scholarly journals Length–weight relations of 14 fish species (Actinopterygii) from the Chalakudy River, Western Ghats, India

2021 ◽  
Vol 51 (3) ◽  
pp. 263-265
Author(s):  
Chelapurath Radhakrishnan Renjithkumar ◽  
Kuttanelloor Roshni ◽  
Kutty Ranjeet
Keyword(s):  
Fish Species ◽  
Western Ghats ◽  
Small Scale ◽  
Pangasianodon Hypophthalmus ◽  
Etroplus Suratensis ◽  
Channa Marulius ◽  
Baseline Information ◽  
Channa Striata ◽  
Management And Conservation ◽  
The Western Ghats

Length–weight relations of 14 fish species caught by small-scale fishery from the Chalakudy River of the Western Ghats biodiversity hotspot, India were analyzed from April 2018 to March 2019. The following species were studied: Amblypharyngodon microlepis (Bleeker, 1853); Dawkinsia filamentosa (Valenciennes, 1844); Puntius mahecola (Valenciennes, 1844); Osteobrama bakeri (Day, 1873); Labeo dussumieri (Valenciennes, 1842); Channa marulius (Hamilton, 1822); Channa striata (Bloch, 1793); Horabagrus brachysoma (Günther, 1864); Mystus armatus (Day, 1865); Pangasianodon hypophthalmus (Sauvage, 1878); Heteropneustes fossilis (Bloch, 1794); Etroplus suratensis (Bloch, 1790); Megalops cyprinoides (Broussonet, 1782); Parambassis thomassi (Day, 1870). The main fishing gear that was used in the data collection were gill nets, seine nets, and cast nets. The b values in the LWRs ranged from 2.649 (L. dussumieri) to 3.023 (P. hypophthalmus). This study reports the first LWR reference for five species and new maximum total lengths for five species. The results provide baseline information for the sustainable management and conservation of the studied species.

scholarly journals Length–weight relations of 14 fish species (Actinopterygii) from the Chalakudy River, Western Ghats, India

2021 ◽  
Vol 51 (3) ◽  
pp. 263-265
Author(s):  
Chelapurath Radhakrishnan Renjithkumar ◽  
Kuttanelloor Roshni ◽  
Kutty Ranjeet
Keyword(s):  
Fish Species ◽  
Western Ghats ◽  
Small Scale ◽  
Pangasianodon Hypophthalmus ◽  
Etroplus Suratensis ◽  
Channa Marulius ◽  
Baseline Information ◽  
Channa Striata ◽  
Management And Conservation ◽  
The Western Ghats

Length–weight relations of 14 fish species caught by small-scale fishery from the Chalakudy River of the Western Ghats biodiversity hotspot, India were analyzed from April 2018 to March 2019. The following species were studied: Amblypharyngodon microlepis (Bleeker, 1853); Dawkinsia filamentosa (Valenciennes, 1844); Puntius mahecola (Valenciennes, 1844); Osteobrama bakeri (Day, 1873); Labeo dussumieri (Valenciennes, 1842); Channa marulius (Hamilton, 1822); Channa striata (Bloch, 1793); Horabagrus brachysoma (Günther, 1864); Mystus armatus (Day, 1865); Pangasianodon hypophthalmus (Sauvage, 1878); Heteropneustes fossilis (Bloch, 1794); Etroplus suratensis (Bloch, 1790); Megalops cyprinoides (Broussonet, 1782); Parambassis thomassi (Day, 1870). The main fishing gear that was used in the data collection were gill nets, seine nets, and cast nets. The b values in the LWRs ranged from 2.649 (L. dussumieri) to 3.023 (P. hypophthalmus). This study reports the first LWR reference for five species and new maximum total lengths for five species. The results provide baseline information for the sustainable management and conservation of the studied species.

scholarly journals Ichthyofaunal diversity in the upper-catchment of Kabini River in Wayanad part of Western Ghats, India

