Population Dynamics of Melipotis indomita (Lepidoptera: Noctuidae), an Indigenous Natural Enemy of Mesquite, Prosopis spp.

1990 ◽  
Vol 19 (2) ◽  
pp. 415-422 ◽  
Author(s):  
J. P. Cuda ◽  
C. J. Deloach ◽  
T. O. Robbins
Keyword(s):  
Population Dynamics ◽  
Natural Enemy ◽  
Lepidoptera Noctuidae

Population Dynamics of Corn Earworm Larvae (Lepidoptera: Noctuidae) on Corn in the Lower Rio Grande Valley

1990 ◽  
Vol 19 (2) ◽  
pp. 274-280 ◽  
Author(s):  
J. R. Raulston ◽  
K. R. Summy ◽  
J. Loera ◽  
S. D. Pair ◽  
A. N. Sparks
Keyword(s):  
Population Dynamics ◽  
Rio Grande Valley ◽  
Rio Grande ◽  
Corn Earworm ◽  
Lower Rio Grande Valley ◽  
Lepidoptera Noctuidae ◽  
Lower Rio Grande

scholarly journals Population dynamics of rice leaffolders (Lepidoptera: Pyralidae) and their natural enemies in irrigated rice in the Philippines

1999 ◽  
Vol 89 (5) ◽  
pp. 411-421 ◽  
Author(s):  
J. de Kraker ◽  
A. van Huis ◽  
K.L. Heong ◽  
J.C. van Lenteren ◽  
R. Rabbinge
Keyword(s):  
Population Dynamics ◽  
Natural Enemies ◽  
Natural Enemy ◽  
Survival Rates ◽  
The Philippines ◽  
Cnaphalocrocis Medinalis ◽  
Irrigated Rice ◽  
Larval Stages ◽  
Ovipositional Preference ◽  
Rice Leaffolders

AbstractPopulations of rice leaffolders and their natural enemies were studied in eight crops of irrigated rice in Laguna Province, the Philippines. The rice leaffolder complex consisted of three species: Cnaphalocrocis medinalis (Guenée), Marasmia patnalis Bradley and M. exigua Butler. Leaffolder population dynamics were characterized by an egg peak at maximum tillering and a broad larval peak around booting stage. Peak densities ranged from 0.2 to 2.0 larvae per hill. Most larvae originated from immigrant moths and there was no substantial second generation. The seasonal percentage egg parasitism by Trichogramma sp. ranged from 0 to 27%, and percentage larval parasitism from 14 to 56%. The braconid Macrocentrus philippinensis Ashmead was the most commonly reared larval parasitoid. Forty natural enemy taxa that may attack rice leaffolders were identified from suction and sweepnet samples: 24 predator taxa and 16 parasitoid taxa. The estimated survival rates from leaffolder egg to larval stages and between larval stages showed large variation between rice crops, but were not clearly correlated with observed levels of parasitism, natural enemy abundance, or natural enemy to leaffolder ratios. It is suggested that the generally low densities of rice leaffolders in Philippine transplanted rice are caused by their ovipositional preference for crops at the maximum tillering stage, allowing for only one generation, and by high immature mortality caused by the abundant and diverse complex of natural enemies.

scholarly journals The population dynamics of three polyphagous owlet moths (Lepidoptera: Noctuidae) and the influence of meteorological factors and ENSO on them

2019 ◽  
Vol 63 (4) ◽  
pp. 308-315 ◽  
Author(s):  
Magaly Fonseca-Medrano ◽  
Alexandre Specht ◽  
Fernando Antônio Macena Silva ◽  
Pollyanna Nunes Otanásio ◽  
Juaci Vitória Malaquias
Keyword(s):  
Population Dynamics ◽  
Meteorological Factors ◽  
Lepidoptera Noctuidae

The effect of cropping landscapes on the population dynamics of the cotton bollwormHelicoverpa armigera(Lepidoptera, Noctuidae) in the northern Xinjiang

2012 ◽  
Vol 32 (24) ◽  
pp. 7925-7931 ◽  
Author(s):  
吕昭智 LV Zhaozhi ◽  
潘卫林 PAN Weilin ◽  
张鑫 ZHANG Xin ◽  
李贤超 LI Xianchao ◽  
张娟 ZHANG Juan
Keyword(s):  
Population Dynamics ◽  
Northern Xinjiang ◽  
Lepidoptera Noctuidae
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