Host-age discrimination during host location by Cotesia glomerata, a larval parasitoid of Pieris brassicae

1995 ◽  
Vol 76 (1) ◽  
pp. 37-48 ◽  
Author(s):  
Letizia Mattiacci ◽  
Marcel Dicke
Keyword(s):  
Host Location ◽  
Pieris Brassicae ◽  
Age Discrimination ◽  
Cotesia Glomerata ◽  
Host Age ◽  
Larval Parasitoid

scholarly journals Environmentally acquired chemical camouflage affects Pieris brassicae L. host plant selection and orientation behaviour of a larval parasitoid

2021 ◽  
Author(s):  
Thuy Nga T. Bui ◽  
Sari J. Himanen ◽  
Jarmo K. Holopainen
Keyword(s):  
Parasitoid Wasp ◽  
Pieris Brassicae ◽  
Cotesia Glomerata ◽  
Host Plant Selection ◽  
Night Time ◽  
Additional Tool ◽  
Chemical Camouflage ◽  
Larval Parasitoid ◽  
Neighbouring Plant ◽  
Behavioural Tests

AbstractEnvironmentally acquired chemical camouflage is a phenomenon, where a plant growing close to a strong volatile organic compound (VOC) emitter will adsorb and re-emit the VOCs produced by the neighbouring plant. The re-emitted volatile bouquet may resemble more the VOC composition of the neighbour than plant’s own typical odour, and thus act as chemical camouflage against insect detection, potentially simultaneously providing associational resistance towards herbivory. We exposed a pest-sensitive horticultural crop, Brassica oleracea var. italica (broccoli) cv. Lucky, to the volatiles emitted by Rhododendron tomentosum [RT] twigs and assessed the host selection by ovipositing females and larval instars of the major caterpillar pest Pieris brassicae between RT-exposed and control plants. Potential impact of RT exposure on herbivore natural enemies was studied using behavioural tests with a parasitoid wasp Cotesia glomerata. P. brassicae females laid significantly less eggs and egg clusters were fewer on RT-exposed plants at both night-time (6 °C) and daytime (22 °C) temperatures. Larvae preferred leaves from control plants over RT-exposed plants at both temperatures. Preceding RT-exposure did not disturb orientation of parasitoid wasp Cotesia glomerata females towards B. oleracea plants damaged by its host P. brassicae. However, host-damaged control plants were favoured by the parasitoid over RT-exposed, host-damaged plants. Our results suggest that companion plant based chemical camouflage as a mechanism of pest suppression could be developed as an additional tool for the integrated pest management toolbox in agriculture.

scholarly journals Natural dispersal of Cotesia rubecula the recently introduced larval parasitoid of Pieris rapae through the South Island

2013 ◽  
Vol 66 ◽  
pp. 379-379
Author(s):  
G.P. Walker ◽  
F.H. MacDonald
Keyword(s):  
Pieris Rapae ◽  
Pieris Brassicae ◽  
Cotesia Glomerata ◽  
The South ◽  
Cotesia Rubecula ◽  
Far North ◽  
Larval Parasitoid ◽  
Interesting Study ◽  
Initial Release ◽  
Natural Dispersal

The natural dispersal of Cotesia rubecula the important larval parasitoid of Pieris rapae (small white butterfly) was assessed through the South Island over 2 years as part of an SFF project to improve management of foliage pests on forage vegetable and seed brassicas grown in the South Island This parasitoid has dispersed naturally from its initial release sites at Lincoln and Christchurch as far south as Dunedin airport as far north as north Cheviot and inland to Methven and Hanmer Springs However it has failed to establish in Southland and is not present in central Otago or Nelson/Marlborough Seasonal surveys indicate that this parasitoid is well synchronised with its host sometimes parasitising complete cohorts in a cropping area There is also strong evidence that C rubecula is displacing the earlier introduced and much less effective larval parasitoid Cotesia glomerata The hyperparasitoid Baryscapus galactopus is also affecting the new primary parasitoid A new SFF project is supporting the introduction of C rubecula into the Nelson/Marlborough region where its future interaction with C glomerata and possibly its other host Pieris brassicae (great white butterfly) a new incursion into New Zealand will be an interesting study

Host Location of Hyssopus pallidus, a Larval Parasitoid of the Codling Moth, Cydia pomonella

1999 ◽  
Vol 15 (3) ◽  
pp. 241-251 ◽  
Author(s):  
Letizia Mattiacci ◽  
Ellen Hütter ◽  
Silvia Dorn
Keyword(s):  
Host Location ◽  
Cydia Pomonella ◽  
Codling Moth ◽  
Larval Parasitoid

scholarly journals Host generated cues alter the foraging behavior of Cabbage butterfly, Pieris brassicae and its larval parasitoids, Cotesia glomerata and Hyposoter ebeninus

2013 ◽  
Vol 45 (2) ◽  
pp. 15
Author(s):  
M. Debarma ◽  
D.M. Firake
Keyword(s):  
Foraging Behavior ◽  
Natural Enemies ◽  
Host Plants ◽  
Pieris Brassicae ◽  
Cotesia Glomerata ◽  
Cabbage Butterfly ◽  
Larval Parasitoids