2021 ◽  
Vol 13 (2) ◽  
pp. 17651-17669
Author(s):  
Dencin Rons Thampy ◽  
M.R. Sethu ◽  
M. Bibin Paul ◽  
C.P. Shaji
Keyword(s):  
Fish Species ◽  
Western Ghats ◽  
Native Species ◽  
River System ◽  
Freshwater Fishes ◽  
Iucn Red List ◽  
Cauvery River ◽  
True Diversity ◽  
Distribution Ranges ◽  
The Western Ghats

We present here a detailed account of the diversity, distribution, threats, and conservation of freshwater fishes in the upper-catchment of the Kabini River in the Wayanad part of the Western Ghats Biodiversity Hotspot.  A total of 136 fish species belonging to 13 orders, 29 families, and 69 genera were recorded.  Order Cypriniformes dominated with five families, 36 genera, and 84 species, and Cyprinidae was the dominant family represented by 51 species within 21 genera.  The true diversity of ichthyofauna in this catchment, is still unclear and requires further exploration and taxonomic studies.  At least 44 species recorded during the study are endemic to the Western Ghats, of which 16 are endemic to the Cauvery River System and two species endemic to the Kabini Catchment.  A total of 20 non-native fish species were recorded from the study area, of which six species were inter-basin (within India) transplants and 14 species were exotic.  Among the native species with confirmed identity, four are Critically Endangered (CR) and nine Endangered (EN) as per the IUCN Red List of Threatened Species.  As a part of the study, we also extend the distribution ranges of Opsarius malabaricus, Laubuka trevori, Opsarius bendelisis, Puntius cauveriensis, Oreichthys coorgensis, Mesonoemacheilus pambarensis, Hypselobarbus curmuca, and Pseudosphromenus cupanus to the Kabini Catchment.  The presence of four species, which were earlier considered to be endemic to the west flowing rivers of the Western Ghats, viz, Laubuka fasciata, Hypselobarbus kurali, Sahyadria denisonii, and Puntius mahecola, in an east flowing stream is reported and discussed.  Deforestation and removal of riparian vegetation, pollution, stream channel modification, sand mining, destructive fishing practices, dams and other impoundments, monsoon fishing, and non-native species are the major threats to freshwater fishes in the region.  Strategies for the conservation of aquatic ecosystems in the Kabini Catchment are discussed.

scholarly journals Osteological description of Indian Skipper Frog Euphlyctis cyanophlyctis (Anura: Dicroglossidae) from the Western Ghats of India

2020 ◽  
Vol 12 (9) ◽  
pp. 16136-16142
Author(s):  
Pankaj A. Gorule ◽  
Sachin M. Gosavi ◽  
Sanjay Kharat ◽  
Chandani Verma
Keyword(s):  
Reference Material ◽  
Related Species ◽  
Western Ghats ◽  
Hind Limb ◽  
Pectoral Girdle ◽  
Euphlyctis Cyanophlyctis ◽  
Western Ghats Of India ◽  
Baseline Information ◽  
The Western Ghats ◽  
Osteological Characters

The present study provides description of the osteology of Skipper Frog Euphlyctis cyanophlyctis.  Seven adult specimens of E. cyanophlyctis from northern Western Ghats of India were cleared and double stained for studying osteological characteristics.  The baseline description of osteological characters of cranial and post-cranial elements (paired nasals, tubular sphenethmoid, well-developed vomerine teeth, arciferal pectoral girdle, fan-shaped omosternum, cartilaginous W-shaped xiphisternum, hind limb with longest cylindrical humerus, V-shaped pectoral girdle and phalangeal appendages) provided in present study will help in further taxonomic investigations of the genus Euphlyctis.  Further, the baseline information on osteology of Skipper frog will serve as a reference material for investigations related to malformations, either in this or related species.  We also provide first observation on sacro-pelvic malformation in one of the studied specimens. 

scholarly journals Demographic changes of a tropical understory bird in naturally patchy montane habitats in southern India

