Evidence map›Paper›PMID 42104517›Full record

ArticleParasites & vectors2026

Dietary effects on the development and population dynamics of the Thelazia callipaeda vector Phortica okadai revealed by age-stage, two-sex life table analysis.

Zhenfu Chen, Rong Yan, Lingjun Wang, Juan Zhou, Bo Luo, Donghua Long, Rengze Yue, Hui Liu, Yujuan Shen

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Article in Parasites & vectors, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Zhenfu Chen *NHC Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic Diseases, Chinese Center for Diseases Control and Prevention (Chinese Center for Tropical Diseases Research), Shanghai, 200025, China.
Rong Yan *Department of Parasitology, Zunyi Medical University, Zunyi, 563000, China.
Lingjun WangNHC Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic Diseases, Chinese Center for Diseases Control and Prevention (Chinese Center for Tropical Diseases Research), Shanghai, 200025, China.
Juan ZhouDepartment of Parasitology, Zunyi Medical University, Zunyi, 563000, China.
Bo LuoDepartment of Parasitology, Zunyi Medical University, Zunyi, 563000, China.
Donghua LongDepartment of Parasitology, Zunyi Medical University, Zunyi, 563000, China.
Rengze YueDepartment of Parasitology, Zunyi Medical University, Zunyi, 563000, China.
Hui LiuNHC Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic Diseases, Chinese Center for Diseases Control and Prevention (Chinese Center for Tropical Diseases Research), Shanghai, 200025, China.
Yujuan ShenNHC Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic Diseases, Chinese Center for Diseases Control and Prevention (Chinese Center for Tropical Diseases Research), Shanghai, 200025, China. shenyj@nipd.chinacdc.cn.

Funding

the Guizhou Provincial Basic Research Program (Natural Science) MS [2025]346the National Natural Science Foundation Project of Chin 82372283the National Natural Science Foundation Project of China 82360401the National Natural Science Foundation Project of China 82560404the Open Project Fund of Key Laboratory of Parasite and Vector Biology NHCKFKT2023-10the Science and Technology Foundation of Zunyi City ZSKH-HZ- [2024]-336
6 · The paper itself

Abstract

backgroundPhortica okadai (Diptera: Steganinae) is the primary vector of the zoonotic eyeworm Thelazia callipaeda (Nematoda: Spirurida). However, standardized laboratory rearing protocols for this vector are still lacking, which limits research on its biology and vector competence.

methodsWe evaluated the effects of five diets (fermented apple, pear, banana, and two artificial diets) on life history traits of P. okadai using age stage, two sex life table analysis under controlled conditions (28 ± 1 °C, 75 ± 5% RH, 14:10 h L:D). Life table parameters and population dynamics were analyzed with TWOSEX-MSChart and TIMING-MSChart (100,000 bootstrap replicates).

resultsAll tested diets supported complete development. Fermented pear yielded the shortest pre adult duration (17.34 days), the highest fecundity (116.6 eggs per female), and the greatest intrinsic rate of increase (r = 0.0902/day). Population projection showed that 10 initial eggs on fermented pear produced more than 1,200 adults within 90 days, which was approximately 10 fold higher than on other diets.

conclusionsFermented pear is the most suitable substrate for establishing laboratory colonies of P. okadai. These findings facilitate vector competence studies and indicate that pear orchards are potential high risk habitats for T. callipaeda transmission, supporting targeted One Health surveillance and control.

Indexed as

DietDipteraInsect VectorsThelazioideaAnimalsFemaleFertilityLife TablesMalePopulation DynamicsSpirurida InfectionsAge-stage two-sex life tableLaboratory rearingPhortica okadaiThelazia callipaedaVector ecology

Identifiers

PMID42104517
PMCPMC13321572

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