Página 1 dos resultados de 1574 itens digitais encontrados em 0.015 segundos

Azana atlantica, n.sp., with reduced mouthparts and two ocelli: first record of Azana for the Neotropical region (Diptera : Mycetophilidae : Sciophilinae)

AMORIM, Dalton De Souza; OLIVEIRA, Sarah Siqueira; BALBI, Maria Isabel P. A.
Fonte: MAGNOLIA PRESS Publicador: MAGNOLIA PRESS
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
56.11%
A new Sciophilinae-Azana atlantica, sp. n. - is described from the Atlantic Forest in southeastern Brazil. The species has a number of distinctive apomorphic features, including loss of the mid ocellus, reduced mouthparts, Sc short and incomplete, first section of Rs missing, r-m elongated, longitudinal in position, aligned with the second section of Rs ( R(5)), unforked medial and cubital veins, R(4) missing, M(4) entirely absent, gonostyle triangular, with an inner row of elongated spines and a basal, digitiform inner projection. Some of these features are shared with other genera of the Azana-group of Sciophilinae. The shape of the scutum and the strong spines on the gonostyle make it clear that the species belongs in Azana, despite the features that are distinctive from the remaining species in the genus. There are ten species described in Azana to date, from United States, Europe, Sri Lanka, Canary Islands, tropical Africa and Baltic amber. This is the first Neotropical species belonging to the genus. The complete loss of M(4) and the separated gonocoxites suggest that Azana atlantica, sp. n. forms a monophyletic group with the Afrotropical species of the genus. Azana, Morganiella, Neoaphelomera, Neotrizygia, and Trizygia are shown to compose a small clade within the Azana-group of genera. The division of the genus into two subgenera - A. ( Azana) and A. ( Jugazana) - most probably renders A. ( Azana) paraphyletic and it is suggested that this should be for the time being abandoned.

Filogenia molecular e filogeografia de espécies de passeriformes (Aves): história biogeográfica da região neotropical com ênfase na Floresta Atlântica; Molecular Phylogeny and Phylogeography of Species of Passeriformes (Aves): historical Biogeography of the neotropical region with emphasis on Atlantic Forest

D'Horta, Fernando Mendonça
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 12/02/2009 PT
Relevância na Pesquisa
56.33%
Neste trabalho buscou-se contribuir para a compreensão da história biogeográfica das florestas da Região Neotropical e, em particular, da Floresta Atlântica a partir de estudos de diversificação inter e intra-específica de grupos de aves. Para investigar a história biogeográfica das florestas da região neotropical foram sequenciados genes mitocondriais (citb, ND2 e ND3) e nucleares (Fib7) de 102 amostras das seis espécies que compõem o gênero Sclerurus, S. mexicanus, S. rufigularis, S. guatemalensis, S. caudacutus, S. albigularis e S. scansor. Por outro lado, para o estudo de diversificação intra Floresta Atlântica, foram utilizadas seqüências dos mesmos marcadores de 86 indiíduos de S. scansor e de 57 de A. leucophthalmus. As análises que envolveram o gênero Sclerurus indicam que as seis espécies que o compõem são reciprocamente monofiléticas e que a diversificação do grupo se deu nos últimos 10 Ma. A origem dos padrões associados às áreas de endemismo do neotrópico, por outro lado, tiveram suas origens durante o Plioceno Superior e Pleistoceno. A congruência verificada na distribuição das linhagens associada à incongruência das relações entre linhagens indicam que histórias evolutivas distintas podem ter dado origem a padrões de distribuição de linhagens similares. Verifica-se...

Revisão taxonômica e análise cladística, baseada em dados morfológicos, do gênero Ormiophasia Townsend, 1919 (Diptera, Tachinidae, Ormiini); Taxonomic revision and cladistic analysis of the genus Ormiophasia Townsend, 1919 (Diptera, Tachinidae, Ormiini)

