Publications

TitleAbstractYear
Filter
PMID
Filter
bird species composition and feeding guilds based on point count and mist netting methods at the paya indah wetland reserve, peninsular malaysia.a comparison study was conducted to determine the bird species composition, relative abundance, species diversity and feeding guilds based on point count (pc) and mist netting (mn) at the paya indah wetland reserve (piwr), peninsular malaysia. a total of 13872 bird observations belonging to 100 species and 38 families were recorded using the pc method over 15 consecutive months, and a total of 1478 bird individuals belonging to 65 species and 33 families were captured using the mn method over 12 ...201024575196
dietary protein influences the rate of 15n incorporation in blood cells and plasma of yellow-vented bulbuls (pycnonotus xanthopygos).the rate at which an animal's tissues incorporate the isotopic composition of food determines the time window during which ecologists can discern diet changes. we investigated the effect of protein content in the diet on the incorporation rate of (15)n into the plasma proteins and blood cells of yellow-vented bulbuls (pycnonotus xanthopygos). using model comparison analyses, we found that one-compartment models described incorporation data better than two-compartment models. dietary protein cont ...200818204001
the influence of ethanol on feeding in the frugivorous yellow-vented bulbul (pycnonotus xanthopygos).the sugars in fleshy fruits provide a rich source of energy to frugivorous animals. however, these carbohydrates also serve as a substrate for alcoholic fermentation by yeasts, ethanol being the main by-product of this process. ethanol ingestion via frugivory thus occurs in a diverse assemblage of invertebrate and vertebrate taxa, including numerous species of birds. we tested the roles of ethanol as an odor cue for resource location by adult yellow-vented bulbuls (pycnonotus xanthopygos) and as ...200818024002
changes in the composition of the urine of yellow-vented bulbuls (pycnonotus xanthopygos): the effects of ambient temperature, nitrogen, and water intake.uricotely (uric acid >50% of urinary nitrogen) in birds was once considered ubiquitous. however, anna's hummingbirds (calypte anna) have been shown to be an exception to this rule; under conditions of low ambient temperature (t(a)) and on a nitrogen-free diet, they increased their water intake and often became ammonotelic (ammonia >50% of urinary nitrogen). our aim was to identify the effects of nitrogen intake, water intake, and t(a) on the ammonia excretion of yellow-vented bulbuls (pycnonotus ...201311731976
blood parasites of wild and domestic animals from south kalimantan (borneo), indonesia.wild and domestic animals trapped from forests, villages, and rice fields in south kalimantan (3 degrees 20' s, 115 degrees 02' e, 25 m) were examined for blood parasites using giemsa stained thick and thin blood films and nuclepore filter preparations of peripheral vein and heart puncture blood. presbytis cristatus (silvered leaf monkey) (25%) and felis catus (domestic cat) (7%) were infected with brugia malayi and b. pahangi. in addition, p. cristatus was infected with wuchereria kalimantani ( ...19816789456
can birds be ammonotelic? nitrogen balance and excretion in two frugivores.we measured minimal nitrogen requirements (mnr), total endogenous nitrogen loss (tenl) and the effect of protein and water intake on the nitrogenous waste composition in two frugivorous bird species: yellow-vented bulbuls pycnonotus xanthopygos and tristram's grackles onychognathus tristrami. the nitrogen requirements of both species were much lower than expected for their body mass. the two species differed in the composition of the nitrogenous waste that they produced. the grackles were uricot ...200515767304
ecological connectivity networks in rapidly expanding cities.urban expansion increases fragmentation of the landscape. in effect, fragmentation decreases connectivity, causes green space loss and impacts upon the ecology and function of green space. restoration of the functionality of green space often requires restoring the ecological connectivity of this green space within the city matrix. however, identifying ecological corridors that integrate different structural and functional connectivity of green space remains vague. assessing connectivity for dev ...201728706999
global warming and body mass decline in israeli passerine birds.global warming may affect the physiology, distributions, phenology and adaptations of plants and animals. in israel, minimum summer temperatures increased by an average of 0.26 degrees c per decade during the second half of the 20th century. bergmann's rule predicts that, in warm-blooded animals, races from warm regions are smaller than races from cold regions. numerous studies have reported general correlations between body mass in fossil animals and independently established palaeoclimatic cha ...200111370968
Displaying items 1 - 8 of 8