Effect of host-generated cues on foraging speed of herbivore as well as its natural enemies was studied under net house conditions in Meghalaya, India. Foraging speed of <em>P. brassicae</em> was significantly higher towards the healthy plants, whereas it was lowest towards the damaged plants along with herbivore cues. In contrast foraging speed of parasitoids <em>H. ebeninus </em>and<em> C. glomerata</em> was highest towards damaged plants along with herbivore cues and lowest towards healthy plants. It indicates that herbivore and its parasitoids respond to the volatiles generated by their host. In addition to host plants natural enemies also utilize herbivore-generated cues for their detection.

scholarly journals Comparison of the Parasitization of Chelonus inanitus L. (Hymenoptera: Braconidae) in Two Spodoptera Pests and Evaluation of the Procedure for Its Production

Insects ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 99
Author(s):  
Antonio Jesús Magaña ◽  
Beatriz Dáder ◽  
Gonzalo Sancho ◽  
Ángeles Adán ◽  
Ignacio Morales ◽  
...  
Keyword(s):  
Life Cycle ◽  
Body Size ◽  
Spodoptera Exigua ◽  
Mass Rearing ◽  
Host Age ◽  
Real Potential ◽  
Reproductive Parasitism ◽  
Larval Parasitoid ◽  
Natural Hosts ◽  
Factitious Host

Chelonus inanitus (L.) is an egg-larval parasitoid of noctuids Spodoptera exigua (Hübner) and S. littoralis (Boisduval), whose mass rearing or real potential has not been targeted yet. To improve the rearing in the factitious host Ephestia kuehniella Zeller, we investigated the influence of host age and number of females parasitizing simultaneously on the overall rearing success, the influence of host age on the life cycle, and the influence of host species on the parasitoid body size. The proportion of emerging C. inanitus was higher from young host eggs, but more females emerged from mature eggs. Under high parasitoid competition, we observed a reduction in non-parasitized hosts without reducing parasitoid emergence. The parasitoid life cycle was longer in females, but the mismatch between sexes was smaller in mature eggs. The parasitoid size was smaller in the factitious host than in the natural hosts. Under semi-field conditions, we investigated the competition among parasitoid females on the overall parasitism success. The reproductive parasitism was more successful in S. exigua than in S. littoralis, and the maximum emergence was reached with three and four females, respectively. The control of S. littoralis may be attributed to the high developmental mortality, a non-reproductive parasitism that is often underestimated.

scholarly journals Parasitoid Complex of Cabbage Large White Butterfly Pieris Brassicae (L.) (Lepidoptera, Pieridae) in Urmia with New Records from Iran

2011 ◽  
Vol 51 (3) ◽  
pp. 248-251 ◽  
Author(s):  
Mehdi Razmi ◽  
Yones Karimpour ◽  
Mohammad Safaralizadeh ◽  
Seyed Safavi
Keyword(s):  
New Records ◽  
Pieris Brassicae ◽  
Cotesia Glomerata ◽  
Raphanus Raphanistrum ◽  
Large White ◽  
Parasitoid Complex ◽  
Pteromalus Puparum ◽  
Capparis Spinosa ◽  
Northwest Of Iran ◽  
First Time

Parasitoid Complex of Cabbage Large White ButterflyPieris Brassicae(L.) (Lepidoptera, Pieridae) in Urmia with New Records from IranSurveys for parasitoids attacking larvae and pupae ofPieris brassicae(L.) (Lepidoptera: Pieridae) were conducted in theBrassicaagro-ecosystem in the Urmia region, northwest of Iran, between 2008 and 2009. Parasitized hosts were collected from infested plants placed inBrassicacrops during the growing season (June-October), and from the naturalP. brassicaepopulation on the common weedsCapparis spinosaL. (Capparaceae),Crambe orientalisL. (Brassicaceae) andRaphanus raphanistrumL. (Brassicaceae) during the summer production break (December). Ten species of primary parasitoids -Cotesia glomerata(L.) (Hym., Braconidae),Brachymeria femorataPanzer (Hym.: Chalcididae),Aprostocetus taxiGraham (Hym.: Eulophidae),Agrothereutes adustusGrav.,Blapsidotes vicinusGrav.,Hyposoter clausesBrischke (Hym.: Ichneumonidae),Pteromalus puparum(L.) (Hym.: Pteromalidae) andExorista larvarum(L.),Exorista segregataRondan,Phryxe vulgarisFallén (Dip.: Tachinidae) were identified. The most numerous wereP. puparum(with 49.65% in 2008 and 46.13% in 2009) andC. glomerata(with 43.45% and 45.57% in 2008 and 2009, respectively). The following species:A. adustus, A. taxi, B. vicinus, B. femorata, H. clausesandP. vulgaris, were newly recorded for the Iranian fauna. With the exception ofB. femorataandP. vulgaris, all of the above mentioned species were recorded for the first time as parasitoid onP. brassicaefrom Iran.

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