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Articles published from 1972-2013

Description

There is still a far from complete understanding of the complex ecosystems in the Neotropics, although they have been studied since the first expeditions of the old world naturalists Marcgrave, Humboldt, Spix, Darwin, Bates and Müller. The aims and scope of the Journal are, besides taxonomic and zoogeographic surveys, analyses of animal communities and their relationship with biotic and abiotic environmental conditions. This includes the fauna of both terrestrial and fresh water ecosystems in the Neotropics. Contributions that represent original research and mini-reviews are welcome.

latest article added on October 2013

ArticleFirst AuthorPublished
Predictive model of distribution of Atta robusta Borgmeier 1939 (Hymenoptera: Formicidae): subsidies for conservation of a Brazilian leaf-cutting ant endangered speciesDáttilo, Wesley2012

Predictive model of distribution of Atta robusta Borgmeier 1939 (Hymenoptera: Formicidae): subsidies for conservation of a Brazilian leaf-cutting ant endangered species

Keywords

data modeling, MAXENT algorithm, ecological niche, Attini, conservation

Abstract

The aim of this work was to create a predictive model of the potential geographical distribution of the leaf-cutting ant Atta robusta Borgmeier 1939 (Hymenoptera: Formicidae) using ecological niche modeling. We used previous collection records available in the literature together with our database. This is the first study in Brazil using ecological niche modeling as a tool for predicting ant species distribution. Besides the already known distribution, the model generated results showing a medium to low probability of occurrence in the coastal regions of Paraná and São Paulo states, and a very high probability of occurrence in southern Bahia State, in environments popularly known as muçunungas. These environments are characterized by a lower density of trees and the dominance of herbaceous-shrub vegetation. Moreover, we discuss how geographic barriers and anthropogenic pressure in restinga environments may be the determining factors in the current distribution of this species. According to the predictive model used in this study, there is strong evidence that this species occurs only in these states and deserves special attention from government conservation agencies in the restingas where it is located.

Authors

Dáttilo, Wesley, Falcão, Jéssica C. F. and Teixeira, Marcos C.

Year Published

2012

Publication

Studies on Neotropical Fauna and Environment

Locations
DOI

10.1080/01650521.2012.700791

This article contributed by:

Original

A new species of Ityphilus (Chilopoda: Geophilomorpha: Ballophilidae) from the tropical rainforest of French Guiana, northern South AmericaPereira, Luis Alberto2013

A new species of Ityphilus (Chilopoda: Geophilomorpha: Ballophilidae) from the tropical rainforest of French Guiana, northern South America

Keywords

Geophilomorpha, Ballophilidae, Ityphilus, new species, Neotropical region

Abstract

Ityphilus geoffroyi sp. nov. (Chilopoda: Geophilomorpha: Ballophilidae) is herein described and illustrated from the holotype female, paratype male and additional non type specimens collected in French Guiana. The new species is characterized by having the internal edge of the forcipular tarsungulum partially serrate; antennae apically distinctly thickened; ventral pore-fields present in an uninterrupted series along the entire body length; all pore-fields undivided; and sternite of leg-bearing segment 1 bearing a pore-field. It is compared in detail with I. demoraisi Pereira, Minelli & Barbieri, 1995 (from Brazil) and I. guianensis Chamberlin, 1921 (from Guyana) which share these five combined traits and have a roughly similar range of leg-bearing segments. Ityphilus geoffroyi sp. nov. is only the fourth geophilomorph centipede recorded from this vast French overseas Department in northern South America, the others being I. betschi Pereira, 2010 (Ballophilidae), Schendylops tropicus (Brölemann & Ribaut, 1911) (Schendylidae), and Ribautia proxima Pereira, Minelli & Barbieri, 1995 (Geophilidae).

