scholarly journals Complex inheritance of larval adaptation in Plutella xylostella to a novel host plant

Heredity ◽  
2011 ◽  
Vol 107 (5) ◽  
pp. 421-432 ◽  
Author(s):  
K Henniges-Janssen ◽  
A Reineke ◽  
D G Heckel ◽  
A T Groot
Keyword(s):  
Host Plant ◽  
Plutella Xylostella ◽  
Novel Host ◽  
Complex Inheritance

Oviposition of diamondback moth in the presence and absence of a novel host plant

2010 ◽  
Vol 101 (1) ◽  
pp. 99-105 ◽  
Author(s):  
K. Henniges-Janssen ◽  
G. Schöfl ◽  
A. Reineke ◽  
D.G. Heckel ◽  
A.T. Groot
Keyword(s):  
Host Range ◽  
Larval Development ◽  
Host Plant ◽  
Plutella Xylostella ◽  
Range Expansion ◽  
Host Plants ◽  
Diamondback Moth ◽  
Host Range Expansion ◽  
Cabbage Plant ◽  
Novel Host

AbstractThe diamondback moth (DBM, Plutella xylostella L. (Lepidoptera: Plutellidae)) consumes a wide variety of brassicaceous host plants and is a common pest of crucifer crops worldwide. A highly unusual infestation of a sugar pea crop was recorded in Kenya in 1999, which persisted for two consecutive years. A strain (DBM-P) from this population was established in the laboratory and is the only one of several strains tested that can complete larval development on sugar peas. The oviposition acceptance and preference of the DBM-P strain was assessed in the presence of cabbage plants, sugar pea plants or both, in comparison to another strain (DBM-Cj) that was collected from cabbage and is unable to grow on pea plants. As expected, DBM-Cj females preferred to oviposit on cabbage plants. Surprisingly, DBM-P females also laid most eggs on cabbage and very few on peas. However, they laid significantly more eggs on the cabbage plant when pea plants were present. Our findings suggest that DBM-P manifested the initial stages of an evolutionary host range expansion, which is incomplete due to lack of oviposition fidelity on pea plants.

Effects of Two Cultivated Brassica spp. on the Development and Performance of Diadegma semiclausum (Hymenoptera: Ichneumonidae) and Cotesia vestalis (Hymenoptera: Braconidae) Parasitizing Plutella xylostella (Lepidoptera: Plutellidae) in Kenya

2019 ◽  
Vol 112 (5) ◽  
pp. 2094-2102 ◽  
Author(s):  
Ruth Kahuthia-Gathu ◽  
Stephen T O Othim
Keyword(s):  
Host Plant ◽  
Plutella Xylostella ◽  
Development Time ◽  
Trophic Levels ◽  
Pupal Weight ◽  
Vegetable Production ◽  
Diadegma Semiclausum ◽  
Cotesia Vestalis ◽  
Positive Effects ◽  
And Performance

AbstractThe diamondback moth (DBM), Plutella xylostella L., is the most destructive pest affecting vegetable production in Kenya and around the world. Parasitoids have shown promising results in lowering the pest populations and damage caused by DBM. However, variations in host plant quality have been reported to have bottom-up effects up to the third and fourth trophic levels. We assessed the effects of two cultivated Brassica varieties (cabbage, Brassica oleracea var. capitata L. cultivar ‘Gloria F1’ and kale, B. oleracea var. acephala L. cultivar ‘Thousand headed’) on the development and performance of the specialist pest P. xylostella and two exotic parasitoids Diadegma semiclausum (Hellen) and Cotesia vestalis (Haliday). The exposed larval period of DBM took about 1.5 d longer on kale than cabbage and the total immature development time of both females and males was significantly longer on kale than cabbage. Higher pupal weight and higher fecundity were recorded on DBM fed on kale. Development time of D. semiclausum and C. vestalis was not affected by the host crop as was the parasitism rate of D. semiclausum. Heavier male pupae and larger adults of D. semiclausum, as well as more fecund adults of C. vestalis, were obtained from hosts fed on cabbage. Larger adults of C. vestalis were obtained from herbivores fed on kale. These results show potentially positive effects of host plant allelochemicals that are detrimental to herbivores while promoting parasitoid development and performance, which can be harnessed for the control of DBM.

scholarly journals Genetic basis for established and novel host plant use in a herbivorous ladybird beetle, Epilachna vigintioctomaculata

1999 ◽  
Vol 91 (1) ◽  
pp. 245-250 ◽  
Author(s):  
Hideki Ueno ◽  
Naoyuki Fujiyama ◽  
Kiyoshi Irie ◽  
Yuji Sato ◽  
Haruo Katakura
Keyword(s):  
Host Plant ◽  
Genetic Basis ◽  
Ladybird Beetle ◽  
Plant Use ◽  
Novel Host ◽  
Host Plant Use

scholarly journals Inbreeding and learning affect fitness and colonization of new host plants, a behavioral innovation in the spider mite Tetranychus urticae

2021 ◽  
Author(s):  
Caroline M. Nieberding ◽  
Aubin Kaisin ◽  
Bertanne Visser
Keyword(s):  
Genetic Variability ◽  
Host Plant ◽  
Tetranychus Urticae ◽  
Spider Mite ◽  
Extinction Risk ◽  
Natural Populations ◽  
Learning Ability ◽  
Plant Colonization ◽  
New Host ◽  
Novel Host

Habitat fragmentation increases the isolation of natural populations resulting in reduced genetic variability and increased species extinction risk. Behavioral innovation through learning, i.e., the expression of a new learned behavior in a novel context, can help animals colonize new suitable and increasingly fragmented habitats. It has remained unclear, however, how reduced genetic variability affects learning for colonizing more or less suitable habitats. Here, we show that inbreeding in a subsocial invertebrate, the spider mite Tetranychus urticae, reduces novel host plant colonization and reproductive fitness. When provided with the possibility to learn from previous experience with a host plant species, outbred mites showed aversive learning ability, but inbred mites did not adapt their behavior. We further found a putative general cost of learning in both inbred and outbred mites. Our results reveal that inbreeding affects the learning component of behavioral innovation for host plant colonization.

Parasitism of Plutella xylostella L. Feeding on a New Host Plant

2006 ◽  
Vol 35 (5) ◽  
pp. 1350-1357 ◽  
Author(s):  
A. Rossbach ◽  
B. Löhr ◽  
S. Vidal
Keyword(s):  
Host Plant ◽  
Plutella Xylostella ◽  
New Host
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