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For the Leopard

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The leopard is the most widespread of all the big cats. The typical form came from Egypt. Its present range extends from sub-Saharan Africa across the Arabian Peninsula into the Indian subcontinent, including Sri Lanka and further eastwards to China, Korea, Peninsular Malaysia and Java. It was the Swedish Botanist, Carl Linnaeus who first gave the leopard its scientific name, Panthers pardus in 1758. Given the leopard’s wide geographical distribution, a number of subspecies have been described since then.

Deraniyagala (1949) recognized the Sri Lankan leopard as a separate subspecies, Panthera pardus kotiya on the basis that it differed from the mainland form, Panthera pardus fusca by its smaller size and longer tail. Fernando (1964) found no justification for such a distinction, yet recent DNA based genetic studies by Miththapala and others. (1991,1992) have confirmed the genetic distinctness and validity of the Sri Lankan subspecies.

Sri Lankan leopards are characterized by decreased genetic variation in comparison to those in India. They are believed to have been isolated on the island for about 10,000 years. The confirmation of the Sri Lankan leopard as a distinct subspecies is important, as it makes it all the more imperative that proper measures are adopted to conserve it, and its habitat. As this is the only large, spotted felid in Sri Lanka, it cannot be confused with any other wild animal.

The pelage colour is usually golden-tawny or rufous-brown covered with open rosette-like black spots, whose size varies with the age of the animal: the spots are usually larger and farther apart as the animals get older. No two leopards have the same pattern of spots. Older animals often have lighter skin. The rosettes in leopards lack the additional black spots inside, which distinguish them from the Jaguar Panthers onca.

Unlike the tiger Panthers tigris, leopards frequently produce a black or melanistic variety, known as “Black Panther” which is rare in Sri Lanka. They are caused by a recessive gene and are more numerous than the conventionally coloured form in the humid rainforests of Peninsular Malaysia. Melanistic leopards are rare in East Africa, perhaps due to the limited extent of forests. Leopards from arid areas tend to be paler than those from humid forests.

Both melanistic and normal coloured young appear in the same litter. Although albinos among leopards are known, they are extremely rare. In Sri Lanka, at the turn of the century, the leopard was very common especially in the forests of the low country. It ranged from sea level to an altitude of over 2,000 m in the Horton Plains. More recently, a combination of forest conversion and poaching has substantially reduced both the number and range of the leopard in Sri Lanka, and today viable populations occur only within protected areas.

The key conservation areas where leopard are still found in Sri Lanka are: Gal Oya National Park, 62,936 ha; Hakgala Strict Nature Reserve, 1,142ha; Horton Plains National Park, 3,160ha; Hurulu Forest Reserve 26,012ha; Lahugala-Kitulana National Park, 1,554ha; Maduru Oya National Park,58,850 ha; Minneriya National Park, 8,889ha; Peak Wilderness Sanctuary, 22,380ha; Ritigala Strict Nature Reserve, 1,528ha; Ruhunu National Park, 126,782ha; Sinharaja National Heritage Wilderness Area, 8,864ha; Somawathiya Chaitiya National Park, 37,762ha; Thirukonamadu Nature Reserve, 25,019ha; Ude Walawe National Park, 30,812ha; Victoria-Randenigala-Rantambe Sanctuary, 42,087ha; Wasgomuwa National Park, 37,063ha; and Wilpattu National Park 132,317ha. Thus, the leopard’s range includes a total of 624,484 ha, 78% of the island’s protected area.

Leopards of the low country in Sri Lanka are in general larger than those found in the hills. The leopard is an extremely adaptable predator. It is a great wanderer over a given area, and like other forest animals that live a nomadic life, must remain inconspicuous while it sleeps as well as while it hunts. In Sri Lanka leopards occupy a variety of habitats, that range from the dry, semi-arid thorn scrub in the lowlands to the dense montane cloud forest at altitudes of over 2,000m. The only habitat which the leopard is unable to cope with is outright desert.

