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Animal Genetics   Research Article

Macromolecular array patterns of silk gland secretion in social Hymenoptera larvae

Authors: Guilherme Gomes, Elaine C.M. Silva-Zacarin, Fernando J. Zara, Regina L.M. Silva de Moraes and Flávio H. Caetano

The cocoon, produced by most holometabolous insects, is built with silk that is usually produced by the larval salivary gland. Although this silk has been widely studied in the Lepidoptera, its composition and macromolecular arrangement remains unknown in the Hymenoptera. The macromolecular array patterns of the silk in the la.. Read More»

Genet. Mol. Res. 3(3):
Animal Genetics   Research Article

Age-of-dam adjustment factors for birth and weaning weight records of beef cattle: a review

Authors: Janice M. Rumph, L. Dale Van Vleck

Age-of-dam adjustment factors are used to preadjust birth and weaning weight data for national beef cattle genetic evaluations. Adjustments are used in order to make the means of the different age-of-dam subclasses similar so that a fair comparison of animals can be performed. A review was made of various research studies that.. Read More»

Genet. Mol. Res. 3(1):
Animal Genetics   Research Article

Behavioral genetics of Drosophila ananassae

Authors: Shree Ram Singh, Bashisth N. Singh

Drosophila ananassae has a unique status among Drosophila species because of certain peculiarities in its genetic behavior. The most unusual feature of this species is its relatively high frequency of spontaneous male recombination. The results of studies on non-sexual behavior, such as phototactic responses, eclosion rhythm, .. Read More»

Genet. Mol. Res. 2(4):
Animal Genetics   Research Article

Gene flow between cassava, Manihot esculenta Crantz, and wild relatives

Authors: N.M.A. Nassar

Controlled and natural hybridization between cassava and wild relatives does occur. Barriers within the genus appear to be weak due to recent evolution of the group. All Manihot species examined cytogenetically have a chromosome number of 2n = 36. However, they behave meiotically as diploids. The weak interspecific barriers ha.. Read More»

Genet. Mol. Res. 2(4):
Animal Genetics   Research Article

Is the number of antennal plate organs (sensilla placodea) greater in hygienic than in non-hygienic Africanized honey bees?

Authors: Kátia Peres Gramacho, Lionel Segui Gonçalves, Antônio Carlos Stort, Adriana Backx Noronha

Hygienic behavior is a desirable trait in honey bees (Apis mellifera L.), as hygienic bees quickly remove diseased brood, interrupting the infectious cycle. Hygienic lines of honey bees appear to be more sensitive to the odors of dead and diseased honey bee brood, and Africanized honey bees are generally more hygienic than are.. Read More»

Genet. Mol. Res. 2(3):
Animal Genetics   Research Article

Effects of crude extracts of Agaricus blazei on DNA damage and on rat liver carcinogenesis induced by diethylnitrosamine

Authors: Luís Fernando Barbisan, Clarissa Scolastici, Maristela Miyamoto, Daisy Maria Favero Salvadori, Lúcia Regina Ribeiro, Augusto Ferreira da Eira, João Lauro Viana de Camargo

The effects of crude extracts of the mushroom Agaricus blazei Murrill (Agaricaceae) on both DNA damage and placental form glutathione S-transferase (GST-P)-positive liver foci induced by diethylnitrosamine (DEN) were investigated. Six groups of adult male Wistar rats were used. For two weeks, animals of groups 3 to 6 were trea.. Read More»

Genet. Mol. Res. 2(3):
Animal Genetics   Research Article

Relationships of weight and height with age in hybrid Holstein-Friesian/Guzera females

Authors: F.E. Madalena, R.L. Teodoro, A.P. Madureira

Serial data on live weights, height at withers and the weight/height ratio of 263 cows (3 to 9 years old) and 196 heifers (2 to 5 years old) were studied. The animals were of six red and white Holstein-Friesian (HF)/Guzera crosses (1/4, 1/2, 5/8, 3/4, 7/8 and ≥31/32 HF-expected gene fraction). Separate analyses were perform.. Read More»

Genet. Mol. Res. 2(3):
Animal Genetics   Research Article

Comparing data on the reproduction of Varroa destructor

Authors: Maria H. Corrêa-Marques, Luis Medina Medina, Stephen J. Martin, D. De Jong

Varroa destructor reproductive success is considered an important character for determining the resistance of honey bees to this mite parasite. However, most of the published data are not comparable due to the different methods of ascertaining and reporting reproduction. A recently published technique that involves reconstruct.. Read More»

Genet. Mol. Res. 2(1):
Animal Genetics   Research Article

Growth hormone mRNA expression in the pituitary of Bos indicus and Bos taurus x Bos indicus crossbred young bulls treated with recombinant bovine somatotropin

Authors: S.M.Z. Di Mauro, L.R. Furlan, M.I.T. Ferro, M. Macari andJ.A. Ferro

The effects of breed and of recombinant bovine somatotropin (rbST) treatment on growth hormone gene expression were studied in young bulls. The experiment was completely randomized in a [2 x 2]-factorial arrangement, using two levels of rbST (0 or 250 mg/animal/14 days), and two breed groups (Nelore and Simmental x Nelore cros.. Read More»

Genet. Mol. Res. 1(4):
Animal Genetics   Research Article

New genomic resources for the honey bee(Apis mellifera L.): development of a deep-coverage BAC library and a preliminary STC database

Authors: J.P. Tomkins, M. Luo, G.C. Fang1, D. Main1, J.L. Goicoechea,M. Atkins, D.A. Frisch, R.E. Page, E. Guzmán-Novoa5, Y. Yu,G. Hunt6 and R.A. Wing

We have constructed a bacterial artificial chromosome (BAC) library for a European honey bee strain using the cloning enzyme HindIII in order to develop resources for structural genomics research. The library contains 36,864 clones (ninety-six 384-well plates). A random sampling of 247 clones indicated an average insert size o.. Read More»

Genet. Mol. Res. 1(4):