Seasonal dynamics and spatial distribution pattern of Parapoynx crisonalis (Lepidoptera: Crambidae) on water chestnuts

Parapoynx crisonalis (Walker, 1859) (Lepidoptera: Crambidae) is a major pest of aquatic vegetables and aquatic landscape plants. It has been responsible for causing considerable economic damage to water chestnut (Trapa natans) plants. In the Changsha vicinity of China, P. crisonalis has five generat...

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Bibliographic Details
Published in:PloS one 2017-09, Vol.12 (9), p.e0184149-e0184149
Main Authors: Li, Ni, Chen, Qi, Zhu, Jie, Wang, Xing, Huang, Jian-Bin, Huang, Guo-Hua
Format: Article
Language:English
Subjects:
Adults
Analysis
Animal behavior
Animal Distribution
Animals
Annual variations
Aquatic plants
Biology
Biology and Life Sciences
Chestnut
Chestnuts
China
Climate
Climatic conditions
Crambidae
Earth Sciences
Ecology
Eggs
Environment
Environmental effects
Foraging behavior
Heterogeneity
Humidity
Laboratories
Leaves
Lepidoptera
Lythraceae
Overwintering
Parapoynx crisonalis
Physiological aspects
Plant diseases
Population
Population Dynamics
Precipitation
Precipitation (Meteorology)
Rainfall
Seasonal distribution
Seasons
Spatial distribution
Temperature
Trapa natans
Vegetables
Water damage
Weather
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Summary:Parapoynx crisonalis (Walker, 1859) (Lepidoptera: Crambidae) is a major pest of aquatic vegetables and aquatic landscape plants. It has been responsible for causing considerable economic damage to water chestnut (Trapa natans) plants. In the Changsha vicinity of China, P. crisonalis has five generations a year. Populations of P. crisonalis were relatively low in April and began to rapidly rise at the beginning of May. At the end of July and early August, the population dropped dramatically. A rebound occurred at the end of August and early September, which was referred to as the second population peak. From then, until early November, the P. crisonalis population steadily diminished in preparation for overwintering. The primary factors influencing the seasonal dynamics of P. crisonalis were the climatic conditions, especially the temperature, and secondarily precipitation. Between May and October, the P. crisonalis adults were evenly distributed in the pond. In May and June, the eggs of P. crisonalis were present in an aggregate distribution, due to the effects of environmental heterogeneity. In July and August, however, they were found to be in a uniform distribution.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0184149