OOIR: Observatory of International Research

Papers

(The median citation count of Zoological Science is 1. 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 2021-04-01 to 2025-04-01.)

Article	Citations
The Bryozoan Cauloramphus magnus (Cheilostomata: Calloporidae) in Northern Japan Includes Multiple, Co-occurring Cryptic Species	34
Analyses of mRNA Expression Levels of Pituitary Hormones, Their Hypothalamic Regulating Factors, and Receptors Involved in Metamorphosis with Special Reference to the Summer and Winter Seasons	24
Possible Role of Polarized Light Information in Spatial Recognition in the Cricket Gryllus bimaculatus	14
Temporal Changes in Demography and Genetic Diversity of Oriental Storks at the Stage of Long-Term Captive Propagation and Reintroduction Initiation	9
Populations of the Intertidal Crab Macrophthalmus banzai are Not Grouped by Latitude: Taiwan Population is Genetically Closer to the Populations in the Japanese Mainland Than the Ryukyu Islands	8
Management of Nuisance Macromoths in Expressways through Academic-Industrial Collaboration: Light Trap Designed on the Basis of Moths' Preferences for Light Attributes	7
Analysis of Genetic Structure and Genetic Diversity in Japanese Black Kite Population Using mtDNA	7
Differences of Extracellular Cues and Ca2+ Permeable Channels in the Signaling Pathways for Inducing Amphibian Sperm Motility	7
Not Ancient But Neotenic: Neotenactis amateras gen. et sp. nov., the First Record of a Gonactiniid Anemone from the North Pacific (Cnidaria: Anthozoa: Enthemonae)	7
Development of Genetic Markers for Sex and Individual Identification of the Japanese Giant Flying Squirrel (Petaurista leucogenys) by an Efficient Method Using High-Throughput DNA Sequencing	5
Development of the Pronotal Explanate Margin, a Novel Evolutionary Trait in Tortoise Beetles	5
Inhibitory Effect on RT-PCR and Restriction Enzyme Activity by Ommochrome and Its Mechanism	5
Larval Body Shape and Eye Size Variation in Japanese Toads (Anura: Bufonidae: Bufo): An Ecological Implication for Lentic and Lotic Habitats	5
Topotype-Based Chromosomal Diversity among Five Species of Freshwater Armored Catfishes in the Hypostomus auroguttatus Supergroup (Actinopterygii: Siluriformes)	5
A New Species of the Genus Pseudocrangonyx (Crustacea: Amphipoda: Pseudocrangonyctidae) from Yonaguni Island, Southwestern Japan, and Historical Biogeographic Insights of Pseudocrangonyctids	5
New Species of Lower-Shelf to Upper-Slope Ctenostome Bryozoans from Pacific Japan, with a Family Range Extension	4
It Pays to Sit Tight: Stable Night-Time Incubation Increases Hatching Success in Urban and Forest Great Tits, Parus major	4
Expression of mRNAs Encoding Hypothalamic Small Proteins, Neurosecretory Protein GL and Neurosecretory Protein GM, in the Japanese Quail, Coturnix japonica	4
Description of a New Brooding Species of Ophiodelos (Echinodermata: Ophiuroidea) from Japan	4
Ontogenetic Expressions of Sexually Dimorphic Traits in the Skeleton Shrimp Caprella scaura (Crustacea: Amphipoda)	4
Epicatechin Alters the Activity of a Neuron Necessary for Long-Term Memory of Aerial Respiratory Behavior in Lymnaea stagnalis	4
Distribution and Genetic Divergence of Deep-Sea Hydrothermal Vent Copepods (Dirivultidae: Siphonostomatoida: Copepoda) in the Northwestern Pacific	4
A New Species of the Blind Cave Loach Genus Protocobitis (Cypriniformes: Cobitidae), Protocobitis longicostatus sp. nov., from Guangxi, China	4
Changes in Behavior and Diel Melatonin Secretion Toward Estivation in Western Sand Lance, Ammodytes japonicus (Uranoscopiformes, Ammodytidae)	4
Yawning and Its Temperature-Dependent Modulation in Leopard Geckos	4

Resting Cyst Formation as a Strategy for Environmental Adaptation in Colpodid Ciliates	4
Endocrine Regulation of Aging in the Fruit Fly Drosophila melanogaster	4
Additional Taxonomic Information for Lamproglena hemprichii (Copepoda: Lernaeidae) Based on Scanning Electron Microscopy and Genetic Characterization, Alongside Some Aspects of Its Ecology	3
