TAILIEUCHUNG - Morphology of the male reproductive system of the social wasp, Polistes versicolor versicolor, with phylogenetic implications

We conducted the study at a private facility in Washington State, USA. The animals at the facility were mainly or- phaned individuals that were housed in captivity for huma- nitarian reasons. The study was conducted under a license from the State of Washington, USA. Animals were kept in three outdoor enclosures, each c. 1500m2 in size. The enclosures consisted of mature conifer and hardwood forest enriched with water bodies and logs for climbing. The animals were fed commercial mink food mixed with offal provided by local elk and deer hunters. The animals had ad lib access to food and water, and were occasionally provided with elk and deer heads, hoofs and legs. | Journal of Insect Science Vol. 10 Article 71 Araujo et al. Morphology of the male reproductive system of the social wasp Polistes versicolor versicolor with phylogenetic implications Vinícius Albano Araújola Jane Moreiralb and José Lino-Neto2c Programa de Pós-Graduaẹão em Entomologia Department of Animal Biology Federal University of Viẹosa Minas Gerais CEP 36570-000 Brazil 2Department of General Biology Federal University of Viẹosa Minas Gerais CEP 36570-000 Brazil Abstract Variation in the morphology of the adult male reproductive system among different groups of Hymenoptera offer characteristics that help studies of behavior and the evolutionary history of this group. The objective of this study was to describe the adult male reproductive system of the wasp Polistes versicolor versicolor Olivier Vespidae Polistini . The reproductive systems were dissected fixed and embedded for light microscopy. In P. v. versicolor the reproductive system includes a pair of testes each one with three fusiform follicles. From each follicle emerges an efferent duct that later join together forming a deferent duct. The first half of the deferent duct is enlarged and differentiated into a region specialized for sperm storage the seminal vesicle. At the post-vesicular region of each of the deferent ducts an accessory gland emerges. The seminal vesicle and the accessory gland are covered with a capsule forming a vesicle-gland complex also observed in some species of North American Polistes. Sperm are released from testes in bundles which are disorganized inside seminal vesicles. In the testicular follicles 95 spermatozoa were observed per cyst on average. Keywords histology mitotic cycles spermatozoa Vespidae Polistini Correspondence a b janesmoreira@ c linoneto@ Corresponding author Received 22 February 2009 Accepted 4 December 2009 Copyright This is an open access paper. We use the Creative Commons Attribution license that permits .

• Sức khỏe phụ nữ
• appendaged thereunto
• Eclectic Medical
• distinguished Homeopathic
• Owner Cooperative
• Economic Feasibility
• Agroforestry System
• decision making
• Competent family physicians
• altruist focused interventions
• ethically significant
• consumption based asset
• potential harms