Papers by Renato Gregorin
Zoosystema, Sep 18, 2018
Les articles ainsi que les nouveautés nomenclaturales publiés dans Zoosystema sont référencés par... more Les articles ainsi que les nouveautés nomenclaturales publiés dans Zoosystema sont référencés par / Articles and nomenclatural novelties published in Zoosystema are referenced by:-ZooBank ® (http://zoobank.org) PHOTOCOPIES : Les Publications scientifiques du Muséum adhèrent au Centre Français d'Exploitation du Droit de Copie (CFC), 20 rue des Grands Augustins, 75006
Mammalia, Oct 1, 2004
Although Freeman (1981) and Koopman (1993) (Peters et al. 2002). Within Molossops sensu stricto, ... more Although Freeman (1981) and Koopman (1993) (Peters et al. 2002). Within Molossops sensu stricto, included up to four subgenera (Cynomops, Molossops, there are two well-defined species, M. temminckii Cabreramops, and Neop/atymops) within Molossops, and M. neglectus. The former species is relatively there is strong morphological, chromosomal, and common and has a broad geographic distribution molecular data that suggests these four taxa are sepa-in South America, occurring from Colombia and rate divergent lineages worthy of full generic status Venezuela in the north to Peru, Bolivia, Paraguay,
Acta Oecologica-international Journal of Ecology, Aug 1, 2017
Mutualistic interactions between animals and plants vary over time and space based on the abundan... more Mutualistic interactions between animals and plants vary over time and space based on the abundance of fruits or animals and seasonality. Little is known about this temporal dynamic and the influence of biotic and abiotic factors on the structure of interaction networks. We evaluated changes in the structure of network interactions between bats and fruits in relation to variations in rainfall. Our results suggest that fruit abundance is the main variable responsible for temporal changes in network attributes, such as network size, connectance, and number of interactions. In the same way, temperature positively affected the abundance of fruits and bats. An increase in temperature and alterations in rainfall patterns, due to human induced climate change, can cause changes in phenological patterns and fruit production, with negative consequences to biodiversity maintenance, ecological interactions, and ecosystem functioning.
DOAJ (DOAJ: Directory of Open Access Journals), 2009
In fact, the distribution of this species is much broader than initially reported, and the threat... more In fact, the distribution of this species is much broader than initially reported, and the threatened status is no longer valid (Chiarello et al. 2008; Oprea and Wilson 2008). Despite the records of C. doriae for northeastern Brazil (Silva and Guerra 2000; Mikalauskas et al. 2006), no specimen has been collected in the state of Espírito Santo until the present record (Figure1).
Neotropical Biology and Conservation, Nov 25, 2013
The process of habitat fragmentation has been intensified by human action, and therefore becomes ... more The process of habitat fragmentation has been intensified by human action, and therefore becomes increasingly more important to establish protected areas for conservation of native species, including with the participation of private entities. Wildlife surveys are essential to understanding the regional patterns of biological diversity, allowing a better characterization of the geographic distribution of specific taxa, supporting an adequate planning for nature conservation. We conducted an inventory of bats in a fragmented area of Atlantic Forest at Private Reserve of Natural Heritage Fazenda Lagoa, Minas Gerais, southeastern Brazil. With 110 captures, we recorded 16 species of bats belonging to four families, with dominance of generalist frugivorous species. Seven of the 10 trophic guilds categorized for Neotropical bats were recorded at the study area. This study adds important information about a region that represents a gap in the knowledge of Brazilian chiropterofauna, subsidizing possible conservation plans in the future.
<i>Glyphonycteris daviesi</i>(Hill, 1964), a rare Central American and Amazonian bat recorded for Eastern Brazilian Atlantic Forest (Chiroptera, Phyllostomidae)
Mammalia, Dec 1, 2005
<p><strong>Revalidation of <em>Saguinus ursula</em> Hoffmannsegg (Primates: Cebidae: Callitrichinae)</strong></p>
Zootaxa, Oct 14, 2013
ABSTRACT In this study, we review the taxonomy of Saguinus niger (É. Geoffroy) and revalidate Sag... more ABSTRACT In this study, we review the taxonomy of Saguinus niger (É. Geoffroy) and revalidate Saguinus ursula Hoffmannsegg as a distinct species. The revalidation is based on pelage coloration, and the pattern of morphological divergence is corroborated by molecular data. Samples from the east bank of the Tocantins River (S. ursulus) were distinct from specimens of S. niger from the west bank in having mid-dorsal hair with an wide (5.0–55 mm) intermediary band of bright and golden buffy color; long (ca. 23–26 mm) dorsal hair at the inter-scapular region; and naked (not noticeably haired) face, hands and fingers. Saguinus ursulus and S. niger are allopatric, and Tocantins River is putatively acting as an effective barrier for gene flow. A lectotype to S. ursulus from syntypes was designated.