Gudin, Filipe Macedo
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 24/11/2014 PT
Relevância na Pesquisa
46.32%
A família Tachinidae é uma das maiores famílias de Diptera, totalizando mais de dez mil espécies descritas, grande parte da Região Neotropical, cuja classificação é extremamente confusa. Além disso, todos os taquinídeos com bionomia registrada possuem larvas endoparasitoides de outros artrópodes. Os taquinídeos da tribo Ormiini são notáveis por possuírem uma adaptação extrema para localização de seus hospedeiros (Orthoptera, Ensifera). Seus representantes apresentam o prosterno muito desenvolvido e inflado, formando uma membrana acústica. Essa estrutura é mais desenvolvida nas fêmeas, as quais localizam o hospedeiro fonotaticamente. A tribo é composta por sete gêneros, distribuídos mundialmente, com Ormiophasia Townsend, 1919, sendo o único endêmico da Região Neotropical, com nove espécies válidas. Porém, tradicionalmente sua validade tem sido questionada, sendo considerado sinônimo de Ormia Robineau-Desvoidy, distribuído em toda a América. O objetivo deste trabalho é revisar a taxonomia de Ormiophasia, redescrever as espécies atuais, descrever as espécies novas, fornecer uma chave de identificação das espécies e mapas de distribuição atualizados. Além disso, foi realizada uma análise cladística com a finalidade de testar a monofilia de Ormiophasia...

Diversidade de insetos galhadores em uma região de Floresta Ombrófila Mista, Município de São Francisco de Paula, Rio Grande do Sul, Brasil

Wenzel, Cristina Rodrigues
Fonte: Universidade Federal do Rio Grande do Sul Publicador: Universidade Federal do Rio Grande do Sul
Tipo: Trabalho de Conclusão de Curso Formato: application/pdf
POR
Relevância na Pesquisa
46.34%
Diversidade de insetos galhadores em uma região de Floresta Ombrófila Mista, Município de São Francisco de Paula, Rio Grande do Sul, Brasil. Os insetos galhadores são herbívoros especializados que, com o desenvolvimento de galhas, superaram dificuldades de obtenção de alimento e ainda adquiriram proteção contra inimigos naturais. Vantagens no uso dessa guilda em monitoramento ambiental são claras por causa de sua especificidade extrema com suas plantas hospedeiras, sua resposta a mudança nos habitats e por apresentarem facilidade de identificação através da morfologia das galhas. A análise da diversidade de insetos galhadores da região Neotropical adiciona um maior entendimento na dinâmica das comunidades herbívoras. Seis transecções foram amostradas em Floresta Ombrófila Mista para contemplar vegetações em três diferentes estágios de modificação antrópica. Foram realizadas quatro saídas durante um ano. Cada transecção foi exaustivamente amostrada durante 1h30min em cada saída de campo, procurando por evidencias de galhas. Após um esforço amostral de 72 horas, foram encontradas 149 espécies de insetos galhadores de diferentes grupos taxonômicos, reforçando o padrão para a região Neotropical com a predominância de dípteros da família Cecidomyiidae. Os resultados obtidos sustentaram a hipótese que famílias com maior número de espécies de plantas têm maior riqueza de morfotipos de galhas. A riqueza total de galhadores nas trilhas preservadas foi significativamente maior do que das trilhas intermediárias e alteradas...

Biogeography of the social wasp genus (Hymenoptera: Vespidade: Polistinae)

Silva, Marjorie da; Noll, Fernando Barbosa
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica Formato: 833-842
ENG
Relevância na Pesquisa
46.25%
Aim The aim of this study was to understand the biogeography of Brachygastra. As the spatial component of evolution is of fundamental importance to understanding the processes shaping the evolution of taxa, the known geological history of the Neotropical region was used together with the current phylogeny and distribution of species to investigate questions concerning the biogeography of Brachygastra: the ancestral ranges of Brachygastra species; their areal relationships and their congruence with previously published hypotheses; the possible associated vicariance events and the influence of land bridges between North and South America, and the split between the Amazon and Atlantic forests. Location Neotropical region, from Mexico to central Argentina and southern USA. Methods Statistical dispersal–vicariance analysis (S-DIVA) was used to reconstruct the possible ancestral ranges of Brachygastra species based on their phylogeny (divided into three groups, lecheguana, scuttelaris and smithii). A Brooks parsimony analysis (BPA) and component analysis were performed to reconstruct the areal relationships of these species within the Neotropics. Results S-DIVA suggested a widespread, South American ancestral region for Brachygastra. The ancestral B. azteca probably reached the Nearctic before a posterior vicariance event separated it from the species groups ((lecheguana (scutellaris + smithii)))...

