Morphology and Surface Ultrastructure of the Olfactory Rosette of a Hillstream Fish, Schizothorax richardsonii (Gray)

Authors

  • Kiran Kumari Assistant Professor (Guest), University Department of Zoology, Marwari College, Tilka Manjhi Bhagalpur University, Bhagalpur, Bihar 812007, India.
  • Tapan K Ghosh Ichthyology Research Laboratory, University Department of Zoology, T.M. Bhagalpur University, Bhagalpur, Bihar 812007, India

DOI:

https://doi.org/10.48165/

Keywords:

Schizothorax richardsonii, Olfactory rosette, Morphology, Surface ultrastructure

Abstract

The morphology and surface ultrastructure of the  olfactory rosette of a cold water hill stream fish,  Schizothorax richardsonii (Gray) has been  investigated. The paired olfactory organs are  situated at the anterodorsal aspect of the head in  the form of olfactory chambers. Each chamber  has two separate openings, the anterior and the  posterior nostril. The olfactory rosette is oval and  cup shaped in appearance. Each lamella of the  rosette is a flat, curved and claw like structure.  The olfactory lamellar epithelium of Schizothorox  richardonii shows two distinct regions, the ciliated  and non-ciliated epithelium. In this fish, the  ciliated epithelium is composed mainly of four  types of cells which are distinguished on the  basis of their surface specialization. The non  ciliated epithelial cells or the indifferent  epithelium are provided with well marked  microridges. The surface of the raphe shows the  presence of microridged epithelial cells, mucous  gland openings as well as the type-1 ciliated cells.  The presence of ciliary patches on the median  raphe of Schizothorox richardonii indicates that  probably the raphe is somehow involved in  olfaction.  

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References

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Published

2020-03-25

Issue

Vol. 39 No. 1 (2020): Bulletin of Pure and Applied Sciences Zoology (Jan-Jun) 2020

Section

Articles

How to Cite

Morphology and Surface Ultrastructure of the Olfactory Rosette of a Hillstream Fish, Schizothorax richardsonii (Gray) . (2020). Bulletin of Pure & Applied Sciences- Zoology , 39(1), 9–16. https://doi.org/10.48165/