A5083557189- Mollusks and Parasites Studies
- Animal Ecology and Behavior Studies
- Invertebrate Taxonomy and Ecology
- Aquatic Invertebrate Ecology and Behavior
- Parasite Biology and Host Interactions
- Plant and animal studies
- Evolution and Paleontology Studies
- Study of Mite Species
- Marine Biology and Ecology Research
- Animal Behavior and Reproduction
- Paleopathology and ancient diseases
- Genetic diversity and population structure
- Marine Bivalve and Aquaculture Studies
- Fish Ecology and Management Studies
- Ecology and Vegetation Dynamics Studies
- Species Distribution and Climate Change
- Marine animal studies overview
- Insect Utilization and Effects
- Calcium Carbonate Crystallization and Inhibition
- Insect Resistance and Genetics
- Cephalopods and Marine Biology
- Silk-based biomaterials and applications
- Collembola Taxonomy and Ecology Studies
- Aquaculture Nutrition and Growth
- Advanced Thermodynamics and Statistical Mechanics
Tohoku University
2013-2024
Kyungpook National University
2018-2023
University of Sheffield
2017
Australian National University
2017
Université de Montpellier
2017
Centre National de la Recherche Scientifique
2017
University of St Andrews
2017
Utah State University
2017
University College London
2017
University of Oxford
2017
The orb-weaving spider Trichonephila clavata (L. Koch, 1878) (Araneae Nephilidae), commonly known as Joro spider, was recently introduced into North America and has been spreading in the invaded territory. Several studies have suggested potential negative impacts of this on native communities. present study focused risk-taking behavior individuals from their range. A comparison between our behavioral experiment a previous investigating an exotic population USA suggests that spiders tend to...
While terrestrial land snails have long been used for evolutionary research, a lack of high-quality genomic resources has impeded recent progress. Bradybaena in particular numerous intriguing traits that make them good model studying evolution, including shell pattern polymorphism and convergent evolution. They are also introduced invasive across the world. In this study, we present chromosome-level genome assembly Asian tramp snail similaris, utilizing 88-fold Illumina short-read sequences,...
Over the past decade, many skeletal matrix proteins that are possibly related to calcification have been reported in various calcifying animals. Molluscs among most diverse animals and some gastropods adapted terrestrial ecological niches. Although shell (SMPs) already molluscs, reports focused on marine SMPs of snails remain unclear. In addition, stylommatophoran evolved an additional unique calcified character, called a "love dart," used for mating behavior. We identified 54 snail Euhadra...
Abstract Aim Local‐scale diversity patterns are not necessarily regulated by contemporary processes, but may be the result of historical events such as habitat changes and selective extinctions that occurred in past. We test this hypothesis examining species‐richness land snail fauna on an oceanic island where forest was once destroyed subsequently recovered. Location Hahajima Island Ogasawara Islands western Pacific. Methods Species richness snails examined 217 0.25 × km squares during...
The role of natural selection in phenotypic evolution is central to evolutionary biology. Phenotypic affected by various factors other than adaptation, and recent focus has been placed on the effects phylogenetic constraints niche conservatism evolution. Here, we investigate relationship between shell morphology habitat use bradybaenid land snails genus Aegista clarify causes divergence among phylogenetically related species. results ancestral state reconstruction showed that arboreal...
Abstract Variation in the shell coiling, or chirality, of land snails provides an opportunity to investigate potential for “single-gene” speciation, because mating between individuals opposite chirality is believed not possible if mate a face-to-face position. However, evidence support single-gene speciation sparse, mostly based upon mitochondrial studies and patterns chiral variation species. Previously, we used theoretical model show that as phenotype offspring determined by maternal...
Several taxa of pulmonate land snails exhibit a conspicuous mating behaviour, the shooting so-called love darts. During mating, such snail species stab partner with mucus-coated dart. It has previously been shown that sperm donor physiologically influences recipient via mucus covering dart and thereby decreases number digested by recipient. However, generality this effect dart's is unclear, because almost all previous studies on used brown garden Cornu aspersum from family Helicidae....
