scholarly journals Nutritional enrichment increases courtship intensity and improves mating success in male spiders

2009 ◽  
Vol 20 (4) ◽  
pp. 700-708 ◽  
Author(s):  
Johannes Peter Lomborg ◽  
Søren Toft
Keyword(s):  
Mating Success ◽  
Courtship Intensity

Parental care as a constraint on male mating success in fishes: a comparative study of threespine and white sticklebacks

1992 ◽  
Vol 70 (5) ◽  
pp. 956-962 ◽  
Author(s):  
I. G. Jamieson ◽  
D. M. Blouw ◽  
P. W. Colgan
Keyword(s):  
Parental Care ◽  
Mating Success ◽  
Gasterosteus Aculeatus ◽  
The Other ◽  
Random Pattern ◽  
Breeding Period ◽  
Male Mating ◽  
Male Mating Success ◽  
The Third ◽  
Courtship Intensity

To investigate constraints imposed by male parental behavior on male mating success we compared mate competition in two related 'species' of stickleback, one showing parental care (threespine stickleback, Gasterosteus aculeatus), the other not (white stickleback, Gasterosteus sp.). Three males of each species (tested separately) competed for spawnings with gravid females over a 10-day period. Our findings showed that once a threespine male acquires its first clutch of eggs, the chances of it spawning successively over the next 4 days increase, after which courtship activity declines and parental care of eggs increases. This leads to a serial pattern of spawning amongst the three males in which the second male spawns successively in its nest after the first male has completed its spawnings, followed by the third male, if it spawns at all. However, the third male is more likely to steal fertilizations in the nests of the other two males; stolen fertilizations represented an estimated 29% of the spawning frequency of the third male, compared with 5 and 0% for the second and first males, respectively. The order in which threespine males spawned was correlated with the order in which they initiated nest construction and their ability to defend and maintain a nest site. Immediately after spawning, white stickleback males disperse their eggs among clumps of filamentous algae, where the eggs develop without further parental assistance. In contrast to threespines, white sticklebacks tested under the same competitive conditions showed a random pattern of spawning amongst the three males and stolen fertilizations were not observed. This difference in spawning pattern presumably reflects the time constraint imposed on the sexual phase by the imminent need for parental care once a threespine male obtains eggs. Without the need for parental care of eggs, white males that spawn are not under the same time constraints and therefore each successive spawning is of equal value among competing males, resulting in a random pattern of spawning. In contrast, an asymmetry exists in threespines in which males with freshly spawned eggs in their nest increase their courtship intensity relative to males without eggs, resulting in a serial or ordered pattern of spawning among the males. It is further suggested that stolen fertilizations may be a secondary adaptation to offset any inability to compete effectively for nest sites and females during the initial part of the breeding period.

Longevity and Male Mating Success in Drosophila pseudoobscura

1981 ◽  
Vol 117 (6) ◽  
pp. 1035-1039 ◽  
Author(s):  
Charles E. Taylor ◽  
Cindra Condra ◽  
Michael Conconi ◽  
Mary Prout
Keyword(s):  
Mating Success ◽  
Drosophila Pseudoobscura ◽  
Male Mating ◽  
Male Mating Success

Flight dimorphism is related to survival, reproduction and mating success in the leaf beetle Oreina cacaliae

2017 ◽  
Vol 42 (3) ◽  
pp. 355-363 ◽  
Author(s):  
NICOLE M. KALBERER ◽  
MATHIAS KÖLLIKER
Keyword(s):  
Mating Success ◽  
Leaf Beetle

scholarly journals Effects of Delayed Mating on the Reproductive Performance of Henosepilachna vigintioctopunctata (F.) (Coleoptera: Coccinellidae)

Insects ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 629
Author(s):  
Ya-Ling Wang ◽  
Qi-Nian Jin ◽  
Xiang-Ping Wang
Keyword(s):  
Life Table ◽  
Mating Success ◽  
Doubling Time ◽  
Reproductive Rate ◽  
Oviposition Period ◽  
Population Doubling ◽  
Life Table Parameters ◽  
Effective Measure ◽  
Net Reproductive Rate ◽  
Henosepilachna Vigintioctopunctata

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.

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

Molecules ◽  
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.

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

Genetics ◽  
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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