Track analysis of the Neotropical Entimini (Coleoptera: Curculionidae: Entiminae)

Romo,Alberto; Morrone,Juan J.
Fonte: Sociedade Brasileira De Entomologia Publicador: Sociedade Brasileira De Entomologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2011 EN
Relevância na Pesquisa
56.18%
Track analysis of the Neotropical Entimini (Coleoptera, Curculionidae, Entiminae). Distributional patterns of the species belonging to the tribe Entimini from the Neotropical region were analyzed. Based on a track analysis of 22 species of Entimus, Rhigus, and Phaedropus, for which distributional data were available, two generalized tracks were found. One is located in northern Brazil, corresponding to the Amazonian subregion, and is determined by Phaedropus candidus and Rhigus speciosus. The other is located in southern Brazil, corresponding to the Parana subregion, and is determined by Entimus imperialis, E. excelsus, Phaedropus togatus, Rhigus dejeanii, R. faldermanni, R. horridus, R. lateritus, R. nigrosparsus, and R. tribuloides. The development of the Chacoan subregion is hypothesized to have been the dynamic vicariant event that fragmented the former Amazonian-Parana forest.

Corrections and additions to Catalogue of Neotropical Diptera (Tabanidae) of Coscarón & Papavero (2009)

Henriques,Augusto Loureiro; Krolow,Tiago Kütter; Rafael,José Albertino
Fonte: Sociedade Brasileira De Entomologia Publicador: Sociedade Brasileira De Entomologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2012 EN
Relevância na Pesquisa
56.26%
Some corrections and omitted taxonomic information for the "Catalogue of Neotropical Diptera. Tabanidae" are presented. Fifteen recently described species are listed for the Neotropical region. Presently, the Neotropical region has 1,205 Tabanidae species, besides 35 unrecognized species and 29 nomina nuda.

Review of the Neotropical Charipinae (Hymenoptera, Cynipoidea, Figitidae)

Ferrer-Suay,Mar; Selfa,Jesús; Pujade-Villar,Juli
Fonte: Sociedade Brasileira De Entomologia Publicador: Sociedade Brasileira De Entomologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2013 EN
Relevância na Pesquisa
56.18%
A review of the Neotropical Charipinae is given, with 35 species from four genera: Alloxysta, Apocharips, Dilyta and Phaenoglyphis. One new species, Alloxysta centroamericana Ferrer-Suay & Pujade-Villar sp. nov. is described; six Alloxysta species, Alloxysta citripes (Thomson, 1862), Alloxysta fracticornis (Thomson, 1862), Alloxysta melanogaster (Hartig, 1841), Alloxysta piceomaculata (Cameron, 1886), Alloxysta postica (Hartig, 1841) and Alloxysta pusilla (Kieffer, 1902), are recorded for the first time from the Neotropical region; 10 new records for earlier known species are also given. Diagnoses and a key to all species are also provided.

Lissopedia, gen.n. de Paratetrapediini para a região neotropical, com as descrições de três espécies novas (Hymenoptera, Apoidea, Anthophoridae)

Moure,Jesus Santiago
Fonte: Sociedade Brasileira de Zoologia Publicador: Sociedade Brasileira de Zoologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/1992 PT
Relevância na Pesquisa
56.11%
Lissopedia, a new genus is proposed for Tetrapedia globulosa Friese, 1899, from Brazil and to include Tetrapedia flavopicta Cockerell, described from Yucatan, México. Three new species: Lissopedia ochronota from Albany, Jamaica, Lissopedia xanthina from Carmen (on the River Madre de Dios), Pando, Bolívia, and Lissopedia tristriata from Manaus, Amazonas, Brazil are described. The female of Lissopedia globulosa is described from Barreiras, Bahia, Brazil and thus a locality is given for this species. This genus seems to be confined to the Neotropical Region. Exomalopsini, Tapinotaspidini and Paratetrapediini are considered as tribes of Exomalopsinae.

Phaonia Robineau-Desvoidy (Diptera, Muscidae, Phaoniinae): I. Descrição de cinco espécies novas da Região Neotropical

Coelho,Sônia Maria Prevedello
Fonte: Sociedade Brasileira de Zoologia Publicador: Sociedade Brasileira de Zoologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/1997 PT
Relevância na Pesquisa
56.11%
Phaonia boliviana sp.n., Phaonia equatorialis sp.n., Phaonia punoensis sp.n., Phaonia quercus sp.n. and Phaonia soratiensis sp.n. from Neotropical Region are described and illustrated.

