Dynamic virulence in a parasitoid wasp: the influence of clutch size and sequential oviposition on egg encapsulation

  title={Dynamic virulence in a parasitoid wasp: the influence of clutch size and sequential oviposition on egg encapsulation},
  author={Apostolos Kapranas and Alejandro Tena and Robert F. Luck},
  journal={Animal Behaviour},

Oviposition, Superparasitism, and Egg Load in the Solitary Parasitoid Diachasmimorpha longicaudata (Hymenoptera: Braconidae): Response to Host Availability

The effect of host density on egg load, oviposition, and sex ratio in the tephritid parasitoid Diachasmimorpha longicaudata (Ashmead) was investigated and suggested that parasitoids have a strategy for maintaining high egg load in order to mitigate egg limitation.

Tendency and consequences of superparasitism for the parasitoid Ooencyrtus pityocampae (Hymenoptera: Encyrtidae) in parasitizing a new laboratory host, Philosamia ricini (Lepidoptera: Saturniidae)

The tendency for self-superparasitism and it's effects on the quality of the parasitoid Ooencyrtus pityocampae (Mercet) in parasitizing a new laboratory host, Philosamia ricini (Danovan) (Lepidoptera: Saturniidae), were investigated and contribute to the development of an efficient mass rearing and laboratory rearing of the Parasitoids using a new host.

Facultative production of multiple-egg clutches in a quasi-gregarious parasitoid: fitness gains for offspring at low developmental temperature

The results suggest that female A. disparis adults produce multiple-egg clutches to increase the probability of obtaining offspring from the host, and may have the ability to regulate oviposition and reproduction strategy based on environmental temperature.

Optimal clutch size for quality control of bisexual and Wolbachia-infected thelytokous lines of Trichogramma dendrolimi Matsumura (Hymenoptera: Trichogrammatidae) mass reared on eggs of a substitutive host, Antheraea pernyi Guérin-Méneville (Lepidoptera: Saturniidae).

This data indicates that a medium brood size in a A. pernyi egg host was optimal to produce offspring parasitoids with higher fitness parameters for both bisexual Wolbachia-uninfected and thelytokous WolbachIA-infected lines of T. dendrolimi.

Biology and life table parameters of Metaphycus marensis Chirinos and Kondo, 2019, an encyrtid parasitoid of guava cottony scale in Venezuela

The short generation time of the parasitoid in relation to its eriococcid host could represent a desirable attribute as a natural enemy, however, the low fecundity and the encapsulation by the host must be analyzed through field experiments in order to evaluate its effectiveness as a biological control agent for C. linarosae.

Reproductive strategies and food sources used by Acerophagus n. sp. near coccois, a new successful parasitoid of the invasive mealybug Phenacoccus peruvianus

Some traits of the reproductive and feeding strategies of Acerophagus sp.

Response of life‐history traits to artificial and natural selection for virulence and nonvirulence in a Drosophila parastitoid, Asobara tabida

Virulence may not always be costly, but rather that different life histories associated with different levels of virulence may coexist at both intra‐ and interpopulation levels.

Description and Biological Studies of a New Species of Metaphycus Mercet, 1917 (Hymenoptera: Encyrtidae), A Parasitoid of Capulinia linarosae Kondo & Gullan

Results show a short adult longevity, as well as a relatively low fecundity of the female compared with studies conducted on other Metaphycus species, which provides essential baseline information for future biological control programmes for C. linarosae.



Factors influencing the evolution of clutch size in a gregarious insect parasitoid

The observed clutch size in newly emerged H. pallidus is consistent with a strategy of maximizing lifetime fitness gain rather than the gain from individual hosts (Lack clutch size) despite a significant investment in the time required to attack each host.

Prolonged oviposition decreases the ability of the parasitoid Leptopilina boulardi to suppress the cellular immune response of its host Drosophila melanogaster.

The reluctance of experienced wasps to infect hosts is not due to egg depletion, but instead is attributed to a depletion in immune suppressive substances.

Foraging and oviposition decisions in the parasitoid Aphytis lingnanensis : distinguishing the influences of egg load and experience

Clutch size decisions in the gregarious parasitoid A. lingnanensis clutch size decisions appeared to be fundamentally dynamic, responding to changes in parasitoids physiology (egg load) and the Parasitoid's perception of host availability (experience).

Clutch size decisions of a gregarious parasitoid under laboratory and field conditions

Observations suggest that, in contrast to lifetime fecundity measures from the laboratory, host-finding ability in the field provides a more accurate estimate of lifetime reproductive success for parasitoids with a low expectation of future reproduction.

The effects of parasitism by an encyrtid parasitoid, Anagyrus pseudococci on the survival, reproduction and physiological changes of the mealybug, Planococcus citri

SDS‐PAGE analysis of the body content of the parasitized mealybugs after 24 h and 48 h of parasitization and before egg hatch revealed an increase in the concentration of some proteins and the possible effect of parasitism on the changes of the reproductive physiology of the host is discussed.

Clutch size in an obligately siblicidal parasitoid wasp

It is argued here, however, that multiple-egg clutches and self-superparasitism are fundamentally different behaviour patterns, entailing different potential costs and benefits.

Host-parasite interactions between whiteflies and their parasitoids.

Interactions between aphelinid parasitoids and their aleyrodid hosts that are observed in four host-parasite systems are described, finding that the growth and development of the insects are directed by the appearance of new, young foliage on Arbutus andrachne, the host tree.

Egg maturation, egg resorption and the costliness of transient egg limitation in insects

The hypothesis that egg costs are generally less significant in synovigenic insects, which can replenish oocyte supplies through continuous egg maturation, is addressed and appears to broaden the range of conditions under which costly egg limitation occurs.