Search Results - "Dittus, WPJ"

Prevalence of cryptosporidium and other enteric parasites among wild non-human primates in Polonnaruwa, Sri Lanka by Ekanayake, Dilrukshi K, Arulkanthan, Appudurai, Horadagoda, Neil U, Sanjeevani, G K Madura, Kieft, Rudo, Gunatilake, Sunil, Dittus, Wolfgang P J

“…Cryptosporidiosis is a rapidly emerging disease in the tropics. This is the first report of Cryptosporidium and other protozoan infections (Entamoeba spp.,…”
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Transmission dynamics of Cryptosporidium infection in a natural population of non-human primates at Polonnaruwa, Sri Lanka by Ekanayake, Dilrukshi K, Welch, David Mark, Kieft, Rudo, Hajduk, Stephen, Dittus, Wolfgang P J

“…Infections from Cryptosporidium parvum are of interest not only to public health, but also to wildlife conservation, particularly when humans and livestock…”
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Seroprevalence of Toxoplasma Gondii in Wild Toque Macaques (Macaca Sinica) at Polonnaruwa, Sri Lanka by Ekanayake, D K, Rajapakse, RPVJ, Dubey, J P, Dittus, WPJ

“…From a natural population that inhabits the dry evergreen forest at Polonnaruwa, serum samples of 170 toque macaques were examined for antibodies to Toxoplasma…”
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Birth Sex Ratios in Toque Macaques and Other Mammals: Integrating the Effects of Maternal Condition and Competition by DITTUS, W. P. J

“…Mammalian life histories suggest that maternal body condition and social dominance (a measure of resource-holding potential) influence the physical and social…”
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Seroprevalence of Toxoplasma gondii in Wild Toque Macaques (Macaca sinica) at Polonnaruwa, Sri Lanka by Ekanayake, D. K, Rajapakse, R. P V. J, Dubey, J. P, Dittus, W. P J

“…From a natural population that inhabits the dry evergreen forest at Polonnaruwa, serum samples of 170 toque macaques were examined for antibodies to Toxoplasma…”
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Paternity assessment in wild groups of toque macaques Macaca sinica at Polonnaruwa, Sri Lanka using molecular markers by Keane, B., Dittus, W. P. J., Melnick, D. J.

“…Genetic variation at four microsatellite loci in conjunction with that at a highly variable allozyme locus was used to analyse paternity over a 12‐year period…”
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Serologic evidence for an epizootic dengue virus infecting toque macaques (Macaca sinica) at Polonnaruwa, Sri Lanka by de Silva, A M, Dittus, W P, Amerasinghe, P H, Amerasinghe, F P

“…Dengue is one of the most rapidly emerging diseases in the tropics. Humans are the principal reservoir of dengue viruses. It is unclear if nonhuman primates…”
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Hematology of a natural population of toque macaques (Macaca sinica) at polonnaruwa, Sri Lanka by Ekanayake, Dilrukshi K., Horadagoda, Neil U., Sanjeevani, G.K. Madura, Arulkanthan, Appudurai, Gunatilake, K.A. Sunil, Dittus, Wolfgang P.J.

“…Hematological studies were conducted in three wild groups of toque macaques (Macaca sinica) inhabiting the Polonnaruwa Sanctuary in northeastern Sri Lanka. The…”
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The local distribution of highly divergent mitochondrial DNA haplotypes in toque macaques Macaca sinica at Polonnaruwa, Sri Lanka by Hoelzer, G A, Dittus, W P, Ashley, M V, Melnick, D J

“…Surveys of mitochondrial DNA (mtDNA) variation in macaque monkeys have revealed extremely high levels of intraspecific divergence among haplotypes. One…”
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Serologic evidence for an epizootic dengue virus infecting toque macaques (Macaca sinica) at Polonnaruwa, Sri Lanka by De Silva, AM, Dittus, WPJ, Amerasinghe, PH, Amerasinghe, F P

“…Dengue is one of the most rapidly emerging diseases in the tropics. Humans are the principal reservoir of dengue viruses. It is unclear if nonhuman primates…”
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The influence of cyclones on the dry evergreen forest of Sri Lanka by Dittus, W.P.J

“…I assessed damage caused by a cyclone in November 1978 to a dry evergreen forest in Sri Lanka. Damage included defoliation, breakage of twigs, branches and…”
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Seroepidemiology of dengue and other arboviruses in a natural population of toque macaques (Macaca sinica) at Polonnaruwa, Sri Lanka by Peiris, J S, Dittus, W P, Ratnayake, C B

“…A seroepidemiological study of arboviruses infecting 115 wild toque macaques (Macaca sinica) at Polonnaruwa, Sri Lanka showed a high prevalence of antibodies…”
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The Evolution of Behaviors Regulating Density and Age-Specific Sex Ratios in a Primate Population by Dittus, Wolfgang P.J

“…AbstractAdult females within a macaque troop are related to one another and to all infants and juveniles. Thus, the evolution of social behaviors that impose…”
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Sex Differences in Fitness following a Group Take-Over among Toque Macaques: Testing Models of Social Evolution by DITTUS, W. P. J

“…A group of toque macaques took-over the home range of one of its subordinate neighboring groups and fused with it to form a larger cohesive group. In the 7…”
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The Social Regulation of Population Density and Age-Sex Distribution in the Toque Monkey by Dittus, Wolfgang P.J

“…The relationships between behavioral, ecologicaland demographic data are examined for a wild population of nearly 450 toque monkeys, Macaca sinica, of Sri…”
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Individual and social behavioral responses to injury in wild toque macaques (Macaca sinica) by DITTUS, W. P, RATNAYEKE, S. M

“…Toque macaques (Macaca sinica ), inhabiting natural forest at Polonnaruwa, Sri Lanka, are frequently injured in fights with conspecifics. The behavior of known…”
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Group Fusion Among Wild Toque Macaques: an Extreme Case of Inter-Group Resource Competition by Dittus, Wolfgang P.J

“…1. Two independent groups of toque macaques (Macaca sinica) fused into one larger cohesive group. The groups were part of a population of 18 to 22 groups that…”
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The Ecology of a Semi-Evergreen Forest Community in Sri Lanka by Dittus, Wolfgang P. J.

“…Semi-evergreen forests cover the dry zone plains of Sri Lanka and constitute four-fifths of the island's vegetation. In a sample area of 3 km2, in the…”
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Observation of a birth among wild toque macaques (Macaca sinica) by RATNAYEKE, A. P, DITTUS, W. P. J

“…Most toque macaques give birth to their infants during the night when resting arboreally. Here we report on a birth that occurred in daytime (at 0916 hr) and…”
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The influence of leaf-monkeys on their feeding trees in a cyclone-disturbed environment by Dittus, W.P.J

“…A cyclone in November 1978 caused extensive damage to a site of natural dry evergreen forest in Sri Lanka. The cyclone destroyed more than 50 percent of the…”
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