Diet composition of<i>Gracilinanus agilis</i>(Didelphimorphia, Didelphidae) in dry woodland areas of Cerrado in central Brazil

Bocchiglieri, Adriana; Mendonça, André Faria; Campos, Juliana Bragança

doi:10.1515/mamm.2010.019

Cited by 20 publications

(13 citation statements)

References 2 publications

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“…For this reason, the insectivorous-omnivorous alimentary habits of certain mammals such as the marsupial G. agilis may facilitate infection by spirurid nematodes (Bocchiglieri et al, 2010). This finding was corroborated by our previous studies that showed a high prevalence of spirurids in G. agilis from the Pantanal region in Brazil, most likely due to their arboreal and insectivorous diet (Lopes Torres et al, 2009).…”

Section: Introductionsupporting

confidence: 76%

Redescription of Spirura guianensis (Nematoda: Spiruridae) from a rare South American Gracile Opossum

et al. 2015

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Spirura genus Blanchard, 1849 comprise of nematode parasites that infect primate and marsupial species. Although several taxonomical studies have shown that the infection by this species occurs primarily in the esophagus of primates, evidence for the occurrence of these parasites in other hosts (marsupials, rodents and bats) has become the subject of investigation by several groups. In this work, we describe the presence of Spirura guianensis Ortlepp, 1924 in the marsupial Gracilinanus agilis (Marsupialia: Didelphidae) found in the Pantanal of Mato Grosso do Sul state of Brazil. Structural characteristics of this nematode were identified using light microscopy (bright field and fluorescence stereomicroscopy) and scanning electron microscopy (SEM) approaches. Details of the surface topography such as cephalic projections, ventral boss, details of the caudal papillae and cuticular ornamentations were shown, providing taxonomic characteristics that may help in the establishment of diagnostic protocols. In addition, the presence of this species in a new host and new geographical area of Brazil provide grounds for a revision on the distribution of S. guianensis in South America.

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Section: Introductionsupporting

confidence: 76%

Redescription of Spirura guianensis (Nematoda: Spiruridae) from a rare South American Gracile Opossum

et al. 2015

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“…Da mesma forma, se consideramos a polpa e fi bras derivadas dos frutos de Melastomataceae, cuja coloração é tipicamente azul-arroxeada, a freqüência de consumo para esta família aumenta para cerca de 82%. Esses são os maiores valores encontrados para freqüência no consumo de frutos não só para a espécie G. agilis, como também para esse gênero de marsupial (ver Martins et al 2006;Lessa & Costa 2009;Bocchiglieri et al 2010). Nossos dados parecem estar mais de acordo com os estudos realizados por Astúa de Moraes et al Em relação aos frutos consumidos por G. agilis, verificamos que esse marsupial consome basicamente frutos de plantas pioneiras, as quais estiveram presentes em 84,4% das fezes que continham sementes.…”

Section: Discussionunclassified

Frugivoria e potencial dispersão de sementes pelo marsupial Gracilinanus agilis (Didelphidae: Didelphimorphia) em áreas de Cerrado no Brasil central

et al. 2011

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(Frugivory and potential seed dispersal by the marsupial Gracilinanus agilis (Didelphidae: Didelphimorphia) in areas of Cerrado in central Brazil). In the present study, we investigated patterns of fruit consumption and viability of seeds consumed by the marsupial Gracilinanus agilis (Burmeister, 1854) in four cerrado sites in central Brazil. Faecal analysis indicated that this mammal feeds on seeds of pioneer plant species of Melastomataceae (Miconia albicans (Sw.) Triana, M. cuspidata Naudin, M. ferruginata DC., M. pepericarpa DC., M. pohliana Cogn. and Ossaea congestifl ora (Naudin) Cogn.), Solanaceae (one unidentifi ed species), and Viscaceae (Phoradendron perrottetii (DC.) Eichler, mistletoe). We recorded the highest reported rate of fruit consumption for Gracilinanus, with about 45% of the scats containing seeds and 86% containing items derived from fruits (N = 422). With the exception of O. congestifl ora, the remaining seed species tested did not suff er negative eff ects on germination rates aft er passing through the marsupial guts. Th e analysis of intraspecifi c variation in the total number of Miconia seeds found in scats indicated that females defecate a signifi cantly greater number of seeds (mean±EP = 21.7±3.8) than males (14.4±3.0) (F = 26.32; P < 0.0001). Th e factor season was also signifi cant (F=452.22; P<0.0001) as well as the interaction between sex and season (F=30.10; P < 0.0001). Both females and males increased their fruit consumption in the dry season, but in the rainy season females had more seeds than males in their faeces. Later during this season, we observed a higher number of Miconia seeds defecated by reproductive females (24.7±6.6) compared to non-reproductive females (12.9±2.8) (P = 0.031). Our results indicate that G. agilis feeds selectively on Melastomataceae, which suggests these plants play an important role in the diet of this marsupial in relation to energy and water demands, especially during the dry-cool season.

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“…Abundance peaks were detected in April 2010 (wet season), including the record of early reproductive onset that would be related to the production of more than one litter in the favorable season of the year and had already been observed for D. albiventris in another biome (Astúa and Geise 2006). Gracilinanus agilis is a small arboreal marsupial, often associated with forested habitats, and with an insectivorous/omnivorous diet (Bocchiglieri et al 2010;Reis et al 2011). Apparently there are no Delciellos | Mammals of Caatinga previous studies about its population dynamics in other areas of Caatinga.…”

Section: Discussionmentioning

confidence: 99%

Mammals of four Caatinga areas in northeastern Brazil: inventory, species biology, and community structure

Delciellos¹

2016

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Studies on population dynamics and community structure for mammals from the semi-arid Caatinga biome are very scarce. I surveyed non-volant mammals in four sites in the Caatinga of Northeastern Brazil. Herein, 24 species belonging to eight orders are recorded. A total of 165 individuals of five species of small mammals were captured in a 4-year capture-recapture study. Capture success and relative richness were low and not correlated with precipitation and temperature. The present study contributes to the knowledge of species biology and ecology in sites geographically close to priority areas for conservation in this biome.

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Diet composition ofGracilinanus agilis(Didelphimorphia, Didelphidae) in dry woodland areas of Cerrado in central Brazil

Abstract: No abstract available

Cited by 20 publications

References 2 publications

Redescription of Spirura guianensis (Nematoda: Spiruridae) from a rare South American Gracile Opossum

Redescription of Spirura guianensis (Nematoda: Spiruridae) from a rare South American Gracile Opossum

Frugivoria e potencial dispersão de sementes pelo marsupial Gracilinanus agilis (Didelphidae: Didelphimorphia) em áreas de Cerrado no Brasil central

Mammals of four Caatinga areas in northeastern Brazil: inventory, species biology, and community structure

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