Lundiana, Dec 31, 2004
Introdução O Cerrado constitui o segundo maior domínio morfoclimático do Brasil e da América do S... more Introdução O Cerrado constitui o segundo maior domínio morfoclimático do Brasil e da América do Sul, ocupando mais de 200 milhões de hectares e abrigando cerca de 2.000 espécies de plantas lenhosas adaptadas às duras condições climáticas, edáficas e hídricas que caracterizam este domínio (Ab' Saber, 1977; Dias, 1992; Rizzini, 1997). A região do Cerrado exibe também uma enorme heterogeneidade espacial, estendendo-se por mais de 20 graus de latitude, com altitudes variando de quase zero a 2.000 m. O domínio abriga diferentes bacias hidrográficas com grande diversidade de solos e climas, resultando em uma grande variedade de ambientes nas diferentes áreas de Cerrados (Dias, 1992). O Cerrado vem sendo devastado em rápida progressão (em uma taxa de 1,5% ao ano-R. B. Machado, com. pes.) e ações prioritárias para sua conservação são urgentes. Mesmo assim, o Cerrado tem recebido pouca atenção em relação à sua fauna. De fato, não existem dados confiáveis sobre o estado da conservação da maioria das espécies de vertebrados desse domínio e as tentativas sistemáticas para um manejo sustentável ainda são incipientes (Mares et al.,1989 e Dias, 1992). Os quirópteros estão entre os mamíferos mais abundantes em número de espécies e de indivíduos em muitas áreas das regiões tropicais e
Cladistics, Apr 1, 2015
Molossidae is a large (roughly 100 species) pantropically distributed clade of swift aerially ins... more Molossidae is a large (roughly 100 species) pantropically distributed clade of swift aerially insectivorous bats for which the phylogeny remains relatively unknown and little studied compared with other speciose groups of bats. We investigated phylogenetic relationships among 62 species, representing all extant molossid genera and most of the subgenera, using 102 morphological characters from the skull, dentition, postcrania, external morphology, tongue, and penis, based on direct observation and literature reports. Both parsimony and Bayesian analyses were used in phylogenetic reconstruction. Our analysis supports two main clades of molossids, both of which mingle Old World and New World taxa. One clade is comprised of Mormopterus, Platymops, Sauromys, Neoplatymops, Molossops, Cynomops, Cheiromeles, Molossus, and Promops. The other clade includes Tadarida, Otomops, Nyctinomops, Eumops, Chaerephon, and Mops. The position of Myopterus with respect to these two groups is unclear. As in other recent analyses, we find that several genera do not appear to be monophyletic (e.g. Tadarida, Chaerephon, and Molossops sensu lato). We recommend that the subgenera of Molossops sensu lato and Austronomus be recognized at the generic level. We conclude that much more data are needed to investigate lower level problems (generic monophyly and relationships within genera) and to resolve the higher-level branching pattern of the family.
Phylogeny of<i>Eumops</i>Miller, 1906 (Chiroptera: Molossidae) Using Morphological Data
Acta Chiropterologica, Dec 1, 2009
Mastiff bats (genus Eumops, family Molossidae) are widely distributed in the neotropics and south... more Mastiff bats (genus Eumops, family Molossidae) are widely distributed in the neotropics and southern parts of the United States, and form the most taxonomically diverse genus of the family Molossidae with 14 species and six subspecies. The taxonomyof Eumops was treated in two broad studies, and recently, minor taxonomic changes were proposed. Relationships among taxa were historically proposed based on phenetic analyses using biochemical and morphometric data, but a phylogenetic analysis of all species within the genus is lacking. This study proposes a new hypothesis of relationships among most species and subspecies using morphological data and employing cladistic methods. Morphological complexes examined include skull, dentition, tongue, and external morphology; penial data were compiled from literature. The topology of a strict consensus cladogram revealed that one clade is composed of E. perotis + E. trumbulli, and is sister to (E. bonariensis + E. delticus + E. patagonicus + E. nanus + E. hansae in an unresolved polytomy). A second clade is composed of E. underwoodi + E. dabbenei, and a third consists of E. auripendulus and E. maurus, and both are sister to each other. Eumops glaucinus occupies a separate branch in an unresolved polytomy among clades defined above or as sister to E. perotis, E. hansae and E. bonariensis-complex. Results from this study contradict the relationships proposed by previous studies which considered E. auripendulus closer to E. glaucinus, and also disagree with previous outcomes that suggested the non-monophyly of the genus. Results from this study corroborate affinities of E. dabbenei with E. underwoodi, and the uncertain monophyly of E. bonariensis as a polytypic species, supporting the specific status of E. nanus and E. delticus as recently proposed.