Today, in Sri Lanka, as human settlements and farming encroach into what used to be wilderness areas, the leopard finds itself with its back against the wall, except in protected areas, and in the hills. This ability to survive in higher altitudes is an advantage for the leopard as the human imprint becomes conspicuous in the lowlands. However, it is essentially a forest animal: even those adapted to semi-arid conditions appear to have a physiological need for shade during the heat of the day. This explains why it is not often encountered in the wild at mid-day. In areas where the leopard has learned to fear man, it becomes much more cautious and nocturnal.

Unless accompanied by dependent young the leopard is generally solitary: 81% of the observations made by Eisenberg & Lockhart (1972) in Wilpattu National Park were of solitary animals, while pairs accounted for only 19%. When undisturbed, the leopard spends a considerable part of its daily activity on the ground, seeking refuge in trees at times. In Ruhunu National Park, it often uses the rocky outcrops of Kotigala and Jamburagala in Block I as vantage points. Much of the daytime is spent dozing, either in the dense scrub, or draped over a stout branch of a tree.

Leopards Crossing the Buttala Kataragama Road Milinda Wattegedera
of the Yala Leopard Diary

Leopards have excellent night vision, and hunt relying very largely on sight. Although the leopard is often considered to be a nocturnal predator, this generalization may not be strictly valid across the range of the species. In areas where poaching is intense, the leopard is certainly more active at night and becomes highly secretive. It becomes more nocturnal only in areas where it feels insecure by day, as a result of human harassment or disturbance by other carnivores. But within many of the protected areas in Sri Lanka, the leopard appears to be the least nocturnal of all the worlds big cats.

The leopard is a more opportunistic predator than any other felid and will attempt to kill any prey it comes across. Despite its relatively small body size, the Sri Lankan leopard is capable of taking large prey, and is extremely adaptable to changes in prey availability. In general, female leopards with cubs are more successful in killing their prey than males. Larger prey is taken predominantly by the females when they are lactating.

Leopards sometimes carry their kill and rest it on a branch of tall tree in order to avoid the unwelcome attention of other predators such as jackals and crocodiles. In the Serengeti National Park in East Africa, leopards are known to climb trees with a 150 kg Grant’s gazelle clamped between their teeth. Leopards prefer prey in the 20-70kg size category, with an upper limit at about 150kg, two or three times the weight of the cat itself.

Females also use their slightly smaller home ranges more effectively in capturing prey. However, should the prey density become very low, they would range over a wider area, since the behaviour of female felids is usually more closely keyed to resources, given their responsibility of raising young. Both females and males spend a substantial part of their time locating and capturing prey, especially during the night.

The classic hunt consists of stalk, chase and kill. Stalking distances vary according to prey type, and as far as the male leopards are concerned, they increase as the prey size increases. In captivity, leopards are fed 1-1.2 kg of meat per day or 365-438 kg per year. On the assumption that on average 25% of a kill consists of inedible portions, Schaller (1972) suggests that a leopard may need 487-584 kg of meat per year to survive in the wild.

But according to Turnbull-Kemp (1967), a leopard can eat from between 8.1-17.6 kg of meat in a 12 hour period. This factor perhaps explains why the leopard is catholic in its food habits. Foraging effort per individual also varies seasonally, with prey being relatively easily captured during the dry season. Although the leopard’s principal prey in Sri Lanka is the Spotted deer Axis axis, several other herbivores may function as buffer prey items.

The leopard always kills its large quadruped prey by seizing it by the throat with its teeth and then grasping it firmly round the neck and shoulders with its strong forelegs, and commences feeding on the soft parts in the belly first. Unless disturbed, it will stay by its kill until all the edible portions have been consumed.

