Results 21 to 30 of about 7,930 (223)

Levels of genetic polymorphism: marker loci versus quantitative traits [PDF]

, 1998
Species are the units used to measure ecological diversity and alleles are the units of genetic diversity. Genetic variation within and among species has been documented most extensively using allozyme electrophoresis.
Butlin R. K., Butlin R. K., Meyer J., Muller H. J., Neems R. M., Nei M., Ward R. D., Watt W. B., Watt W. B., Wu C-I.   +9 more
core   +3 more sources

Development of Molecular-Based Species Identification and Optimization of Reaction Conditions for Molecular Diagnosis of Three Major Asian Planthoppers (Hemiptera: Delphacidae)

Insects, 2023
Asian planthoppers (Hemiptera: Delphacidae) that include brown planthoppers (BPH, Nilaparvata lugens, Stål), white-backed planthoppers (WBPH, Sogatella furcifera, Horváth), and small brown planthoppers (SBPH, Laodelphax striatellus, Fallén) are the ...
Md-Mafizur Rahman, Hwayeun Nam, Nakjung Choi, Juil Kim   +3 more
doaj   +1 more source

Adaptation by the Brown Planthopper to Resistant Rice: A Test of Female-Derived Virulence and the Role of Yeast-like Symbionts

Insects, 2021
The adaptation by planthoppers to feed and develop on resistant rice is a challenge for pest management in Asia. We conducted a series of manipulative experiments with the brown planthopper (Nilaparvata lugens (Stål)) on the resistant rice variety IR62 ...
Finbarr G. Horgan, Ainara Peñalver Cruz, Arriza Arida, Jedeliza B. Ferrater, Carmencita C. Bernal   +4 more
doaj   +1 more source

Flora surrounding rice fields as a source of alternative prey for coccinellids feeding on the pests of rice

European Journal of Entomology, 2018
Coccinellids are effective predators and a key component of the predator guild in rice ecosystems. In order to enhance their efficacy, a study was undertaken to assess the seasonal movement of coccinellids into rice fields and the role of the surrounding
Chitra SHANKER, Lydia CHINTAGUNTA, Sampathkumar MUTHUSAMY, Sunil VAILLA, Amudhan SRINIVASAN, Gururaj KATTI   +5 more
doaj   +1 more source

Nitrogenous Fertilizer Reduces Resistance but Enhances Tolerance to the Brown Planthopper in Fast-Growing, Moderately Resistant Rice

Insects, 2021
The brown planthopper, Nilaparvata lugens (Stål), is a key challenge to rice production in Asia. Outbreaks of planthoppers are associated with excessive fertilizer applications; consequently, we examined planthopper interactions with susceptible ...
Finbarr G. Horgan, Thais Fernanda S. de Freitas, Eduardo Crisol-Martínez, Enrique A. Mundaca, Carmencita C. Bernal   +4 more
doaj   +1 more source

Application of Integrated Pest Control Models Nilaparvata Lugens (Stal) (Homoptera: Delphacidae) In Rice Plants Outside of Sidoarjo Mud Impact Area

Agricultural Science, 2021
This study aims to apply an integrated pest control model (IPC) of brown planthoppers (bph) on rice against the presence of natural enemies in maintaining rice productivity.
Faisol Humaidi
doaj  

Kazukuru gen. nov. – a new Ricaniidae planthopper from Solomon Islands (Hemiptera, Fulgoromorpha) [PDF]

Deutsche Entomologische Zeitschrift, 2021
A new monotypic genus of ricaniid planthoppers (Hemiptera: Fulgoromorpha: Ricaniidae) from New Georgia Island (Solomon Islands), Kazukuru gen. nov., is described for K. zingiberis sp. nov. (type species).
Adam Stroiński
doaj   +3 more sources

Testing Seven Hypotheses to Determine What Explains the Current Planthopper (Fulgoridae) Geographical and Species Richness Patterns in China

Insects, 2020
Although many hypotheses have been proposed to understand the mechanisms underlying large-scale richness patterns, the environmental determinants are still poorly understood, particularly in insects.
Zheng-Xue Zhao, Lin Yang, Jian-Kun Long, Zhi-Min Chang, Zheng-Xiang Zhou, Yan Zhi, Liang-Jing Yang, Hong-Xing Li, Yong-Jin Sui, Nian Gong, Xiao-Ya Wang, Xiang-Sheng Chen   +11 more
doaj   +1 more source

Higher Fertilizer Inputs Increase Fitness Traits of Brown Planthopper in Rice. [PDF]

, 2017
Rice (Oryza sativa L.) is the primary staple food source for more than half of the world's population. In many developing countries, increased use of fertilizers is a response to increase demand for rice.
Ahmed, N, Ali, MP, Islam, KS, Jahan, M, Nansen, C, Rashid, MM, Willers, JL   +6 more
core   +1 more source

Variable infection frequency and high diversity of multiple strains of Wolbachia pipientis in Perkinsiella planthoppers [PDF]

, 2011
This survey of Wolbachia infections in populations of the planthoppers Perkinsiella saccharicida and Perkinsiella vitiensis revealed variable frequencies, low-titer infections, and high phylogenetic diversities of strains.
Hughes, G. L., Allsopp, P. G., Brumbley, S. M., Woolfit, M., McGraw, E. A., O'Neill, S. L.   +5 more
core   +1 more source