The identity of Rasbora neilgherriensis (Teleostei: Danionidae), with a re-description

Zootaxa ◽  
2020 ◽  
Vol 4894 (2) ◽  
pp. 261-268
Author(s):  
DENCIN RONS THAMPY ◽  
AGIN GEORGE KURIAN ◽  
K. REMA DEVI ◽  
RAHUL G. KUMAR

Rasbora neilgherriensis Day, long considered a synonym of Rasbora daniconius or Rasbora dandia, is re-described and shown to be a valid species based on an examination of type and recently-acquired topotypical specimens from the Western Ghats of India. The species is characterised by a complete lateral line with 32–34 pored scales on body, ½5–6/1/2½ scales in transverse line on body, a mid-lateral stripe that is 2½ scales wide anterior to the pelvic fin and 1–1½ scales wide on the caudal peduncle, and a caudal fin that is emarginate to forked with broadly rounded lobes. The species was recorded from the Cauvery River Basin in Kerala and Tamil Nadu, India, at elevations ranging from 710 m to 2015 m above sea level, in stream stretches with relatively denser riparian canopy cover. 

2018 ◽  
Vol 17 (1) ◽  
pp. 21
Author(s):  
Arun Kanagavel ◽  
Sethu Parvathy ◽  
Abhiijth P. Chundakatil ◽  
Neelesh Dahanukar ◽  
Benjamin Tapley

Distribution and habitat associations of the Critically Endangered frog Walkerana phrynoderma (Anura: Ranixalidae), with an assessment of potential threats, abundance, and morphology. Little is known about Walkerana phrynoderma, a frog endemic to the Anamalai Hills of the Western Ghats of India. Baseline information (i.e., distribution, threats, habitat characteristics, activity patterns, and relative abundance) is provided for this species, with the aim of improving our understanding of the status of the species in the wild. Visual-encounter, transect, and time-activity budget surveys were conducted in and around the Anamalai Hills of the Western Ghats. The frog skin was swabbed to determine the presence/absence of Batrachochytrium dendrobatidis, and habitat and environmental characteristics were recorded at sites where W. phrynoderma was found. These data were compared with those of sites apparently lacking this species that had suitable habitat. Walkerana phrynoderma is restricted to evergreen forests between 1300 and 1700 m a.s.l. in the Anamalai Tiger Reserve and at Munnar; thus, its range was extended from the state of Tamil Nadu to the adjoining state of Kerala. Pesticide runoff and human disturbance are the most severe threats to the species; B. dendrobatidis was not detected. This nocturnal anuran prefers forest edges and is associated with well-shaded forest foors in cool areas near freshwater streams. Walkerana phrynoderma is rarely encountered whereas its congener, W. leptodactyla, is more common. The impact of anthropogenic disturbances, especially waste disposal and development of tourism infrastructure, should be evaluated. The land that is owned by the Forest Department peripheral to the protected areas could be designated as eco-sensitive sites to prevent changes in land use that could have an adverse effect on W. phrynoderma.


Zootaxa ◽  
2018 ◽  
Vol 4429 (1) ◽  
pp. 141
Author(s):  
RALF BRITZ ◽  
V.K. ANOOP ◽  
NEELESH DAHANUKAR

Dario neela, is described from a small tributary stream of the Kabini River in northern Kerala, India. It can be distinguished from congeners by the male colouration in life, which shows wide rims of iridescent blue in all median fins and the pelvic fin. It is further distinguished from all species of Dario, except D. urops by the number of abdominal vertebrae (14 vs. 11–13), and from all Dario species except D. urops and D. huli by the presence of a conspicuous black blotch on the caudal-fin base. Dario neela is distinguished from D. urops by the absence of the horizontal suborbital stripe and presence of a series of up to eight black bars on the body; and from D. huli by 27–28 vertebrae and 27 scales in a lateral row and the absence of teeth from hypobranchial 3. Dario neela is genetically divergent from both Western Ghats congeners in the mitochondrial CO1 gene, showing an uncorrected p-distance of 5.9% with D. urops and 13.1% to D. huli. 


Zootaxa ◽  
2017 ◽  
Vol 4221 (4) ◽  
pp. 491
Author(s):  
R.R. RACHANA ◽  
R. VARATHARAJAN

Thrips laurencei sp.n. is described from specimens collected on flowers of Hydrangea macrophylla in Western Ghats range of Tamil Nadu, India. This new species shows sexual dimorphism in colour, with the females brownish yellow with brown shadings but the males uniformly yellow.  