Occurrence of Chandleronema longigutturata (Nematoda: Acuariidae) in Procyon cancrivorus in the Neotropical region

Suárez,Alice Graciela Rodriguez; Pesenti,Tatiana Cheuiche; Macedo,Márcia Raquel Pegoraro de; Mascarenhas,Carolina Silveira; Antunes,Gertrud Müller
Fonte: Colégio Brasileiro de Parasitologia Veterinária Publicador: Colégio Brasileiro de Parasitologia Veterinária
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/03/2015 EN
Relevância na Pesquisa
56.11%
Procyon cancrivorus is a wild animal that is found from Central America to Uruguay and northeastern Argentina. It is one of the least studied carnivore species in Brazil. For the purpose of identifying helminths that parasitize P. cancrivorus, individuals of this species that had been run over and killed by motor vehicles were collected from highways in the southern part of the state of Rio Grande do Sul. At necropsy, their organs, along with organ contents and mucous membranes, were examined for parasite collection. The nematodes found in the stomachs of these Procyonidae were cleared with lactophenol and Chandleronema longigutturata was identified. This report provides the first record of occurrences of C. longigutturata in the Neotropical region and its parasitism in P. cancrivorus.

Historical relationships among Neotropical endemic areas based on Sepedonea (Diptera: Sciomyzidae) phylogenetic and distribution data

Pires,Amanda Ciprandi; Marinoni,Luciane
Fonte: Sociedade Brasileira de Zoologia Publicador: Sociedade Brasileira de Zoologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/10/2010 EN
Relevância na Pesquisa
56.23%
The present study used the previously defined relationships among the snail-killing species of Sepedonea as the starting point for a cladistic biogeography analysis of endemic areas in the Neotropical region. The goal of the study was to use two different data sets to test the possible monophyly of two important biomes in the region: the Amazon and the Atlantic Forest. The possible historical significance of the arid biomes was also investigated. The study used Brooks Parsimony Analysis (Primary BPA). The area groups were based on previous biogeographical classifications of the Neotropial region. The analyses showed Amazonia to be non-monophyletic whereas the Atlantic forest was found to be a natural unit. The importance of including dry areas in the analyses, was highlighted by Sepedonea individuals that probably inhabit enclaves of humid forest present in the area. In general, the results indicate incongruence with the prior pattern of area relationships. In fact, one single history of the current distribution of organisms in the region is unlikely. This situation has been supported by several studies proposing incongruent hypotheses of historical relationships between endemic areas of the region.

Morphological variability and distribution of the exotic Asian Mesocyclops thermocyclopoides (Copepoda: Cyclopoida): in the Neotropical region

Suárez-Morales,Eduardo; Mercado-Salas,Nancy F; Morales-Ramírez,Álvaro
Fonte: Sociedade Brasileira de Zoologia Publicador: Sociedade Brasileira de Zoologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/10/2011 PT
Relevância na Pesquisa
46.34%
From a series of biological samples collected from different freshwater environments in Costa Rica, Central America, the exotic Asian cyclopoid Mesocyclops thermocyclopoides Harada, 1931 was identified. We analyzed the morphology and appendage ornamentation of different Neotropical populations of this species, including specimens from Honduras, southeastern Mexico, and Costa Rica. We also examined Asian specimens from Taiwan, Indonesia, Vietnam, and Thailand, and performed a comparison of the Neotropical and Asian populations including a Principal Component Analysis (PCA). The Neotropical and Asian specimens show subtle morphological variations in the antennules, antennae, mandibles, swimming legs 1-4, and fifth legs. Some characters in the Neotropical group appear to diverge from the Asian pattern and the PCA indicated that intercontinental populations of M. thermocyclopoides are far from being homogeneous. These intra-specific differences are described to expand the known morphological range of this species and to provide the first comparative analysis of an exotic copepod in the Americas. Our analysis suggests that the geographic isolation of the American populations and the subtle morphological divergences with respect to the Asian patterns could be related to speciation processes in the Neotropical region...

Revision of the Neotropical Laelius (Hymenoptera: Bethylidae) with notes on some Nearctic species

Barbosa,Diego N.; Azevedo,Celso O.
Fonte: Sociedade Brasileira de Zoologia Publicador: Sociedade Brasileira de Zoologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2014 EN
Relevância na Pesquisa
56.22%
Laelius Ashmead includes 54 known nominal species worldwide. We present a revision of the Neotropical species of Laelius and provide keys for the identification of males and females of these species. We propose fourteen nomenclatural changes and additions. For the Neotropics, seven new species from Brazil are described and illustrated: Laelius arryni sp. nov. which has clypeus bearing median lobe with apical margin straight; propodeal disc with inner discal carina complete; aedeagus with apical lobes touching each other and inner margin with hook-shaped process, L. baratheoni sp. nov. which has propodeal disc with second pair of discal carinae incomplete; genitalia with paramere wing-shaped; with long setae around the margin and cuspis wide, L. lannisteri sp. nov. which has median lobe of clypeus with apical margin straight; mesopleuron with mesopleural suture distinct; genitalia with paramere slender and angled, cuspis wide, L. martelli sp. nov. which has pronotum with series of foveae posteriorly; genitalia with paramere slender and placed dorsally, aedeagus not reaching apex of paramere, L. targaryeni sp. nov. which has head with clypeus wide and with apical margin rounded; propodeal disc without longitudinal ridge between median and inner discal carinae; forewing with r-rs & Rs longer than Rs+M...

