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Transmission of ice-nucleating active bacteria from a prey reduces cold hardiness of a predator (Araneae: Theridiidae) |
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| Authors: | |
| Institution: | (1) Ecological Laboratory, GE, Miyagi Gakuin Women's University, Sakuragaoka 9-1-1, 981-8557 Aobaku, Sendai, Miyagi, Japan;(2) Hokkaido National Agricultural Experiment Station, 062-8555 Sapporo, Japan;(3) Laboratory of Insect Life-Cycles and Physiology, National Institute of Agrobiological Sciences, Owashi 1-2, 305-8634 Tsukuba, Ibaraki, Japan |
| Abstract: | The influence of ice-nucleating active (INA) bacteria on cold hardiness of the house spider, Achaearanea tepidariorum, was determined by measuring the supercooling point (SCP) of hatchlings given either INA-bacteria-fed or bacteria-free prey (Drosophila melanogaster). Spiders that had eaten INA-bacteria-fed flies showed higher SCPs than those fed on bacteria-free flies. Through feeding, INA bacteria in the prey reduce the cold hardiness of spiders. This fact should be taken into account before using INA agents as a means of pest management. |
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