Morphological characterization of the ovary and oocytes vitellogenesis of the tick Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae).
This study presents the morphology of the ovary, as well as the process of the vitellogenesis in oocytes of the tick Rhipicephalus sanguineus. The ovary of these individuals is of the panoistic type; therefore, it lacks nurse cells. This organ consists of a single tubular structure, continuous, and composed of a wall formed by small epithelial cells with rounded nuclei which delimit the lumen. The oocytes in the different developmental stages in this tick species were classified into five stages (I-V). They remain attached to the ovary during vitellogenesis by a cellular pedicel and afterwards the mature oocytes (stage V) are released into the ovary lumen.
de Oliveira
Patrícia Rosa
PR
Departamento de Biologia, Instituto de Biociências, UNESP, Av. 24 A, no. 1515, Cx. Postal 199, Rio Claro, SP 13506-900, Brazil.
Bechara
Gervásio Henrique
GH
Denardi
Sandra Eloisi
SE
Nunes
Erika Takagi
ET
Camargo Mathias
Maria Izabel
MI
D010131:Aminosalicylic Acid; D000818:Animals; D001978:Bromphenol Blue; D004396:Coloring Agents; D005260:Female; D005456:Fluorescent Dyes; D006651:Histocytochemistry; D008055:Lipids / Q000032:analysis; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D009865:Oocytes / Q000737:chemistry / Q000145:classification / Q000502:physiology / Q000648:ultrastructure; D010053:Ovary / Q000033:anatomy & histology / Q000502:physiology / Q000648:ultrastructure; D010078:Oxazines; D011134:Polysaccharides / Q000032:analysis; D011506:Proteins / Q000032:analysis; D048508:Rhipicephalus sanguineus / Q000033:anatomy & histology* / Q000737:chemistry / Q000502:physiology*; D014818:Vitellogenesis / Q000502:physiology*
D004396:Coloring Agents; D005456:Fluorescent Dyes; D008055:Lipids; D010078:Oxazines; D011134:Polysaccharides; D011506:Proteins; D001978:Bromphenol Blue; C008619:Nile Blue; D010131:Aminosalicylic Acid