Zur Nahrungsaufnahme des Bogen‐Marienkäfers, Clitostethus arcuatus (Rossi) (Col., Coccinellidae), einem Vertilger der Kohlmottenlaus, Aleurodes proletella Linné (Hom., Aleurodidae)

Abstract

On the food consumption of Clitostethus arcuatus (Rossi) (Col., Coccinellidae), a predator of Aleurodes proletella L. (Hom., Aleurodidae) In Central Europe the ladybird Clitostethus arcuatus (Rossi) (Col., Coccinellidae, Scymnini) colonizes the warmest regions only, e.g. the Upper Rhine Valley. From May until November 3 overlapping generations are produced. Larvae and adults prey upon eggs, larvae, pupae and adults of white flies (Hom., Aleurodidae). In our experiments C. arcuatus was fed with eggs of Aleurodes proletella L. During larval development an average of 544 ± 189 eggs is consumed by each larva. For individual males and females (during egg laying) an average consumption of 27.4 and 60.7 eggs/day, respectively, was stated. Consequently C. arcuatus seems to be an effective predator of white flies. Zusammenfassung Der Bogen‐Marienkäfer, Clitostethus arcuatus (Rossi) (Col., Coccinellidae, Scymnini) tritt in Mitteleuropa nur an wärmebegünstigten Orten, so z.B. im Oberrheingraben auf. Er ist in 3 überlappenden Generationen von Mai bis Anfang November aktiv. Seine Nahrung besteht aus Eiern, Larven, Puppen und adulten Mottenläusen (Hom., Aleurodidae). Die Fraßversuche wurden mit Kohlmottenläusen, Aleurodes proletella L., als Beutetiere durchgeführt. Während seiner gesamten Larvalentwicklung frißt C. arcuatus im Mittel 544 ± 189 Eier. Bei einer Lebensdauer der Imagines von durchschnittlich 150 Tagen (im Labor) ernährt sich ein eierlegendes Weibchen im Mittel von 60,73 Eiern der Kohlmottenlaus je Tag, während ein Männchen nur etwa 27,4 benötigt. Der Bogen‐Marienkäfer stellt somit einen effektiven Vertilger von Mottenläusen dar.

Development, Survival, Longevity, and Fecundity of Clitostethus arcuatus (Coleoptera: Coccinellidae) on Siphoninus phillyreae (Homoptera: Aleyrodidae) in the Laboratory

“…Adult longevity was greatest at the lower temperatures and shortened by as much as 40% at 32.2°C; males were shorter-lived than females at all temperatures. Bathon & Pietrzik (1986) report longevities of up to 150 d at 22-24°C, similar to the maximum longevities obtained in this study at 28.2°C.…”

“…rodids and other insects and mites, is one of several coccinellids reported to feed on whiteflies (Gerling 1990). It is widely disb'ibuted in the Mediterranean and surrounding areas, including Lyon (Gautier 1922) and Montpellier (T.S.B., unpublished data), France; the Italian peninsula (Priore 1969, Tremblay 1969, Loi 1978; Sicily (Liotta 1981); Greece (Mentzelos 1967); Israel (D. G., unpublished data); Turkey (Soylu 1980, Ulu 1985; Germany (Bathon & Pietrzik 1986); and in the southern and western portions of the former U.S.S.R. (Age ryan 1977). Ageryan (1977) also reports its distribution to include northern Africa.…”

“…Clitostethus arcuatus is a polyphagous species and has been reported feeding on sympatric aleyrodids native to its Old World distribution (Siphoninus phillyreae (Haliday) [Mentzelos 1967, Tremblay 1969, S. immaculata (Heeger) [Kirkaldy 1907] and Aleyrodes proletella L. [Silvestri 1934, Bathon & Pietrzik 1986), as well as species introduced to the Mediterranean and 1969, Ageryan 1977, Loi 1978, Soylu 1980, Liotta 1981, VIu 1985, Trialeurodes vaporariorum (Westwood) [Ageryan 1977], and Aleurothrixus floccosus (Maskell) [Liotta 1982]). It feeds on whitefly eggs, nymphs, and adults (Priore 1969, Bathon & Pietrzik 1986, with predation apparently primarily on the eggs and nymphs when all stages are present (Priore 1969,. Female adults 1 Departmentof Zoology, Tel AvivUniversity, RamatAviv, Israel.…”

“…feeding on eggs of A. proletella consumed up to 10,000 eggs per individual (Bathon & Pietrzik 1986). It has been reported feeding on aphids (Ageryan 1977) and on the mite Tetranychus urticae Koch (Liotta 1981).…”

BIOLOGY OF THE COCCINELLID PREDATOR, Clitostethus acuatus (ROSSI), IN WINTER , AS REARED ON EGG OF THE WHITE FLY , Bemisia tabaci

“…The coccinellid predator, Clitostethus arcuatus (Rossi) is one of the most important and effective specific predators of aleyrodids ( loi, 1978 , Bathon andpietrizik , 1986 ;Gerling 1990, Mesbah et al 1998and Javadjoh et al 2009. It is widely distributed in the Mediterranean and surrounding regions.…”