caa a22 4500 477090885 CHVBK 20180405111514.0 cr unu---uuuuu 170330e19960101xx s 000 0 eng 10.1007/BF01239350 doi (NATIONALLICENCE)springer-10.1007/BF01239350 Sexual selection and the allometry of earwig forceps [Elektronische Daten] [L. Simmons, J. Tomkins] Summary: Positive intraspecific allometry, the tendency for large individuals to have relatively larger morphological traits, is thought to be more likely for secondary sexual traits than naturally selected traits. This is because secondary sexual traits are often used to signal individual quality and positive allometry should arise where the costs and/or benefits of signalling are size dependent. Here we examine the allometric relationships between forceps length, a sexually selected trait and elytra length, a naturally selected trait, in 42 species of earwig. Both forceps and elytra showed positive allometry. However, the degree of allometry was greater for forceps as predicted. If allometry arises due to sexual selection we would predict a greater degree of allometry in species with more exaggerated secondary sexual traits. Across species, the degree of forcep allometry did increase with forcep exaggeration. The relevance of positive allometry to reliable signalling is discussed. Chapman & Hall, 1996 Dermaptera nationallicence secondary sexual traits nationallicence positive allometry nationallicence display nationallicence Simmons L. Department of Environmental and Evolutionary Biology, University of Liverpool, POBox 147, L69 3BX, Liverpool, UK aut Tomkins J. Department of Environmental and Evolutionary Biology, University of Liverpool, POBox 147, L69 3BX, Liverpool, UK aut Evolutionary Ecology Kluwer Academic Publishers 10/1(1996-01-01), 97-104 0269-7653 10:1<97 1996 10 10682 https://doi.org/10.1007/BF01239350 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01239350 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Simmons L. Department of Environmental and Evolutionary Biology, University of Liverpool, POBox 147, L69 3BX, Liverpool, UK aut NATIONALLICENCE 700 1- Tomkins J. Department of Environmental and Evolutionary Biology, University of Liverpool, POBox 147, L69 3BX, Liverpool, UK aut NATIONALLICENCE 773 0- Evolutionary Ecology Kluwer Academic Publishers 10/1(1996-01-01), 97-104 0269-7653 10:1<97 1996 10 10682 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer