similar to scinax fuscovarius but differs in call characteristics.
The new species is diagnosed by medium body size, snout truncate in dorsal view, ulnar and tarsal tubercles absent, nuptial pads poorly developed, skin on dorsum shagreen, dorsum light brown with dark brown spots and markings, white groin with. Pdf predation of scinax fuscovarius by leptodactylus. This treefrog hylidae is widely distributed in open. Effect of the spatial heterogeneity on the predation of. Predation of scinax fuscovarius by leptodactylus latrans.
Scinax species are still underrepresented in cytogenetic studies, mainly with respect to populations from northeastern and northern brazil. Biochemical biomarkers in scinax fuscovarius tadpoles exposed to a commercial formulation of the. Nucleolus organizer regions in ololygon obtriangulata a, b, c and scinax fuscovarius d, e, f identified by a, d silver impregnation b, e cma 3 staining, and c, f. It is found in argentina, bolivia, brazil, paraguay, and uruguay. Scinax fuscovarius were found in areas presenting high anthropogenic impact, such as urban areas close to gardens and residences. Download pdf get permissions abstractexcerpt full text pdf supplementary materials cited by. The name originates from the greek word skinos, meaning quick or nimble. About 87 % of the anuran species that occur in brazil possess a larval stage, i. The new species is diagnosed by snoutvent length 20. All structured data from the file and property namespaces is available under the creative commons cc0 license. Effect of the spatial heterogeneity on the predation of scinax fuscovarius and physalaemus cuvieri tadpoles by odonata larvae efeito da heterogeneidade ambiental na.
Throughout this stage of development, tadpoles are subject to predation and the conditions of their aquatic habitat, including environmental heterogeneity, physical and chemical properties of the water, and hydroperiod of the water body. The species occurs throughout urban, periurban, and open nonforested lands of southeastern brazil, northern argentina, paraguay, and bolivia frost, 2014, in close association with the gran chaco extension. Body size variation and sexual size dimorphism across. Histological characterization of cellular types during scinax fuscovarius. Genotoxic evaluation in tadpoles associated with agriculture. These species presents wide seasonal occurrence and are ecological generalists.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Scinax castroviejoi is a species of frog in the family hylidae. Its natural habitats are moist savanna, subtropical or tropical moist shrubland, subtropical or tropical highaltitude shrubland, subtropical or tropical dry lowland grassland, subtropical or tropical seasonally wet or flooded lowland grassland, intermittent freshwater. Variation in call structure and calling behavior in treefrogs. The aim of this paper is to report 10 predation events of anuran amphibians by giant water bugs of the genus lethocerus in different localities in northeastern argentina. Pode ser encontrada na venezuela, guiana, suriname, brasil e. This paper describes morphological characteristics of the ovarian germinative cells of the scinax fuscovarius lutz, 1925. Here, we report predation and ectoparasitism events of invertebrates upon tadpoles in aquatic habitats of southern brazil. Sep 01, 2015 the snouted treefrog scinax fuscovarius is a member of the family hylidae, currently placed in the scinax ruber group faivovich et al. Hylidae by two invertebrates in southeastern brazil. It is found in valleys of the eastern andes in southern bolivia, and controversially, in argentina. Those water bodies were located in the diamante do norte, county.
We gathered the available information about the anurofauna in brazilian sand coastal plains restingas published since the 1966, which is the date of the first study we found that was conducted exclusively about anurans in these ecosystems. Parasitism by larval tapeworms genus spirometra in south. Urbanization increases the density of the human population, which results in the destruction of natural environments. We conclude that this interaction is of extremely importance in the. Pdf on jan 1, 2010, vitor azarias campos and others published scinax fuscovarius snouted treefrog. Many agricultural practices cause environmental degradation that affects the cellular integrity of anurans. Scinax fuscovarius is part of wikiproject amphibians and reptiles, an attempt at creating a standardized, informative, comprehensive and easytouse amphibians and reptiles resource.
Diets of tadpoles from a temporary pond in southeastern. Anuran larvae as prey and hosts of invertebrates in. Four helminth species of cosmocercid nematodes were found. Amphibians of rio claro farm by fabio maffei and flavio ubaid 2014. With the exception of scinax fuscovarius and physalaemus biligonigerus, they are all new records of adult anurans being prey to these invertebrates. The conservation of water across evaporative gradients is both a more comprehensive explanation and a more pervasive driver of spatial clines in body size among terrestrial amphibians than is the balance of heat alone. Tadpoles were fixed in toto in 10 % neutral formalin and staged according to gosner 1960. We describe a new small species of scinax from the rain forests on the interfluve between purus and madeira rivers, brazilian amazonia. In this study, we provide new chromosomal information on scinax boesemani, s. Oct 01, 20 read biochemical biomarkers in scinax fuscovarius tadpoles exposed to a commercial formulation of the pesticide fipronil, marine environmental research on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Scinax fuscovarius amphibia, anura, hylidae gonadal differentiation and development in the snouted treefrog, scinax fuscovarius. The ovary is organized in primordial germinative cells oogonia and follicular structures ovarian.
Histological characterization of cellular types during. Pdf gonadal differentiation and development in the. Scinax wagler, 1830 is a speciesrich genus of amphibians with relatively few detailed chromosomal reports. The genus scinax currently includes more than 120 species, recovered in two major clades, the s. Pdf effect of the spatial heterogeneity on the predation. Biochemical biomarkers in scinax fuscovarius tadpoles. Diet of the colubrid snake, thamnodynastes strigatus. Pdf predation on scinax fuscovarius anura, hylidae by. In this work, cytogenetic analyses of scinax auratus wiedneuwied, 1821 and scinax eurydice bokermann, 1968 were carried out based on conventional. Individuals were taken to the laboratory where they. The genus scinax is one of the most specious genera of treefrogs of the family hylidae. Histological characterization of cellular types during scinax.
Lutz, 1925 larvae with eye malformations that were found among individuals sampled in the region of sao jose do rio preto, sao paulo, brazil fig. Geographical clines of body size in terrestrial amphibians. Species of cosmocerca nematoda, cosmocercidae in anurans. Pages in category scinax the following 92 pages are in this category, out of 92 total. The species occurs throughout urban, periurban, and open nonforested lands of southeastern brazil, northern argentina, paraguay, and bolivia frost, 2014, in close. Diet of the colubrid snake, thamnodynastes strigatus gunther. Pdf histological characterization of cellular types during. Parasitism by larval tapeworms genus spirometra in south american. Here we report on two records of predation of this species by two arthropods. Gosners developmental stages ranged from 31 to 38, except for scinax fuscovarius stage 25 in october. Cytogenetic analysis of scinax auratus and scinax eurydice anura, hylidae. Scinax fuscovarius lutz, 1925 is one of the most common frogs in south america, and is often found in anthropized environments.
In total, 248 sympatric anurans belonging to 4 speciesleptodactylus latrans, rhinella icterica, physalaemus cuvieri, and scinax fuscovariuswere captured in campo belo do sul, santa catarina, brazil, from may 2009 to january 2011, and examined for helminth parasites. Esterase inhibition in tadpoles of scinax fuscovarius anura. A potential cause of this low rate may be the existence of morphologically cryptic species. In tps, scinax fuscovarius was the most frequent species in tps ponds, occurring in all studied ponds, but this species was also registered in pp. Guira cuckoo guira guira gmelin 1788 is a member of the family cuculidae with a wide distribution, being found in argentina, brazil, bolivia. Scinax fuscovarius tadpoles were found in october and january, those of s.
The snouted treefrog scinax fuscovarius is a member of the family hylidae, currently placed in the scinax ruber group faivovich et al. Scinax fuscovarius rio claro farm, maffei and ubaid 2014. Physalaemus cuvieri and scinax fuscovarius are ground dwellers or call at the water level. Reproductive patterns of trachycephalus venulosus laurenti, 1768 and scinax fuscovarius lutz, 1925 from the cerrado, central brazil. If you would like to participate, you can choose to edit this article, or visit the project page for more information. Gonadal differentiation and development in the snouted treefrog, scinax fuscovarius amphibia, anura, hylidae article pdf available in journal of herpetology 492. A new tree frog species of the genus scinax from the interfluve between the purus and madeira rivers, brazilian amazonia, is described and illustrated. Accurate descriptions of gonadogenesis are necessary to have a baseline to detect abnormalities during development and to assess the time a species may be more vulnerable to the action of pesticides, endocrine disruptors, and pharmaceuticals to which abnormal conditions have been attributed. Cytogenetic analysis of scinax auratus and scinax eurydice. Environmental drivers of tadpole community structure in. New records of anuran predation by giant water bugs of the. Comparative analysis based on replication banding reveals. These are small to moderatesized tree frogs, drably colored. The in situ data showed no significant variation in the micronucleus frequency between the sites.
Aug 14, 2012 this page was last edited on 9 july 2018, at 15. Scinax fuscovarius is a species of frog in the family hylidae. In the present study, we provided in situ data of dendropsophus minutus, physalaemus cuvieri, and scinax fuscovarius collected in soybeancorn and conservation units in the brazilian cerrado. Abstract amphibians share with other ectothermic vertebrates an extracutaneous pigmentary system consisting of melanin. This treefrog hylidae is widely distributed in open habitats of south america, being very common in agricultural and urban areas where it breeds in both. Esterase inhibition in tadpoles of scinax fuscovarius anura, hylidae as a biomarker for exposure to organophosphate pesticides. Farmland and natural areas are converted into commercial, industrial, and residential areas e. Species of cosmocerca nematoda, cosmocercidae in anurans from southern santa catarina state, brazil. This page was last edited on 23 august 2017, at 14. A new species of scinax from the purusmadeira interfluve, brazilian. A new species of amazonian snouted treefrog hylidae. Files are available under licenses specified on their description page.
Apr 10, 2010 in this work, we characterized the activities of ache, bche and cbe in tadpoles of the snouted treefrog scinax fuscovarius, and verified their in vitro sensibility to different inhibitors phenylmethane sulfonyl fluoride pmsf, tetraisopropylpyrophosphamide isoompa and the op diazinon. Comparative testis morphology of neotropical anurans. Their predominance in the study area suggests an advanced degree of. Histological characterization of cellular types during scinax fuscovarius oogenesis lutz anura, hylidae. Pdf histological characterization of cellular types. Cytogenetic studies in six species of scinax anura. Biochemical biomarkers in scinax fuscovarius tadpoles exposed to a commercial formulation of the pesticide fipronil. Gonadal differentiation and development in the snouted. Deredation of scinax fuscovarius por scolopendra sp. Pdf reproductive patterns of trachycephalus venulosus. The ovary is organized in primordial germinative cells oogonia and follicular structures ovarian follicle oocytes surrounded by follicular cells. A new species of scinax from the purusmadeira interfluve.
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