Research Note

Related GMR Articles

05/31/2011
Conservation; Genetic diversity; Microsatellites; Pelodiscus sinensis

Twenty-one novel polymorphic microsatellite loci were isolated from the Chinese soft-shelled turtle, Pelodiscus sinensis (Trionychidae). This is a commonly consumed Asian species, especially in China, where it is reared in large numbers on farms. We screened 34 unrelated individuals from Wuhu of Anhui province in China and detected high levels of polymorphism for all 21 loci, ... more

X.J. Bu; L. Liu; L. Wang; L.W. Nie
05/24/2011
AMOVA; Conservation; Endemism; Genetic diversity; Molecular markers

The bristle-spined porcupine, Chaetomys subspinosus, an endemic rodent from Atlantic Forest, was considered to be abundant in the recent past, but population reductions due to habitat loss and expansion of human activities caused this species to be included in the “vulnerable” category of the World Conservation Union Red List. We performed the first genetic assessment in natural ... more

C.G. Oliveira; R.A. Martinez; G.A.F. Giné; D.M. Faria; F.A. Gaiotto
09/10/2013
Conservation; Genetic diversity; Meliponini tribe; Microsatellite markers; Pollinators; Recôncavo Baiano

Bees play a key role in pollination and thereby help maintain plant diversity. The stingless bee Melipona scutellaris is an important pollinator in northeastern Brazil because it is endemic to this region. Both deforestation and timber harvesting have reduced the nesting sites for this species, thus reducing its population and range. Genetic studies may help reverse this process ... more

J.L. Viana; A.K. Francisco; C.A.L. Carvalho; A.M. Waldschmidt
06/13/2013
Bromeliaceae; Conservation; Endemism; Genetic diversity; Vriesea cacuminis

Data about the genetic structure can help to understand the evolutionary process of natural populations as well as to drive strategies of conservation. Vriesea cacuminis, an endemic Brazilian Bromeliad, has been found in 2 areas of Minas Gerais State. One is a legal preservation unit (Ibitipoca State Park) and the other an unprotected area (Serra Negra). The 2 areas belong to the ... more

P.C.C. Ribeiro; L.C. Pinheiro; R. Domingues; R.C. Forzza; M.A. Machado; L.F. Viccini
09/26/2012
Cerrado; Chiroptera; Conservation; Genetic diversity; Neotropical bat; Shotgun genomic library

Glossophaga soricina is a widespread Neotropical nectarivorous bat. We characterized 10 microsatellite loci isolated from a shotgun genomic library. We analyzed tissues from wing membrane of 67 individuals collected from two populations of Central Brazil (Brasília and Alto Paraíso). The number of alleles per locus ranged from 2 to 20, and the observed and expected ... more

M. Oprea; F.P. Peixoto; L.V. Resende; R.G. Collevatti; M.P.C. Telles
03/15/2007
Acridine orange test; Bovine; Conservation; DNA; Freeze-drying sperm; TUNEL

The ability to detect nuclear damage is an important tool for the development of sperm preservation methods. We used the acridine orange test (AOT) and the terminal deoxynucleotidyl transferase-mediated dUDP nick-end labeling (TUNEL) assay to assess the DNA status of sperm cells preserved with different lyophilization media. The AOT did not detect any differences between different ... more

C.F. Martins; M.N. Dode; S.N. Báo; R. Rumpf
12/01/2006
Amazon; Brachyplatystoma; Conservation; Fish homing; Phylogeography; Siluriformes

The large pimelodid, Brachyplatystoma rousseauxii, is one of the two most important catfish species for the fisheries in the Amazon. It is captured by commercial and artisanal fishing fleets in at least five Amazonian countries, at fishing grounds more than 5000 km apart. Current evidence suggests a complex life cycle that includes the longest reproductive migration known for a ... more

J.S. Batista; J.A. Alves-Gomes
02/25/2009
Conservation; Geometric morphometry; Meliponini; Sex differentiation; species identification; Wing morphometry

Currently, the identification of pollinators is a critical necessity of conservation programs. After it was found that features extracted from patterns of wing venation are sufficient to discriminate among insect species, various studies have focused on this structure. We examined wing venation patterns of males and workers of five stingless bee species in order to determine if there are ... more

T.M. Francoy; R.A.O. Silva; P. Nunes-Silva; C. Menezes; V.L. Imperatriz-Fonseca
12/16/2008
Conservation; Endangered species; Mitochondrial DNA; Oryx; Phylogenetic relationship

The present study reports the application of mitochondrial markers for the molecular phylogeny of Oryx species, including the Arabian oryx (AO), scimitar-horned oryx (SHO) and plains oryx (PO), using the Addax as an outgroup. Sequences of three molecular markers, 16S rRNA, cytochrome b and a control region, for the above four taxa were aligned and the topologies of respective ... more

H.A. Khan; I.A. Arif; A.A.Al Homaidan; A.H.Al Farhan
09/09/2008
Amazona aestiva; bottleneck; Conservation; Genetic structure; Microsatellite

The blue-fronted Amazon (Amazona aestiva) is a widely distributed Neotropical parrot and one of the most captured parrots in nature to supply the illegal trade of wild animals. The objectives of the present study were to analyze the genetic structure of A. aestiva to identify management units and support conservation planning and to verified if A. aestiva populations ... more

K.C.E. Leite; G.H.F. Seixas; I. Berkunsky; R.G. Collevatti; R. Caparroz

Pages