Zoo Biology

Article	Citations
Visitor presence and a changing soundscape, alongside environmental parameters, can predict enclosure usage in captive flamingos	21
Predicting susceptibility for SARS‐CoV‐2 infection in domestic and wildlife animals using ACE2 protein sequence homology	20
An evaluation of interactive projections as digital enrichment for orangutans	18
Genetic assessment of a conservation breeding program of the houbara bustard (Chlamydotis undulata undulata) in Morocco, based on pedigree and molecular analyses	16
Effects of a recurring late‐night event on the behavior and welfare of a population of zoo‐housed gorillas	15
Inbreeding depression in sperm quality in a critically endangered amphibian	14
The effect of visitors on the behavior of zoo‐housed western lowland gorillas (Gorilla gorilla gorilla)	13
Testing use of a potential cognitive enrichment device by an Indo‐Pacific bottlenose dolphin (Tursiops aduncus)	12
Differing animal welfare conceptions and what they mean for the future of zoos and aquariums, insights from an animal welfare audit	12
Assessing preferences of two zoo‐housed Aldabran giant tortoises (Aldabrachelys gigantea) for three stimuli using a novel preference test	12
Biological and environmental factors as sources of variation in nocturnal behavior of giraffe	11
Mission impossible or mission accomplished: Do zoo organizational missions influence conservation practices?	11
Preliminary investigation of the effects of a concert on the behavior of zoo animals	10
Social and environmental impacts on sleep in captive Asian elephants (Elephas maximus)	10
Zoo soundscape: Daily variation of low‐to‐high‐frequency sounds	9
Animal‐human two‐shot images: Their out‐of‐context interpretation and the implications for zoo and conservation settings	9
Preference assessments as a tool to evaluate environmental enrichment	9
Recovered after an extreme bottleneck and saved by ex situ management: Lessons from the Alagoas curassow (Pauxi mitu [Linnaeus, 1766]; Aves, Galliformes, Cracidae)	8
Estrous cyclicity and reproductive success are unaffected by translocation for the formation of new reproductive pairs in captive red wolves (Canis rufus)	8
Evaluation of vitamin A gut loading in black soldier fly larvae (Hermetia illucens)	8
Increasing animal cognition research in zoos	8
New insights into dietary management of polar bears (Ursus maritimus) and brown bears (U. arctos)	8
A retrospective analysis of mortality in captive Magellanic penguins (Spheniscus magellanicus) in the United States, 2008–2018	8
Increasing browse and social complexity can improve zoo elephant welfare	8
The historical development of juvenile mortality and adult longevity in zoo‐kept carnivores	7

Enrichment devices for green turtles (Chelonia mydas) reared in captivity programs	7
Psychological and social well‐being of bony fishes in zoos and aquariums	7
Monitoring great ape heart health through innovative electrocardiogram technology: Training methodologies and welfare implications	7
In search of the optimal enrichment program for zoo‐housed animals	7
Impacts of the season and reproductive status on fecal reproductive and adrenocortical steroid metabolites in zoo Cuban crocodiles (Crocodylus rhombifer)	6
Diurnal variation in serum concentrations of cortisol in captive African (Loxodonta africana) and Asian (Elephas maximus) elephants	6
The impact of in‐person and video‐recorded animal experiences on zoo visitors' cognition, affect, empathic concern, and conservation intent	6
Don't use it? Don't lose it! Why active use is not required for stimuli, resources or “enrichments” to have welfare value	6
The historical development of zoo elephant survivorship	6
Bearing fruit: Piloting a novel judgment bias task in an American black bear	6
Investigating food preference in zoo‐housed meerkats	5
Effects of GnRH agonists on testosterone and testosterone‐stimulated parameters for contraception and aggression reduction in male lion‐tailed Macaques (Macaca silenus)	5
Strategies for establishing and using genome resource banks to protect genetic diversity in conservation breeding programs	5
Can colored object enrichment reduce the escape behavior of captive freshwater turtles?	5
The utility of social network analysis for informing zoo management: Changing network dynamics of a group of captive hamadryas baboons (Papio hamadryas) following an introduction of two young m	5
Fecal sex steroids and reproductive behaviors in harpy eagles (Harpia harpyja)	5
Is the natural UV zone important for successful captive propagation of the Panther Chameleon (Furcifer pardalis); are different UVB irradiance exposures that generate a similar dose equally suc	5
Evaluation of the damage caused by in vitro culture and cryopreservation to dermal fibroblasts derived from jaguars: An approach to conservation through biobanks	5