Comparative Observation and Analysis of Preference Behavior Based on Three Types of Taxes and Locomotor Activity in the Goldfish, Carassius auratus	3
Embryonic Development of the Gastrodermis in the Coral Acropora tenuis	3
Genetic Analysis Reveals Dispersal Patterns of Japanese Serow in Two Different Habitats of a Mountainous Region	3
Decreased Diversity and Abundance of Marine Invertebrates at CO2 Seeps in Warm-Temperate Japan	3
Ovarian Development and Larval Release of the Hermit Crab Clibanarius eurysternus (Hilgendorf, 1879) (Decapoda: Anomura: Diogenidae) in Okinawa, Japan	3
Ancient Admixture in Freshwater Halfbeaks of the Genus Nomorhamphus in Southeast Sulawesi	3
A Taxonomic List of Sea Spiders (Arthropoda, Pycnogonida) from Japanese Waters	3
Transcriptomes of Giant Sea Anemones from Okinawa as a Tool for Understanding Their Phylogeny and Symbiotic Relationships with Anemonefish	3
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	3
Phylogenetics and Population Genetics of the Asian House Shrew, Suncus murinus–S. montanus Species Complex, Inferred From Whole-Genome and Mitochondrial DNA Sequences, with Special Reference to the Ry	3
Landscape Genetic Analysis for the Japanese Wild Boar in the Early Expanding Stage in the Hokuriku Region of Japan	3
Teratorn and Its Related Elements – a Novel Group of Herpesviruses Widespread in Teleost Genomes	3
Effect of Natural Seasonal Changes in Photoperiod and Temperature on Immune Function in Striped Hamsters	3
Programmed Scale Detachment in the Wing of the Pellucid Hawk Moth, Cephonodes hylas: Novel Scale Morphology, Scale Detachment Mechanism, and Wing Transparency	3
Photoperiodism of Diapause Induction in the Silkworm, Bombyx mori	3
Timeless Plays an Important Role in Compound Eye-Dependent Photic Entrainment of the Circadian Rhythm in the Cricket Gryllus bimaculatus	3
Cinusa nippon n. sp. (Isopoda: Cymothoidae) Parasitic in the Buccal Cavity of Coastal Puffers (Tetraodontiformes: Tetraodontidae) from Japan, with the First Specimen-Based Record of the Isopod Genus f	3
Molecular Characterization and Tissue Distribution of Calcineurin Regulatory B Subunit during the Prevention of Diapause in the Silkworm, Bombyx mori	3
A Relaxin-Like Gonad-Stimulating Peptide Appears in the Early Development of the Starfish Patiria pectinifera	3
Diversity of Androgens; Comparison of Their Significance and Characteristics in Vertebrate Species	2
Parasitism-Induced Intersexuality in a Sexually Dimorphic Varunid Crab, Ptychognathus ishii (Decapoda: Varunidae)	2
Identification and Physiological Assays of Crustacean Hyperglycemic Hormones in the Japanese Spiny Lobster, Panulirus japonicus	2
Guiding Light: Mechanisms and Adjustments of Environmental Light Interpretation with Insights from Platynereis dumerilii and Other Selected Examples	2
Recent Advances in Endocrine and Neuroendocrine Systems	2
Corrigenda	2
Dynamics of Spermatogenesis and Change in Testicular Morphology under ‘Mating’ and ‘Non-Mating’ Conditions in Medaka (Oryzias latipes)	2
Phylogeography of Parnassius citrinarius Based on Mitochondrial DNA Reveals Large Differences in Genetic Structure between the Eastern and Western Japan	2
Developmental Staging of Sexual Egg Formation in Daphnia pulex: Unmated Females Resorb Meiotic Oocytes to Resist Starvation	2
Neural Control of Sexual Behavior in Fish	2
Effects of Water Temperature on the Body Color and Expression of the Genes Related to Body Color Regulation in the Goldfish	2
Comparative Study of Gamma Radiation Tolerance between Desiccation-Sensitive and Desiccation-Tolerant Tardigrades	2
A CatSper-Uninvolved Mechanism to Induce Forward Sperm Motility in the Internal Fertilization	2
Evaluation of Visual and Tactile Perception by Plain-Body Octopus (Callistoctopus aspilosomatis) of Prey-Like Objects	2
In Vitro Phagocytosis of Different Dinoflagellate Species by Coral Cells	2
Medaka Terb1 Mutant Displays Defects of Synaptonemal Complex Formation and Sexual Difference in Gametogenesis	2
