Sexual size dimorphism; Shape; Morphology; Newt; Mesotriton alpestris; Lissotriton helvceticus; Lissotriton vulgaris; Evolution; Polyphenism; Facultative paedomorphosis; Heterochrony; Larzac; Balkans; Body size; SSD; Body length; Sexual dimorphism; Polymorphism
Abstract :
[en] BACKGROUND:Sexual size dimorphism (SSD) is a key evolutionary feature that has been studied in many organisms. In a wide range of species, this pattern is more complex because of polymorphism within each sex. However, it is not known whether the magnitude and direction of SSD could be affected by alternative developmental trajectories within sexes. Our aim was to test whether an intrasexual polymorphism, facultative paedomorphosis (a process in which the development of somatic and gonadal tissues differs in alternative morphs), could affect SSD variation patterns in European newts. RESULTS:We report here the first evidence that SSD varies depending on the paedomorphic or metamorphic ontogenetic pathway. In species with a consistent female-biased SSD, paedomorphosis decreased the SSD level, but did not affect its direction. In species with moderate female-biased SSD or variable SSD patterns, paedomorphosis changed the magnitude, or both the magnitude and the direction, of SSD. CONCLUSIONS:Our study highlights the importance of developmental processes for shaping SSD patterns in populations in which contrasting life-history pathways evolved. European newts express different SSD patterns depending on their developmental pathway (i.e., metamorphosis versus paedomorphosis), as well as their species and population. These findings emphasize the importance of studying alternative morphotypes, which are found in a wide range of animal groups, to understand the evolution of SSD.
Disciplines :
Zoology
Author, co-author :
Denoël, Mathieu ; Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Biologie du comportement - Ethologie et psychologie animale
Ivanovic, Ana; University of Belgrade
Dzukic, Georg; University of Belgrade
Kalezic, Milos; University of Belgrade
Language :
English
Title :
Sexual size dimorphism in the evolutionary context of facultative paedomorphosis: insights from European newts
The evolution of sexual dimorphism in animals: Hypotheses and tests. AV Hedrick EJ Temeles, Trends Ecol Evol 1989 4 136 138 10.1016/0169-5347(89)90212-7
Behavioural causes and consequences of sexual size dimorphism. WU Blanckenhorn, Ethology 2005 111 977 1016 10.1111/j.1439-0310.2005.01147.x (Pubitemid 41527511)
Proximate determinants of sexual differences in adult body size. R Shine, Am Nat 1990 135 278 283 10.1086/285043 (Pubitemid 20429801)
Developmental Plasticity and Evolution. MJ West-Eberhard, Oxford University Press 2003
Evolution of sexual dimorphism and male dimorphism in the expression of beetle horns: Phylogenetic evidence for modularity, evolutionary lability, and constraint. DJ Emlen J Hunt LW Simmons, Am Nat 2005 166 suppl 42 S68 10.1086/444599 16224711
Evolutionary Change and Heterochrony. KJ McNamara ed, Chichester, UK: John Wiley & Sons 1995
Heterochrony and evolution of sexual dimorphism in the fasciatus group of the scincid genus Eumeces. H Griffith, J Herpetol 1991 25 24 30 10.2307/1564790
Paedomorphosis in the Alpine newt (Triturus alpestris): decoupling behavioural and morphological change. M Denol, Behav Ecol Sociobiol 2002 52 394 399 10.1007/s00265-002-0526-7 (Pubitemid 36059081)
Ontogeny and Phylogeny. SJ Gould, Harvard: Harvard University Press 1977
Heterochrony. The Evolution of Ontogeny. ML McKinney KJ McNamara, New York: Plenum Press 1991
Larvae in amphibian development and evolution. J Hanken, The Origin and Evolution of Larval Forms San Diego: Academic Press, Hall BK, Wake MW, 1999 61 108 full-text
Artificial selection for paedomorphosis in the salamander Ambystoma talpoideum. RD Semlitsch HM Wilbur, Evolution 1989 43 105 112 10.2307/2409167
Evolutionary ecology of facultative paedomorphosis in newts and salamanders. M Denol HH Whiteman P Joly, Biol Rev 2005 80 663 671 10.1017/S1464793105006858 16221333
Biology of Amphibians. WE Duellman L Trueb eds, Baltimore, Maryland: The John Hopkins University Press 1986 2004
