scholarly journals The roles and interactions of reproductive isolation mechanisms in fall armyworm (Lepidoptera: Noctuidae) host strains

2010 ◽  
Vol 35 ◽  
pp. 105-118 ◽  
Author(s):  
ASTRID T. GROOT ◽  
MELANIE MARR ◽  
DAVID G. HECKEL ◽  
GERHARD SCHÖFL
Keyword(s):  
Reproductive Isolation ◽  
Fall Armyworm ◽  
Reproductive Isolation Mechanisms ◽  
Lepidoptera Noctuidae ◽  
Isolation Mechanisms ◽  
Host Strains

scholarly journals Assessing the Use of Wing Morphometrics to Identify Fall Armyworm (Lepidoptera: Noctuidae) Host Strains in Field Collections

2019 ◽  
Vol 113 (2) ◽  
pp. 800-807
Author(s):  
Kira L Nagoshi ◽  
Sandra A Allan ◽  
Robert L Meagher
Keyword(s):  
Host Plants ◽  
Strain Differences ◽  
Fall Armyworm ◽  
Growth Patterns ◽  
Western Hemisphere ◽  
Anatomical Landmarks ◽  
Wing Morphology ◽  
Linear Discriminant ◽  
Lepidoptera Noctuidae ◽  
Host Strains

Abstract The fall armyworm (Spodoptera frugiperda) (J. E. Smith) (Lepidoptera: Noctuidae), a major agricultural pest in the Western Hemisphere, has recently become established in Africa and Asia. This highly polyphagous species has potential to economically harm multiple crops. Contributing to this host range are two fall armyworm populations historically called ‘host strains’ that differ in host specificity. Understanding behaviors of the two strains is crucial to effective management of this pest. A major difficulty in such studies is that strains have long been considered morphologically indistinguishable, with molecular markers the only reliable means of identification. However, studies of fall armyworm in Colombia reported strain differences in wing morphology sufficiently large to potentially provide a more economical alternative method to determine strain. This study tested whether a similar phenotypic difference was present in Florida populations using geometric morphometric analysis of 15 anatomical landmarks on forewings of 182 specimens from three habitats associated with different host plants. Principle component and linear discriminant analyses identified significant differences in wing size and shape in comparison of strains from different habitats, but not between strains within the same habitat. Data indicate that apparent strain distinctions in wing phenotype are most likely a secondary consequence of differences in developmental growth patterns on different host plants combined with strain-biased host choice. Furthermore, Florida specimens showed much larger phenotypic overlap than observed for strains from Colombia. Together these findings suggest that wing morphology is probably not a reliable indicator of strain identity in field populations where different host plants are available.

scholarly journals Toward the elucidation of reproductive isolation mechanisms in plants: diversity and universality

2019 ◽  
Vol 21 (1) ◽  
pp. 75-80
Author(s):  
Takahiro Tezuka ◽  
Katsuyuki Ichitani ◽  
Yuichi Matsumoto ◽  
Hai He ◽  
Tetsu Kinoshita ◽  
...  
Keyword(s):  
Reproductive Isolation ◽  
Reproductive Isolation Mechanisms ◽  
Isolation Mechanisms

Oviposition Choice of Two Fall Armyworm (Lepidoptera: Noctuidae) Host Strains

2011 ◽  
Vol 24 (5) ◽  
pp. 337-347 ◽  
Author(s):  
Robert L. Meagher ◽  
Rodney N. Nagoshi ◽  
Charles J. Stuhl
Keyword(s):  
Fall Armyworm ◽  
Oviposition Choice ◽  
Lepidoptera Noctuidae ◽  
Host Strains

scholarly journals Captures and Host Strains of Fall Armyworm (Lepidoptera: Noctuidae) Males in Traps Baited with Different Commercial Pheromone Blends

2013 ◽  
Vol 96 (3) ◽  
pp. 729-740 ◽  
Author(s):  
Robert L. Meagher ◽  
Rod N. Nagoshi ◽  
J. Scott Armstrong ◽  
Jerome Niogret ◽  
Nancy D. Epsky ◽  
...  
Keyword(s):  
Fall Armyworm ◽  
Pheromone Blends ◽  
Lepidoptera Noctuidae ◽  
Host Strains

Using Stable Isotope Analysis to Examine Fall Armyworm (Lepidoptera: Noctuidae) Host Strains in a Cotton Habitat

2007 ◽  
Vol 100 (5) ◽  
pp. 1569-1576 ◽  
Author(s):  
R. N. Nagoshi ◽  
J. J. Adamczyk ◽  
R. L. Meagher ◽  
J. Gore ◽  
R. Jackson
Keyword(s):  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Fall Armyworm ◽  
Lepidoptera Noctuidae ◽  
Host Strains
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