Ten New Genera of Oryzomyine Rodents (Cricetidae: Sigmodontinae)

Weksler, Marcelo; Percequillo, Alexandre Reis; Voss, Robert S.

doi:10.1206/0003-0082(2006)3537[1:tngoor]2.0.co;2

Cited by 203 publications

(236 citation statements)

References 3 publications

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“…All these species present different karyotypes, which may be derived from one another by a small number of chromosome arrangements (Bonvicino et al, 1999). Recently Weksler et al (2006) reviewed the genus Oryzomys, and concluded that these species belong to another genus (Cerradomys). The cytotype analyzed here shows a 2n = 50 and NA = 64, an undescribed species distributed in Bahia and Minas Gerais States.…”

Section: Cerradomys Spmentioning

confidence: 99%

Karyotype composition of some rodents and marsupials from Chapada Diamantina (Bahia, Brasil)

Geise

2007

Braz. J. Biol.

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The Chapada Diamantina (CD) is located in Bahia State, between 11-14° S and 41-43° W, being part of the Serra do Espinhaço. The occurrence of different habitats and transition areas permits an interesting mammal fauna composition, with species from different biomes living in sympatry. Species of Didelphimorphia and Rodentia are important members of mammal communities in almost all different habitats, and morphological and cytogenetic characters are important for a correct identification of most of these species. In this work 258 specimens of small mammals from the orders Didelphimorphia (six genera and six species) and Rodentia (two families, five Sigmodontinae tribes, nine genera and 11 species) were collected during the whole field work (44 nights

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Section: Cerradomys Spmentioning

confidence: 99%

Karyotype composition of some rodents and marsupials from Chapada Diamantina (Bahia, Brasil)

Geise

2007

Braz. J. Biol.

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“…acumulando, recentemente, novas revisões e descrições de espécies (Emmons & Patton, 2005;Weksler, 2006;Weksler et al, 2006, Percequillo et al, 2008Carleton & Arroyo-Cabrales, 2009;Paresque, 2010).…”

unclassified

Anatomia comparada e morfometria de oligoryzomys nigripes e o. flavescens (rodentia, sigmodontinae) no Rio Grande do Sul, Brasil

Machado¹,

Paresque²,

Christoff³

2011

Pap. Avulsos Zool. (São Paulo)

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“…The genus Hylaeamys is distributed from Venezuela and Guianas southward throughout Amazonia and the Atlantic rainforest to Paraguay and northern Argentina (Weksler et al 2006). Hylaeamys perenensis is distributed from eastern Peru, central and southern-east Colombia, eastern Ecuador, eastern Bolivia and western-central Brazil, while H. yunganus is established from the Guianas and South of Venezuela to central Brazil, including central Colombia, eastern Ecuador, eastern Peru and northern Bolivia (Wilson & Reeder 2005).…”

Section: Resultsmentioning

confidence: 99%

“…Didelphimorphia and Rodentia were identified from several sources and taxonomic classification was made following Wilson & Reeder (2005), except in Sigmodontinae: Oryzomyini where Weksler et al (2006) was followed.…”

Section: Methodsmentioning

confidence: 99%

The parasitism of Ixodes luciae (Acari: Ixodidae) on marsupials and rodents in Peruvian Amazon

2009

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In this work the infestation with I. luciae on Didelphimorphia and Rodentia in different environments of Peruvian Amazon was studied. Didelphimorphia was represented by the family Didelphidae. Specimens belonging to Caluromys lanatus, Didelphis marsupialis, Marmosops sp.2, Metachirus nudicaudatus, Philander andersoni and Philander opossum were infested with adults I. luciae and one Micoureus sp. was infested with larvae. In Rodentia, the infestation with I. luciae nymphs was restricted to Hylaeamys perenensis, Hylaeamys yunganus and Oligoryzomys microtis, while one Oecomys bicolor (all Cricetidae) was infested with larvae of this species. The few larvae were found on rodents captured in primary forest. The only significant difference (P < 0.05) in prevalence of adult ticks on Didelphimorphia was between P. andersoni and M. nudicaudatus (chisquare distribution). Adult tick distribution was significant different in P. andersoni in comparison with M. nudicaudatus, P. opossum and D. marsupialis (Kruskal-Wallis test). No significant effect of month or environment was detected in relation to adult tick infestation on Didelphimorphia. The prevalence of nymphal infestation as well as tick distribution showed that H. perenensis and H. yunganus were significantly more prone to be infested with nymphs of I. luciae than O. microtis. Prevalence of nymph infestation was higher in primary and secondary forest than rural areas while abundance was higher in secondary forest when compared with rural areas (P < 0.05). Kruskal-Wallis test showed differences (P < 0.05) for nymphal infestation during December in relation to January, March, April and June. The natural cycle of I. luciae appeared to be continuous, bound to adult tick infestation on Philander and nymphal infestation on Hylaeamys in forested environs. bicolor (todos Cricetidae) esteve infestado por larvas de I. luciae. As poucas larvas foram encontradas em roedores capturados na floresta primária. A única diferença significante (P < 0.05) na prevalência de carrapatos adultos em Didelphimorphia foi entre P. andersoni e M. nudicaudatus (distribuição chi-quadrado). A distribuição de carrapatos adultos foi significativamente diferente em P. andersoni quando comparado com M. nudicaudatus, P. opossum e D. marsupialis (teste Kruskal-Wallis). Nenhum efeito significante do mês ou ambiente foi observado em relação à infestação por carrapato adulto em Didelphimorphia. Tanto a prevalência de infestações por ninfas, como a distribuição do carrapato indicaram que H. perenensis e H. yunganus estiveram mais propensos a estarem infestados por ninfas de I. luciae do que O. microtis. A prevalência de infestações por ninfas foi maior em florestas primária e secundária do que em áreas rurais, enquanto que a abundância foi maior em floresta secundária, quando comparada com áreas rurais (P < 0.05). O teste Kruskal-Wallis indicou diferenças (P < 0.05) para infestações por ninfas durante Dezembro, em relação a Janeiro, Março, Abril e Junho. O ciclo natural de I. luciae parece ser continu...

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Ten New Genera of Oryzomyine Rodents (Cricetidae: Sigmodontinae)

Cited by 203 publications

References 3 publications

Karyotype composition of some rodents and marsupials from Chapada Diamantina (Bahia, Brasil)

Karyotype composition of some rodents and marsupials from Chapada Diamantina (Bahia, Brasil)

Anatomia comparada e morfometria de oligoryzomys nigripes e o. flavescens (rodentia, sigmodontinae) no Rio Grande do Sul, Brasil

The parasitism of Ixodes luciae (Acari: Ixodidae) on marsupials and rodents in Peruvian Amazon

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