Zoology: Recent submissions

Now showing items 61-80 of 106

Survey and identification of insect pests of oyster mushroom (Pleurotus ostreatus) cultures in central province of Sri Lanka

Gnaneswaran, R.; Wijayagunasekara, H.N.P. (Tropical Agricultural Research and Extension., 1999)

Mushroom cultivation in Sri Lanka was established as a profitable small industry only after 1986. The continuous growing of mushrooms on a large scale in localized areas had led to various pest infestations. The present ...
A Key for Identification of Deltocephaline Genera (Hemiptera: Cicadellidae: Deltocephalinae) Associated with Vegetable Ecosystem in Sri Lanka.

Gnaneswaran, R.; Hemachandra, K.S.; Wijayagunasekara, H.N.P.; Ahangama, D. (Tropical Agricultural Research, 2010)

ABSTRACT. Members of the subfamily Deltocephalinae include many vector species transmitting pathogens among economically important crops. Species of ten genera belonging to seven tribes namely, Exitianus Ball, Nephotettix ...
Diversity of leafhoppers (hemiptera: auchenorhyncha: cicadellidae) associated with paddy and vegetable ecosystems in mid country of sri lanka

Gnaneswaran, R.; Hemachandra, K.S.; Ahangama, D.; Wijayagunasekara, H.N.P.; Wahundeniya, I. (Sri Lankan J. Agric. Sci., 2006)
Idioscopus nagpurensis (Pruthi) (Hemiptera: Cicadellidae: Idiocerinae): A New Member of Mango Leafhopper Complex in Sri Lanka.

Gnaneswaran, R.; Hemachandra, K.S.; Viraktamath, C.A.; Ahangama, D.; Wijayagunasekara, H.N.P.; Wahundeniya, I. (Tropical Agricultural Research, 2007)

ABSTRACT. Idioscopus nagpurensis (Pruthi), reported as the first record in Sri Lanka, is described with respect to external and internal anatomy along with other Idiocerine leafhoppers, Idioscopus clypealis (Lethierry), ...
Three new species of Goniagnathus (Hemiptera: Cicadellidae) from the Indian subcontinent with description of a new subgenus

Viraktamath, C.A.; Gnaneswaran, R. (Zootaxa, 2009)

Tropicognathus subgen. nov. of Goniagnathus is described with Goniagnathus fumosus Distant as the type species. Three new species, Goniagnathus (Tropicognathus) anufrievi sp. nov. (India: Karnataka), Goniagnathus ...
Review of the grass feeding leafhopper genus Gurawa Distant (Hemiptera: Cicadellidae: Deltocephalinae) from the Indian subcontinent with description of two new species

Gnaneswaran, R.; Viraktamath, C.A. (Association for Advancement of Entomology, 2013)

ABSTRACT: Three species of Gurawa, G. intermediata Pruthi, G. minorcephala Pruthi and G. vexillum Distant are redescribed and illustrated. Two new species of Gurawa with constricted head in front of eyes, G. ceylonica sp. ...
Review of the genus Blosyrus Schoenherr (Coleoptera: Curculionidae: Entiminae) from India and adjacent countries

Mahendiran, G.; Gnaneswaran, R.; Ramamurthy, V.V. (Oriental Insects, 2017)

Nine species of the genus Blosyrus (Schoenherr, 1826) (Curculionidae: Entiminae) occurring in India, Sri Lanka and Myanmar are revised. The earlier known seven species are redescribed, while two new species B. marshalli ...
Aedes larval bionomics and implications for dengue control in the paradigmatic Jafna peninsula, northern Sri Lanka

Surendran, S.N.; Jayadas, T.T.P.; Thiruchenthooran, V.; Raveendran, S.; Tharsan, A.; Sharanga, S.; Kokila, S.; Suthakar, K.; Bharathy, Ponnaiah; Laksiri, G.; Malavige, G.N.; Ranjan, R. (Aedes larval bionomics and implications for dengue control in the paradigmatic Jafna peninsula, northern Sri Lanka, 2021)

Abstract Background: The larval bionomics of Aedes across the Jafna peninsula in northern Sri Lanka was investigated to obtain information needed for developing more efective larval source reduction measures to control ...
Transcriptomic, proteomic and ultrastructural studies on salinity-tolerant Aedes aegypti in the context of rising sea levels and arboviral disease epidemiology

Ranjan, R.; Thiruchenthooran, V.; Jayadas, T.T.P.; Eswaramohan, T.; Sharanga, S.; Kokila, S.; Naguleswaran, A.; Cayrol, M.U.B.; Voisin, S.N.; Bulet, P.; Surendran, S.N. (BMC Genomics, 2021)

Background: Aedes aegypti mosquito, the principal global vector of arboviral diseases, lays eggs and undergoes larval and pupal development to become adult mosquitoes in fresh water (FW). It has recently been observed ...
Anthropogenic Factors Driving Recent Range Expansion of the Malaria Vector Anopheles stephensi

Surendran, S.N.; Kokila, S.; Arthiyan, S.; Jayadas, T.P.P.; Karvannan, K.; Sharanga, S.; Gajapathy, K.; Meena, S.; Parakrma Karunaratne, S.H.P.; Ranjan, R. (Frontiers in Public Health, 2019)

