COMPARATIVE MORPHOLOGY OF THE OVARIES OF THREE SPECIES OF DASYPODIDAE (MAMMALIA, XENARTHRA)
Ovarian morphology in the armadillos Chaetophractus vellerosus (Gray, 1865), Zaedyus pichiy (Desmarest, 1804) and Dasypus hybridus (Desmarest, 1804), was studied. Chaetophractus vellerosus and Z. pichiy present cylindrical ovaries with rounded extremities, a ventral parenchymatous zone "cortex" and a dorsal vascular one "medulla", with typical structure. In D. hybridus they are bean-shaped, the concavity corresponding to the parenchymatous zone and the convexity to the vascular zone. The presence of polyovular follicles in C. vellerosus and Z. pichiy is usual. Structures associated with the ovary (epoophoron, rete ovarii) are similar in the three species. While the features of the ovaries of C. vellerosus and Z. pichiy are comparable with those of C. villosus (Desmarest, 1804), the ones of D. hybridus are similar to those of D. novemcinctus Linné, 1758.
| Main Authors: | , |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Sociedad Chilena de Anatomía
2000
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| Online Access: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-98682000000200006 |
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| Summary: | Ovarian morphology in the armadillos Chaetophractus vellerosus (Gray, 1865), Zaedyus pichiy (Desmarest, 1804) and Dasypus hybridus (Desmarest, 1804), was studied. Chaetophractus vellerosus and Z. pichiy present cylindrical ovaries with rounded extremities, a ventral parenchymatous zone "cortex" and a dorsal vascular one "medulla", with typical structure. In D. hybridus they are bean-shaped, the concavity corresponding to the parenchymatous zone and the convexity to the vascular zone. The presence of polyovular follicles in C. vellerosus and Z. pichiy is usual. Structures associated with the ovary (epoophoron, rete ovarii) are similar in the three species. While the features of the ovaries of C. vellerosus and Z. pichiy are comparable with those of C. villosus (Desmarest, 1804), the ones of D. hybridus are similar to those of D. novemcinctus Linné, 1758. |
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