Sexual size and shape dimorphism in two species of newts, Triturus cristatus and T. vulgaris (Caudata: Salamandridae). JC Malmgren M Thollesson, J Zool 1999 249 127 136 10.1111/j.1469-7998.1999.tb00750.x
Evolutionary Ecology of Newts. JC Malmgrem, Published PhD Thesis: rebro Studies in Biology 1 rebro: rebro University 2001
Sexual size and shape evolution in European newts (Amphibia: Caudata: Salamandridae) on the Balkan Peninsula. A Ivanovi K Sotiropoulos M Furtula G Duki M Kalezi J Zool Syst Evol Res 2008 46 381 387 10.1111/j.1439-0469.2008. 00479.x
A multi-scale approach to facultative padomorphosis of European newts in the Montenegrin karst: distribution pattern, environmental variables and conservation. M Denol GF Ficetola R irovi D Radovi G Duki ML Kalezi TD Vukov, Biol Conserv 2009 142 509 517 10.1016/j.biocon.2008.11.008
Priority areas of intraspecific diversity: Larzac, a global hotspot for facultative paedomorphosis in amphibians. M Denol, Anim Cons 2007 10 110 118 10.1111/j.1469-1795.2006.00081.x (Pubitemid 46189185)
Sexual size dimorphism in amphibians: an overview. A Kupfer, Sex, Size, and Gender Roles: Evolutionary Studies of Sexual Size Dimorphism Oxford: Oxford University Press, Fairbairn DJ, Blanckhenhorn UW, Szekely T, 2007 50 59
Morphometrics in Evolutionary Biology. FL Bookstein B Chernoff R Elder JM Humphries GR Smith RE Strauss, Philadelphia: Academy of Natural Sciences 1985
An Introduction to the Bootstrap. B Efron RJ Tibshirani, Chapman & Hall 1993
Equal mating success among male reproductive strategies in a marine isopod. SM Shuster MJ Wade, Nature 1991 350 606 610 10.1038/350608a0
Male morph determination in two species of acarid mites. J Radwan, Heredity 1995 74 669 673 10.1038/hdy.1995.91
Salmon breeding behavior and life history evolution in changing environments. MR Gross, Ecology 1991 72 1180 1186 10.2307/1941091
Multivariate sexual dimorphism, sexual selection, and adaptation in Greater Antillean Anolis lizards. MA Butler JB Losos, Ecol Monogr 2002 72 541 559
Growing apart: an ontogenetic perspective on the evolution of sexual size dimorphism. AV Badyaev, Trends Ecol Evol 2002 17 369 378 10.1016/S0169-5347(02) 02569-7 (Pubitemid 34775258)
Processes that constraint and facilitate the evolution of sexual dimorphism. LF Delph, Am Nat 2005 166 1 S4 10.1086/462434 16224708
Proximate developmental mediators of sexual dimorphism in size: case studies from squamate reptiles. HB John-Adler RM Cox EN Taylor, Integr Comp Biol 2007 47 258 271 10.1093/icb/icm010 (Pubitemid 47227143)
Allometry for sexual size dimorphism: pattern and process in the coevolution of body size in males and females. DJ Fairbairn, Annu Rev Ecol Syst 1997 28 659 687 10.1146/annurev.ecolsys.28.1.659 (Pubitemid 28012307)
Sex, Size, and Gender Roles: Evolutionary Studies of Sexual Size Dimorphism. DJ Fairbairn UW Blanckhenhorn T Szekely eds, Oxford: Oxford University Press 2007
Life-history variation and allometry for sexual size dimorphism in pacific salmon and trout. KA Young, Proc R Soc Lond Ser B Biol Sci 2005 272 167 172 10.1098/rspb.2004.2931
Sexual size dimorphism in anurans. JM Monnet MI Cherri, Proc R Soc Lond Ser B Biol Sci 2002 269 2301 2307 10.1098/rspb.2002.2170 (Pubitemid 35397510)
Neoteny and progenesis as two heterochronic processes involved in paedomorphosis in Triturus alpestris (Amphibia: Caudata). M Denol P Joly, Proc R Soc Lond Ser B Biol Sci 2000 267 1481 1485 10.1098/rspb.2000.1168
Alternative life-history pathways: paedomorphosis and adult fitness in European newts (Triturus vulgaris and T. alpestris). ML Kalezi D Cvetkovi A Djorovi G Duki J Zool Syst Evol Res 1996 34 1 7
Sexual size and shape difference in the crested newt (Triturus carnifex): ontogenetic growth aspects. D Cvetkovi ML Kalezi G Duki Alytes 1997 15 37 48
How do paedomorphic newts cope with lake drying? M Denol, Ecography 2003 26 405 410 10.1034/j.1600-0587.2003.03366.x (Pubitemid 37123892)
The effect of food on growth and metamorphosis of paedomorphs in Triturus alpestris apuanus. M Denol P Poncin, Arch Hydrobiol 2001 152 661 670
Trophic specializations in alternative heterochronic morphs. M Denol R Schabetsberger P Joly, Naturwissenschaften 2004 91 81 84 10.1007/s00114-003- 0492-6 14991145