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Related GMR Articles

09/30/2007
Conservation; Leguminosae; Molecular variation; Polymerase chain reaction

Dalbergia nigra (rosewood) is a long-lived leguminous species, which is endemic to the Brazilian Atlantic forest. Because of the high economic value of its wood, this species has been over-explored in recent years. Currently, rosewood is included in the IUCN Red List as vulnerable. We examined the genetic diversity of 87 specimens of D. nigra sampled from a continuous ... more

F.S. Juchum; J.B. Leal; L.M. Santos; M.P. Almeida; D. Ahnert; R.X. Corrêa
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
11/22/2011
bees; Conservation; Melipona; Microsatellite; Transferability

Microsatellite markers are a useful tool for ecological monitoring of natural and managed populations. A technical limitation is the necessity for investment in the development of primers. Heterologous primers can provide an alternative to searching for new loci. In bees, these markers have been used in populational and intracolonial genetic analyses. The genus Melipona has the ... more

M.V.C. Viana; E.A. Miranda; A.K. de Francisco; C.A.L. Carvalho; A.M. Waldschmidt
11/22/2011
Anomuran crab; Conservation; Cryptic species; Heteroduplex assay; Population genetic structure

Species with a broad distribution rarely have the same genetic make-up throughout their entire range. In some cases, they may constitute a cryptic complex consisting of a few species, each with a narrow distribution, instead of a single-, widely distributed species. These differences can have profound impacts for biodiversity conservation planning. The genetic differentiation of four ... more

M.L. Bartholomei-Santos; P.A. Roratto; S. Santos
12/08/2011
Chinese indigenous buffalo; Conservation; Hybrid offspring; Microsatellite

Chinese native buffaloes have faced the threat of extinction, along with an increase in crossbreeding with domesticated river buffaloes; consequently, conservation of local buffalo genetic resources has become a priority. A Chinese native breed, Jianghan, is often crossed intentionally and unintentionally with imported breeds from India and Pakistan, Murrah, and Nili-Ravi. A total of 128 ... more

W.C. Yang; K.Q. Tang; J. Mei; W.B. Zeng; L.G. Yang
07/25/2011
Coilia mystus; Conservation; Microsatellite; PIMA; RAPD-PCR enrichment

Coilia mystus is the most important harvested fish species in China; it inhabits quite different water environments during the different life history stages. Populations of C. mystus have dropped sharply due to overharvesting and water pollution. We developed eight microsatellite loci in C. mystus for conservation genetics studies. These new markers were tested ... more

J.Q. Yang; X.D. Zhou; D. Liu; Z.Z. Liu; W.Q. Tang

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