BioMed Central | Members | University of Jaffna

1.

Molecular characterization and identification of members of the Anopheles subpictus complex in Sri Lanka

Sinnathamby N Surendran, Devojit K Sarma, Pavilupillai J Jude, Petri Kemppainen, Nadarajah Kanthakumaran, Kanapathy Gajapathy, Lalanthika BS Peiris, Ranjan Ramasamy, Catherine Walton Malaria Journal 2013, 12:304 (30 August 2013)

Abstract | Full text | PDF | PubMed | Editor’s summary

This study looks at the malaria vectors species within the Subpictus group in Sri Lanka. Four morphological sibling species have been reported in Sri Lanka, but molecular studies described here suggest at a phylogenetic level the presence on only two species A & B.

2.

Rebuilding community resilience in a post-war context: developing insight and recommendations - a qualitative study in Northern Sri Lanka

Daya Somasundaram, Sambasivamoorthy Sivayokan International Journal of Mental Health Systems 2013, 7:3 (11 January 2013)

Abstract | Full text | PDF | PubMed

3.

Salinity-tolerant larvae of mosquito vectors in the tropical coast of Jaffna, Sri Lanka and the effect of salinity on the toxicity of Bacillus thuringiensis to Aedes aegypti larvae

Pavilupillai J Jude, Tharmatha Tharmasegaram, Gobika Sivasubramaniyam, Meena Senthilnanthanan, Selvam Kannathasan, Selvarajah Raveendran, Ranjan Ramasamy, Sinnathamby N Surendran Parasites & Vectors 2012, 5:269 (22 November 2012)

Abstract | Full text | PDF | PubMed | Editor’s summary

Several mosquito species were found in brackish water sites in Jaffna Peninsula. Salinity was found to have a small but significant effect on the toxicity of Bacillus thuringiensis to Ae. aegypti larvae. Image: Brackish water coastal marsh in Sarasalai where mosquito larvae, including Aedes albopictus were collected in the black battery box shown.

4.

Variations in susceptibility to common insecticides and resistance mechanisms among morphologically identified sibling species of the malaria vector Anopheles subpictus in Sri Lanka

Sinnathamby N Surendran, Pavilupillai J Jude, Thilini C Weerarathne, SHP Parakrama Karunaratne, Ranjan Ramasamy Parasites & Vectors 2012, 5:34 (10 February 2012)

Blood feeding Anopheles subpictus is common in the coastal areas of northern and eastern Sri Lanka.¿ An. subpictus is composed of four sibling species A - D that have been differentiated on cytological and morphological criteria and show differences in salinity tolerance and susceptibility to insecticides.¿ The numbers of ridges are one of the features used for identifying An. subpictus sibling species. Image: Adult An. subpictus species B feeding on human. The insert shows an An. subpictus egg with ridges.

5.

Molecular evidence for the presence of malaria vector species a of the Anopheles annularis complex in Sri Lanka

Sinnathamby N Surendran, Kanapathy Gajapathy, Vaitheki Kumaran, Tharmasegaram Tharmatha, Pavilupillai J Jude, Ranjan Ramasamy Parasites & Vectors 2011, 4:239 (22 December 2011)

Abstract | Full text | PDF | PubMed | Editor’s summary

Anopheles annularis larvae were found and characterised by DNA sequencing as belonging to the vector species A. An. annularis is a major vector in the vicinity of irrigation canals and tanks such as Chinnakulam in the dry zone of Sri Lanka. Image: Chinnakulam tank in Jaffna where Anopheles annularis larvae were found.

6.

Variations in salinity tolerance of malaria vectors of the Anopheles subpictus complex in Sri Lanka and the implications for malaria transmission

Sinnathamby N Surendran, Pavillupillai J Jude, Ranjan Ramasamy Parasites & Vectors 2011, 4:117 (24 June 2011)

Predominantly inland Anopheles subpictus species A, C and D breed in up to 4 ppt salinity, while the more coastal An. subpictus B/An. sundaicus tolerates up to 30 ppt salinity in Sri Lanka. Image: Collection of An. subpictus B/An. sundaicus larvae in Kallady lagoon, Sri Lanka at a salinity of 30 parts per thousand.

7.

Possible impact of rising sea levels on vector-borne infectious diseases

Ranjan Ramasamy, Sinnathamby N Surendran BMC Infectious Diseases 2011, 11:18 (18 January 2011)

Abstract | Full text | PDF | PubMed | Cited on BioMed Central

8.

Genetic evidence for malaria vectors of the Anopheles sundaicus complex in Sri Lanka with morphological characteristics attributed to Anopheles subpictus species B

Sinnathamby N Surendran, Om P Singh, Pavillupillai J Jude, Ranjan Ramasamy Malaria Journal 2010, 9:343 (29 November 2010)

First attempt at using molecular tools to investigate members of the An. subpictus complex. Although it is preliminary, it highlights the inability of current morphological markers to separate the four known species, the possible inclusion of members of the An. sundaicus complex and indicates a need for further investigation into these two species complexes.

9.

Collective trauma in the Vanni- a qualitative inquiry into the mental health of the internally displaced due to the civil war in Sri Lanka

Daya Somasundaram International Journal of Mental Health Systems 2010, 4:22 (28 July 2010)

A qualitative inquiry into the psychosocial consequences for the Vanni internally displaced persons (IDPs) caught in the final war between state forces and the Liberation Tigers of Tamil Eelam (LTTE) in northern Sri Lanka in 2009.

10.

Anopheles culicifacies breeding in brackish waters in Sri Lanka and implications for malaria control

Pavilupillai J Jude, Sangaralingam Dharshini, Muthuladchumy Vinobaba, Sinnathamby N Surendran, Ranjan Ramasamy Malaria Journal 2010, 9:106 (21 April 2010)

In a study of malaria vectors in areas affected by the 2004 tsunami, the authors demonstrate the ability of Anopheles culicifacies species E, the major vector of falciparum and vivax malaria in Sri Lanka, to oviposit and breed in brackish water. Since climatic changes are likely to further increase inland brackish water bodies, the findings have significant implications for the control of malaria

11.

Collective trauma in northern Sri Lanka: a qualitative psychosocial-ecological study

Daya Somasundaram International Journal of Mental Health Systems 2007, 1:5 (4 October 2007)

Abstract | Full text | PDF | PubMed | Editor’s summary

The civil war in Sri Lanka is a more prominent cause of mental health problems than the 2004 tsunami. Interventions should consider the “collective trauma” of war within the communities.

