Host Stage Selection and Suitability in Cephalonomia stephanoderis Betrem (Hymenoptera: Bethylidae), a Parasitoid of the Coffee Berry Borer

Lauzière, Isabelle; Brodeur, Jacques; Pérez‐Lachaud, Gabriela

doi:10.1006/bcon.2000.0909

Cited by 23 publications

(21 citation statements)

References 16 publications

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“…S. harmandi is a synovigenic anautogenous species (i.e., oogenesis takes place after females feed on hosts and are stimulated by direct access to suitable hosts for oviposition) [9]. The pre-oviposition period usually lasts several days according to host species.…”

Section: Introductionmentioning

confidence: 99%

Host-Size Mediated Trade-Off in a Parasitoid Sclerodermus harmandi

Liu

et al. 2011

PLoS ONE

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Optimality models of host-parasitoid relationships have traditionally assumed that host quality increases as a function of host size at parasitism. However, trade-offs may play a crucial role in species evolution and should be found in host-parasitoid interactions where the host quality may differ between different sizes. Here, we investigated the effects of host size differences of Monochamus alternatus larva on foraging decisions, parasitism and related fitness in a gregarious ectoparasitoid, Sclerodermus harmandi. Two-choice and non-choice experiments were conducted with M. alternatus larvae to evaluate preference and performance of S. harmandi, respectively. Results from two-choice test showed that adult females prefer to attack large larvae rather than small larvae. In no-choice tests, adult females needed more time to paralyze large larvae than small larvae before laying eggs on the body surface of M. alternatus larvae and had lower survival and parasitism rate on those large larvae. Foraging decisions of S. harmandi led to the selection of the most profitable host size for parasitoid development, which showed more offspring gained on large M. alternatus larvae than on small larvae and got higher body weight on those large hosts. This study demonstrates the existence of trade-off occurring during host-parasitoids interactions according to host size related quality.

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Section: Introductionmentioning

confidence: 99%

Host-Size Mediated Trade-Off in a Parasitoid Sclerodermus harmandi

Liu

et al. 2011

PLoS ONE

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“…S. harmandi is a synovigenic anautogenous species in which oogenesis takes place after females feed on hosts and is stimulated by direct access to suitable hosts for oviposition [8], [15]. Because host meals are essential for oogenesis throughout the reproductive lifetime, parasitoids are often considered to have inherent parental conflicts of interest vis-à-vis their progeny [16]–[17].…”

Section: Introductionmentioning

confidence: 99%

Host Suitability of a Gregarious Parasitoid on Beetle Hosts: Flexibility between Fitness of Adult and Offspring

Sun

2011

PLoS ONE

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Behavioral tactics play a crucial role in the evolution of species and are likely to be found in host-parasitoid interactions where host quality may differ between host developmental stages. We investigated foraging decisions, parasitism and related fitness in a gregarious ectoparasitoid, Sclerodermus harmandi in relation to two distinct host developmental stages: larvae and pupae. Two colonies of parasitoids were reared on larvae of Monochamus alternatus and Saperda populnea (Cerambycidae: Lamiinae). Paired-choice and non-choice experiments were used to evaluate the preference and performance of S. harmandi on larvae and pupae of the two species. Foraging decisions and offspring fitness-related consequences of S. harmandi led to the selection of the most profitable host stage for parasitoid development. Adult females from the two colonies oviposited more quickly on pupae as compared to larvae of M. alternatus. Subsequently, their offspring development time was faster and they gained higher body weight on the pupal hosts. This study demonstrates optimal foraging of intraspecific détente that can occur during host-parasitoid interactions, of which the quality of the parasitism (highest fitness benefit and profitability) is related to the host developmental stage utilized. We conclude that S. harmandi is able to perfectly discriminate among host species or stages in a manner that maximizes its offspring fitness. The results indicated that foraging potential of adults may not be driven by its maternal effects, also induced flexibly with encountering prior host quality.

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“…Yang and Wan (2011) report that E. hayati females prefer younger to older hosts for both feeding and oviposition. These findings contradict the general predictions for feeding and oviposition strategies, which suggest that when hosts of different stages are present, a parasitoid should select lower quality hosts for feeding and higher quality hosts for oviposition (Kidd and Jervis, 1991;Chan and Godfray, 1993;Heimpel and Rosenheim, 1995;Lauzière et al, 2001). However, among the preferred mid-aged hosts, E. warrae parasitized six to seven times more nymphs than fed when all instars were present (Table 1) and parasitized about five times more nymphs than fed in the single-instar experiment (Fig.…”

Section: Host Instarsmentioning

confidence: 60%

“…Due to the destructive nature of feeding, Eretmocerus females must have developed strategies to partition the use of hosts for feeding and oviposition. General models predict that a foraging parasitoid should select lower quality hosts for feeding and higher quality ones for oviposition (Kidd and Jervis, 1991;Chan and Godfray, 1993;Heimpel and Rosenheim, 1995;Lauzière et al, 2001). However, female parasitoids prefer hosts of similar stages for both feeding and oviposition in E. melanoscutus Zolnerowich and Rose (Zang and Liu, 2008) and E. hayati Zolnerowich and Rose (Yang and Wan, 2011).…”

Section: Introductionmentioning

confidence: 99%