The malaria vector Anopheles stephensi is found in wide tracts of Asia and the Middle East. The discovery of its presence for the first time in the island of Sri Lanka in 2017, poses a threat of malaria resurgence in a ...
Susceptibility to common insecticides and detoxifying enzyme activities in Anopheles sundaicus (sensu lato) after cessation of indoor residual spraying of insecticides in the Jaffna Peninsula and its surroundings in northern Sri Lanka

Kokila, S.; Weerarathne, T.C.; Thileepan, A.; Parakrama Karunaratne, S.H.P.; Ramasamy, R.; Surendran, S.N. (Parasites & Vectors, 2019)

Abstract Background: Sri Lanka has been malaria-free since 2013 but re-introduction of malaria transmission by infected overseas travelers is possible due to a prevalence of potent malaria vectors. Knowledge of the insecticide ...
Development of the major arboviral vector Aedes aegypti in urban drain-water and associated pyrethroid insecticide resistance is a potential global health challenge

Surendran, S.N.; Jayadas, T.T.P.; Kokila, S.; Sharanga, S.; Karvannan, K.; Weerarathne, T.C.; Parakrama Karunaratne, S.H.P.; Ramasamy, R. (Parasites & Vectors, 2019)

Background: Aedes aegypti were found developing in the water in open public drains (drain-water, DW) in Jafna city in northern Sri Lanka, a location where the arboviral diseases dengue and chikungunya are endemic. Methods: ...
The clinical profle, hematological parameters and liver transaminases of dengue NS1 Ag positive patients admitted to Jafna Teaching Hospital, Sri Lanka

Jayadas, T. T. P.; Kumanan, T.; Arasaratnam, V.; Gajapathy, K.; Surendran, S.N. (BMC Research notes, 2019)

Objective: Objective of the study is to evaluate the on-admission day symptoms and signs, clinical, hematological parameters and liver transaminases of the dengue NS1 positive patients who got admitted on diferent clinical ...
Anopheline bionomics, insecticide resistance and transnational dispersion in the context of controlling a possible recurrence of malaria transmission in Jaffna city in northern Sri Lanka

Surendran, S.N.; Jayadas, T.T.P.; Tharsan, A.; Thiruchenthooran, V.; Santhirasegaram, S.; Sivabalakrishnan, K.; Raveendran, S.; Ramasamy, R. (Parasites and Vectors, 2020)

Background: Malaria was eliminated from Sri Lanka in 2013. However, the infux of infected travelers and the pres ence of potent anopheline vectors can re-initiate transmission in Jafna city, which is separated by a narrow ...
Comparative characterization of two cxcl8 homologs in oplegnathus fasciatus: Genomic, transcriptional and functional analyses

Thulasitha, W.S.; Umasuthan, N.; Bathige, S.D.N.K.; Oh, M.; Lee, J. (Biomolecules, 2020)

CXCL8 (interleukin-8, IL-8) is a CXC family chemokine that recruits specific target cells and mediates inflammation and wound healing. This study reports the identification and characterization of two cxcl8 homologs from ...
Zooplankton diversity in selected coastal waters of area in mandaithivu, island jaffna, sri lanka.

Jananan, T.; Sivakumar, P. (Proceedings of Jaffna Science, Association Vol 26 -No 01, 2019)

Zooplanktons are floating and drifting with limited power of locomotion. They occupy an intermediate position between autotrophs and carnivores in the food web. The presence and dominance of zooplankton species plays an ...
Report On Massive Fish Deaths In Thondamanaru Lagoon, Jaffna, Sri Lanka

Sivakumar, P. (Proceedings of the 7th International symposium on Water Quality and Human Health: challenges Ahead Postgraduate Institute of Science, 2019-12)

Thondamanaru Lagoon is one of the most productive lagoons in the Northern Province of Sri Lanka. It supports profitable shellfish and finfish fisheries. There are three existing structures namely barrage with sluice gate, ...
Current Status of Marine Snakes from Jaffna Peninsula, Sri Lanka with Description of Hitherto Unrecorded Hydrophis fasciatus fasciatus (Schneider, 1799) [2008]

Abyerami, K.; Sivashanthini, K. (2008)

As only a few study reported on sea snakes of Sri Lanka, a study was undertaken from June 2003 to November 2004 in the coast of Jaffna Peninsula which lies in the Northern part of Sri Lanka. Out of the 121 specimens examined, ...
Seasonal Distribution and Bionomics of Sandflies (Diptera: Psychodidae: Phlebotominae), Vectors for Leishmaniasis, in Jaffna, Sri Lanka

Gajapathy, K; Jude, P.J; Surendran, S.N. (JUICE- 2012 University of Jaffna, 2012-07-20)

Leishmaniasis is a major public health concern in Sri Lanka. More than 2000 cases of cutaneous leishmaniasis (CL) have been reported from the island since 2000. The most fatal visceral leishmaniasis (VL) is also emerging ...
Preliminary Assessment of the Status of Commercially Prepared Salted and Sun Dried Fish Scomberoides Commersonianus (Lacepede, 1802)

Vivekshan Reval, S; Sivashanthini, K; Thavaranjit, A.C (JUICE- 2012 University of Jaffna, 2012-07-20)

The present research work was carried out to evaluate the status of commercially prepared salted and sun dried fish, Scomberoides commersonianus from the most popular dried fish preparation site Velanai in Jaffna district ...

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