
Authors: C.S. Nascimento, M.A. Machado, S.E.F. Guimar�£es, M.F.M. Guimar�£es, J.O. Peixoto, J. Furlong, M.C.A. Prata, R.S. Verneque, R.L. Teodoro and P.S. Lopes
The bovine tick Rhipicephalus (Boophilus) microplus causes major losses in cattle production systems in tropical regions. Bos indicus breeds are more resistant to ticks than B. taurus breeds. Resistance genes could be an alternative to control this parasite. We examined the pattern of gene expression of three calcium-binding-p.. Read More»
Authors: D.R. Ayres, F.R.P. Souza, M.E.Z. Mercadante, L.F.S. Fonseca, H. Tonhati, J.N.S.G. Cyrillo, S.F.M. Bonilha and L.G. Albuquerque
We analyzed the polymorphisms TFAM HaeIII, TFAM MboI and FABP4 MspA1I in three Nellore lines selected for growth in order to evaluate how selection affects the frequencies of these polymorphisms and evaluate their association with growth and carcass traits in Zebu cattle. Birth, weaning and yearling weights, rump height, longi.. Read More»
Authors: G.-F. Wu, Y.-L. Hou, W.-R. Hou, Y. Song and T. Zhang
RPS14 is a component of the 40S ribosomal subunit encoded by the RPS14 gene and is required for its maturation. The cDNA and the genomic sequence of RPS14 were cloned successfully from the giant panda (Ailuropoda melanoleuca) using RT-PCR technology and touchdown-PCR, respectively; they were both sequenced and analyzed. The le.. Read More»
Authors: G.B. Veneroni, S.L. Meirelles, D.A. Grossi, G. Gasparin, A.M.G. Ibelli, P.C. Tizioto, H.N. Oliveira, M.M. Alencar and L.C.A. Regitano
Canchim is a composite cattle breed developed in Brazil for beef production. One of the breeding objectives is to increase fat deposition. QTLs for fat thickness and/or marbling have been reported on BTA4 and BTA14. The IGFBP3 and DDEF1 genes, mapped to BTA4 and BTA14, respectively, affect adipogenesis. We looked for SNPs in t.. Read More»
Authors: E.C. Reis, R.M. Aires, J.F. Moura, C.A.R. Matias, M. Tavares, P.H. Ott, S. Siciliano and G. L�´bo-Hajdu
There have been few studies on Magellanic penguins (Spheniscus magellanicus). In 2008, these penguins washed ashore along the Brazilian coast in unusually high numbers, some reaching as far as northeast Brazil. As Magellanic penguins show little sexual dimorphism, sex determination by morphological features is not accurate. He.. Read More»
Authors: B.S. Vaz, G.M. Cerqueira, J.C. Silva, V.H.B. Manzke, C.G.A. Moreira and H.L.M. Moreira
Rhamdia quelen is an important Neotropical catfish species for fisheries and aquaculture in southern Brazil, where it is called Jandia. Like other native Brazilian species of economic importance, R. quelen genetics needs more attention for animal breeding programs. The growth hormone gene is known to be linked to a number of m.. Read More»
Authors: T.L. Silva, M.I.A. Silva, L.P.R. Venancio, C.E.S. Zago, V.A.G. Moscheta, A.V.B. Lima, L.D. Vizotto, J.R. Santos, C.R. Bonini-Domingos and M.T.V. Azeredo-Oliveira
We developed and optimized a simple, efficient and inexpensive method for in vitro culture of peripheral blood lymphocytes from the Brazilian tortoise Chelonoidis carbonaria (Testudinidae), testing various parameters, including culture medium, mitogen concentration, mitotic index, culture volume, incubation time, and mitotic a.. Read More»
Authors: R.O. Brito, P.R.A.M. Affonso and J.C. Silva Jr.
The order Thysanoptera is composed of cosmopolitan phytophagous and predaceous insects with diverse life histories, behaviors and habits. This order is currently thought to form a trichotomy with Hemiptera and Psocodea; Hemiptera and Thysanoptera are considered to be sister groups. The interrelationships within Thysanoptera re.. Read More»
Authors: L.M. Santos, R.A. Gama, A.E. Eiras and C.G. Fonseca
Anopheles darlingi is the most important malaria vector in Central and South America. After a dramatic reduction of malaria cases in the whole Brazilian territory, with the lowest abundance being attained by 1970, the disease resurged in the Amazon region, where it is now a great public health concern. Consequently, better kno.. Read More»
Authors: Y. Zhu, H.-S. Wang, X.-M. Li and Z.-W. Wang
This study established an animal model of coronary artery bypass graft (CABG) surgery. The human endothelial nitric oxide synthase (eNOS) gene was transfected into grafted arterial walls to verify transfection efficiency. Forty rabbits were randomized into the following 4 equal groups: 1) eNOS gene transfection group (eNOS group); 2) empty eNOS gene trans.. Read More»