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 2022-08-01 to 2026-08-01.)

Article	Citations
Case study: Visual barriers reduce pacing in captive tigers	35
The Use of Gonadotropin Releasing Hormone to Manage Intraspecific Agonism in a Coalition of Male Lions (Panthera leo)	26
The Provision of Browse and Its Impacts on the Health and Welfare of Animals at the Zoo: A Review	24
Ambassador Animals Do Not Have a Clear Effect on Visitor Conservation Knowledge and Attitudes Toward Exotic Pets at a Zoo Exhibit	17
A cross‐over dietary intervention in captive cheetahs (Acinonyx jubatus): Investigating the effects of glycine supplementation on blood parameters	17
Impacts of the COVID‐19 pandemic on population management in AZA	16
An evaluation of DNA sample source and molecular markers to determine gender in the short‐beaked echidna (Tachyglossus aculeatus)	13
Anurans or Mice: What is the Best Food Item for Young and Adults of Bothrops jararacussu (Lacerda, 1884) in Captivity?	13
The Welfare and Educational Impacts of Encounter Experiences and Displays on Zoo‐Housed Red Panda ( Ailurus fulgens )	13
Exploration of cultural norms and behavioural beliefs about zoo animal behaviour, welfare, ethics and husbandry practices in a sample of the international zoo community	12
Diving Into Diversity: Considering Intra‐Specific Variation in Water Immersion Activity of Aquarium‐Housed Magellanic Penguins	12
Sex identification of birds in Taipei Zoo	11
A novel protocol for three‐dimensional mapping of sand tiger shark (Carcharias taurus) enclosure use in aquaria: Implications for management	10
Effects of Substrate Provision and Associated Cleaning Practices on Welfare Indicators in Eastern Long‐Nosed Vipers ( Vipera ammodytes meridionalis ) Dur	10
Comparing the effectiveness of flagship species in zoo interpretation videos involving dialogic‐based narrative approaches	9
Ants (Hymenoptera: Formicidae) and termites (Blattodea: Termitoidae) in the diet of wild white‐bellied pangolin (Phataginus tricuspis) in forest‐savanna habitats of Cameroon	8
Strategies for establishing and using genome resource banks to protect genetic diversity in conservation breeding programs	8
What is the role of the studbook in zoo and aquarium research?	8
The Zone Overlap Index: A new measure of shared resource use in the zoo	8
ManyZoos: A New Collaborative Approach to Multi‐Institution Research in Zoos	7
Free‐ranging Southern anteater mating behavior: Contribution to Tamandua natural history	7
Flock size and structure influence reproductive success in four species of flamingo in 540 captive populations worldwide	7
Assessment of Vitamin D Status in Great Apes in Human Care	7
Shrimp Pleopods as a Novel Feed Item in the Diet of Adult Seahorses	6
Variable digestibility of captive northern greater galagos (Otolemur garnettii) fed experimental “frugivorous” and “invertebrate” diets	6

