Apparent Directional Selection of Body Size in Drosophila buzzatii: Larval Crowding and Male Mating Success

Evolution ◽  
1996 ◽  
Vol 50 (6) ◽  
pp. 2530 ◽  
Author(s):  
Mauro Santos
Keyword(s):  
Body Size ◽  
Mating Success ◽  
Directional Selection ◽  
Male Mating ◽  
Male Mating Success ◽  
Drosophila Buzzatii ◽  
Larval Crowding ◽  
Selection Of

scholarly journals Sexual dimorphism, body size, bite force and male mating success in tuatara

2010 ◽  
Vol 100 (2) ◽  
pp. 287-292 ◽  
Author(s):  
ANTHONY HERREL ◽  
JENNIFER A. MOORE ◽  
EVAN M. BREDEWEG ◽  
NICOLA J. NELSON
Keyword(s):  
Body Size ◽  
Sexual Dimorphism ◽  
Mating Success ◽  
Bite Force ◽  
Male Mating ◽  
Male Mating Success

scholarly journals Male mating success in a North American pitviper: influence of body size, testosterone, and spatial metrics

2015 ◽  
Vol 115 (1) ◽  
pp. 185-194 ◽  
Author(s):  
Charles F. Smith ◽  
Gordon W. Schuett ◽  
Melissa Amarello
Keyword(s):  
Body Size ◽  
North American ◽  
Mating Success ◽  
Male Mating ◽  
Male Mating Success ◽  
Spatial Metrics

Mating behavior and determinants of male mating success in the gray treefrog, Hyla chrysoscelis

1991 ◽  
Vol 69 (1) ◽  
pp. 246-250 ◽  
Author(s):  
Mark E. Ritke ◽  
Raymond D. Semlitsch
Keyword(s):  
Body Size ◽  
Mating Behavior ◽  
Mating Success ◽  
Male Mating ◽  
Hyla Chrysoscelis ◽  
Male Mating Success ◽  
Male Aggression ◽  
Previous Night ◽  
Significant Difference ◽  
Gray Treefrog

We studied mating behavior and male mating success in a population of gray treefrogs (Hyla chrysoscelis) during 1987 and 1988 in western Tennessee. During 1988, individual males called from 1 to 7 nights ([Formula: see text]) and mated 0–4 times ([Formula: see text]). The number of nights that males called or achieved amplexus was not related to body size, but males that called on more nights had a relatively greater chance of mating. There was no significant difference in body size between mated and unmated males on any of the nights tested. Males that mated or called on a previous night were not more likely to achieve amplexus than males that had not mated previously or those that were new to the population. We have no strong evidence to suggest that assortative mating was characteristic of our population or that male–male aggression directly influences female choice.

Does body size influence mating success? A morphometric study of two Anastrepha (Diptera: Tephritidae) fruit fly species

2021 ◽  
pp. 1-13
Author(s):  
Mayren Sánchez-Rosario ◽  
Diana Pérez-Staples ◽  
Javier Valle-Mora ◽  
Daniel Sánchez-Guillén ◽  
Lorena Ruiz-Montoya ◽  
...  
Keyword(s):  
Body Size ◽  
Mating Success ◽  
Morphometric Study ◽  
Anastrepha Ludens ◽  
Head Width ◽  
Male Mating ◽  
Male Mating Success ◽  
Male Size ◽  
Morphometric Traits ◽  
Wild Female

Abstract Male mating success depends on various traits and factors, and correctly identifying these traits can be key in the context of pest management. For tephritid pests, controlled through the sterile insect technique (SIT) traits, such as male size, can be manipulated through mass-rearing procedures. Thus, it is particularly important to understand whether male size can favor mating success. Here, we evaluated mating success of males of different sizes in Anastrepha ludens and Anastrepha obliqua, two species controlled through SIT. For both species, a morphometric analysis was performed of mated and unmated mass-reared and wild males in field cages. In both A. ludens and A. obliqua, wild females did not discriminate their mates based on male size and mated more frequently with wild males regardless of size. For mass-reared males, we found no evidence of an advantage of the large males compared to small males in mating success. However, we did find differences between the morphometric traits of mass-reared and wild males. In A. ludens, traits associated to mating success were Face Width (FW), Head Width (HW), Thorax Length (TL) and Wing Length (WL), and for A. obliqua were FW, HW, WL and WW (Wing Width). Overall, FW and TL were more consistent predictors of mating success. In conclusion, female choice seems to suggest multivariate selection, confirming that overall body size (expressed as pupal diameter, which is highly correlated with weight) is not a decisive factor in male mating success in these two species. However, morphological traits such as FW, HW, TL, WL and WW may be relevant in mating preference of wild female.

