OOIR: Observatory of International Research

Papers

(The TQCC of Zoological Science is 2. 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 2021-08-01 to 2025-08-01.)

Article	Citations
Changes in Behavior and Diel Melatonin Secretion Toward Estivation in Western Sand Lance, Ammodytes japonicus (Uranoscopiformes, Ammodytidae)	38
Comparative Observation and Analysis of Preference Behavior Based on Three Types of Taxes and Locomotor Activity in the Goldfish, Carassius auratus	27
Development of the Pronotal Explanate Margin, a Novel Evolutionary Trait in Tortoise Beetles	18
It Pays to Sit Tight: Stable Night-Time Incubation Increases Hatching Success in Urban and Forest Great Tits, Parus major	11
Ontogenetic Expressions of Sexually Dimorphic Traits in the Skeleton Shrimp Caprella scaura (Crustacea: Amphipoda)	10
Embryonic Development of the Gastrodermis in the Coral Acropora tenuis	9
Yawning and Its Temperature-Dependent Modulation in Leopard Geckos	9
Timeless Plays an Important Role in Compound Eye-Dependent Photic Entrainment of the Circadian Rhythm in the Cricket Gryllus bimaculatus	8
Topotype-Based Chromosomal Diversity among Five Species of Freshwater Armored Catfishes in the Hypostomus auroguttatus Supergroup (Actinopterygii: Siluriformes)	7
Endocrine Regulation of Aging in the Fruit Fly Drosophila melanogaster	7
Consistent Negative Correlations between Parasite Infection and Host Body Condition Across Seasons Suggest Potential Harmful Impacts of Salmincola markewitschi on Wild White-Spotted Charr, Salvelinus	7
Population Genetics of the Asian Parti-Colored Bat, Vespertilio sinensis: Insights into Seasonal Migration in the Japanese Archipelago	6
Landscape Genetic Analysis for the Japanese Wild Boar in the Early Expanding Stage in the Hokuriku Region of Japan	6
Characterization of Anthozoan-Specific Opsins from a Reef-Building Coral, Acropora tenuis, as Gq-Coupled Opsins	6
Distribution and Population Genetic Structure of the Hau Giang Medaka, Oryzias haugiangensis, Along the East Coast of the Indochinese Peninsula	5
Wnt4a Is Indispensable for Genital Duct Elongation but Not for Gonadal Sex Differentiation in the Medaka, Oryzias latipes	5
Morphological Analysis of the Olfactory System of the Pig-Nosed Turtle, Carettochelys insculpta	5
Molecular Phylogeny and Taxonomy of the Coral Genus Cyphastrea (Cnidaria, Scleractinia, Merulinidae) in Japan, With the First Records of Two Species	5
Evaluation of Nitrogen Source Uptake by the Bivalve Nuttallia olivacea Fed with 15N-Labeled Diatoms	5
The Phylogenetic Position of Branchamphinome (Annelida, Amphinomidae) with a Description of a New Species from the North Pacific Ocean	5
New Invasive Leaf Gall-Inducing Wasps Ophelimus cracens sp. nov. and Epichrysocharis burwelli on Eucalypts in Taiwan	5
Obituary	5
Volume X-Ray Micro-Computed Tomography Analysis of the Early Cephalized Central Nervous System in a Marine Flatworm, Stylochoplana pusilla	5
The Mitochondrial Phosphatase PTPMT1 is Required for the Proper Growth Rate in the Red Flour Beetle, Tribolium castaneum	5
Acetylcholine Inhibits Spontaneous Firing Activity of Terminal Nerve GnRH Neurons in Medaka	5