Biogeography, vicariance and conservation of snakes of the neglected and endangered Caatinga region, north-eastern Brazil

Guedes, Thais B.; Sawaya, Ricardo J.; Nogueira, Cristiano de C.
Fonte: Wiley-Blackwell Publicador: Wiley-Blackwell
Tipo: Artigo de Revista Científica Formato: 919-931
ENG
Relevância na Pesquisa
56.11%
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Processo FAPESP: 09/50627-4; Processo FAPESP: 13/04170-8; Processo FAPESP: 08/54472-2; Processo FAPESP: 12/19858-2; Processo FAPESP: 11/50206-9; AimOur aims were to test the predictions of the vicariance model, searching for natural, non-random biogeographical units using data on snake distributions, and to assess the conservation of biogeographical patterns and underlying processes in the poorly studied Caatinga region.LocationCaatinga region, north-eastern Brazil.MethodsWe revised and georeferenced 7352 snake occurrence records at point localities, by direct examination of voucher specimens in zoological collections and revision of literature data. We tested two predictions of the vicariance model via biotic element analysis using two datasets (all taxa and endemics) mapped onto a 1 degrees x1 degrees square grid across the Caatinga. Finally, we examined the overlap between recovered biogeographical units and spatial patterns of habitat loss and protected area coverage.ResultsWe recorded 112 snake species from the Caatinga, of which 22 (20%) are endemics. The predictions of the vicariance model were corroborated by the detection of groups of species with significantly clustered ranges (biotic elements). The analysis with the full dataset detected eight biotic elements...

The Immature Stages, larval food plants and biology of neotropical mistletoe butterflies. I. The Hesperocharis group (Pieridae: Anthocharidini)

Braby, Michael; Nishida, Kenji
Fonte: The Lepidopterists Society Publicador: The Lepidopterists Society
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
56.11%
The Neotropical Region contains the highest diversity of the cosmopolitan family Pieridae in terms of generic and species richness, yet the basic natural history of many taxa from Central and South America remains unknown or poorly documented. We provide

Coleopterous galls from the Neotropical region

Maia, Valéria Cid
Fonte: Universidade de São Paulo. Museu de Zoologia Publicador: Universidade de São Paulo. Museu de Zoologia
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; Formato: application/pdf
Publicado em 01/01/2012 ENG
Relevância na Pesquisa
56.25%
Data on Neotropical coleopterous galls were compiled from the literature, which showed that 82 galls have so far been recorded among 77 plant species. The Fabaceae and Asteraceae plant families display the greatest richness in galls. Most galls are induced on stems or buds, while leaves constitute the second most attacked plant organ. Only 16 coleopteran gallers have been identified at the species level; most records are presented at the order level. The identified species belong to four families: Apionidae, Buprestidae, Curculionidae and Erirhinidae. The galls are found in Argentina, Brazil, Belize, Chile, Colombia (probably), Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama and Venezuela. Eighteen species of Coleoptera are inquilines of galls and are associated with 18 plant species, most frequently with Asteraceae, Melastomataceae and Fabaceae. The inquilines were recorded mainly in leaf galls induced by Cecidomyiidae (Diptera). The identity of these weevils is poorly known. General data indicate a lack of taxonomic studies in the Neotropical region.; Informações sobre galhas induzidas por Coleoptera na região neotropical foram compiladas a partir da literatura. Oitenta e duas galhas foram assinaladas em 77 espécies de plantas. Fabaceae e Asteraceae foram as famílias botânicas que apresentaram maior riqueza de galhas. A maioria das galhas desenvolveu-se em caule ou gema; as folhas foram o segundo órgão vegetal mais atacado. Apenas 16 indutores estão identificados em nível de espécie...

