Kuwait-University-Journal-of-Law-header
Search
Kuwait Journal of Science

Previous Issues

Advance Search
Year : From To Vol
Issue Discipline:
Author

Volume :14 Issue : 1 1987      Add To Cart                                                                    Download

The development of the skull of Gambusia affinis affinis (Baired & Girard). 1. The development of the chondral neurocranium

Auther : F. I. AMER*, M. H. ISMAIL+AND R. M. ELBALSHY+

*Department of Zoology, University of Kuwait, P.O. Box 5969, Safat 13060, Kuwait and

+Department of Zoology, Faculty of Science, University of Zagazig, Zagazig, Egypt

 

ABSTRACT

 

The development of the chondral neurocranium in five stages (3.5,4,5,6, and 8 mm total length) of the cyprinodont fish Gambusia aflnis aflnis has been described and reconstructed. The relationships between the developing neurocranial parts and olfactory organs, eyes, brain, membranous labyrinth and notochord have also been considered. Comparison with other fish species like Salmo gairdneri, Haplochromis elegans, Sarotherodon galilaeus and others was made. The chondral neurocranium is of the platytrabic type. The trabeculae become discontinuous with the parachordals at an early stage (8 mm larval stage) as compared with other bony fishes. An interorbital septum is absent.

 

In the orbitotemporal region of the neurocranium, the taeniae marginales are developed as discontinuous bars of cartilage and remain as such during ontogeny. The epiphysial cartilage is well developed and extends posteriorly as the taenia tecti medialis. The auditory capsule is provided internally with two septa: anterior and posterior.

 

Kuwait Journal of Science
Journal of Law

You are Visitor No.

55644

Journal of Law
Journal of Law
Tell your friendsJournal of Law
Journal of Law

Last Updated

Jun 19, 2012

Journal of Law
Journal of Law
Journal of Law

Please enter your email Here to receive our news

Journal of Law