TY - JOUR
T1 - Thermal adaptation of entomopathogenic nematodes
T2 - Niche breadth for infection, establishment, and reproduction
AU - Grewal, Parwinder S.
AU - Selvan, Sen
AU - Gaugler, Randy
N1 - Funding Information: Acknowledgements--We thank E. E. Lewis and J. F. Campbell for comments on the manuscript, Dr Ramon Georgis (Biosys, Palo Alto, CA) for providing cultures of S. riobravis, H. megidis and the Argentina strain of S. feltiae, Dr Richard Jansson (University of Florida, Homstead, FL) for Jam50 strain of Steinernema sp., and Ecogen Inc., Langhorne, Pennsylvania, for funding the research. This publication is New Jersey Agricultural Experiment Station Publication No. D-08255-15-93, supported by state funds and the U.S. Hatch Act.
PY - 1994/8
Y1 - 1994/8
N2 - 1. 1. We determined thermal niche breadths for infection, establishment, and reproduction of twelve species and strains of entomopathogenic nematodes collected from diverse climatic regions 2. 2. Steinernema riobravis infected Galleria mellonella (wax moth) larvae at the widest temperature range (10-39°C), whereas S. feltiae at the narrowest (8-30°C). Thermal niche breadt for establishment within hosts was the widest for S. glaseri, (10-37°C) and the narrowest for S. feltiae (8-30°C) 3. 3. Thermal niche breadth for reproduction was widest for S. glaseri (12-32°C) and the narrowest for S. carpocapsae (20-30°C). Steinernema scapterisci (20-32°C), S. riobravis (20-35°C), and Steinernema sp. (20-32°C) were more adapted to warm temperature reproduction, and S. feltiae to cooler temperatures (10-25°C) 4. 4. Although heterorhabditids are endemic to warmer climates, the upper thermal limits and temperature optima for reproduction of Heterorhabditis bacteriophora and H. megidis were cooler than that of some of the steinernematids from South America and the Caribbean 5. 5. Thermal niche breadths did not differ between conspecific populations isolated from different localities, but were different for different species isolated from the same locality 6. 6. We conclude that entomopathogenic nematode species have well-defined thermal niches which may be unaffected by their locality.
AB - 1. 1. We determined thermal niche breadths for infection, establishment, and reproduction of twelve species and strains of entomopathogenic nematodes collected from diverse climatic regions 2. 2. Steinernema riobravis infected Galleria mellonella (wax moth) larvae at the widest temperature range (10-39°C), whereas S. feltiae at the narrowest (8-30°C). Thermal niche breadt for establishment within hosts was the widest for S. glaseri, (10-37°C) and the narrowest for S. feltiae (8-30°C) 3. 3. Thermal niche breadth for reproduction was widest for S. glaseri (12-32°C) and the narrowest for S. carpocapsae (20-30°C). Steinernema scapterisci (20-32°C), S. riobravis (20-35°C), and Steinernema sp. (20-32°C) were more adapted to warm temperature reproduction, and S. feltiae to cooler temperatures (10-25°C) 4. 4. Although heterorhabditids are endemic to warmer climates, the upper thermal limits and temperature optima for reproduction of Heterorhabditis bacteriophora and H. megidis were cooler than that of some of the steinernematids from South America and the Caribbean 5. 5. Thermal niche breadths did not differ between conspecific populations isolated from different localities, but were different for different species isolated from the same locality 6. 6. We conclude that entomopathogenic nematode species have well-defined thermal niches which may be unaffected by their locality.
KW - Heterorhabditidae
KW - Nematoda
KW - Steinernematidae
KW - entomopathogenic nematodes
KW - infection
KW - parasite establishment
KW - reproduction
KW - thermal adaptation
KW - thermal niche breadth
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U2 - https://doi.org/10.1016/0306-4565(94)90047-7
DO - https://doi.org/10.1016/0306-4565(94)90047-7
M3 - Article
VL - 19
SP - 245
EP - 253
JO - Journal of Thermal Biology
JF - Journal of Thermal Biology
SN - 0306-4565
IS - 4
ER -