Choice of feeding sites, growth and survival by Crocidolomia pavonana (F.)

Tadle, Frezzel Praise J.

doi:10.14264/uql.2017.369

Cited by 4 publications

(5 citation statements)

References 88 publications

(278 reference statements)

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“…To process glucosinolates in their food plants, the Brassicaceae feeders Plutella xylostella (Linnaeus, 1758) (Yponomeutoidea) and Pieris rapae Linnaeus, 1758 (Papilionoidea) use the enzyme glucosinolate sulfatase (Ratzka et al., 2002), or they hydrolyse them into nitriles (Wittstock et al., 2004). Not much is known about the way Glaphyriinae metabolize glucosinolates, but Crocidolomia pavonana (Fabricius, 1794) appears to be resistant to isothiocyanate, while it is lethal to P. xylostella , suggesting the existence of a different metabolic pathway of processing glucosinolates (Tadle, 2017). In Crambidae, several other taxa are feeding on Brassicales: Styphlolepis and Dolichobela (Midilinae) are reported from Capparaceae (Solis et al., 2009), while some species of Chilo and Talis (Crambinae), Loxostege and Ostrinia (Pyraustinae), and Herpetogramma , Nomophila , Omiodes and Udea (Spilomelinae) have been recorded from Brassicaceae (Robinson et al., 2010).…”

Section: Resultsmentioning

confidence: 99%

Refining the phylogeny of Crambidae with complete sampling of subfamilies (Lepidoptera, Pyraloidea)

et al. 2020

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Crambidae is a group of moths with more than 10,000 species occurring worldwide that evolved diverse morphological and ecological habits. They can be best recognized by morphological characters of the adult tympanal organ and larval chaetotaxy. We present the first molecular phylogeny of Crambidae including all subfamilies and most tribes. We use available molecular data from two previous studies, and published transcriptomes and genomes, compiling ten genes totalling 11,247 bp. Up to eight genes are sequenced for thirty‐nine additional taxa, with Cathariinae, Cybalomiinae and Linostinae sampled for the first time. Maximum‐likelihood and Bayesian analyses recover topologies mostly agreeing with those of previous studies, with several groupings showing better support. Cathariinae syn. n. and Cybalomiinae syn. n. are recovered as ingroup of Glaphyriinae and are consequently synonymized with the latter. Linostinae are either sister to Glaphyriinae or sister to the ‘CAMMSS clade’. Lathrotelinae are recovered monophyletic and as sister to Musotiminae in the Bayesian analysis. Hoploscopinae stat. n. are recovered as sister to ((Crambinae + Erupinae stat. n.) + (Scopariinae + Heliothelinae s. str.)). Evolution of host‐plant preferences is discussed.

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Section: Resultsmentioning

confidence: 99%

Refining the phylogeny of Crambidae with complete sampling of subfamilies (Lepidoptera, Pyraloidea)

et al. 2020

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“…The higher removal of eggs from the upper leaves could be because these leaves are more exposed to the direct and indirect impacts of rainfall or it could be that eggs on upper leaves are not as strongly attached to the surface as they are on lower leaves. This may be due to different surface properties between the leaves (Tadle, 2017), but upper leaves also expand more quickly than lower leaves and this might also contribute to the weakening of the bonds between eggs and the leaf surface (Kyi et al, 1991). Direct exposure to rainfall causes eggs to be washed off leaves (Kobori & Amano, 2003).…”

Section: Discussionmentioning

confidence: 99%

“…The results clearly indicate that differences in plant architecture, morphology, and surface waxes have important effects on the impact of rainfall on eggs on different host plants. Usually, common cabbage leaves contain more wax crystals than Chinese cabbage leaves (Tadle, 2017) and the wax content of the oviposition sites affects the quality of egg adhesion. In wax-free leaves, eggs remain strongly attached to leaf surfaces (Uematsu & Sakanoshita, 1989) and this may account for the reduced susceptibility of eggs on Chinese cabbage leaves to rainfall.…”

Section: Discussionmentioning

confidence: 99%

Diamondback moth egg susceptibility to rainfall: effects of host plant and oviposition behavior

