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1.
Acta biol. colomb ; 27(1): 127-130, ene.-abr. 2022. tab, graf
Article in English | LILACS-Express | LILACS | ID: biblio-1360057

ABSTRACT

ABSTRACT Cerradomys goytaca is a cricetid rodent endemic to "Restinga" formations from southeastern Atlantic Forest. It is known from only five localities, and it is considered endangered of extinction. Herein, we furnish new data on C. goytaca from an additional locality in Rio de Janeiro state. The present record provides new data on habitat and represents the westernmost geographic limit of this poorly known species.


RESUMEN Cerradomys goytaca es un roedor cricetideo endémico de las formaciones de Restinga del sureste de la Selva Atlantica. Es conocido solo en cinco localidades, y se considera en peligro de extinción. Aquí, proporcionamos nuevos datos sobre C. goytaca de una localidad adicional en el estado de Río de Janeiro. El presente registro proporciona nuevos datos del hábitat y representa el límite geográfico más occidental de esta especie poco conocida.

2.
Acta amaz ; 50(4): 309-312, out. - dez. 2020.
Article in English | LILACS | ID: biblio-1146367

ABSTRACT

Monodelphis glirina é endêmica da Amazônia e aspectos dos seus hábitos de vida e história natural são pouco conhecidos. Dados sobre a espécie foram coletados no norte de Mato Grosso, Brasil, incluindo observações sobre seu comportamento e simpatria com congêneres. Durante 10 expedições e com um esforço de 3.680 baldes-dia, foram capturados 29 M. glirina, três M. sacie um M. emiliae. Adultos representaram 82,8% das capturas de M. glirina e a razão sexual foi três machos para cada fêmea. A captura de jovens e fêmeas lactantes foi sazonal, uma vez que ambos foram capturados apenas na estação chuvosa. Observamos três eventos de M. glirina predando roedores em pitfall traps, todos com o mesmo comportamento de alimentação. Também registramos um individuo escalando uma árvore durante a noite, incluindo um video. Nosso trabalho contribui para uma melhor compreensão da ecologia desse gênero altamente diversificado e ainda pouco conhecido. (AU)


Subject(s)
Biology , Amazonian Ecosystem , Monodelphis
3.
Acta sci., Biol. sci ; 42: e49958, fev. 2020. map, tab, ilus, graf
Article in English | LILACS, VETINDEX | ID: biblio-1460952

ABSTRACT

Less than 10% of the original Atlantic Forest cover now remains standing in the Brazilian state of Sergipe, although few scientific studies have focused on its mammalian diversity. The present study describes the diversity of non-volant mammals found in the Ibura National Forest (INF), based on live trapping, and direct and indirect observations. We sampled the IBF on six days per month between June 2012 and August 2013, using live-traps (Sherman-type) positioned in pairs (ground and understory). We equally sampled semideciduous forest and an abandoned Eucalyptusplantation with dense understory (over 30 years). We also used non-systematics methods (direct observations, vestiges, camera-trap, and opportunistic captures). We recorded 18 species, from 12 families and 7 orders considering all the applied methods. Among recorded species, Bradypus torquatusand Lontra longicaudisare considered threatened of extinction. Considering only the live-trapping (totaling 3,240 trapping nights), we captured 125 individuals (3.85% success) from four species, Marmosa demerarae(52%), Didelphis albiventris(19.2%), Cerradomys vivoi(15.2%), and M. murina(13.6%). Estimated and observed richness was the same, suggesting a satisfactory effort. Didelphis albiventrisand M. demeraraeshowed significantly higher captures in the dry seasons. Didelphis albiventrisand C.vivoishowed significantly higher captures in the substratum, and M. demeraraehigher in the understory. Cerradomysvivoishowed significantly higher captures in the Eucalyptusphytophysiognomy. Non-Metric Multidimensional Scaling and the ANOSIM showed a significant difference in the captured species among semidecidual forest and Eucalyptus. Despite the small area (144 ha), the INF still houses a relatively high mammalian diversity. Further investigations may help to understand the role of habitat reduction in the diversity and habitat partitioning among mammal species in the Atlantic Forest of Northeastern Brazil.


Subject(s)
Animals , Biodiversity , Ecosystem , Mammals/anatomy & histology , Protected Areas/analysis
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