In a study of 183 leopards, Amerasinghe et al. (1990) found hair of 12 genera of mammals, highlighting the fact that the leopard is more diverse in its food preference than was presumed before. Their study shows that in addition to the spotted deer, other mammals such as the wild boar Sus scrofa, mouse deer Tragulus meminna, black-naped hare Lepus nigricollis and even water buffalo Bubalus bubalis are also eaten by the leopard.

It is especially interesting to note the capacity of the leopard in Sri Lanka to subsist at times on much smaller prey such as rodents, frogs, snakes, and birds, when its usual prey are scarce. According to Eisenberg & Lockhart (1972), buffalo calves are rarely taken because of the vigilance of the cows. Occasionally, the leopard may eat carrion. In one instance, two leopards were seen feeding on an elephant carcass in Ruhunu National Park. One of the more significant observations regarding the leopard’s diet is the almost complete absence of domestic livestock, even from areas close to human settlements.

CONSERVATION: Leopards are an integral part of the food chain, and an unobtrusive part of the ecosystem, valuable both for their ecological role and for their exquisite beauty. The greatest threat to any wild cat comes from the increasing use of poison in agricultural areas. Hoogerwerf (1970) considered the critical element in the decline of the Javan tiger to be poison, almost certainly the work of agricultural settlers, for whom the predator is an unwelcome visitor. As Myers (1976) points out, given its propensity for scavenging, the leopard is more susceptible to taking poisoned meat.

Leopards are also widely poached for their skins, even within protected areas. Poaching still continues to be a threat throughout the leopards’ range in Sri Lanka. A 100 years ago, Clark (1901) estimated the number of leopards in the island to be about 1,660. At the beginning of the twentieth century at least 50% of the land was forested. Since then forest cover has declined to less than 23% of the land area.

The leopard is seriously affected by deforestation and the consequent loss of habitat. Given the low overall population, the leopard may be among the most seriously endangered species of large mammal in Sri Lanka. Viable conservation areas that support the leopard in Sri Lanka, and the establishment of connecting corridors, must be of sufficient size to ensure that at least minimum populations exist within their boundaries.

The article by late Professor Charles Santiapillai is extracted from the publication “for the leopard’



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Features

‘Lord Edgware Dies’

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It has been some time since I read an Agatha Christie, the plot of which I cannot remember. So, I was delighted to find on the shelves of a friend Lord Edgware Dies, which I had a vague memory of, but no certainty about who had done it.

When I read it, I found that my memory of who was probably the killer was correct, but I could not be certain and the red herrings Christie threw in were so diverting that until almost the very end I wondered if I had been wrong.

The plot is very simple. Jane Wilkinson, who is married to Lord Edgware, tells him that she is desperate for a divorce since she is in love with a very proper Anglo-Catholic peer, Lord Melton, but Edgware refuses to divorce her. She asks Poirot to talk to him, which he does, and is surprised to find that Edgware has told Jane he is prepared to give her a divorce. This was, after he had categorically refused, through a letter, which Jane said she had not received.

That night Edgware is murdered, after Jane had been to see him, or so the butler said, and also Edgware’s secretary. But Jane had been that evening at a grand dinner many miles away, where a dozen fellow guests could swear to her presence.

There was a solution however to the mystery of two Jane Wilkinsons, namely a skilful impersonator called Carlotta Adams who, in the opening chapter had impersonated Jane Wilkinson, who had also been at the performance. But when Poirot goes to see her, he finds that she had been found dead on the morning after Edgware had been killed, of an overdose. And in her bag was a gold case, with a strange inscription, that contained the drug, along with a pair of pince-nez.

Her maid said she had written a letter to her sister in America and posted it the previous night. Poirot asks Inspector Japp to get the letter, and a transcript is received from America, and in it the name of Edgware’s nephew Ronald Marsh is mentioned; he had taken Carlotta to dinner after her performance, with which the book opens, and had then set her a challenge. Japp arrests Marsh, but Poirot is not happy and asks for the original of the letter, which the sister sends him. That shows that a page is missing, and the tear is obvious, though that raises the question as to why it had not simply been cut.

