caa a22 4500 397570791 CHVBK 20180308164840.0 cr unu---uuuuu 161202e19960401xx s 000 0 eng 10.1093/ee/25.2.460 doi (NATIONALLICENCE)oxford-10.1093/ee/25.2.460 Desiccation Resistance in Populations of the Red Imported Fire Ant (Hymenoptera: Formicidae) [Elektronische Daten] [Sherman A. Phillips, Rafael Jusino-Atresino, Harlan G. Thorvilson] The red imported fire ant, Solenopsis invicta Buren, is rapidly expanding its range throughout Texas and is even surviving in areas once thought inhospitable. Therefore, the objective of this study was to determine if populations of red imported fire ants from western Texas are more resistant to desiccation than are those from eastern Texas. Colonies were sampled from 6 different locations on a southeast to northwest transect through Texas. Minor workers from each location were subjected to low humidity, and the mean LT50s from among locations were compared to determine differences in desiccation tolerance among populations. Results show that the LT50 of minor workers collected in far northwestern Texas is ≍7 h; whereas, that of minor workers from far southeastern Texas is significantly less (P < 0.05) at ≍5.5 h. In addition, these LT50s are significantly different (P < 0.05) from the other 4 locations sampled from the middle of the transect. Therefore, workers from western Texas (xeric conditions) are less prone to desiccation than are those from far eastern Texas (moist conditions), even though minor workers tested from eastern Texas were significantly larger than all others along the transect. These results indicate that the red imported fire ant may be able to adapt and expand its range at a rate faster than initially suggested. © 1996 Entomological Society of America Physiological and Chemical Ecology nationallicence Solenopsis invicta nationallicence desiccation nationallicence water loss nationallicence xeric nationallicence Phillips Sherman A. College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock, TX 79409-2134 and Department of Natural Sciences, Inter-American University of Puerto Rico, Aguadilla, PR 00605 aut Jusino-Atresino Rafael College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock, TX 79409-2134 and Department of Natural Sciences, Inter-American University of Puerto Rico, Aguadilla, PR 00605 aut Thorvilson Harlan G. College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock, TX 79409-2134 and Department of Natural Sciences, Inter-American University of Puerto Rico, Aguadilla, PR 00605 aut Environmental Entomology Oxford University Press 25/2(1996-04-01), 460-464 0046-225X 25:2<460 1996 25 ee https://doi.org/10.1093/ee/25.2.460 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/ee/25.2.460 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Phillips Sherman A. College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock, TX 79409-2134 and Department of Natural Sciences, Inter-American University of Puerto Rico, Aguadilla, PR 00605 aut NATIONALLICENCE 700 1- Jusino-Atresino Rafael College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock, TX 79409-2134 and Department of Natural Sciences, Inter-American University of Puerto Rico, Aguadilla, PR 00605 aut NATIONALLICENCE 700 1- Thorvilson Harlan G. College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock, TX 79409-2134 and Department of Natural Sciences, Inter-American University of Puerto Rico, Aguadilla, PR 00605 aut NATIONALLICENCE 773 0- Environmental Entomology Oxford University Press 25/2(1996-04-01), 460-464 0046-225X 25:2<460 1996 25 ee Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford