Tadpoles
Mostrando 1-12 de 114 artigos, teses e dissertações.
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1. Toxicidade aguda (LC50) e efeitos comportamentais e morfológicos de formulado comercial com princípio ativo glifosato em girinos de Physalaemus cuvieri (Anura, Leptodactylidae) e Rhinella icterica (Anura, Bufonidae)
RESUMO O declínio de anfíbios no mundo está cada vez maior e a perda de riqueza, muitas vezes, está associada a áreas agrícolas. O uso de agrotóxicos, em especial daqueles à base de glifosato, é cada vez maior e novas formulações estão sendo desenvolvidas. O presente trabalho avaliou a toxicidade aguda de um composto comercial com o princípio at
Eng. Sanit. Ambient.. Publicado em: 20/12/2019
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2. Maximal Information Coefficient and Support Vector Regression Based Nonlinear Feature Selection and QSAR Modeling on Toxicity of Alcohol Compounds to Tadpoles of Rana temporaria
Efficient evaluation of biotoxicity of organics is of vital significance to resource utilization and environmental protection. In this study, toxicity of 110 alcohol compounds to tadpoles of Rana temporaria is adopted as the dependent variable and 1388 physiochemical parameters (features) calculated by PCLIENT are used for representing each compound. A featu
J. Braz. Chem. Soc.. Publicado em: 2019-02
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3. The agricultural impact of pesticides on Physalaemus cuvieri tadpoles (Amphibia: Anura) ascertained by comet assay
ABSTRACT Amphibians inhabiting agricultural areas are constantly exposed to large amounts of chemicals, which reach the aquatic environment during the rainy season through runoff, drainage, and leaching. We performed a comet assay on the erythrocytes of tadpoles found in the surroundings of agricultural fields (soybean and corn crops), where there is an inte
Zoologia (Curitiba). Publicado em: 23/10/2017
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4. What the largest tadpole feeds on? A detailed analysis of the diet composition of Pseudis minuta tadpoles (Hylidae, Dendropsophini)
ABSTRACT We analyzed the diet of 25 individuals of Pseudis minuta tadpoles which consisted in debris with more than 30%, follow by diatoms, euglenids, green algae, and desmids. With regard to the feeding strategy, P. minuta tadpoles are generalist consumer. The negative correlation between the abundance of items in the digestive tract and the mouth width ind
An. Acad. Bras. Ciênc.. Publicado em: 04/08/2016
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5. Locomotion and survival of two sympatric larval anurans, Bufo gargarizans (Anura: Bufonidae) and Rana zhenhaiensis (Anura: Ranidae), after partial tail loss
Tadpoles of two sympatric anurans, Bufo gargarizans Cantor, 1842 and Rana zhenhaiensis Ye, Fei & Matsui, 1995, were used as model organisms to examine the effects of different levels of tail loss on swimming performance and survival. On average, B. gargarizans tadpoles were shorter and had smaller tails and body mass than R. zhenhaiensis. After 75% tail loss
Zoologia (Curitiba). Publicado em: 2014-08
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6. The tadpole of Proceratophrys izecksohni (Amphibia: Anura: Odontophrynidae)
We describe the external morphology of the tadpole of Proceratophrys izecksohni Dias, Amaro, Carvalho-e-Silva & Rodrigues, 2013, its internal oral features, and chondrocranial anatomy, based on specimens collected at the type locality. The tadpole has short and oval body, spiracle with inner wall fused to the body, and oral formula 2/3(1). The oral cavity of
Zoologia (Curitiba). Publicado em: 2014-04
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7. Editorial
Information is presented on morphological variation in the frog, Phyllomedusa ecuatoriana, with a description ot the tadpole, vocalizations, and notes on its natural history and distribution, based on material recently collected in the Cordillera del Cóndor, Zamora Chinchipe Province, Ecuador. Phyllomedusa ecuatoriana is of médium size (male SVL length 46.
Pap. Avulsos Zool. (São Paulo). Publicado em: 2014
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8. Una especie nueva de rana arbórea del género Hyloscirtus (Amphibia: Anura: Hylidae) de la Cordillera del Cóndor
Ecuadorian frogs of genus Hyloscirtus comprises 16 described species, of which eleven belong to the H. larinopygion group. They are restricted to the flanks of the Andes, both east and west. An assessment of the herpetofauna in the southern part of Cordillera del Condor (montane forests on sandstone plateaus) province of Zamora Chinchipe, Ecuador, led to the
Pap. Avulsos Zool. (São Paulo). Publicado em: 2014
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9. Tadpoles of the High-Andean Hyloxalus subpunctatus (Anura: Dendrobatidae) with description of larval variation and species distinction by larval morphology
This study redescribes the tadpoles of Hyloxalus subpunctatus (Anura: Dendrobatidae) based on larvae from the type locality and over most of its geographic range, including all stages of ontogenetic development. I describe tadpoles in the three developmental phases: (1) back-riding tadpoles, (2) free-swimming tadpoles, (3) froglets or individuals in metamorp
Pap. Avulsos Zool. (São Paulo). Publicado em: 2013
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10. Efecto del tamaño del hábitat en la supervivencia, desarrollo y crecimiento en renacuajos de Engystomops pustulosus (Anura: Leiuperidae) y Rhinella humboldti (Anura: Bufonidae)
Tadpole survival is strongly influenced by environmental factors such as temperature, oxygen, food, larval density, water volume and pond drying. Tadpoles of Engystomops pustulosus and Rhinella humboldti develop in ephemeral habitats with strong differences in their size (space and water volume) around the city of Ibagué, Colombia, and at the campus of the
Pap. Avulsos Zool. (São Paulo). Publicado em: 2013
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11. Adults and tadpoles of species of Hylodidae (Anura): history and taxonomy perspectives
We make a historical review of the rates of descriptions of adult and larval forms of frogs of the three genera of Hylodidae: Crossodactylus Duméril & Bibron, 1841; Hylodes Fitzinger, 1826; and Megaelosia Miranda-Ribeiro, 1923. We analyze and compare the evolution of the number of descriptions of adults and tadpoles of the 42 species presently known in the
Zoologia (Curitiba). Publicado em: 2012-02
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12. Una especie nueva de rana venenosa de altura del género Excidobates (Dendrobatoidea: Dendrobatidae) de la Cordillera del Cóndor
The genus Excidobates comprises two species, E. captivus and E. mysteriosus, distributed in the Río Marañón basin in Peru. Herpetofaunal assessments in the eastern Andean montane forest in Province of Zamora Chinchipe, Ecuador, resulted in the discovery of a new species of the genus, which we describe as Excidobates condor sp. nov. We provide information
Pap. Avulsos Zool. (São Paulo). Publicado em: 2012