Ecology of the Rodents, Proechimys guyannensis trinitatis and Oryzomys capito velutinus, on Trinidad

Everard, C. O. R.; Tikasingh, Elisha S.

doi:10.2307/1379082

Cited by 30 publications

(18 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, figures as low as the suggested by Mares and colleagues (1985: 65) citing STREILEIN (1982c: 267) for Caatinga areas (only one small mammal trapped after a 29,000 trap-nights effort) can lead the reader to a wrong picture of the biome: as Streilein paper cites this value referring to only one species, and not to the entire community, the capture success presented (0.003%, and not 0.00003% as wrongly quoted in Streilein text) is not comparable to values usually presented in community studies. Moreover, in forested areas from Neotropics capture success can be as low as those found in Caatinga, as for Amazonian Forest areas in French Guyana (0.5 to 2.0% for exhaustive trapping: GUILLOTIN 1982) and Trinidad (1.3 to 3.5% for exhaustive trapping: EVERARD & TIKASINGH 1973) and Atlantic Forest areas in South of Bahia (1.5 to 5.1% for exhaustive trapping in the interior of continuous forest: R. PARDINI, unpublished doctoral thesys). Consequently, the perception that small mammal fauna in Caatinga is uniquely marked by scarcity (MARES et al 1985) probably should be reviewed.…”

Section: Discussionmentioning

confidence: 96%

“…For areas in Amazonian Forest there are records of richer communities composed of more than 12 species (e.g. Panama, 12 species: FLEMING 1971; Trinidad, 15 species: EVERARD & TIKASINGH 1973;French Guyana, 16 species: GUILLOTIN 1982). Even though, one study carried on in the Atlantic Forest has detected from 6 to 12 sympatric species (PARDINI, op.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Habitat structure and small mammals abundances in one semiarid landscape in the Brazilian Caatinga

2005

View full text Add to dashboard Cite

Studies conducted under a major project sponsored by the Brazilian Academy of Sciences in the 1970's concluded that the small mammal fauna of the semiarid Caatinga region of Brazil is impoverished and highly restricted to mesic granite outcroppings due to the lack of water conserving physiological capabilities in its species. This work focuses the abundance of small mammals in five typical Caatinga habitats. Indirect gradient analysis shows that three theoretical environmental variables explain most of the variance present in the community abundance matrix. Direct analysis of gradients show that none of these variables is highly correlated to availability of granite outcroppings. Our data also suggest that the abundances in Caatinga are not particularly low when compared to neighbor biomes and that underlying factors of habitat use by Caatinga small mammals are more complex than previously supposed.

show abstract

Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Habitat structure and small mammals abundances in one semiarid landscape in the Brazilian Caatinga

2005

View full text Add to dashboard Cite

show abstract

“…Aitken et al (1968a and1969) recorded A. longirostre during their survey of arthropods for natural virus infection and its immature stages frequently parasitized birds. Everard and Tikasingh (1973) found this tick on rodents (Oryzomys capito and Proechimys guyannensis) from Turure Forest. Smith (1974) recorded A. longirostre in Trinidad from small wild animals.…”

Section: Amblyomma Humeralementioning

confidence: 91%

“…Everard and Tikasingh (1973) found A. humerale on rodents (Oryzomys capito and Proechimys guyannensis) from Turure Forest, Trinidad. Nava et al (2007b) and Voltzit (2007) also mention the presence of A. humerale in Trinidad.…”

Section: Amblyomma Humeralementioning

confidence: 97%

“…Distribution: Brazil, Bolivia, Costa Rica, Colombia, Guatemala, Nicaragua, Panama, Venezuela, Argentina, Mexico and Paraguay (Nava et al 2007b;Voltzit 2007;Ogrzewalska et al 2009) Everard and Tikasingh (1973) and Smith (1974) recorded A. ovale from dogs. Dindial (1977) found A. ovale associated with hunting dogs at Sans Souci and Charlotteville, Trinidad.…”

Section: Amblyomma Nodosummentioning

confidence: 99%

See 1 more Smart Citation

A review on ticks (Acari: Ixodoidea: Ixodidae, Argasidae), associated pathogens and diseases of Trinidad and Tobago

Basu¹,

Basu²,

Adesiyun³

2012

Acarologia

View full text Add to dashboard Cite

GABA and opioid binding distribution in the brain of the seizure-resistantProechimys guyannensis: An autoradiography study

Rocha¹,

Arida

Carvalho

et al. 2006

Synapse

View full text Add to dashboard Cite

Proechimys guyannensis rodents present resistance to epilepsy. Autoradiography was used to map GABA(A) ((3)H-Muscimol), benzodiazepine ((3)H-Flunitrazepam), mu ((3)H-DAMGO), and delta ((3)H-DPDPE) opioid receptor binding in adult Proechimys guyannensis brain under normal conditions. Results were compared with values obtained from adult Wistar rats. Proechimys presented reduced (3)H-Muscimol binding in several cortices, thalamus, medial amygdala nucleus, and dorsal dentate gyrus. (3)H-Flunitrazepam binding was reduced in periaqueductal gray, frontal and entorhinal cortices, and enhanced in piriform cortex and ventral CA2 field of Ammons horn. Concerning (3)H-DAMGO binding, high values were found in several cortices, medial amygdala nucleus, dorsal dentate gyrus, and periaqueductal gray, whereas reduced binding was detected in anterior olfactory tubercle, cingulated cortex, thalamus, basolateral amygdala, substantia nigra, and dorsal and ventral CA fields. High (3)H-DPDPE binding was noticed in CA1 field from dorsal hippocampus, while reduced values were found in cingulate cortex, olfactory tubercle, thalamus, and substantia nigra. These findings provide the first description of receptor binding distribution of the Proechimys brain and suggest natural endogenous anticonvulsant mechanisms of theses rodents under normal conditions.

show abstract

Ecology of the Rodents, Proechimys guyannensis trinitatis and Oryzomys capito velutinus, on Trinidad

Cited by 30 publications

References 7 publications

Habitat structure and small mammals abundances in one semiarid landscape in the Brazilian Caatinga

Habitat structure and small mammals abundances in one semiarid landscape in the Brazilian Caatinga

A review on ticks (Acari: Ixodoidea: Ixodidae, Argasidae), associated pathogens and diseases of Trinidad and Tobago

GABA and opioid binding distribution in the brain of the seizure-resistantProechimys guyannensis: An autoradiography study

Contact Info

Product

Resources

About