Distributional patterns of the neotropical fly genus Polietina Schnabl & Dziedzicki (Diptera, Muscidae): a phylogeny-supported analysis using panbiogeographic tools

Nihei, Silvio Shigueo; Carvalho, Claudio José Barros de
Fonte: Universidade de São Paulo. Museu de Zoologia Publicador: Universidade de São Paulo. Museu de Zoologia
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; Formato: application/pdf
Publicado em 01/01/2005 ENG
Relevância na Pesquisa
46.27%
Durante as últimas décadas, a Região Neotropical tem sido classificada em unidades históricas menores (áreas de endemismo), entretanto, muitos desses estudos não têm se preocupado em propor uma classificação sob uma perspectiva evolutiva. Conseqüentemente, uma determinada classificação pode considerar unidades biogeográficas que não representem realmente unidades naturais. No presente estudo, o padrão de distribuição do gênero Polietina Schnabl & Dziedzicki, 1911 (Diptera, Muscidae), com 15 espécies, é analisado pela aplicação de ferramentas da Pan-biogeografia para reconhecer e propor áreas de homologia primária na região Neotropical. A análise e discussão dos resultados aqui obtidos serão conciliados às informações fornecidas pela hipótese filogenética disponível para o gênero.; Over the last decades, Neotropical region has been subdivided into smaller units (areas of endemism), yet these subdivisions were not necessarily based on an evolutionary perspective. Consequently, these areas of endemism may be biogeographic units that do not actually represent natural historical units. Here, the distributional patterns of the genus Polietina Schnabl & Dziedzicki, 1911 (Diptera, Muscidae; including 15 species) are analysed by applying panbiogeographic tools to recognise and propose primary homologous areas within the Neotropical region. The analysis and discussion of the results obtained here will be reconciled to the information provided by the phylogenetic hypothesis available for the genus.

Predation on amphibians by spiders (Arachnida, Araneae) in the Neotropical region

Menin, Marcelo; Rodrigues, Domingos de Jesus; Azevedo, Clarissa Salette de
Fonte: Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiróz Publicador: Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiróz
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; Formato: application/pdf
Publicado em 01/06/2005 ENG
Relevância na Pesquisa
56.11%
Herein, we report observations about spider predation on anurans (adults and juveniles) in Central Amazonia and a literature review of spiders preying on amphibians in the Neotropical zoogeographic realm. We conducted field observations in Reserva Florestal Adolpho Ducke, Manaus, AM, and observed eight predation events on Bufonidae, Dendrobatidae, Hylidae, and Leptodactylidae frogs. The predators belong to the spider families Ctenidae, Pisauridae and Theraphosidae. Besides the families of spiders found in this study, two others - Lycosidae and Sparissidae - were found in literature. Frogs from families Centrolenidae and Microhylidae, and a caecilian (Gymnophiona, Caeciliidae) were found in literature also. There is a significant correlation between the length of the anuran (snout-vent length) and the length of spiders (cephalotorax and abdomen length). The size of the spider is similar or slightly lesser than the anuran prey. In general, the spiders preyed on adult and juvenile frogs in the breeding season. Spiders are opportunistic predators and prey on small frogs. Theraphosidae prey upon sub adults of large anurans and caecilians. As spiders can reach high densities on the forest floor - especially species of the genera Ctenus and Ancylometes - this interaction may be ecologically important for breeding anurans. Our reports and literature data provide evidence that spiders commonly prey on amphibians in Neotropic...

Neotropical cats in southeast Arizona and surrounding areas: Past and present status of jaguars, ocelots and jaguarundis

Grigione,Melissa; Scoville,Alison; Scoville,Gerald; Crooks,Kevin
Fonte: Mastozoología neotropical Publicador: Mastozoología neotropical
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2007 EN
Relevância na Pesquisa
46.32%
There are three species of neotropical cats for which the northern limit of their distribution reaches the border region of the U.S. and Mexico: the jaguar (Panthera onca), ocelot (Leopardus pardalis), and jaguarundi (Herpailurus yaguarondi). Due to their low population densities, small total numbers, and secretive habits, all three species are difficult to observe. To ensure long-term survival for neotropical cats in the region, it is imperative to identify current distribution and status in the northern limits of their range. We assessed the status of three rare neotropical felids, the jaguar (Panthera onca), ocelot (Leopardus pardalis), and jaguarundi (Herpailurus yagouaruni), in the Chiricahua and Peloncillo Mountains of southeastern Arizona where recent sightings of all three species have taken place. Study techniques included interviews and collection of unpublished and published species-sighting records, which yielded data on all three carnivores. Although jaguars and ocelots historically have occupied southeastern Arizona, we found no recent evidence of a resident, reproducing population. Recommendations are made regarding what measures are necessary to promote neotropical cat conservation in this region.