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Showing posts with label jott. Show all posts
Showing posts with label jott. Show all posts

Poaching major reason for elephant deaths in the Nilgiris in the last three decades: New Study


Asian Elephant, wild elephant, Nilgiris, elephant poaching, elephant mortality
A wild Asian Elephant in Western Ghats, South India

Veerappan may be long gone, but poaching still tops the list as the major reason for elephant mortality during the last three decades in the Nilgiris. Trying to untangle the hidden patterns of elephant mortality in the Nilgiris reported during the 33 year period between 1979 to 2011, a new study reveals that 40 percent of the total elephant deaths from the region during the period were due to poaching. 

Citron barb, a new barb species, spotted from Western Ghats Rivers of Maharashtra


Citron Barb (Pethia lutea), a new barb species discovered from Western Ghat Rivers of Maharashtra
(Image Courtesy: Ralf Britz/JOTT)

Researchers studying the fish diversity in Western Ghats Rivers have discovered a yet unknown species of fresh water barb from the Western Ghats River systems in the Indian state of Maharashtra. The new species belongs to the Pethia genus of fishes which constitutes barbs found only in South Asia and Myanmar region.

New coral species discovered from Andaman and Nicobar Islands in India

Ctenactis triangularis, new coral species, andaman coral, nicobar corals, indian corals, coral reefs of india, marine biodiversity, beautiful corals
Ctenactis triangularis from Andaman and Nicobar Islands
Image Credit: C Raghunathan

Shedding light to the rich but unexplored marine biodiversity of India, Scientists of the Zoological Survey of India described a new species of coral reef, Ctenactis triangularis from Andaman and Nicobar Islands of India. The new species which belongs to the family of mushroom corals, adds a fourth member to the Ctenactis genus of corals.

“The first specimen of the species was collected from Rutland Island from South Andaman by snorkeling and skin-diving", said the scientists. Later another specimen of the same coral was observed at the North Bay in South Andaman in December 2008. Researchers were able to spot the same species again after two years, in 2010, off the coast of Elephant Beach in Havelock Island.

Tamal Mondal and C. Raghunathan , scientists at the Andaman and Nicobar Regional Centre of Zoological Survey of India situated at Port Blair have reported and described the identity of the new species.

Distinguishing features of Ctenactis triangularis

According to the ZSI scientists, the newly described species has characteristics which make it different from all the three members of the genus previously reported by other studies.
Ctenactis triangularis, new coral species, indian coral, andaman coral, nicobar coral, indian ocean coral,
Ctenactis triangularis
Image Courtesy: JOTT

The discovery which is published in the Journal of Threatened Taxa reveals that three characteristics make the new species different from its closest relatives.

The major feature is the triangular, flat shaped skeleton or corallum which makes it different. According t the study, ‘divisible mouth fossa, spinulose costal spines and cylindrical septal teeth’ also make it distinguished from other members of its genus.

To underscore one of its most visible distinguishing features – its flat triangular skeleton, the scientists have named it as triangularis. “The species has been named after the triangle-shaped arm like coralla, which gives a unique morphological character to distinguish it from other related species”, says the study.

Conservation Status of Ctenactis triangularis

Despite the new discovery, the future of the coral reefs off the coast of Andaman and Nicobar are likely bleaker, points out the study. “Threats, which can be categorized as natural and anthropogenic, to the reef biodiversity, have been encountered for a long time.”, it says.

According to the researchers, the new species belong to Scleractinian corals which are protected under CITES Appendix II which curbs the transnational smuggling of these corals. Moreover, they are also included in the Schedule I of protected organisms of Indian Wildlife Act, 1972. 

Road project threatens to wipe out rare plant species in Arunachal Pradesh


An ongoing road extension project near Aka Hills in Arunachal Pradesh in India may wipe out a rare medicinal plant found only in the Aka Hills, fears botanists working in the area. 

Aka Hills, Gaultheria akaensis, rare plant, arunachal wildlife, BRO, border Roads Organisation
Aka Hill race of Gaultheria akaensis
(
Photo Courtesy: Dr.
Subhasis Panda)
According to Dr. Subhasis Panda, an Assistant Professor  at the Angiosperm Taxonomy & Ecology Lab at the Post-Graduate Department of Botany in Darjeeling Government College, the plant - Gaultheria akaensis - has been reported so far from the Aka Hills of Arunachal Pradesh only. It is found in moist rocks covered with humus at an altitude of 1800 meters. 

“Since its discovery in 2002 (December), only one small population observed near left bank of the Bridge, 3 Km from Nechephu 27 KM toward Tenga Valley in Aka Hill area. ”, he says. Now the population has declined. Field surveys conducted by scientists at the Botanical Survey of India and Forest Department of Arunachal Pradesh since 2002 have failed to locate a second population of the same race of the plant elsewhere, said he. 

According to him, the new Highway Extension project carried out by the Border Roads Organisation (BRO) in the area, threatens the only known habitat of the plant. 

Present threats
According to a recent research paper published in the Journal of Threatened Taxa, the threats to the plant are multi-fold. The extension of the highway “has already started from the Bhalukpong area and is proceeding towards Aka Hill area.” says the study. Moreover, a hydroelectric project coming up in the area is also a severe threat to the existence of the plant, it says. 

According to the research paper, detailed explorations in the Aka Hills and neighboruing countries like Nepal, Bhutan and China has failed so far to report the plant. Currently, only two plants of the species are known to survive. Very less seed germination in the small population has already put the plant under threat while the habitat destruction has added to the rate of decline. 

The Darjeeling race
However, according to botanists, another race of the plant is present in Darjeeling hills, though they are not the exact race found in Aka Hills. Diplycosia indica, a plant found in Darjeeling, was earlier believed to be a separate species, but later identified as another race of Gaultheria akaensis.

West Kameng,  Arunachal Pradesh map, Aka Hill map
Location of West Kameng district in Arunachal Pradesh
 According to Dr. Panda, who has made extensive studies on the plant, the Arunachal Population (Aka Hill race) is somewhat different to that of ‘Darjeeling race’. “Arunachal race has ovate to ovate-elliptic lamina, but Darjeeling race has elliptic lamina”, which make them different, he said. Darjeeling race of Gaultheria akaensis has 4 to 5 smaller populations observed till date (Lame Dura, Meghma, Gairibus, Kaiankanta). According to Dr. Panda, Lamedura population is somewhat larger with 15-20 individuals.

Existence of different races does not decrease the threat to the Aka Hill race, say experts. There is a “need to conserve both races, but conservation of Arunachal race is urgently required”, says Dr. S. Panda.

Medicinal properties
Aka Hills situated in the West Kameng District is inhabited by Aka tribes. The tribes use the plant for therapeutic purposes. According to the study in the journal, the tribes mix the leaf extract of the plant with that of another plant to treat rheumatic and sciatic pain. “Tender leaf extract [of the plant] mixed with G. fragrantissima leaves (1:1) applied to cure acute rheumatic and sciatic pain by the Akas”, says the study.

 “Aka tribes used extract of leaves of this plant to cure rheumatic pain earlier. Now, they are not getting this plant for their use. But earlier (as per elderly tribal people at Jamiri) Akas used this plants. During that time the plant was abundant in and around Aka Hill area (may be 200-300 years ago)”, says Dr. S Panda

Possible alternatives
Though the road project is yet to reach the area where the plants exist, the threat is imminent, say researchers. However, according to them, making slighter change to the present extension plan can help save the plants. Instead of going for the present extension project, BRO may try repairing the earlier road stretch, suggests the researcher. 

“As the whole Aka Hill area is harbouring more than 500 Threatened taxa, so for the purpose of effective conservation, BRO should avoid road extension from SESSA to JAMIRI (40 KM), instead they can repair the earlier road without extension”, said Dr. S Panda. The presently proposed extension works may damage this area of high biodiversity significance, he added.

However, BRO officials were unavailable for comment. A mail sent to their official id was left unanswered. (We will update the story, once we get any response. Stay tuned.)

