Itamar Martins

Itamar Martins
University of Taubaté | UNITAU · Laboratório de Zoologia

About

57
Publications
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1,419
Citations
Additional affiliations
January 1997 - February 2017
University of Taubaté
Position
  • Herpetology Amphibians

Publications

Publications (57)
Article
Full-text available
Using an integrative approach (morphology of the adult and larvae, bioacoustics, osteology, karyotype, and molecular data), we described a new tetraploid species of Odontophrynus to the Mantiqueira mountain range, in southeastern Brazil. The data suggest that Odontophrynus toledoi sp. nov., O. juquinha and Odontophrynus sp. (aff. juquinha) comprise...
Article
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In this study, we describe the calls emitted by Dendropsophus microps, a species of frog in the family Hylidae, in Serra da Mantiqueira, Campos do Jordão, São Paulo, Brazil, and evaluate their functions in the social context using playback experiments. Between October 2016 and November 2017, 15 males of D. microps were recorded. Six hundred and fiv...
Article
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Understanding of aspects of the structure of ichthyological communities and how these relate to the environment and its natural variation has been one of the principal objectives of ecological studies conducted in freshwater environments. The objective of this study was to evaluate the relationship between fish species composition in the Una River...
Article
Fish belonging to the Belonidae family have a wide geographic distribution in tropical and subtropical regions. These fish have extended upper and lower jaws forming a bony blade with numerous teeth projected in front of the head. Some specimens can reach considerable sizes, over 100 cm in length. A Brazilian 20-y-old male sought care in an emergen...
Article
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The secretions of the Giant Monkey Frog Phyllomedusa bicolor are used by populations in the Amazon regions (mainly the indigenous Katukinas and Kaxinawás). The so-called “toad vaccine” or “kambô” is applied as a medication for infections and to prevent diseases, and also as physical and mental invigorator, and analgesic. Since the 1980s, researcher...
Article
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We describe a new species of Boana endemic to the Araguaia-Tocantins Basin in the center of the Brazilian Cerrado that was previously confused with species of the B. pulchella group. The new species is tentatively included in the B. albopunctata group on the basis of morphological and bioacoustics traits. The new species is characterized by a round...
Article
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This study focus on an inventory of the ichthyofauna of the Una river, a tributary of the Paraíba do Sul river, located in the region of Paraíba do Sul River Valley, in the State of São Paulo. Sampling was carried out in three sampling areas along the channel of the Una river between April 2016 and March 2017. For the collection of fish specimens,...
Article
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Scinax hayii was described in 1909 from the municipality of Petrópolis, State of Rio de Janeiro, Brazil. Morphological variation and advertisement calls have been previously reported for other populations across the species distribution (Lutz 1973; Heyer et al. 1990; Cardoso & Andrade 1991; Pombal et al. 1995; Magrini et al. 2011; Abrunhosa et al....
Article
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Two new species of Pseudopaludicola from midwestern Brazil are described. One of them, distributed in Bolivian and Brazilian areas within the Upper Paraguay and Upper Guaporé river basins, is characterized by the presence of a conspicuous conical tubercle on each heel, by T-shaped terminal phalanges, and so belongs to the formally recognized Pseudo...
Article
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A new species of Pseudopaludicola is described from human-altered areas originally covered by Semideciduous Forest in northwestern state of São Paulo, southeastern Brazil. Morphologically, the new species differs from four species belonging to the P. pusilla group by the absence of either T-shaped terminal phalanges or toe tips expanded, and from a...
Article
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Comparisons of advertisement calls of anurans can be used to determine intra- and interspecific differences or affinities. Described from midwestern Brazil, Pseudopaludicola mystacalis is widely distributed and abundant in major open Brazilian ecosystems. However, researchers frequently fail to determine the true taxonomic status of some of these p...
Article
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Spatial and environmental processes influence species composition at distinct scales. Previous studies suggested that the distribution of larval anurans at the landscape-scale is influenced by environmental gradients related to adult breeding site selection, such as pond canopy cover, but not by water chemistry. However, the combined effects of spa...
Article
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Frogs are immediately associated to their conspicuous vocalizations emitted during the breeding season. Therefore, many scientists were inspired to study their acoustic communication. Nowadays, many types of calls are described and we felt the need of reviewing the terminology currently and historically applied. As a result, we proposed the classif...
Article
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Here, we review the species of anuran amphibian from the Serra da Bocaina National Park and its buffer area, in the Atlantic Forest of southeastern Brazil, comparing the data from a recent survey with museum records. We surveyed adult and larval anurans in ponds, marshes, and streams discontinuously from May 2008 to January 2011. In total, 63 anura...
Preprint
Full-text available
Spatial and environmental processes influence species composition at distinct scales. Previous studies suggested that the landscape-scale distribution of larval anurans is influenced by environmental gradients related to adult breeding site selection, such as pond canopy cover, but not water chemistry. However, the combined effects of spatial, pond...
Article
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We provide novel data on the biology of Proceratophrys melanopogon and describe its larval external morphology and internal oral features on the basis of specimens from the Serra do Mar, southeastern Brazil. We also review the larval internal oral features of the genus, including descriptions and comparisons with P. cururu and P. moratoi. The exter...
Article
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Due to minute size, overall morphological similarities, scarcity of diagnostic characters after preservation, and usual sympatric or even syntopic occurrence of two or more species of Pseudopaludicola, the taxonomy of the genus is not yet a matter of consensus. Three species in the genus Pseudopaludicola Miranda-Ribeiro, 1926 were described by Cope...
Article
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A new species of the genus Holoaden is described from the Atlantic forest of the state of São Paulo, Brazil, being restricted to primary or slightly disturbed high altitude cloud forests along the northeastern portion of the Serra do Mar. The typelocality is determined as Estação Ecológica de Bananal, in the Municipality of Bananal, State of São Pa...
Article
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We describe the external morphology and internal oral features of tadpoles of the torrent frog Hylodes magalhaesi from its type locality in southeastern Brazil. The tadpole can be distinguished from others of the genus mainly by the size of marginal papillae gap, the number and distribution of marginal papillae rows, and the number of submarginal p...
Article
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Provete, D. B, Franco-Belussi, L., de Souza Santos, L. R., Zieri, R., Moresco, R. M., Martins, I. A., de Almeida, S. C., & de Oliveira, C. (2012). Phylogenetic signal and variation of visceral pigmentation in eight anuran families. —Zoologica Scripta, 41, 547-556. Visceral pigmentation is found in several organs and structures of ectothermic animal...
Article
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A new species of Pseudopaludicola is described from the state of Mato Grosso, western Brazil. The new species inhabits the transition zone between Brazilian Cerrado and Amazon rainforest in northern Mato Grosso, and is characterized by its medium size (snout-vent length 12–17 mm), lack of T-shaped terminal phalanges, toe tips not expanded laterally...
Article
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The genus Holoaden includes three species described so far, but the only published cytogenetic data is from Holoaden bradei, with the karyotype 2n = 18, based on conventional staining. In the present paper we report, for the first time, data on chromosomes of H. luederwaldti, which presented 2n = 18 and a case of natural triploidy, with 2n = 3x = 2...
Article
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The northwestern region of São Paulo was extensively deforested during the agricultural expansion in the last century and only small fragments of the original vegetation cover remained. In this study, we investigated how habitat features influence the composition, richness, and diversity of anurans in environments homogenized by agricultural activi...
Conference Paper
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Background / Purpose: One approach often used by ecologists to understand how a wide variety of species can co-exist locally is to study how they use available resources. The key assumption of these studies is that resources are limited and organisms compete for them. Previous studies of resources partitioning in animal communities, including tad...
Conference Paper
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Background/Question/Methods Predation is regarded as one of the major processes shaping natural communities. Predators influence space use, behavior, abundance and richness of prey species. Previous studies demonstrated that adult anurans could access the predation risk of a breeding site and avoid laying eggs on it. Additionally, they seem to be...
Article
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The feeding habits of the shortnose guitarfish, Zapteryx brevirostris, were studied based on 382 specimens from the northern São Paulo coast, southeast Brazil. The diet showed a predominance of crustaceans (carideans and amphipods), polychaete annelids, and occasionally small fish, sipunculids, and cephalopods. The diets of males and females were s...
Article
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The genus Colobodactylus comprises two species, C. taunayi and C. dalcyanus , both of which occur only in forested areas of the Brazilian Atlantic Forest ( Vanzolini and Ramos , 1997; Rodrigues et al., 2007). Colobodactylus taunayi is more common and its distribution ...
Article
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A new species of Ischnocnema is described from Serra da Mantiqueira, Municipality of Campos do Jordão, State of São Paulo, Brazil. The new species is a member of the Ischnocnema lactea Species Series. The new species differs from other species in the Ischnocnema lactea Species Series by its small size, snout sub-elliptical in dorsal view and acumin...
Article
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Jordão, state of São Paulo, southeastern Brazil; type locality, 22°44'S, 45°36'W, 1,600 m a.s.l.), the species was only described in 1920, by Miranda-Ribeiro. The Amphibia Collection of the Museu de Zoologia da Universidade de São Paulo houses 16 speci-mens collected in Campos do Jordão, state of São Paulo, up to 1967, and one specimen collected in...
Article
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Physalaemus jordanensis was described by Bokermann (1967), based on specimens from “Lagoinha da Serra” (1500 m a.s.l.), Campos do Jordão, Serra da Mantiqueira, State of São Paulo, Brazil. Like other members of P. gracilis species group, presents a restricted geographical distribution (Nascimento et al. 2005), and after the 1980s, this species was n...
Article
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A recent substantial rearrangement of the 882 described eleutherodactyline frog species has considerably improved the understanding of their systematics. Nevertheless, many taxonomic aspects of the South American eleutherodactyline species remain unknown and require further investigation using morphological, cytogenetic and molecular approaches. In...
Article
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O objetivo do trabalho foi analisar a taxocenose de bagres marinhos do complexo baía-estuário de São Vicente, SP. As coletas foram mensais, no período de setembro de 2000 a agosto de 2002, em quatro regiões do estuário. Foram capturados 3.985 exemplares, pertencentes a cinco gêneros e seis espécies, totalizando 47.807 g. A espécie Cathorops spixii...
Article
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The purpose of this study was to analyze the taxocenose of marine catfish in the complex bay-estuary of Sao Vicente, Brazil. The sampling was done monthly from September/2000 to August/2002, in four places of the estuary. Were caught 3.985 individuals belonging for 5 genus and 6 species, totalizing 47.807 g. The specie Cathorops spixii showed the b...
Article
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O sítio de vocalização e os parâmetros acústicos do canto de anúncio foram determinados para 18 espécies de anuros em seis corpos d'água na região noroeste paulista. A freqüência dominante do canto de anúncio foi positivamente correlacionada com o CRC das espécies: as espécies pequenas vocalizaram em uma freqüência mais alta e as maiores vocalizara...
Article
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The calling site and the acoustic parameters of the advertisement call were determined for 18 anuran species in six ponds in the northwest region of São Paulo State. The dominant frequency of the advertisement call was positively correlated with the CRC of the species: small size species vocalized in a higher frequency, whereas larger species vocal...
Article
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Visando analisar as associações entre as biomassas de peixes Sciaenidae e de camarões Penaeoidea, foram feitas amostragens com barco de arrasto nas quatro estações do ano de 2001, em um gradiente de profundidade, nas regiões de Ubatuba, Caraguatatuba e São Sebastião. Em cada transecto, foram obtidas amostras de água e de sedimento. As hipóteses de...
Article
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To study the relationships among Sciaenidae fish and Penaeoidea shrimp biomass, fieldwork was carried out in the north coast of São Paulo state, Brazil, during the four seasons of 2001. Samples were collected in transects from different depths at Ubatuba, Caraguatatuba, and São Sebastião cities. Water and sediment were collected from each transect....
Article
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We analysed spatial and acoustic partitioning among four species of Hyla belonging to two species-groups: nana (H. nana and H. sanborni) and rubicundula (H. elianeae and H. jimi). Field activities were conducted at three permanent ponds, from 1998 through 2001. Four attributes of the calling sites were analysed: perch height, distance of the perch...
Article
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Catfish occur in marine and freshwater environments worldwide. They have three serrated venomous bony stings in the dorsal and pectoral fins that are used for defence against predators and are refilled by glandular tissues under the epithelium. However, some catfishes do not have poisonous glands next to the sting and cause traumatic wounds without...
Article
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Specimens of the zipper sand skate Psammobatis extenta were collected in the region of Ubatuba off the northern coast of the State of São Paulo, Brazil, monthly for one year (January–December 2000), at 25- to 40-m isobaths. A total of 123 individuals were caught. The total length (TL) of females averaged 224.6 mm, and of males 217 mm. The overall s...
Article
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In this work we present a description of the advertisement call of H. jimi, the locality type, and of H. elianeae, until now unknown in the literature. Field activities were carried out from August 1997 through June 1999; recordings were made in two open-area environments in the Botucatu region, São Paulo State. Vocalizations of 100 individuals (49...
Article
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Vocal communication traits of Hyla nana and Hyla sanborni, of the nana species group, were studied from August 1997 until June 1999 in two large permanent ponds located in an open field in Botucatu, São Paulo State. One hundred thirty-one individuals, 71 of H. nana and 58 of H. sanborni, were recorded in the beginning of their vocalization activity...
Article
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Fishes of the family Scorpaenidae are responsible for severe injuries and occasionally deaths in humans around the world. The more venomous fishes on the Brazilian coast and in the Southwestern Atlantic region are classified in the genus Scorpaena (family Scorpaenidae). However, there are few studies on the venomous apparatus, the effects of the ve...
Article
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Fishes of family Batrachoididae are responsible for great number of injuries in fishermen in North and Northeast regions of Brazil. The genus Thalassophryne presents various venomous species of fishes found in the Brazilian coast, T. nattereri being the most common of them. The venom is ejected through two hollow spines on the dorsal fin and two on...

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