Análise das divergências morfológicas de Hyla bipunctata Spix em duas populações do Rio de Janeiro e Espírito Santo, Brasil (Amphibia, Anura, Hylidae)

Dias, André Gonçalves; Cruz, Carlos Alberto Gonçalves

doi:10.1590/s0101-81751993000300010

Cited by 4 publications

(3 citation statements)

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“…Carvalho e Silva and Carvalho e Silva (1994) studying the same species at the Tijuca mountains in Rio de Janeiro (approximately 100 km from Ilha Grande), found a mean number of 600 eggs per clutch and a mean egg diameter of 1.4 mm (sample sizes are not specified by the authors), values higher than those we found at Ilha Grande (394 eggs/clutch and 1.1 ± 0.1 mm, respectively). Dias and Cruz (1993) found interpopulational variation in female body size between two populations of Hyla bipunctata, with mean female body size varying from 23.1 to 30.2 mm. For S. trapicheiroi, differences in female body sizes among populations might also occur, but Carvalho e Silva and Carvalho e Silva (1994) do not give mean female body size for the population of theTijuca mountains.…”

Section: Discussionmentioning

confidence: 89%

Breeding ecology of Scinax trapicheiroi (Anura, Hylidae) at a creek in the Atlantic Rainforest of Ilha Grande, southeastern Brazil

Borges¹,

Sluys²,

Rico³

et al. 2004

Amphib Reptilia

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We analyzed the breeding biology in a population of the hylid Scinax trapicheiroi and evaluated how some environmental and structural factors affect the temporal and spatial distribution of the clutches. Fieldwork was carried out at a small stream running inside the Atlantic Rainforest at Ilha Grande, an island in Rio de Janeiro State, southeastern Brazil, from October 2000 to September 2001. Breeding occurred all year round, but the presence of females and clutches was affected by rain from the previous days. Clutches had an aggregate distribution, because they were mainly laid on lentic waters (with slow water flow). Rain affected the availability, stability and size of ponds. The high numbers of eggs per clutch, and the fast development of eggs and larvae are influenced by an unpredictable environment.

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Section: Discussionmentioning

confidence: 89%

Breeding ecology of Scinax trapicheiroi (Anura, Hylidae) at a creek in the Atlantic Rainforest of Ilha Grande, southeastern Brazil

Borges¹,

Sluys²,

Rico³

et al. 2004

Amphib Reptilia

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“…Individuals of the species P. cristiceps were seen to have a series of variations beyond those normally recognized (such as general color pattern), and we therefore considered the morphological divergence of the coloration patterns in populations as being due to environmental or genetic fluctuations over time [18] . These differences are clear and reinforce the existence of at least two morphotypes within that species.…”

Section: Discussionmentioning

confidence: 99%

An Examination of Morphometric Variations in a Neotropical Toad Population (Proceratophrys cristiceps, Amphibia, Anura, Cycloramphidae)

Vieira

Arzabe²,

Hernández

et al. 2008

PLoS ONE

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The species Proceratophrys cristiceps belongs to the genus Proceratophrys within the family Cycloramphidae. These amphibians are found exclusively in South America in the morphoclimatic domain of the semi-arid depression zones in northeastern Brazil known as the Caatinga. We examined intrapopulational variation using univariate and multivariate statistics with traditional and geometric morphometrics, which supported the existence of two morphotypes of this species. Our results indicated significant degrees of variation in skeletal characteristics between some natural populations of this species. Careful analyses of variability levels are fundamental to avoid taxonomic errors, principally in populations that demonstrate characteristics intimately associated with their area of occurrence, as is the case of Proceratophrys cristiceps.

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“…Similar to some other anurans, P. cristiceps displays chromatic and morphometric polymorphism ( Vieira & Vieira, 2012 ). At least two chromotypes have been described for this species ( Vieira et al, 2008 ), which may reflect environmental fluctuations and/or genetic events on populations ( Dias & Gonçalves da Cruz, 1993 ; Smith & Skúlason, 1996 ). This information has largely gone unnoticed in recent studies, but if extended to other species, it may partly explain the taxonomic inflation ( Aleixo, 2009 ; Alroy, 2003 ; Isaac, Mallet & Mace, 2004 ; Padial & De la Riva, 2006 ) observed in the genus in recent decades, with high numbers of species being described in a short period of time in the absence of accurate taxonomic revisions ( Junior et al, 2012 ).…”

Section: Introductionmentioning

confidence: 99%

Polymorphism in a Neotropical toad species: ontogenetic, populational and geographic approaches to chromatic variation inProceratophrys cristiceps(Müller, 1883) (Amphibia, Anura, Odontophrynidae)

Vieira

Oliveira

Vieira

et al. 2022

PeerJ

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Quantifying variability is important for understanding how evolution operates in polymorphic species such as those of the genus Proceratophrys Miranda-Ribeiro, 1920, which is widely distributed in South America. P. cristiceps distribution is limited to the Caatinga biome in Brazil. We examined its chromatic variation from a populational perspective, looking at different phenetic polymorphism levels and probable chromotypic association by applying statistical and GIS tools that could facilitate future taxonomic research regarding this and other species. We characterized P. cristiceps colour patterns and re-evaluated its geographic variation, highlighting potential consequences for the taxonomy of the genus. Our results revealed six principle chromotypes whose frequencies varied among sex and ontogenetic classes. Phenotypic expression appeared to respect defined proportions and evidenced selective value for the species. We conclude that individual variation, together with typological traditionalism may overestimate the polymorphic magnitude at the population level and cause taxonomic inflation. Our data support the usefulness of P. cristiceps as a model for microevolutionary studies.

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Análise das divergências morfológicas de Hyla bipunctata Spix em duas populações do Rio de Janeiro e Espírito Santo, Brasil (Amphibia, Anura, Hylidae)

Cited by 4 publications

References 0 publications

Breeding ecology of Scinax trapicheiroi (Anura, Hylidae) at a creek in the Atlantic Rainforest of Ilha Grande, southeastern Brazil

Breeding ecology of Scinax trapicheiroi (Anura, Hylidae) at a creek in the Atlantic Rainforest of Ilha Grande, southeastern Brazil

An Examination of Morphometric Variations in a Neotropical Toad Population (Proceratophrys cristiceps, Amphibia, Anura, Cycloramphidae)

Polymorphism in a Neotropical toad species: ontogenetic, populational and geographic approaches to chromatic variation inProceratophrys cristiceps(Müller, 1883) (Amphibia, Anura, Odontophrynidae)

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