New Stone Loach Species Discovered from Silent Valley National Park


Far-famed for the silence of the cicadas(though now they are aplenty) and the endemic Lion Tailed Macaque, the Silent Valley National Park in Kerala, India has just got another endemic organism to its credits, when researchers identified a new species of stone loach from Kunthippuzha which flows through the National Park.
Balitora Jalpalli, new stone loach species, Kunthi River, Silent Valley, Western Ghat fishes
Balitora Jalpalli, new stone loach species  from Kunthi River in Silent Valley National Park
(Image Credit: Josin Tharian)
According to a study published in the Journal of Threatened Taxa, the new species of Stone loach differs from its close relatives in head length, caudal peduncle depth, maximum head width and in the number and pattern of bands on the dorsal side.  It has a different number of ventral fin rays and pectoral fin rays than its close relatives also.

Water Lizard of Kunthi River
The newly identified fish belongs to the genus Balitora, and is named as Balitora Jalpalli. According to the authors of the study, the fish was named so for its lizard like characteristics. 'Jal’ means Water and ‘Palli’ means Lizard in the local language, making ‘Jalpalli’ equivalent to ‘Water-lizard’. It “refers to the lizard like appearance of the fish, and its habit of clinging to the rocks in fast flowing streams,” says the study. According to the researchers who have conducted the study, the newly identified stone loach can be commonly called as Silent Valley Stone Loach as well.

The researchers were able to spot the fish from Valleparathodu, near Poochippara from the Kunthi River which is a tributary of Bharathappuzha, a major river in the state. According to the study, this habitat is a high altitude stream which is usually inhabited by other fishes like Mesonoemacheilus remadevii, Homaloptera pillai, Bhavania australis and Garra menoni.

Genus Balitora consists of 11 to 12 species of fishes so far among which two were reported from Kerala. The new species discovery makes the Balitora strength in state to three.

Conservation Significance of Western Ghats Rivers
The identification and description of B. Jalpalli from Western Ghats comes on close heels to a similar species discovery from Krishna River, yet another major river in Western Ghats. Researchers have identified and described another species of Balitora - Balitora Laticuda - from Krishna River in 2012. These new discoveries point out to the rich but unexplored aquatic fauna of Western Ghats Rivers and the exigency to conserve the freshwater ecosystem in the region.

However, habitat destruction is rampant in Western Ghats Rivers due to anthropogenic pressure. According to the study, immediate conservation efforts and taxonomic explorations should be carried out in the area to unearth the unraveled marvels of biodiversity here. “The description of one more species of freshwater fish from the Western Ghats reiterate our views that the ichthyofauna of the region continues to be poorly known and is in need of increased exploratory surveys and associated taxonomic research”, say the researchers.

Rajeev Raghavan and Anvar Ali of Conservation Research Group (CRG), St. Albert’s College, Kochi,
Josin Tharian of Laboratory for Systematics and Conservation, Department of Zoology, St. John’s College, Anchal, Shrikant Jadhav, Zoological Survey of India (ZSI) and Neelesh Dahanukar of Indian Institute of Science Education and Research (IISER) co-authored the paper in the Journal of Threatened Taxa..


Unethical wildlife photographers new threat to Slender Loris in South India



Slender Loris, Loris iydekkerianus,
Slender Loris (Loris lydekkerianus)
Image Courtesy: Kalyan Varma
Unethical shutterbugs have joined the league of black magicians and pet rackets as a growing threat to the existence Slender Loris, a small primate found in parts of South India, says a new research note published in the Journal of Threatened Taxa.

By surveying Kani tribes in Peppara wildlife sanctuary in Kerala and by analysing photos in a major Indian wildlife photography website, the study points out that unethical handling of Lorises for wildlife photography is rampant in South India. The practice could be one among the poorly documented threats to this smallest primate endemic to South India and Sri Lanka, says the study.

Slender Loris is a nocturnal primate, found in two subspecies- (Loris lydekkerianus and Loris malabaricus) in South India which are active only in the night and spend their whole day sleeping round as a ball. The nocturnal nature of these slow loris keeps it elusive and less accessible to wildlife tourists and wildlife photographers alike.

Arrange Loris photo-shoots, get paid!
According to the study, wildlife photographers in Thiruvananthapuram - the capital city of Kerala- pay Rs. 500 to 1500 to the indigenous Kani tribes in the areas to capture Slender Lorises and arrange photo shoots. The practice occurs despite the fact that the animal is protected under Schedule I of The Indian Wildlife (Protection) Act, 1972.

Apart from capturing and keeping it, the Lorises are often tightly held on short branches and prodded so that it won’t move during a photo shoot; to help the ‘professional wildlife photographer’ get enough good pictures. Moreover, the poor animal will be illuminated with torches aimed at it, says the study. It is a known fact that aiming strong light sources like torches and camera flashes at Slender Lorises for longer, will be irritating to the animal since it has very sensitive, large eyes to help their nocturnal life.

The study team has also noted that the animal captured for such photo shoots are not returned to the place from it was collected. In one incident, to which the team was witness, the animal was released next day to an isolated bamboo clump near the house, after the photographer getting enough pictures. The bamboo clump had no vegetation continuity to reach back to the place from which the Loris was collected, says the study. 
   Peppara Wildlife Sanctuary As seen from the dam
Shadow auror at English Wikipedia 
[GFDL or CC-BY-SA-3.0-2.5-2.0-1.0], via Wikimedia Commons 

As per accounts of the tribes, it is usual to get Loris with infants which are again treated the same way. Another respondent, says the study, has cut down at least four trees to restrict a Loris to a single tree so that it will not escape.

The research team has also noted that the tribes are so much familiarized with the practice that they hold the animal in different ways to help the photographer get very good angles.

It was while studying about the status of forest dwelling chelonians in Agasthyamalai region, that the research team came to notice the unethical wildlife photography practices.Arun Kanagavel, Rajkumar Sekar and Rajeev Raghavan  of  Conservation Research Group (CRG), St. Albert’s College, Cochin, and Cynthia Sinclair of Wildlife Information Liaison Development Society (WILD), Zoo Outreach Organization were part of the study team.

Money matters. well, more than tradition
However, from the study, it can be found that the tribes are not completely unaware of the conservation angle traditionally. Informal interviews with the kani tribes reveals that the tribes otherwise don’t prefer catching this insect eating, slowly moving primate, since it is believed to resemble their hill god (mala daivam). Connecting such organisms with the divine was an old, time-tested traditional trick of nature conservation in the Asian countries. The tribes also don’t keep Loris as pets since its looks are unpopular. They often consider it a bad luck to sight a Loris in the forests. Despite these beliefs, the money offered by photographers are luring the tribes to indulge in this unethical practices against their traditional beliefs.

Actually, the tribes take extra pain to do the business. According to the accounts, painful bites are a usual while capturing the primate. When kept in home, the animal has to be covered under clothes to avoid women in the house seeing it, since unmarried woman having a look at the Loris will stay a spinster throughout the life, as per traditional belief.

The cyberspace connection
To study the trend deeply, the research team has also surveyed the Loris photos available on a major Indian wildlife photography portal. They have found that majority of the pictures were taken during day time, with the animal in awakened position, often hinting blatant ill-treatment.

Out of the 28 cases they have studied, 16 involved mistreating the animal. 13 photographs of this nocturnal animal were taken during day. According to the study, the incidents of the unethical practice were more sighted in photographs taken from Karnataka.

Ethical aspects of Wildlife photography
The ethical guidelines in wildlife photography discourage forcing an animal from its natural conditions to get favorable pictures. Altering the habitat of an animal to get beautiful pictures is anything beyond the ethical grounds of wildlife photography. However, it is unfortunate to notice that majority of the wildlife photographers – both professional and matures- are less concerned about such ethical aspects of the trade.

“It is not this species alone that is facing threat. Instances of unethical photography inside the wildlife sanctuaries and core areas are growing,” said Balan Madhavan, wildlife photographer and a member of the International League of Conservation Photographers.According to him, Wildlife photography is part of nature conservation but these unethical practices by certain people are marring the very essence of it.

"(Most of ) those people engaged in this unethical practice are doing it for popularity. They are less concerned about wildlife or its conservation and are uploading those photos on social networking sites", said he. It is time to bring some kind of regulation to such unethical practices, he added.

Other Threats to Loris
However, the wildlife photographers are just an addition to the threats to the existence of this endemic primate.  Earlier studies have revealed that astrologers in South India use it for picking tarot cards. Like the Slow Loris, pet trade target Slender Loris also.  Practitioners of Traditional medicine also prefer loris since it is believed to have medicinal properties to treat a variety of ailments including leprosy . Some traditional medical practitioners also use the tears from Slender Loris to treat eye ailments and to prepare love potions. Illegal capturing and trading of lorises for all these purposes is a major threat to the life of this animal.


The story of finding the new stone Loach, Balitora laticauda: an interview


Western Ghats Rivers have a bounty of yet unknown aquatic fauna. Recently, a new member was added to the Indian aquatic fauna when a group of researchers found that a fish known to villagers living on the banks of Krishna River in Satara District of Maharashtra, is unknown to science. After conducting follow up studies and comparing it with already described similar species in India, they have established that it is indeed a new species. NeeleshDahanukar, IISER Fellow at the Indian Institute of Science Education and Research, Pune who was part of the research team, talks about the finding of the new stone Loach from Krishna River with Indian Biodiversity Talks.

Balitora laticauda, teh new stone loach found from Krishna River in Northern Western Ghats
Image Courtesy: Sunil Bhoite
It is indeed interesting to know that the Western Ghats Rivers still keep organisms new to science. Will you please tell us how your team happened to find the fish?

Sunil Bhoite, who is a naturalist working in Satara District, Maharashtra, first caught this species in 2009 and sent it to Dr. Shrikant Jadhav, a scientist in Zoological Survey of India, Western Regional Center, Pune. 
habitat near Krishna River bridge
from where Balitora laticauda  was found.
Image Courtesy: Sunil Bhoite

During our collaborative work on the freshwater fish diversity of the northern Western Ghats, Dr. Jadhav showed me this species as an interesting specimen of genus Balitora. In 2011, Dr. Jadhav and I had an opportunity to visit the ZSI headquarters in Kolkata during which we studied the comparative material of related species. We realized that the species of Balitora from Satara is indeed a new species, still unknown to science.

In collaboration with Sunil Bhoite, who collected more specimens of the species early this year, Dr. Shrikant Jadhav and I worked on the species description and the findings are now published in Journal of Threatened Taxa. We also received some additional specimens of this fish from another locality in the same river from Madhavi Chavan and comparative material of Balitora mysorensis from Rahul Kumar, which were very important in the study.

Though the fish is new science, it had a local name. Were the locals using the fish for any cultural or other purpose?

This fish does not have any cultural value nor does it have any food value. However, sometimes tribal people (called Katkari) catch these and similar hill stream loaches and sell them in the local fish market. The species, however, is rare and is only seldom seen in the market.

With your finding, it is clear that the Western Ghats Rivers still have aquatic fauna which is yet to be described. Considering the rapid pace at which Western Ghats water bodies are polluted, do you think many of these unknown species will stop to exist even before we find them?

In the recent IUCN report on the threats to freshwater diversity of the Western Ghats (http://data.iucn.org/dbtw-wpd/edocs/RL-540-001.pdf) it was suggested that about 60% of the total endemic freshwater fish species of the Western Ghats are threatened because of several anthropogenic stressors including  organic and inorganic pollution of the water,  biological resource use (food fish and aquarium trade), invasive species, residential and commercial developments and natural system modification.
Typical habitat of Balitora laticauda
Image Courtesy: Sunil Bhoite

Especially in the northern Western Ghats such rapid developments are highly uncontrolled and they are modifying the natural ecosystems posing severe threats to the aquatic biota. On one hand, while the habits of the freshwater fishes, especially the specialists like hill stream loaches that require fast flowing clear water with a good substratum, are getting lost or severely affected; on the other hand we are still discovering species new to science. 

Unless we take efforts for conservation of the habitats and keep a check on the various anthropogenic stressors, it is quite likely that several freshwater fish species will go extinct even before we know them and describe them scientifically. 

Is there any specific threat to the newly described species?

