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

Taxonomy of inquilines of oak gall wasps of Panama, with description of eight new species of Synergus Hartig (Hymenoptera, Cynipidae, Synergini)

Zootaxa ◽  
2011 ◽  
Vol 2774 (1) ◽  
pp. 1 ◽  
Author(s):  
JOSE LUIS NIEVES-ALDREY ◽  
ENRIQUE MEDIANERO
Keyword(s):  
Cluster Analysis ◽  
New Species ◽  
Single Species ◽  
Palaearctic Species ◽  
Gall Wasp ◽  
Gall Wasps ◽  
First Time

This paper reports the first study of the inquiline oak gall wasp fauna of Panama. Samples were collected at 19 sites in Panama, and inquiline specimens were reared from 63 gall morphotypes, including six species of Quercus, mainly Q. salicifolia and Q. bumelioides. Two genera were found: Synergus, represented by 10 species, and the recently described genus Agastoroxenia Nieves-Aldrey & Medianero, with a single species, A. panamensis Nieves-Aldrey & Medianero. Synergus was recorded for the first time in Panama; Synergus mesoamericanus and Synergus nicaraguensis, which were formerly recorded from Guatemala and Nicaragua, have now been recorded in Panama, and eight new species of Synergus are described here: Synergus elegans, S. laticephalus, S. ramoni, S. rufinotaulis, S. luteus, S. gabrieli, S. baruensis and S. chiricanus. A key for the identification of the studied fauna is provided. An overall similarity cluster analysis of the inquilines of oak gall wasps of Panama, including one Neotropical and two Palaearctic species as outgroups, is included.

Notes on the larval morphology of Pteromalidae (Hymenoptera: Chalcidoidea) species parasitoids of gall wasps (Hymenoptera: Cynipidae) in Europe

Zootaxa ◽  
2012 ◽  
Vol 3189 (1) ◽  
pp. 39 ◽  
Author(s):  
JOSE F. GÓMEZ ◽  
JOSE LUIS NIEVES-ALDREY
Keyword(s):  
Comparative Study ◽  
Body Shape ◽  
Larval Morphology ◽  
Gall Wasp ◽  
Larval Body ◽  
Diagnostic Characters ◽  
Gall Wasps ◽  
First Time ◽  
Scanning Electron

A comparative study of the larval morphology and biology of Arthrolytus glandium Bouček, Cecidostiba fungosa Geof-froy in Fourcroy, Cecidostiba geganius (Walker), Pteromalus bedeguaris (Thomson), Pteromalus hieracii (Thomson),Pteromalus isarchus Walker, Rivasia fumariae Askew & Nieves-Aldrey and Stinoplus lapsanae Graham (Pteromalidae)is presented. These eight species are all parasitoids of gall wasps in Europe and are components of communities associatedwith different gall-wasp food guilds: galls on herbs, shrubs and oaks. Special attention was paid to larval body shape, headcapsule characters, the mouthparts and especially the mandibles and the chaetotaxy of the head. Diagnostic characters ofthe genera are provided and except for R. fumariae the terminal instar larvae of all studied species are described and illus-trated for the first time with scanning electron photomicrographs. Information on the biology of each species, including new rearing records, is given.

Competition, the Fitness of Offspring, and Optimal Clutch Size

1975 ◽  
Vol 109 (970) ◽  
pp. 677-699 ◽  
Author(s):  
Warren Y. Brockelman
Keyword(s):  
Clutch Size ◽  
Optimal Clutch Size

scholarly journals Invertebrate Community Associated with the Asexual Generation of Bassettia pallida Ashmead (Hymenoptera: Cynipidae)

2020 ◽  
Author(s):  
Kelly L. Weinersmith ◽  
Andrew A. Forbes ◽  
Anna K.G. Ward ◽  
Pedro F. P. Brandão-Dias ◽  
Y. Miles Zhang ◽  
...  
Keyword(s):  
Natural Enemies ◽  
Gulf Coast ◽  
Insect Communities ◽  
Gall Wasp ◽  
Major Question ◽  
Wasp Species ◽  
Asexual Generation ◽  
Gall Wasps ◽  
Diverse Community ◽  
Future Work

AbstractCynipid gall wasps play an important role in structuring oak invertebrate communities. Wasps in the Cynipini tribe typically lay their eggs in oaks (Quercus L.), and induce the formation of a “gall”, which is a tumor-like growth of plant material that surrounds the developing wasp. As the wasp develops, the cynipid and its gall are attacked by a diverse community of natural enemies, including parasitoids, hyperparasitoids, and inquilines. Determining what structures these species-rich natural enemy communities across cynipid gall wasp species is a major question in gall wasp biology. Additionally, gall wasps are ecosystem engineers, as the abandoned gall is used by other invertebrates. The gall-associated insect communities residing on live oaks (Quercus geminata Small and Q. virginiana Mill.) are emerging as a model system for answering ecological and evolutionary questions ranging from community ecology to the evolution of new species. Documenting the invertebrates associated with cynipids in this system will expand our understanding of the mechanisms influencing eco-evolutionary processes, record underexplored axes of biodiversity, and facilitate future work. Here, we present the community of natural enemies and other associates of the asexual generation of the crypt gall wasp, Bassettia pallida Ashmead. We compare the composition of this community to communities recently documented from two other cynipid gall wasps specializing on live oaks along the U.S. Gulf coast, Disholcaspis quercusvirens Ashmead and Belonocnema treatae Mayr. B. pallida and their crypts support a diverse arthropod community, including over 25 parasitoids, inquilines, and other associated invertebrates spanning 5 orders and 16 families.

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