Living together, sometimes feeding in a similar way: the case of the syntopic hylid frogs Hypsiboas raniceps and Scinax acuminatus (Anura: Hylidae) in the Pantanal of Miranda, Mato Grosso do Sul State, Brazil

We studied the feeding ecology of two Hylinae anurans (Hypsiboas raniceps and Scinax acuminatus), living sympatrically and syntopically in the Pantanal of Miranda, Mato Grosso do Sul State, Brazil. The two hylid species had similar relative mouth width but differed in body size. The diet of the two frog species were composed of arthropodan prey. Both species consumed 11 different prey types, of which seven were common among them. Hypsiboas raniceps had a larger niche breadth (B A = 0.64) than S. acuminatus (B A = 0.48). Trophic niche overlap among frog species was 60.7 %. Our data are suggestive that although for many anurans the diet simply tend to reflect prey availability in the microhabitat, these two frog species, despite sharing similar microhabitat and period of activity (thus potentially exposed to a similar array of preys), tends to differ somewhat in diet (about 40%) which may result from some intrinsic ecological aspects to each of them (e.g. ecophysiology) and/or differences in body size.

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Diet of Ameerega braccata (Steindachner, 1864) (Anura: Dendrobatidae) from Chapada dos Guimarães and Cuiabá, Mato Grosso State, Brazil

Brazilian Journal of Biology ◽

10.1590/s1519-69842011000100027 ◽

2011 ◽

Vol 71 (1) ◽

pp. 189-196 ◽

Cited By ~ 9

Author(s):

LR. Forti ◽

ASO. Tissiani ◽

T. Mott ◽

C Strüssmann

Keyword(s):

Body Size ◽

Niche Breadth ◽

Prey Availability ◽

Feeding Habits ◽

Close Association ◽

Mato Grosso ◽

Important Prey ◽

Phylogenetic Perspective ◽

Toxic Alkaloids ◽

Two Populations

The understanding of feeding habits is important for anurans in general, both from an ecological and a phylogenetic perspective. For diurnal poison frogs belonging to the Dendrobatidae family, diet aspects play a crucial role in their defense and survival. Herein, we investigated feeding habits, foraging behaviour, and overall effects of habitat, sex, and body size on the diet of individuals of Ameerega braccata, a poorly known dendrobatid species. Specimens were observed and collected in the type-locality, Chapada dos Guimarães, and in the neighbouring municipality of Cuiabá, both in the State of Mato Grosso, Midwestern Brazil. The most important prey categories for A. braccata were Formicidae, Isoptera, and Acari, whose representatives were caught during active foraging. Individuals from Chapada dos Guimarães population consumed more Acari but fewer Isoptera than individuals from Cuiabá. Despite this, niche breadth values were narrow and similar for the two populations. Individuals from two distinct habitats (campo sujo and cerrado stricto sensu) showed differences in their diet, probably as an effect of differential prey availability. Females consumed more Isoptera than males. The number of prey categories used as food was not influenced by the variation of body size of the target species. However, the abundance and the volume of consumed Acari were statistically correlated with body size. The main results suggest that Ameerega braccata has a narrow niche breadth, as well as a specialised diet in ants, termites, and mites, which reinforces the hypotheses of close association between Acari consumption and the presence of skin toxic alkaloids, already found in other species of Dendrobatidae. Although differences in prey consumption between sexes are uncommon among poisonous frogs, differences in the diet composition between age classes, which probably reduce intraspecific competition, are frequently reported.

