Features
THE K.N. SENEVIRATNE ORATION 2023
By Prof. Susirith Mendis
The 36th K.N. Seneviratne Oration will be held at the Facuty fo Medical Sciences, University of Sri Jayewardenepura on Saturday, November 18, 2023. It will be held in conjunction with the Annual Sessions of the Physiological Society of Sri Lanka (PSSL). The inauguration will be at 8.00 a.m. and the Oration begins at 8.50 a.m.
Much has been written on the life and work of Prof. Keerthi Nissanka Seneviratne by his academic colleagues, generations of his admiring students and those who knew him as a sincere friend. He is no stranger to the medical academic community in Sri Lanka.
Professor Seneviratne was born in Elpitiya, Galle on November 22, 1929 as the second son of Dr. Robert and Mrs Laura Seneviratne. Prof. Seneviratne came from a privileged family. His father, Robert Seneviratne was a doctor trained in Edinburgh, Scotland, where subsequently, Prof. Seneviratne obtained his research doctorate.
He had his primary and secondary education at Royal College, Colombo. He obtained his MBBS degree with honours in 1954 from the University of Ceylon, Colombo, gaining a distinction in Medicine and winning the Gold Medal for Operative Surgery.
After completing his clinical training as a young doctor, he joined the Department of Physiology of the Colombo Medical School on secondment as a Demonstrator in 1957. Due to his interest in research, he went to the UK and obtained his Ph.D from the University of Edinburgh. Having rejoined the Department of Physiology at the Faculty of Medicine, Colombo, he was promoted to the post of Professor of Physiology at the age of 39 in 1969 and was in the post until 1981.
I do not think it is necessary to reiterate to this audience, the highlights of Prof. Seneviratne’s unique and distinguish career that was cut short by the massive heart-attack he suffered in August 1986. His career highlights include, in particular, his exemplary research and teaching career at the Department of Physiology, Faculty of Medicine, Colombo; his pioneering, but short stint as the founder Director of the Institute of Postgraduate Medicine that has subsequently transformed into the Postgraduate Institute of Medicine; and his unfinished tasks at the South-East Asia Regional Office of the WHO in New Delhi. His ground-breaking efforts to bring postgraduate medicine into Sri Lanka amidst much opposition from the medical establishment has been grossly under-estimated and gone almost unrecognised. I consider it a ‘revolution’ of sorts that transformed postgraduate medicine in Sri Lanka.
The Institute of Postgraduate Medicine (IPGM) which later became the Postgraduate Institute of Medicine (PGIM) was established by Prof. K.N. Seneviratne in 1974 and he was the Founder Director until he was appointed as a Regional Advisor to the World Health Organisation in 1981. The tragedy of our times is that we do not recognise great pioneers, but do so of lesser men who tread the paths that have been cleared for them.
The photograph of Prof. K.N. Seneviratne does not hang on the walls of the PGIM as the founder of that institution (though by another name). My attempts to redress that injustice to Prof. Seneviratne while I was the Chairman of the Board of Management of PGIM fell on deaf ears. Perhaps, my attempts were too feeble and ineffective.
He earned the immense respect of his peers, as he was undoubtedly the ‘primum inter pares’ among them. He earned the respect of lesser men, not by his position or authority, but I believe, by the abundance of his innate humility, humour and humanism.
Prof. Seneviratne was different in many ways. He (and Prof. Leicester Jayawardene) came to work in white bush-shirts and often in sandals. Mark Twain, US humorist, novelist, short story writer and wit, once said that “Clothes make the man. Naked people have little or no influence on society,” Prof. Seneviratne and Prof. Leicester Jayawardene showed me early, contrary to Mark Twains dictum, that ‘clothes do not make the man’.
Of those who knew him intimately, Prof. Carlo Fonseka was perhaps, one of the closest. Prof. Fonseka’s description of him in “The Island” on 21 November 1987, to my mind, fits best and exemplifies the multi-faceted nature of his personality. I quote, “This large-hearted giant of a man was spontaneously self-effacing, consciously non-competitive, disarmingly non-aggressive and pathologically publicity shy.” Giants of men are a rare breed in any country. It is, perhaps, more so in ours. A giant in stature, character and personality is that much rarer. Prof. Seneviratne was one such very rare gentle giant of a man.