Rahman

Zalucki

Furlong

2019

Entomologia Exp Applicata

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Oviposition patterns of the diamondback moth (DBM), Plutella xylostella L. (Lepidoptera: Plutellidae), differ between common cabbage (Brassica oleracea L. var. capitata) and Chinese cabbage (Brassica rapa L. var. pekinensis) (Brassicaceae) host plants. This study shows that the moth prefers to oviposit on adaxial rather than abaxial leaf surfaces and petioles of both host plants. More eggs were laid in leaf veins than on leaf laminas of both host plants, especially in Chinese cabbage, where 94.6% of eggs were laid in veins. On Chinese cabbage, very few eggs were laid in clusters (≥2 eggs), whereas on common cabbage approximately 30% of eggs were laid in groups of 2 or more eggs. Removal of wax from common cabbage leaves dramatically increased the number of eggs laid singly on the leaf lamina of treated plants, suggesting that leaf waxes affect how eggs are distributed by ovipositing DBM. Eggs were most susceptible to removal by rainfall from the plant surface immediately (<1 h) after oviposition and when close to hatching (>72h old) whereas they were least susceptible 24 h after oviposition. Eggs laid on common cabbage plants were more susceptible to simulated rainfall than eggs laid on Chinese cabbage plants. On common cabbage plants, egg susceptibility to rainfall on different plant parts ranked adaxial leaf surfaces>petioles = abaxial leaf surfaces>stem, but there was no difference in egg susceptibility to rainfall on the various plant parts of Chinese cabbage. Furthermore, on common cabbage plants, eggs laid on both adaxial and abaxial leaf surfaces were afforded significant protection from the effects of rainfall by leaves higher in the plant canopy. On common cabbage plants, oviposition patterns reduce the potential impact of rainfall on eggs, possibly reducing the effect of this important abiotic mortality factor in the field.

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“…All the leaves of common cabbage plants are waxy but the wax crystals on the surface of upper leaves are more densely arranged than those on the surface of lower leaves. Further, these waxes are structurally different (Barthlott et al, 1998; Tadle, 2017); those on the upper leaves have longitudinally aggregated rodlets but such structures are not evident on the waxes on the surfaces of lower leaves. These differences in the density and shape of wax crystals on the lower vs. upper leaves may have resulted in eggs being supported differently on the two surfaces.…”

Section: Discussionmentioning

confidence: 99%

Diamondback moth egg susceptibility to rainfall: effects of leaf surface properties on the direct and indirect impact of simulated rain

Rahman

Zalucki

Furlong

2023

Entomologia Exp Applicata

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Diamondback moth (DBM), Plutella xylostella L. (Lepidoptera: Plutellidae), eggs are vulnerable to rainfall, but the impact is dependent on host plant properties and the nature of oviposition sites. The effects of host plants, common cabbage (Brassica oleracea L. var. capitata) and Chinese cabbage (Brassica rapa L. var. pekinensis) (Brassicaceae), and oviposition sites on the fate of eggs subjected to simulated raindrops were investigated in laboratory experiments. In oviposition studies, DBM deposited more eggs on leaf veins than on leaf laminas on both host plants. In common cabbage plants, eggs laid on lower leaves (leaf 2) were less susceptible to dislodgment by rainfall than eggs laid on upper leaves (leaf 6). Eggs laid on the veins on the abaxial surfaces of leaves 2 and 6 of common cabbage plants were less susceptible to dislodgment by raindrops than eggs laid at other sites on this host plant. In Chinese cabbage plants, eggs laid on the veins were less susceptible to dislodgment by raindrops than eggs laid on leaf laminas. When DBM laid eggs in clusters, eggs were less susceptible to dislodgment by raindrops. The presence of waxes on leaf surfaces and concave veins affected egg placement and the retention of eggs at oviposition sites when subjected to raindrops. Eggs were more resistant to raindrops on the concave veined and less waxy leaves of Chinese cabbage plants than on waxy surfaces of smooth common cabbage leaves. When epicuticular wax crystals were removed from common cabbage leaves before oviposition, eggs were more resistant to dislodgment by raindrops. Leaf orientation or angle (horizontal plane vs. an angle of 45°) did not affect the susceptibility of eggs to raindrops. However, eggs were affected indirectly, and vibrations caused by the impact of raindrops resulted in egg removal from both adaxial and abaxial surfaces. Overall, eggs were less likely to be dislodged by raindrops when laid on concave veins and less waxy leaf surfaces. In oviposition tests, DBM laid fewer eggs on plant parts from which they were most easily removed by raindrops, and when they did lay eggs at these sites, they often deposited them in clusters which were more resistant than single eggs to removal by raindrops. The study reiterates the species‐specific nature of DBM‐host plant interactions and shows that female DBM can modify their behaviour to improve the probability of egg survival when substrates available for oviposition are sub‐optimal.

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Choice of feeding sites, growth and survival by Crocidolomia pavonana (F.)

Cited by 4 publications

References 88 publications

Refining the phylogeny of Crambidae with complete sampling of subfamilies (Lepidoptera, Pyraloidea)

Refining the phylogeny of Crambidae with complete sampling of subfamilies (Lepidoptera, Pyraloidea)

Diamondback moth egg susceptibility to rainfall: effects of host plant and oviposition behavior

Diamondback moth egg susceptibility to rainfall: effects of leaf surface properties on the direct and indirect impact of simulated rain

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