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By Emily Fischbach

Sexual Selection in Jumping Spiders. By Emily Fischbach. About Jumping Spiders

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By Emily Fischbach

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  1. Sexual Selection inJumping Spiders By Emily Fischbach About Jumping Spiders Jumping spiders (Family:Salticidae) are most noted for their unique eyes and complex courtship behavior. While most spiders have simple eyes and poor vision, jumping spiders have acute vision (Drees, 1952). The family Salticidae is best known for elaborate courtship dances and ornamentation. It is hypothesized that intersexual selection (female mate choice) is responsible for shaping the evolution of salticid’s courtship (the response of males with more complex dances and more ornamentation; Peckham&Peckham, 1890). The evidence supporting this hypothesis is shown in the following examples. H. pugillis H. pyrrithrix “Adult Male Habronattuspugillis Jumping Spider” By Thomas Shahan from flickr.com, Creative Commons Attribution “Arachtober the Twenty-Eighth, Part the Second” By mschmidt62 from flickr.com, Creative Commons Attribution • Findings suggest that females have a bias for complex and/or novel forms of seismic signals. • Comparison of female Habronattuspugillis preference between foreign vs. local males with manipulation of seismic cues (Elias et al 2006). • Lack of red facial coloration reduced male courtship success. Blocking of red facial coloration in Habronattuspyrrithrixreduced a male's ability to approach a female and consequently courtship success, but only in the sun (Taylor&McGraw, 2013). C.umbratica M. volans “Cosmophasisumbratica m 6mm NTU P4092205” By Pen Aranea from flickr.com, Creative Commons Attribution “_MG_2945 (4) peacock spider Maratusvolans” Photo by Jurgen Otto from Flickr.com, Creative Commons Attribution • Findings show evidence that UV reflectance may be important sexual signals in jumping spiders. • UV and human-visible wavelength analyzed using reflectance spectrometry in Cosmophasisumbratica(Lim&Lee, 2005) • Adaptive significance of how/why multi-model signaling works is a current topic of research. • Maratusvolanshas brightly color opis-thosomal flaps, complex dances, and vibratory signals (Girard, 2011). Citations Spider Image at Top: Male Jumping Spider (Naphryspulex), Image by sankax at flickr.com ,Creative Commons Attribution Drees, O. 1952. Untersuchungenliber die angeborenenVerhaltensweisenbeiSpringspinnen (Salticidae). Z. Tierpsychol. 9:169-207. Peckham, G. W. & Peckham, E. G. 1890: Additional observations on sexual selection in spiders of the family Attidae, with some remarks on Mr. Wallace's theory of sexual ornamentation. Occ.Pap.Wis.nat.Hist.Soc. 1: 117-151. Elias, et al. 2006. "Female Preference for Complex/novel Signals in a Spider." Behav Ecol. 17:765–771 Taylor, LA & McGraw,KJ. 2013. Male ornamental coloration improves courtship success in a jumping spider, but only in the sun. Behavioral Ecology, first published online February 21, 2013, doi:10.1093/beheco/art011 Lim, M. L. M. & Li,D. 2006. Extreme ultraviolet sexual dimorphism in jumping spiders (Araneae: Salticidae). Biological Journal of the Linnean Society. Vol.89, Issue 3:397–406  Girard, MB. Kasumovic,MM. Elias,DO.2011. Multi-Modal Courtship in the Peacock Spider, Maratusvolans (O.P.-Cambridge, 1874). PLoS ONE 6(9): e25390. doi:10.1371/journal.pone.0025390

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