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Measurement of the degree of intransitivity in a community of sessile organisms
It is postulated that stand-off should be treated as an important competitive outcome equal in status to wins and losses and a new type of index system composed of three indices is proposed to measure the degree of intransitivity among sessile organisms at a given locality.
Effect of low dissolved oxygen concentrations on behavior and predation rates on red sea bream Pagrus major larvae by the jellyfish Aurelia aurita and by juvenile Spanish mackerel Scomberomorus
Low oxygen concentrations that are commonly observed in coastal waters of Japan during summer have the potential to increase the relative importance of jellyfish as predator of fish larvae and to change the importance of alternative trophic pathways in estuarine ecosystems.
Life history of the ghost shrimp, Callianassa Japonica Ortmann (Decapoda : Thalassinidea), on an intertidal sandflat in western Kyushu, Japan
Growth, density, survival, and reproduction were examined for the population of the ghost shrimp, Callianassa japonica Ortmann, inhabiting an intertidal sandflat in western Kyushu, Japan, based on
Benthic faunal succession in a cove organically polluted by fish farming
Abstract In the past two decades, fish farming using net cages has developed in the coastal waters throughout Japan. Such fish farming has allowed the production of large amounts of valuable fish and
Ontogeny of cholecystokinin-immunoreactive cells in the digestive tract of Atlantic halibut, Hippoglossus hippoglossus, larvae.
The appearance and distribution of cholecystokinin (CCK)-producing cells were investigated in the digestive tract of developing larvae of cultured Atlantic halibut, Hippoglossus hippoglossi, and the mechanisms controlling release of bile, pancreatic enzymes, and peristalsis during the 12 days between first feeding and the first detection of CCK-IR cells remain to be clarified.
Structural variation in the brown alga Sargassum cymosum and its effects on associated amphipod assemblages.
The findings show that monospecific algal banks are not homogeneous, and that morphological differences and interactions with other biological substrates can influence the mobile epifaunal assemblages.
Significance of larval and juvenile ecophysiology for stock enhancement of the Japanese flounder, Paralichthys olivaceus
Of particular importance are the effects of temperature on growth and development, developmental endocrinology, differences between reared and wild juveniles in physiology and behavior, and the relationship between physiology and ecology.
Recruitment Processes of Japanese Sea Bass in the Chikugo Estuary, Japan: Shift from Density-Independence to Density-Dependence During the Early Life Stages
Density-dependent regulation seems to operate on the post-immigration Japanese sea bass in the Chikugo Estuary, influencing water temperature in the upper Ariake Bay and the larval growth.
Interspecific competition among fouling organisms in Tomioka Bay, Japan
The correlation between the area coverage of a species and the number of its interactions was found to be highly sign~ficant, and the merits of time series observations in a competition study of sessile invertebrates compared with static n~ethodology are emphasized.