caa a22 4500 397546653 CHVBK 20180308164740.0 cr unu---uuuuu 161202e19960301xx s 000 0 eng 10.1093/aesa/89.2.238 doi (NATIONALLICENCE)oxford-10.1093/aesa/89.2.238 Kaufmann Tohko P.O. Box 3880, Nakuru, Kenya, East Africa. Dynamics of Sperm Transfer, Mixing, and Fertilization in Cryptolaemus montrouzieri (Coleoptera: Coccinellidae) in Kenya [Elektronische Daten] [Tohko Kaufmann] Two specialized structures affect sperm transfer, sperm mixing, and fertilization in mealybug destroyer, Cryptolaemus montrouzieri Mulsant. One is a large muscle block attached to the ejaculatory duct sheath of the male beetle. It propels sperm into the spermatophore, driving it into the vagina. The muscular action further forces the sperm into the spermatheca, simultaneously inflating an air pump of the spermatheca. The spermatheca receives sperm from 3 to 4 males at a time, and the sperm are mixed rapidly and thoroughly by the air pump before fertilization. The other structure is a bell-shaped sac that surrounds the base of the seminal duct. It helps connect the spermatophore and the seminal duct during sperm transfer; it also receives mixed sperm from the spermatheca and leads them to the micropyles of the egg. Only 1 egg is fertilized at a time. Frequent and multiple matings during oviposition keep C. montrouzieri genetically diversified. © 1996 Entomological Society of America Ecology and Population Biology nationallicence mealybug destroyer nationallicence muscle block nationallicence spermatophore nationallicence fertilization sac nationallicence sperm mixing nationallicence Annals of the Entomological Society of America Oxford University Press 89/2(1996-03-01), 238-242 0013-8746 89:2<238 1996 89 aesa https://doi.org/10.1093/aesa/89.2.238 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/aesa/89.2.238 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Kaufmann Tohko P.O. Box 3880, Nakuru, Kenya, East Africa NATIONALLICENCE 773 0- Annals of the Entomological Society of America Oxford University Press 89/2(1996-03-01), 238-242 0013-8746 89:2<238 1996 89 aesa Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford