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Mitotic and meiotic chromosomes of a southern Brazilian population of Boophilus microplus (Acari, Ixodidae) Iheringia, Sér. Zool.
Garcia,Rosane Nunes; Garcia-Fernandez,Casemiro; Garcia,Sonia Maria Lauer; Valente,Vera Lúcia S..
Using conventional staining with acetic orcein and C-banding techniques it was investigated constitutive heterochromatin chromosomal polymorphisms and the mitotic and the meiotic behavior of male and female chromosomes of Boophilus microplus (Canestrini, 1887). Some differences were detected in the population of southern Brazil as compared to the data of other authors for populations in other latitudes. The differences being mainly concerned with the distribution of constitutive centromeric heterochromatin and variation in the length of heterochromatic blocks in the pericentromeric regions of some chromosome pairs.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Arachnida; Acari; Chromosomes; C-banding; Boophilus.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212002000100004
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New histochemical and morphological findings in the female genital tract of Boophilus microplus (Acari, Ixodidae): an attempt toward the elucidation of fertilization in ticks Iheringia, Sér. Zool.
García-Fernández,Casimiro; Garcia,Sonia M. Lauer; Garcia,Rosane Nunes; Valente,Vera L. da Silva.
At present not only is the site of fertilization in ticks still unknown but it is also unclear as to how this mystery can be solved. Signs of fertilization can be observed throughout the female genital tract and these can be clues for the elucidation of the unsolved questions relating to ticks fertilization. In Boophilus microplus (Canestrini, 1887) the most important signs are the following: the final eversion of the acrosomal canal in females ready for oviposition; the presence of small tubules, resembling the subplasmalemal process of the spermatozoon between the oviduct cells; budding nuclei throughout the female genital tract; and the two Feulgen and DAPI positive areas in the oocyte at vitelogenesis. These morphological characteristics suggest that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acari; Ticks; Female reproductive system; Fertilization.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212005000300009
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