I have not found an explanation as to why Prof. Seneviratne chose physiology for his specialization and future professional career and not a clinical one, in any of the commemorative tributes and articles written of him. They all seem to assume that it was an obvious and natural choice with him.
I wish to believe Prof. Seneviratne’s strong research profile was fired by an urge to ‘search and find’ new information that had eluded medical researchers until then. Perhaps, He was also attracted to the discipline of physiology by the intrinsic scientific logic of its basic principles.
And therefore, what better way to comemmorate him than an Oration in his name by The Physiological Society of Sri Lanka?
This years Orator will be Professor Niranga M. Devanarayana, the Chair Professor of the Department of Physiology, University of Kelaniya. She graduated with MBBS from the University of Ruhuna and obtained her Doctor of Medicine Degree from the University of Kelaniya, and a PhD from the University of Amsterdam, the Netherlands.
Her main research interests include brain-gut axis, gastrointestinal motility disorders and functional gastrointestinal disorders. She has over 75 publications, including sevej book chapters and over 65 scientific papers in highly reputed indexed international journals. Her publications have received over 3000 citations, and her H index is 32.
She has presented more than 120 abstracts on a variety of topics on gastroenterology, both nationally and internationally. Previously she has delivered two orations. The Prof. C.C. de Silva Oration at the Annual Academic Sessions of the Sri Lanka College of Paediatricians 2010 on ‘Recurrent abdominal pain syndrome in children: A Sri Lankan perspective’; and the Dr. S. N. B. Talwatte Memorial Oration at the Annual Academic Sessions 2020, Sri Lanka College of Radiologists on ‘Non-invasive assessment of gastric motility using ultrasound’.
She has won many national and international awards for her contribution to research on gastrointestinal motility, including the prestigious award for the Junior Investigator in Pediatrics from the International Foundation for Functional Gastrointestinal Disorders (IFFGD), USA in 2013; KN Seneviratne Award for Physiology 2009; Hiran Thilakaratne Award for Medicine 2007-2009; and 10 presidential awards for research in Sri Lanka from 2008 to 2018.
She has served as the Director of the Research Centre, and chairperson of the Research Management Committee, Faculty of Medicine, and Chairperson of the Board of Study in Medical Sciences, Faculty of Graduate Studies, at the University of Kelaniya. She was a member of several editorial boards, including the World Journal of Clinical Pediatrics and the World Journal of Hepatology. She was also the President of the Physiological Society of Sri Lanka from 1999 to 2021 and secretary of PSSL in 2010.
In this year’s KN Seneviratne oration, the orator, Professor Niranga Devanarayana will talk on ‘Gut-brain communication: a mysterious hidden dialogue’.
(The writer is Senior Professor of Physiology, General Sir John Kotelawala Defence University & Emeritus Professor, University of Ruhuna.)
Features
Samarawickrama’s rise gives Sri Lanka a second pillar
Harshitha Samarawickrema was 14 when Sri Lankan women’s cricket first pricked the national consciousness. She had already been playing cricket for her school, Gothami Balika Vidyalaya, but had largely pursued cricket merely for the sake of playing a sport, and also because she had enjoyed watching the men’s team play. But watching Sri Lanka defeat England in a thriller at the 2013 World Cup stirred up a deeper yearning.
“I’d watched all of the matches at that World Cup actually – that was the first time those kind of matches were telecast,” Samarawickrama said once. “That’s when I decided I was going to play and win matches for Sri Lanka one day.”
That victory against England was a new dawn for Sri Lanka’s women for two reasons. First up it was the highest-profile victory on their ledger until then, marking an unexpected high point in a World Cup in which little was generally expected of the team. But it also marked the rocket-powered arrival of Chamari Athapaththu, who top-scored with 62 to help set up the chase.
Thirteen years later, Samarawickrama has not only fulfilled her promise to herself, she has also helped Sri Lanka bring to life the promise of that 2013 campaign. Athapaththu, who has since has become the superstar around which Sri Lanka’s cricket orbits, has never known a more consistent batting collaborator than Samarawickrama. In T20Is, the pair have put on 1,202 runs together – easily the best for Sri Lanka. Though both are lefties who revel in pressure, that’s about where the similarities end – Athapaththu having grown up idolising the big-hitting of Sanath Jayasuriya, while Samarawickrama had been a disciple of the Kumar Sangakkara school of left-handed batting. (Samarawickrama still tries to replicate that famous bent-kneed cover drive, though she invariably sprinkles a little of of her own flair to the endeavour.) Oppositions have found this combination difficult to contend with, Athapaththu commanding through the legside and brutal on errors of length, while Samarawickrama flits around the crease and carves boundaries through cover and point.
