Girinos do grupo "Microcephala" do Estado do Rio de Janeiro (Amphibia, Anura, Hylidae)

Cruz, Carlos Alberto Gonçalves; Dias, André Gonçalves

doi:10.1590/s0101-81751990000400023

Cited by 6 publications

(6 citation statements)

References 2 publications

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“…According to Duellman (1970), in Middle America this group comprises four species: H. microcephala, H. phlebodes, H. sartori, and H. robertmertensi. In an earlier work (Duellman and Fouquette, 1968), H. nana was proposed to be related, although it was not added to the group due to lack of knowledge of the larvae. More recent studies added South American species, including H. nana, to the group (Duellman, 1972;Hero, 1990;Cruz and Dias, 1991).…”

Section: Buccal Apparatus and Buccopharyngeal Cavitymentioning

confidence: 99%

Feeding mechanisms in two treefrogs, Hyla nana and Scinax nasicus (Anura: Hylidae)

Candioti¹,

Lavilla²,

Echeverría³

2004

Journal of Morphology

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After the description of the chondrocranium, hyobranchial apparatus, associated musculature, buccal apparatus, buccopharyngeal cavity, digestive tract, and gut contents, it was possible to define the feeding modes of Scinax nasicus and Hyla nana tadpoles (Gosner Stages 31-36). Scinax nasicus larvae are "typical" microphagous tadpoles, with keratodonts and robust rostrodonts appropriate for rasping surfaces and mincing of food particles; the buccopharyngeal cavity is equipped with filtering structures and has a conspicuous glandular zone and a highly developed branchial basket. In contrast, H. nana tadpoles have a modified buccal apparatus; the reduction of the buccopharyngeal and branchial basket structures, together with the high lever-arm ratio and the great development of the depressor muscles of the buccal floor are indicative of macrophagous feeding.

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Section: Buccal Apparatus and Buccopharyngeal Cavitymentioning

confidence: 99%

Feeding mechanisms in two treefrogs, Hyla nana and Scinax nasicus (Anura: Hylidae)

Candioti¹,

Lavilla²,

Echeverría³

2004

Journal of Morphology

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“…3). Com H. elegans, compartilha também a forma geral do corpo, a coloração ventral e das coxas, mas distingue-se pelo menor tamanho (CRA de H. elegans, segundo LUTZ (1973) Os girinos, tanto os provenientes das desovas quanto os observados no local, apresentam as características das espécies do grupo de Hyla mircocephala, quais sejam, corpo alongado, flagelo terminal na cauda, ausência de dentículos córneos e de papilas na boca (DUELLMAN & FOUQUETTE 1968, CRUZ & DIAS 1991, PUGLIESE et al 2000. O girino de H. studerae sp.…”

unclassified

“…O grupo de Hyla microcephala, definido por DUELLMAN (1970), apresenta girinos de corpo alongado em vista lateral, olhos quase no meio do corpo, nadadeira dorsal começando no terço posterior do corpo, cauda marcadamente xificerca e disco oral desprovido de papilas, cristas ou fileiras de dentículos córneos (PUGLIESE et al 2000).Como a larva de H. studerae sp. nov. apresenta essas características, nós a atribuí-mos a este grupo, no qual, de acordo com CRUZ & DIAS (1991), mantemos H. bipunctata e H. meridiana.…”

unclassified

Nova espécie de Hyla Laurenti do grupo de H. microcephala Cope (Amphibia, Anura, Hylidae) do nordeste do Brasil

Carvalho-e-Silva

Izecksohn

2003

Rev. Bras. Zool.

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“…Various authors described tadpoles in their work (Peixoto, 1987;Heyer et al, 1990;Cruz and Dias, 1991;Wogel et al, 2004;Rossa-Feres and Nomura, 2006;Nascimento and Skuk, 2006;Vieira and Arzabe, 2008), however most of these studies focus exclusively on the larval phase between stages 37 and 39.…”

Section: Introductionmentioning

confidence: 99%

Morphometrics and ratio of body proportionality of tadpoles of Rhinella icterica (Anura, Bufonidae) at different developmental stages

Lima

Pederassi²

2012

Braz. J. Biol.

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The plasticity of the anurans' development is probably related to their great ecological and geographic diversity. Therefore, the understanding of environmental occupation by tadpoles is related to their morphological peculiarities. We evaluated the morphologic development of the larval phases 23, 25, 30, 37, 39 and 42 of Rhinella icterica with the aim of establishing the ratio of growth, the increase in corporal mass in relation to growth and the isometry of the corporal variables for each evaluated stage. We submitted the corporal variables to the Multivariate Allometry and the relation between these variables was evaluated using the Principal Components Analysis. We verified the isometric growth and correlation between the different variables, evaluated the growth according to the body mass and established the proportionality ratio between the corporal regions. Each corporal region evaluated presented a fixed proportionality ratio, regardless of the stage, and the size of this portion was found when its proportionality index was multiplied by the tadpole's total length. This study demonstrates that the larval phase of R. icterica presents an isometric growth with proportional development of the corporal parts regardless of the evaluated stage.Keywords: amphibian, allometry, tadpole, ratio of growth. Biometria e razão de proporcionalidade corpórea em girinos de Rhinella icterica(Anura: Bufonidae) em diferentes estágios de desenvolvimento ResumoA plasticidade do desenvolvimento dos anuros é em razão, provavelmente, da sua grande diversidade ecológica e geográfica, além de que a compreensão da ocupação do ambiente por suas larvas está relacionada às suas peculiaridades morfológicas intra e interespecíficas. Avaliamos aqui o desenvolvimento morfológico das fases larvais 23, 25, 30, 37, 39 e 42 de Rhinella icterica, objetivando estabelecer as suas razões de crescimento, o aumento da massa em relação ao crescimento e a isometria de desenvolvimento corporal para cada estágio avaliado. Para tal, submetemos as variáveis corpóreas à Alometria Multivariada, sendo o relacionamento entre essas variáveis avaliado pela análise dos Componentes Principais. Verificamos a isometria do crescimento e a correlação entre as diversas variáveis, além de avaliarmos o crescimento em função da massa corpórea e estabelecermos a razão de proporcionalidade entre as regiões corpóreas. Cada região corpórea avaliada apresentou uma razão de proporcionalidade fixa, independente do estágio, sendo o tamanho dessa região encontrada quando seu índice de proporcionalidade era multiplicado pelo comprimento total. Este estudo demonstra que a fase larvar de R. icterica apresenta crescimento isométrico com desenvolvimento proporcional das regiões corpóreas independentemente do estágio avaliado.Palavras-chave: anfíbio, alometria, girino, razão de crescimento.

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Girinos do grupo "Microcephala" do Estado do Rio de Janeiro (Amphibia, Anura, Hylidae)

Cited by 6 publications

References 2 publications

Feeding mechanisms in two treefrogs, Hyla nana and Scinax nasicus (Anura: Hylidae)

Feeding mechanisms in two treefrogs, Hyla nana and Scinax nasicus (Anura: Hylidae)

Nova espécie de Hyla Laurenti do grupo de H. microcephala Cope (Amphibia, Anura, Hylidae) do nordeste do Brasil

Morphometrics and ratio of body proportionality of tadpoles of Rhinella icterica (Anura, Bufonidae) at different developmental stages

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