Authors

Pereira, Luis Alberto

Year Published

2013

Publication

Studies on Neotropical Fauna and Environment

Locations
DOI

10.1080/01650521.2012.747871

This article contributed by:

Original

Flower stage and host plant preference by floral herbivore thrips (Insecta: Thysanoptera: Frankliniella) in a Brazilian savannaAlves-Silva, Estevão2013

Flower stage and host plant preference by floral herbivore thrips (Insecta: Thysanoptera: Frankliniella) in a Brazilian savanna

Keywords

Frankliniella, Faramea cyanea, Hancornia speciosa, Solanum lycocarpum, plant–animal interactions, Brazil

Abstract

This study shows that three Frankliniella (Thysanoptera) species have species-specific associations with their hosts: F. varipes–Faramea cyanea (Rubiaceae); F. musaeperda–Hancornia speciosa (Apocynaceae) and F. fulvipes–Solanum lycocarpum (Solanaceae). All thrips species had a marked preference for flowers in anthesis, as in this stage flowers provide food and protection from environment. Frankliniella musaeperda and F. varipes populations were female-biased while F. fulvipes was male-biased. Since many species of Frankliniella have economic importance, studies on the ecology of these species are essential, given the possibility of invasion of agricultural systems in the future.

Authors

Alves-Silva, Estevão, Maruyama, Pietro Kiyoshi, Cavalleri, Adriano and Del-Claro, Kleber

Year Published

2013

Publication

Studies on Neotropical Fauna and Environment

Locations
DOI

10.1080/01650521.2012.751785

This article contributed by:

Original

Effects of coypu (Myocastor coypus) abundances and diet selection on a wetland of the Patagonian steppeGalende, Gladys I.2013

Effects of coypu (Myocastor coypus) abundances and diet selection on a wetland of the Patagonian steppe

Keywords

diet selection, coypu impact, invasive species, pest, marsh birds, Argentina, wetland

Abstract

We assessed diet selection, impact on vegetation, and explored habitat relationships with marsh birds of coypus (Myocastor coypus) in a steppe lagoon in Argentinean Patagonia. In two consecutive springs, abundance and spatial use of the coypus and nesting marsh birds were estimated by direct counts. The coypu was a selective consumer with seasonal variations in food items, and Myriophyllum sp. and Schoenoplectus californicus dominated its diet. Coypus and marsh birds showed a differential spatial use when rushes cover was high. However, when rushes cover decreased by coypu browsing, there was a similar use of space, and marsh birds were displaced to nest on the open water and other poorly protected areas of the rushes. Our results suggest that high abundances of coypu can have a detrimental effect on wetland ecosystems. Systematic monitoring and evaluation of their effects on wetlands in recently colonized areas is recommended.

Authors

Galende, Gladys I., Troncoso, Adriana and Lambertucci, Sergio A.

Year Published

2013

Publication

Studies on Neotropical Fauna and Environment

Locations
DOI

10.1080/01650521.2012.753740

This article contributed by:

Original

Immature stages of the genus Ectemnostega Enderlein (Hemiptera: Heteroptera: Corixidae), with an identification key to instars and redescription of the nymphs of E. (Ectemnostega) quadrata (Signoret)Konopko, Susana Amanda2013

Immature stages of the genus Ectemnostega Enderlein (Hemiptera: Heteroptera: Corixidae), with an identification key to instars and redescription of the nymphs of E. (Ectemnostega) quadrata (Signoret)

Keywords

Nepomorpha, Corixinae, Argentina, immature stages, taxonomy, key

Abstract

The egg and the five instars of Ectemnostega are described based on examined material and published information. The characters most useful in identifying nymphs of Ectemnostega are body and head lengths and widths; number of transverse sulcations of the rostrum; chaetotaxy of mesofemur, meso- and metatibiae, metatarsus, and pterothorax; and grade of development of wing pads. A key to the five nymphal instars of Ectemnostega is provided. The egg of E. quadrata is figured and described for the first time; and the five instars are redescribed in detail and illustrated, with emphasis on the morphometry and chaetotaxy of selected structures. Se describe el huevo y los cinco estadios de Ectemnostega a partir de material examinado e información publicada. Los caracteres mas útiles para identificar las ninfas de Ectemnostega son: longitudes y anchos de cuerpo y cabeza; número de: crestas transversales del rostro, quetotaxia del mesofemur, meso- y metatibias, metatarso, y pterotórax; y grado de desarrollo de pterotecas. Se provee una clave para identificar los cinco estadios de Ectemnostega. Por primera vez se ilustra y describe el huevo de E. quadrata; y se redescriben en detalle e ilustran los cinco estadios, con énfasis en la morfometría y quetotaxia de ciertas estructuras.

Authors

Konopko, Susana Amanda

Year Published

2013

Publication

Studies on Neotropical Fauna and Environment

Locations
DOI

10.1080/01650521.2013.774705

This article contributed by:

Original

Vocalization of Hylodes meridionalis (Mertens 1927) (Anura, Hylodidae) in Rio Grande do Sul, Brazil, with comments on nocturnal calling in the family HylodidaeLingnau, Rodrigo2013

Vocalization of Hylodes meridionalis (Mertens 1927) (Anura, Hylodidae) in Rio Grande do Sul, Brazil, with comments on nocturnal calling in the family Hylodidae

Keywords

Atlantic Forest, southern Brazil, Crossodactylus, advertisement call, territorial call

Abstract

We describe the advertisement and territorial calls of Hylodes meridionalis for the first time and provide observations on nocturnal calling activity for this species. The advertisement call has 36–82 harmonic notes, with duration of 2.71–5.69 s and dominant frequency on the third harmonic. Advertisement calls are separated by large intervals varying from 18.7 to 44.7 s. The territorial call has 1–3 notes, with duration of 0.039–0.567 seconds, and dominant frequency also on the third harmonic. Territorial calls are emitted at a much higher repetition rate than the advertisement call, with intervals of 1.1–1.6 s between each call. Frogs of the genus Hylodes are known to call mainly during the day, but for H. meridionalis nocturnal calling was observed on various occasions, and could occur regularly until two hours after sunset, or sporadically along the night. Descrevemos os cantos de anúncio e territorial de Hylodes meridionalis pela primeira vez e fornecemos observações sobre a atividade noturna de vocalização para esta espécie. O canto de anúncio tem 36–82 notas harmônicas, com duração de 2,71–5,69 segundos e frequência dominante no terceiro harmônico. Há grandes intervalos entre os cantos de anúncio, de 18,7–44,7 segundos. O canto territorial tem 1–3 notas, com duração de 0,039–0,567 segundos, e frequência dominante também no terceiro harmônico. Cantos territoriais são emitidos a uma taxa de repetição muito mais elevado do que o canto de anúncio, com intervalos de 1,1–1,6 segundos entre cada canto. As espécies do gênero Hylodes são conhecidas por vocalizar principalmente durante o dia, mas machos de H. meridionalis foram observados em atividade de vocalização noturna em várias ocasiões, sendo que podem vocalizar regularmente até duas horas após o pôr do sol, ou esporadicamente ao longo da noite.

Authors

Lingnau, Rodrigo, Zank, Caroline, Colombo, Patrick and Kwet, Axel

Year Published

2013

Publication

Studies on Neotropical Fauna and Environment

Locations
DOI

10.1080/01650521.2013.788285

This article contributed by:

Original

Body size in predator–prey interactions: an investigation of Neotropical primates and their predatorsAparecido Libório, Rogério2013

Body size in predator–prey interactions: an investigation of Neotropical primates and their predators

Keywords

body mass, Brazil, New World, Platyrrhini, predation

Abstract

Small predators tend to eat small prey, whereas larger predators attack predominantly larger prey. Neotropical primates form a substantial proportion of the total food resource available to predators, but their interactions are poorly addressed. We investigated through a review of the literature whether the body mass of predators predicts primate body mass. The mean size of predator species explained 53% of the variation in the size of the primates. Large felids, especially the jaguar, concentrate their efforts on large primates. Body size is a fundamental underlying factor in the evolution of trophic relations between Neotropical primates and their predators. Predadores de pequeno porte tendem a consumir presas pequenas, enquanto predadores maiores atacam predominantemente presas maiores. Os primatas neotropicais formam uma proporção relevante do volume total de recurso alimentar disponível para os predadores, mas as interações entre eles são pouco estudadas. Nós investigamos, através de revisão da literatura, se a massa corporal dos predadores determina a massa corporal dos primatas. O peso médio das espécies de predadores explicou 53% da variação no tamanho dos primatas. Felinos de grande porte, especialmente a onça, concentram seus esforços em primatas de maior porte. O tamanho do corpo é um fator fundamental e determinante na evolução das relações tróficas entre os primatas neotropicais e seus predadores.