Characterization of Anthozoan-Specific Opsins from a Reef-Building Coral, Acropora tenuis, as Gq-Coupled Opsins	2
Cold Tolerance Variation in Local Populations of Hemidactylus frenatus: Acclimation or Adaptation?	2
JAMBIO and Its Coastal Organism Joint Surveys: Network of Marine Stations Explores Japanese Coastal Biota	2
Host Size Selection in the Ectoparasite Tachaea chinensis (Isopoda: Corallanidae) under Laboratory Conditions	2
Morphological Study of Left–Right Head Asymmetry in Doubledaya bucculenta (Coleoptera: Erotylidae: Languriinae)	2
A Manually Curated Gene Model Set for an Ascidian, Ciona robusta (Ciona intestinalis Type A)	2
Effects of Acclimation to Diluted Seawater on Metabolic and Growth Parameters of Underyearling Masu Salmon (Oncorhynchus masou)	2
CD34 is Expressed in Endothelial Cells in Embryonic Testes and is Additionally Expressed in Non-Endothelial Cells in Postnatal Mouse Testes	2
A New Species of Pseudostrandesia Savatenalinton and Martens, 2009 (Ostracoda, Crustacea) Collected from Two Pet Shops in Central Japan: an Alien Species?	2
Genetic Disruption of cyp21a2 Leads to Systemic Glucocorticoid Deficiency and Tissues Hyperplasia in the Teleost Fish Medaka (Oryzias latipes)	2
Expression Level Changes in Serotonin Transporter are Associated with Food Deprivation in the Pond Snail Lymnaea stagnalis	2
An Indirect Cost of Male-Male Aggression Arising from Female Response	2

New Records of Azooxanthellate Scleractinian Corals (Cnidaria: Anthozoa) from Sagami Bay and Suruga Bay, Japan	2
Photoperiodic Response in the Pars Intercerebralis Neurons, Including Plast-MIP Neurons, in the Brown-Winged Green Bug, Plautia stali	2
Histological and Molecular Characterization of the Inferior Olivary Nucleus and Climbing Fibers in the Goldfish, Carassius auratus	1
Ceratosomicola oki n. sp., a New Species of Copepod (Cyclopoida: Splanchnotrophidae) Parasitic on the Chromodoridid Nudibranch Glossodoris misakinosibogae Baba, 1988 Off the Oki Islands, Japan, with M	1
First Record of Elasmobranch Hosts for the Gnathiid Isopod Crustacean Thaumastognathia: Description of Thaumastognathia bicorniger sp. nov.	1
The Growth Zones of Test Plates in Four Spatangoid Echinoid Species: Irregular Pattern	1
Fbxl4 Regulates the Photic Entrainment of Circadian Locomotor Rhythms in the Cricket Gryllus bimaculatus	1
To Mob or Not to Mob: Habitat and Time of Day Influence in Mobbing Behavior in the Azure-Winged Magpie (Cyanopica cookii)	1
Observations on Predation in Paranthura japonica Richardson, 1909 (Isopoda: Cymothoida: Paranthuridae)	1
Cloning and Expression Analysis of TGF-β Type I Receptor Gene in Hyriopsis cumingii	1
Convergent Gene Duplication in Arctic and Antarctic Teleost Fishes	1
Mate Discrimination Using Chemical Cues by Male Guppies	1
Use of Visual Information by Ant Species Occurring in Similar Urban Anthropogenic Environments	1
Contents	1
Neuroendocrinology of Reproduction and Social Behaviors in Reptiles: Advances Made in the Last Decade	1
Current Genetic Status of Nagaremon-charr, a Threatened Morphotype of Salvelinus leucomaenis in the Ane River, Lake Biwa System, Central Japan, With Comments on Its Conservation	1
Environmentally Dependent Alteration of Reproductive Strategies and Juvenile Hormone Signaling in Daphnia (Crustacea: Cladocera)	1
Constant Light, Pdp1, and Tim Exert Influence on Free-Running Period of Locomotor Rhythms in the Cricket Gryllus bimaculatus	1
Evolution of Temperature Receptors and Their Roles in Sensory Diversification and Adaptation	1
Immunohistochemical Characterization of the Development of Long Photoreceptor Cells in the Lamprey Retina	1
Phenotypic Plasticity of Salamander Hatchlings in the Pre-Feeding Stage in Response to Future Prey	1
Sex-Inducing Activities of the Land Planarian Bipalium nobile Extract Fractions, Obtained Using Bioassay-Guided Fractionation, in the Freshwater Planarian Dugesia ryukyuensis	1
Dive Deep: Bioenergetic Adaptation of Deep-Sea Animals	1
Three Free-Living Marine Nematodes from Sagami Bay, Japan, with a Description of Wiesoncholaimus jambio sp. nov. (Nematoda: Oncholaimidae)	1
