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Occurrence and Distribution of Perfluorooctane Sulfonate and Perfluorooctanoic Acid in the Rivers of Tokyo
Comprehensive survey of major rivers in the Tokyo metropolitan area was conducted for clarifying the emission sources of perfluorooctane sulfonate (PFOS) in Tokyo. PFOS was found at all sampling
Ecological effects of imidacloprid on arthropod communities in and around a vegetable crop
To elucidate the ecological impacts of imidacloprid [1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylideneamine] on vegetable crops and their surrounding areas, arthropods on eggplant patches
Wing dimorphism in three carabid species living in the grasslands of Mt. Omuro, Shizuoka, Japan
Wing dimorphism was found in Hemicarabus tuberculosus, Cymindis daimio Bates and Pterostichus samurai, all of which were grassland inhabitants, and there was a tendency for macropterous males to be larger in body size compared with brachypterous ones.
Beak marks on butterfly wings with special reference to Japanese black swallowtail
All the evidence suggested that an appreciable predation pressure by birds operated on BSB adult populations, and variation in the BM rate was caused by variation in avian life history and predator size.
Effect of host tree species on larval body size and pupal-chamber tunnel of Monochamus alternatus (Coleoptera: Cerambycidae)
It can be concluded that larvae of equal body mass make deeper and longer PCTs in soft xylem than in hard Xylem, as well as in the two other tree species.
Phenology of Reproduction and the Lower Development Threshold in Carabus lewisianus Breuning
A ground beetle, Carabus lewisianus Breuning, inhabiting woodlands in Izu peninsula, was studied to determine its reproductive phenology and it was found that this species reproduced by only one generation a year due to reproductive diapause.
Effects of female body size on lifetime fecundity of Monochamus urussovii (Coleoptera: Cerambycidae)
Path analysis showed that female body size, i.e., mass and elytral length, had positive effects on LF through the oviposition rate but not through the OP, indicating a higher egg productivity per ovariole in large females than in small ones.
Sex-Related Difference in the Ability of Carabus lewisianus (Coleoptera: Carabidae) to Escape from Pitfall Traps
Calibration of capture and escape rates suggested similar activity densities of the two sexes in the field, and development of more accurate measures of the number of the relevant sex on the soil surface, and of the methodology for estimating the values of parameters in theField is discussed.
Larval diapause of Monochamus urussovi and photoperiodic effects on larval development in tree bolts
To determine the larval diapause and the effect of photoperiod on development in Monochamus urussovi, larvae were reared on Abies sachalinensis and Picea jezoensis logs and bolts.