Optimal clutch size of the chestnut gall-wasp,Dryocosmus kuriphilus yasumatsu (Hymenoptera: Cynipidae)

1993 ◽  
Vol 35 (1) ◽  
pp. 1-14 ◽  
Author(s):  
Kazutaka Kato ◽  
Naoki Hijii
Keyword(s):  
Clutch Size ◽  
Gall Wasp ◽  
Dryocosmus Kuriphilus ◽  
Optimal Clutch Size

scholarly journals Optimal clutch size of the gall wasp Diplolepis rosae (Hymenoptera: Cynipidae)

2008 ◽  
Vol 19 (3) ◽  
pp. 168-175 ◽  
Author(s):  
Zoltán László ◽  
Béla Tóthmérész
Keyword(s):  
Survival Rate ◽  
Clutch Size ◽  
Frequency Distribution ◽  
Parasitism Rate ◽  
Gall Wasp ◽  
Gall Wasps ◽  
Optimal Clutch Size ◽  
Larval Emergence ◽  
Gall Inducer ◽  
Second Peak

Clutch size of the gall wasp Diplolepis rosae was studied in galls on Rosa spp. in Eastern Hungary and Romania, Transylvania on four dry pastures. We hypothesised that there was an optimal clutch size, and it was controlled by the emerging rate of the gall inducer and the escaping failure of hatched adults. The most frequent clutch size was 25–30 chambers, and there was a second peak around 60 chambers in each frequency distribution. The most common clutch size did not produce the highest proportion of larval emergence to adulthood. Parasitism rate decreased with increasing clutch size, while the proportion of emerged gall wasps increased and the proportion of dead individuals remained constant. The frequency distribution of clutch sizes was independent of parasitism, emerging failure or survival rate of the gall inducer. The escaping failure rate was also independent from the clutch size.

Is there an Optimal Clutch Size in Snow Geese?

1987 ◽  
Vol 130 (6) ◽  
pp. 839-863 ◽  
Author(s):  
R. F. Rockwell ◽  
C. S. Findlay ◽  
F. Cooke
Keyword(s):  
Clutch Size ◽  
Snow Geese ◽  
Optimal Clutch Size

Impact of the Asian gall wasp ( Dryocosmus kuriphilus ) on the radial growth of the European chestnut ( Castanea sativa ).

2021 ◽  
Author(s):  
Enrico Marcolin ◽  
Mario Pividori ◽  
Fernanda Colombari ◽  
Maria Chiara Manetti ◽  
Francesco Pelleri ◽  
...  
Keyword(s):  
Radial Growth ◽  
Castanea Sativa ◽  
Gall Wasp ◽  
Dryocosmus Kuriphilus ◽  
European Chestnut

Chemical Cues for Host Location by the Chestnut Gall Wasp, Dryocosmus kuriphilus

2010 ◽  
Vol 37 (1) ◽  
pp. 49-56 ◽  
Author(s):  
Giacinto S. Germinara ◽  
Antonio De Cristofaro ◽  
Giuseppe Rotundo
Keyword(s):  
Host Location ◽  
Chemical Cues ◽  
Gall Wasp ◽  
Dryocosmus Kuriphilus

scholarly journals The Diversity of Bacteria Associated with the Invasive Gall Wasp Dryocosmus kuriphilus, Its Galls and a Specialist Parasitoid on Chestnuts

Insects ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 86
Author(s):  
Xiaohui Yang ◽  
Yu Hui ◽  
Daohong Zhu ◽  
Yang Zeng ◽  
Lvquan Zhao ◽  
...  
Keyword(s):  
Pathogenic Bacteria ◽  
Plant Pathogens ◽  
High Throughput Sequencing ◽  
Bacterial Species ◽  
Gall Wasp ◽  
Potential Vector ◽  
Dryocosmus Kuriphilus ◽  
Torymus Sinensis ◽  
Galling Insects ◽  
First Time

Dryocosmus kuriphilus (Hymenoptera: Cynipidae) induces galls on chestnut trees, which results in massive yield losses worldwide. Torymus sinensis (Hymenoptera: Torymidae) is a host-specific parasitoid that phenologically synchronizes with D. kuriphilus. Bacteria play important roles in the life cycle of galling insects. The aim of this research is to investigate the bacterial communities and predominant bacteria of D. kuriphilus, T. sinensis, D. kuriphilus galls and the galled twigs of Castanea mollissima. We sequenced the V5–V7 region of the bacterial 16S ribosomal RNA in D. kuriphilus, T. sinensis, D. kuriphilus galls and galled twigs using high-throughput sequencing for the first time. We provide the first evidence that D. kuriphilus shares most bacterial species with T. sinensis, D. kuriphilus galls and galled twigs. The predominant bacteria of D. kuriphilus are Serratia sp. and Pseudomonas sp. Furthermore, the bacterial community structures of D. kuriphilus and T. sinensis clearly differ from those of the other groups. Many species of the Serratia and Pseudomonas genera are plant pathogenic bacteria, and we suggest that D. kuriphilus may be a potential vector of plant pathogens. Furthermore, a total of 111 bacteria are common to D. kuriphilus adults, T. sinensis, D. kuriphilus galls and galled twigs, and we suggest that the bacteria may transmit horizontally among D. kuriphilus, T. sinensis, D. kuriphilus galls and galled twigs on the basis of their ecological associations.

scholarly journals Population Dynamics and Tree Damage of the Invasive Chestnut Gall Wasp, Dryocosmus kuriphilus, in Its Southernmost European Distributional Range

Insects ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 900
Author(s):  
Javier Quinto ◽  
María Eva Wong ◽  
Juan Ramón Boyero ◽  
José Miguel Vela ◽  
Martin Aguirrebengoa
Keyword(s):  
Population Dynamics ◽  
Control Mechanisms ◽  
Gall Wasp ◽  
Local Conditions ◽  
Tree Damage ◽  
Dryocosmus Kuriphilus ◽  
Distributional Range ◽  
The Status ◽  
Spatio Temporal ◽  
Over Time

The invasive chestnut gall wasp (CGW), Dryocosmus kuriphilus, the worst pest of chestnut cultivation, has spread worryingly throughout Europe in less than 20 years. Despite the great concern around this pest, little is known about the status in its southernmost distribution in continental Europe. We assessed spatio-temporal patterns in the population dynamics, phenology and tree damage caused by CGW in southern Spain. Likewise, the relationship between these variables and thermal trends was evaluated. We found strong variation in the population dynamics and flight phenology among localities and over time, which were highly influenced by changes in thermal regimes. Specifically, warmer localities and vegetative periods promoted higher population densities, a partial increase in the survival of immature stages, and advanced flight activity. Moreover, tree damage evolved differently over time in each locality, which suggests that local conditions may determine differences in damage evolution. Our findings evidence that great spatio-temporal variability in the CGW populations takes place across invaded areas in its southernmost European distributional range. Although control mechanisms have been introduced, implementation of further control and management measures are critical to cope with this main threat for the chestnut industry and to prevent its spread to nearing chestnut-producing areas.

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