Lifetable study of fall army worm <i>Spodoptera frugiperda</i> (J. E. Smith) on maize

Ashok, K. R.; Kennedy, J.S.; Geethalakshmi,; Jeyakumar, P.; Sathiah, N.; Balasubramani,

doi:10.5958/0974-8172.2020.00143.1

Cited by 17 publications

(32 citation statements)

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“…Finally, the hypothetical female population in the F 2 generation was found to be higher in T30 (17468.20) than T25 (14, 099.18) was reported (Table 5). Similar observations were reported earlier by Ashok et al, (2020) by evaluating adult longevity, oviposition period, fecundity and fertility using 30 pairs of FAW at 27 ºC. They reported adult longevity of 12.6 days and 11.1 days for females and males, respectively.…”

Section: Biology Of Fawsupporting

confidence: 90%

“…In each cage, the pre oviposition, oviposition, and post oviposition periods, number of eggs per day were recorded at daily intervals until the death of the female while oviposition substrate was replaced on a daily. Then the number of female birth (mx) was estimated by assuming the 1:1 sex ratio as the number of eggs/day divided by two (Ashok et al, 2020).…”

Section: Determination Of Oviposition Fecundity and Longevity Of Fawmentioning

confidence: 99%

“…The longevity of each stage was varying different day intervals viz, 2 days for egg hatching, larval longevity (12 days), pupal (7 days) and adult longevity (14 days) (Tendeng et al, 2019). However, several authors reported various longevity for different stages of FAW according to the various climatic conditions (Ashok et al, 2020;Plessis et al, 2020). As per the biological parameters of FAW at 25°C Kalyan et al, (2020) reported that the larval, pupal, pre oviposition, oviposition and post-oviposition period were 16.97, 8.96, 3.30, 16.97, 8.96, 3.47, 2.96 and 6.13 days respectively but those durations were in disagreement with present ndings.…”

Section: Biology Of Fawmentioning

confidence: 99%

“…In ecological perspective, life tables are useful resources for evaluating, predicting and comprehending insect population development rates (Ashok et al, 2020). However, recent publications have focus on revealing the impact of FAW in selected speci c temperatures, though the impact of various temperature has not been revealed.…”

Section: Introductionmentioning

confidence: 99%

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

Kumara

AMKG

GKMMK

et al. 2022

Preprint

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Fall armyworm Spodoptera frugiperda Smith (Lepidoptera: Noctuidae) (FAW) is one of the devastating polyphagous pests having a wide range of host plants that contribute substantial losses to crop cultivation. For such pests, temperatures exert a significant impact on biology, distribution, and abundance. Hence the present study was executed with the aims of evaluating the effects of different temperatures on the growth and development of fall armyworm. FAW larvae collected from the infested field and were reared in three different temperatures regimes viz. 25±1°C (T25), 30±1°C (T30) and 35 ±1°C (T35) incubator provided with 12:12 photo period. Life table and fecundity tables were calculated using growth parameters. The results indicated that the mean duration of each stage of lifecycle at three different temperatures were significantly different from each other. The accumulated mortality at the adult stage was 95%, 61% and 64% at T35, T30 and T25 respectively. The net reproductive rate (Ro) was 132.17, the average period of generation time (Tc) was less in T30 (32.31) with the daily finite rate of increase in number (λ) was 1.1702 females/female/day and a population doubling time of 3.004 days. Similarly, the intrinsic rate of natural increase in number (rm) was 0.1511 females/female/ day and hypothetical female population in the F2 generation was found to be higher at T30 (17468.20) thus the results indicated that T30 favors the growth and development of FAW compared to the other tested temperatures. Our findings could be useful for the implication in pest management and forecasting.

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Section: Biology Of Fawsupporting

confidence: 90%

Section: Determination Of Oviposition Fecundity and Longevity Of Fawmentioning

confidence: 99%

Section: Biology Of Fawmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Kumara

AMKG

GKMMK

et al. 2022

Preprint

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“…However, the shorter pre-oviposition period of S. frugiperda that originated from caterpillars fed on cotton and corn leaves, than the 3.7 and 3.9 days for this insect on the IAC 17 cotton leaves [ 65 ] and CO6 corn leaves [ 66 ], under similar temperature and relative humidity, indicates the effect of cotton cultivars on these parameters. This may explain the shorter oviposition period of S. frugiperda females that originated from caterpillars fed with corn leaves than the 6.1 days of this insect with the CO6 corn [ 66 ], under the same conditions, and also the similar longevity but lower number of females of this insect that originated from caterpillars fed on cotton leaves and corn, respectively, than the nine days from the IAC 17 cotton leaves [ 65 ] and the 12.6 days with the CO6 corn [ 66 ] for this insect, under the same conditions. This also explains the shorter longevity of males with cotton and corn leaves, than the nine days with the IAC 17 cotton [ 65 ] and the 11.1 days with the corn CO6 [ 66 ].…”

Section: Discussionmentioning

confidence: 99%

Development, Survival and Reproduction of Spodoptera frugiperda (Lepidoptera: Noctuidae) Fed an Artificial Diet or on Cotton, Castor Bean and Corn Leaves

Ramos

Lima

Albuquerque

et al. 2022

Insects

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The polyphagy of Spodoptera frugiperda (Lepidoptera: Noctuidae) renders its control difficult because variations in the phenology of host plants grown in different seasons of the year and near each other can facilitate the movement of this pest between crops. The objective of this work was to examine certain biological characteristics of S. frugiperda fed on an artificial diet or on cotton, castor bean, or corn leaves. The experimental design was in randomized blocks, with four treatments represented by S. frugiperda caterpillars fed an artificial diet (T1) or pieces of cotton (T2), castor bean (T3) or corn (T4) leaves with five replications (five caterpillars per replication). The duration and survival of the egg, larva, pre-pupa, pupa and egg-adult period and the reproductive characteristics of this insect were determined. The survival, development and reproduction data of S. frugiperda originated from individuals reared with cotton and castor bean leaves were lower than those fed on corn leaves or an artificial diet. The number of nonviable eggs laid by females originated from caterpillars fed on castor bean leaves was higher than those fed on cotton and corn leaves or an artificial diet. The very higher number of unviable S. frugiperda eggs resulting from castor leaves can reduce outbreaks of this pest in cotton and corn crops after the cultivation of that plant, or by intercropping with this plant, in the main producing regions of Brazil.

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Life table study of Spodoptera frugiperda at different wheat stages and the effect of larval population density on wheat yield

Dong

Zhang

et al. 2023

Pest Management Science

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BackgroundSpodoptera frugiperda is an invasive, widespread agricultural pest in China. However, there have been no reports assessing feeding damage on wheat caused by S. frugiperda. To clarify the fitness and potential damage of S. frugiperda to wheat, this study analyzed the population parameters of S. frugiperda fed on wheat in a laboratory and simulated the potential damage in field conditions.ResultsThe population parameters of S. frugiperda were compared using life tables on wheat at the seedling and adult plant stages. The adult female longevity of S. frugiperda varied from 12.29 days on seedling plants to 16.60 days on adult plants. Egg production was significantly higher when fed on wheat at the seedling stage (646.34 eggs) than when fed on adult plants (495.86 eggs). On wheat at the seedling and adult plant stages, the mean generation times were 35.42 and 38.34 days, respectively, and the intrinsic rates of increase were 0.15 and 0.14, respectively. Spodoptera frugiperda completed development and increased its population in wheat at both plant growth stages. In the field, the effect of different larval densities on the 1000‐kernel weight of wheat was significantly different. An action threshold of 40 larvae per m2 was estimated, and the higher population densities caused a yield loss of 17.7%.ConclusionSpodoptera frugiperda can complete its life cycle on wheat at different stages. Wheat can serve as an alternative host for S. frugiperda. If S. frugiperda reaches 320 larvae per m2 density during wheat growth, it will cause yield loss exceeding 17%. © 2023 Society of Chemical Industry.

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Lifetable study of fall army worm Spodoptera frugiperda (J. E. Smith) on maize

Cited by 17 publications

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

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

Development, Survival and Reproduction of Spodoptera frugiperda (Lepidoptera: Noctuidae) Fed an Artificial Diet or on Cotton, Castor Bean and Corn Leaves

Life table study of Spodoptera frugiperda at different wheat stages and the effect of larval population density on wheat yield

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