It has been clear for years now that Sri Lanka’s chances in pretty much any match depend primarily on Athapaththu runs. But Samarawickrama’s advance as a T20 batter has now opened up a new frontier in the team’s batting performance. Ideally, what Sri Lanka want is not merely big runs from their captain, but a strong partnership between Athapaththu and Samarawickrama. In victories, the Athapaththu-Samarawickrama stand averages 41.38.
More tellingly, a good Samarawickrama innings has become as reliable a predictor of a strong Sri Lanka showing as a good Athapaththu innings. In T20I wins, Athapaththu averages 40.18 and strikes at 131, in comparison to 17.94 and a strike rate of 94 in losses. Samarawickrama’s corresponding numbers are even more stark. In Sri Lanka victories, Samarawickrama averages 44.08 with a strike rate of 109. In losses those numbers are 16.94 and 87. Other Sri Lanka batters have leveled up in recent years too – Kavisha Dilhari, Nilakshika Silva and Hasini Perera having become more frequent contributors, while 20-year-old Vishmi Gunaratne has also showed promise. But 11 years into her international career, Samarawickrama now has a serious body of work.
Samarawickrama had been modest in the shortest format in 2025, but she arrives at the Women’s T20 World Cup 2026 having had a good six months. Against Bangladesh in April, Samarawickrama had cracked 61 off 35, then 49 off 29, in back-to-back matches that Sri Lanka won (Samarawickrama was top-scorer on both occasions). This was in addition to having put up good numbers in the ODI series that preceded the T20Is. Her 36 not out off 34 in a comfortable warm-up win against Netherlands suggests she is still riding on that form.
This is the first T20 World Cup in which serious runs are expected of Samarawickrama, and if history is much to go by, she is not the sort to be daunted by occasion. Samarawickrama’s finest moments as a Sri Lanka cricketer had come in their most-celebrated win of all, in the Asia Cup final of 2024, against India. Typically, that chase of 166 in Dambulla had been propelled by an 87-run Athapaththu-Samarawickrama stand, but when Athapaththu was dismissed, Samarawickrama ensured she remained at the crease until the winning moments, hitting 69 not out off 51, ultimately collecting the Player-of-the-Match award.
If 2013 was a new dawn inspiring a fresh generation of Sri Lanka cricketers, 2024 was the year in which the team hammered its stake into the ground, breaking through into an entirely new galaxy of recognition and acclaim at home. Frequently batting in the shadow of Athapaththu, but always charting her own path, Samarawickrama has grown into a leader.
[Cricinfo]
Features
US’ anti-migrant stance set to intensify tensions in Western camp
The announcement by the US authorities of an anti-migrant stance during a recent commemoration in France of the epochal D-Day Landings of June 6, 1944, ought to strike impartial observers as a supreme irony. Whereas what should have been expected was a vibrant celebration of the beginning of the process of Western Europe freeing itself decisively from Nazi or fascist control during the crucial stages of World War Two, this was not to be.
What the world heard instead was a call to contemporary Western Europe to arm itself against a seemingly rising and threatening migrant presence in the region. In other words, the migrant must be despised and ‘shown the door’.
Instead of a commemoration that rejoiced in the flourishing of liberal democracy and its values what one got was a strong affirmation of fascism and racial chauvinism. US Defense Secretary Pete Hegseth vented his spleen against the migrant or foreigner presence in Europe reportedly thus: ‘Sadly today different European beaches are stormed by different dangerous ideologies.’ To ‘beaches in Spain and Italy and Greece and Bulgaria, boats and men arrive. When will European capitals do something about that invasion?’
While at the outbreak of World War Two it was Nazi Germany that was doing the invading and bringing some principal European countries under its suzerainty, this time around we are being given to understand that it’s migrants to the West who are seeking to colonize the latter. It goes without saying that such inflammatory rhetoric would have the deleterious effect of keeping racial tensions alive in the West and jeopardize all possibilities of the countries concerned cementing and maintaining social stability.
