Genetic variability within and between the troops of toque macaque,Macaca sinica, in Sri Lanka

Primates ◽  
1991 ◽  
Vol 32 (3) ◽  
pp. 283-299 ◽  
Author(s):  
Takayoshi Shotake ◽  
Ken Nozawa ◽  
Charles Santiapilai
Keyword(s):  
Sri Lanka ◽  
Genetic Variability ◽  
Macaca Sinica ◽  
Toque Macaque

Gastro-intestinal parasites in two subspecies of toque macaque (Macaca sinica) in Sri Lanka and their zoonotic potential

2021 ◽  
pp. 100558
Author(s):  
Sandani S. Thilakarathne ◽  
Rupika S. Rajakaruna ◽  
Deepani D. Fernando ◽  
R.P.V.J. Rajapakse ◽  
Piyumali K. Perera
Keyword(s):  
Sri Lanka ◽  
Intestinal Parasites ◽  
Zoonotic Potential ◽  
Macaca Sinica ◽  
Toque Macaque

Human-monkey (Macaca sinica) Conflict in Sri Lanka

2017 ◽  
Vol 63 (2) ◽  
pp. 35
Author(s):  
B. C. G. Mendis ◽  
Ashoka Dangolla
Keyword(s):  
Sri Lanka ◽  
Macaca Sinica

Application of mutation breeding techniques in the development of green crop varieties in Sri Lanka: the way forward.

2021 ◽  
pp. 76-82
Author(s):  
Malathy Parasuraman ◽  
Priyantha Weerasinghe
Keyword(s):  
Sri Lanka ◽  
Genetic Variability ◽  
Gamma Rays ◽  
Mutation Breeding ◽  
Iron Toxicity ◽  
Mutant Line ◽  
High Yield ◽  
Rice Mutant ◽  
The 1960S ◽  
The Way

Abstract The Department of Agriculture (DOA) in Sri Lanka initiated mutation breeding in the 1960s with the introduction of a cobalt-60 source. The first rice mutant variety, MI 273, was released for general cultivation in 1971. M1 273, derived from irradiation of the H-4 variety, was identified as a drought-tolerant variety. An indirect rice mutant variety, developed by crossing the short mutant line BW267-3 with a highly adaptable variety, was released as BW 372 in 2013. It is moderately tolerant to blast, bacterial leaf blight, brown plant hopper, gall midge and iron toxicity, and thus increases productivity to 3-4 t/ha on lands prone to iron toxicity. The most popular groundnut variety cultivated in the country, 'Tissa', is a mutant developed by irradiation with gamma-rays at 200 Gy. It showed attributes of high yield, medium maturity (90-100 days) and high oil content (42%). 'Tissa' presently covers 80% of the groundnut cultivated area in Sri Lanka. A sesame mutant line, derived from the variety MI-3 irradiated at 200 Gy with 60Co gamma-rays, was released as 'Malee' (ANK-S2) in 1993. It is a high-yielding variety (1.1-1.8 t/ha) resistant to Phytophthora blight. A cherry-type mutant tomato variety, developed by irradiation of seeds with gamma-rays (320 Gy), was released as 'Lanka Cherry' in 2010. Improved attributes are pear-shaped fruits and bacterial wilt resistance. Narrow genetic variability in many crops is a constraint to the development of new varieties adapted to the changing climate. Hence, the DOA is emphasizing integration of induced mutagenesis in conventional breeding programmes to develop resistant/tolerant varieties having high yield, quality and health-promoting functional properties in field and horticultural crops. The newly installed gamma irradiation chamber facilitates the creation of genetic variability in food crops, thus paving the way for the development of greener varieties.

Vitamin D status in wild toque macaques (Macaca sinica) in Sri Lanka

2017 ◽  
Vol 79 (6) ◽  
pp. e22655 ◽  
Author(s):  
Michael L. Power ◽  
Wolfgang P. J. Dittus
Keyword(s):  
Vitamin D ◽  
Sri Lanka ◽  
Vitamin D Status ◽  
Macaca Sinica

Hematology of a natural population of toque macaques (Macaca sinica) at polonnaruwa, Sri Lanka

2003 ◽  
Vol 61 (1) ◽  
pp. 13-28 ◽  
Author(s):  
Dilrukshi K. Ekanayake ◽  
Neil U. Horadagoda ◽  
G.K. Madura Sanjeevani ◽  
Appudurai Arulkanthan ◽  
K.A. Sunil Gunatilake ◽  
...  
Keyword(s):  
Sri Lanka ◽  
Natural Population ◽  
Macaca Sinica

Shields on Electric Posts Prevent Primate Deaths: A Case Study at Polonnaruwa, Sri Lanka

2020 ◽  
Vol 91 (6) ◽  
pp. 643-653
Author(s):  
Wolfgang P.J. Dittus
Keyword(s):  
Sri Lanka ◽  
Power Distribution ◽  
Primate Species ◽  
Wild Animals ◽  
Water Pipes ◽  
Electric Shocks ◽  
Macaca Sinica ◽  
Human Habitation ◽  
Electric Supply

When monkeys, such as the toque macaques (<i>Macaca sinica</i>) of Sri Lanka, seek food on the ground near human habitation, they may use electrical posts to escape aggression from conspecifics, dogs, or humans. Shields mounted on electrical posts prevented monkeys from reaching the electrical wires, thereby averting their electrocution: the frequency of electrocutions (<i>n</i> = 0) was significantly less (<i>p</i> &#x3c; 0.001) in the 12 years after installation of the shields than in the 12 years before (<i>n</i> = 18). Electric shocks were either fatal (<i>n</i> = 14) or caused permanent injury (<i>n</i> = 4) (collectively referred to as electrocutions hereafter). The shields may find broader applications in other primate species and environments wherever monkeys are attracted by human food near electrical posts. Primates and other arboreal mammals also accessed live wires from trees; at known electrocution hotspots, short spans of exposed wires were insulated by encapsulating them in PVC water pipes. It was impossible, however, to prevent electrocutions from all electric supply infrastructures that put monkeys at risk. A wider use of insulated electric conductors in planning power distribution in habitats frequented by wild animals would be desirable in preventing electric shocks to wildlife.

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