Matters are further complicated by the fact that Marsh had gone in a taxi to the Edgware house, along with Edgware’s daughter Geraldine, in the interval of an opera which had previously seemed to provide them with cast iron alibis. Geraldine had gone in to fetch her pearls so that Marsh could raise money he needed, and thus had an opportunity to kill Edgware, as did Marsh, for the driver said he had got out of the taxi while waiting and gone into the house.

Agatha Christie

Marsh explained why he had gone to the house on the night of the murder as having followed Bryan Martin, an American actor, who had been in love with Jane, whom he saw go into the house with a key. But there was no one visible when he entered, and Geraldine almost immediately came down and they left together. And Martin too has become an object of suspicion to Poirot, for he had been to see him before the murders were discovered with a story of being followed by a man with a gold tooth – a story Poirot immediately realized was false when he was asked how old the man was, and was told he was young, for young people did not have gold teeth.

A heap of French money Edgware had got for a trip to Paris was missing, but since Marsh had no need for it after his cousin’s offer of help, Poirot deduces that it must have been taken by the butler, who has disappeared. Christie has stressed that he is astonishingly handsome, unusual in a butler, and Poirot notes a resemblance to Martin, so he thinks the mysterious man going into the house must have been him.

Incidentally, later Poirot assumes that Edgware’s change of mind was because he was involved in some scandal, and I believe Christie intends us to see the cause of this in his handsome butler, though this is not specified.

Meanwhile, Poirot has asked Japp to find out the provenance of the case found in Carlotta’s handbag, and it turns out to have been made in Paris, specially commissioned, and collected by a woman with pince-nez.

But then another murder occurs—that of another guest at the grand dinner, which provided Jane with her alibi. The victim is an actor who had been bemused when Jane, at a lunch, thought the Judgment of Paris referred to the city. He told Hastings he wanted to see Poirot, but was killed before he could get to the appointment. Poirot had rushed there when told about his request, but it was too late.

Meanwhile, Poirot has tried out the pince-nez on Edgware’s secretary, but she could not see through these. It was only a chance remark heard outside the theatre that led him to try them out on Wilkinson’s maid Ellis, a spare pair that had been appropriated for the night of the murders.

Poirot then lays things out, having summoned Martin and told him that he probably suppressed Edgware’s letter, as he had been dropped by then and he did not want Jane to marry another. But after teasing Martin, Poirot says that Jane was in fact the murderer, and she got Carlotta to impersonate her at the dinner while she went to the house and killed her husband. After meeting Carlotta later and checking with her through a call that she had not been rumbled, Jane had gone ahead with the murder – she put veronal into her drink and the case with veronal into the handbag. She forgot to take out the pince-nez she had used earlier to imitate an American. Carlotta had registered as the American in a hotel and Jane had gone to see her, and there they exchanged identities. After seen the letter, she made use of it by tearing off the page that referred to her, and the S of She, so that the person who had challenged Carlotta to impersonate her seemed to be a man.

There is a coda in which Jane, condemned to death, writes to Hastings, still full of pride at her ingenuity hoping she will be remembered.

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Desilt reservoirs, learn from our ancient irrigation systems

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Polgolla

by Prof. O. A. Ileperuma

Silting of reservoirs is a major problem today affecting our hydropower production and irrigation systems. The main Mahaweli reservoirs are silted to a considerable extent reducing the water holding capacity of them. Due to poor soil management practices, floodwaters deposit large amounts of silt in these reservoirs. When the Polgolla reservoir was fully drained about two years back, one could see mountains of silt in the lower reaches of the reservoir. A rough estimate is that 50% of the total capacity of these reservoirs has been lost to siltation. This is a serious issue which affects not only power and agriculture but also flood control.

