Abstract
The term 'idiobiont' refers to those parasitoid species that permanently paralyse their hosts during parasitism, causing the cessation of host growth and development. This is in contrast to koinobiont parasitoids, which allow their hosts to continue developing after being parasitized. While no koinobiont species induce permanent paralysis in their hosts, a minority of koinobionts induce a temporary paralysis that does not interfere with overall host growth and development. We characterized transient paralysis induction in two koinobiont aphid parasitoids in the genus Binodoxys (Hymenoptera: Aphidiinae). Both Binodoxys species induced transient paralysis in Aphis glycines, with paralysis time ranging between 4.5 and 8 min (depending upon parasitoid species and host instar). In a separate experiment, B. communis was capable of inducing transient paralysis in nine aphid species. We addressed two hypotheses potentially explaining the adaptive value of temporary host paralysis in experiments using A. nerii, which is readily accepted but engages in strong defensive behaviour. The first hypothesis is that paralysis increases oviposition success by interfering with host defences and the second is that it aids in the avoidance of self-superparasitism. Paralysed aphids were more likely to be rejected by B. communis than were aphids that had never been stung or that had recovered from paralysis. This result supports the avoidance-of-self-superparasitism hypothesis and is inconsistent with the hypothesis that transient paralysis increases oviposition success of B. communis.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 321-327 |
| Number of pages | 7 |
| Journal | Journal of Insect Physiology |
| Volume | 55 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 1 2009 |
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Keywords
- Aphid parasitoid
- Aphis nerii
- Binodoxys communis
- Idiobiont
- Koinobiont
- Oviposition
- Soybean aphid
- Superparasitism
Cite this
Transient host paralysis as a means of reducing self-superparasitism in koinobiont endoparasitoids. / Desneux, Nicolas; Barta, Ruth J.; Delebecque, Camille J.; Heimpel, George E.
In: Journal of Insect Physiology, Vol. 55, No. 4, 01.04.2009, p. 321-327.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Transient host paralysis as a means of reducing self-superparasitism in koinobiont endoparasitoids
AU - Desneux, Nicolas
AU - Barta, Ruth J.
AU - Delebecque, Camille J.
AU - Heimpel, George E.
PY - 2009/4/1
Y1 - 2009/4/1
N2 - The term 'idiobiont' refers to those parasitoid species that permanently paralyse their hosts during parasitism, causing the cessation of host growth and development. This is in contrast to koinobiont parasitoids, which allow their hosts to continue developing after being parasitized. While no koinobiont species induce permanent paralysis in their hosts, a minority of koinobionts induce a temporary paralysis that does not interfere with overall host growth and development. We characterized transient paralysis induction in two koinobiont aphid parasitoids in the genus Binodoxys (Hymenoptera: Aphidiinae). Both Binodoxys species induced transient paralysis in Aphis glycines, with paralysis time ranging between 4.5 and 8 min (depending upon parasitoid species and host instar). In a separate experiment, B. communis was capable of inducing transient paralysis in nine aphid species. We addressed two hypotheses potentially explaining the adaptive value of temporary host paralysis in experiments using A. nerii, which is readily accepted but engages in strong defensive behaviour. The first hypothesis is that paralysis increases oviposition success by interfering with host defences and the second is that it aids in the avoidance of self-superparasitism. Paralysed aphids were more likely to be rejected by B. communis than were aphids that had never been stung or that had recovered from paralysis. This result supports the avoidance-of-self-superparasitism hypothesis and is inconsistent with the hypothesis that transient paralysis increases oviposition success of B. communis.
AB - The term 'idiobiont' refers to those parasitoid species that permanently paralyse their hosts during parasitism, causing the cessation of host growth and development. This is in contrast to koinobiont parasitoids, which allow their hosts to continue developing after being parasitized. While no koinobiont species induce permanent paralysis in their hosts, a minority of koinobionts induce a temporary paralysis that does not interfere with overall host growth and development. We characterized transient paralysis induction in two koinobiont aphid parasitoids in the genus Binodoxys (Hymenoptera: Aphidiinae). Both Binodoxys species induced transient paralysis in Aphis glycines, with paralysis time ranging between 4.5 and 8 min (depending upon parasitoid species and host instar). In a separate experiment, B. communis was capable of inducing transient paralysis in nine aphid species. We addressed two hypotheses potentially explaining the adaptive value of temporary host paralysis in experiments using A. nerii, which is readily accepted but engages in strong defensive behaviour. The first hypothesis is that paralysis increases oviposition success by interfering with host defences and the second is that it aids in the avoidance of self-superparasitism. Paralysed aphids were more likely to be rejected by B. communis than were aphids that had never been stung or that had recovered from paralysis. This result supports the avoidance-of-self-superparasitism hypothesis and is inconsistent with the hypothesis that transient paralysis increases oviposition success of B. communis.
KW - Aphid parasitoid
KW - Aphis nerii
KW - Binodoxys communis
KW - Idiobiont
KW - Koinobiont
KW - Oviposition
KW - Soybean aphid
KW - Superparasitism
UR - http://www.scopus.com/inward/record.url?scp=61349100688&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=61349100688&partnerID=8YFLogxK
U2 - 10.1016/j.jinsphys.2008.12.009
DO - 10.1016/j.jinsphys.2008.12.009
M3 - Article
VL - 55
SP - 321
EP - 327
JO - Journal of Insect Physiology
JF - Journal of Insect Physiology
SN - 0022-1910
IS - 4
ER -