コナダニ類の繁殖条件の研究 : XIII. 個別飼育のコウノホシカダニの発育に及ぼす温度および湿度の影響

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Adopting the method of individual rearing, the present study was made to observe the effect of relative humidity at temperatures under 25 and 30℃ on the life cycle of Lardoglyphus konoi. The relative humidities were regulated using saturated salt solution, K_2CO_3 (35% R. H.), NH_4NO_3 (66,65% R. H.), NaCl (76,78% R. H.), KCl (84,84% R. H.) and KNO_3 (88,92% R. H.), and water (94,96% R. H.). The diet was a mixture of dry yeast powder and fish meal powder in the same weight ratio. At 25℃ and 35% R. H., the eggs did not hatch. At 66% R. H. under 25℃ and at 65% R. H. under 30℃, the eggs developed to larvae but not to protonymph. Higher temperature and higher humidity shortened the duration of development from egg to adult. In this study, the maximum duration of development from egg to adult was 11.5±0.3 days in females and 11.4±0.4 days in males under the conditions of 25℃ and 76% R. H.; the minimum was 6.5±0.2 days in females and 6.1±0.2 days in males under the conditions of 30℃ and 96% R. H. The appearance rate of hypopus was increased at higher temperature and higher relative humidity. The maximum rate was at 37.3% at 30℃ and 96% R. H. Under the same rearing conditions duration of the protonymphal stage of the individuals which became hypopus was about one day longer than that of the individuals which became adult. The total number of eggs laid per female was larger at 25℃ than 30℃, and at higher relative humidity. The largest number of eggs laid by one female, 334.3±42.2,was at 25℃ and 94% R. H.
日本衛生動物学会の論文
1992-09-15

コナダニ類の繁殖条件の研究 : XIII. 個別飼育のコウノホシカダニの発育に及ぼす温度および湿度の影響

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