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Ecological Aspects of Phlebotomines (Diptera: Psychodidae) in Endemic Area of Visceral Leishmaniasis, Campo Grande, State of Mato Grosso do Sul, Brazil

Journal of Medical Entomology ◽

10.1603/me11082 ◽

2012 ◽

Vol 49 (1) ◽

pp. 43-50 ◽

Cited By ~ 12

Author(s):

Alessandra Gutierrez Oliveira ◽

Eunice Aparecida Bianchi Galati ◽

Carlos Eurico Fernandes ◽

Maria Elizabeth Cavalheiros Dorval ◽

Reginaldo Peçanha Brazil

Keyword(s):

Visceral Leishmaniasis ◽

Endemic Area ◽

Mato Grosso ◽

Ecological Aspects ◽

Mato Grosso Do Sul

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Prey availability influences the diet of Scinax fuscomarginatus in a Cerrado area, Central Brazil

Animal Biodiversity and Conservation ◽

10.32800/abc.2020.43.0169 ◽

2020 ◽

pp. 169-175

Author(s):

G. Michelin ◽

K. Ceron ◽

D. J. Santana

Keyword(s):

Prey Availability ◽

Stomach Contents ◽

Selectivity Index ◽

Generalist Predators ◽

Mato Grosso ◽

Central Brazil ◽

Important Prey ◽

Prey Composition ◽

Generalist Diet ◽

Mato Grosso Do Sul

Prey availability in an environment may change seasonally and these changes should be considered as determinant factors for the diets of anurans. Scinax species are generalist predators that feed on arthropods, but data concernning their diet in relation to prey availability are lacking. In this study, we describe the diet of Scinax fuscomarginatus by evaluating its possibly generalist diet related to prey availability in its environment. We studied the diet of Scinax fuscomarginatus by analysing the stomach contents of 48 individuals captured in the Campo Grande municipality, Mato Grosso do Sul state, Brazil. We found eight prey categories, the most common and most representative being Hemiptera. The selectivity index of the two most important prey varied inversely between dry and wet seasons. Prey availability also varied between seasons. These results suggest a temporal pattern in prey composition and in the diet of Scinax fuscomarginatus.

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Trap rebuilding by Myrmeleon brasiliensis larvae (Neuroptera: Myrmeleontidae) in response to flooding: the effect of body size

Revista de Biología Tropical ◽

10.15517/rbt.v69i4.44478 ◽

2021 ◽

Vol 69 (4) ◽

pp. 1224-1232

Author(s):

Vitor Gabriel De Oliveira Leite ◽

Raquel Braga Aquino Florenciano ◽

Edihanne Gamarra Arguelho ◽

Tatiane Do Nascimento Lima

Keyword(s):

Population Structure ◽

Body Size ◽

Mortality Rate ◽

Sandy Soil ◽

Natural Environment ◽

Forest Reserve ◽

Mato Grosso ◽

Trap Size ◽

Mato Grosso Do Sul ◽

Selection Of

Introduction: Immature forms of the antlion Myrmeleon brasiliensis (Neuroptera, Myrmeleontidae) build traps in dry sandy soil to capture prey. Objective: The aim of the present study was to investigate how the waterlogging of the soil due to rain affects the trap rebuilding and relocation behavior of M. brasiliensis of different sizes. Methods: The study was conducted between July and December 2019. Larvae M. brasiliensis were observed and collected from a forest reserve in the municipality of Aquidauana in the state of Mato Grosso do Sul, Brazil. Results: In the natural environment, most larvae rebuilt their traps in the same location seven days after the simulation of rain, with a smaller diameter than that observed prior to the simulation of rain. In the laboratory, the movements of M. brasiliensis larvae and rebuilding of the traps after the waterlogging of the soil was affected by body size. Larger larvae moved more and were more likely to rebuild their traps. Conclusions: The saturation of the soil affects the foraging of M. brasiliensis larvae, which are impeded from rebuilding their traps for a period. In situations of long periods of saturated soil, the mortality rate of the larvae is high and rebuilding of the traps occurs after the soil dries out, but with a smaller trap size. These data suggest that changes in the rainfall pattern can affect the population structure of M. brasiliensis larvae, with the selection of larger individuals in situations of more severe rains. In this process, the smaller larvae are more affected, as their foraging is impeded.

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Diet and morphometry of two poison frog species (Anura, Dendrobatidae) from the plateaus surrounding the Pantanal of Mato Grosso do Sul state, Brazil

Studies on Neotropical Fauna and Environment ◽

10.1080/01650521.2020.1746098 ◽

2020 ◽

pp. 1-9

Author(s):

Eduardo Oliveira Pacheco ◽

Karoline Ceron ◽

Paulo Sérgio Akieda ◽

Diego José Santana

Keyword(s):

Mato Grosso ◽

Poison Frog ◽

Frog Species ◽

Mato Grosso Do Sul

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Meadow katydids (Orthoptera: Tettigoniidae: Conocephalini) from the Central-West Region of Brazil: Morphological, bioacoustic and cytogenetic study

Zootaxa ◽

10.11646/zootaxa.4388.3.3 ◽

2018 ◽

Vol 4388 (3) ◽

pp. 347

Author(s):

JULIANA CHAMORRO-RENGIFO ◽

BRUNO CANSANÇÃO SILVA ◽

RENAN DA SILVA OLIVIER ◽

HOLGER BRAUN ◽

DOUGLAS ARAUJO

Keyword(s):

Fluorescent In Situ Hybridization ◽

Cytogenetic Study ◽

New Combination ◽

Mato Grosso ◽

West Region ◽

Ecological Aspects ◽

First Time ◽

One New Species ◽

Mato Grosso Do Sul

Three species of Conocephalus and two of Euxiphidion from several localities of the Central-West Region of Brazil were studied. Conocephalus goianus Piza, 1977, C. saltator (Saussure, 1859) and C. versicolor (Redtenbacher, 1891) are recorded for the first time from Mato Grosso do Sul, one new species Euxiphidion veroni sp. nov. is described, and a new combination, Euxiphidion caizanum comb. nov. is proposed. The calling songs of C. saltator, C. versicolor, and E. veroni sp. nov. are described. All these three species call very continuously, also in the daytime. The three species of Conocepha-lus have mitotic metaphases with 2n♂ = 33 = 32 + X and 2n♀ = 34 = 32 + XX. Euxiphidion caizanum comb. nov. and E. veroni sp. nov. have 2n♂ = 31 = 30 + X and 2n♀ = 32 = 30 + XX. Most of the autosomes of C. saltator and C. versicolor are meta/submetacentric, differing from C. goianus that has seven biarmed and nine monoarmed autosomes. Both Euxiphidion species present mostly telo/subtelocentric autosomes. The X chromosome is metacentric, and the largest element of the karyotype in the five species. No interstitial telomeric site (ITS) was observed in mitotic metaphases submitted to telomeric fluorescent in situ hybridization. Ecological aspects of the studied species are discussed.

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Diversidade Cultural nas Escolas de Fronteiras Internacionais: O Caso de Mato Grosso do Sul

Múltiplas Leituras ◽

10.15603/1982-8993/ml.v2n1p51-63 ◽

2009 ◽

Vol 2 (1) ◽

pp. 51-63 ◽

Cited By ~ 1

Author(s):

J.H.V. Pereira

Keyword(s):

Mato Grosso ◽

Mato Grosso Do Sul

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A Synopsis of Dicliptera (Acanthaceae) in Brazil, with the Description of Two New Species

Systematic Botany ◽

10.1600/036364420x15862837791186 ◽

2020 ◽

Vol 45 (2) ◽

pp. 340-348

Author(s):

James Lucas da Costa-Lima ◽

Earl Celestino de Oliveira Chagas

Keyword(s):

New Species ◽

South America ◽

The State ◽

Northeastern Brazil ◽

Mato Grosso ◽

The North ◽

New Synonyms ◽

Two New Species ◽

Mato Grosso Do Sul ◽

A New Species

Abstract—A synopsis of Dicliptera (Acanthaceae) for Brazil is presented. Six species are recognized: Dicliptera ciliaris, D. sexangularis, and D. squarrosa, widely distributed in South America; D. purpurascens, which ranges from the North Region of Brazil (in the state of Acre) to eastern Bolivia; D. gracilirama, a new species from the Atlantic Forest of northeastern Brazil; and D. granchaquenha, a new species recorded in dry and semideciduous forests in Bolivia and western Brazil, in the state of Mato Grosso do Sul. Furthermore, we propose new synonyms and designate lectotypes for eleven names. An identification key to the six accepted Dicliptera species in Brazil is provided.

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