Zootaxa ◽  
2018 ◽  
Vol 4434 (3) ◽  
pp. 529 ◽  
Author(s):  
UNMESH KATWATE ◽  
PRADEEP KUMKAR ◽  
RAJEEV RAGHAVAN ◽  
NEELESH DAHANUKAR

A new species of the cyprinid genus Pethia is described from the Hiranyakeshi, a tributary of the Krishna River system in the Western Ghats mountain ranges of peninsular India. The new species, Pethia sahit, is syntopic—and shoals together—with Pethia longicauda, a species described recently from the same river. Pethia sahit is distinguished from P. longicauda and its congeners by a combination of characters like, incomplete lateral line with 3–6 pored scales; 19–22 scales in lateral series; 4½ scales between dorsal-fin origin and lateral-line row and 2½ scales between lateral line row and pelvic-fin origin; intercalated scale row originates above and after the 6th scale of the lateral-line scale row; dorsal fin originating behind the pelvic-fin origin; 4+13 abdominal and 12 caudal vertebrae; dorsal, pectoral, pelvic, anal and caudal fins without any bands or spots, deep yellow-orange in color or deep red with a pale tint of orange in mature males; a dark-black vertically elongate humeral spot, overlapping the 4th lateral-line scale, extending over the base of one scale above and below the 4th scale; caudal peduncle spot dark, covering 14th–16th scales in lateral-line scale row. Genetic analysis based on the mitochondrial cytochrome b gene indicates that P. sahit and P. longicauda are not sister taxa. Further, P. sahit has no genetically proximate congener in the Western Ghats region, and differs from known congeners from south and southeast Asia, for which genetic data are available, with genetic distance ranging from 11.8–16.4%. 


Zootaxa ◽  
2020 ◽  
Vol 4881 (2) ◽  
pp. 383-392
Author(s):  
GURUSAMY RAMESH ◽  
RAJAPPA BABU ◽  
KUMARAPURAM A. SUBRAMANIAN

Soa papanasam sp. nov. is described and illustrated based on both sexes from Kalakkad Mundanthurai Tiger Reserve and Meghamalai Wildlife Sanctuary, Tamil Nadu, India. It differs from all other known species of Soa, by hindwing vein R1 originating proximal to vein M1 and distal to M2. This is the first species of the genus Soa described from India.


2015 ◽  
Vol 42 (3) ◽  
pp. 251-275 ◽  
Author(s):  
Sekar Chellappan ◽  
R Sudha

Purpose – The purpose of this paper is to analyse the investment pattern, adoption behaviour, attitude of farmers towards conservation compliance programmes and the extent of participation of farmers in soil conservation projects in the Western Ghats of India. Design/methodology/approach – For the present study, multistage purposive sampling was followed. The sample respondents were identified for the survey in all the five categories of watersheds (very high, high, medium, low and very low priority watersheds) in the Nilgiris district of Tamil Nadu at the rate of 50 farm respondents in each category. Since the investment among the five categories of watersheds did not show any significant differences, the sample farmers were post stratified as marginal, small, medium and large farmers based on farm size for further analysis. Findings – The investment analysis showed a benefit cost ratio (BCR) of 1.03 for staggered trenches for tea to 1.40 for bench terrace for carrot. For annual crops, the BCR for bench terrace varied from 1.03 for cabbage to 1.32 for carrot. Among the soil conservation technologies, in tea plantation, stone wall had the highest net present value (NPV) of Rs. 74,335. Staggered trench had the lower NPV Rs. 19,237 among all conservation structures. The results of the contingent valuation showed that cropped area, farm size, on-farm income positively and significantly influenced the willingness to pay (WTP) towards soil conservation. Family size and age of the farmer negatively influenced the WTP of the respondents significantly. The multinomial logit model indicated that staggered trench had direct impact on productivity. In tea plantation, staggered trench adoption was influenced by area under plantation crops, farm size, educational level and land slope. The participation index was very low (<30), indicating the poor participation of farmers in soil conservation programmes. Research limitations/implications – The results of the study reveal the appropriateness of the soil conservation technologies for the select soil type as well as the specific socioeconomic conditions of the farmers undertaking conservation compliance programs in the Nilgiris district of Tamil Nadu. Understanding the farmer’s perceptions and adoption behaviour is important in making the whole programme a successful one. Hence the results of the study may not be generalized for other study zones, unless otherwise, the agro-ecological zone is similar to the site where the study was conducted. Practical implications – The study suggested that adoption of conservation technologies should be promoted in a big way to conserve natural resources like soil and enhance economic returns. It is also advocated that institutions should provide only guidance for community participation not on community governance and the role should be involving the real stakeholders/beneficiaries under participatory mode to achieve the goal of soil conservation. The bottom-up approach should be adopted to address the real issues involved in conservation compliance programmes. Social implications – The outcome of the study advocates the economic viability of conservation technologies adopted by the crop farmers. The project results also advised the farmers, institutions and the enforcements authorities, the strategies to be adopted to minimize soil loss and increase crop productivity by adopting the appropriate conservation compliance programs. The results also revealed that conservation of soil and water not only conserved the precious natural resources but also had far reaching effect on the yield of croplands, which would be reflected on the food and nutritional securities of the local communities at the micro level and the nation as a whole at the macro level. Originality/value – The research outcome is based on the field level research done by the authors in the Western Ghats of India. The primary data collected from the respondents were analysed and used for drawing inferences and conclusions.


PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3007 ◽  
Author(s):  
Sonali Garg ◽  
Robin Suyesh ◽  
Sandeep Sukesan ◽  
SD Biju

The Night Frog genusNyctibatrachus(Family Nyctibatrachidae) represents an endemic anuran lineage of the Western Ghats Biodiversity Hotspot, India. Until now, it included 28 recognised species, of which more than half were described recently over the last five years. Our amphibian explorations have further revealed the presence of undescribed species of Nights Frogs in the southern Western Ghats. Based on integrated molecular, morphological and bioacoustic evidence, seven new species are formally described here asNyctibatrachus athirappillyensissp. nov.,Nyctibatrachus manalarisp. nov.,Nyctibatrachus pulivijayanisp. nov.,Nyctibatrachus radcliffeisp. nov.,Nyctibatrachus robinmooreisp. nov.,Nyctibatrachus sabarimalaisp. nov. andNyctibatrachus webillasp. nov., thereby bringing the total number of validNyctibatrachus species to 35 and increasing the former diversity estimates by a quarter. Detailed morphological descriptions, comparisons with other members of the genus, natural history notes, and genetic relationships inferred from phylogenetic analyses of a mitochondrial dataset are presented for all the new species. Additionally, characteristics of male advertisement calls are described for four new and three previously known species. Among the new species, six are currently known to be geographically restricted to low and mid elevation regions south of Palghat gap in the states of Kerala and Tamil Nadu, and one is probably endemic to high-elevation mountain streams slightly northward of the gap in Tamil Nadu. Interestingly, four new species are also among the smallest known Indian frogs. Hence, our discovery of several new species, particularly of easily overlooked miniaturized forms, reiterates that the known amphibian diversity of the Western Ghats of India still remains underestimated.


Author(s):  
Aditi Chanchani ◽  
Swathi Seshadri ◽  
Rosemary Viswanath

Tourism has emerged as a major player and an increasing threat to the Western Ghats, its ecological landscape, the diverse ecosystems associated with it, and the many groups of indigenous (Adivasi) and other traditional forest-dwelling communities living in it. Unregulated growth and overly ambitious developmental plans in environmentally fragile areas have many strong and often irreversible fallouts: increased deforestation, fragmentation of wildlife habitats, closing of critical links between habitats, loss of people's access to and control over resources being among some of them. In 2010, EQUATIONS initiated a study that aimed to understand the impacts of tourism on the Sigur Plateau in the Western Ghats in the southern state of Tamil Nadu, taking into consideration the impacts of tourism on the biodiversity, natural resources, and the communities that live in and around the area. The scope of the study was to assess tourism in the realms of economic, environmental, and social impacts. For the purposes of this chapter, the environmental impacts have been focused on.


2018 ◽  
Vol 10 (9) ◽  
pp. 12294
Author(s):  
M. Omalsree ◽  
V. K. Sreenivas

Striga masuria (Orobanchaceae) was described by Bentham based on heterogenous collections viz. Hamilton’s from the Morang Hills of Nepal and Wallich’s from Prome of Myanmar in 1810 and 1826 respectively.  Later, Shutter collected this species for India from the Guindy regions of Tamil Nadu.  It has now been recollected from India after 135 years from the same locality.  Present studies on fresh specimens revealed that the character of the plant shows close similarities with its allied species, S. angustifolia excepting a few features.  These characters are not strong enough to retain its species status, hence it is reduced as a variety under the latter.  A detailed description and colour photographs are given for easy identification of the species.  A lectotype has also been designated for the taxon. 


2020 ◽  
Vol 12 (10) ◽  
pp. 16262-16271
Author(s):  
Remya L. Sundar ◽  
V.K. Anoop ◽  
Arya Sidharthan ◽  
Neelesh Dahanukar ◽  
Rajeev Raghavan

Bhavania annandalei Hora 1920, is resurrected from the synonymy of B. australis (Jerdon, 1849) based on examination of freshly collected topotypic specimens.  The two species can be distinguished by a combination of morphological characters including low, dense, and sparsely distributed tubercles on dorsal surface of head and operculum, rostral barbels reaching anterior border of upper lip, rostral flaps between the rostral barbels fleshier, 11–12 scale rows above the lateral line, and caudal peduncle stout with its depth to width ratio less than 2.5.  The two species formed significantly distinct clusters in multivariate space.  Further, the two species have a raw genetic distance of 6.4% in the mitochondrial cytochrome oxidase subunit 1 gene.  The distribution of B. annandalei is restricted to the river systems draining the Agasthyamalai Hills, below the Shencottah Gap in southern Western Ghats, while B. australis occurs in rivers north of the Shencottah Gap. 


Sign in / Sign up

Export Citation Format

Share Document