Molecular Identification and Ecology of a Newly Discovered Population of Sun Catfish <i>Horabagrus brachysoma</i> from Northern Western Ghats of India

Katwate, Unmesh; Raut, Rupesh; Khot, Mayura; Paingankar, Mandar S.; Dahanukar, Neelesh

doi:10.5402/2012/419320

Cited by 6 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This has led to renewed research on various aspects including taxonomic issues and those explaining detailed distribution of several threatened freshwater fishes of the Western Ghats (Ali et al 2013a,b;Emmanuel et al 2013;Katwate et al 2012;Knight et al 2013). We hope that the detailed biometric and molecular data of topotypic material of Pethia setnai will aid in the reliable identification of this threatened taxon, and the information on its distribution and threats will be helpful in directing future conservation efforts.…”

Section: Discussionmentioning

confidence: 99%

Phylogenetic position and osteology of Pethia setnai (Chhapgar & Sane, 1992), an endemic barb (Teleostei: Cyprinidae) of the Western Ghats, India, with notes on its distribution and threats

Katwate¹,

Paingankar²,

Jadhav³

et al. 2013

J. Threat. Taxa

Self Cite

View full text Add to dashboard Cite

Abstract:Pethia setnai is an endemic and threatened freshwater fish of the Western Ghats of India. It has a restricted distribution in the west flowing rivers in the states of Maharashtra, Goa and Karnataka. We clarify the phylogenetic position of Pethia setnai, provide osteological details of topotypic material, and morphometric data of specimens from Maharashtra, Goa and Karnataka. We also provide details on micro-level distribution, habitat and threats to the species in its native range.

show abstract

Section: Discussionmentioning

confidence: 99%

Phylogenetic position and osteology of Pethia setnai (Chhapgar & Sane, 1992), an endemic barb (Teleostei: Cyprinidae) of the Western Ghats, India, with notes on its distribution and threats

Katwate¹,

Paingankar²,

Jadhav³

et al. 2013

J. Threat. Taxa

Self Cite

View full text Add to dashboard Cite

show abstract

“…Horabagrus brachysoma is an endemic catfish with a natural range in the rivers of Kerala (Ali et al 2007), Karnataka (Bhat 2001), and the Northern Western Ghats in Maharashtra (Katwate et al 2012). The catfish is propagated for small-scale aquaculture (Raghavan et al 2016) and is valued for the ornamental fish trade (Ali et al 2007;Sureshkumar 2013).…”

Section: Introductionmentioning

confidence: 99%

Acclimation to warm temperatures modulates lactate and malate dehydrogenase isozymes in juvenile Horabagrus brachysoma (Günther)

Dalvi,

Pal,

Debnath

2023

J Exp Bio & Ag Sci

View full text Add to dashboard Cite

Differential expression of isozymes enables fish to tolerate temperature fluctuations in their environment. The present study explores the modulation of lactate dehydrogenase (LDH) and cytoplasmic malate dehydrogenase (sMDH) isozyme expression in the heart, muscle, brain, liver, gill, and kidney of juvenile Horabagrus brachysoma after 30 days of acclimation at 26, 31, 33, and 36°C. LDH and sMDH zymography were performed using native polyacrylamide gel electrophoresis. The zymography revealed five distinct bands of LDH isoenzymes (labelled from cathode to anode as LDH-A4, LDH-A3B1, LDH-A2B2, LDH-A1B3, and LDH-B4) and three distinct bands of sMDH isoenzymes (labelled from cathode to anode as sMDH-A2, sMDH-AB, and sMDH-B2), with considerable variation in their expression in the tissues. Acclimation to the test temperatures did not influence the expression patterns of LDH or sMDH isozymes. Densitometric analysis of individual isozyme bands revealed a reduction in the densities of bands containing the LDH-B and sMDH-B molecules, while the densities of bands containing the LDH-A and sMDH-A molecules increased in the gills and muscle, indicating the role of these organs in adaptive responses to thermal acclimation. However, the total densities of the LDH and sMDH isozymes increased with higher acclimation temperatures, indicating that adaptation to increased temperatures in H. brachysoma is primarily characterised by quantitative changes in isozyme expression.

show abstract

“…The catfish, H. brachysoma, is propagated as a candidate species for aquaculture (Raghavan et al 2016) and is valued as an ornamental fish in India and in international trade (Anvar Ali et al 2007;Sureshkumar 2013). Its natural home range is reported in the rivers of southern India states, including Kerala (Anvar Ali et al 2007), Karnataka (Kali and Aghanashini) (Bhat 2001), and Northern Western Ghats in Maharashtra (Katwate et al 2012). In India, H. brachysoma is considered an emerging species for small-scale aquaculture and is also caught from the wild for local consumption.…”

Section: Introductionmentioning

confidence: 99%

Histological changes in Horabagrus brachysoma acclimated to warm temperature and exposed to critical thermal maxima and minima

Dalvi,

Das,

Pal

et al. 2023

Zoology and Ecology

View full text Add to dashboard Cite

Escalating concerns about global climate change necessitate investigations into its consequences for the survival of poikilothermic animals like fish. The present study describes histological alterations in gill, skin, kidney, liver, and brain tissues of the juvenile Horabagrus brachysoma specimens acclimated to 26°C (control) and 36°C for 30 days, and those exposed to dynamic temperature changes (increased or decreased at the rate of 0.3°C/min from 26°C), the critical thermal maxima (CTMax) and critical thermal minima (CTMin). The fish acclimated to 36°C and those exposed to CTMax (40.23 ± 0.12°C) and CTMin (14.15 ± 0.10°C) showed severe histological aberrations in gill, skin, liver, kidney, and brain tissues. Histological alterations in gill tissues included loss of epithelial cells in the branchial arch, thinning of the primary lamellae, and loss of the secondary lamellae. Thickening of the epithelial layer (36°C), and desquamation of epithelial cells (CTMax) were the histological alterations detected in skin tissues. Alterations in liver tissues included severe congestion with vacuolization and the cloudy appearance of cells and extensive loss of cellular contour. Extensive vacuolization with complete flattening of the tubule epithelial cells, distorted appearance of tubular lamellae, and marked loss of glomerular tuft were the changes recorded in kidney tissues. Brain tissue alterations comprised increased cellularity and vacuolization in the cerebrum (36°C), and nodular masses of various sizes in the cerebrum (CTMin). The present study showed that acclimation to warm temperature (36°C) and exposure to dynamic temperature changes (CTMax and CTMin) cause histopathological alterations in the vital organs of H. brachysoma. The findings of the present study can help in monitoring the health of H. brachysoma in the natural environment and in culture systems under a climate change scenario.

show abstract

Molecular Identification and Ecology of a Newly Discovered Population of Sun Catfish Horabagrus brachysoma from Northern Western Ghats of India

Cited by 6 publications

References 20 publications

Phylogenetic position and osteology of Pethia setnai (Chhapgar & Sane, 1992), an endemic barb (Teleostei: Cyprinidae) of the Western Ghats, India, with notes on its distribution and threats

Phylogenetic position and osteology of Pethia setnai (Chhapgar & Sane, 1992), an endemic barb (Teleostei: Cyprinidae) of the Western Ghats, India, with notes on its distribution and threats

Acclimation to warm temperatures modulates lactate and malate dehydrogenase isozymes in juvenile Horabagrus brachysoma (Günther)

Histological changes in Horabagrus brachysoma acclimated to warm temperature and exposed to critical thermal maxima and minima

Contact Info

Product

Resources

About