LIFETIME SELECTION ON ADULT BODY SIZE AND COMPONENTS OF BODY SIZE IN A WATERSTRIDER: OPPOSING SELECTION AND MAINTENANCE OF SEXUAL SIZE DIMORPHISM

Evolution ◽  
2000 ◽  
Vol 54 (2) ◽  
pp. 558 ◽  
Author(s):  
Richard F. Preziosi ◽  
Daphne J. Fairbairn
Keyword(s):  
Body Size ◽  
Sexual Size Dimorphism ◽  
Size Dimorphism ◽  
Adult Body Size ◽  
Adult Body

Ontogeny and the evolution of adult body size dimorphism in apes

1995 ◽  
Vol 36 (1) ◽  
pp. 37-60 ◽  
Author(s):  
Steven R. Leigh ◽  
Brian T. Shea
Keyword(s):  
Body Size ◽  
Size Dimorphism ◽  
Adult Body Size ◽  
Adult Body

scholarly journals A uni- and multivariate analysis approach to reveal sexual size dimorphism in Iranian populations of Hypera postica (Coleoptera: Curculionidae)

Biologia ◽  
2015 ◽  
Vol 70 (9) ◽  
pp. 1228-1233 ◽  
Author(s):  
Ehsan Sanaei ◽  
Marjan Seiedy ◽  
Farzaneh Momtazi
Keyword(s):  
Body Size ◽  
Sexual Size Dimorphism ◽  
Egg Laying ◽  
Morphological Divergence ◽  
High Fecundity ◽  
Hypera Postica ◽  
Size Dimorphism ◽  
Female Body Size ◽  
Divergence Pattern ◽  
Iranian Populations

Abstract Body size dimorphism between genders is a commonly observed phenomenon in insects, usually manifested in larger female body size. Sexual Size Dimorphism (SSD) varies from species to species, the degree and direction influenced by certain evolutionary pressures. Intraspecific variation in SSD may also occur between populations. The Hypera postica (Gyllenhal, 1813) is a well-known alfalfa plant pest that shows a degree of morphological divergence in its populations. The female alfalfa weevils are very fecund and have a larger body size compared to males. To improve our knowledge on magnitude and direction of SSD in alfalfa weevil, we studied 200 specimens of H. postica from four Iranian populations (Karaj1, Karaj2, Tuyserkan and Jovein). 10 morphological variables from three external anatomic parts (pronotum, elytra and rostrum) and 45 ratio characters were statistically analyzed in order to determine the amount of SSD in Iranian populations. In addition we investigated for morphological divergence pattern in mentioned populations. The results of this study show that a low degree of morphological divergence occurs in Iranian populations. Measured variables indicate that the SSD pattern of H. postica is compatible with the Rensch’s rule, and is related to high fecundity of females and a lack of strong sexual selection. Also it is mentioned that the larger rostrum in females may correspond to its unique role in egg laying.

scholarly journals Heritability and adaptive phenotypic plasticity of adult body size in the mosquito Aedes aegypti with implications for dengue vector competence

2011 ◽  
Vol 11 (1) ◽  
pp. 11-16 ◽  
Author(s):  
Jennifer R. Schneider ◽  
Dave D. Chadee ◽  
Akio Mori ◽  
Jeanne Romero-Severson ◽  
David W. Severson
Keyword(s):  
Body Size ◽  
Phenotypic Plasticity ◽  
Aedes Aegypti ◽  
Vector Competence ◽  
Dengue Vector ◽  
Adult Body Size ◽  
Adult Body ◽  
Adaptive Phenotypic Plasticity

Sexual size dimorphism in the American rubyspot: male body size predicts male competition and mating success

2007 ◽  
Vol 73 (6) ◽  
pp. 987-997 ◽  
Author(s):  
M.A. Serrano-Meneses ◽  
A. Córdoba-Aguilar ◽  
V. Méndez ◽  
S.J. Layen ◽  
T. Székely
Keyword(s):  
Body Size ◽  
Mating Success ◽  
Sexual Size Dimorphism ◽  
Male Competition ◽  
Male Body ◽  
Size Dimorphism ◽  
Male Body Size
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