Publications

potential impact of wildlife on the tropical bont tick eradication program in the caribbean.	wildlife are hosts for a. variegatum throughout its range in africa, and have been demonstrated to serve as hosts for larvae and nymphs on several islands in the caribbean. studies conducted in the caribbean have indicated that most larvae and nymphs and all adults of the tick feed on livestock; therefore, eradication can be approached through the treatment of livestock. however, since small numbers of animals such as the mongoose are infested with larvae and nymphs, these animals may represent ...	1996	8784488
an unusual group-a rotavirus associated with an epidemic of diarrhea among three-month-old calves.	during the 1992 and 1993 breeding seasons, epidemics of diarrhea among calves approximately 3 months old in a cow/calf operation were reported. rotavirus was determined to be the probable cause, but because rotavirus typically affects younger calves, further investigations were conducted to determine the characteristics of the virus. virus isolated from the feces of 1 affected calf was found to be antigenically distinct from the vaccine strain used. the primary water source was a slough, and rap ...	1996	8603906
propagation of the tick amblyomma variegatum in the caribbean.	the tropical bont tick, amblyomma variegatum, is an african tick species which infests livestock and wildlife. it was probably introduced in the central eastern islands of the caribbean during the 18th or 19th century, with cattle shipped from senegal. in africa and the caribbean, this tick is a vector of heartwater (a rickettsial disease of ruminants) and is associated with acute dermatophilosis (a bacterial skin disease of animals). until 1948, only guadeloupe and the neighbouring islands of m ...	1995	8593414
potential role of cattle egrets, bubulcus ibis (ciconiformes: ardeidae), in the dissemination of amblyomma variegatum (acari: ixodidae) in the eastern caribbean.	the potential role of cattle egrets, bubulcus ibis (l.), in the dissemination of amblyomma variegatum (f.) in the eastern caribbean was evaluated. the status of cattle egrets as hosts for a. variegatum in antigua was determined during seven survey periods between september 1988 and may 1991. the mean prevalences of infestation by larvae and nymphs were 2.3 and 0.5%, respectively. the mean intensity and relative density of infestation by larvae were 8.8 (sd = 9.80) and 0.2 (sd = 0.28), respective ...	1993	8271244
heavy metal and selenium levels in feathers of young egrets and herons from hong kong and szechuan, china.	several species of herons and egrets frequently nest in colonies in areas where humans also concentrate. since the birds feed on intermediate-sized fish that themselves concentrate pollutants, they can be used not only to assess the levels of contaminants in avian tissues but as indicators of contaminants in the environment. the concentration of heavy metals and selenium in the breast feathers of fledgling black-crowned night herons nycticorax nycticorax and chinese pond herons ardeola bacchus f ...	1993	8215588
[the relationship between mosquito vectors and aquatic birds in the potential transmission of 2 arboviruses].	the authors studied for two years the role of the chicks of aquatic birds in the arboviral cycles in coastal lagoons in central panama in order to determine the relation between culex (melanoconion) ocossa and mansonia (mansonia) dyari mosquitoes in the transmission and dissemination of the viruses of saint louis encephalitis (sle) and venezuelan equine encephalitis (vee). mosquitoes were captured every fifteen days on two consecutive nights to isolate the virus, using light traps (cdc) and bait ...	1993	8101009
visual fields and eye movements in herons (ardeidae).	the visual fields and eye movements of three heron species (ardeidae; ciconiiformes): the cattle egret (bubulcus ibis), the squacco heron (ardeola ralloides), the western reef heron (egretta gularis schistacea) were determined in alert, restrained birds using an ophthalmoscopic technique. all three species can gain panoramic visual coverage of the frontal field around the bill, and a bird standing with its bill horizontal can view its own feet binocularly. the region in which binocular overlap i ...	1994	7953610
vector situation of tick-borne diseases in the caribbean islands.	the most important ticks transmitting diseases to ruminants in the caribbean islands are: amblyomma variegatum, vector of cowdriosis and associated with acute dermatophilosis; amblyomma cajennense, potential vector of cowdriosis; boophilus microplus, vector of babesiosis and anaplasmosis. at the present time, amblyomma variegatum is widespread in the lesser antilles from barbados to puerto rico. the intensity of the tick control program varies in the different islands and the tick infestation in ...	1995	7597781
isolation of yucaipa-like viruses from cattle egrets (ardeola ibis) in israel.		1981	7331598