Effect of four eggshell repair materials on weight loss during incubation of white leghorn chicken eggs	6
Factors affecting the behavior of captive white rhinoceros (Ceratotherium simum) and the accuracy of ad‐hoc keeper data	6
Sex determination by ultrasonography prior to artificial breeding of the pufferfish Arothron manilensis (Tetraodontiformes, Tetraodontidae)	6
UV irradiance effects on komodo dragon (Varanus komodoensis) vitamin D3, egg production, and behavior: A case study	6
Impact of Animal Encounter Modality and Species on Zoo Visitor Knowledge, Concern, and Conservation Intent	6
Body Mass Records of Zoo‐Managed Rhinoceros ( Ceratotherium simum, Diceros bicornis, Rhinoceros unicornis ) as Compared to Field Data of Free‐Ranging Spe	6
Issue Information	6
Words Matter: Empathetic Interpretation Can Increase Children's Positive Perceptions of a Disliked Insect	6
Dusky Gopher Frog (Lithobates sevosus) Repatriation at a Reintroduction Site Through Zoo‐Led Captive‐Release Efforts	5
Effects of Simulated Dusk and Dawn on Activity and Feeding of Puerto Rican Crested Toads ( Peltophryne lemur ) in Captivity	5
	5
Managing Musth for Welfare in a Geriatric Asian Elephant: Behavioral and Hormonal Effects of an Anti‐GnRH Immunotherapeutic	5
Trends in Reptile Holdings Across UK Zoos: Identification of the Factors Responsible for Declining Numbers of Venomous Snake	5
Ultrasonographic and radiographic evaluation of gestation in golden lanceheads (Bothrops insularis) in ex situ breeding programs	5
Retrospective Analysis of Hatchling Success From Chelonian Eggs at a North Carolina Wildlife Clinic 2010 to 2023	5
Serial ultrasonographic measurements of fetal parameters over three successive pregnancies in a captive Eastern black‐and‐white colobus monkey (Colobus guereza)	5
Dietary and Ranging Behavior of Semi‐Free Ranging Lemur catta and Varecia rubra at Myakka City Lemur Reser	5
Tightening the Sphincter on Faecal Sample Anonymity: The Case of the Weddell Seal ( Leptonychotes weddellii )	5
Behavior First: A Toolkit for Meeting the Behavioral Needs of Animals in Zoos and Aquariums	5
Single or repeated immunization against GnRH fails to completely abolish spermatogenesis in dwarf bucks (Capra hircus)	4
Institutional networks in cooperative population management: Exploring patterns in transfer fulfillment	4
Apparent Digestibility of the Diet Provided to Crab‐Eating Fox ( Cerdocyon thous ) Kept Under Human Care [Diet Provided to Crab‐Eating Fox]	4
Issue Information	4
A comparison of staff presence and signage on zoo visitor behavior	4
Management of intraspecific aggression in two bull giraffes (Giraffa camelopardalis ssp. rothschildi)	4
Growth Rates and Sexual Size Dimorphism in Bothrops jararacussu in Captivity (Viperidae, Crotalinae)	4
Connection to Nature in Zoos: A Systematic Review of Empirical Research	4
Do African Savanna Elephants (Loxodonta africana) Show Interspecific Social Long‐Term Memory for Their Zoo Keepers?	4
Noninvasive Assessment of Stress and Reproduction in Captive Lions (Panthera leo) Using Fecal Hormone Analysis	4
Never be mute about bird welfare: Swanning around with environmental enrichment	4
Behavioral development of a captive polar bear (Ursus maritimus) cub in the maternal den	4
Optimal Weight Loss of Pink Pigeon (Nesoenas mayeri) Eggs During Incubation	4
A Comparison of Milk Macronutrient Composition From Domestic and Exotic Species Classified in the Order Perissodactyla	4
Issue Information	4
Predictors of testosterone in zoo‐managed male African elephants (Loxodonta Africana)	3
Insights Into the Reproduction and Maturity of the Spinetail Devil Ray (Mobula mobular)	3
Seasonality, Social Structure and Age Predict Conspecific Aggression in Captive Breeding Southern Ground‐Hornbills (Bucorvus leadbeateri)	3
Effects of Density and Food Availability on the Growth of Captive‐Reared Eastern Hellbenders	3
Wild origins and mitochondrial genetic diversity of Angolan Colobus monkeys (Colobus angolensis) in AZA‐accredited zoos and its implications for ex situ population management	3
Comparison between concentration and type of intracellular cryoprotectants and the presence of sucrose for cryobanks of somatic cells derived from captive Pumas	3
Positive Correlation Between Fecal Estrogen and Glucocorticoid Metabolites in a Female Clouded Leopard	3
Factors affecting captive female giraffe stress response: Male presence, small enclosure, and low temperature	3
Residual tissue magnesium concentration in jellyfish (Aurelia aurita and Cassiopea andromeda) following magnesium chloride euthanasia	3
Liver and Let Die? A Retrospective Analysis of Secretarybird Mortality in European Zoos	3
Age‐Related Differences in Gut Microbiome and Fecal Metabolome of Captive African Penguins (Spheniscus demersus)	3
Investigating the Welfare of Zoo‐Housed Cryptoprocta ferox: Behavioral Observations and Hormonal Profiling	3
The historical development of zoo elephant survivorship	3
UVB‐emitting LEDs for reptile lighting: Identifying the risks of nonsolar UV spectra	3
Husbandry conditions of spotted ratfish (Hydrolagus colliei, Chimaeriformes) in aquaria for successful embryonic development and long‐term survival of juveniles	3
Increasing Intermammary Distance During Estrus in Bottlenose Dolphins ( Tursiops truncatus )	3

Behavioral Responses of Zoo Animals During a Total Solar Eclipse in the Absence of Visitors	3
Genetic diversity and relatedness in captive collared peccariesDicotyles tajacu(Linnaeus, 1758) (Cetartiodactyla: Tayassuidae) estimated by microsatellite genotyping using high‐throughput seque	3
Effectiveness of Deslorelin Implants in Suppressing Egg Production in a White‐Naped Crane ( Antigone vipio ): A Case Study	3
Effects of Random Feeding Schedule on Pacing in Asiatic Lions (Panthera leo persicus)	3
Issue Information	3