At-Sea Habitat Use of Rhinoceros Auklets Breeding in the Shelf Region of Eastern Hokkaido	5
Food Habits of the Japanese Dormouse in the Yatsugatake Mountains, Japan	4
A New Species of Prosadenoporus (Nemertea: Eumonostilifera) from the North-East Coast of the Bay of Bengal, India	4
Not Ancient But Neotenic: Neotenactis amateras gen. et sp. nov., the First Record of a Gonactiniid Anemone from the North Pacific (Cnidaria: Anthozoa: Enthemonae)	4
Beautiful Claws of a Tiny Water Bear: a Review and Proposal for Claw Configuration	4
Canonical and Non-Canonical Functions of Erythropoietin and Its Receptor in Mature Nucleated Erythrocytes of Western Clawed Frog, Xenopus tropicalis	4
Feeding Strategy of Wild Japanese Martens (Martes melampus) in Northern Japan	4
The Bryozoan Cauloramphus magnus (Cheilostomata: Calloporidae) in Northern Japan Includes Multiple, Co-occurring Cryptic Species	4
Genetic Analysis Reveals Dispersal Patterns of Japanese Serow in Two Different Habitats of a Mountainous Region	4
Symbiotic Algae of Acoel Species in the Seto Inland Sea and Symbiont Selectivity in the Hosts	4
A New Heteronemertean Genus with Variable Potential of Anterior Regeneration for Species Formerly Belonging to Lineus (Nemertea: Pilidiophora)	4
Epicatechin Alters the Activity of a Neuron Necessary for Long-Term Memory of Aerial Respiratory Behavior in Lymnaea stagnalis	4
Management of Nuisance Macromoths in Expressways through Academic-Industrial Collaboration: Light Trap Designed on the Basis of Moths' Preferences for Light Attributes	4
Visual Perception of Density and Density-Dependent Growth in Medaka (Oryzias latipes): A Suitable Model for Studying Density Effects in Fish	3
New Records of Azooxanthellate Scleractinian Corals (Cnidaria: Anthozoa) from Sagami Bay and Suruga Bay, Japan	3
Phenotypic Plasticity of Salamander Hatchlings in the Pre-Feeding Stage in Response to Future Prey	3
A Predator-Elicited Vocalization in Male Japanese Bush Warblers: Temporal and Spatial Singing Patterns in Relation to Presence of Conspecific Females	3
Are Amphibian Eggs a Precious Food Resource for Cynops pyrrhogaster (Amphibia: Urodela) in Spring?	3
Temperature Acclimation and Cold Tolerance in Caenorhabditis Elegans are Regulated by Multiorgan Coordination	3
The Compound Eye Regulates Free-Running Period and Stability of the Circadian Locomotor Rhythm in the Cricket Gryllus bimaculatus	3
A Taxonomic List of Sea Spiders (Arthropoda, Pycnogonida) from Japanese Waters	3
A Manually Curated Gene Model Set for an Ascidian, Ciona robusta (Ciona intestinalis Type A)	3
Three New Earthworm Species of the Genera Amynthas and Metaphire (Oligochaeta: Megascolecidae) From Leshan, China	3
Lineid Heteronemerteans (Nemertea: Pilidiophora) from Sagami Bay, Japan, with Some Proposals for the Family-Level Classification System	3
A New Polychaete, Scolelepis (Parascolelepis) Brunnea sp. nov. (Annelida: Spionidae), from Korea	3
Sperm Size Decreases With Increasing Pheomelanin Pigmentation but Not With the Amount of Glutathione in the Barn Swallow	3
Transcriptomes of Giant Sea Anemones from Okinawa as a Tool for Understanding Their Phylogeny and Symbiotic Relationships with Anemonefish	3
Association of Aquaporin 7 and 9 with Obesity and Fatty Liver in db/db Mice	3
The Growth Zones of Test Plates in Four Spatangoid Echinoid Species: Irregular Pattern	3
CRISPR-Cas9-Mediated Gene Knockout in a Non-Model Sea Urchin, Heliocidaris crassispina	3
Convergent Gene Duplication in Arctic and Antarctic Teleost Fishes	3
Contrasting Size Distributions among the Wing Spots of a Pierid Butterfly Suggest Different Selective Histories	3
Metabolic and Hormonal Changes Associated with Vitellogenesis in Salvator merianae Lizards	2
Satellite Tracking of Migration Routes of the Eastern Buzzard (Buteo japonicus) in Japan through Sakhalin	2
Sinking Down or Floating Up? Current State of Taxonomic Studies on Marine Invertebrates in Japan Inferred from the Number of New Species Published between the Years 2003 and 2020	2
Fusceulimoides kohtsukai gen. et sp. nov., a Minute Eulimid Gastropod Parasitic on the Little Brittle Star Ophiactis savignyi in Central Japan	2
Growth, Feeding, and Age of the Inshore Hagfish, Eptatretus burgeri	2
CD34 is Expressed in Endothelial Cells in Embryonic Testes and is Additionally Expressed in Non-Endothelial Cells in Postnatal Mouse Testes	2
Ancient Admixture in Freshwater Halfbeaks of the Genus Nomorhamphus in Southeast Sulawesi	2
Temporal Changes in Demography and Genetic Diversity of Oriental Storks at the Stage of Long-Term Captive Propagation and Reintroduction Initiation	2
Analysis of Genetic Structure and Genetic Diversity in Japanese Black Kite Population Using mtDNA	2
Transcriptome Analysis Reveals the Alternative Splicing Changes in the Immune-Related Genes of the Giant Panda (Ailuropoda melanoleuca), in Response to the Canine Distemper Vaccine	2
Acoustic Characteristics of Songs in a Recently Established Population of the Japanese Bush Warbler on an Oceanic Island	2
Dynamics of Laterality in the Cuttlefish Sepia recurvirostra through Interactions with Prey Prawns	2
Time-Comparator Neural Circuits of Gymnotiform Electric Fishes	2
Host Size Selection in the Ectoparasite Tachaea chinensis (Isopoda: Corallanidae) under Laboratory Conditions	2
Oxytocin/Vasopressin-Like Peptide in the Central Nervous System and Ovaries of the Mud Crab Scylla olivacea	2
Corrigenda	2
A New Species of the Blind Cave Loach Genus Protocobitis (Cypriniformes: Cobitidae), Protocobitis longicostatus sp. nov., from Guangxi, China	2
Ovarian Development and Larval Release of the Hermit Crab Clibanarius eurysternus (Hilgendorf, 1879) (Decapoda: Anomura: Diogenidae) in Okinawa, Japan	2

Occurrence of Cruzia tentaculata Larvae in the Land Snail Megalobulimus abbreviatus—Influence of Natural Parasite Load on Snail Physiology	2
Metabolic Water As a Route for Water Acquisition in Vertebrates Inhabiting Dehydrating Environments	2
Ovarian Follicle Development in Ascidians	2
Molecular Identification and Genetic Variation of Rattus Species From Oil Palm Plantations of Malaysia Based on Mitochondrial Cytochrome Oxidase Subunit I (COI) Gene Sequences	2
Circadian Rhythm and Endocrinological Control on the Swimming and Sand Burrowing Behaviors of Japanese Sand Lances Ammodytes spp. (Uranoscopiformes, Ammodytidae)	2
Teratorn and Its Related Elements – a Novel Group of Herpesviruses Widespread in Teleost Genomes	2
Medaka Terb1 Mutant Displays Defects of Synaptonemal Complex Formation and Sexual Difference in Gametogenesis	2
Photoperiodism of Diapause Induction in the Silkworm, Bombyx mori	2