Diversidade de anfíbios do Estado de Mato Grosso do Sul, Brasil / Amphibian diversity of Mato Grosso do Sul State, Brazil

Amphibian species from Mato Grosso do Sul state were compiled and checked for the first time. A total of 97 species were recorded, representing more than 10% of the known Brazilian amphibians. Twenty five anuran genera in nine families and only one caecilian were recorded. Cerrado was the richest area followed by semideciduous forests, Chaco, and veredas (palm swamps). It was recorded 56 species in floodplain areas and 92 in the surrounding cerrados. The Serra da Bodoquena National Park and some Pantanal areas were better sampled than other regions in Mato Grosso do Sul, resulting in sampling gaps across the state. Important areas for future inventories were identified: mountainous regions in Serra de Maracaju and those bordering the Apa river, Brazilian chacoan areas, the Taquari river alluvial fan, the broad Taquari-Itiquira flat area, the Central Plateau scarps, wet areas from Parana river bordering São Paulo state, and inland areas from Pantanal.(AU)

A fauna de anfíbios do estado de Mato Grosso do Sul foi compilada e elaborada pela primeira vez, totalizando 97 espécies, o que representa pouco mais de 10% das espécies que ocorrem no Brasil. Nove famílias e 25 gêneros de Anura e apenas uma espécie de Gymnophiona foram registradas. As áreas de Cerrado apresentaram a maior riqueza, seguidas pelas florestas estacionais semideciduais, Chaco e veredas. Em relação às macrorregiões consideradas, foram registradas 56 espécies para a planície de inundação (majoritariamente representada pelo Pantanal) e 92 para o planalto. As regiões mais amostradas em Mato Grosso do Sul são o Parque Nacional da Serra da Bodoquena e algumas áreas do Pantanal, o que resulta em lacunas de amostragens por todo o estado, principalmente nas regiões norte, leste/sudeste e parte do oeste/sudoeste. Foram identificadas áreas consideradas importantes para amostragens em decorrência da complexidade de fitofisionomias e relevos encontrados no estado: Maciço do rio Apa, Serra de Maracaju, grande parte do Chaco brasileiro, leque do rio Taquari, planalto do Taquari-Itiquira, escarpas do planalto Central, áreas úmidas/florestas estacionais da planície do rio Paraná e áreas interioranas do Pantanal, onde o acesso é difícil.(AU)

Diversidade de anfíbios do Estado de Mato Grosso do Sul, Brasil

ABSTRACT Amphibian species from Mato Grosso do Sul state were compiled and checked for the first time. A total of 97 species were recorded, representing more than 10% of the known Brazilian amphibians. Twenty five anuran genera in nine families and only one caecilian were recorded. Cerrado was the richest area followed by semideciduous forests, Chaco, and veredas (palm swamps). It was recorded 56 species in floodplain areas and 92 in the surrounding cerrados. The Serra da Bodoquena National Park and some Pantanal areas were better sampled than other regions in Mato Grosso do Sul, resulting in sampling gaps across the state. Important areas for future inventories were identified: mountainous regions in Serra de Maracaju and those bordering the Apa river, Brazilian chacoan areas, the Taquari river alluvial fan, the broad Taquari-Itiquira flat area, the Central Plateau scarps, wet areas from Parana river bordering São Paulo state, and inland areas from Pantanal.

RESUMO A fauna de anfíbios do estado de Mato Grosso do Sul foi compilada e elaborada pela primeira vez, totalizando 97 espécies, o que representa pouco mais de 10% das espécies que ocorrem no Brasil. Nove famílias e 25 gêneros de Anura e apenas uma espécie de Gymnophiona foram registradas. As áreas de Cerrado apresentaram a maior riqueza, seguidas pelas florestas estacionais semideciduais, Chaco e veredas. Em relação às macrorregiões consideradas, foram registradas 56 espécies para a planície de inundação (majoritariamente representada pelo Pantanal) e 92 para o planalto. As regiões mais amostradas em Mato Grosso do Sul são o Parque Nacional da Serra da Bodoquena e algumas áreas do Pantanal, o que resulta em lacunas de amostragens por todo o estado, principalmente nas regiões norte, leste/sudeste e parte do oeste/sudoeste. Foram identificadas áreas consideradas importantes para amostragens em decorrência da complexidade de fitofisionomias e relevos encontrados no estado: Maciço do rio Apa, Serra de Maracaju, grande parte do Chaco brasileiro, leque do rio Taquari, planalto do Taquari-Itiquira, escarpas do planalto Central, áreas úmidas/florestas estacionais da planície do rio Paraná e áreas interioranas do Pantanal, onde o acesso é difícil.

Diversidade de anfíbios do Estado de Mato Grosso do Sul, Brasil / Amphibian diversity of Mato Grosso do Sul State, Brazil

Amphibian species from Mato Grosso do Sul state were compiled and checked for the first time. A total of 97 species were recorded, representing more than 10% of the known Brazilian amphibians. Twenty five anuran genera in nine families and only one caecilian were recorded. Cerrado was the richest area followed by semideciduous forests, Chaco, and veredas (palm swamps). It was recorded 56 species in floodplain areas and 92 in the surrounding cerrados. The Serra da Bodoquena National Park and some Pantanal areas were better sampled than other regions in Mato Grosso do Sul, resulting in sampling gaps across the state. Important areas for future inventories were identified: mountainous regions in Serra de Maracaju and those bordering the Apa river, Brazilian chacoan areas, the Taquari river alluvial fan, the broad Taquari-Itiquira flat area, the Central Plateau scarps, wet areas from Parana river bordering São Paulo state, and inland areas from Pantanal.

