Colonization and Population Dynamics of Thrips in Peanuts in the Southern United States

Sampling Techniques for Thrips (Thysanoptera: Thripidae) in Preflowering Tomato

“…The r value of F. occidentalis was 0.10 on tomato, which was the same as the result of Zhang et al (2007), on cucumber, it was 0.14 of F. occidentalis, which was the similar to the result of the value of F. occidentalis on cucumber leaf (van Rijn et al 1995) but was lower than the value of 0.3 in Gaum et al (1994) and 0.21 in Zhang et al (2007), the reason may be the different genotypes of cucumber (Soria and Mollema 1995) or the difference of experiment temperature, which was 27 C on the experiment of Gaum et al (1994). As the results of history characteristics, on cucumber leaf, the r value of F. intonsa was higher compared with F. occidentalis and which was higher of F. occidentalis on tomato leaf.…”

“…The faster developmental rates and the higher fecundity of insects indicate a better suitability of a host plant (van Lenteren and Noldus 1990). Life history characteristics of F. occidentalis and F. intonsa were investigated on cucumber and tomato leaves.…”

“…For example, in spite of the disadvantage of history parameters compared with indigenous species T. tabaci (van Rijn et al 1995), F. occidentalis invaded successfully into the Europe and displaced T. tabaci become the dominate species, whereas F. occidentalis appears to be competitively excluded by the native F. tritici of eastern states of the United States because of the biotic resistance , further, even if the inferior competitor of F. bispinosa with F. occidentalis on adult reproduction, F. bispinosa still established dominance over F. occidentalis in Florida because of climate or natural enemy (Northfield et al 2011). The performance of F. occidentalis and F. intonsa depend on the kind of host plant, so more work about the performance of these two thrips on different important economical plants also should be done in the future, to evaluate the invasion of F. occidentalis.…”

“…In some area, F. occidentalis occurred with native Frankliniella intonsa, the predominant thrips population in horticultural ecosystems (Gai et al 2011). F. occidentalis has replaced Thrips tabaci as the dominant species in European greenhouses (van Rijn et al 1995) and has also been implicated in the displacement of F. intonsa in Turkey (Atakan and Uygur 2005) and the displacement of Frankliniella gemina (Bagnall) in Argentina (de Borbon et al 2006). However, F. occidentalis has failed to replace of Frankliniella tritici (Fitch) as the dominant species in the eastern United States (Salguero Navas et al 1991a, Reitz 2002, Paini et al 2007, Northfield et al 2008) and in central and southern Florida where Frankliniella bispinosa (Morgan) dominates (Childers et al 1990, Hansen et al 2003, Frantz and Mellinger 2009.…”

Variation Among Virginia Market-Type Peanut Genotypes in Susceptibility to Tomato Spotted Wilt Virus Vectored by Thrips (Thysanoptera: Thripidae)

“…Frankliniella occidentalis (Pergande), western flower thrips also occurs in peanut producing areas in North Carolina, but are rarely found on peanut foliage (Eckel et al, 1996;Groves, 2001;Groves et al, 2003). F. occidentalis is known to reproduce poorly on peanut, while peanut serves as a good host for reproduction of TT (Chamberlin et al, 1992;Todd et al, 1995). Only adult thrips and late instar larvae (Wijkamp and Peters, 1993;Wijkamp et al, 1995;Wetering et al, 1996) that acquired the virus as first instars can transmit TSWV to plants.…”