Retinal projections in two crocodilian species, Caiman crocodilus and Crocodylus niloticus

被引：19
作者：
Derobert, Y
Médina, M
Rio, JP
Ward, R
Repérant, J
Marchand, MJ
Miceli, D
机构：
[1] Natl Museum Nat Hist, Anat Comparee Lab, F-75005 Paris, France
[2] Hop La Pitie Salpetriere, INSERM U106, F-75651 Paris 13, France
[3] Univ Quebec, Lab Nueropsychol Expt & Comparee, Trois Rivieres, PQ G9A 5H7, Canada
来源：
ANATOMY AND EMBRYOLOGY | 1999年 / 200卷 / 02期
关键词：
primary visual system; crocodilians; reptiles; birds; evolution;
D O I：
10.1007/s004290050271
中图分类号：
R602 [外科病理学、解剖学]; R32 [人体形态学];
学科分类号：
100101 ;
摘要：
The retinal projections of Caiman crocodilus and Crocodylus niloticus were investigated by means of the orthograde axonal transport of either rhodamine beta-isothiocyanate or tritiated proline. In these two species, each tracer revealed contralateral retinal projections to three hypothalamic regions (subventricular gray matter, nucleus suprachiasmaticus, and area optica hypothalami lateralis), five thalamic regions (nuclei ovalis, dorsolateralis anterior, ventrolateralis and ventrobasalis, and lateral geniculate complex, of which six subcomponents can be distinguished), six prerectal regions (nuclei posterodorsalis, lentiformis mesencephali, griseus tectalis, geniculatus pretectalis, area optica commissurae posterior and area optica pretectalis lateroventralis), six outermost layers of the optic tectum, and the nucleus opticus tegmenti. Weak ipsilateral retinal projections have been observed in two hypothalamic nuclei and in the nucleus opticus tegmenti. Comparative analysis with other data show that the contralateral retinal projections of crocodiles are considerably more reptilian than avian. Moreover, crocodiles share with birds an extremely poor contingent of ipsilateral retinal projections.
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页码：175 / 191
页数：17
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