Hypothalamo-neurosecretory system of the marine teleost, Sphyraena obtusata Cuvier


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Authors

  • A K Pandey Central Marine Fisheries Research Institute, Cochin — 682 014, India
  • M Peer Mohamed Central Marine Fisheries Research Institute, Cochin — 682 014, India

Abstract

Hypothalamus of Sphyraena obtusata (Family : Sphyraenidae) comprises nucleus preopticus (NPO), nucleus lateralis tuberis (NLT) and their axonal tracts. NPO is a paired structure situated on either side of the third ventricle anterodorsal to the optic chiasma. It is a highly vascularised structure and look inverted L-shape in sagittal section. NPO is divisible into a dorsal pars magnocellularis (PMC) consisting of large neurosecretory cells and pars parvocellularis (PPC) formed of smaller neurons. NLT cells are distributed uniformly in the infundibular floor adjacent to the pituitary stalk. Neurons of PMC and PPC contribute beaded axons to form neurohypophysial tract. Neurosecretory colloid - like material of varying sizes are encountered in NPO. Herring bodies are seen in the anterior as well as posterior neurohypophysis.

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Author Biographies

  • A K Pandey, Central Marine Fisheries Research Institute, Cochin — 682 014, India
    Central Marine Fisheries Research Institute, Cochin — 682 014, India
  • M Peer Mohamed, Central Marine Fisheries Research Institute, Cochin — 682 014, India
    Central Marine Fisheries Research Institute, Cochin — 682 014, India

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Issue

Vol. 44 No. 2 (1997)

Section

Note

License

The copyright of the articles published in Indian Journal of Fisheries vests with the Indian Council of Agricultural Research, who has the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in these journals. The Council has no objection in using the material, provided the information is being utilized for academic purpose but not for commercial use. Due credit line should be given to the ICAR where information will be utilized.

How to Cite

Pandey, A. K., & Mohamed, M. P. (2011). Hypothalamo-neurosecretory system of the marine teleost, Sphyraena obtusata Cuvier. Indian Journal of Fisheries, 44(2), 191-200. https://epubs.icar.org.in/index.php/IJF/article/view/8866