SEASONAL AND WITHIN PLANT DISTRIBUTION OF FRANKLINIELLA THRIPS (THYSANOPTERA: THRIPIDAE) IN NORTH FLORIDA TOMATOES

By S. Reitz. 2002

95 citations recorded by the source corpus.

Abstract Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), the western flower thrips, is the primary insect pest of tomatoes and other vegetable crops in northern Florida and the rest of the southeastern USA. However, it is not the only flower thrips present in the region nor is it always the most abundant species. To determine the seasonal and within plant distribution of these various Frankliniella species, experimental tomato plants, grown under different nitrogen fertilization regimes, were sampled during the fall and spring growing seasons. Contrary to expectations, different levels of nitrogen fertilization did not affect the abundance of thrips species. Thrips were much more abundant in the spring than in the fall. In the spring F. occidentalis was the most abundant species, while in the fall F. tritici (Fitch) was the most abundant species. In both the fall and spring, significantly more adults occurred in flowers in the upper part of the plant canopy than in flowers in the lower part of the plant canopy. The sex ratio tended to be female biased, but with a greater percentage of males occurring in the upper canopy flowers. In contrast, significantly more immature thrips occurred in the lower part of the plant canopy than in flowers in the upper part of the plant canopy. Differences in seasonal patterns and within plant distribution should be considered in developing sampling protocols and management plans for thrips.

Subfields: Insect Science, Molecular Biology

View Paper: https://www.semanticscholar.org/paper/668fcbda01f32834005bd8d6f919beccc6d469d8

How researchers see this paper

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In Insect Science

1. S. Reitz
2. Yu-lin Gao
3. Z. Lei
4. Jerrad Funderburk

In Molecular Biology

1. Yu-lin Gao
2. Z. Lei
3. S. Reitz

Citations in the corpus

• Within-Plant Distribution of Frankliniella species (Thysanoptera: Thripidae) and Orius insidiosus (Heteroptera: Anthocoridae) in Field Pepper (2003, background): “Also in northern Florida, the proportion of F. occidentalis in the species complex becomes extremely low in the fall, and F. tritici is the predominant species at that time of year (Ramachandran et al. 2001, Reitz 2002).”
• Thrips: Pests of Concern to China and the United States (2011, background): “The spatial distribution of adults and larvae within plants may differ (Reitz 2002; Mo et al. 2008), but adults and larvae tend to prefer concealed, protected habitats on plants, such as flowers, buds, or where leaves are appressed to one another (Lewis 1973).”
• Biology and Ecology of the Western Flower Thrips (Thysanoptera: Thripidae): The Making of a Pest (2009, background): “Tomato is a poor reproductive host for western flower thrips (Brodbeck et al. 2001; Reitz 2002).”