The Trump administration gives the impression of taking a leaf from the politically underdeveloped regions of the South to keep the US polity stable and united. In South Asia, for instance, we are not short of ambitious demagogues who use what is referred to as the ‘race card’ to gather unto themselves a following and thereby further their political fortunes. By seeking to stir and sustain anti-migrant hysteria, the Trump administration is also essentially replicating Nazi Germany’s policy of anti-Semitism. That is, fascism is very much alive in the US under President Trump.
Such efforts at churning racial hysteria at this juncture in the US should not come as a surprise. For all intents and purposes, the Trump administration is nowhere near achieving its aims in West Asia, for instance, in the short term. It has failed to bring Iran down to its knees, as it hoped to do, but is adopting the expedient of keeping the world guessing and confused on what it is doing in the region, since it cannot withdraw from the theatre in a hurry without losing face.
While perhaps working out an escape strategy the Trump administration it seems, is hoping to maintain its following at home intact and silent by playing on their racial biases and insecurities. Hence, the anti-foreigner campaign.
Simultaneously, the Trump administration will need to keep a close eye on how economic pressures on the domestic front are panning out. Anti-administration sentiments first break to the surface at meal tables. On this score, the news cannot be good because the average US family’s spending power ought to be shrinking on account of rising energy and oil prices. Consequently, it would not be a bad idea to keep the attention of the US consumer diverted by adeptly playing ‘the race card’; once again, lessons from intellectually bankrupt Southern politicians are coming in handy.
To be sure such comparisons many politicians in vibrantly democratic countries would find quite unflattering. But the stark truth is that racism cannot be tolerated in civilized societies and those politicians who resort to it risk being branded as racists of the first degree. In fact they could be seen as being on par with the likes of German dictator Adolph Hitler and his close collaborators.
However, on the question of migrant policy the Trump administration would likely be at polar opposites with the most vibrant of liberal democracies of the West. This will be the case with the UK, France and Italy for instance. The latter continue to keep their doors open to legal migrants and they are likely to view a virtual blanket ban on migrants as reprehensible.
Moreover, in the foremost democracies of the West debates are vibrantly ongoing on the need to keep racism or any hint of it completely outlawed in the public plane. There is the case of the UK, for instance, where the authorities continue to emphatically pinpoint their adherence to the principle of anti-racism in the conduct of public affairs.
One proof of the above was the parliamentary debate relating to the killing of 18-year-old Henry Nowak in Southampton. Police handling of the victim came in for sharp scrutiny by particularly the opposition in the House of Commons but there seemed to be a consensus over the main political divide that the matter should not be politicized.
Moreover, the UK authorities stressed in the House the government’s strict adherence to the policy of non-racism. It was also pointed out that British institutions set up to manage racism at the national, county and neighbourhood levels, for example, were very much intact. In fact, Sri Lanka could gain considerably by studying and implementing locally, legislation modeled on the relevant UK laws if it is in earnest when it speaks of ‘reconciliation’.
Accordingly, it is highly unlikely that Western Europe would ‘cave in’, so to speak, to US pressure on issues related to migration. The liberal democracies of Western Europe in particular would remain for the foreseeable future migrant-welcoming, multi-ethnic and plural democracies.
Nor is it likely that Western Europe would be passively receptive to US demands that it drastically increases its defense spending to meet the latter’s aims. Within the Western fold the EU is remaining committed to backing Ukraine, for instance, in its ongoing armed resistance to the Russian invasion and it is not giving any indication of being deferent to US pressure.
However, although tensions would continue to bristle within US-Western Europe relations on the above and numerous other matters of contention it would be far too premature to announce a parting of company between the two sections of the West. In that sense, the post-World War Two order remains essentially intact. There are still many things in common between the two, particular on the economic plane, that will ensure the continuance of the partnership.
Features
A decade among Yala’s ghosts of gold
The first rays of dawn creep over the ancient rocks of Yala. The Indian Ocean glimmers in the distance, and the wilderness slowly awakens. Somewhere amid the scrub jungle, a pair of amber eyes scans the landscape.
For wildlife conservationist and leopard researcher Milinda Wattegedara, moments such as these have defined more than a decade of dedication to one of Sri Lanka’s most iconic creatures—the Sri Lankan leopard.
What began as fascination evolved into a remarkable conservation journey that has transformed the understanding of Yala’s leopard population and placed Sri Lanka firmly on the global wildlife research map.
“Long before I ever lifted a camera, leopards had already captured my imagination,” says Wattegedara. “What fascinated me was not merely their beauty but the complexity of their lives—their hunting strategies, movements, reproductive behaviour and their remarkable ability to adapt to changing environments.”