Authors

Aparecido Libório, Rogério and Moura Martins, Milene

Year Published

2013

Publication

Studies on Neotropical Fauna and Environment

Locations
    DOI

    10.1080/01650521.2013.789724

    This article contributed by:

    Original

    One species, two strategies? Oviposition site variation in a member of the Leptodactylus pentadactylus group (Amphibia: Anura: Leptodactylidae)Schulze, Arne2012

    One species, two strategies? Oviposition site variation in a member of the Leptodactylus pentadactylus group (Amphibia: Anura: Leptodactylidae)

    Keywords

    Bolivia, Leptodactylus pentadactylus group, oviposition strategies, oviposition site variation, reproduction, tadpoles

    Abstract

    Many different reproductive strategies have been documented in anurans. In particular, in the family Leptodactylidae, oviposition strategies range from aquatic to terrestrial, based on eggs in foam nests. However, information on reproductive site variation within the same species is scarce. During an inventory and ecological study of amphibians in the lowlands of Bolivia, we recorded two populations of a member of the Leptodactylus pentadactylus species group. Analyses of tadpole morphology and DNA barcoding provided evidence for a conspecific status of both populations, assigned to L. vastus. One population showed semi-aquatic oviposition, whereas we assume both semi-aquatic and terrestrial egg deposition in the other population, the terrestrial reproductive mode being associated with termite mounds. We discuss deficient oviposition, populations with fixed reproductive strategies or a case of reproductive mode plasticity as possible interpretations.

    Authors

    Schulze, Arne and Jansen, Martin

    Year Published

    2012

    Publication

    Studies on Neotropical Fauna and Environment

    Locations
    DOI

    10.1080/01650521.2012.711102

    This article contributed by:

    Original

    Exploration of the egg shell structure of three Neotropical Eulimnadia species: a new insight into genus taxonomy (Crustacea: Branchiopoda: Spinicaudata)Rabet, Nicolas2012

    Exploration of the egg shell structure of three Neotropical Eulimnadia species: a new insight into genus taxonomy (Crustacea: Branchiopoda: Spinicaudata)

    Keywords

    resting egg, biogeography, egg shell, morphology, SEM, taxonomy

    Abstract

    In this work we describe the external morphology and shell cross section of eggs of three species of Brazilian Eulimnadia: E. geayi, E. colombiensis and E. magdalensis. In these species, cross sections show variation of vesicle size and strut thickness in the alveolar layer and also possible presence of hollows. With these new records, we increase the total number of known Brazilian Eulimnadia species to four, due to different egg structures. All four species were already reported from Venezuela, suggesting that Eulimnadia species have relatively wide distributions and a lower tendency for endemism than fresh water Anostracans in South America. Neste estudo, apresentamos a descrição da morfologia externa e interna da casca dos ovos de três espécies brasileiras de Eulimnadia: E. geayi, E. colombiensis e E. magdalensis. O corte transversal dos ovos revela uma relativa espessura das suas paredes, incluindo uma camada alveolar com vesículas de tamanho variável e eventual presença de cavidades. Além disso, com os novos registros aqui apresentados, elevamos para quatro o número total de espécies brasileiras de Eulimnadia identificadas através da morfologia dos ovos. O fato que todas estas já foram previamente registradas na Venezuela, sugere que as espécies de Eulimnadia têm uma relativamente ampla distribuição e uma menor tendência para o endemismo do que as espécies de Anostraca de água doce da América do Sul.

    Authors

    Rabet, Nicolas, Godinho, Leandro B., Montero, David and Lacau, Sébastien

    Year Published

    2012

    Publication

    Studies on Neotropical Fauna and Environment

    Locations
    DOI

    10.1080/01650521.2012.711967

    This article contributed by:

    Original

    A new species of Petersitocoroides Brailovsky (Hemiptera: Heteroptera: Coreidae: Coreini) from BoliviaBrailovsky, Harry2012

    A new species of Petersitocoroides Brailovsky (Hemiptera: Heteroptera: Coreidae: Coreini) from Bolivia

    Keywords

    Bolivia, Heteroptera, Coreidae, Petersitocoroides, new species

    Abstract

    Petersitocoroides saphis, a new species from Bolivia, is described and included in the tribe Coreini (Heteroptera). Dorsal view illustrations and drawings of the male genital capsule and paramere are provided.

    Authors

    Brailovsky, Harry

    Year Published

    2012

    Publication

    Studies on Neotropical Fauna and Environment

    Locations
    DOI

    10.1080/01650521.2012.722780

    This article contributed by:

    Original

    Recent Articles

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    published 2013 in Studies on Neotropical Fauna and Environment

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