Browsing Zoology by Issue Date

Now showing items 1-20 of 106

Changes in the composition of host haemolymph after attack by an insect parasitoid

Fisher, R.C; Ganesalingam, V.K (Nature Publishing Group, 1970)

MANY insect parasitoids are capable of distinguishing whether their prospective hosts are healthy or whether the hosts already contain a parasitoid larva of the same or a different species. In many cases discrimination is ...
Survey of peridomestic mosquito species of Jaffna peninsula in Sri Lanka

Rajendram, G.F; Antony, N.R (1991-12)

Surveys of mosquitos in Sri Lanka have generally been confined to the South. A recent study in Jaffna peninsula in northern Sri Lanka reported on the biology of peridomestic mosquito species. The present survey indicates ...
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 ...
Anopheles culicifacies Y-chromosome dimorphism indicates sibling species (b and e) with different malaria vector potential in Sri Lanka

Surendran, S.N.; Abhayawardana, T.A; De Silva, B.G.D.N.K; Ramasamy, R; Ramasamy, M.S (2000)

In Sri Lanka, malaria is transmitted mainly by Anopheles culicifacies Giles sensu lato (Diptera: Culicidae). In India, this nominal taxon comprises sibling species A, B, C, D and E, distinguished by their chromosome ...
Length-weight relationship and relative condition of a silver biddy Gerres oblongus (Pisces: Perciformes) from the Jaffna lagoon, Sri Lanka

Sivashanthinil, K; Abeyrami, B (2003)

Cultivation of Gerres oblongus is likely to be profitable because of the consumer demand. The values obtained for the mean weight by sex show that females were significantly (P<0.05) larger than males. Covariance analysis ...
Population dynamics of silver biddy Gerres setifer (Pisces: Perciformes) in the Parangipettai waters, southeast coast of India

Sivashanthini, K; Khan, S.A (2004)

Growth parameters of Gerres setifer (Hamilton, 1822) in the Parangipettai waters were estimated using ELEFAN I programme. The asymptotic length (L∞) and growth coefficient (K) were found to be respectively 174.05 mm and ...
Molecular and biochemical characterization of a sand fly population from Sri Lanka: Evidence for insecticide resistance due to altered esterases and insensitive acetylcholinesterase

Surendran, S.N.; Karunaratne, S.H.P.P; Adams, Z; Hemingway, J; Hawkes, N.J (CAB International, 2005)

With an increasing incidence of cutaneous leishmaniasis in Sri Lanka, particularly in northern provinces, insecticide-mediated vector control is under consideration. Optimizing such a strategy requires the characterization ...
First report on the presence of morphospecies A and B of Phlebotomus argentipes sensu lato (Diptera: Psychodidae) in Sri Lanka – implications for leishmaniasis transmission

Surendran, S.N.; Kajatheepan, A.; Hawkes, N.J.; Ramasamy, R. (J Vect Borne Dis 42, 2005)

Phlebotomus argentipes Annandale and Brunetti (Diptera : Psychodidae) is the major Indian vector of visceral leishmaniasis (VL), caused by Leishmania donovani. However, whilst the geographic range of P. argentipes ...
Some characteristics of the larval breeding sites of Anopheles culicifacies species B and E in Sri Lanka

Surendran, S.N.; Ramasamy, R (Journal of Vector Borne Diseases, 2005-06)

Background & objectives: Anopheles culicifacies Giles, the major malaria vector in Sri Lanka, exists as a species complex comprising two sympatric sibling species-species B and E. Species E is reported to be the major ...
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)
Molecular studies of Anopheles culicifacies (Diptera: Culicidae) in Sri Lanka: Sibling species B and E show sequence identity at multiple loci

Surendran, S.N.; Hawkes, N.J; Steven, A; Hemingway, J; Ramasamy, R (2006)

The anomaly that Anopheles culicifacies (Diptera: Culicidae) species B is a major vector of malaria in Sri Lanka, but a non-vector in India, has been noted for several years. In 1999, a Y chromosome dimorphism associated ...
Anopheles culicifacies sibling species B and E in Sri Lanka differ in longevity and in their susceptibility to malaria parasite infection and common insecticides

Surendran, S.N.; Ramasamy, M.S; De Silva, B.G.D.N.K; Ramasamy, R (The Royal Entomological Society, 2006)

Members of the Anopheles culicifacies Giles complex (Diptera: Culicidae) are well established as the predominant vectors of malaria in Sri Lanka. Until recently, only sibling species B was reported to be present in Sri ...
Modulatory effects of dextran sulfate and fucoidan on binding and channel properties of AMPA receptors isolated from rat brain

Suppiramaniam, V; Vaithianathan, T; Manivannan, K; Dhanasekaran, M; Parameshwaran, K; Bahr, B.A (Wiley-Liss, Inc, 2006-11)

Previous work showed that the glycosaminoglycan (GAG) dextran sulfate (500 kDa) altered the binding and channel properties of α-amino-3-hydroxy-5- methyl-4-isoxazolepropionic acid (AMPA)-type glutamate receptors. The current ...
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), ...
Socio-environmental factors and sandfly prevalence in Delft Island, Sri Lanka: implications for leishmaniasis vector control

Surendran, S.N.; Kajatheepan, A.; Ramasamy, R. (J VECT BORNE, 2007)

Sri Lanka was free of any form of leishmaniasis until recently. The first autochthonous case of cutaneous leishmaniasis (CL) was only detected in 19921. By the year 2002, 65 cases, mainly from northern dry zone, were ...
Seasonality and insecticide susceptibility of Dengue vectors: an ovitrap based survey in a Residential area of northern sri lanka

Surendran, S.N.; Kajatheepan, A.; Sanjeefkumar, K.F.A.; Jude, P.J. (OVITRAP SURVEY OF DENGUE VECTORS IN JAFFNA, 2007)

With the backdrop of a high incidence of dengue in Jaffna District, Sri Lanka, an ovitrap based survey was carried out from May 2005 to April 2006 in a residential area to study the seasonality and insecticide susceptibility ...
Seasonality and insecticide susceptibility of dengue vectors: An ovitrap based survey in a residential area of northern Sri Lanka

Surendran, S.N.; Kajatheepan, A; Karunakaran, F.A; Sanjeefkumar; Jude, P.J (Southeast Asian Journal of Tropical Medicine and Public Health, 2007-03)

With the backdrop of a high incidence of dengue in Jaffna District, Sri Lanka, an ovitrap based survey was carried out from May 2005 to April 2006 in a residential area to study the seasonality and Insecticide susceptibility ...
Perception and personal protective measures toward mosquito bites by communities in Jaffna District, northern Sri Lanka

Surendran, S.N.; Kajatheepan, A (The American Mosquito Control Association, Inc, 2007-06)

Mosquito-borne diseases are of public health importance in war-torn northern Sri Lanka. The severity of mosquito bites and attitudes of the public toward mosquito problems were investigated using a structured questionnaire ...
Effect of leptin on prolactin and insulin-like growth factor-I secretion by cultured rat endometrial stromal cells

Tennekoon, K.H; Eswaramohan, T; Karunanayake, E.H (American Society for Reproductive Medicine, 2007-07)

Objective: To study the possible effect of leptin on PRL and insulin-like growth factor (IGF)-I secretion from rat endometrial stromal cells. Design: The effect of recombinant murine leptin on the secretion of PRL and IGF-I ...
Some aspects on the feeding of Gerres oblongus (Cuvier, 1830) dwelling from the Jaffna lagoon

Abyerami, B; Sivashanthini, K (Asian Network for Scientific Information, 2008)

A total of 179 fishes of Gerres oblongus (Cuvier, 1830) ranging in standard length 40 to 169 mm were collected in the morning from four collection sites in tire Jaffna lagoon. The stomach contents were assessed qualitatively ...

Now showing items 1-20 of 106

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