prevalence of antibodies to japanese encephalitis and west nile viruses among wild birds in the krishna-godavari delta, andhra pradesh, india.	in the krishna-godavari delta region of the state of andhra pradesh, india, 866 sera obtained from trapped birds of 13 species were tested for neutralizing antibody to japanese encephalitis (je) virus; two species of birds belonging to the family ardeidae, ardeola grayii (pond heron) and bubulcus ibis (cattle egret), contributed 514 of these sera. neutralizing antibody to je virus--i.e. sera giving positive reactions--was detected in 179 sera (34.8%) from these two species; in addition, two sera ...	1981	7303138
organochlorine pesticide residues in some indian wild birds.	residues of bhc and ddt were estimated by gas-liquid chromatographic analysis of the internal body organs, depot fat, and blood plasma of a few species of indian wild birds, captured in and around the urban area of lucknow. total bhc and gamma-bhc (lindane) levels were high in breast muscle, liver, heart, and lung tissues of pigeon, crow, and vulture, compared with the respective tissues of chicken, cattle egret, and kite. more lindane and total bhc was found in tissues of vulture compared with ...	1981	7279596
bioaccumulation of lead and cadmium in the louisiana heron (hydranassa tricolor) and the cattle egret (bubulcus ibis).		1981	7250006
environmentally acquired lead, cadmium, and manganese in the cattle egret, bubulcus ibis, and the laughing gull, larus atricilla.	the concentrations of lead, cadmium, and manganese in the tissues of cattle egrets (bubulcus ibis) and laughing gulls (larus atricilla) gathered from the galveston bay region of texas were compared, to determine if different patterns of accumulation exist. their levels in these species were within the range reported for other bird species. lead levels in bone were comparable, but gulls had more lead in brain, kidney and liver tissues than the egrets, which suggested a higher rate of accumulation ...	1980	7189395
inhibition of tissue aryl hydrocarbon (benzo[a]pyrene) hydroxylase by 7,8-benzoflavone in birds.	1. addition of 7,8-benzoflavone (7,8-bf) inhibited both hepatic and renal constitutive activity of aryl hydrocarbon (benzo[a]pyrene) hydroxylase in vitro for a number of avian species. inhibition of hepatic benzo[a]pyrene hydroxylase was 70-94% in wild pigeon; 46-88% in homing pigeon; 85-93% in house crow; 18-53% in common kite; 56-86% in cattle egret; and for the renal enzyme was 43-84, 52-88, 18-73 and 13-48% respectively. 2. 3-methylcholanthrene treatment of homing pigeons resulted in the ind ...	1982	7136005
experimental transmission of capillaria philippinensis to birds.	capillaria philippinensis larvae from fish and adult and larval forms of the parasite from gerbil intestines established parent infections when given a stomach tube to several species of birds from taiwan. adult males, oviparous and larviparous females and larval stages were found in nycticorax nycticorax, bubulcus ibis, ixobrychus sinensis, gallinula chloropus and amaurornis phoenicurus. c. philippinensis also developed in pigeons, rostratula benghalensis, a few anas spp. and chickens. some bir ...	1983	6636279
isolation of a new arbovirus from the tick argas robertsi from a cattle egret (bubulcus ibis coromandus) colony in australia.	a new arbovirus was isolated from ticks of the species a. robertsi collected on 3 january 1980 from trees in which b. ibis coromandus was breeding. the breeding site is located in a swamp at latitude 27 degrees s., longitude 152 degrees e. in south-east queensland. larvae, nymphs and adults of a. robertsi were observed to feed on egrets. the serum of 29 out of 37 egrets from the same colony contained neutralizing antibodies to the virus. no information is available on the pathogenicity of this v ...	1984	6393929
two ectoparasites of the cattle egret (bubulcus ibis) in alabama.		1972	5078609
endoparasites of the cattle egret (bubulcus ibis) in alabama.		1972	5042057
growth and development of temperature regulation in nestling cattle egrets.		1974	4154173
visceral and subcutaneous acariasis caused by hypopi of hypodectes propus bulbuci in the cattle egret.	twenty-one of 24 adult male and female cattle egrets (bubulcus ibis ibis) collected in geneva county, alabama had numerous white cyst-like structures (1,466 microns x 354 microns) found within the loose connective tissues of the skeletal muscles of the inguinal region, beneath the serosa of the proventriculus and in the heart beneath the epicardium (one adult male bird). these were identified as hypopi of hypodectes (hypodectoides) propus bulbuci. histologic sections were prepared from the subcu ...	1987	3682100
serogroups of thermophilic campylobacters from humans and from non-human sources, israel 1982-1985.	the distribution of serogroups of thermophilic campylobacters isolated in israel from human patients (2421 isolates), chicken (942), turkeys (158), cattle (398), wild birds (234) and other sources, was studied. among the human isolates, 74 rog-serogroups were identified. the six most commonly isolated of these (1, 18; 11; 12; 8,23; 4 and 5,39) were found frequently in chickens. only four common serogroups in man were also common in cattle, three in turkeys and two in wild birds. two common serog ...	1987	3678392
danger of introducing heartwater onto the american mainland: potential role of indigenous and exotic amblyomma ticks.	the existence of heartwater on 3 islands of the central lesser antilles and the presence of an efficient vector originating from africa, amblyomma variegatum, on most of the islands of this region constitute a serious threat for livestock on the american mainland. the disease can be introduced there either by infected animals or infected ticks. the most likely way is probably the transportation of domestic animals which are heavily infested by ticks. due to the low rate of infection of ticks in ...	1987	3329328
[spreading of the tick amblyomma variegatum in the west indies: how can this serious menace be explained and what should be done?].	the author presents a brief history of the introduction and extension of the african tick amblyomma variegatum in the caribbean. the tick is particularly dangerous for the livestock industry because of its role as a vector of heartwater and its association with severe dermatophilosis. it is already distributed in the lesser antilles from puerto rico to barbados and st. vincent. the chronology of its sudden unexplained expansion since the 1960s corresponds well with the multiplication of the catt ...	1990	2103050
predators of the tick amblyomma variegatum (acari: ixodidae) in guadeloupe, french west indies.	some vertebrate species in guadeloupe are predators of free or parasitic stages of amblyomma variegatum (fabricius). among birds, 1.9% of the 421 identified animals found in the stomachs of grackles (quiscalus lugubris), 1.6% of the 364 animals found in the stomachs of free-ranging chickens, and 0.3% of the 4642 animals found in the stomach of cattle egrets (bubulcus ibis) were a. variegatum ticks. the most efficient predator of ticks was the tropical fire ant, solenopsis geminata, which was obs ...	1991	1773677
seasonal and geographical variation of organochlorine residues in birds from northwest mexico.	eight species of birds (129 individuals) were collected from three agricultural areas with long histories of pesticide use in northwestern mexico. plucked carcasses were analyzed for organochlorine (oc) pesticides and polychlorobiphenyls (pcbs). dde was found in all of the samples and at higher levels than other ocs. mean (geometric) dde concentrations varied from 0.04 (microgram/g) ppm in mourning doves (zenaida macroura) to 5.05 ppm in double-crested cormorants (phalacrocorax auritus). hexachl ...	1991	1722080
characteristic trend of persistent organochlorine contamination in wildlife from a tropical agricultural watershed, south india.	the residue levels of persistent organochlorines, such as hch (bhc: 1,2,3,4,5,6-hexachlorocyclohexane) isomers, ddt [1,1,1-trichloro-2,2-bis (p-chlorophenyl) ethane] compounds, pcbs (polychlorobiphenyls) and hcb (hexachlorobenzene), were measured in wildlife. the wildlife were sampled from terrestrial and aquatic habitats in and around the agricultural watershed of parangipettai, south india. on the basis of overall concentrations sigma hch ranked first followed by sigma ddt, sigma pcb and hcb, ...	1992	1637196
heavy metal and selenium levels in young cattle egrets from nesting colonies in the northeastern united states, puerto rico, and egypt.	colonially-nesting species of herons and egrets breed mainly in coastal areas, along rivers or near other large bodies of water. such areas are also preferred for human development, exposing nesting birds to various pollutants. from 1989-1991, the concentrations of heavy metals and selenium were studied in the feathers of fledgling cattle egrets bubulcus ibis, a terrestrially-feeding insectivore, from new york and delaware in the northeastern united states, from puerto rico, and from egypt. ther ...	1992	1444587
residue levels of organochlorines and mercury in cattle egret, bubulcus ibis, eggs from the faiyum oasis, egypt.		1992	1380352
pathomorphology of liver & bile duct of the heron, bubulcus ibis linn., infected with the trematode, pegosomum egretti srivastava, 1957.		1975	1205523
redescription of apharyngostrigea ramai (verma, 1936). a trematode of cattle egret.		1975	1158294
two digenetic trematodes from the cattle egret, bubulcus ibis (l.), from puerto rico.		1977	559065
seasonal study of the adrenal gland of some indian avian species.	adrenal glands of eight indian species of birds, namely columba livia, passer domesticus, corvus splendens, acridotheres tristis, acridotheres ginginianus, milvus migrans, francolinus pondicerianus and bubulcus ibis were examined during the sexually active and inactive phases of their annual reproductive cycles. excepting a ginginianus and m. migrans, among members of either sex of the remaining six species the weight of the adrenal gland increases during the period of sexual activity. histologi ...	1976	135472