Our ancient irrigation systems ensured that desilting of reservoirs took place under royal decree where all users of the reservoirs were ordered to carry out desilting of reservoirs during the dry season. The clay thus collected was used in making bricks for the construction of great stupas which dot the landscape of our ancient kingdoms. This ensured that the reservoirs had their full capacity filled with water for the next cultivating season. Our ancient kings were clever enough not to construct reservoirs by blocking main rivers such as the Mahaweli. A classic example is the Minipe left canal where they tapped only the surface water of Mahaweli. Even the bigger tanks such as Nuwara Wewa and Parakrama Samudraya were fed with minor rivulets. There were also other ingenious features in the cascade irrigation systems built by the ancient kings, such as mud sluice canals and forest reservations between the reservoirs in the cascade system. These reservations helped trap silt and remove excess nutrients, which could otherwise contribute to increasing salinity as water flowed from one reservoir to another.

Victoria

Moragahakanda

A classic engineering marvel is the former Yoda Ela, which carries water from Kalawewa to Nuwara Wewa and Tissa Wewa. It is 87 km long although the straight distance between these points is only about 40 km. The gradient of this canal is about 10 cm per km or 6 inches per mile. Yodha Ela functions as a moving reservoir and feeds about 4,600 hectares of paddy lands. It is a winding canal with about 120 smaller reservoirs on its way. It was constructed during the reign of King Dhatusena around 459 AD and later expanded by King Parakramabahu by connecting more reservoirs to the network. Unfortunately, during the Mahaweli project our modern-day engineers constructed a concrete canal replacing the winding path of this Yoda Ela also called Jaya Ganga. This effectively removed the ability of the old Yoda Ela to remove silt and nutrients. The bank of this Ela has wet zone trees such as jak and areca nut growing well. They take up the nutrients from the flowing stream making the water suitable for irrigation later.

Ancient Mesopotamian civilisations depended on dams constructed along the two main rivers, Euphrates and Tigris. After continuous irrigation of their fields over several thousand years, salinity of the irrigated lands increased making them unsuitable for agriculture. People died due to famine and this clearly illustrates the danger of blocking main rivers for agriculture. There is scientific evidence that the salinity of paddy soils in the Mahaweli C area is increasing.

We saw the devastation caused by Cyclone Ditwah. The sluice gates of the Kotmale Reservoir were opened, and Kandy and Peradeniya were flooded. If the reservoir had had greater storage capacity, couldn’t the opening of the gates have been delayed? This may not be an argument that modern-day engineers would readily accept, and I am not an irrigation expert. These ideas may well be naïve. But most of us tend to think of reservoirs mainly in terms of hydropower generation and irrigation, while their role in flood control receives much less attention. The question therefore deserves serious consideration. Could restoring lost reservoir capacity through desilting help improve our ability to manage extreme rainfall and reduce flood risks?

Desilting our reservoirs should be considered a national priority.

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Losing out to Ethiopia

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From Trailblazer to Tailender

Export diversification – Missing the wood for the trees – Part III

by Gomi Senadhira

In Sri Lanka, the word “Ethiopia” is often used as disparaging slang to describe individuals or areas experiencing extreme poverty, starvation, or severe economic hardship. This linguistic habit originated in the 1980s with the Western media coverage of the devastating Ethiopian famine of 1983-85. That media coverage shocked the world but also left an outdated and offensive global stereotype that the country is permanently starving. Much has changed since then. By now, with an annual growth rate of around 9%, it is the fastest-growing economy in sub-Saharan Africa. Ethiopia has also emerged as a highly competitive exporter and is challenging not only its competitors in the region but also countries like Sri Lanka. This article is on how Sri Lanka has lost ground to Ethiopia (and a few other countries) in the GCC markets for agricultural and floricultural products.

