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Behav Processes

Title:		Chemical signals might mediate interactions between females and juveniles of Latrodectus geometricus (Araneae: Theridiidae)
Author(s):		Guimaraes Ide C; Cardoso CA; Lima SM; Andrade LH; Antonialli Junior WF;
Address:		"Programa de Pos-Graduacao em Recursos Naturais, Universidade Estadual de Mato Grosso do Sul. Rodovia Dourados/Itahum, Km 12, Caixa Postal 351, 79804-970 Dourados-MS, Brazil. Electronic address: guimaraes_ingrid@yahoo.com.br. Programa de Pos-Graduacao em Recursos Naturais, Universidade Estadual de Mato Grosso do Sul. Rodovia Dourados/Itahum, Km 12, Caixa Postal 351, 79804-970 Dourados-MS, Brazil. Electronic address: claudia@uems.br. Programa de Pos-Graduacao em Recursos Naturais, Universidade Estadual de Mato Grosso do Sul. Rodovia Dourados/Itahum, Km 12, Caixa Postal 351, 79804-970 Dourados-MS, Brazil. Electronic address: smlima@uems.br. Programa de Pos-Graduacao em Recursos Naturais, Universidade Estadual de Mato Grosso do Sul. Rodovia Dourados/Itahum, Km 12, Caixa Postal 351, 79804-970 Dourados-MS, Brazil. Electronic address: luis_hca@yahoo.com.br. Programa de Pos-Graduacao em Recursos Naturais, Universidade Estadual de Mato Grosso do Sul. Rodovia Dourados/Itahum, Km 12, Caixa Postal 351, 79804-970 Dourados-MS, Brazil. Electronic address: williamantonialli@yahoo.com.br"
Journal Title:		Behav Processes
Year:		2016
Volume:		20160305
Issue:
Page Number:		27 - 35
DOI:		10.1016/j.beproc.2016.03.001
ISSN/ISBN:		1872-8308 (Electronic) 0376-6357 (Linking)
Abstract:		"Studies related to communication on spiders show that, as in other invertebrates, the interactions between conspecifics are also made through chemical signals. Therefore, in order to assess whether the composition of cuticular compounds might be involved in interactions that occur during the days after the emergence of juveniles in Latrodectus geometricus, we conducted behavioral and cuticular chemical profiles analysis of females and juveniles of different ages. The results show that females, regardless of their reproductive state, tolerate juveniles of other females with up to 40 days post-emergence and attack juveniles of 80 days post-emergence. Cuticlar chemical analysis shows that while the profile of juveniles is similar to adult's profile, they can remain in the web without being confused with threat or prey. Also, cuticular chemical profiles vary between different populations probably due to genetic and environmental differences or similarities between them. Finally, females in incubation period are able to detect the presence of eggs within any egg sac, but cannot distinguish egg sacs produced by conspecifics from the ones they had produced"
Keywords:		"Age Factors *Animal Communication Animals Behavior, Animal/*physiology Female Pheromones Spiders/*physiology Stimulation, Chemical Brown-widow Cuticular chemical profile Interaction Tolerance;"
Notes:		"MedlineGuimaraes, Ingrid de Carvalho Cardoso, Claudia Andrea Lima Lima, Sandro Marcio Andrade, Luis Humberto da Cunha Antonialli Junior, William Fernnando eng Research Support, Non-U.S. Gov't Netherlands 2016/03/10 Behav Processes. 2016 May; 126:27-35. doi: 10.1016/j.beproc.2016.03.001. Epub 2016 Mar 5"