EFFECT OF MALE TO FEMALE RATIO ON FECUNDITY AND FERTILITY OF HIPPODAMIAVARIEGATA (COL.: COCCINELLIDAE)

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ALDAGHI MAHSA; ALLAHYARI HOSSEIN; TALAYI HASANLOUYI REZA

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Journal: BIOLOGICAL CONTROL OF PESTS AND PLANT DISEASES Year:2014 | Volume:2 | Issue:2 Page(s): 123-127

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Title

EFFECT OF MALE TO FEMALE RATIO ON FECUNDITY AND FERTILITY OF HIPPODAMIAVARIEGATA (COL.: COCCINELLIDAE)

Author(s)

ALDAGHI MAHSA | ALLAHYARI HOSSEIN | TALAYI HASANLOUYI REZA | Issue Writer Certificate

Keywords

BIOLOGICAL CONTROLQ1

HIPPODAMIAVARIEGATAQ2

MALE ABUNDANCEQ2

MASS REARINGQ2

Abstract

Many of i nsects have re-mating behavoiur during their reproductive period. The re-mating phenomenons have been observed in many ladybirds, too. In current study, the change of proportion of male to female (sex ratio) was used in order to changing of possibility and times of re-mating in HIPPODAMIAVARIEGATA. In previous studies it has been indicated that males make up about 50% of this predator’s population. To examine change in sex ratio, one day old and virgin females and males have been used. Treatments included: 10 females without male, 10 females with the presence of 2 males, 10 females with the presence of 4 males, 10 females with the presence of 6 m ales, 10 females with the presence of 8 m ales and 10 pairs of females and m ales together. Number of eggs was counted and recorded for 20 days. Then, effect of the male: female ratio on egg production and hatching rate was evaluated. The re sults of this research showed that there wa s no significant difference between treatments about egg production. In other words, decreasing the ratio of male, female havenot got any negative effect on female egg production. Evaluating the fertility in different treatments showed that, despite popular perception, the presence of 10 males with 10 females not only did not increase the amount of fertility but also decreased it. This illustrates that incidence of re-mating causes declining female’s fitness. This finding has been discussed from practical point of view.

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APA: Copy

ALDAGHI, MAHSA, ALLAHYARI, HOSSEIN, & TALAYI HASANLOUYI, REZA. (2014). EFFECT OF MALE TO FEMALE RATIO ON FECUNDITY AND FERTILITY OF HIPPODAMIAVARIEGATA (COL.: COCCINELLIDAE). BIOLOGICAL CONTROL OF PESTS AND PLANT DISEASES, 2(2), 123-127. SID. https://sid.ir/paper/261434/en

Vancouver: Copy

ALDAGHI MAHSA, ALLAHYARI HOSSEIN, TALAYI HASANLOUYI REZA. EFFECT OF MALE TO FEMALE RATIO ON FECUNDITY AND FERTILITY OF HIPPODAMIAVARIEGATA (COL.: COCCINELLIDAE). BIOLOGICAL CONTROL OF PESTS AND PLANT DISEASES[Internet]. 2014;2(2):123-127. Available from: https://sid.ir/paper/261434/en

IEEE: Copy

MAHSA ALDAGHI, HOSSEIN ALLAHYARI, and REZA TALAYI HASANLOUYI, “EFFECT OF MALE TO FEMALE RATIO ON FECUNDITY AND FERTILITY OF HIPPODAMIAVARIEGATA (COL.: COCCINELLIDAE),” BIOLOGICAL CONTROL OF PESTS AND PLANT DISEASES, vol. 2, no. 2, pp. 123–127, 2014, [Online]. Available: https://sid.ir/paper/261434/en

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