Almost complete sterility may be induced by imperfect fertilization. Resulting male offspring very rarely produce daughters which are almost always sterile. Complete sterility of males due to lack of external genitalia exists in one strain, which is reproduced from sisters and fertile brothers. A previously fertile strain mutated so that females lay inviable eggs. Rarely an egg will hatch and from the resulting insect the strain is perpetuated. Males of this strain are of normal fertility.
Proceedings of the Iowa Academy of Science
©1924 Iowa Academy of Science, Inc.
Whiting, P. W.
"Three Different Types of Genetic Sterility in the Parasitic Wasp, Habrobracon,"
Proceedings of the Iowa Academy of Science, 31(1), 406-406.
Available at: https://scholarworks.uni.edu/pias/vol31/iss1/141