Temperature and altitude modulate feeding attributes of Mexican beetle,Zygogramma bicolorata Pallister on Parthenium hysterophorus |
| |
| Affiliation: | 1. Department of Agronomy, Faculty of Agriculture, University of Jaffna, Kilinochchi, Sri Lanka;2. Department of Crop Science, Faculty of Agriculture, University of Peradeniya, Sri Lanka;1. The University of Sydney, School of Life and Environmental Sciences, Camden 2570, Australia;2. School of Agriculture & Food Sciences, The University of Queensland, Gatton 4343, Australia;3. Biosecurity Queensland, Department of Agriculture and Fisheries, Ecosciences Precinct, Boggo Road, Dutton Park 4102, Australia;4. School of Biological Sciences, The University of Queensland, St Lucia 4072, Australia;1. Department of Botany, Panjab University, Chandigarh, India;2. The Centre for Crop Science, Queensland Alliance for Agriculture and Food Innovation (QAAFI) and School of Agriculture and Food Sciences (SAFS), The University of Queensland, Gatton, QLD, Australia;3. Department of Environment Studies, Panjab University, Chandigarh, India;1. Department of Biology, Barry University, 11300 NE Second Avenue, Miami Shores, FL 33161-6695, USA;2. Department of Physiology, University of Illinois, 524 Burrill Hall, 407 S. Goodwin Avenue, Urbana, IL 61801, USA;3. 17446 SW 33rd Court, Miramar, FL 33029, USA |
| |
| Abstract: | Zygogramma bicolorata Pallister (Coleoptera: Chrysomelidae) is an effective biocontrol agent of Parthenium hysterophorus L. which is an alien invasive herbaceous weed with a pan-tropical distribution. The present study aimed to assess the effects of temperature and altitude on feeding attributes (consumption rate, conversion efficiency and growth rate) of adults from the wild populations of Z. bicolorata inhabiting India and Nepal. Results revealed that adults inhabiting areas of low temperature (24°C ‒ 25°C) and high altitude (415 m ‒1400 m) were large and had higher food consumption rates. In contrast, those inhabiting areas of high temperature (34°C ‒ 36°C) and low altitude (81 m ‒ 229 m) were smaller and had higher food utilization efficiencies. In all the eco-climatic regions, females were larger than males and had higher feeding attributes than their counterparts. Temperature between 27°C and 30°C was found optimal for Z. bicolorata adults to convert and utilize the food biomass to body mass. Above the optimal temperature the feeding attributes decreased. Present results suggest that there exists a possibility for decrease in body size, and thereby weed biocontrol efficiency of Z. bicolorata adults with an increase in temperature due to global climate change. |
| |
| Keywords: | Weed biocontrol Altitude Temperature Global climate change |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