Sri Lanka – A Pioneer in the Agriculture and Floricultural Market in the GCC

As discussed in Part II of this article, by the mid-1980s Sri Lanka had established a strong foothold in the GCC’s fruit, vegetable, and floricultural market. Geographical proximity and well-established shipping and air links gave Sri Lanka a strong comparative advantage over Southeast Asian and African nations. Thailand, Vietnam, and Kenya were not even in the market. At that time, Ethiopia was experiencing (as BBC news reports described) “a biblical famine”.

The market was not very large, but it was lucrative and growing. Trade Minister Lalith Athulathmudali as well as the Chairman of the Export Development Board, Victor Santiapillai, who visited Kuwait (and the GCC countries), recognised the market potential for these products and encouraged us to continue with our work. The minister was particularly keen to further develop links between the market for these products, exporters, and his Export Production Villages (EPVs). So, it was becoming a successful case not only for export diversification but also for transferring gains from exports directly to rural households.

From Trailblazer to Tailender

As a result, even by the beginning of this century Sri Lanka had a larger market share than most of its competitors from Asia or Africa. But since then, our competitiveness has weakened significantly. The tables below provide a comparative snapshot of Sri Lanka’s performance vis-à-vis Thailand, Vietnam, Kenya and Ethiopia in the GCC market for vegetables, fruits and floricultural products. As illustrated therein, in 2001 Sri Lanka was ahead of Thailand, Kenya and Ethiopia in this small but rapidly growing market. Since then, we have fallen behind Thailand, Kenya and many other countries in that lucrative market. If this trend continues, Sri Lanka will fall behind Ethiopia within the next few years. (See Table 1)

In the GCC market for vegetables (covered in HS chapter 07), Sri Lanka was ahead of most other competitors in 2001. As illustrated in Table 1 , Sri Lanka had failed to develop this market, while Thailand, Kenya, and even Ethiopia had very efficiently increased their market shares. The GCC is a market to which Sri Lanka can supply some vegetables, like cabbages, by sea. It appears Sri Lanka had also failed to exploit this mode of supply.

We can see a similar trend in the market for fruits. Vietnam, Kenya, and Thailand have emerged as major players, while exports from Sri Lanka have staggered on slowly. In this segment, Vietnam has emerged as a leading player during the last twenty years and the GCC imports from Viet Nam have shot up from US$44 thousand in 2001 to US$346 million by 2024. In part one of these articles, I discussed the remarkable increase of jackfruit exports from Vietnam “…just $3 million in 2015 to an impressive $236.8 million in 2023” while most of our jackfruit production rots under the trees. This explains how countries develop their markets, geographically and product-wise. (See Table 2)

Sri Lanka’s performance has been weakest in the market for floricultural products (HS Chapter 06), which groups live trees, cut flowers, and ornamental foliage. When we first entered the market in the 1980s, the market was dominated by the Netherlands, and Kenya and Ethiopia were not even in the market. At that time, we identified the Gulf states as a market where Sri Lanka could have a dominant presence due to geographical proximity. Even in 2001, Sri Lanka was ahead of Kenya, Ethiopia, and Thailand. But by now, Kenya has emerged as the dominant supplier. Ethiopia is also expanding its market share and is the third-largest exporter. (See Table 3)

Missing the Wood for the Trees

In the mid-1980s, Sri Lanka first established its foothold in the GCC market. Since then, Thailand, Vietnam, Kenya, and even Ethiopia have moved well ahead of us and have become leading players. Why did we lag behind in our export diversification efforts in general and, more particularly, in the GCC market?

The reasons are very clear. After the initial attempts in the 1980s and early 1990s, Sri Lanka has not been proactively involved in identifying, developing, and promoting new products and markets, or protecting and further developing new markets already established. The focus has simply been on traditional exports: tea, coconut, cinnamon, and garments, while other products were almost ignored. In essence, we have been and continue to focus intensely on a narrow group of products and markets, and we have lost sight of the bigger picture.

(The writer can be reached at senadhiragomi@gmail.com)

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