Male Mating Success and Body Size in European Grass Snakes

Copeia ◽  
1993 ◽  
Vol 1993 (2) ◽  
pp. 561 ◽  
Author(s):  
Thomas Madsen ◽  
Richard Shine
Keyword(s):  
Body Size ◽  
Mating Success ◽  
Male Mating ◽  
Male Mating Success

scholarly journals Residual reproductive value and male mating success: older males do better

2008 ◽  
Vol 275 (1642) ◽  
pp. 1517-1524 ◽  
Author(s):  
Klaus Fischer ◽  
Jana Perlick ◽  
Tobias Galetz
Keyword(s):  
Life History ◽  
Body Size ◽  
Mating Success ◽  
Reproductive Value ◽  
Male Mating ◽  
Male Body ◽  
Male Mating Success ◽  
Residual Reproductive Value ◽  
Sexually Selected Traits ◽  
Older Males

Evolution via sexual selection has traditionally been viewed as isolated from life-history constraints. As additionally reproductive resource allocation in males is underexplored, it is rather unclear how life-history factors have shaped lifetime investment into male sexually selected traits. Against this background, we here investigate male butterfly mating success in relation to age, nutritional status, assay condition and wing damage. As predicted, based on a low residual reproductive value, older males had a considerably higher mating success than younger males. Comparisons between virgin and once-mated males suggest that this pattern is related to age per se rather than differential ratings of the resource receptive female. We found no evidence for male body size or condition being important, supporting the notion that in weaponless animals intrinsic motivation is more important for mating success than the differences in physical properties (such as body size or condition). Flight cage experiments suggest that such differences in motivation may be masked under more natural conditions, where flight performance, having a clear impact on mating success (as evidenced by wing manipulation experiments), is likely to be crucial. We conclude that the life-history perspective is a fruitful one for gaining a better understanding of the evolution of sexually selected characters and the predictions derived from contest theory do also apply to male mating success.

scholarly journals Body Size, Not Personality, Explains Both Male Mating Success and Sexual Cannibalism in a Widow Spider

Biology ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 189
Author(s):  
Rok Golobinek ◽  
Matjaž Gregorič ◽  
Simona Kralj-Fišer
Keyword(s):  
Body Size ◽  
Individual Variation ◽  
Mating Success ◽  
Male Mating ◽  
Sexual Cannibalism ◽  
Male Mating Success ◽  
Aggressive Behaviors ◽  
Black Widow ◽  
The Mediterranean ◽  
Spillover Hypothesis

Theory suggests that consistent individual variation in behavior relates to fitness, but few studies have empirically examined the role of personalities in mate choice, male-male competition and reproductive success. We observed the Mediterranean black widow, Latrodectus tredecimguttatus, in the individual and mating context, to test how body size measures and two functionally important aggressive behaviors, i.e., male aggression towards rivals and female voracity towards prey, affect mating behaviors, mating success and sexual cannibalism. We specifically selected voracity towards prey in females to test the “aggressive spillover hypothesis”, suggesting that more voracious females are more sexually cannibalistic. Both females and males exhibit consistent individual differences in the examined aggressive behaviors. While larger males win contests more often and achieve more copulations, neither male nor female size measures correlate to aggression. Female voracity does not correlate with aggression towards mates and sexual cannibalism, rejecting the “spillover hypothesis”. However, occurrence of sexual cannibalism positively relates to longer insertion duration. Furthermore, the smaller the ratio between male and female body length the more likely a female attacked and cannibalized a mate. We show that individual variation in aggression levels plays no direct role in the mating behavior of the Mediterranean black widow. Instead, body size affects male mating success and occurrences of sexual cannibalism in females.

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