Zingerone and the mating success and field attraction of male melon flies (Diptera: Tephritidae)

Henosepilachna vigintioctopunctata (F.) is a serious pest of numerous solanaceous crops in many Asian countries. The purpose of this study was to clarify the effects of delayed mating on mating success, fecundity, fertility, pre-oviposition period, oviposition period, adult longevity, and population life table parameters (including net reproductive rate, intrinsic and finite rates of increase, doubling time, and mean generation time) of H. vigintioctopunctata. Beginning three days after emergence for both sexes, mating was delayed an additional 0, 2, 4, 6, or 8 days. We compared the data when mating was delayed for males only with the data when mating was similarly delayed for females only. Reproductive and life table parameters were calculated from the two data sets and compared. The results showed that the preoviposition and oviposition period of adults was significantly reduced by delayed mating, while the preoviposition period was not significantly different in adults mated at older ages. The mating success rate, fecundity, and proportion of hatching eggs decreased with increasing mating age. Longevity was not affected by the age at mating. Mating delay also affected the life table parameters of H. vigintioctopunctata, with a similar trend observed in the net reproductive rate and intrinsic and finite rates of increase, all of which decreased gradually as the number of delay days increased. The population doubling time increased with increases in mating age. The results also showed that delayed mating was an effective measure to consider in controlling H. vigintioctopunctata. It is hoped that our data will provide a scientific basis and contribute technical guidance for forecasting and integrated management of this pest.

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Preconceptional Resveratrol Supplementation Partially Counteracts Age-Related Reproductive Complications in C57BL/6J Female Mice

Molecules ◽

10.3390/molecules26071934 ◽

2021 ◽

Vol 26 (7) ◽

pp. 1934

Author(s):

Marta Ziętek ◽

Katarzyna Barłowska ◽

Barbara Wijas ◽

Ewa Szablisty ◽

Atanas G. Atanasov ◽

...

Keyword(s):

Drinking Water ◽

Animal Models ◽

Mating Success ◽

Pregnancy Outcomes ◽

Pregnancy Complications ◽

Polyphenolic Compound ◽

Female Mice ◽

Age Related ◽

Increased Risk ◽

Anti Oxidant

Aging is associated with a drastic decline in fertility/fecundity and with an increased risk of pregnancy complications. Resveratrol (RES), a natural polyphenolic compound, has shown anti-oxidant and anti-inflammatory activities in both human and animal models, thus representing a potential therapeutic and prophylactic anti-aging supplement. Here, we investigated whether preconceptional resveratrol supplementation improved reproductive outcomes in mid-aged (8-month-old) and old (12-month-old) C57BL/6J female mice. Female siblings were cohoused and assigned to either RES or vehicle supplementation to drinking water for 10 consecutive weeks. Subsequently, females were mated with non-supplemented males and their pregnancy outcomes were monitored. RES improved mating success in old, but not in mid-aged females, and prevented the occurrence of delivery complications in the latter. These results indicate that preconceptional RES supplementation could partially improve age-related reproductive complications, but it was not sufficient to restore fecundity in female mice at a very advanced age.

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ADAPTATION AT SPECIFIC LOCI. IV. DIFFERENTIAL MATING SUCCESS AMONG GLYCOLYTIC ALLOZYME GENOTYPES OF COLIAS BUTTERFLIES

Genetics ◽

10.1093/genetics/109.1.157 ◽

1985 ◽

Vol 109 (1) ◽

pp. 157-175

Author(s):

Ward B Watt ◽

Patrick A Carter ◽

Sally M Blower

Keyword(s):

Mating Success ◽

Initial Study ◽

Heterozygote Advantage ◽

Male Mating ◽

Genotype Distribution ◽

Male Mating Success ◽

Evolutionary Forces ◽

Fitness Index ◽

In The Wild ◽

Specific Variation

ABSTRACT Male mating success as a function of genotype is an important fitness component. It can be studied in wild populations, in species for which a given group of progeny has exactly one father, by determining genotypes of wild-caught mothers and of sufficient numbers of their progeny. Here, we study male mating success as a function of allozyme genotype at two glycolytic loci in Colias butterflies, in which sperm precedence is complete, so that the most recent male to mate fathers all of a female's subsequent progeny.—For the phosphoglucose isomerase, PGI, polymorphism, we predict mating advantage and disadvantage of male genotypes based on evaluation of their biochemical functional differences in the context of thermal-physiological-ecological constraints on the insects' flight activity. As predicted, we find major, significant advantage in mating success for kinetically favored genotypes, compared to the genotype distribution of males active with the sampled females in the wild. These effects are repeatable among samples and on different semispecies' genetic backgrounds.—Initial study of the phosphoglucomutase, PGM, polymorphism in the same samples reveals heterozygote advantage in male-mating success, compared to males active with the females sampled. This contrasts with a lack of correspondence between PGI and PGM genotypes in other fitness index or component differences.—Epistatic interactions in mating success between the two loci are absent.—There is no evidence for segregation distortion associated with the alleles of either primary locus studied, nor is there significant assortative mating.—These results extend our understanding of the specific variation studied and suggest that even loci closely related in function may have distinctive experience of evolutionary forces. Implications of the specificity of the effects seen are briefly discussed.

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Male competition and the evolution of mating and life-history traits in experimental populations of Aedes aegypti

Proceedings of The Royal Society B Biological Sciences ◽

10.1098/rspb.2019.0591 ◽

2019 ◽

Vol 286 (1904) ◽

pp. 20190591 ◽

Cited By ~ 5

Author(s):

Alima Qureshi ◽

Andrew Aldersley ◽

Brian Hollis ◽

Alongkot Ponlawat ◽

Lauren J. Cator

Keyword(s):

Life History ◽

Aedes Aegypti ◽

Mating Success ◽

Life History Traits ◽

Male Competition ◽

Male Mating ◽

Male Mating Success ◽

Reproductive Control ◽

Evolutionary Response ◽

Mating Conditions

Aedes aegypti is an important disease vector and a major target of reproductive control efforts. We manipulated the opportunity for sexual selection in populations of Ae . aegypti by controlling the number of males competing for a single female. Populations exposed to higher levels of male competition rapidly evolved higher male competitive mating success relative to populations evolved in the absence of competition, with an evolutionary response visible after only five generations. We also detected correlated evolution in other important mating and life-history traits, such as acoustic signalling, fecundity and body size. Our results indicate that there is ample segregating variation for determinants of male mating competitiveness in wild populations and that increased male mating success trades-off with other important life-history traits. The mating conditions imposed on laboratory-reared mosquitoes are likely a significant determinant of male mating success in populations destined for release.

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