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	1.	Research *Molecular characterization and identification of members of the Anopheles subpictus* complex in Sri Lanka** Sinnathamby N Surendran, Devojit K Sarma, Pavilupillai J Jude, Petri Kemppainen, Nadarajah Kanthakumaran, Kanapathy Gajapathy, Lalanthika BS Peiris, Ranjan Ramasamy, Catherine Walton Malaria Journal 2013, 12:304 (30 August 2013) Abstract \| Full text \| PDF \| PubMed \| Editor’s summary This study looks at the malaria vectors species within the Subpictus group in Sri Lanka. Four morphological sibling species have been reported in Sri Lanka, but molecular studies described here suggest at a phylogenetic level the presence on only two species A & B.
	2.	Research Rebuilding community resilience in a post-war context: developing insight and recommendations - a qualitative study in Northern Sri Lanka Daya Somasundaram, Sambasivamoorthy Sivayokan International Journal of Mental Health Systems 2013, 7:3 (11 January 2013) Abstract \| Full text \| PDF \| PubMed
	3.	Research *Salinity-tolerant larvae of mosquito vectors in the tropical coast of Jaffna, Sri Lanka and the effect of salinity on the toxicity of Bacillus thuringiensis* to Aedes aegypti larvae** Pavilupillai J Jude, Tharmatha Tharmasegaram, Gobika Sivasubramaniyam, Meena Senthilnanthanan, Selvam Kannathasan, Selvarajah Raveendran, Ranjan Ramasamy, Sinnathamby N Surendran Parasites & Vectors 2012, 5:269 (22 November 2012) Abstract \| Full text \| PDF \| PubMed \| Editor’s summary Several mosquito species were found in brackish water sites in Jaffna Peninsula. Salinity was found to have a small but significant effect on the toxicity of Bacillus thuringiensis to Ae. aegypti larvae. Image: Brackish water coastal marsh in Sarasalai where mosquito larvae, including Aedes albopictus were collected in the black battery box shown.
	4.	Research *Variations in susceptibility to common insecticides and resistance mechanisms among morphologically identified sibling species of the malaria vector Anopheles subpictus* in Sri Lanka** Sinnathamby N Surendran, Pavilupillai J Jude, Thilini C Weerarathne, SHP Parakrama Karunaratne, Ranjan Ramasamy Parasites & Vectors 2012, 5:34 (10 February 2012) Abstract \| Full text \| PDF \| PubMed \| Cited on BioMed Central \| Editor’s summary Blood feeding Anopheles subpictus is common in the coastal areas of northern and eastern Sri Lanka.¿ An. subpictus is composed of four sibling species A - D that have been differentiated on cytological and morphological criteria and show differences in salinity tolerance and susceptibility to insecticides.¿ The numbers of ridges are one of the features used for identifying An. subpictus sibling species. Image: Adult An. subpictus species B feeding on human. The insert shows an An. subpictus egg with ridges.
	5.	Short report *Molecular evidence for the presence of malaria vector species a of the Anopheles annularis* complex in Sri Lanka** Sinnathamby N Surendran, Kanapathy Gajapathy, Vaitheki Kumaran, Tharmasegaram Tharmatha, Pavilupillai J Jude, Ranjan Ramasamy Parasites & Vectors 2011, 4:239 (22 December 2011) Abstract \| Full text \| PDF \| PubMed \| Editor’s summary Anopheles annularis larvae were found and characterised by DNA sequencing as belonging to the vector species A. An. annularis is a major vector in the vicinity of irrigation canals and tanks such as Chinnakulam in the dry zone of Sri Lanka. Image: Chinnakulam tank in Jaffna where Anopheles annularis larvae were found.
	6.	Research *Variations in salinity tolerance of malaria vectors of the Anopheles subpictus* complex in Sri Lanka and the implications for malaria transmission** Sinnathamby N Surendran, Pavillupillai J Jude, Ranjan Ramasamy Parasites & Vectors 2011, 4:117 (24 June 2011) Abstract \| Full text \| PDF \| PubMed \| Cited on BioMed Central \| Editor’s summary Predominantly inland Anopheles subpictus species A, C and D breed in up to 4 ppt salinity, while the more coastal An. subpictus B/An. sundaicus tolerates up to 30 ppt salinity in Sri Lanka. Image: Collection of An. subpictus B/An. sundaicus larvae in Kallady lagoon, Sri Lanka at a salinity of 30 parts per thousand.
	7.	Hypothesis Possible impact of rising sea levels on vector-borne infectious diseases Ranjan Ramasamy, Sinnathamby N Surendran BMC Infectious Diseases 2011, 11:18 (18 January 2011) Abstract \| Full text \| PDF \| PubMed \| Cited on BioMed Central
	8.	Research *Genetic evidence for malaria vectors of the Anopheles sundaicus* complex in Sri Lanka with morphological characteristics attributed to Anopheles subpictus species B** Sinnathamby N Surendran, Om P Singh, Pavillupillai J Jude, Ranjan Ramasamy Malaria Journal 2010, 9:343 (29 November 2010) Abstract \| Full text \| PDF \| PubMed \| Cited on BioMed Central \| Editor’s summary First attempt at using molecular tools to investigate members of the An. subpictus complex. Although it is preliminary, it highlights the inability of current morphological markers to separate the four known species, the possible inclusion of members of the An. sundaicus complex and indicates a need for further investigation into these two species complexes.
	9.	Research Collective trauma in the Vanni- a qualitative inquiry into the mental health of the internally displaced due to the civil war in Sri Lanka Daya Somasundaram International Journal of Mental Health Systems 2010, 4:22 (28 July 2010) Abstract \| Full text \| PDF \| PubMed \| Cited on BioMed Central \| Editor’s summary A qualitative inquiry into the psychosocial consequences for the Vanni internally displaced persons (IDPs) caught in the final war between state forces and the Liberation Tigers of Tamil Eelam (LTTE) in northern Sri Lanka in 2009.
	10.	Research Anopheles culicifacies breeding in brackish waters in Sri Lanka and implications for malaria control Pavilupillai J Jude, Sangaralingam Dharshini, Muthuladchumy Vinobaba, Sinnathamby N Surendran, Ranjan Ramasamy Malaria Journal 2010, 9:106 (21 April 2010) Abstract \| Full text \| PDF \| PubMed \| Cited on BioMed Central \| Editor’s summary In a study of malaria vectors in areas affected by the 2004 tsunami, the authors demonstrate the ability of Anopheles culicifacies species E, the major vector of falciparum and vivax malaria in Sri Lanka, to oviposit and breed in brackish water. Since climatic changes are likely to further increase inland brackish water bodies, the findings have significant implications for the control of malaria
	11.	Research Collective trauma in northern Sri Lanka: a qualitative psychosocial-ecological study Daya Somasundaram International Journal of Mental Health Systems 2007, 1:5 (4 October 2007) Abstract \| Full text \| PDF \| PubMed \| Editor’s summary The civil war in Sri Lanka is a more prominent cause of mental health problems than the 2004 tsunami. Interventions should consider the “collective trauma” of war within the communities.