S. Mahunka szerk.: Folia Entomologica Hungarica 48. (Budapest, 1987)

Table 6. Effect of the male removal on the number of eggs laid by female of Caloglyphus and Acotyledon species under laboratory conditions at 28±2°C Species female No. Other 1-2-day 15 day expo1-2-day expo- eX

p

OSure peri- sure period sure to male ^ tQ male 0 tQ ma

,

e # „ Ovipo- Total Days Ex- days sition no. for posure feperiod of la

y

in

K period male (day) eggs zero (day) lived egg Species female No. Egg Days for Egg Days for Egg Days for No. laying No. laying No. laying Ovipo- Total Days Ex- days sition no. for posure feperiod of la

y

in

K period male (day) eggs zero (day) lived egg Caloglyphus 1 2 3 4 49 3 621 16 43 2 614 16 60 3 44 3 59 3 52 3 - 19 670 12 15-17 31 18 657 18 15-17 36 6 104 38 2-4 44 6 111 39 2-4 45 mean 52.75 2.75 48.00 3.00 617.50 16.00 Acotyledon 1 2 3 4 25 3 21 3 - 25 3 21 3 26 3 526 17 24 3 587 16 6 46 24 2-4 45 6 46 23 2-4 29 20 552 8 15-17 28 19 611 8 15-17 27 mean 25.00 3.00 21.00 3.00 556.50 16.50 Signs: ( - ) = female not exposed to male consequently, did not lay eggs, ( ) = males were introduced after 19 day to Acotyledon females and 14 days to Caloglyphus females, (*#) = males were introduced after 13 days to Caloglyphus females and 10 days to Acotyledon females. As shown from the data in Table 6, the 1-2-day exposure period to male decreased the number of eggs laid by the females of the two species. The mean number of eggs was found to be 52.75 eggs in 2.75 days for Caloglyphus and 25 eggs in 3 days for Acotyledon. The other 1-2-day exposure period to males after 14-19 days from the first period, decreased the number of eggs laid by females, but increased the longevity of the Caloglyphus females to be 44.50 days as compared with 15 days exposure period. On the other hand, the oviposition period for females of both species has an direct relation to the period of exposure to males and has an effect on the number of eggs laid by females as compared with the data in Table 2. This point has been studied by WOODRING (1969) on acarid mites, and the same results have been obtained in the agreement with the present work. The author found, that no eggs were laid when isolating virgin females for 23 days. On the other hand, when the males were introduced to 23-day old virgin females, then the females deposited an average of 114 eggs/female after 2 days. When the females mated upon emergence and isolated without males, then the egg production of these females was lower than the egg production of females with constant access to males. He suggested, that female seldom received enough sperm from a 1-2-day exposure to males to achieve the full egg-laying potential. REFERENCES CUNNINGTON, A. M. (1965): Physical limits for complete development of the grain mite, Acarus siro, in relation to its world distribution. - J. AppUEcol., 2j 296-306. EL-KIFL, A. H. (1959): The soil Arthropoda Fauna in a Farm at Giza, Egypt. - Bull. Soc. Ent. Egypt, 43: 1-39.