| sarcocystis sp. in wading birds (ciconiiformes) from florida. | sarcocysts were found in striated muscle of 21 adult wading birds among 145 examined grossly and 70 examined histologically (calculated prevalence = 24%), and in none of 332 immature wading birds examined from florida (usa). six of 12 species of ciconiforms were infected (ardea herodias, casmerodius albus, egretta caerulea, nyctanassa violacea, butorides striatus, eudocimus albus). cysts were filamentous, usually extended the entire length of the muscle fiber, and were visible grossly in 33% of ... | 1994 | 8151820 |
| m aritrema corai n. sp. (digenea: microphallidae) from the white ibis eudocimus albus (linnaeus) (aves: threskiornithidae) in mexico. | m aritrema corai n. sp. is described based on material from the intestine of the white ibis eudocimus albus (l.) (threskiornithidae) in mexico. the new species can be distinguished morphologically from all congeners by the unique combination of the following morphological features: a very long cirrus sac attenuated distally [cirrus sac to body length ratio 1:0.90-1.29 (mean 1:1.07)]; a large, elongate-oval seminal receptacle, located dorsally between the cirrus sac and ovary; and long, filiform, ... | 2016 | 26453094 |
| urbanized white ibises (eudocimus albus) as carriers of salmonella enterica of significance to public health and wildlife. | worldwide, salmonella spp. is a significant cause of disease for both humans and wildlife, with wild birds adapted to urban environments having different opportunities for pathogen exposure, infection, and transmission compared to their natural conspecifics. food provisioning by people may influence these factors, especially when high-density mixed species flocks aggregate. white ibises (eudocimus albus), an iconic everglades species in decline in florida, are becoming increasingly common in urb ... | 2016 | 27768705 |
| waterbirds (other than laridae) nesting in the middle section of laguna cuyutlán, colima, méxico. | laguna de cuyutlán, in the state of colima, mexico, is the only large coastal wetland in a span of roughly 1150 km. despite this, the study of its birds has been largely neglected. between 2003 and 2006 we assessed the waterbirds nesting in the middle portion of laguna cuyutlán, a large tropical coastal lagoon, through field visits. we documented the nesting of 15 species of non-laridae waterbirds: neotropic cormorant (phalacrocorax brasilianus), tricolored egret (egretta tricolor), snowy egret ... | 2008 | 18624252 |
| species differences in the sensitivity of avian embryos to methylmercury. | we injected doses of methylmercury into the air cells of eggs of 26 species of birds and examined the dose-response curves of embryo survival. for 23 species we had adequate data to calculate the median lethal concentration (lc(50)). based on the dose-response curves and lc(50)s, we ranked species according to their sensitivity to injected methylmercury. although the previously published embryotoxic threshold of mercury in game farm mallards (anas platyrhynchos) has been used as a default value ... | 2009 | 18421496 |
| determining habitat quality for species that demonstrate dynamic habitat selection. | determining habitat quality for wildlife populations requires relating a species' habitat to its survival and reproduction. within a season, species occurrence and density can be disconnected from measures of habitat quality when resources are highly seasonal, unpredictable over time, and patchy. here we establish an explicit link among dynamic selection of changing resources, spatio-temporal species distributions, and fitness for predictive abundance and occurrence models that are used for shor ... | 2015 | 27069617 |
| linking dynamic habitat selection with wading bird foraging distributions across resource gradients. | species distribution models (sdm) link species occurrence with a suite of environmental predictors and provide an estimate of habitat quality when the variable set captures the biological requirements of the species. sdms are inherently more complex when they include components of a species' ecology such as conspecific attraction and behavioral flexibility to exploit resources that vary across time and space. wading birds are highly mobile, demonstrate flexible habitat selection, and respond qui ... | 2015 | 26107386 |
| physiological condition of juvenile wading birds in relation to multiple landscape stressors in the florida everglades: effects of hydrology, prey availability, and mercury bioaccumulation. | the physiological condition of juvenile birds can be influenced by multiple ecological stressors, and few studies have concurrently considered the effects of environmental contaminants in combination with ecological attributes that can influence foraging conditions and prey availability. using three temporally distinct indices of physiological condition, we compared the physiological response of nestling great egrets (ardea alba) and white ibises (eudocimus albus) to changing prey availability, ... | 2014 | 25184221 |
| feather mercury concentrations and physiological condition of great egret and white ibis nestlings in the florida everglades. | mercury contamination in the florida everglades has reportedly played a role in the recent decline of wading birds, although no studies have identified a mechanism leading to population-level effects. we assessed feather mercury levels in great egret (ardea alba; n=91) and white ibis (eudocimus albus; n=46) nestlings at breeding colonies in the florida everglades during a year (2006) with excellent breeding conditions (characterized by hydrology leading to concentrated prey) and a year with belo ... | 2009 | 19217646 |
