Search Results - "Dittus, Wolfgang P. J."

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.,…”
Get more information

Validating skinfold thickness as a proxy to estimate total body fat in wild toque macaques (Macaca sinica) using the mass of dissected adipose tissue by Dittus, Wolfgang P.J., Gunathilake, K.A. Sunil

“…Skinfold thickness (SFT) has been used often in non‐human primates and humans as a proxy to estimate fatness (% body fat). We intended to validate the relation…”
Get full text

Shields on Electric Posts Prevent Primate Deaths: A Case Study at Polonnaruwa, Sri Lanka by Dittus, Wolfgang P J

“…When monkeys, such as the toque macaques (Macaca sinica) of Sri Lanka, seek food on the ground near human habitation, they may use electrical posts to escape…”
Get more information

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…”
Get more information

Arboreal adaptations of body fat in wild toque macaques (Macaca sinica) and the evolution of adiposity in primates by Dittus, Wolfgang P. J.

“…ABSTRACT There is a paucity of information on body composition and fat patterning in wild nonhuman primates. Dissected adipose tissue from wild toque macaques…”
Get full text

Vitamin D status in wild toque macaques (Macaca sinica) in Sri Lanka by Power, Michael L., Dittus, Wolfgang P. J.

“…The vitamin D receptor is found on most cells, including active immune cells, implying that vitamin D has important biological functions beyond calcium…”
Get full text

The biogeography and ecology of Sri Lankan mammals point to conservation priorities by Dittus, Wolfgang P. J.

“…All mammals originated on the supercontinent of Pangaea in the Mesozoic era during the “Age of Reptiles.” However, the crown ancestors of contemporary mammals…”
Get full text

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…”
Get full text

Sharing Space with Monkeys and Human Tolerance Are Critical Supplements to Primate Conservation, but Not Substitutes for Protected Nature Reserves: A Long-Term View from Sri Lanka, with a Reply to Rudran [2021] by Dittus, Wolfgang P J, Gunathilake, Sunil, Felder, Melissa

“…Many investigators of human-monkey competition (HMC) in Sri Lanka have revealed some common threads. Except at temple and protected sites, all monkeys were…”
Get more information

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

Gastro-intestinal helminths in a natural population ofMacaca sinica andPresbytis spp. at Polonnaruwa, Sri Lanka by Dewit, Ingrid, Dittus, Wolfgang P. J., Vercruysse, Jozef, Harris, Eileen A., Gibson, Dave I.

Get full text

Hematology of a natural population of toque macaques (Macaca sinica) at Oolonnaruwa, Sri Lanka by EKANAYAKE, Dilrukshi K, HORADAGODA, Neil U, MADURA SANJEEVANI, G. K, ARULKANTHAN, Appudurai, SUNIL GUNATILAKE, K. A, DITTUS, Wolfgang P. J

Get full text

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…”
Get full text