Revista Brasileira De Zoologia, Mar 1, 2006
O gênero Alouatta Lacépède, 1799 é considerado monofilético por muitos autores, tais como FORD (1... more O gênero Alouatta Lacépède, 1799 é considerado monofilético por muitos autores, tais como FORD (1986) e MACPHEE et al. (1995), que propuseram uma diagnose baseada em caracteres exclusivamente derivados (apomórficos). Alouatta apresenta ampla distribuição geográfica na região Neotropical, ocorrendo desde o Estado de Vera Cruz, no México, até o Estado do Rio Grande do Sul, no Brasil e Corrientes, na Argentina. Com exceção do Equador e o oeste da Colômbia, não há registro de qual-Tabela I. Principais arranjos taxonômicos para Alouatta desde meados do século XX. * Catálogo inclui apenas táxons sul-americanos; **grupos que ocorrem na América Central (excetuando A. p. aequatorialis).
Mammalia, Aug 31, 2018
The great fruit-eating bat (Artibeus lituratus) is a large-sized bat in the New World family Phyl... more The great fruit-eating bat (Artibeus lituratus) is a large-sized bat in the New World family Phyllostomidae. It is widely distributed and sometimes very abundant in different Brazilian biomes, in natural and anthropic environments. Studies in the tropics have found evidence of a decrease in A. lituratus captures during the winter, a dry and cold season with low fruit availability, especially in higher latitudes. However, the causes for the decrease in captures are poorly understood. The objective of this study was to test the influence of temperature and fruit availability on capture rates of A. lituratus in a fragmented Atlantic Forest landscape. Results indicate that temperature is the main variable that explains the changes in the number of captures of A. lituratus throughout the year, and that fruit availability plays only an adjacent role. In addition, we highlight possible negative consequences of climate change on the survival of this species.
Biodiversity and Conservation, Dec 6, 2018
Habitat loss and fragmentation typically lead to species loss and, consequently, changes in the s... more Habitat loss and fragmentation typically lead to species loss and, consequently, changes in the structure and stability of interaction networks. These changes may lead to important limitation of crucial ecosystems services such as seed dispersal. Here, we compared the spatial structure and species composition of bat-fruit interaction networks in continuous and fragmented forests based on the compilation of 14 datasets from the highly diverse and threatened Atlantic Forest sites in Brazil. As predicted, the number of bat-dispersed species was reduced in fragmented forests. Surprisingly, in both continuous and fragmented forests, bat-fruit networks were nested and modular and presented high complementary specialization. Bat species from genera Artibeus, Carollia, and Sturnira, as well as five plant genera (Cecropia, Ficus, Piper, Solanum, and Vismia) played a central role in both continuous and fragmented forests, revealing small effects of habitat loss on the phylogenetic identity of core species. These bats are considerably tolerant to habitat loss and may support seed dispersal of they preferred plants also in fragmented forests, which explains the similarities of the networks between continuous and fragmented forests. In addition, these key plants provide food resources continuously throughout the year, which facilitates the persistence of seed disperser bats year-round in the community. Although our results indicate that habitat loss had little influence on the structure of the bat-fruit interactions, we evidenced that fragmentation reduces the number of resources consumed and dispersed by bats, which may have negative impacts on forest dynamics and ecosystem functioning. Communicated by Melvin Gumal.
Mammalogy notes, Oct 2, 2022
Los murciélagos frugívoros tienen una alta capacidad de dispersión de semillas contribuyendo al e... more Los murciélagos frugívoros tienen una alta capacidad de dispersión de semillas contribuyendo al establecimiento de numerosas especies vegetales. Aquí, examinamos la dieta frugívora de los murciélagos filostómidos en el Parque Nacional Cavernas do Peruaçu, al norte de Minas Gerais, Brazil, una región de ecotonos de los biomas de Caatinga y Cerrado. Realizamos cuatro expediciones entre diciembre de 2008 y noviembre de 2009, totalizando 80 noches de muestreo, para recolectar datos y heces de murciélagos capturados. Artibeus planirostris y Carollia perspicillata proporcionaron el mayor número de muestras fecales. Se registraron cuatro familias de plantas, el mayor número para Cecropiaceae, seguida de Solanaceae; Piperaceae y Moraceae.
Zoologia, Apr 1, 2014
All content of the journal, except where identified, is licensed under a Creative Commons attribu... more All content of the journal, except where identified, is licensed under a Creative Commons attribution-type BY-NC. Eighteen species are currently recognized within Lonchophyllinae, three of which belong to the monotypic Lionycteris
Mastozoología neotropical, Jun 1, 2015
How to cite Complete issue More information about this article Journal's homepage in redalyc.org ... more How to cite Complete issue More information about this article Journal's homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative
Variacao geografica e taxonomia das especies brasileiras do genero alouatta lacepede, 1799 (primates, atelidae)
Zoonotic Bacterial Pathogens in Bats Samples Around the World: A Scoping Review
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Papers by Renato Gregorin