Reproductive behavior and physiology of Dacus oleae: egg hatch in females mated successively with normal and gamma sterilized males and vice versa

Journal Article · Thu Jul 15 00:00:00 EDT 1976 · Ann. Entomol. Soc. Am.; (United States)

DOI:https://doi.org/10.1093/aesa/69.4.733· OSTI ID:7312058

Economopoulos, A P; Giannakakis, A; Voyadjoglou, A V

In Dacus oleae (Gmelin), a 2nd mating by an 8-krad gamma ray-sterilized male reduced egg hatch immediately to zero or near-zero in ca. 40-55 percent of individually-tested females. In another 50 percent of females, egg hatch was reduced to between 5 to 70 percent, while in fewer than 10 percent of females, egg hatch showed no change. The above was true for females reared on artificial diet for more than 50 generations and mated with same type males, as well as females reared on olives for 6 to 8 generations and mated first with same type males and 2nd with artificially-reared sterilized males. When the 2nd males were treated at 15 krad the effect on egg hatch was smaller. When the 2nd males were treated at 8 krad and had depleted their sperm, by repeated matings, they produced small or no-effect on egg hatch. When artificially-reared females mated first with a sterilized and second with a normal same type male, egg hatch increased from 0 to 5 percent to 70 to 100 percent in 50 to 55 percent of the cases. In another 43 percent of cases, egg hatch increased to levels between 5 to 70 percent. The combined findings from the 2 mating sequence types are as follows. After females mated first with normal males, egg hatch was above 80 percent in the population; a 2nd mating with 8-krad-sterilized males produced an immediate decrease of egg hatch to ca. 25 percent, decreasing slowly thereafter. When the 1st male was sterilized and the 2nd normal, egg hatch increased to ca. 70 percent, decreasing slowly thereafter.

• Research Organization: Demokritos Nuclear Research Center, Athens
• OSTI ID: 7312058
• Journal Information: Ann. Entomol. Soc. Am.; (United States), Journal Name: Ann. Entomol. Soc. Am.; (United States) Vol. 69:4; ISSN AESAA
• Country of Publication: United States
• Language: English

Related Subjects

560153* -- Radiation Effects on Animals-- Invertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
ARTHROPODS
BIOLOGICAL EFFECTS
BIOLOGICAL RADIATION EFFECTS
DACUS
DIET
EGGS
ELECTROMAGNETIC RADIATION
FEMALES
FERTILITY
FLIES
FRUIT FLIES
GAMETES
GAMMA RADIATION
GERM CELLS
HATCHING
INSECTS
INVERTEBRATES
IONIZING RADIATIONS
MALES
MATING
PHYSIOLOGY
RADIATION EFFECTS
RADIATIONS
RADIOSTERILIZATION
REPRODUCTION
SPERMATOZOA
STERILITY
STERILIZATION