Journal ArticleDOI
Life Table Studies of the Cotton Bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae), on Different Host Plants
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It is concluded that H. armigera can complete their life cycle on all six host plants, although tomato and hot pepper were relatively unsuitable.Abstract:
The development, body weight, survivorship, and reproduction of the cotton bollworm, Helicoverpa armigera (Hubner), were evaluated in the laboratory at 27°C and photoperiod L:D = 14:10 on six host plants: cotton (Gossypium hirsutum L.), corn (Zea mays L.), tomato (Lycopersicon esculentum Mill), hot pepper (Capsicun frutescens L.), tobacco (Nicotiana tobacum L.), and common bean (Phaseolus vulgaris L.). Cotton bollworm larvae successfully survived on all six host plants, although mortality was very high on hot pepper and tomato. The developmental time of immature stages ranged from 26.6 d on corn to 35.1 d on tomato. Body weight of young fourth instar larvae ranged from 22.8 mg on corn to 5.9 mg on tobacco, while body weight of young last instar larvae and pupae ranged from 176.7 mg on cotton to 132.5 mg on tomato, and 285.2 mg on corn to 167.1 mg on tomato, respectively. Immature survival from egg to pupa varied from 33.1% on cotton to 1.7% on hot pepper. The average number of eggs oviposited by adults reared on cotton, corn, common bean, tomato, hot pepper, and tobacco were 708.4, 784.8, 778.1, 559.1, 562.5, and 314.3, respectively. The net reproductive rate of this species, measured from egg to egg, varied from 117.6 on cotton to 5.1 on hot pepper. We conclude that H. armigera can complete their life cycle on all six host plants, although tomato and hot pepper were relatively unsuitable.read more
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Genomic innovations, transcriptional plasticity and gene loss underlying the evolution and divergence of two highly polyphagous and invasive Helicoverpa pest species
Stephen L. Pearce,David F. Clarke,David F. Clarke,Peter D. East,Samia Elfekih,Karl H.J. Gordon,Lars S. Jermiin,Angela McGaughran,Angela McGaughran,John G. Oakeshott,A. Papanikolaou,A. Papanikolaou,Omaththage P. Perera,Rahul V. Rane,Rahul V. Rane,Stephen Richards,Wee Tek Tay,Tom Walsh,Alisha Anderson,Craig Anderson,Craig Anderson,Sassan Asgari,Philip G. Board,Anne Bretschneider,Peter M. Campbell,Thomas Chertemps,Thomas Chertemps,John T. Christeller,Christopher W. Coppin,Sharon Downes,G. Duan,Claire A. Farnsworth,Robert T. Good,L. B. Han,Y. C. Han,Y. C. Han,Klas Hatje,Irene Horne,Y. P. Huang,Daniel S.T. Hughes,Emmanuelle Jacquin-Joly,William James,Shalini N. Jhangiani,Martin Kollmar,Suyog S. Kuwar,S. Li,N-Y. Liu,N-Y. Liu,Martine Maïbèche,Martine Maïbèche,Jason R. Miller,Nicolas Montagné,Trent Perry,Jiaxin Qu,S. V. Song,Granger G. Sutton,Heiko Vogel,Brian P. Walenz,Wei Xu,Wei Xu,H-J. Zhang,H-J. Zhang,Z. Zou,Philip J. Batterham,Owain R. Edwards,René Feyereisen,Richard A. Gibbs,David G. Heckel,Annette McGrath,Charles Robin,Steven E. Scherer,Kim C. Worley,Yidong Wu +72 more
TL;DR: The extreme polyphagy of the two heliothines is associated with extensive amplification and neofunctionalisation of genes involved in host finding and use, coupled with versatile transcriptional responses on different hosts.
Journal ArticleDOI
Understanding Heliothine (Lepidoptera: Heliothinae) Pests: What is a Host Plant?
TL;DR: In this paper, the authors examine the current literature on heliothine host-selection behavior with the aim of providing a knowledge base for research scientists and pest managers, and discuss research into sustainable management of pest Heliothines using knowledge of helianthropoietin behavior and ecology.
Journal ArticleDOI
Development, Survivorship, and Reproduction of Helicoverpa armigera (Lepidoptera: Noctuidae) Under Constant and Alternating Temperatures
TL;DR: The values of developmental thresholds estimated using the nonlinear (Lactin-2) model were lower than those estimated by the linear model for constant and alternating temperature regimes except for larval and pupal stages at constant temperatures.
Journal ArticleDOI
Comparative life history and fecundity of helicoverpa armigera (hubner) (lepidoptera: noctuidae) on different soybean varieties
TL;DR: Cluster analysis of the biological parameters of H. armigera on different soybean varieties demonstrated that BP, Sahar and L17 were partially resistant to H.Armigera.
Journal ArticleDOI
Transcriptional responses underlying the hormetic and detrimental effects of the plant secondary metabolite gossypol on the generalist herbivore Helicoverpa armigera.
TL;DR: This study represents the first transcriptional profiling approach investigating the effects of different concentrations of gossypol in a lepidopteran species and reveals diverse detoxifying mechanisms not only to alleviate direct effects of gOSSypol but also indirect damage such as pH disturbance and oxygen radical formation.
References
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Journal ArticleDOI
The Ecology of Heliothis Species in Relation to Agroecosystems
TL;DR: As key pests of several agricultural and horticultural crops, the four species I have singled out for review have attracted an enormous volume of research work and the literature on their ecology, biology and management is vast.
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The Biology and Ecology of Heliothis-Armigera (hubner) and Heliothis-Punctigera Wallengren (lepidoptera, Noctuidae) in Australia - What Do We Know
TL;DR: The taxonomy and identification of Heliothis armigera and H. punctigera, their distribution and host plants in Australia, the effect of host plant on reproduction and on the development and survival of immature stages, their movements, population biology and dynamics, and their control are reviewed.
Journal ArticleDOI
Recent Advances in Insect Population Dynamics
G. C. Varley,G. R. Gradwell +1 more
TL;DR: The next two stages in the study, the analysis of life tables and the development of population models, are examined, to stimulate workers to stimulate more precisely their reasons for collecting census figures and help them develop a critical understanding of the analytical methods they apply to them.
Journal ArticleDOI
Host-plant quality influences diapause and voltinism in a polyphagous insect herbivore
Mark D. Hunter,Jeremy N. McNeil +1 more
TL;DR: It is argued that the effect of plant quality on diapause induction in natural populations of insect herbivores merits more attention.