scholarly journals Antixenosis of bean genotypes to Chrysodeixis includens (Lepidoptera: Noctuidae)

2015 ◽  
Vol 50 (6) ◽  
pp. 450-458 ◽  
Author(s):  
Rafaela Morando ◽  
Edson Luiz Lopes Baldin ◽  
Patrícia Leite Cruz ◽  
André Luiz Lourenção ◽  
Alisson Fernando Chiorato
Keyword(s):  
Free Choice ◽  
Oviposition Preference ◽  
Green Light ◽  
Choice Test ◽  
Choice Tests ◽  
Dark Green ◽  
Soybean Looper ◽  
Lepidoptera Noctuidae ◽  
Light Green ◽  
Chrysodeixis Includens

The objective of this work was to evaluate bean genotypes for resistance to soybean looper (Chrysodeixis includens). Initially, free-choice tests were carried out with 59 genotypes, divided into three groups according to leaf color intensity (dark green, light green, and medium green), in order to evaluate oviposition preference. Subsequently, 12 genotypes with high potential for resistance were selected, as well as two susceptible commercial standards. With these genotypes, new tests were performed for oviposition in a greenhouse, besides tests for attractiveness and consumption under laboratory conditions (26±2ºC, 65±10% RH, and 14 h light: 10 h dark photophase). In the no-choice test with adults, in the greenhouse, the 'IAC Jabola', Arcelina 1, 'IAC Boreal', 'Flor de Mayo', and 'IAC Formoso' genotypes were the least oviposited, showing antixenosis-type resistance for oviposition. In the free-choice test with larvae, Arcelina 4, 'BRS Horizonte', 'Pérola', H96A102-1-1-1-52, 'IAC Boreal', 'IAC Harmonia', and 'IAC Formoso' were the less consumed genotypes, which indicates antixenosis to feeding. In the no-choice test, all genotypes (except for 'IAPAR 57') expressed moderate levels of antixenosis to feeding against C. includens larvae.

scholarly journals Oviposition preference and larval performance of sugarcane borer in eight sugarcane genotypes

2017 ◽  
Vol 41 (4) ◽  
pp. 439-446 ◽  
Author(s):  
Guilherme Vieira Pimentel ◽  
Adriano Cirino Tomaz ◽  
Bruno Portela Brasileiro ◽  
Luiz Alexandre Peternelli ◽  
Márcio Henrique Pereira Barbosa
Keyword(s):  
Free Choice ◽  
Early Stage ◽  
Oviposition Preference ◽  
Choice Test ◽  
Larval Performance ◽  
Foliar Injury ◽  
Breeding Programs ◽  
Sugarcane Borer ◽  
Choice Tests ◽  
Late Stages

ABSTRACT The sugarcane borer Diatraea saccharalis Fabr. (Lepidoptera: Crambidae) is one of the most important pests of sugarcane in the Americas. The purpose of this study was to assess multiple resistance traits in eight sugarcane genotypes against D. saccharalis, including five commercial cultivars and three exotic germplasm with potential to serve as resistance sources against this pest. The oviposition preference was assessed by using both free-choice and non-choice tests. The performance of both early stage larvae feeding on the leaves and late stages larvae feeding within the stalks were also assessed. There were differences among genotypes for number of both eggs and egg cluster in the free-choice test while no differences in non-choice test were observed. There were also differences in survival of early stage larvae feeding on the leaves, foliar injury rating and stalk damage. The genotype IM76-228 was the least preferred for oviposition and it seems that leaf width had some influence on adults’ preference rather than greening of the leaves. IM76-228 and RB867515 causes higher mortality of early stage larvae feeding in the stalks while IM76-228 and RB985523 had lower damage in both leaves and stalks. The genotype IM76-228 was the most resistant to D. saccharalis and could serve as genes sources for resistance in sugarcane breeding programs.

scholarly journals Oviposition Preference of Callosobruchus maculatus (F.) to Common Pulses and Potentiality of Triflumuron as their Protectant

1970 ◽  
Vol 15 ◽  
pp. 83-88 ◽  
Author(s):  
M Saiful Islam ◽  
Fauzia Akhter ◽  
Rezina Laz ◽  
Selina Parween
Keyword(s):  
Free Choice ◽  
Callosobruchus Maculatus ◽  
Oviposition Preference ◽  
Adult Emergence ◽  
Developmental Time ◽  
Egg Laying ◽  
Choice Test ◽  
Egg Hatching ◽  
Choice Tests ◽  
Green Peas