Diurnal variation of salivary cortisol in captive African elephants (Loxodonta africana) under routine management conditions and in relation to a translocation event	5
Sex‐specific actuarial and reproductive senescence in zoo‐housed tiger (Panthera tigris): The importance of sub‐species for conservation	5
Visitors' perceptions of zoo‐housed lesser anteater (Tamandua tetradactyla) welfare: Observation plays a larger role than a brief informative talk	5
Genetic assessment of captive red pandas (Ailurus fulgens) in American zoos to address management separation by putative subspecies	5
Individual‐level variability among trust criteria relevant to zoos and aquariums	4
Understanding sociality and behavior change associated with a nesting event in a captive flock of great white pelicans	4
Comparative nutrient analysis of four species of cockroaches used as food for insectivores by life stage, species, and sex	4
Milk composition of white rhinoceros over lactation and comparison with other Perissodactyla	4
Circulating nutrients and hematological parameters in managed African elephants (Loxodonta Africana) over a 1‐year period	4
Daily lettuce supplements promote foraging behavior and modify the gut microbiota in captive frugivores	4
Fecal progesterone and estrogen metabolite monitoring for cyclicity and pregnancy in southern tamandua (Tamandua tetradactyla)	4
Furred and feathered friends: How attached are zookeepers to the animals in their care?	4
Cane toad (Rhinella marina) vitamin A, vitamin E, and carotenoid kinetics	4
Body mass and growth rates in captive chimpanzees (Pan troglodytes) cared for in African wildlife sanctuaries, zoological institutions, and research facilities	4
Natural environmental conditions and collaborative efforts provide the secret to success for sand tiger shark Carcharias taurus reproduction in aquaria	4
Zoo animals as “proxy species” for threatened sister taxa: Defining a novel form of species surrogacy	4
Pterygodermatites nycticebi infections in golden lion tamarins (Leontopithecus rosalia rosalia) and aye‐ayes (Daubentonia madagascariensis) from a German zoo	3
Spermatic profile of captive giant anteaters (Myrmecophaga tridactyla): Knowing more to preserve better	3
Reproductive cycles of neotropical boid snakes evaluated by ultrasound	3
Weight management towards physiological and behavioral wellbeing for chimpanzees living under human care	3
The past, present and future of hormonal contraceptive use in managed captive female tiger populations with a focus on the current use of deslorelin acetate	3
Wearing the devil down: Rate of tooth wear varies between wild and captive Tasmanian devils	3
Effects of age on sperm quality metrics in endangered Mississippi gopher frogs (Lithobates sevosus) from captive populations used for controlled propagation and reintroduction efforts	3
Colony composition and nutrient analysis of Polyrhachis dives ants, a natural prey of the Chinese pangolin (Manis pentadactyla)	3
Composition of browses consumed by Matschie's tree kangaroo (Dendrolagus matschiei) sampled from home ranges in Papua New Guinea	3
A comparison of staff presence and signage on zoo visitor behavior	3
Validation of an enzyme immunoassay for measurement of fecal dehydroepiandrosterone sulfate in gibbons and siamangs	3
Effects of Lupron and surgical castration on fecal androgen metabolite concentrations and intermale aggression in capybaras (Hydrochoerus hydrochaeris)	3
The effects of Zoo Lights on animal welfare: A case study of great Indian hornbills at Denver Zoo	3
American alligator (Alligator mississippiensis) weight gain in captivity and implications for captive reptile body condition	3
Dither: A unifying model of the effects of visitor numbers on zoo animal behavior	3
Review of threatened Malagasy freshwater fishes in zoos and aquaria: The necessity of an ex situ conservation network—A call for action	3

Conservation medicine and One Health in zoos: Scope, obstacles, and unrecognized potential	3
Social networks research in ex situ populations: Patterns, trends, and future directions for conservation‐focused behavioral research	3
Sentinel behavior in captive meerkats (Suricata suricatta)	3
Staff perceptions of COVID‐19 impacts on wildlife conservation at a zoological institution	3
Adaptive management in a conservation breeding program: Mimicking habitat complexities facilitates reproductive success in narrow‐headed gartersnakes (Thamnophis rufipunctatus)	3
Validating the use of fecal glucocorticoid metabolite analysis to assess the adrenocortical activity of the zoo‐housed Sichuan takin (Budorcas taxicolor tibetana)	3
The perception of felid welfare by zookeepers in North America and the implications for zoo managers	3
Contextual impacts on individual and synchronous breathing rate variations in three captive odontocete groups	3
Breeding history and husbandry of the Superb Bird‐of‐paradise (Lophorina superba)	2
Maximum longevity and juvenile mortality in zoo‐housed mangabeys	2
Conservation psychology strategies for collaborative planning and impact evaluation	2
Beyond inspiration: Translating zoo and aquarium experiences into conservation behavior	2
Genotyping on the ark: A synthesis of genetic resources available for species in zoos	2
Using social network analysis to inform on the process of one‐male‐unit formation of hamadryas baboons (Papio hamadryas) in captivity	2
Magnesium concentration influences size and pulse rate in the upside‐down jellyfish, Cassiopea andromeda	2
Survey of current group demographics and management practices of bachelor groups of western lowland gorillas (Gorilla gorilla gorilla) across North America	2
Preference of intake of different tree leaves preserved with drying and ensiling by nyala antelope (Tragelaphus angasii)	2
Playful mouth‐to‐mouth interactions of belugas (Delphinapterus leucas) in managed care	2
Fecal microbiota transplants modulate the gut microbiome of a two‐toed sloth (Choloepus didactylus)	2
Five psychological principles of codesigning conservation with (not for) communities	2
Short‐term cold storage of seminal samples of the golden lancehead pitviper (Bothrops insularis)	2
Effects of a modern exhibit design on captive tiger welfare	2
Effect of enclosure expansion on the activity budgets of eastern black‐and‐white colobus monkeys, Colobus guereza	2
Macronutrient composition of milk from two captive African elephant (Loxodonta africana) cows	2
The influence of welfare and bonds with animals on the job satisfaction of felid keepers in North America	2
Retrospective analysis of hibernation parameters and breeding success in captive Vancouver Island marmots (Marmota vancouverensis): 1997–2018	2
Flock size and structure influence reproductive success in four species of flamingo in 540 captive populations worldwide	2
Measuring the effectiveness of using rangers to deliver a behavior change campaign on sustainable palm oil in a UK zoo	2
Dietary lutein supplementation improves immunity and antioxidant status of captive Indian leopards (Panthera fusca)	2
Feed intake and dietary composition of iron (Fe), copper (Cu), vitamin E, and tannic acid of five captive black rhinoceros (Diceros bicornis) in a UK collection	2
Estimating the total length of Mekong giant catfish, Pangasianodon gigas, in an aquarium via stereo‐video shooting and direct linear transformation	2
Maximizing the potential for living cell banks to contribute to global conservation priorities	2
Evoking empathy—An overlooked role of animal statues in zoos	2
Single or repeated immunization against GnRH fails to completely abolish spermatogenesis in dwarf bucks (Capra hircus)	2
Growth, calcification, and photobiology of the threatened coral Acropora cervicornis in natural versus artificial light	2
Reasons for unfulfilled breeding and transfer recommendations in zoos and aquariums	2
Adapting conservation breeding techniques using a data‐driven approach to restore the ‘Alalā (Hawaiian crow, Corvus hawaiiensis)	2
Daily activity profile of the golden mantella in the “Froggotron”—A replicated behavioral monitoring system for amphibians	2
Seasonal differences in hair growth rates of captive aye‐aye, red ruffed, and black‐and‐white ruffed lemurs	2
Melengestrol acetate contraceptive implant use in colobus monkeys (Colobus guereza): Patterns through time and differences in reproductive potential and live births	2
Influence of institutional attributes on fulfillment of transfer and breeding recommendations in zoos and aquariums	2
Optimizing captive short‐beaked echidna (Tachyglossus aculeatus) fecal sample identification and hormonal analysis	2
Prolonged hypo‐salinity to control Neobenedenia spp. monogenean infection in large display aquaria	1
Antillean manatee calves in captive rehabilitation change vocal behavior in anticipation of feeding	1
It's a sign: Animal welfare and zoo type are predictors of animal identification signage usage and quality at zoo exhibits	1
Issue Information	1
Immunocontraception of male and female giraffes using the GnRH vaccine Improvac®	1
Bridging conservation across the ex situ‐in situ spectrum: Insights into the reproductive ecology of the threatened narrow‐headed gartersnake (Thamnophis rufipunctatus)	1
Documenting nocturnal activity of dragon‐headed katydids (Lesina blanchardi) under artificial light	1
A perspective on ungulate management and welfare assessment across the traditional zoo to large landscape spectrum	1
Age‐based variation in calf independence, social behavior and play in a captive population of African elephant calves	1
