Ontogenetic changes in the mesogastric viscera of the Colobidae
Article first published online: 11 MAR 2010
Proceedings of the Zoological Society of London
Volume 124, Issue 1, pages 163–183, May 1954
How to Cite
Hill, W. C. O. (1954), Ontogenetic changes in the mesogastric viscera of the Colobidae. Proceedings of the Zoological Society of London, 124: 163–183. doi: 10.1111/j.1096-3642.1954.tb01486.x
- Issue published online: 11 MAR 2010
- Article first published online: 11 MAR 2010
- Received 7th May 1963
- 1Stages in the developmental differentiation of the stomach are described in a graded series of embryos and foetuses of Semnopithecus priam with special reference to morphogenetic and histogenetic features.
- 2Comparison is made with material from Colobus (Piliocolobus) badius and with data from the literature regarding some other Asiatic colobid monkeys.
- 3Neonatal stages are considered in Semnopithecus, Kasi, Trachypithecus and Presbytis, with special reference to the morphological changes involving the liver.
- 4Conclusions are (a) that although the colobid stomach presents features of a primitive order, in so far as these recall embryonic conditions, the viscus, both as a whole and in its details, is secondarily specialized in adaptation to a specialized diet. This simply means that embryonal gastric characters have been utilized in the elaboration of the definitive organ, whereas in the other Old World pithecoids the stomach has undergone a divergent simplification; (b) some evidence is indicated of intergeneric differentiation in gastric morphology whithin the family, e.g. in Procolobus and Nasalis especially; (c) the mutual topographical relations of stomach and liver as observed in adult colobids are post-natal and result from several independent factors, especially (i) prenatal hepatic function and (ii) post-natal gastric function.