Functional anatomy of the vomeronasal complex in the embryonic development of the pig [Sus scrofa dom.]

• Autorzy: Wohrmann-Repenning A. , Barth-Muller U.
• Języki publikacji: EN

Abstrakty

EN

The vomeronasal complex of 5 different aged pig embryos Sus scrofa dom. Linnaeus, 1758 with a total length (TL) of 330, 180, 75, 50 and 45 mm respectively were studied. In all cases the nasopalatal part surrounding Jacobson's organ was generally estab­lished. During the studied period of development the completion of details within the cartilaginous supporting structures were of primary interest. In the youngest embryo studied, ducts and furrows of the vomeronasal complex were blocked by fused epi­theliums. Their dissolvement was completed in an embryo of 57 mm (TL). The elaborated vomeronasal complex of the oldest embryo allowed some further analyses. So it proved that all morphological peculiarities of the supporting structures, the naso­palatine ducts and the papilla palatina in pigs are an indication of their importance to a properly functioning vomeronasal complex. As pigs have no rhinartum or cleft snout of the kind found in most mammals, no philtrum communicates with the sulcus papillae palatinae and the nasopalatine ducts where Jacobson's organs merge into. Their flat snout is however provided with a dinstict ventral groove which is obviously a substitute for the missing philtrum. Generally it was possible to classify the vomero­nasal complex in S. scrofa from a phylogenetic point of view. As this anatomical system in placental mammals fundamentally reveals two differing construction types, classi­fied as either primitive or progressive S. scrofa possesses a progressively developed vomeronasal complex.

Słowa kluczowe

EN

pig; vomeronasal complex; embryonic development; Sus scrofa; Jacobson's organ; functional anatomy; embryo

• Wydawca: -
• Czasopismo: Acta Theriologica
• Rocznik: 1994
• Tom: 39
• Numer: 3
• Opis fizyczny: p.313-323,fig.

Twórcy

autor

Wohrmann-Repenning A.

• University of Kassel, Heinrich-Plett-Str.40, D-34109 Kassel, Germany

autor

Barth-Muller U.

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