Limits...
Mass rearing history and irradiation affect mating performance of the male fruit fly, Anastrepha obliqua.

Rull J, Encarnación N, Birke A - J. Insect Sci. (2012)

Bottom Line: Irradiated males mated less frequently with wild females than wild males, and irradiated females appeared to be less able to reject courting males of both origins.High levels of fertility for untreated laboratory females crossed with males irradiated at different doses may reflect problems in mass rearing affecting homogeneity of pupal age before irradiation, and possibly masked a dose effect.Proposed remedial measures to improve male mating performance are discussed.

View Article: PubMed Central - PubMed

Affiliation: Instituto de Ecología, AC, Apartado Postal 63, 91000 Xalapa, Veracruz, Mexico. gaohuanhuan368@126.com

ABSTRACT
As an initial step to improve the efficiency of the sterile insect technique applied to eradicate, suppress, and control wild Anastrepha obliqua (Macquart) (Diptera: Tephritidae) in mango producing areas of Mexico, the effect of radiation dose and mass rearing history on male mating performance was examined. Field cage tests in which both male and female laboratory flies were irradiated at different doses (0, 40, and 80 Gy) were released with cohorts of wild flies of both sexes, revealing that both mass rearing history and irradiation affected male mating performance. Laboratory males were accepted for copulation by wild females less frequently than wild males. Copulations involving laboratory males were shorter than those involving wild males. Irradiated males mated less frequently with wild females than wild males, and irradiated females appeared to be less able to reject courting males of both origins. High levels of fertility for untreated laboratory females crossed with males irradiated at different doses may reflect problems in mass rearing affecting homogeneity of pupal age before irradiation, and possibly masked a dose effect. Proposed remedial measures to improve male mating performance are discussed.

Show MeSH

Related in: MedlinePlus

Average percent ± SE egg hatch of eggs laid by non-irradiated laboratory females crossed with laboratory males irradiated either at 0 (black bars), 40 (grey bars), or 80 Gy (white bars). Bars crowned by different letters represent significant differences at the 0.05 level. High quality figures are available online.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC3472967&req=5

f02_01: Average percent ± SE egg hatch of eggs laid by non-irradiated laboratory females crossed with laboratory males irradiated either at 0 (black bars), 40 (grey bars), or 80 Gy (white bars). Bars crowned by different letters represent significant differences at the 0.05 level. High quality figures are available online.

Mentions: Male sterility. A repeated measures ANOVA revealed significant differences in fertility (% hatch) of non-irradiated females mated with males treated with different radiation doses (F12,8 = 74.722, p < 0.01). Females mated with non-irradiated males exhibited significantly greater fertility than those mated with males irradiated at 40 and 80 Gy, between which there were no differences in fertility (Figure 2).


Mass rearing history and irradiation affect mating performance of the male fruit fly, Anastrepha obliqua.

Rull J, Encarnación N, Birke A - J. Insect Sci. (2012)

Average percent ± SE egg hatch of eggs laid by non-irradiated laboratory females crossed with laboratory males irradiated either at 0 (black bars), 40 (grey bars), or 80 Gy (white bars). Bars crowned by different letters represent significant differences at the 0.05 level. High quality figures are available online.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3472967&req=5

f02_01: Average percent ± SE egg hatch of eggs laid by non-irradiated laboratory females crossed with laboratory males irradiated either at 0 (black bars), 40 (grey bars), or 80 Gy (white bars). Bars crowned by different letters represent significant differences at the 0.05 level. High quality figures are available online.
Mentions: Male sterility. A repeated measures ANOVA revealed significant differences in fertility (% hatch) of non-irradiated females mated with males treated with different radiation doses (F12,8 = 74.722, p < 0.01). Females mated with non-irradiated males exhibited significantly greater fertility than those mated with males irradiated at 40 and 80 Gy, between which there were no differences in fertility (Figure 2).

Bottom Line: Irradiated males mated less frequently with wild females than wild males, and irradiated females appeared to be less able to reject courting males of both origins.High levels of fertility for untreated laboratory females crossed with males irradiated at different doses may reflect problems in mass rearing affecting homogeneity of pupal age before irradiation, and possibly masked a dose effect.Proposed remedial measures to improve male mating performance are discussed.

View Article: PubMed Central - PubMed

Affiliation: Instituto de Ecología, AC, Apartado Postal 63, 91000 Xalapa, Veracruz, Mexico. gaohuanhuan368@126.com

ABSTRACT
As an initial step to improve the efficiency of the sterile insect technique applied to eradicate, suppress, and control wild Anastrepha obliqua (Macquart) (Diptera: Tephritidae) in mango producing areas of Mexico, the effect of radiation dose and mass rearing history on male mating performance was examined. Field cage tests in which both male and female laboratory flies were irradiated at different doses (0, 40, and 80 Gy) were released with cohorts of wild flies of both sexes, revealing that both mass rearing history and irradiation affected male mating performance. Laboratory males were accepted for copulation by wild females less frequently than wild males. Copulations involving laboratory males were shorter than those involving wild males. Irradiated males mated less frequently with wild females than wild males, and irradiated females appeared to be less able to reject courting males of both origins. High levels of fertility for untreated laboratory females crossed with males irradiated at different doses may reflect problems in mass rearing affecting homogeneity of pupal age before irradiation, and possibly masked a dose effect. Proposed remedial measures to improve male mating performance are discussed.

Show MeSH
Related in: MedlinePlus