Effect of parent density on fecundity of two parasitoids [Hym.: Pteromalidae] of the olive beetle,Phloeotribus scarabaeoides [Col.: Scolytidae]

  title={Effect of parent density on fecundity of two parasitoids [Hym.: Pteromalidae] of the olive beetle,Phloeotribus scarabaeoides [Col.: Scolytidae]},
  author={Manuel Campos and Ram{\'o}n Gonz{\'a}lez},
Under laboratory conditions (22±2°C, 60%±5% H.R.; and 16L.: 8D. photoperiod), the rearing of the 2 main parasitoids ofPhloeotribus scarabaeoides (Bernard, 1788) in Southern Spain:Cheiropachus quadrum (Fabricius, 1787) andRaphitelus maculatus Walker, 1834 (Hym.: Pteromalidae) has been carried out. Several densities of population of the parasitoids have been tested in order to determine their reproductive behaviour, and this is significant if the output of a rearing is to be increased. A great… 

Observations on the reproductive biology of two parasites ofHylesinus varius andPhloeotribus scarabaeoides (Col: Scolytidae): Cheiropachus quadrum (Hym: Pteromalidae) andDendrosoter protuberans (Hym: Braconidae)

The results obtained in this study can be considered essential in the development of a biological control system for olive bark beetle pests based on an increase in the population of C. quadrum and D. protuberans.


The performance of the parasitoids at different density on three host plants Lablab purpureus (=Dolichos lablab), Phaseolus sinensis and Vicia faba on A. craccivora was investigated and the maximum fecundity of L. oregmae was recorded on V. faba and the minimum on P. sinensis.

Research on Parasitoids and Predators of Scolytidae – A Review

This review will focus primarily on parasitoids and predators of bark beetle species considered to be pests of living trees in Europe, although it may also consider relevant research in other continents.

Bark and Wood Boring Insects in Living Trees in Europe, a Synthesis

General Conclusions and Research Priorities for Bawbilt Organisms in Europe.

Mass‐rearing optimization of the parasitoid Psyttalia lounsburyi for biological control of the olive fruit fly

A number of ways to improve the efficiency of rearing were developed, including the frequency and duration of exposure for oviposition, optimizing the density of adult parasitoids, host age, as well as methods to quickly standardize the number of larvae exposed and to count emerging adult parasIToids.



Influence of breeding conditions on longevity and fecundity ofRaphitelus maculatus [Hym.: Pteromalidae] reared under standard laboratory conditions

3 emergence periods has been observed from which the 1st is the most important and the 3rd is always the less significantly one, provided that the emerging brood cannot oviposits easier than the parents due to a decrease on host larvae proportion as well as on parasitoid fecundity.

Effects of Food, Temperature, and Breeding Conditions on the Life Span of Adults of Three Cohabitating Bark Beetle (Scolytidae) Parasitoids (Hymenoptera)

It is suggested that an increase in tree species diversity in the stands might have diversified and increased food sources for adult parasitoids.

Hymenopterous parasitoids of bark beetles [Scolytidae] in Israel: Relationships between host and parasitoid size, and sex ratio

Females were more numerous during the larvae development while males were more abundant between the pupal stage and emergence of the host, and the sex-ratio of parasitoids trapped on sticky traps varied with time in relation to the phenology of theHost beetle.

Hymenopterous parasitoids of bark beetles [Scolytidae] in Israel: Host relation, host plant, abundance and seasonal history

Information concerning the seasonal history of the parasitoids suggests that the major species may raise about 5 to 7 annual generations, whereas relatively polyphagous parasitoidal species vary in abundance among different host populations.

On the Inadequacy of Simple Models of Mutual Interference for Parasitism and Predation

It is argued that 'interference' in the field can arise from both behavioural interactions and the effect of non-random search for aggregated hosts, and is called 'pseudo-interference'.

General models for insect parasite and predator searching behaviour: interference

Two analytical models are derived for different components of interference in living insect parasites, supported by laboratory observations and by a simulation model for host-parasite interactions.

Mutual Interference Between Parasites or Predators and its Effect on Searching Efficiency

A number of experiments indicate that a basic assumption implicit in early population models of predator-prey and parasite-host interactions is false.

Labile Sex Ratios in Wasps and Bees

Recent work on sex allocation in wasps and bees is described, which shows an impressive ability to control the sex of their offspring (facultative or labile sex-ratio control).

New Inductive Population Model for Insect Parasites and its Bearing on Biological Control

Mutual interference between searching insect parasites provides theoretical support for current biological control practices and helps clarify the role of ‘spatially aggregating’ immune defences.