TWO TEACHERS WHO MOTIVATED ME VERY EARLY FOR LATER DAYS

22 Nov. 2024. Today morning, out of almost nothing, I remembered two of my teachers. One, Mr. Baishnab Raul and the other Major D. K. Nanda. Mr. Raul was my biology teacher for high school standards at Central School, Puri and Major Nanda was my Zoology Honours classes Head of the Department at S.C.S. College, Puri. Both of them certainly had given me orientation and the kick starts for research, and to become a speaker/author, respectively. 

At school, I was asked to do a science project on water imbibition by gram seeds. I did the experiment at home, with seeds, petri dishes, measuring jars, and so on, including some friendly onlookers to encourage me and see the scientist in me. I did produce the results before my teacher Mr. Raul. He liked it. Much later I understood that the subject related to micro irrigation. I never knew that after a few years I will be opting for a research project at my Master's stage at Utkal University. The project got into my mind and within a very short time, I stepped towards the life-long career of a researcher in wildlife.

At the College, to meet an assignment to speak on a topic at the Zoology Seminar Hall, I was asked a topic related to Lamarckism. I thought, I prepared and I presented it well. That was also a stimulation to become an author for popular science articles, which started materialising when I joined the crocodile conservation project as a research scholar at the Gharial Research and Conservation Unit, Tikarpada in 1975. Dr. H. R. Bustard, the FAO Consultant to Indian Crocodile project had asked us that we should write at least two to three popular science articles every year, besides making the usual out puts of research notes and reports,

When I recall these, I feel so elated that small orientations in our early life do create unspoken desire for the future.

GREETINGS DUE TO MELANISTIC TIGER (1993-94) FROM MR. BIMAL BHANJDEO, BARIPADA

While sorting a pile of papers this morning (22 August 2023), two envelopes each with a greeting card from 1993-94 slipped out like a God's gift for me. For many months I was searching for this card and Mr. Bimal Chandra Bhanjdeo for obvious reasons. They have sentimental attachment to the subject and Similipal. With and without help of molecular studies, science has revealed many truths in the past 30 years about colour types in tiger. I fondly continue to remember Mr. Bimal ji and people of Mayurbhanj. In the photo above, Bimal is stooping down to see the method of tracing a tiger pugmark. He participated in tiger census operation in Similipal sometime around 1995 as an unofficial member. 

At that time there was an instruction from Director, Project Tiger, Government of India, to involve non-official members in tiger tracking census. When we circulated the news, there were many many letters and applicants, including people from neighbouring states (Bihar/Jharkhand, Uttar Pradesh) and even from outside India. An elderly lady from Africa had joined in one year, and had gone happy with the experience the technique gave her.  

MULLER AN INSPIRATION FOR A COMPILATION

I purchased the (1962) genetics book on works of H.J. Muller on 26 Jan 1972 from a book exhibition. Then I was a student of BSc Honours. It impressed me that Muller's students had arranged the contents for publication in 1962. Between 1911 and 1961, in 50 years, Muller had produced a huge list of 336 pathbreaking titles either read or published. Again, sometime in 1990s, I had an occasion to look at Muller’s book. I got inspired and wished, to bring out a compilation of all my work. Between 1974 and then, I had completed spells of work across Mahanadi, Chambal and Similipal, and with species from aphid insects to crocodilians, large wetland fauna, the tiger and its associates, the elephant, etc. Now, as I prepare archiving my work and collections, I hope that a day will come in some shape when my wish will be fulfilled,

GHARIAL FAMILY RETURNS TO SATKOSHIA A SECOND TIME, INCHING TO IUCN GREEN LIST

The mother gharial with over 30 hatchlings, from previous night hatching, were seen on 12 May 2022 morning near Beherasahi of Satkoshia Gorge, River Mahanadi. This is the second consecutive year of breeding in recent years in Satkoshia. A very good news for crocodilian fraternity. If  the family is allowed an uninterrupted stay in Satkoshia, the Gorge will return to the glory of the long past. India's first crocodile conservation project was launched at Tikarpada in 1975 June, and the Satkoshia Gorge Gharial Sanctuary- the second PA of Odisha state, was declared in May 1976.  

Last year (2021), 28 hatchlings were seen with the mother at the same place, and I had to make a lot of effort to convince that the brood was not from a maiden clutch (which is normally from 10 eggs) but from a mother who has returned to the gorge taking advantage of tranquility and peaceful conditions brought and enforced upon the Gorge because of Covid restrictions imposed on human dimensions. The new set of staff, their elated anxiety, getting close with boat and air-borne camera, early rain and small flood saw the mother shifted out of the breeding place. After months, the adults returned to the breeding place, and the process has continued. The staff are cautious and have shown utmost refinements in enthusiasm. A researcher is at the location to keep track, a system which ensures better dedication and data collection. 

One biological inference from two seasons of 2021 and 2022, is that Mahanadi and Odisha are at a latitude, where gharial hatching takes place by middle of May. Mahanadi happens to hold the southernmost population of gharial demonstrating chances of viability. As we go north, the date gets shifted into Nepal habitats. Egg laying should have been in the middle of March.

Great scope for studying the natural history. The hatchlings should not be interfered or shifted away from mother. Let the flood and other natural hazards come, naturally for the gharial family. They will settle and perhaps attract a few more breeding adults from other parts of Mahanadi which skip getting noticed during survey observations.

I only wish that the Gharial enters the list of IUCN Green List 

Vulture post from my old website (2000?) at http://www.geocities.ws/laksingh33/new.html

 

 

Years back, about 25 years past (from 2000), I took a photograph of vultures attending a cattle on the roadside while returning to home in Puri. Somehow, it had aroused my curiosity perhaps a stimulation coming from the new Minolta Camera I was handling then. At that time I was not aware that such a sight shall ever be rare in future because vultures were neither very much liked nor in any manner in demand by the people.

Thus, it used to be a common sight then to find vultures attending carcasses. That used to be nature's own way of keeping the area clean and also perhaps to compensate the 'inappropriate systems of carcass-disposal' by humans.

The last such congregations of vultures I ever saw was in the banks of river Chambal during 1983-1985. Everytime, on our return trips to Rajghat from a day-long search for radio-fitted gharial, we used to see the vultures bathing, cleaning their wings and drying these spread open in the afternoon sun. Of course, they had some specified spots where they congregated.

After coming to Similipal in 1987, sighting a congregation of over 30 vultures have never been possible. As such, Similipal Tiger Reserve doesn't have any vultures. That has made it difficult to impossible to locate any animal-kill made by the carnivores. We have been linking the situation to the thick ground vegetation through which the vultures find it impossible to locate carcass and thus have remained off the 2750 sq.km area of the sanctuary.

Surveys outside the sanctuary, in the transitional zone of the Similipal Biosphere Reserve and outside it have indicated that vulture populations are on the decline.
Three species of vultures have been on record from the periphery of Similipal. These are the Black or King Vulture (Sarcogyps calvus), Indian White backed Vulture. (Gyps bengalensis) and Indian Long-billed Vulture (Gyps i. indicus). All three have become rare. This has been our own experience, and recently confirmed by a survey conducted by the Bombay Natural History Society.

DISCUSSION

Vultures are on the decline : it is a well realised fact. When I am asked about the reason for their decline, I can see the niche having been taken over by human scavengers. Man is a competitor with wildlife everywhere for everything, even for carcass. Man has learnt to use the skin and bones of dead cattle and even dogs. That is one reason why the city-outskirts or even the streets are easily swept clean of carcasses. With human habitations growing all around, leaving little space for vultures to survey and come down to ground, scavenging humans are perhaps doing the right service. When ecosystems are turning into "human systems", vultures have no other option but to give way to human system to 'prosper'. 

Postscript (28 October 2021)

(1) I understand new vulture species have been added to Similipal (Mayurbhanj). Prominent is, the Cinereous Vulture, may be an accidental migrant.

(2) Today, attended as Chairperson a webinar session of Rewa Science  College. The topic was on Vulture conservation in India, by Dr Anil Chhangani from Bikaner, Rajasthan. It was a very good talk, educative and eye-opening. Very few opinion may have gone for reasons for vulture decline, beyond diclofenac and nimesulide. But Dr Chhagani gave photo evidences of vulture deaths due to road accident, rail accident, cutting down of nesting trees (this was known), loss of water availability, and mining(!) etc. 

(3) Medicines will not be a problem, if sufficient water is available, he said. Yes, right. In Chambal we made notes on vultures from 1983-2016 along with other large birds. Six species of vultures have been recorded. Egyptian Vulture the most abundant. The trend may get published next month in Journal of Threatened Taxa.

(4) Dr Sudhakar Kar mentioned about 1000s of vultures coming to Bhitarkanika in 1970s, and now none. I feel, the change in water characteristics (salinity), removal of carcasses (food of vulture) for man-run industries, growth of human population and village amenities and cleanliness, are some of the reasons. 

It will be an interesting research topic to trace the history, fate and future of vulture in and around Bhitarkanika.  

 

GHARIAL: MAIDEN CLUTCH AND NEST SITE STRATEGY

Background to this blog. On May 19, 2021 28 gharial hatchlings were observed with a female in Satkoshia Gorge of river Mahanadi, Odisha state. The river stretch is in Satkoshia Gorge Sanctuary (1976) that was constituted under and a part of the national crocodile conservation project of Government of India launched with support from UNDP/FAO. 

While I congratulated the officers who have ensured to regulate habitat disturbances by people, I also mentioned that 28 hatchlings mean it is not the maiden clutch, and that the reproductive effort of the female in previous year(s) had remained unnoticed. 

This prompted me to look back on my data and interpretations on two subjects: 

(A) What is the minimum clutch size?  (1.) In my PhD dissertation (Singh 1978, Table-11) I provided data on 27 nests from rivers Narayani and Kali, Nepal relating to the years 1976 and 1977. Out of these, six nests had less than twenty-five eggs. As a practice in hatchery incubation, nest-wise we examine all unhatched eggs. There were three completely infertile nests with 10, 16 and 24 eggs. Out of the remaining three nests with 12, 18 and 16 eggs, the hatching success were 75, 16.7 and 50%.

(2.) Sunil L. Rajbhandari and Paras M. Acharya (2015, Report to Rufford) have reported the smallest clutch with just 6 eggs in 2014 and 18 in 2013, both at different places in Narayani river.

(3.) Tirrtha M. Maskey (PhD thesis, 1989), studying in Nepal, reported the smallest egg clutch of 16 in 1977, 18 in 1978, 14 in 1979, 14 in 1980, 30 in 1981, 31 in 1987. So, some movement or pushing out of the main congregation may be occurring to reduce competition in resource partitioning.

(4.) Khadka et al (2020, Herpetologica) have provide data on 151 Gharial nests over 17 years in sand banks along the Narayani (n = 94 nests) and Rapti (n = 57 nests) Rivers in Chitwan. Based on the range of clutch size given, the year-wise smallest clutch was with 21 eggs (2003), 11 eggs (2004), 23 (2006), 19 eggs (2010), 23 (2011), 7 (2012), 23 (2013), 6 (2014), 12 (2015), 16 (2016), 19 (2017),

(5.) Our team in Chambal observed 17 and 24 eggs as small clutches around a communal nesting site in 1985 (Rao and Singh 1992), but had not traced the season when they might have joined the congregation.

(B) Where does the gharial lay maiden clutch of eggs?   A mother gharial with her maiden clutch is smaller in size and lower in the hierarchical order. Such mothers may not find access to better nesting locations or communal nesting stretches used by mother gharials larger in size.

Such territorial behaviour at nesting site is seen from the time the ‘trial pits’ are dug before actual nest holes and laying of eggs. At a communal nesting site, the dominant mother takes possession of all hatchlings; others remain around, and the dominant male also joins in creche guarding. Perhaps it takes a couple of nesting seasons before a maiden mother is able to join the communal site.

 A two-year study in captivity at Ramatirtha in the outskirts of Similipal Tiger Reserve started in 1989 demonstrated strong territorial resource partitioning with mugger crocodiles when they go for basking day after day, or nesting year after year.

Conclusion  The clutch size can be as small as 6. Small clutches with 75% hatching success can be 12. Such small clutches will in all probability be away from communal nesting sites, for behavioural reasons and for reproductive success by the young females in the hierarchal order among gharials.

KEY WORDS: Gharial, Gavialis gangeticus, minimum clutch size, adaptation by young breeding female, hierarchal pattern   

Pangolin number and how to protect

Media in Odisha is always very active with wildlife-related news and have often reported information regarding seizure of Pangolin or its products. 

Pangolin is included in Schedule-I of the Wildlife (Protection) Act. 

On the World Pangolin Day (15 February), when asked, I had made the following points before local electronic media, and wish keep this in record here.

1.) Odisha Pangolin distribution and status: 

Except for the coastal region and mangroves, Pangolin occurrence is known from all districts. We do not have any knowledge about the exact or range of numbers of Pangolin surviving in the wild. 

2.) People living in and around forests, on their regular walk through the forests, may accidentally locate Pangolin scale and track, and go for the animal.   I have not heard about any organised search for Pangolin products in Similipal during my 16-years stay (1987-2003) in Similipal.

3.) Seizure of live Pangolin or scales, seen in media or from some particular Forest / Wildlife Divisions have caused serious concern. However, such seizures may indicate only a fraction of the thriving source for disposing or putting the Pangolin materials into the trade-link.

4.) I can see three possible ways to curb threats to Pangolin populations and their use in trade: 

(a) At the source,  at least stop or check 'free' or 'at will' or 'unguarded' access by people through forests of notified/intended Sanctuaries and National Parks; 

(b) Continuous awareness among people about Pangolin, the existing law for protecting them and punishing the offenders, etc.

(c) Continue with rigorous checks and seizures, as is happening in Athagarh Forest Division, and 

(d) Call for ideas and launch innovative awareness among consumers to stop use of Pangolin products, live or dry.