Performance and age-stage, two-sex life table of Neoseiulus californicus (Mcgregor) (Acari: Phytoseiidae) preying on Aculops lycopersici (Massee) (Acari: Eriophyidae) across tomato cultivars differing in leaf trichomes


Gök N., Kumral N. A., Çobanoğlu S., Gençer N. S., Akbudak N.

CROP PROTECTION AN INTERNATIONAL JOURNAL OF PEST, DISEASE & WEED CONTROL, cilt.205, sa.7, ss.107622, 2026 (SCI-Expanded, Scopus)

Özet

The development and mobility of the biological control agent, Neoseiulus californicus (McGregor) (Acari: Phytoseiidae), can be hindered by physical barriers on the plant surface, such as glandular and non-glandular trichomes, as well as by certain chemical constituents. While these barriers are deterrent for predatory mites, they may offer an advantage to tiny plant-parasitic mites, especially the tomato russet mite, Aculops lycopersici (Massee) (Acari: Eriophyidae). This study evaluated the age-stage, two-sex life table parameters of N. californicus preying on A. lycopersici across six tomato cultivars, including one wild genotype, differing in glandular and non-glandular trichome densities. The predatory mite successfully completed its development and reproduced on all tested cultivars, although life history traits were significantly influenced by the host plant. Immature developmental times were the shortest on Nazar and longest on Gulpembe. A clear performance gradient was observed among cultivars: the wild genotype Beaufort, characterized by high trichome density, significantly hindered the predator's performance, resulting in the lowest fecundity and population growth rates. Conversely, the highest reproductive success and population growth were recorded on Ug19046, while the longest adult longevity was achieved on Y65. These results demonstrate that while N. californicus can prey on A. lycopersici across various tomato genotypes, its biological performance is strongly constrained by cultivar-specific leaf surface characteristics. The findings of this study provide valuable insights for improving biological control strategies aimed at managing A. lycopersici infestations in tomato cultivation.