Payoff from Self and Conspecific Superparasitism in a Dryinid Parasitoid, Haplogonatopus atratus

Yamada, Yoshihiro; Miyamoto, Keiichi

doi:10.2307/3547042

Cited by 23 publications

(30 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Conspecific superparasitism, which involves ovipositing on or in a conspecifically parasitized host (van Dijken & Waage, ), is usually profitable, in that it rewards the parasitoid with a fitness gain, especially when the interval between the first and second ovipositions (i.e., the oviposition interval) is short (e.g., Visser et al ., ; Sirot, ; Field et al ., ; Lebreton et al ., ); however, the gain is less than that from ovipositing on or in a healthy host. Meanwhile, self‐superparasitism is generally considered less profitable than conspecific superparasitism due to the siblings facing competition for limited resources (e.g., Yamada & Miyamoto, ; Yamada & Watanabe, ; Yamada & Ikawa, ); in particular, it is usually non‐ or negatively profitable for solitary parasitoids except in cases where multiple parasitoid immatures guarantee a higher emergence probability of 1 adult, which is probably due to greater suppression of the immune systems of the host when multiple individuals are present (Puttler & van den Bosch, ). Thus, an ability to discriminate between self‐ and conspecifically parasitized hosts is expected to evolve (van Alphen & Visser, ).…”

Section: Introductionmentioning

confidence: 99%

Self‐/conspecific discrimination and superparasitism strategy in the ovicidal parasitoid Echthrodelphax fairchildii (Hymenoptera: Dryinidae)

Ito

Yamada

2014

Insect Science

Self Cite

View full text Add to dashboard Cite

Superparasitism in solitary parasitoids results in fatal competition between the immature parasitoids, and consequently only one individual can emerge. In the semisolitary ovicidal parasitoid Echthrodelphax fairchildii (Hymenoptera: Dryinidae), 2 adults can emerge under superparasitism with a short interval (<24 h) between the first and second ovipositions. We determined the female parasitoid's behavioral responses under self- and conspecific superparasitism bouts with first-to-second oviposition intervals of ≤2 h. The self- and conspecific superparasitizing frequencies increased up to an oviposition interval of 0.75 h, with the former remaining lower than the latter, particularly for oviposition intervals of ≤0.25 h, suggesting the existence of self-/conspecific discrimination. The superparasitizing frequency plateaued for oviposition intervals of ≥0.75 h, with no difference between self- and conspecific superparasitism. The ovicidal-probing frequency did not differ under self- and conspecific superparasitism, and was usually <20%. The females exhibited no preference for the oviposition side (i.e., ovipositing on the side with or without the first progeny) and almost always laid female eggs for any oviposition interval under self- and conspecific superparasitism. The sex ratio was not affected by the type of superparasitism, oviposition sides, or the occurrence of ovicidal probing. These observed results about the oviposition side, ovicidal probing, and sex ratios differed from the predictions obtained assuming that the females behave optimally. Possible reasons for the discrepancies are discussed: likely candidates include the high cost of selecting oviposition sides and ovicidal probing, and, for the sex ratio, the low frequency of encountering suitable hosts before superparasitism bouts.

show abstract

Section: Introductionmentioning

confidence: 99%

Self‐/conspecific discrimination and superparasitism strategy in the ovicidal parasitoid Echthrodelphax fairchildii (Hymenoptera: Dryinidae)

Ito

Yamada

2014

Insect Science

Self Cite

View full text Add to dashboard Cite

show abstract

“…Second comers are usually handicapped in competition (Salt, 1961; Vinson & Hegazi, 1998), and their probability of survival decreases as the interval between the first and second ovipositions increases, dropping to zero when the interval is 1–2 days (Strand & Godfray, 1989; Visser et al ., 1992; Sirot, 1996; Field et al ., 1997). Infanticide, including ovicide, is an effective method for overcoming this handicap (Yamada & Miyamoto, 1998; Yamada & Watanabe, 2002), and is selectively advantageous for parasitoids that are attempting to superparasitise. This is true for conspecific superparasitism (in which the mothers of the first and second comers are different) but not for self‐superparasitism (in which the mother of the first and second comers is the same).…”