There are no specific threats in the vicinity of type localities of the newly described species. However, potential threats to the habitat include severe sand mining upstream of type locality and agricultural run–off entering into the river. Some organic and inorganic pollution in the area is contributed by the washing of cloths and vehicles. Some river stretches in the vicinity of the habitat also have human settlements which contribute to household wastes directly being added to the river water.


Indian researchers find a new stone loach, Balitora laticauda from Krishna River in Northern Western Ghats

Short URL for the story: http://goo.gl/Z6Ffo

Confirming the rich biodiversity potential of the Western Ghats biodiversity hot spot,  researchers have identified and described a new Stone Loach from Krishna River in Northern Western Ghats. The new fish which is named as Balitora laticauda or Palmas Stone Loach, was spotted from three different parts of Krishna River in Satara district of the Indian state of Maharashtra.


Balitora laticauda, Palmas Stone Loach, Western Ghats fishes
Balitora laticauda, Palmas Stone Loach, Western Ghats fish
Balitora laticauda or Palmas Stone Loach
Image Courtesy: 
Neelesh Dahanukar
The finding which is published in the latest issue of the Journal of Threatened Taxa, claims that the new fish is different from all known species of stone loaches, in its appearance and characteristics.

It has at least 7 most distinct characteristics from its closest relative B. mysorensis described from the Cauvery River in neighboring state of Karnataka in 1941. It has 10 traverse bands on the dorsal side while the caudal peduncle is deeper than that of the known, closely related species, says the research paper.

The new finding adds a 19th member to the Balitora genus which includes stone loaches found in the hill streams of south and south East Asia. The researchers have spotted the fish from the stream of Krishna River drainage at Venegaon Village, Urmodi River near Nagthane Village and from Khodashi village.


"I got one specimen (of the fish) through my student. By perusal of literature, I was surprised that the present species is quite unlike to its allied species. Meanwhile I came in contact with Sunil Bhoite, a naturalist from Satara and told him about the collection of more specimen from his locality. After one year, he caught some specimen from Urmodi river. After detailed study, I was sure it is new to science.", said Dr. Shrikant Jadhav, Zoological Survey of India, Pune, who described the fish.

New to science, but known to locals
Though the species is new to science, it was not so for the local people in the villages on the banks of the river. Locals call the fish ‘Palmas’ in Marathi which interestingly points to the appearance as well as behavioral characteristics of the fish. In local Marathi, ‘Pal’ means Lizard and ‘mas’ means fish, probably pointing to its lizard like appearance and its habit of clinging to the rocks in the river.

Balitora laticauda habitat, Krishna River
Habitat of Balitora laticauda
Image Courtesy: 
Sunil Bhoite

According to Neelesh Dahanukar, IISER Fellow at the Indian Institute of Science Education and Research, Pune, who was part of the research team, Katkari tribes used to catch this fish along with other stone loaches to sell in the local market. “The species, however, is rare and is only seldom seen in the market”, he said.

As per the research paper, the researchers have named the fish laticauda for its deeper caudal peduncle which makes it different from its close relatives found in India. Latus in Latin means ‘broad’ and cauda means tail.

Conservation significance
Despite getting attention from the scientific community, the life of Palmas stone loach may not be so easy in the face of rapid depletion of natural habitats in Western Ghats. Highly uncontrolled rapid developments are modifying the natural ecosystems, especially in the northern Western Ghats, posing severe threats to the aquatic biota, says Dahanukar. “Unless we take efforts for conservation of the habitats and keep a check on the various anthropogenic stressors, it is quite likely that several freshwater fish species will go extinct even before we know them and describe them scientifically. “, he says.

Pointing out that the fish lives in clear and swift waters of the streams with rocky bottom, the research paper also notes that the indiscriminate sand mining in the vicinity of the Krishna River can be a potential threat to the species.

Moreover, there is an urgent need to conserve the depleting habitat of the river since the research team hints that there could be more aquatic organisms here which are yet to be scientifically described. "There is also scope to discover some species from the region on which we are working.", said Dr. Shrikant Jadhav.

Read an exclusive interview here: The story of finding the new stone Laoch, Balitora laticauda