From left to right all through the night: Characteristics of lying rest in zoo elephants	1
The Palearctic blackfly Simulium equinum (Diptera: Simuliidae) as a biting pest of captive nyala antelopes (Tragelaphus angasii)	1
Predictors of testosterone in zoo‐managed male African elephants (Loxodonta Africana)	1
A new candling procedure for thick and opaque eggs and its application to avian conservation management	1
Individual and community‐level impacts of the unarmed all‐women Black Mamba Anti‐Poaching Unit	1
Observations on the use of passive integrated transponder (PIT) tags in teleosts and elasmobranchs at a public aquarium, 728 cases, 2007–2020	1
Artificial incubation and hand‐rearing of Superb Bird‐of‐paradise(Lophorina superba)	1
Impact of female contraception for population management on behavior and social interactions in a captive troop of Guinea baboons (Papio papio)	1
Exploring the behaviors and social preferences of a large, multigenerational herd of zoo‐housed southern white rhinoceros (Ceratotherium simum simum)	1
Losing the forest for the tree? On the wisdom of subpopulation management	1
Ex situ breeding programs benefit from science‐based cooperative management	1
Ensiling of maple leaves and its use in winter nutrition of mantled guereza (Colobus guereza)	1
Comparison between concentration and type of intracellular cryoprotectants and the presence of sucrose for cryobanks of somatic cells derived from captive Pumas	1
Case study: Modifying repetitive behavior in a polar bear (Ursus maritimus)	1
The fate and movements of aquarium‐released giant trevally Caranx ignobilis inferred from acoustic telemetry	1
The Zone Overlap Index: A new measure of shared resource use in the zoo	1
Dietary protein requirement for captive juvenile green turtles (Chelonia mydas)	1
Behavioral development of a captive polar bear (Ursus maritimus) cub in the maternal den	1
Grading fecal consistency in an omnivorous carnivore, the brown bear: Abandoning the concept of uniform feces	1
Effects of honey locust seed pods on the behavior and nutrient intake of zoo‐housed François langurs and prehensile‐tailed porcupines	1
Distribution of uterine histological changes in aged captive cheetahs (Acinonyx jubatus)	1
Institutional networks in cooperative population management: Exploring patterns in transfer fulfillment	1
Factors affecting captive female giraffe stress response: Male presence, small enclosure, and low temperature	1
Evaluation of different skin regions derived from a postmortem jaguar, Panthera onca (Linnaeus, 1758), after vitrification for development of cryobanks from captive animals	1
Bioacoustics as a tool to monitor the estrus cycle in a female slow loris (Nycticebus sp.)	1
Vaginal foreign bodies in six nonhuman primates with underlying pathological conditions	1
A modified diet to support conservation of the Atala hairstreak butterfly (Eumaeus atala Poey)	1
UV irradiance effects on komodo dragon (Varanus komodoensis) vitamin D3, egg production, and behavior: A case study	1
Factors affecting the behavior of captive white rhinoceros (Ceratotherium simum) and the accuracy of ad‐hoc keeper data	1

Zoo‐housed mammals do not avoid giving birth on weekends	1
The effects of a zoo environment on free‐living, native small mammal species	1
First natural breeding of the endangered dusky gopher frog (Lithobates sevosus) in captivity	1
Luteal phase length, endometrial edema, and behavior differentiate post‐ovulatory events in a giant panda (Ailuropoda melanoleuca)	1
Exploration of cultural norms and behavioural beliefs about zoo animal behaviour, welfare, ethics and husbandry practices in a sample of the international zoo community	1
Facilitating behavior change: Introducing the Transtheoretical Model of Behavior Change as a conservation psychology framework and tool for practitioners	1
Knowledge‐based enrichment: Development of a novel enrichment device for captive chimpanzees	1
Historical development of the survivorship of zoo rhinoceroses—A comparative historical analysis	1
Captive breeding challenges posed by Malaysian and Bornean Peacock‐pheasants (Polyplectron malacense and P. schleiermacheri)	1
Distinguishing mobility and immobility when establishing species‐specific activity budgets: A case study with gorillas (Gorilla berengei berengei and Gorilla gorilla gorilla)	1
Material and food exploration by zoo‐housed animals can inform cognition and enrichment apparatus design	1
“The influence of olfactory enrichment on the behavior of two captive New World primates: Black‐capped capuchin (Sapajus apella) and common marmoset (Callithrix jacchus)”	1
Reproductive suppression of giraffe (Giraffa camelopardalis) under managed care using a GnRH immunological product	1
Captive rearing of orphaned African wild dogs (Lycaon pictus) in Namibia: A case study	1