FLIGHT ACTIVITY AND FATTY ACID UTILIZATION IN <i>MYTHIMNA SEPARATA</i> (WALKER) MOTHS*

Wang, Zongshun; Ouyang, Ying‐Chun

doi:10.1111/j.1744-7917.1995.tb00061.x

Cited by 4 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The decline in the NFAs OL and PA, as well as the δ 13 C value of the fat body, as a function of flight duration in 5-day old moths supports the idea that adult-derived FAs are preferentially used by the true armyworm to fuel flight, as reported for other insects (Schneider and Dorn, 1994;Wang and Ouyang, 1995;Murata and Tojo, 2002;Sakamoto et al, 2004;Levin et al, 2017). Furthermore, the fact that following flight the levels of LA and ALA in the fat body decline in moths reared under summer conditions but not in those reared under fall conditions (Tables 2, 3) support our hypothesis of differential FA allocation under different environmental conditions.…”

Section: Discussionsupporting

confidence: 74%

“…Min et al (2004) reported a post flight increase in JH titers for migratory grasshoppers, and Cusson et al (1990) reported increased JH production when TAW adults experienced an increase in ambient temperature. Thus, if increasing body temperature following flight resulted in higher JH levels and led to higher consumption of resources, it would result in greater changes in levels of OL compared with the other FAs, as it is one of the most readily used fuel sources in insects (Schneider and Dorn, 1994;Wang and Ouyang, 1995;Tomcala et al, 2010).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Effect of rearing conditions on fatty acid allocation during flight in nectivorous lepidopteran Mythimna unipuncta

2023

View full text Add to dashboard Cite

Insect species that are nectivorous as adults acquire essential fatty acids almost exclusively from host plants during larval development. Thus, as essential fatty acids are important for a number of different biological processes, adult allocation of this limited resource may result in important trade-offs. Most lepidopteran species that migrate do so as sexually immature adults, so essential fatty acids used for migratory flight would not be available for subsequent reproduction. Using the true armyworm, Mythimna unipuncta, as a model system we analyzed fat body samples to test the hypothesis that environmental cues would influence the use of essential fatty acids during migratory flight. We used diets manipulated isotopically to trace origins and use of stored lipids and used chromatographic analyses to determine fatty acid composition. In the first experiments, 5-day old moths that had been reared in summer or fall (migratory) conditions and were force flown for different lengths of time (0–6 h) after which samples of the fat body were analyzed. Rearing conditions did not affect fatty acid loading however patterns of use during flight differed with essential fatty acids being conserved under fall but not summer conditions. As migratory flight can take several days, we repeated the experiment when 5-day old moths were flown for 8 h each day for up to 5 days. Some moths were provided access to sugar water after each flight while others were only given water or only given sugar water once. When sugar water was readily or sporadically available, moths reared under fall conditions conserved their essential fatty acids indicating that the environmental cues responsible for the onset of migratory flight result in physiological changes that modify lipid use. However, when moths had only water, the essential fatty acids were not conserved, highlighting the importance of nectar availability at stopovers for the conservation essential fatty acids during migration. Isotopic analysis of the moth fat body indicated a large contribution of adult-derived diet to lipids used as fuel. The implications of using isotopic approaches to other flight studies and future research on differential resource allocation in winged monomorphic migratory insects are discussed. Summary statement: Isotopic tracing methods and gas chromatography were used to demonstrate that environmental cues can impact patterns of fatty acid use in true armyworm moths. In particular, essential fatty acids are conserved during migratory flight. However, availability of adult food sources will determine the degree to which essential fatty acids are conserved.

show abstract

Section: Discussionsupporting

confidence: 74%

mentioning

confidence: 99%

Effect of rearing conditions on fatty acid allocation during flight in nectivorous lepidopteran Mythimna unipuncta

2023

View full text Add to dashboard Cite

show abstract

Essential and nonessential fatty acid composition and use in overwintering monarch butterflies

Anparasan,

Pilecky,

Ramirez

et al. 2024

J Comp Physiol A

View full text Add to dashboard Cite

Nutritional Resources Regulate the Reproduction or Migration of Spodoptera frugiperda through Juvenile Hormones and 20-Hydroxyecdysone

Zhang,

Zheng,

Zhu

et al. 2024

J. Agric. Food Chem.

View full text Add to dashboard Cite

Spodoptera frugiperda is a significant agricultural pest that migrates annually based on the growth stages of its host plants. However, the role of host plant growth stages in the residency or migration of S. frugiperda remains unclear. We allowed S. frugiperda to feed on maize leaves and seeds, and results showed that maize seeds had higher amino acids, carbohydrates, and triglyceride (TG). S. frugiperda that fed on seeds had longer adult stages; larger wings; higher TG, juvenile hormone II (JH II), and JH III; and more developed flight muscles, indicating tendencies toward migration. Interestingly, maize leaves were richer in sterols. S. frugiperda that fed on leaves exhibited longer larval stages, higher 20-hydroxyecdysone (20E) and JH I, faster egg maturation, and earlier oviposition, suggesting tendencies toward residency. These findings suggest that the nutritional composition of host plants influences S. frugiperda for migration or reproduction, offering new insights into its invasion and establishment patterns.

show abstract

FLIGHT ACTIVITY AND FATTY ACID UTILIZATION IN MYTHIMNA SEPARATA (WALKER) MOTHS*

Cited by 4 publications

References 10 publications

Effect of rearing conditions on fatty acid allocation during flight in nectivorous lepidopteran Mythimna unipuncta

Effect of rearing conditions on fatty acid allocation during flight in nectivorous lepidopteran Mythimna unipuncta

Essential and nonessential fatty acid composition and use in overwintering monarch butterflies

Nutritional Resources Regulate the Reproduction or Migration of Spodoptera frugiperda through Juvenile Hormones and 20-Hydroxyecdysone

Contact Info

Product

Resources

About