Correlated evolution of colour pattern and body size in polymorphic pygmy grasshoppers, Tetrix undulata
نویسندگان
چکیده
منابع مشابه
Experimental manipulation reveals differential effects of colour pattern on survival in male and female pygmy grasshoppers
There are ample data to suggest that colour pattern contributes to individual variation in susceptibility to visually orientated predators (e.g. Isley, 1938; Cott, 1940; Kettlewell, 1973; Brodie, 1992; Endler, 1991, 1995; GoÈ tmark, 1994; Forsman & Shine, 1995; Kingsolver, 1995, 1996). Several studies also have shown that individual differences in behaviours such as microhabitat use, reaction d...
متن کاملCamouflage Effects of Various Colour-Marking Morphs against Different Microhabitat Backgrounds in a Polymorphic Pygmy Grasshopper Tetrix japonica
BACKGROUND Colour-marking polymorphism is widely distributed among cryptic species. To account for the adaptive significance of such polymorphisms, several hypotheses have been proposed to date. Although these hypotheses argue over the degree of camouflage effects of marking morphs (and the interactions between morphs and their microhabitat backgrounds), as far as we know, most empirical eviden...
متن کاملDiversity and Relatedness Enhance Survival in Colour Polymorphic Grasshoppers
Evolutionary theory predicts that different resource utilization and behaviour by alternative phenotypes may reduce competition and enhance productivity and individual performance in polymorphic, as compared with monomorphic, groups of individuals. However, firm evidence that members of more heterogeneous groups benefit from enhanced survival has been scarce or lacking. Furthermore, benefits as...
متن کاملEcological drivers of body size evolution and sexual size dimorphism in short-horned grasshoppers (Orthoptera: Acrididae).
Sexual size dimorphism (SSD) is widespread and variable in nature. Although female-biased SSD predominates among insects, the proximate ecological and evolutionary factors promoting this phenomenon remain largely unstudied. Here, we employ modern phylogenetic comparative methods on eight subfamilies of Iberian grasshoppers (85 species) to examine the validity of different models of evolution of...
متن کاملMicro-Evolution in Grasshoppers Mediated by Polymorphic Robertsonian Translocations
This review focuses on grasshoppers that are polymorphic for Robertsonian translocations because in these organisms the clarity of meiotic figures allows the study of both chiasma distribution and the orientation of trivalents and multivalents in metaphase I. Only five species of such grasshoppers were found in the literature, and all of them were from the New World: Oedaleonotus enigma (Scudde...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Evolutionary Biology
سال: 2003
ISSN: 1010-061X,1420-9101
DOI: 10.1046/j.1420-9101.2003.00610.x