A fauna de anfíbios do estado de Mato Grosso do Sul foi compilada e elaborada pela primeira vez, totalizando 97 espécies, o que representa pouco mais de 10% das espécies que ocorrem no Brasil. Nove famílias e 25 gêneros de Anura e apenas uma espécie de Gymnophiona foram registradas. As áreas de Cerrado apresentaram a maior riqueza, seguidas pelas florestas estacionais semideciduais, Chaco e veredas. Em relação às macrorregiões consideradas, foram registradas 56 espécies para a planície de inundação (majoritariamente representada pelo Pantanal) e 92 para o planalto. As regiões mais amostradas em Mato Grosso do Sul são o Parque Nacional da Serra da Bodoquena e algumas áreas do Pantanal, o que resulta em lacunas de amostragens por todo o estado, principalmente nas regiões norte, leste/sudeste e parte do oeste/sudoeste. Foram identificadas áreas consideradas importantes para amostragens em decorrência da complexidade de fitofisionomias e relevos encontrados no estado: Maciço do rio Apa, Serra de Maracaju, grande parte do Chaco brasileiro, leque do rio Taquari, planalto do Taquari-Itiquira, escarpas do planalto Central, áreas úmidas/florestas estacionais da planície do rio Paraná e áreas interioranas do Pantanal, onde o acesso é difícil.

Padrão reprodutivo de Elachistocleis bicolor (Anura, Microhylidae) na Serra da Bodoquena, Mato Grosso do Sul, Brasil

The reproductive pattern of Elachistocleis bicolor (Guérin Méneville, 1838) was studied at Serra da Bodoquena, from October 2000 to September 2001. Reproduction occurred in the wet season (October to April) and was correlated to high continuous pluviometric precipitation. The species presents sexual size dimorphism, with females larger than males. The number of mature eggs per ovary was 620 ± 251 (n=39) and mature eggs measured 1.15 ± 0.30 mm (n=40). Elachistocleis bicolor presented significant relations between snout-vent length and number of mature eggs (n=39; r²=0.25; p=0.001), individual weight and number of mature eggs (n=41, r²=0.30; p=0.002), snout-vent length and ovarian weight (n=35; r²=0.47; p 0.01), and individual weight and ovarian weight (n=36; r²=0.55; p 0.01). Weight and volume are better to study size-fecundity relationships than snout-vent length. The females invested 22.7 ± 6.3 % (n=35) of their weights in reproduction and the variance associated to this variable was high, related to the reproductive mode of the species.

Padrão reprodutivo de Elachistocleis bicolor (Anura, Microhylidae) na Serra da Bodoquena, Mato Grosso do Sul, Brasil

The reproductive pattern of Elachistocleis bicolor (Guérin Méneville, 1838) was studied at Serra da Bodoquena, from October 2000 to September 2001. Reproduction occurred in the wet season (October to April) and was correlated to high continuous pluviometric precipitation. The species presents sexual size dimorphism, with females larger than males. The number of mature eggs per ovary was 620 ± 251 (n=39) and mature eggs measured 1.15 ± 0.30 mm (n=40). Elachistocleis bicolor presented significant relations between snout-vent length and number of mature eggs (n=39; r²=0.25; p=0.001), individual weight and number of mature eggs (n=41, r²=0.30; p=0.002), snout-vent length and ovarian weight (n=35; r²=0.47; p 0.01), and individual weight and ovarian weight (n=36; r²=0.55; p 0.01). Weight and volume are better to study size-fecundity relationships than snout-vent length. The females invested 22.7 ± 6.3 % (n=35) of their weights in reproduction and the variance associated to this variable was high, related to the reproductive mode of the species.

Padrão reprodutivo de Elachistocleis bicolor (Anura, Microhylidae) na Serra da Bodoquena, Mato Grosso do Sul, Brasil

The reproductive pattern of Elachistocleis bicolor (Guérin Méneville, 1838) was studied at Serra da Bodoquena, from October 2000 to September 2001. Reproduction occurred in the wet season (October to April) and was correlated to high continuous pluviometric precipitation. The species presents sexual size dimorphism, with females larger than males. The number of mature eggs per ovary was 620 ± 251 (n=39) and mature eggs measured 1.15 ± 0.30 mm (n=40). Elachistocleis bicolor presented significant relations between snout-vent length and number of mature eggs (n=39; r²=0.25; p=0.001), individual weight and number of mature eggs (n=41, r²=0.30; p=0.002), snout-vent length and ovarian weight (n=35; r²=0.47; p 0.01), and individual weight and ovarian weight (n=36; r²=0.55; p 0.01). Weight and volume are better to study size-fecundity relationships than snout-vent length. The females invested 22.7 ± 6.3 % (n=35) of their weights in reproduction and the variance associated to this variable was high, related to the reproductive mode of the species.