Seeds of black grams, lentils, Bengal grams and green peas were soaked separately in aqueous solutions of Triflumuron at doses of 0.0 (control), 0.5, 1.0, 1.5 and 2.0 ppm. Three day -old adults of Callosobruchus maculatus (F.) (Coleoptera: Bruchidae) were allowed to oviposit on air-dried, treated or untreated pulses of each type and dose in ‘no-choice' and ‘free-choice' tests. Maximum oviposition occurred in Bengal grams (61.00? 0.25) and green peas (33.67? 0.54) in ‘no-choice' and ‘free-choice' tests, respectively. The beetles avoided egg laying on lentils. Maximum egg-hatching occurred on black grams (>90%) in both tests. Minimum developmental time was required in the Bengal grams (30? 0.5 days in ‘no-choice' test and 31.33? 1.23 days in ‘free-choice' test). No adults emerged from green peas, while 54.79% and 86.15% emergence were recorded from untreated black grams in ‘no-choice' and ‘free-choice' tests, respectively. Triflumuron reduced egg-laying significantly in green peas, where hatchability also reduced significantly to 35.99% at 2 ppm in ‘no-choice' test. Percentage of hatching decreased in all pulses with the increasing doses of triflumuron. No adults emerged from the treated green peas in any test, and at 2 ppm the adult emergence declined to < 50% in all pulses. Implications of these results are further discussed.  Key words: Callosobruchus maculatus, Triflumuron, seed protectant, fecundity, hatchability, developmental period, adult emergence   doi: 10.3329/jbs.v15i0.2207 J. bio-sci. 15: 83-88, 2007

scholarly journals Soybean Looper Chrysodeixis includens (Walker) (Insecta: Lepidoptera: Noctuidae)

EDIS ◽  
2018 ◽  
Vol 2018 (1) ◽  
Author(s):  
Ethan T. Carter ◽  
Jennifer Lynn Gillett-Kaufman
Keyword(s):  
Glycine Max ◽  
Life Cycle ◽  
Host Plant ◽  
Economic Importance ◽  
Dark Green ◽  
Soybean Looper ◽  
Lepidoptera Noctuidae ◽  
Chrysodeixis Includens

The soybean looper, Chrysodeixis includens (Walker), is a light to dark green caterpillar which derives its name from its preferred host plant (soybean, Glycine max) and the looping movement it makes while in motion.  Includes: Introduction - Distribution - Description and Life Cycle - Hosts - Damage and Economic Importance - Management - Selected References Also published on the Featured Creatures website at http://entnemdept.ufl.edu/creatures/field/soybean_looper.htm

Field-evolved resistance to chitin synthesis inhibitor insecticides by soybean looper, Chrysodeixis includens (Lepidoptera: Noctuidae), in Brazil

Chemosphere ◽  
2020 ◽  
Vol 259 ◽  
pp. 127499
Author(s):  
Regis F. Stacke ◽  
Daniela N. Godoy ◽  
Venicius E. Pretto ◽  
Fábio M. Führ ◽  
Patricia da S. Gubiani ◽  
...  
Keyword(s):  
Chitin Synthesis ◽  
Synthesis Inhibitor ◽  
Chitin Synthesis Inhibitor ◽  
Soybean Looper ◽  
Lepidoptera Noctuidae ◽  
Chrysodeixis Includens

Soybean Looper (Lepidoptera: Noctuidae) Oviposition Preference Relative to Plant Development in Soybean and Cotton

1992 ◽  
Vol 27 (3) ◽  
pp. 217-223 ◽  
Author(s):  
C. M. Felland ◽  
R. P. Porter ◽  
H. N. Pitre
Keyword(s):  
Plant Development ◽  
Oviposition Preference ◽  
Growing Season ◽  
Pseudoplusia Includens ◽  
Canopy Closure ◽  
Oviposition Choice ◽  
Phenological Stages ◽  
Egg Density ◽  
Soybean Looper ◽  
Lepidoptera Noctuidae

Oviposition choice by soybean looper, Pseudoplusia includens (Walker), of soybean and cotton in two phenological stages was tested in field cages to determine relative oviposition preference for these two crops in a situation similar to early- to mid-season cropping conditions in Mississippi. Moths were released into field cages enclosing four contiguous rows for each of two treatments, and egg density per m of row was determined after the second night. Test 1 paired blooming cotton (planted 25 May) with either blooming (23 June) or vegetative (11 July) soybean. Relative to blooming cotton with 81.1% canopy closure, blooming soybean with 78% canopy closure received 2.6-fold greater oviposition, while vegetative soybean with 41% canopy closure received only 0.24-times the eggs as blooming cotton. Test 2 compared oviposition on the two soybean classes in the absence of cotton. Here, 11.2-fold more eggs were oviposited on blooming soybean than on vegetative soybean. Test 3 paired blooming soybean with either blooming or pre-bloom cotton (planted 23 June). Relative to soybean, the pre-bloom cotton with 68.7% canopy closure received 1.6-fold more eggs than blooming cotton, although neither cotton treatment received as many eggs as blooming soybean. This study suggests that the importance of cotton as a host of soybean looper declines as the crop growing season advances.

scholarly journals Leaf consumption by Diabrotica speciosa (Coleoptera: Chrysomelidade) adults on difFerent host plants

2003 ◽  
Vol 60 (4) ◽  
pp. 789-792 ◽  
Author(s):  
Crébio José Ávila ◽  
José Roberto Postali Parra
Keyword(s):  
Leaf Area ◽  
Host Plants ◽  
Free Choice ◽  
Food Type ◽  
Choice Test ◽  
Multiple Choice Tests ◽  
Circular Pattern ◽  
Leaf Consumption ◽  
Choice Tests ◽  
Diabrotica Speciosa

