Association between temperature and life table development of Fall armyworm Spodoptera frugiperda under control condition

Kumara, ADNT Thissa; AMKG, Muhandiram; GKMMK, Ranaweera; MB, Ayeshmanthi; Sarathchandra, SR; Mubarak, A. N. M.

doi:10.21203/rs.3.rs-1295288/v1

Cited by 3 publications

(3 citation statements)

References 17 publications

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“…The ndings of this study align with previous research indicating that temperature signi cantly in uences the development and reproductive traits of insects, including S. exigua (Kumara, 2022;Dai et al, 2017). The inverse relationship between temperature and development period observed in this study is consistent with the general pattern seen in many insect species.…”

Section: Discussionsupporting

confidence: 91%

“…Spodoptera exigua is a member of the Spodoptera genus within the Noctuidae family and is a polyphagous pest that causes signi cant losses in agricultural elds (Kumara, 2022). The pest has a wide range of hosts, including more than 170 plant species from 35 families, and is present in a total of 152 countries across Africa, Asia, Europe, North America, and Oceania (Dai et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Effects of Different Temperatures on the Development of Spodoptera exigua (Hübner) (Noctuidae: Lepidoptera)

DEMİRCİOĞLU

2023

Preprint

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In this study, the effects of different temperature conditions on the development period and adult longevity of Spodoptera exigua were investigated. The results revealed statistically significant differences among the larval period, pupal period, pre-adult period, and adult period. A reverse relationship was observed between temperature and the development periods of larvae, pupae, and adults. The fastest development period was observed at 35°C, while the longest was recorded at 20°C. Furthermore, the number of eggs laid by S. exigua at different temperatures was also examined. Fecundity showed statistically significant differences under different temperature conditions. The highest number of eggs was observed at 35°C, while the lowest was recorded at 20°C. Different temperatures significantly affected the Pre-oviposition, Oviposition, and Post-oviposition periods. As a conclusion, the development period and reproductive rate of S. exigua are related to temperature. Higher temperatures were observed to shorten the development period and increase the reproductive rate of this insect. However, excessively high temperatures were found to hinder the completion of S. Exigua 's generation. These findings provide important information for the management and control of agricultural pests.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Effects of Different Temperatures on the Development of Spodoptera exigua (Hübner) (Noctuidae: Lepidoptera)

DEMİRCİOĞLU

2023

Preprint

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“…From an ecological perspective, life tables are useful resources for evaluating, predicting, and comprehending insect population development rates. However, recent publications have focused on revealing the impact of FAW in selected specific temperatures, though the impact of various temperatures has not been revealed [4,5]. Owing to such limitations, our present study was conducted to evaluate the life tables of FAW on selected three different temperature regimes under laboratory conditions.…”

Section: Introductionmentioning

confidence: 99%

Temperature Effects on the Development of Life Stages of Fall Armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) on Maize

Savadatti,

Ginnu,

Mariyanna

et al. 2023

IJECC

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The effect of temperature on the development of different life stages of Spodoptera frugiperda on maize was assessed at the Centre for Agro Climatic Studies, University of Agricultural Sciences, Raichur at five different constant temperatures viz., 18, 22, 26, 30, and 32°C with a constant relative humidity 65 ± 5% for all the temperatures under growth chambers conditions. Over the temperature studied, the duration of different life stages decreased with a rise in temperature from 18 to 32°C. Where, the duration of the egg stage reduced from 6.00 days (1°C) to 2.00 days (32°C); for the larva from 31.50 to 10.10 days and for the pupae from 30.86 to 6.0 days. The temperature ranges of 26 to 30°C were found to be favourable for growth and development whereas the temperature extremities of 18 and 32°C were not favourable for the growth and development of fall armyworm; at 18°C there was no eclosion and at 32°C there was eclosion of adults but mortality occurred within an hour. The linear regression studies revealed that lower developmental threshold temperatures of 11.50, 11.49, 13.90, and 20.13 and corresponding thermal constants of 43, 236, 149, and 494 degree days were recorded for the incubation period, larval period, pupal period and total life cycle respectively in order. The present study revealed that the upper threshold of 32°C and a lower threshold of 18° C were detrimental to the development of fall armyworm life stages. These estimated thermal thresholds and degree days might be used to predict the fall armyworm activity in the field for devising strategies to manage fall armyworms effectively.

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Linking demography and food consumption to project population growth and damage potential of Spodoptera frugiperda in India

Sharma,

Verma

et al. 2024

Agri and Forest Entomology

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The fall armyworm, Spodoptera frugiperda (J. E. Smith), identified as an invasive pest worldwide, has severely threatened agricultural production and food security in India. To formulate eco‐friendly integrated pest management strategies for S. frugiperda in its new invasive habitat, the basic knowledge about demographic parameters and damage potential of this pest is crucial. The effects of five host crops viz. maize (Zea mays L.), popcorn (Zea mays everta Sturt), sweet corn (Zea mays saccharata Sturt), sorghum (Sorghum bicolor (L.)) and soybean (Glycine max (L.) Merr.) on the development and food consumption of S. frugiperda were examined. Population projection curves based on life table and consumption rates were drawn on different hosts using computer simulation. The pre‐adult development of S. frugiperda was fastest on popcorn (28.02 days), maize (28.04 days) and sweet corn (28.31 days) but slowest on soybean (34.83 days). The highest net reproductive rate, intrinsic rate of increase and finite rate of increase were observed on maize. The feeding potential of S. frugiperda was also highest on maize. The maximum consumption of the sixth larval instar was observed on maize (19470.47 mm2) while lowest on soybean (9033.67 mm2). In the simulation period of 90 days, the fastest growth of S. frugiperda was expected on maize, popcorn and sweet corn while the slowest on soybean. High larval and pupal survival recorded on the non‐maize hosts (sorghum and soybean) reflects that fall armyworm could be an obstacle in their production as well as in the success of maize‐soybean intercropping system. Simulations based on age‐stage, two‐sex life table could be helpful in predicting the most appropriate time for the pesticide application as well as augmentative releases of egg and larval parasitoids for the control of fall armyworm.

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Association between temperature and life table development of Fall armyworm Spodoptera frugiperda under control condition

Cited by 3 publications

References 17 publications

Effects of Different Temperatures on the Development of Spodoptera exigua (Hübner) (Noctuidae: Lepidoptera)

Effects of Different Temperatures on the Development of Spodoptera exigua (Hübner) (Noctuidae: Lepidoptera)

Temperature Effects on the Development of Life Stages of Fall Armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) on Maize

Linking demography and food consumption to project population growth and damage potential of Spodoptera frugiperda in India

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