That fascination led to the birth of the Yala Leopard Diary in 2013, an ambitious long-term project dedicated to documenting individual leopards and unraveling the mysteries surrounding their lives.
For many visitors, a leopard sighting is a fleeting thrill. For Wattegedara and his team, every encounter is a chapter in an ongoing scientific story.
“Each photograph was never the end of an encounter,” he explains. “It was the beginning of deeper questions. How did a particular leopard use the landscape? How did its behaviour change with the seasons? What environmental pressures shaped its decisions?”
These questions drove years of meticulous fieldwork. Every sighting was carefully recorded with details including location, habitat, behaviour, date and time. Photographs were analysed to identify individual animals through unique spot patterns, allowing researchers to distinguish one leopard from another with remarkable accuracy.
What followed was groundbreaking.

YF77 “Shelly” pauses in quiet observation, embodying the alertness
and grace that define Yala’s leopard population.
From 2013 to 2026, the Yala Leopard Diary identified an astonishing 189 individual leopards within the Yala Block 1. The research revealed a leopard density of approximately 0.524 leopards per square kilometre, making Yala one of the highest leopard-density landscapes ever recorded anywhere in the world.
Such findings have elevated Yala’s status among global wildlife researchers.
Nestled between the Indian Ocean and a mosaic of habitats, ranging from rocky outcrops to dense scrub forests, Yala offers an ecological stage unlike any other.
Here, leopards are photographed silhouetted against ocean horizons, perched atop ancient granite formations, resting on tree branches and stalking prey across sunlit grasslands.
The images tell stories of extraordinary lives.
There is Haminee, a devoted mother navigating the challenges of raising cubs in a competitive landscape. There is Lucas, one of Yala’s most frequently documented males, striding confidently across the Gonalabba Plains with the vast ocean forming an unforgettable backdrop.
There is Ruki demonstrating the species’ incredible strength by hoisting prey onto branches, and Shelly, quietly surveying her surroundings in a moment of feline vigilance.
Together, these individuals have become familiar characters in a living wilderness drama.

YM31 “Ruki” secures prey on a branch, illustrating the remarkable strength and coordination of the Sri Lankan leopard.
Recognising the immense value of long-term documentation, Wattegedara joined forces with fellow researchers Dushyantha Silva, Raveendra Siriwardana and Mevan Piyasena to establish the Yala Leopard Centre in 2020.
Located at the Palatupana entrance to the Yala National Park, the centre is believed to be the world’s first information facility dedicated exclusively to leopards.
“The centre serves as a repository of knowledge, accumulated through years of observation and research,” Wattegedara says. “Our goal is to connect visitors with the science behind conservation and foster a deeper appreciation of these magnificent animals.”
The project’s impact extends far beyond Sri Lanka’s borders.
Research arising from the Yala Leopard Diary has been published in internationally recognised scientific journals. One study introduced an innovative framework for identifying individual leopards, while another documented an extraordinary and previously unrecorded case of a leopard cub being consecutively adopted by two different adult females—first a relative and later an unrelated leopardess.
The discovery attracted international scientific attention and highlighted the complexity of leopard social behaviour.
Yet for Wattegedara, the most important lesson remains one of humility.
“One conclusion has become increasingly clear,” he reflects. “Our understanding of these leopards remains far from complete. We are only beginning to understand how they live, adapt and persist in one of Sri Lanka’s most dynamic protected landscapes.”

YF15 “Hope” descends Rukvila Rock at dawn, showcasing the agility and adaptability of Yala’s leopards.
His words underscore an essential conservation truth: the more we learn about nature, the more mysteries emerge.
As Sri Lanka navigates growing environmental challenges, the Yala Leopard Diary stands as a shining example of what sustained observation, scientific curiosity and public engagement can achieve.
Beyond the stunning photographs and remarkable sightings lies something even more valuable—a growing body of knowledge capable of informing future conservation decisions and ensuring that future generations inherit a wilderness where leopards continue to roam free.
For more than a decade, Wattegedara and his colleagues have followed the tracks of Yala’s elusive predators through dust, rain and scorching heat.
Their work has revealed that every leopard has a story, every sighting has significance and every photograph can contribute to conservation.
And perhaps, most importantly, it has reminded us that the golden ghosts of Yala still have many secrets left to share.
By Ifham Nizam
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