ヒメマルカツオブシムシ Anthrenus verbasci ヨウチュウ ノ センイ エノ シコウセイ

Larvaes of varied carpet beetle (Anthrenus verbasci ) are well known as insects injurious to clothes and crops, and theirfood preference have been researched well and known to inclinable toward animal fiber. Here, we widely invested theirpreference to six clothes including wool, silk, cotton, hemp, rayon and polyester from their gathering behavior. As the results,they gathered on wool most and their preferences to plant fiber were intermediate between those to animal and artificial fiber

スウシュ ヨウサイルイ オヨビ コンサイルイ ノ セイイク ト カドミウム キュウシュウ ニ オヨボス カキカラ シヨウ ノ コウカ : エンゲイヨウ バイヨウド オ モチイタ ドコウ ポット シケン

It is said that the application of alkaline material is an effective method for suppressing absorption of Cd in soil by plants.Since the main ingredient of oyster shells is calcium carbonate, it seems that the application of oyster shells is effective forthis purpose, but there are many points which are not understood about this effect. In this study, the effects of applicationsof calcium carbonate or oyster shells on the growth and absorption of Cd in several species of leafy or root vegetables wereinvestigated in pot culture experiment using commercially available gardening compost as soil with low Cd leve(l total Cd ; 0.16μg g^-1). In leafy vegetables, growth of leaves and stems was 6.2 g plant^-1, 5.6 g plant^-1 and 4.2 g plant^-1 with calcium carbonate, oystershell groups and control of Japanese mustard spinach, respectively, showing significantly higher values than that of control.However, significant difference was not observed in cabbage, potherb mustard, and crown daisy. On the other hand, in rootvegetables, growth of root was 0.93 g plant^-1 in calcium carbonate group in carrot, showing significantly higher value than 0.51-0.54 g plant^-1 of control or oyster shell groups. However, no significant difference was observed among the treatment groups inJapanese radish. With oyster shell, turnip showed significantly lower growth than that of control. In leafy vegetables, Cd concentration of leaves and stems were 0.08-0.11μg g^-1 dry matter (DM) in calcium carbonateand oyster shell groups of Japanese mustard spinach, potherb mustard, and crown daisy, showing significant lower levelsthan those of 0.13-0.14μg g^-1 DM of control. However, no significant difference was observed between the treatments withcalcium carbonate and oyster shell. In addition, no significant differences were observed in cabbage. In root vegetables, Cdconcentration were 0.28-0.32 μg g^-1 DM in calcium carbonate and oyster shell groups of Japanese radish, showing significantlylower levels than 0.48μg g^-1 DM of control. However, no significant difference was seen between the calcium carbonate andoyster shell groups. Calcium carbonate group of turnip showed 0.21μg g^-1 DM, significantly lower than 0.38μg g^-1 DM of control.Carrot showed no significant differences among the treatments

カエルルイ 7シュ ニオケル ハンショク セイタイ ト ショクセイ ノ カンケイセイ ニツイテ

Food habits of seven frog species during mating periods were examined from gastric contents and species comparison were conducted. From 1041 frogs, elementary information on their food habits such as species and sizes of prey insects were reported and species difference and sex difference were discussed. Males of Tago\u27s brown frogs (Rana tagoi ) and Shlegel\u27s green tree frogs (Rhacophorus schlegelii ) foraged nothing during mating periods as previous reports, but males of the other five species did. Males of Japanese tree frogs( Hyla japonica) and Japanese stream frogs( Buergeria buergeri) were getting to forage towards the end of their mating periods. Especially, male black spotted pond frogs( Rana nigromaculata ) seemed to prefer larger insect than expected from their environment food resources, foraged well and gained their body weight during mating periods. These species differences seem to be caused mainly from their length of mating periods and their extent of site fidelity in mating periods

アブラナカ ヨウサイルイ ハクサイ チンゲンサイ キャベツ ノ セイイク カドミウム オヨビ ヒッス ビリョウ キンゾク キュウシュウ ニ オヨボス カキガラ シヨウ ノ コウカ : Cd テンカ ドジョウ オモチイタ ドコウ ポット シケン

It is said that the application of alkaline material is an effective method of suppressing Cd absorption by plants in Cd contaminated soil. Since the main ingredient of oyster shells is calcium carbonate, it may be thought that the application of oyster shells is effective in suppressing Cd absorption by plants in soil contaminated by Cd, but there are many points which are not understood about this effect. In this study, combinations of the presence or absence of added Cd (1μgg-1) in commercial loamy soil (total Cd ; 0.38μgg-1) and application of calcium carbonate or of oyster shells were made, and the effects of applications of oyster shells on the growth of pak choi (qinggengcai), Chinese cabbage and cabbage, and on their absorption of Cd, Cu, Mn, Fe and Zn were investigated. With the soil without added Cd, the growth of 3 species of plants was less with application of oyster shells compared to application of CaCO3. The Cd concentrations in the leaf were 0.01～0.04μg DW g-1, and there was no significant difference between applications of oyster shells and CaCO3. With the soil with added Cd, the dry weight of the leaves of the 3 species was about the same with application of oyster shells as with application of calcium carbonate. The Cd concentration in the leaf of cabbage with application of oyster shells was 1.9μg DW g-1, and the Cd content was 2.5μg plant-1, indicating that it is significantly lower than with application of CaCO3. Significant differences in Cu, Zn and Mn concentrations were not seen in the leaf of the cabbage between application of oyster shells and CaCO3, but the Fe concentration was significantly lower with application of oyster shells compared to CaCO3. In addition, the Mn concentration in the leaf of the Chinese cabbage was also significantly lower. From the above findings, it was suggested that there are differences in the effects of application of oyster shells on the suppression of Cd absorption depending on the species of plant