2021 ◽  
Author(s):  
V.V Robin ◽  
James E Hines ◽  
James D Nichols ◽  
Madhusudan Katti ◽  
Anindya Sinha
Keyword(s):  
Western Ghats ◽  
Patch Size ◽  
Biodiversity Hotspot ◽  
Tropical Species ◽  
Forest Patch ◽  
Tropical Biodiversity ◽  
Baseline Information ◽  
Sky Island ◽  
The Western Ghats ◽  
Better Than

The occurrence, density and survival of a species often depend on various aspects of the habitat that it occupies including patch size and disturbance. The demography of most threatened tropical species largely remain unstudied but could provide valuable information about their biology and insights for their conservation. Our study examined the effect of patch size and disturbance on different demographic parameters of an understory, threatened, endemic bird, the white-bellied shortwing in the tropical biodiversity hotspot of the Western Ghats in India. We sampled eight plots on a sky-island using mist-nets for four years in a 'Robust design' mark-recapture framework. Based on model selection using AIC values, the model with survival as a function of disturbance fits the data better than models with abundance or with these parameters modelled as functions of forest patch size. Shortwing density and sex ratio were not different across forest patch sizes or differing disturbance regimes. However, the survival rate of the species significantly decreased with increasing disturbance but was not related to forest patch size. Our study is possibly the first to provide critical baseline information on the demography of a tropical understory species from this region.

scholarly journals A preliminary checklist of dragonflies and damselflies (Insecta: Odonata) of Vakkom Grama Panchayath, Thiruvanthapuram District, Kerala, India

2021 ◽  
Vol 13 (8) ◽  
pp. 19125-19136
Author(s):  
J. Arunima ◽  
P.O. Nameer
Keyword(s):  
Western Ghats ◽  
The Family ◽  
Baseline Information ◽  
One Year ◽  
The Western Ghats

A one-year study was conducted at Vakkom Grama Panchayath, Thiruvananthapuram district, Kerala, to assess the diversity of odonates. We report 49 species, which include 31 species of Anisoptera (dragonflies) and 18 species of Zygoptera (damselflies). Among dragonflies, the family Libellulidae dominated with 26 species, while Coenagrionidae with 10 species was the dominant family among the damselflies. The odonate diversity of Vakkom Grama Panchayath accounted for 28% of the odonates in Kerala and 25% of the odonates of the Western Ghats. Vakkom Grama Panchayath also recorded the presence of Mortonagrion varralli which is an uncommon species in Kerala. This study provides some important baseline information on the odonates of one of the grama panchayaths in Kerala, India. An updated checklist of 57 species of odonates of Thiruvananthapuram district, Kerala is also provided. 

New locality records and call description of the Resplendent Shrub Frog Raorchestes resplendens (Amphibia: Anura: Rhacophoridae) from the Western Ghats, India

2020 ◽  
Vol 12 (11) ◽  
pp. 16502-16509
Author(s):  
Sandeep Das ◽  
K.P. Rajkumar ◽  
K.A. Sreejith ◽  
M. Royaltata ◽  
P.S. Easa
Keyword(s):  
Endangered Species ◽  
Western Ghats ◽  
Small Area ◽  
Grassland Ecosystem ◽  
Critically Endangered Species ◽  
Controlled Burning ◽  
New Locations ◽  
Southern Western Ghats ◽  
First Time ◽  
The Western Ghats

Abstract: The Resplendent Shrub Frog, Raorchestes resplendens Biju, Shouche, Dubois, Dutta, & Bossuyt, 2010 is a Critically Endangered species endemic to the Western Ghats and was considered to be restricted to a three-square kilometer patch atop Anamudi summit.  In this study, we report 36 new locations of the species from the Anamalai massif of the southern Western Ghats.  Niche-based prediction modelling suggests that the species is restricted to Anamalai massif.  The call description of this frog is also provided for the first time. The preferred microhabitat of the frog is Chrysopogon grass clumps in the marshy/swampy montane grassland ecosystem. Restricted to a small area with controlled burning management practiced in its habitat, R. resplendens needs immediate attention.

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