caa a22 4500 386361819 CHVBK 20180307111918.0 cr unu---uuuuu 161130e198911 xx s 000 0 eng 10.4039/Ent121933-11 doi S0008347X00035835 pii (NATIONALLICENCE)cambridge-10.4039/Ent121933-11 PHEROMONE-BASED AGGREGATION IN ORTHOTOMICUS CAELATUS (EICHHOFF) (COLEOPTERA: SCOLYTIDAE) [Elektronische Daten] Two field experiments were conducted to determine if Orthotomicus caelatus (Eichhoff) was attracted to pine bolts infested with conspecifics and to assess the roles of the sexes in attraction. Traps baited with pine bolts artificially infested with males attracted both males and females, but traps baited with uninfested bolts or bolts with females caught very low numbers of beetles. The addition of females to bolts with males reduced the attraction produced by males in a second experiment. Bolts with males and females did not reduce the attraction produced by other males in adjacent bolts, suggesting that females do not produce a masking pheromone. The pheromone system of O. caelatus is similar to those known for other species in the Ipini in which males initiate gallery construction, produce an attractant, and attract females and opportunistic males. Preliminary gas chromatographic analyses of extracts of hindguts and frass from males boring on pine bolts suggested the presence of ipsdienol and ipsenol, two commonly occurring pheromones in other species of the Ipini. The pheromone system of O. caelatus is discussed with regard to the complexity of the pine bark beetle guild in the southeastern United States. Copyright © Entomological Society of Canada 1989 Phillips Thomas W. Department of Entomology and Nematology, University of Florida, Gainesville, Florida, USA 32611-0562 Atkinson Thomas H. Department of Entomology and Nematology, University of Florida, Gainesville, Florida, USA 32611-0562 Foltz John L. Department of Entomology and Nematology, University of Florida, Gainesville, Florida, USA 32611-0562 The Canadian Entomologist Cambridge University Press 121/11(1989-11), 933-940 0008-347X 121:11<933 1989 121 TCE https://doi.org/10.4039/Ent121933-11 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent121933-11 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Phillips Thomas W. Department of Entomology and Nematology, University of Florida, Gainesville, Florida, USA 32611-0562 NATIONALLICENCE 700 1- Atkinson Thomas H. Department of Entomology and Nematology, University of Florida, Gainesville, Florida, USA 32611-0562 NATIONALLICENCE 700 1- Foltz John L. Department of Entomology and Nematology, University of Florida, Gainesville, Florida, USA 32611-0562 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 121/11(1989-11), 933-940 0008-347X 121:11<933 1989 121 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge