scholarly journals Biological traits of Quadrastichus mendeli (Hymenoptera, Eulophidae), parasitoid of the eucalyptus gall wasp Leptocybe invasa (Hymenoptera, Eulophidae) in Thailand

Parasite ◽  
2019 ◽  
Vol 26 ◽  
pp. 8
Author(s):  
Benjakhun Sangtongpraow ◽  
Kosol Charernsom
Keyword(s):  
Developmental Time ◽  
Egg Load ◽  
Biological Traits ◽  
Female Size ◽  
Gall Wasp ◽  
Potential Fecundity ◽  
The Mean ◽  
Leptocybe Invasa ◽  
Eucalyptus Gall Wasp ◽  
Honey Solution

Quadrastichus mendeli Kim & La Salle, a parasitoid of Leptocybe invasa Fisher & La Salle, is a uniparental species. This study assessed the biological traits of Q. mendeli in the laboratory at a temperature of 27 ± 1 °C. Diets had a highly significant effect on the mean longevity of female Q. mendeli. Feeding honey solution prolonged the mean longevity of the parasitoid to 4.80 days. The estimated 50% survival period was 3 days. The mean potential fecundity in all ages was 8.85 eggs per female. Age had a highly significant effect on the mean egg load. There was a positive relationship between egg load and female size. The mean of realized fecundity throughout the life span was 2.47 progenies per female. The mean developmental time of Q. mendeli from the egg to adult stage was 27.06 days. The shorter developmental time of Q. mendeli in comparison to its host can be considered a reason for the successful control of L. invasa in Thailand.

scholarly journals Taxonomy, biology, and efficacy of two Australian parasitoids of the eucalyptus gall wasp, Leptocybe invasa Fisher & La Salle (Hymenoptera: Eulophidae: Tetrastichinae)

Zootaxa ◽  
2008 ◽  
Vol 1910 (1) ◽  
pp. 1-20 ◽  
Author(s):  
IL-KWON KIM ◽  
ZVI MENDEL ◽  
ALEXEY PROTASOV ◽  
DANIEL BLUMBERG ◽  
JOHN LA SALLE
Keyword(s):  
Biological Control ◽  
Control Program ◽  
Biological Control Agents ◽  
Gall Wasp ◽  
Fast Tracking ◽  
New Synonyms ◽  
Leptocybe Invasa ◽  
Eucalyptus Gall Wasp ◽  
Honey Solution ◽  
Tracking Behavior

Two species of Tetrastichinae (Hymenoptera: Eulophidae) from Australia are described as parasitoids of Leptocybe invasa Fisher & La Salle: Quadrastichus mendeli Kim & La Salle sp.nov. and Selitrichodes kryceri Kim & La Salle sp. nov. These parasitoids were introduced to Israel as part of a biological control program to counter the severe levels of damage caused by L. invasa to Eucalyptus plantations throughout the Mediterranean Basin. The biology of these species, as well as their potential as biological control agents, is discussed. Both species are now successfully established in Israel. The parasitoids were collected from L. invasa galls on 3–4 year old Eucalyptus tereticornis trees in central west Queensland, between Gympie and Hervey Bay, and on the Atherton Tableland. Both species are small (about 1 mm in length), solitary, and apparently ectoparasitic wasps. S. kryceri is biparental whereas Q. mendeli is uniparental. Maximum survival (~ 6 days at 25°C) for both species was obtained when they were fed with honey solution. S. kryceri and Q. mendeli successfully parasitized approximately 2.2 and 2.5 gall units per day, respectively. Both species developed on both young and mature host larvae. L. invasa may be considered as an early colonizer of regenerated young stands in Australia, which may imply that its parasitoids will display a similar fast-tracking behavior with respect to their host in its invasive range. The generic status of Selitrichodes is reinstated, with Epomphaloides and Zagrammosomoides placed as new synonyms of Selitrichodes.

Ovigeny strategy of the parasitic wasp Cosmocomoidea annulicornis (Hymenoptera: Mymaridae): effect of female age, feeding and host availability on reproductive traits

2021 ◽  
pp. 1-8
Author(s):  
Carolina Manzano ◽  
Eduardo G. Virla ◽  
Maria V. Coll Araoz ◽  
Erica Luft-Albarracin
Keyword(s):  
Body Size ◽  
Parasitic Wasp ◽  
Reproductive Potential ◽  
Reproductive Traits ◽  
Egg Load ◽  
Biological Traits ◽  
Potential Fecundity ◽  
Female Age ◽  
Host Availability ◽  
Egg Maturation

Abstract The reproductive traits of the mymarid wasp Cosmocomoidea annulicornis (Ogloblin) (Hymenoptera: Mymaridae) attacking eggs of the sharpshooter Tapajosa rubromarginata (Signoret) (Hemiptera: Cicadellidae) were evaluated under laboratory conditions. Bioassays were carried out to estimate the realized fecundity and egg load of females. The ovigeny index was calculated and different biological traits, such as body size, oöcyte length, gaster length and wing length, were analysed to assess significant associations between these traits and the species fitness. In addition, the effect of host availability and feeding on longevity and potential fecundity throughout life and the effect of female age on egg maturation dynamics were assessed. The results showed that C. annulicornis is a strongly synovigenic species. A positive correlation was found between fecundity and longevity of the females and between body size and oöcyte length. Contrary to expected, body size was not related to fecundity and longevity. Females lived significantly longer in the presence of hosts and honey than when they were host-deprived and honey-fed or both host and honey deprived. Host availability had a significant effect on the amount of eggs laid by C. annulicornis females. Female age was negatively associated with oöcyte length. Furthermore, females were able to mature additional eggs as they aged, nevertheless, when host-deprived, senescent females presented significantly less mature eggs than younger ones, suggesting a possible egg oosorption. These results might contribute to a better understanding of the reproductive potential of this species as a biocontrol agent.

scholarly journals First record of the eucalyptus gall wasp, Leptocybe invasa Fisher and La Salle (Hymenoptera: Eulophidae), in Iraq

2012 ◽  
Vol 65 (3) ◽  
pp. 93-98 ◽  
Author(s):  
Feyroz R. Hassan
Keyword(s):  
New Genus ◽  
Eucalyptus Camaldulensis ◽  
First Record ◽  
Kurdistan Region ◽  
New Genus And Species ◽  
Gall Wasp ◽  
Leptocybe Invasa ◽  
Eucalyptus Gall Wasp ◽  
First Time

The eucalyptus gall wasp, <em>Leptocybe invasa </em>(Hymenoptera: Eulophidae), is a new genus and species recorded for the first time in Duhok city, Kurdistan region, Iraq. <em>L. invasa </em>makes galls on petioles, leaf midribs and young branches of <em>Eucalyptus camaldulensis </em>saplings and trees. This galling eventually can lead to heavily injured saplings. The average number of galls was 37.23 gall/branch, and major infestation was on leaf midribs with an average of 19.35 galls.

scholarly journals First record of eucalyptus gall wasp Leptocybe invasa (Hymenoptera: Eulophidae) in Mexico

2015 ◽  
Vol 86 (4) ◽  
pp. 1095-1098 ◽  
Author(s):  
Juan Manuel Vanegas-Rico ◽  
José Refugio Lomeli-Flores ◽  
Esteban Rodríguez-Leyva ◽  
Eduardo Jiménez-Quiroz ◽  
Juli Pujade-Villar
Keyword(s):  
First Record ◽  
Gall Wasp ◽  
Leptocybe Invasa ◽  
Eucalyptus Gall Wasp

Biology and host preference of Selitrichodes neseri: A potential biological control agent of the Eucalyptus gall wasp, Leptocybe invasa

2014 ◽  
Vol 78 ◽  
pp. 33-41 ◽  
Author(s):  
Gudrun Dittrich-Schröder ◽  
Marlene Harney ◽  
Stefan Neser ◽  
Tanya Joffe ◽  
Samantha Bush ◽  
...  
Keyword(s):  
Biological Control ◽  
Host Preference ◽  
Biological Control Agent ◽  
Control Agent ◽  
Gall Wasp ◽  
Leptocybe Invasa ◽  
Eucalyptus Gall Wasp

scholarly journals EUCALYPTUS GALL WASP, Leptocybe invasa FISHER & LASALLE (HYMENOPTERA: EULOPHIDAE) IN BRAZIL: NEW FOREST PEST REACHES THE NEW WORLD

2015 ◽  
Vol 83 (2) ◽  
pp. 136
Author(s):  
Valmir Antonio Costa ◽  
Evoneo Berti Filho ◽  
Carlos Frederico Wilcken ◽  
José Luiz Stape ◽  
John LaSalle ◽  
...  
Keyword(s):  
New World ◽  
Forest Pest ◽  
Gall Wasp ◽  
Leptocybe Invasa ◽  
New Forest ◽  
Eucalyptus Gall Wasp

scholarly journals Biological control of eucalyptus Gall wasp, Leptocybe invasa Fisher & La Salle (Hymenoptera: Eulophidae) in Punjab, India

2020 ◽  
Vol 5 (2) ◽  
pp. 105-113
Author(s):  
Mohd. Yousuf ◽  
Sudhir Singh ◽  
Mohsin Ikram ◽  
Salman Khan
Keyword(s):  
Biological Control ◽  
Type Species ◽  
Biological Control Agents ◽  
Gall Wasp ◽  
Leptocybe Invasa ◽  
Eucalyptus Gall Wasp

In this investigation, biological control of eucalyptus Gall wasp, Leptocybe invasa Fisher & La Salle (Hymenoptera: Eulophidae) in Punjab, India was investigated. The genus Leptocybe Fisher & La Salle (Hymenoptera: Eulophidae) was founded with its type species, L. invasa from Israel in 2004. Adult wasps of L. invasa   induce galls on the shoots and midribs of leaves of Eucalyptus sp. and also damage nursery seedlings and young plantations. In the present study, survey was carried out from the year 2012 to 2014, on gall wasp infestation in different eucalyptus growing areas of Punjab. Observations  revealed  that  eucalyptus  growing  areas  in  Punjab were  under  the threat  of  attack  by  gall  wasp,  L. invasa.  During the present study, biological control agents Megastimus viggianii and Quadrastichus mendeli have been successfully applied in the gall infested areas of Punjab, from 2012 to 2017, where infestation of gall wasp was regularly decreased and came below 10 % by July, 2017. Consequently, Eucalyptus gall forming insect L. invasa has been controlled successfully by applying the biological control through releasing the parasitoids (Megastimus viggianii and Quadrastichus mendeli), in Punjab, India.

Sign in / Sign up

Export Citation Format

Share Document