Abstract To clarify the effect of niche conservatism on evolutionary history, we focused freshwater snails, which have different ecological and phylogenetic properties from previously tested taxa. We conducted a analysis using 750 lymnaeid individuals 357 sites eleven Radix species. Then, estimated ancestral distribution geographic coordinates colonization routes. In addition, statistical test distances in latitudinal longitudinal directions was performed. also modeling for two widely...
Although many studies have demonstrated that variation in male genital morphology can influence fertilization success, it remains unclear cases which mechanism(s) of sexual selection and conflict produce the morphological divergence genitalia. Distinguishing between such mechanisms requires, at very least, information on process by influences success. The length spermatophore-producing organ (SPO) stylommatophoran land snails is a case point. spermatophore may an important transfer to...
Several taxa of simultaneously hermaphroditic land snails exhibit a conspicuous mating behaviour, the so-called shooting love darts. During mating, such snail species transfer specific secretion by stabbing partner's body with dart. It has been shown that sperm donors benefit from this traumatic transfer, because secretions manipulate physiology recipient and increase donors' fertilization success. However, it is unclear whether reception dart costly to recipients. Therefore, effect sexual...
It has been theorised that sperm competition promotes the strategic usage of costly sperm. Although is thought to be an important driving force reproductive traits in simultaneous hermaphrodites as well species with separate sexes, empirical studies on ejaculation are scarce. In present study, we tested whether simultaneously hermaphroditic land snail Euhadra quaesita adjusts number donated according condition mate and pattern line previously suggested theories. We found individuals much...
We investigated a conspicuous mating behaviour of simultaneously hermaphroditic land snails, the so-called shooting love-darts, whereby snail pushes its love-dart(s) into partner. It has been shown that specific mucus coating love-dart is transferred partner’s blood and it suppresses subsequent matings in darted individual Euhadra quaesita. However, how dart still unclear. In present study, we tested hypothesis for underlying mechanisms: sperm donors reduce physical vigour partners through...
Ullung Island is an oceanic island in the Sea of Japan about 130 km distant from Korean peninsula. The biota this thought to be derived closest continental region while importance long-distance dispersal other areas for formation was considered negligible. In study, we have examined origin Island-endemic land snail Karaftohelix adamsi (Kuroda & Hukuda, 1944) using a molecular phylogenetic approach with two mitochondrial (COI and 16S rRNA) nuclear (ITS regions) DNA sequences. Our results...
While terrestrial land snails have long been subjected to evolutionary research, a lack of high-quality genomic resources has impeded recent progress. Bradybaena in particular numerous intriguing traits that make them good model for studying evolution, including shell pattern polymorphism and convergent evolution. They are also introduced invasive across the world. In this study, we present chromosome-level genome assembly Asian tramp snail similaris utilizing 88-fold Illumina short-read...
Aegista Albers, 1850 is a large genus of the land snail family Camaenidae Pilsbry, 1895 and distributed in south, southeast east Asian countries (from India Nepal to Korea Japan). Fourteen species subspecies are known from South Korea. They were described, based only on shell morphology during 1887–1943 our knowledge diversity Korean has seldom been updated since then. In this study, we provide report first molecular investigation Korea, which unmasked some overlooked group.
ABSTRACT The transfer of male accessory gland secretions is a well-investigated reproductive strategy for winning in sexual selection. An example such the conspicuous mating behaviour simultaneously hermaphroditic land snails, so-called shooting love darts, whereby snail drives dart(s) into body its partner. In Euhadra quaesita, it has been shown that specific mucus which coats dart transferred partner's haemolymph and suppresses subsequent matings darted individual. However, how rematings...
We investigated nonmarine gastropod fauna on Ulleung Island, an oceanic island in South Korea. Surveys were conducted June and September 2018, which newly recorded four terrestrial species (Paludinellassiminea cf. japonica (Pilsbry, 1901), Vallonia costata (Müller, 1774), Meghimatium bilineatum (Benson, 1842) Ambigolimax sp.) two freshwater snails (Galba truncatula 1774) Physella acuta (Draparnaud, 1805)). All records of gastropods obtained from Island so far compiled as well.