Section: Introductionmentioning

confidence: 99%

Adaptive significance of facultative infanticide in the semi‐solitary parasitoid Echthrodelphax fairchildii

Yamada

Ikawa

2003

Ecological Entomology

Self Cite

View full text Add to dashboard Cite

Abstract. 1. This is the first work to show how imperfect kin recognition influences the behavioural strategy of parasitoids. 2. The female of Echthrodelphax fairchildii lays an egg on the right or left side of the host thorax. When superparasitising on the side without the first offspring, it often probed the opposite side with its sting and killed the first offspring more than 50% of the time. The frequency of probing increased with increasing inter‐oviposition interval, and was higher in conspecific superparasitism than in self superparasitism. 3. The adaptiveness of probing was assessed by the difference in fitness returns between superparasitism with probing and superparasitism without probing. Fitness returns from self‐superparasitism and those from conspecific superparasitism were assessed by the fitness performance of both first and second comers, and that of second comers respectively. 4. In terms of the survival rate of immatures (one fitness component), probing under conspecific superparasitism guaranteed higher fitness returns than not probing for longer oviposition intervals, but under self‐superparasitism not probing guaranteed higher fitness returns for shorter intervals because superparasitism for such intervals often resulted in two‐adult emergence. 5. In terms of head width (another fitness component), probing produced higher fitness returns for shorter oviposition intervals for both self and conspecific superparasitism. 6. Assuming that offspring quantity contributes more to fitness returns than does offspring quality, the observed frequencies of probing were considered adaptive for parasitoids whose abilities to distinguish between self and conspecifically parasitised hosts and to estimate inter‐oviposition intervals are imperfect.

show abstract

“…Those studies tracked single females, however, while we used small groups of parasitoid females. Two possible reasons for our results are (1) an elevated mature egg load in the females who have had multiple recent oviposition opportunities, stimulating high production, and (2) intra-specific competition for host eggs (Fletcher et al 1994;Yamada and Miyamoto 1998). Montoya et al (2000), studying mass reared D. longicaudata, found an inverse relationship between superparasitism and parasitoid emergence.…”

Section: Discussionmentioning

confidence: 82%

Effect of Fopius arisanus oviposition experience on parasitization of Bactrocera dorsalis

2017

View full text Add to dashboard Cite

Fopius arisanus (Sonan) (Hymenoptera: Braconidae) is an important fruit fly parasitoid, successfully introduced in programs of classical biological control around the world. One aspect of its reproductive biology that has received increasing attention is the role of learning on parasitization by individual females. In this study, we examined the effect of previous oviposition opportunities on the reproductive success and progeny sex ratio of F. arisanus on eggs of Bactrocera dorsalis Hendel (Diptera: Tephritidae). Our results indicate that the proportion of eggs parasitized and parasitoid yield both increase with increasing experience, as acquired by individual females via previous oviposition opportunities. These effects are shown to be unrelated to parasitoid age out to three weeks, which we found not to have an effect on parasitization, yield, or sex ratio. We discuss the implications of our results on mass rearing and also in terms of the efficiency of this biological control agent in the field.

show abstract

Payoff from Self and Conspecific Superparasitism in a Dryinid Parasitoid, Haplogonatopus atratus

Cited by 23 publications

References 28 publications

Self‐/conspecific discrimination and superparasitism strategy in the ovicidal parasitoid Echthrodelphax fairchildii (Hymenoptera: Dryinidae)

Self‐/conspecific discrimination and superparasitism strategy in the ovicidal parasitoid Echthrodelphax fairchildii (Hymenoptera: Dryinidae)

Adaptive significance of facultative infanticide in the semi‐solitary parasitoid Echthrodelphax fairchildii

Effect of Fopius arisanus oviposition experience on parasitization of Bactrocera dorsalis

Contact Info

Product

Resources

About