Studies related to the feeding behavior of pest insects provide information that will aid the development of control tactics. Leaf consumption by Diabrotica speciosa adults fed on bean, corn, potato and soybean was determined in the laboratory under free-choice (multiple or double-choice) and no-choice (confinement) conditions. In the multiple-choice tests leaf circles were randomly arranged in a circular pattern (arena) inside Petri dishes. The degree of preference for the hosts was determined under double-choice conditions, where common bean was considered the standard host and the remaining plants (soybean, potato and corn) as test hosts. In all trials, two Diabrotica speciosa couples were released and maintained within the dish for 24 hours; the leaf area consumed by the insects was determined after this feeding period. Food type (host) influenced leaf area consumption by D. speciosa adults both in free-choice and in no-choice tests (P < 0.05). Under free-choice conditions, the insects preferred to feed on bean rather than on soybean, potato or corn, with no differences among these last three host plants (P > 0.05). As to the no-choice test, the consumption was higher for corn than for potato, probably to compensate the low nutritional quality of the first host.

Elucidating Efficacy of Ingested Positively Charged Zein Nanoparticles Against Noctuidae

2020 ◽  
Vol 113 (6) ◽  
pp. 2739-2744
Author(s):  
Colin A R Bonser ◽  
Xuan Chen ◽  
Carlos E Astete ◽  
Cristina M Sabliov ◽  
Jeffrey A Davis
Keyword(s):  
Pest Management ◽  
Heliothis Virescens ◽  
Tobacco Budworm ◽  
Anticarsia Gemmatalis ◽  
Velvetbean Caterpillar ◽  
Soybean Looper ◽  
Lepidoptera Noctuidae ◽  
Positively Charged ◽  
Chrysodeixis Includens ◽  
Meridic Diet

Abstract A meridic diet overlay bioassay using empty, positively charged zein nanoparticles ((+)ZNP) was performed on soybean looper (Chrysodeixis includens (Walker)), tobacco budworm (Heliothis virescens (F.)), and velvetbean caterpillar (Anticarsia gemmatalis Hübner) (Lepidoptera: Noctuidae). Assessment of effects on mortality and development weights 7 d after ingestion of (+)ZNP were evaluated on larvae of each species. Treatments involved different concentrations, with H. virescens and A. gemmatalis offered 0 and 3,800 ppm (+)ZNP, whereas C. includens colonies were offered 0, 630, 1,260, and 2,520 ppm (+)ZNP. Mortality of A. gemmatalis and C. includens increased after ingestion of the highest (+)ZNP concentrations, while H. virescens neonate mortality was unaffected. Neonate and third-instar weights of A. gemmatalis and C. includens, and neonate H. virescens, decreased with high (+)ZNP concentrations. Following mortality results from A. gemmatalis neonates, a concentration response test was performed using a range of (+)ZNP concentrations. The LC50 for A. gemmatalis was 1,478 ppm. The potential of (+)ZNP as a pest management tactic is discussed.

Inheritance of lambda-cyhalothrin resistance, fitness costs and cross-resistance to other pyrethroids in soybean looper, Chrysodeixis includens (Lepidoptera: Noctuidae)

2020 ◽  
Vol 131 ◽  
pp. 105096 ◽  
Author(s):  
Regis F. Stacke ◽  
Daniela N. Godoy ◽  
Stefany A. Halberstadt ◽  
Eduarda S. Bronzatto ◽  
Tiago Giacomelli ◽  
...  
Keyword(s):  
Cross Resistance ◽  
Fitness Costs ◽  
Lambda Cyhalothrin ◽  
Soybean Looper ◽  
Lepidoptera Noctuidae ◽  
Chrysodeixis Includens

Oviposition preference by the black cowpea moth, Cydia ptychora (Meyrick) (Lepidoptera: Tortricidae), for different varieties of cowpea

1980 ◽  
Vol 70 (3) ◽  
pp. 439-443 ◽  
Author(s):  
A. E. Akingbohungbe ◽  
T. Agbede ◽  
J. I. Olaifa
Keyword(s):  
Host Plant ◽  
Laboratory Tests ◽  
Free Choice ◽  
Oviposition Preference ◽  
Oviposition Preferences ◽  
Cydia Ptychora ◽  
Choice Tests

AbstractIn tests in Nigeria with its principal host-plant, cowpea, Cydia ptychora (Meyr.) showed distinct oviposition preferences. Most of the eggs were laid on the sepals (including their remains on pods) in screenhouse tests involving four varieties. There were distinct differences in the number of eggs laid on different varieties in both no-choice tests with four or five varieties and free-choice tests with 17 varieties in the field. Vita-3 was the preferred variety in the laboratory tests and H 13–1 in the larger comparisons in the field. Fewest eggs were deposited on Tvu 2994 in all tests.

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