| wading birds as bioindicators of mercury contamination in florida, usa: annual and geographic variation. | mercury contamination in wetland biota is often dynamic, difficult to predict, and costly to track. in this paper, we present results from a six-year study of growing feathers of piscivorous birds as monitors of wetland hg exposure in florida, usa, wetlands. between 1994 and 2000, we collected feathers of growing great egret (ardea alba) nestlings from colonies in the freshwater everglades of southern florida, and during 1998, feathers were collected from chicks of both great egrets and white ib ... | 2002 | 11804050 |
| biomonitoring environmental contaminants near a municipal solid-waste combustor: a decade later. | during the 1999 nesting season, eggs and nestlings of anhingas (anhinga anhinga) and white ibises (eudocimus albus) were collected from a colony located on the site of a municipal solid-waste (msw) combustor and analyzed for residues of chemicals potentially released from this facility. concentrations of most residues, including tetrachlorodibenzo-p-dioxin (tcdd). tetrachlorodibenzofuran (tcdf), arsenic, beryllium, cadmium and lead, were at levels comparable to those found during a similar surve ... | 2002 | 11843530 |
| erection of ibirhynchus gen. nov. (acanthocephala: polymorphidae), based on molecular and morphological data. | the genus southwellina is composed of 3 described species, i.e., s. hispida (the type species), s. dimorpha, and s. macracanthus. all 3 are endoparasites of fish-eating birds that have worldwide distributions. morphologically, the genus is characterized by possessing a short and compact trunk, 2 fields of spines in the anterior region of the trunk (in at least 1 sex), a short cylindrical proboscis (sometimes with a swollen region armed with numerous longitudinal rows of hooks), a double-walled p ... | 2010 | 21348614 |
| biomonitoring environmental contaminants near a municipal solid-waste combustor. | tetrachlorodibenzo-p-dioxin (tcdd), tetrachlorodibenzofuran (tcdf) and selected metal concentrations were measured in eggs and nestlings of anhingas (anhinga anhinga) and white ibises (eudocimus albus) collected from a colony next to a municipal solid-waste (msw) combustor and ash landfill. most of the measured residues, including tcdd, tcdf, arsenic, beryllium, cadmium and nickel, remained at pre-operational levels during the first five years of facility operation. selenium (in anhingas) and me ... | 1997 | 15093437 |
| organochlorine residues in six species of estuarine birds, south carolina, 1971-75. | in south carolina between 1971 and 1975, authors evaluated the occurrence of organochlorine residues in the laughing gull (larus atricilla), white ibis (eudocimus albus), glossy ibis (plegadis falcinellus), american oystercatcher (haematopus palliatus), willet (catoptrophorus semipalmatus), and ruddy turnstone (arenaria interpres). tissues of birds found dead and eggs were analyzed, eggshell thicknesses were measured, and incidental observations were made of reproductive success and population s ... | 1979 | 117426 |
| effects of methylmercury and spatial complexity on foraging behavior and foraging efficiency in juvenile white ibises (eudocimus albus). | methylmercury is a globally distributed neurotoxin, endocrine disruptor, and teratogen, the effects of which on wildlife at environmentally relevant levels are largely unknown. in birds, foraging efficiency and learning may be sensitive endpoints for sublethal methylmercury toxicity, and these endpoints also may be biologically relevant at the population level. in the present study, groups of wild-caught, prefledgling white ibises (eudocimus albus) were raised in a free-flight, open-air aviary o ... | 2008 | 18315390 |
| reproductive physiology of free-living white ibises (eudocimus albus) in the florida everglades. | we measured plasma concentrations of testosterone, estradiol, progesterone, and corticosterone; and recorded changes in gonad size, body condition, molt, and brood patch development of free-living adult white ibises (eudocimus albus) during the breeding season in the florida everglades. white ibises are colonially breeding, long-legged wading birds that inhabit freshwater and estuarine wetlands. they have flexible breeding schedules (nest initiation dates can range from january to september) and ... | 2003 | 12899853 |
| environmental contaminants and productivity in an extinct heronry at charleston harbor, south carolina, u.s.a., 1984. | our objectives were to collect information on contaminant levels and productivity of wading birds at the drum island heronry in charleston harbor, south carolina, before diversion of the cooper river took place in 1985. the diversion was expected to reduce water flow by ∼80% into the harbor, thereby concentrating industrial effluents near the heronry with potentially harmful effects. hatching success of white ibises (eudocimus albus) in 1984 averaged 66% and 1.0 chick per nest survived to three ... | 1996 | 24198091 |
| hematozoa and mallophaga from the white ibis, eudocimus albus l., in florida. | | 1980 | 6767833 |
| polycyclorchis eudocimi gen. et sp. n. (trematoda: cyclocoelidae) from the trachea of the white ibis, eudocimus albus l. | | 1973 | 4687514 |
| the hypopi (acarina: hypoderidae) from the subcutaneous tissues of the white ibis, eudocimus albus l. | | 1971 | 5146454 |
| endocrine disruption in white ibises (eudocimus albus) caused by exposure to environmentally relevant levels of methylmercury. | methylmercury is a globally distributed pollutant and upper trophic level aquatic fauna are at particularly high risk of exposure. although methylmercury is known to have a number of neurological and developmental effects, relatively little is known about effects on endocrine disruption and reproduction in aquatic fauna, particularly in response to chronic exposure at low concentrations. we experimentally exposed captive white ibises for 3.5 years (2005-2008) to dietary methylmercury at three en ... | 2011 | 21801696 |
