Occurrence of carotid labyrinth in the catfish group of teleost fishes

Srivastava, C. B.; Singh, Mithilesh

doi:10.1007/bf01970117

Cited by 16 publications

(16 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The present investigation clearly revealed the presence of NSCs in CL for the first time. This association is suggestive of a chemoreceptive role of these PNSCs, as the CL is known chemosensory organ in fish (Srivastava and Singh ; Munshi and Hughes ) and amphibian (Kusakabe , ).…”

Section: Discussionmentioning

confidence: 84%

“…Occurrence of a cluster of peculiar neurosecretory cells is yet another revelation (Gopesh ; see Srivastava ; Srivastava and Gopesh ). These cells are located close to pseudobranch/carotid labyrinth (CL), in the region of the first two efferent branchial vessels (EBA) and the part of lateral dorsal aorta (LDA) connecting the two (Srivastava and Singh ; Srivastava et al . ; Srivastava and Gopesh ).…”

Section: Introductionmentioning

confidence: 99%

“…It can sustain large periods of O 2 deficit in water overcoming hypoxia. A chemosensory role has been speculated for the pseudobranchial neurosecretory cells (PNSCs) as these are found in close proximity with CL – a known chemosensory organ in fish (Srivastava and Singh ; Munshi and Hughes ; Srivastava et al . , ; Srivastava and Pandey ,b) and amphibians (Kusakabe , ).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fine structure of diffused pseudobranchial neurosecretory cells associated with carotid labyrinth in an air‐breathing catfish Clarias batrachus

Sengar

Yadav²,

Gopesh

et al. 2014

Acta Zoologica

View full text Add to dashboard Cite

Fish are known to have branchial chemoreceptors and even extrabranchial chemoreceptors to meet the challenges of aquatic environment. The pseudobranchial neurosecretory system associated with carotid labyrinth (CL) is one such example. CL – a chemosensory organ is well known in amphibians. The homologous structure also exists in fish. Clusters of neurosecretory cells, close to the CL and the first two efferent branchial arteries occur in catfish and a few other groups of teleosts. These cells belong to the pseudobranchial neurosecretory system (PNS). To reveal the ultrastructure of CL and the pseudobranchial neurosecretory cells (PNSCs), environmental scanning electron microscope (ESEM) and transmission electron microscope (TEM) investigations were made in an Asian air‐breathing catfish Clarias batrachus. Under ESEM, the PNS appeared as a mass of cells innervated by nerves and supplied by blood capillaries. The CL appeared to have a network of blood capillaries. The transmission electron microscopic investigations showed pear shaped PNSCs having different sizes of dense cored vesicles (DCVs), numerous mitochondria, nerve varicosities, indicating a secretory function of the cells. The CL shows a close association with PNSCs and smooth muscles. Although the exact function of the CL and associated PNSCs in the biology of fish is far from clear, their morphology suggests they are involved in a stress response such as to hypoxia.

show abstract

Section: Discussionmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fine structure of diffused pseudobranchial neurosecretory cells associated with carotid labyrinth in an air‐breathing catfish Clarias batrachus

Sengar

Yadav²,

Gopesh

et al. 2014

Acta Zoologica

View full text Add to dashboard Cite

show abstract

“…The close proximity of these cells with carotid labyrinth, a structure known for its chemoreceptor function, in both fishes (Munshi and Hughes 1981; Srivastava and Singh 1980; Singh 1982; Srivastava and Pandey 1984a,b; Pandey 1985; Srivastava et al. 1981, 1988) and amphibians (Kusakabe 2002) is indicative of a probable chemoreceptor function of the PNSCs, most probably in condition of hypoxia.…”

Section: Discussionmentioning

confidence: 99%

“…2010), and the carotid labyrinth in catfishes (Singh 1982; Gopesh 1983; Devi 1987; Prakash 1993; Gopesh and Srivastava 1997; Gopesh et al. 2003), a chemosensory role has been speculated for the cells of this system, as carotid labyrinth is a structure known for its chemoreceptive function in fishes (Srivastava and Singh 1980; Munshi and Hughes 1981; Srivastava and Pandey 1984a,b; Pandey 1985; Srivastava et al. 1988; Singh 1982) and amphibians (Kusakabe 2002).…”

Section: Introductionmentioning

confidence: 99%

Paraneuronal pseudobranchial neurosecretory cells in scorpion catfish Heteropneustes fossilis: an environment scanning electron microscope and transmission electron microscope study

Yadav¹,

Sengar

Zaccone

et al. 2011

Acta Zoologica

View full text Add to dashboard Cite

Yadav, L., Sengar, M., Zaccone, D. and Gopesh, A. 2011. Paraneuronal pseudobranchial neurosecretory cells in scorpion catfish Heteropneustes fossilis: an environment scanning electron microscope and transmission electron microscope study. —Acta Zoologica (Stockholm) 00: 1–8. Pseudobranchial neurosecretory system (PNS), found in the gill region of certain groups of teleosts, falls under the category of the ‘diffuse neuroendocrine system’ (DNES). The cells belonging to the system share morpho‐functional features with the paraneuronal cells observed in respiratory tract and airway surfaces of higher vertebrates. On the basis of the experimental observations, a role in condition of hypoxia has been recorded for this system. In an attempt to elucidate the ultrastructure of pseudobranchial neurosecretory cells, present investigation was undertaken using environment scanning electron microscope (ESEM) and TEM in an air‐breathing catfish, Heteropneustes fossilis. The external morphology of PNS under ESEM appeared as a mass of cells supplied with nerves and blood capillaries. Each cell mass is made up of numerous pear‐shaped neurosecretory cells, confirmed by neurosecretion‐specific acid violet stain. The TEM investigation of the cells revealed the presence of different sizes of dense‐cored vesicles in the cytoplasm, which was observed as granular cytoplasm under light microscope. Presence of large number of mitochondria in the cytoplasm confirmed active involvement of these cells in the physiology of fishes. Although lacuna prevails regarding the exact function of this system of fish, its probable role in hypoxic condition and surfacing behavior are speculated.

show abstract

Control of Breathing in Ectothermic Vertebrates

Milsom

Gilmour

Perry

et al. 2022

Comprehensive Physiology

View full text Add to dashboard Cite

Occurrence of carotid labyrinth in the catfish group of teleost fishes

Abstract: The C-banding patterns of 6 species of japanese vespertilionine bats are presented. The variation in amount

Cited by 16 publications

References 1 publication

Fine structure of diffused pseudobranchial neurosecretory cells associated with carotid labyrinth in an air‐breathing catfish Clarias batrachus

Fine structure of diffused pseudobranchial neurosecretory cells associated with carotid labyrinth in an air‐breathing catfish Clarias batrachus

Paraneuronal pseudobranchial neurosecretory cells in scorpion catfish Heteropneustes fossilis: an environment scanning electron microscope and transmission electron microscope study

Control of Breathing in Ectothermic Vertebrates

Contact Info

Product

Resources

About