@article{article_438910, title={The prey-stage preferences of Amblyseius swirskii Athias-Henriot and Neoseiulus californicus (McGregor) (Mesostigmata: Phytoseiidae), between egg and nymph stages of Tetranychus urticae Koch (Trombidiformes: Tetranychidae)}, journal={Plant Protection Bulletin}, volume={59}, pages={37–42}, year={2019}, DOI={10.16955/bitkorb.438910}, author={Akyazı, Rana and Soysal, Mete and Altunç, Yunus Emre}, keywords={biyolojik mücadele,predatör akar,iki noktalı kırmızı örümcek,yumurta,nimf,av dönemi,tercih}, abstract={<p class="MsoNormal" style="margin-top:6pt;margin-right:0cm;margin-bottom:6pt;margin-left:0cm;text-align:justify;line-height:150%;"> <i> <span style="font-family:Arial, sans-serif;color:#000000;" lang="en-us" xml:lang="en-us">Tetranychus urticae </span> </i> <span style="font-family:Arial, sans-serif;color:#000000;" lang="en-us" xml:lang="en-us"> Koch
(Trombidiformes: Tetranychidae), two-spotted spider mite, is a pest mite
species that feed on a wide range of plants around the world. <i> Neoseiulus californicus </i> (McGregor)
(Mesostigmata: Phytoseiidae) is shown as a predatory mite to be a very
efficient biological control agent of <i>T.
urticae </i>. <i>Amblyseius swirskii </i>
Athias-Henriot (Mesostigmata: Phytoseiidae) is another phytoseiid mite species which
can feed and reproduce on a <span>wide range </span>
of <span>food sources </span>, including <i>T. urticae. </i>Information about the prey
stage preference of a predator is valuable for evaluations of the potential of
predatory mites to control of pests. We therefore analyzed the prey-stage
preferences of <i>A. swirskii </i> and <i>N. californicus </i> to eggs and nymphs of <i>T. urticae </i> at 15:15, 10:20, and 20:10
egg: nymph ratios under controlled conditions ( <span>25±1 °C, 65±5% RH and 16-h light: 8-h dark photoperiod). The </span>experiment
was carried out <span>on abaxial surfaces of bean
leaf discs </span> with a <span>diameter </span>
of 2 <span>cm. </span>Starved (for 24 h), 2-3
days-old gravid females of <i>A. swirskii </i>
and <i>N. californicus </i> were used in the
experiment. One predatory mite was placed <span>individually </span>on each bean leaf disc infested with 15:15, 10:20 and
20:10 ratios of <i>T. urticae </i>egg: nymph. After 24 h of feeding, the
numbers of prey consumed for each prey stage were recorded. From the results,
it is clear that while <i>N. californicus </i>
showed no preference between egg and nymphs of <i>T. urticae </i>. <i>A. swirskii </i>
preferred nymphs to eggs of <i> T. urticae </i> <span>. </span> </span> </p> <p> <br /> </p>}, number={1}, publisher={TARIM VE ORMAN BAKANLIĞI EĞİTİM VE YAYIN DAİRESİ BAŞKANLIĞI}