Interactive effect of diet and temperature on instar numbers in Spodoptera litura, with reference to head capsule width and weight

Mo, Hyoung ho; Jang, Keun Bok; Park, Jung-Joon; Lee, Sung Eun; Shin, Key Il; Lee, Woo Jung; Cho, Kijong

doi:10.1016/j.aspen.2013.08.007

Cited by 8 publications

(6 citation statements)

References 17 publications

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“…This influence of host plants on development of larvae is also backed by our regression analysis ( Table 5 ). These findings are supported by several previous studies, despite the fact that a coordinated comparison of the findings can be difficult as diverse host plants and natural conditions were utilized in the research [ 6 , 42 , 51 , 101 , 107 , 108 ]. A study by [ 7 ] examining the developmental variables on soybean reported the developmental time of S. litura larva as 93.0 d at 15 °C, which was much longer than in this study.…”

Section: Discussionsupporting

confidence: 85%

“…Such predictions require an understanding of the relationship between the insect development rate and temperature, especially with regard to prospective climate change [ 48 , 49 ], and this relationship is often described in temperature-driven phenology models based on the degree-day [ 50 ]. Although there are some studies related to the diet–temperature-mediated development of S. litura in Korea [ 22 , 51 ], there have been no studies examining the interactive effects of temperature and host plants on the developmental phenology and distribution of S. litura on host plants in Korea. This study examined the influence of temperature, host plant, and their interactions on the development of S. litura .…”

Section: Introductionmentioning

confidence: 99%

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Temperature and Host Plant Impacts on the Development of Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae): Linear and Nonlinear Modeling

Maharjan

Hong

Ahn

et al. 2023

Insects

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The tobacco cutworm, Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae), is one of the most serious pests in field crops, vegetables, and ornamentals. Temperatures (15, 20, 25, 27, 30, 35, and 40 °C), host plants (soybean (Glycine max (L.)), maize (Zea mays L.), groundnut (Arachis hypogaea L.) and azuki bean (Vigna angularis (Willd.) Ohwi & H. Ohashi,), and the artificial diet-dependent developmental parameters and survival of S. litura were examined in this study. Stage-specific parameters such as threshold development temperature (LDT) and thermal constant (K) (Degree day (DD)) were determined by linear and nonlinear models (Sharpe–Schoolfield–Ikemoto), respectively. The total developmental time (egg–adult) decreased with increasing temperature on host plants and with an artificial diet. The total immature developmental time varied from 106.29, 107.57, 130.40, 111.82, and 103.66 days at 15 °C to 22.47, 21.25, 25.31, 18.30, and 22.50 days at 35 °C on soybean, maize, groundnut, azuki bean, and artificial diet, respectively. The LDT for the total immature completion was 7.50, 9.48, 11.44, 12.32, and 7.95 °C on soybean, maize, groundnut, azuki bean, and artificial diet, respectively. The K for the total immature completion was 587.88, 536.84, 517.45, 419.44, and 586.95 DD on soybean, maize, groundnut, azuki bean, and artificial diet, respectively. Temperature and host plant interaction also influenced the longevity and survival of adults. The findings of this study can be used to predict the number of generations, spring emergence, and population dynamics of S. litura. The nutrient content analysis of the host plants is discussed in terms of the developmental patterns of S. litura.

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Section: Discussionsupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Temperature and Host Plant Impacts on the Development of Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae): Linear and Nonlinear Modeling

Maharjan

Hong

Ahn

et al. 2023

Insects

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“…Mo et al . () reported 52% of Spodoptera litura larvae pupated after six instars, with the remainder having seven instars when reared at 30 °C on perilla. In the present study, the total larval duration of A. aeneociliella with seven‐instar was significantly longer than that with six‐instar larvae at different temperatures, although the adult longevities were shorter (Table ).…”

Section: Discussionmentioning

confidence: 99%

Temperature‐dependent demography ofAgriphila aeneociliella(Lepidoptera:Crambidae), a new insect pest of wheat inChina

Chi

Zheng

Liang

et al. 2016

Agri and Forest Entomology

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1 Agriphila aeneociliella (Eversmann) (Lepidoptera: Crambidae) was newly reported in China in 2010. Its larvae severely damage wheat in early spring and cause substantial economic losses in wheat crops. 2 The present study involves a detailed study of the demography of A. aeneociliella based on the age-stage, two-sex life table. The developmental threshold and the effective accumulated temperature have been calculated for each developmental stage. 3 Individuals were found to have either six or seven instars, with the percentage of seven-instar larvae increasing at higher temperatures. 4 The total pre-adult development time ranged from 119.67 days at 25 ∘ C to 147.26 days at 18 ∘ C. The highest pre-adult survival rate was 72.60% at 18 ∘ C, whereas the highest mean fecundity was 495.53 eggs per female at 25 ∘ C. The highest growth rates (r = 0.0368 day −1 , = 1.0375 day −1 ) were observed at 23 ∘ C, whereas the shortest mean generation time (T = 127.67 days) occurred at 25 ∘ C. No significant differences were found in population parameters between cohorts raised at 23 and 25 ∘ C. 5 The present study provides a basis for understanding the population ecology of A. aeneociliella and can be instrumental in constructing future integrated pest management programmes against this widespread pest.

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“…We also recorded three scaled photographs from the anterior view of the head at first capture, then from these photos we measured head width, the largest distance between the lateral edges of the eyes, the widest part of the butterfly head, twice from each photograph. Head width is considered a proxy of body size in insects (Dahlsjö, 2016 ; Hagen & Dupont, 2013 ), including Lepidoptera (Mo et al, 2013 ), associated with fecundity (Schmidt & Blume, 1973 ). Since it does not change over adult life, it reflects an age‐independent quality of an individual.…”

Section: Methodsmentioning

confidence: 99%

Mate‐guarding success depends on male investment in a butterfly

Gór,

Lang,

Pásztor

et al. 2023

Ecology and Evolution

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Males of many insects, including butterflies, produce mate‐guarding devices, such as mating plugs, to prolong guarding and prevent future female matings in the male's absence. In a few butterflies, large external mate‐guarding devices, that is, sphragides, occur. Gór et al. (Behaviour, 160, 2023 and 515−557) found conspicuously large size and morphological variation of mate‐guarding devices within a single population of the potentially polyandrous Clouded Apollo (Parnassius mnemosyne, L.) butterfly. They termed the externally visible male‐produced devices as Copulatory opening APpendices (CAP) consisting of small devices, termed small CAPs and the much larger shield (i.e. sphragis). Our aim was to reveal CAP replacement dynamics within females during their lifetime and to understand how male investment into small CAPs or shields was (i) related to CAP persistence on the female, that is securing paternity, (ii) associated with female quality, measured as size and (iii) with actual adult sex ratio. We investigated a univoltine Clouded Apollo population to estimate CAP replacement risks, using multistate survival models, in an extensive observational study through 6 years based on mark‐recapture. Shields were the most frequent mate‐guarding devices and were more persistent than small CAPs, often lasting for life, excluding future matings. Thus, most females bearing a shield were deprived of postcopulatory female choice, and the genetic variance in their offspring could be reduced compared to those bearing small CAPs, thus mating more often. The ratio of shields to all CAPs gradually decreased towards the end of the flight period. Males were more prone to produce a shield when mating females with wider thoraces and when the ratio of males (i.e. competition) was higher in the population. To our best knowledge, this is the first quantitative study to investigate potential factors on which male investment in mate‐guarding devices may depend, and how the variation in these devices impacts CAP persistence on females.

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Interactive effect of diet and temperature on instar numbers in Spodoptera litura, with reference to head capsule width and weight

Cited by 8 publications

References 17 publications

Temperature and Host Plant Impacts on the Development of Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae): Linear and Nonlinear Modeling

Temperature and Host Plant Impacts on the Development of Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae): Linear and Nonlinear Modeling

Temperature‐dependent demography ofAgriphila aeneociliella(Lepidoptera:Crambidae), a new insect pest of wheat inChina

Mate‐guarding success depends on male investment in a butterfly

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