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Contrasting Observation in Culturable Aerobic and Micro-Aerophilic Heterotrophic Fish Gut-Bacteria:Intestine-Breathing Lepidocephalichthys guntea (Hamilton Buchannan) Versus Gill-Breathing Labeo rohita


Affiliations
1 Omics Laboratory, Department of Biotechnology, University of North Bengal, Siliguri - 734 013, India
 

Lepidocephalichthys guntea exhibits exceptional adaptive characters and can survive in flowing or stagnant waters as well as muddy hypercarbic condition resembling a desiccating habitat. This study was conducted to relate aerophilic (both aerobic and microaerophilic) bacterial density in the gut of L. guntea with dissolved oxygen (DO2) content. Aerophilic bacterial density in the gut of L. guntea was found independent of DO2 content, as the air pocket(s) present in the gut balances the deficit of oxygen obtained through gill respiration. This phenomenon was found to be reversed in gill-breathing fish like Labeo rohita because the additional mechanism to breathe air via gut is absent. The density of both the categories of culturable aerophilic bacteria was found to be significantly reduced in the gut of L. rohita gut in low DO2 condition of its habitat.

Keywords

Dissolved Oxygen, Gut Bacteria, Labeo Rohita, Lepidocephalichthys Guntea.
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  • Das, B. K., Some further observation of the structure and physiology of an air-breathing loach Lepidocepahlus (Lepidocephalichthys) guntea (Ham. Buch) found in Hydrabad. In Proceeding of the 24th Indian Science Congress, Hyderabad, 1937, p. 305.

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  • Ghosh, S. K., Ghosh, B. and Chakrabarti, P., Fine anatomical structures of the intestine in relation to respiratory function of an air-breathing loach, Lepidocephalichthys guntea (Actinopterygii: Cypriniformes: Cobitidae). Acta Ichthyol. Piscatoria, 2011, 41, 1–5.


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  • Contrasting Observation in Culturable Aerobic and Micro-Aerophilic Heterotrophic Fish Gut-Bacteria:Intestine-Breathing Lepidocephalichthys guntea (Hamilton Buchannan) Versus Gill-Breathing Labeo rohita

Abstract Views: 481  |  PDF Views: 130

Authors

Rudra Prasad Roy
Omics Laboratory, Department of Biotechnology, University of North Bengal, Siliguri - 734 013, India
Tilak Saha
Omics Laboratory, Department of Biotechnology, University of North Bengal, Siliguri - 734 013, India
Ranadhir Chakraborty
Omics Laboratory, Department of Biotechnology, University of North Bengal, Siliguri - 734 013, India

Abstract


Lepidocephalichthys guntea exhibits exceptional adaptive characters and can survive in flowing or stagnant waters as well as muddy hypercarbic condition resembling a desiccating habitat. This study was conducted to relate aerophilic (both aerobic and microaerophilic) bacterial density in the gut of L. guntea with dissolved oxygen (DO2) content. Aerophilic bacterial density in the gut of L. guntea was found independent of DO2 content, as the air pocket(s) present in the gut balances the deficit of oxygen obtained through gill respiration. This phenomenon was found to be reversed in gill-breathing fish like Labeo rohita because the additional mechanism to breathe air via gut is absent. The density of both the categories of culturable aerophilic bacteria was found to be significantly reduced in the gut of L. rohita gut in low DO2 condition of its habitat.

Keywords


Dissolved Oxygen, Gut Bacteria, Labeo Rohita, Lepidocephalichthys Guntea.

References





DOI: https://doi.org/10.18520/cs%2Fv115%2Fi3%2F548-552