| survival of white ibises (eudocimus albus) in response to chronic experimental methylmercury exposure. | although methylated mercury (mehg) is known to have neurological, immunological, reproductive, and endocrine effects on vertebrates at low environmental exposure levels, effects on survival of exposed birds have not been demonstrated in the wild. here, we report on survival of the same group of white ibises (eudocimus albus) during exposure to 4 levels of dietary mehg in captivity and later as depurated free-ranging animals. ibises were chronically exposed in captivity to dietary mehg in groups ... | 2011 | 21184176 |
| sublethal effects of methylmercury on fecal metabolites of testosterone, estradiol, and corticosterone in captive juvenile white ibises (eudocimus albus). | methylmercury (mehg) is a globally distributed neurotoxin, endocrine disruptor, and teratogen, and its effects on birds are poorly understood, especially within an environmentally relevant exposure range. in an effort to understand the potential causal relationship between mehg exposure and endocrine development, we established four dietary exposure groups (0 [control], 0.05, 0.1, and 0.3 mg/kg wet wt/d of mehg) of postfledging white ibises (eudocimus albus) in a divided, free-flight aviary that ... | 2009 | 19045935 |
| experimental infections and serology indicate that american white ibis (eudociumus albus) are competent reservoirs for type a influenza virus. | the american white ibis (eudocimus albus) is a nomadic wading bird common to wetland habitats in the southeastern us. in south florida, us, habitat depletion has driven many ibis to become highly urbanized. although they forage in neighborhood parks, artificial wetlands, backyards, and golf courses, the majority continue to nest in natural wetlands, often in dense, mixed species colonies. adults and juveniles commonly disperse thousands of kilometers to other breeding colonies along the gulf and ... | 2020 | 31895646 |
| diversity and prevalence of hemoparasites of wading birds in southern florida, usa. | relatively few studies on hemoparasites have been conducted on wading birds in the families ardeidae and threskiornithidae (order pelecaniformes), especially in the united states. in this study, we obtained baseline data on the prevalence and genetic diversity of haemosporidian parasites in wading birds opportunistically sampled from southern florida, usa. we detected blood parasites in white ibis (eudocimus albus), glossy ibis (plegadis falcinellus), green heron (butorides virescens), and rosea ... | 2017 | 29379711 |
| assessing the contributions of intraspecific and environmental sources of infection in urban wildlife: salmonella enterica and white ibis as a case study. | conversion of natural habitats into urban landscapes can expose wildlife to novel pathogens and alter pathogen transmission pathways. because transmission is difficult to quantify for many wildlife pathogens, mathematical models paired with field observations can help select among competing transmission pathways that might operate in urban landscapes. here we develop a mathematical model for the enteric bacteria salmonella enterica in urban-foraging white ibis ( eudocimus albus) in south florida ... | 2018 | 30958239 |
| from wetland specialist to hand-fed generalist: shifts in diet and condition with provisioning for a recently urbanized wading bird. | many wildlife species shift their diets to use novel resources in urban areas. the consequences of these shifts are not well known, and consumption of reliable-but low quality-anthropogenic food may present important trade-offs for wildlife health. this may be especially true for carnivorous species such as the american white ibis (eudocimus albus), a nomadic wading bird which has been increasingly observed in urban parks in south florida, usa. we tested the effects of anthropogenic provisioning ... | 2018 | 29531152 |
| early breeding failure in birds due to environmental toxins: a potentially powerful but hidden effect of contamination. | toxin emissions and legacies are major global issues affecting many species through, among other effects, endocrine disruption and reproductive impairment. assessment of toxin risk to wildlife focuses mostly on offspring-related metrics, while the lack of breeding initiation or early breeding failure has received less attention. we tested whether exposure to methyl mercury (mehg) results in early breeding failure and reduced number of breeding birds using observational and experimental data. we ... | 2020 | 33103894 |
| the movements of a recently urbanized wading bird reveal changes in season timing and length related to resource use. | the american white ibis (eudocimus albus) is a nomadic wading bird that is increasing the amount of time spent foraging in urban areas, relying on artificial wetlands and other anthropogenic resources year-round. in this study, we explore whether and how american white ibis association with urban environments is predictive of variation in the timing and length of behavioral seasons. other urbanized species exhibit altered annual cycles such as loss of migratory behavior and year-round breeding r ... | 2020 | 32191732 |
| gut microbiome shifts with urbanization and potentially facilitates a zoonotic pathogen in a wading bird. | microbial communities in the gastrointestinal tract influence many aspects of host health, including metabolism and susceptibility to pathogen colonization. these relationships and the environmental and individual factors that drive them are relatively unexplored for free-living wildlife. we quantified the relationships between urban habitat use, diet, and age with microbiome composition and diversity for 82 american white ibises (eudocimus albus) captured along an urban gradient in south florid ... | 2020 | 32134945 |