Survival Selection; trans-generational competition; Population dynamics; Frequency Dependent Selection; Rock-Paper-Scissors Game; Coloration; Sexual Selection; Populations Experiments; Zootoca vivipara; common lizard
Horreo Jose Luis, Jiménez-Valverde Alberto, Fitze Patrick S (2016), Ecological change predicts population dynamics and genetic diversity over 120 000 years., in Global change biology
, 22(5), 1737-45.
Breedveld Merel C, Fitze Patrick S (2016), Experimental evidence that sperm maturation drives protandry in an ectotherm., in Oecologia
, 182(1), 129-37.
San-Jose Luis M, Peñalver-Alcázar Miguel, Huyghe Katleen, Breedveld Merel C, Fitze Patrick S (2016), Inter-class competition in stage-structured populations: effects of adult density on life-history traits of adult and juvenile common lizards., in Oecologia
, 182(4), 1063-1074.
Breedveld Merel, San-Jose Luis M., Romero-Diaz Cristina, Roldan Eduardo, Fitze Patrick S. (2016), Mate availability affects the conflict between producing one ormultiple annual clutches., in Oecologia
, 123, 43-51.
Peñalver-Alcázar Miguel, Aragón Pedro, Breedveld Merel C, Fitze Patrick S (2016), Microhabitat selection in the common lizard: implications of biotic interactions, age, sex, local processes, and model transferability among populations., in Ecology and evolution
, 6, 3594-3607.
Horreo J.L. Peláez M.L. Fitze P.S. (2015), Skin sheds as a useful DNA source for lizard conservation., in Phyllomedusa
, 14, 73-77.
Breedveld M.C. Fitze P.S. (2015), A matter of time: delayed mate encounter postpones mating window initiation and reduces the strength of female choosiness., in Behavioral Ecology and Sociobiology
, 69, 533-541.
Peñalver-Alcázar M. Romero-Diaz C. Fitze P.S. (2015), Communal egg-laying in oviparous Zootoca vivipara louislantzi of the Central Pyrenees, in Herpetology Notes
, 8, 4-7.
Horreo J.L. Fitze P. (2015), Population structure of three Psammodromus species in the Iberian Peninsula., in PeerJ
, 3, e994.
San-Jose Luis M, Peñalver-Alcázar Miguel, Milá Borja, Gonzalez-Jimena Virginia, Fitze Patrick S (2014), Cumulative frequency-dependent selective episodes allow for rapid morph cycles and rock-paper-scissors dynamics in species with overlapping generations., in Proceedings. Biological sciences
, 281(1788), 20140976-20140976.
Fitze Patrick S., Gonzalez Jimena Virginia, San-Jose Luis M., Heulin Benoit, Sinervo Barry (2014), Frequency-dependent sexual selection with respect to offspring fitness returns is consistent with predictions from rock-paper-scissors dynamics in the European common lizard., in Frontiers in Ecology and Evolution
, 2, 1-11.
Aragón Pedro, Fitze Patrick S (2014), Geographical and temporal body size variation in a reptile: roles of sex, ecology, phylogeny and ecology structured in phylogeny., in PloS one
, 9(8), 104026-104026.
Horreo Jose Luis, Peláez Maria Luisa, Suárez Teresa, Heulin Benoit, Fitze Patrick S., Development of 34 new and multiplexing of seven existing microsatellite loci for Zootoca vivipara (Squamata: Lacertidae)., in Phyllomedusa
, 17(1), 1.
Breedveld M.C. Fitze P.S., The timing and interval of mate encounter affects investment during mating, in Biological Journal of the Linnean Society
Rock-paper-scissors (RPS) social systems potentially lead to socially mediated speciation and big radiations. While RPS social systems have previously been thought to be limited to a few special cases (e.g. Uta stansburiana), accumulating evidence indicates that rock-paper-scissors (RPS) social systems are far more widespread than previously thought (Sinervo & Calsbeek, 2006). RPS social systems are nowadays described in reptiles (e.g. Uta stansburiana, Zootoca vivipara), fish (Cyclids), insects (e.g. Ischnura elegans), isopodes (e.g. Paracerceis sculpta), plants (Lythrum salicaria), bacteria (E. coli) (Kerr et al., 2002; Sinervo & Calsbeek, 2006), and even between different species and levels of biological organization (Sinervo & Calsbeek, 2006). Most RPS social systems are suggested to arise due to frequency-dependent selection (FDS). For example, the RPS social systems described in two lizard species, are based on a male colour-polymorphism, which is genetically linked to male reproductive strategy. In both systems it is suggested that the observed male colour-morph frequency cycles are driven by negative frequency-dependent selection (nFDS) arising due to sexual selection. While in Uta stansburiana mainly male-male competition among male colour-morphs explains the observed male colour-morph cycles, a theoretical model in Zootoca vivipara suggested that both male-male competition and context-dependent female mate choice might drive the cycles (Sinervo et al., 2007). First experimental results obtained during the SNF Professorship grant demonstrate that in Zootoca vivipara sexual selection depends on adult male colour morph frequency, that FD survival selection exists in maturing offspring, and that offspring of the male colour morph with highest success during sexual selection survive at a higher rate, than those of morphs with lower success (results of objective 220.127.116.11). These results are consistent with the assumptions of the theoretical models showing that RPS-dynamics may lead to rapid speciation (van Doorn et al., 2004). Most of the theoretical models describing RPS-dynamics make strong assumptions about the determinants of survival selection and the link between the colour morph and behavioural strategies. The generally assume that FD survival selection on maturing offspring is imposed by adult males (Sinervo et al., 2007) and that there exists a genetic linkage between male colour morph and male behavioural strategies (e.g. Sinervo & Lively, 1996; Sinervo et al., 2007), determining the level of competition. However, to date there exists no evidence that offspring survival selection is imposed by trans-generational competition and thus it is not clear whether the evolution of RPS-dynamics requires a genetic correlation between male colour morph and male behaviour. The assumption that the genetic correlation determines morph-dependent offspring survival importantly reduces the likelihood that such complex population dynamics will evolve and alternative scenarios may explain the observed survival selection.In this follow-up project we will therefore experimentally investigate the determinants of the observed survival selection on maturing offspring. More specifically, we will investigate whether trans-generational competition among males is the main determinant and what type of behaviours lead to the observed competition. The project will thus investigate key-determinants of the observed RPS-dynamics, which will allow understanding the likelihood with which such complex dynamics will evolve.