Functional Analysis of a Juvenile Hormone Inducible Transcription Factor, Krüppel homolog 1, in the Bean Bug, Riptortus pedestris	1
Tima nigroannulata (Cnidaria: Hydrozoa: Eirenidae), a New Species of Hydrozoan from Japan	1
Pulmonary Structure and Function in Marine Snakes	1
Morphological and Molecular Evidence of an Intergeneric Host-Range in Clavisodalis sentifer (Crustacea: Copepoda: Taeniacanthidae) Associated with Diadematid Sea Urchins from the Western Pacific	1
Visual Perception of Density and Density-Dependent Growth in Medaka (Oryzias latipes): A Suitable Model for Studying Density Effects in Fish	1
Evaluation of Nitrogen Source Uptake by the Bivalve Nuttallia olivacea Fed with 15N-Labeled Diatoms	1
Transcriptome Analysis of the Kidney of Obscure Puffer, Takifugu obscurus, Challenged with Poly(I:C)	1
Description of a New Hamatipeda Species, with an 18S Molecular Phylogeny (Crustacea: Tanaidacea: Typhlotanaidae)	1
Phylogeographic History of Endangered Hokuriku Salamander, Hynobius takedai (Amphibia: Caudata)	1
Creation of Knock-In Alleles of Insulin Receptor Tagged by Fluorescent Proteins mCherry or EYFP in Fruit Fly Drosophila melanogaster	1
Temperature Acclimation and Cold Tolerance in Caenorhabditis Elegans are Regulated by Multiorgan Coordination	1
Association of Aquaporin 7 and 9 with Obesity and Fatty Liver in db/db Mice	1
CRISPR-Cas9-Mediated Gene Knockout in a Non-Model Sea Urchin, Heliocidaris crassispina	1
Variation in Ventral Coloration Pattern and Aposematism in Tropical Warty Newts	1
Segment-Dependent Gene Expression Profiling of the Cartilaginous Fish Nephron Using Laser Microdissection for Functional Characterization of Nephron at Segment Levels	1
A New Species of Bisexual Milnesium (Eutardigrada: Apochela) Having Aberrant Claws from Innhovde, Dronning Maud Land, East Antarctica	1
The Nematode Pristionchus pacificus Requires the Gβ and Gγ Proteins for Light Adaptation But Not For Light Avoidance	1
Nutritional Adaptation and Microbes: Insights From Drosophila	1
Phylogeny of g6pc1 Genes and Their Functional Divergence among Sarcopterygian Vertebrates: Implications for Thermoregulatory Strategies	1
Distribution and Population Genetic Structure of the Hau Giang Medaka, Oryzias haugiangensis, Along the East Coast of the Indochinese Peninsula	1
Reproductive Ability of Hybrids between Japanese Pond Turtle (Mauremys japonica) and Reeves' Pond Turtle (Mauremys reevesii)	1
Effects of Calyculin a on the Motility and Protein Phosphorylation in Frozen-Thawed Bull Spermatozoa	1
High-Precision Calorimetry-Based Analysis of Pupal-Pharate Adult Development in Drosophila melanogaster	1
The Mitochondrial Phosphatase PTPMT1 is Required for the Proper Growth Rate in the Red Flour Beetle, Tribolium castaneum	1
Discovery and Genetic Characterization of a Vestimentiferan, Lamellibrachia satsuma, from the Submarine Volcano Omuro Dashi in the Izu-Ogasawara Arc	1
Systematics and Distributions of Upper Bathyal Species in Bathyancistrolepis, a Deep-Sea Whelk Genus Endemic to the Northwest Pacific (Gastropoda: Buccinidae)	1
Microfocus X-Ray Computed Tomography of Paraplanocera oligoglena (Platyhelminthes: Polycladida) with an Evaluation of Histological Sections After Scanning	1
Histological Observation of Helmet Development in the Treehopper Poppea capricornis (Insecta: Hemiptera: Membracidae)	1
Lunar Age-Dependent Oscillations in Expression of the Genes for Kisspeptin, GnIH, and Their Receptors in the Grass Puffer during the Spawning Season	1
Volume X-Ray Micro-Computed Tomography Analysis of the Early Cephalized Central Nervous System in a Marine Flatworm, Stylochoplana pusilla	1
Environmental Adaptation in Animals	1
First Complete Mitochondrial Genome of a Tanaidacean Crustacean (Arctotanais alascensis)	1
Three New Earthworm Species of the Genera Amynthas and Metaphire (Oligochaeta: Megascolecidae) From Leshan, China	1
Wnt4a Is Indispensable for Genital Duct Elongation but Not for Gonadal Sex Differentiation in the Medaka, Oryzias latipes	1