OOIR: Observatory of International Research

Papers

(The TQCC of Zoo Biology is 3. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2020-05-01 to 2024-05-01.)

Article	Citations
Predicting susceptibility for SARS‐CoV‐2 infection in domestic and wildlife animals using ACE2 protein sequence homology	22
Visitor presence and a changing soundscape, alongside environmental parameters, can predict enclosure usage in captive flamingos	22
An evaluation of interactive projections as digital enrichment for orangutans	18
Differing animal welfare conceptions and what they mean for the future of zoos and aquariums, insights from an animal welfare audit	17
Genetic assessment of a conservation breeding program of the houbara bustard (Chlamydotis undulata undulata) in Morocco, based on pedigree and molecular analyses	17
Effects of a recurring late‐night event on the behavior and welfare of a population of zoo‐housed gorillas	15
The effect of visitors on the behavior of zoo‐housed western lowland gorillas (Gorilla gorilla gorilla)	13
Biological and environmental factors as sources of variation in nocturnal behavior of giraffe	12
Assessing preferences of two zoo‐housed Aldabran giant tortoises (Aldabrachelys gigantea) for three stimuli using a novel preference test	12
Preference assessments as a tool to evaluate environmental enrichment	11
Mission impossible or mission accomplished: Do zoo organizational missions influence conservation practices?	11
Social and environmental impacts on sleep in captive Asian elephants (Elephas maximus)	11
Animal‐human two‐shot images: Their out‐of‐context interpretation and the implications for zoo and conservation settings	10
Preliminary investigation of the effects of a concert on the behavior of zoo animals	10
Zoo soundscape: Daily variation of low‐to‐high‐frequency sounds	9
A retrospective analysis of mortality in captive Magellanic penguins (Spheniscus magellanicus) in the United States, 2008–2018	9
Monitoring great ape heart health through innovative electrocardiogram technology: Training methodologies and welfare implications	9
Evaluation of vitamin A gut loading in black soldier fly larvae (Hermetia illucens)	9
New insights into dietary management of polar bears (Ursus maritimus) and brown bears (U. arctos)	8
Don't use it? Don't lose it! Why active use is not required for stimuli, resources or “enrichments” to have welfare value	8
Increasing browse and social complexity can improve zoo elephant welfare	8
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
Natural environmental conditions and collaborative efforts provide the secret to success for sand tiger shark Carcharias taurus reproduction in aquaria	8
Increasing animal cognition research in zoos	8

Psychological and social well‐being of bony fishes in zoos and aquariums	7
The historical development of juvenile mortality and adult longevity in zoo‐kept carnivores	7
In search of the optimal enrichment program for zoo‐housed animals	7
The historical development of zoo elephant survivorship	7
Enrichment devices for green turtles (Chelonia mydas) reared in captivity programs	7
Bearing fruit: Piloting a novel judgment bias task in an American black bear	6
Sex‐specific actuarial and reproductive senescence in zoo‐housed tiger (Panthera tigris): The importance of sub‐species for conservation	6
Can colored object enrichment reduce the escape behavior of captive freshwater turtles?	6
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
Visitors' perceptions of zoo‐housed lesser anteater (Tamandua tetradactyla) welfare: Observation plays a larger role than a brief informative talk	6
The impact of in‐person and video‐recorded animal experiences on zoo visitors' cognition, affect, empathic concern, and conservation intent	6
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	6
Strategies for establishing and using genome resource banks to protect genetic diversity in conservation breeding programs	6
Investigating food preference in zoo‐housed meerkats	5
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	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
Circulating nutrients and hematological parameters in managed African elephants (Loxodonta Africana) over a 1‐year period	5
Effects of GnRH agonists on testosterone and testosterone‐stimulated parameters for contraception and aggression reduction in male lion‐tailed Macaques (Macaca silenus)	5
American alligator (Alligator mississippiensis) weight gain in captivity and implications for captive reptile body condition	5
Genetic assessment of captive red pandas (Ailurus fulgens) in American zoos to address management separation by putative subspecies	5
Body mass and growth rates in captive chimpanzees (Pan troglodytes) cared for in African wildlife sanctuaries, zoological institutions, and research facilities	5
Fecal sex steroids and reproductive behaviors in harpy eagles (Harpia harpyja)	5
Dither: A unifying model of the effects of visitor numbers on zoo animal behavior	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
Cane toad (Rhinella marina) vitamin A, vitamin E, and carotenoid kinetics	4
Daily lettuce supplements promote foraging behavior and modify the gut microbiota in captive frugivores	4
Validating the use of fecal glucocorticoid metabolite analysis to assess the adrenocortical activity of the zoo‐housed Sichuan takin (Budorcas taxicolor tibetana)	4
Furred and feathered friends: How attached are zookeepers to the animals in their care?	4
A comparison of staff presence and signage on zoo visitor behavior	4
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
Zoo animals as “proxy species” for threatened sister taxa: Defining a novel form of species surrogacy	4
Social networks research in ex situ populations: Patterns, trends, and future directions for conservation‐focused behavioral research	4
Reproductive cycles of neotropical boid snakes evaluated by ultrasound	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
The perception of felid welfare by zookeepers in North America and the implications for zoo managers	3
Review of threatened Malagasy freshwater fishes in zoos and aquaria: The necessity of an ex situ conservation network—A call for action	3
Pterygodermatites nycticebi infections in golden lion tamarins (Leontopithecus rosalia rosalia) and aye‐ayes (Daubentonia madagascariensis) from a German zoo	3
Validation of an enzyme immunoassay for measurement of fecal dehydroepiandrosterone sulfate in gibbons and siamangs	3
Sentinel behavior in captive meerkats (Suricata suricatta)	3
Reasons for unfulfilled breeding and transfer recommendations in zoos and aquariums	3
The effects of Zoo Lights on animal welfare: A case study of great Indian hornbills at Denver Zoo	3
Playful mouth‐to‐mouth interactions of belugas (Delphinapterus leucas) in managed care	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
Conservation medicine and One Health in zoos: Scope, obstacles, and unrecognized potential	3
Maximum longevity and juvenile mortality in zoo‐housed mangabeys	3
Maximizing the potential for living cell banks to contribute to global conservation priorities	3
Effects of Lupron and surgical castration on fecal androgen metabolite concentrations and intermale aggression in capybaras (Hydrochoerus hydrochaeris)	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
Melengestrol acetate contraceptive implant use in colobus monkeys (Colobus guereza): Patterns through time and differences in reproductive potential and live births	3
Colony composition and nutrient analysis of Polyrhachis dives ants, a natural prey of the Chinese pangolin (Manis pentadactyla)	3
Contextual impacts on individual and synchronous breathing rate variations in three captive odontocete groups	3
Spermatic profile of captive giant anteaters (Myrmecophaga tridactyla): Knowing more to preserve better	3
Effects of a modern exhibit design on captive tiger welfare	3
Using social network analysis to inform on the process of one‐male‐unit formation of hamadryas baboons (Papio hamadryas) in captivity	3
Weight management towards physiological and behavioral wellbeing for chimpanzees living under human care	3
Wearing the devil down: Rate of tooth wear varies between wild and captive Tasmanian devils	3