caa a22 4500 388093137 CHVBK 20180307125257.0 cr unu---uuuuu 161130e199912 xx s 000 0 eng 10.4039/Ent131769-6 doi S0008347X00011172 pii (NATIONALLICENCE)cambridge-10.4039/Ent131769-6 SELF-SUPERPARASITISM IN THE SOLITARY PARASITOID MONOCTONUS PAULENSIS (HYMENOPTERA: BRACONIDAE, APHIDIINAE): PROXIMATE MECHANISMS [Elektronische Daten] Monoctonus paulensis (Ashmead) was reared in the laboratory on the four nymphal instars of the pea aphid, Acyrthosiphon pisum (Harris) (Hemiptera: Aphidoidea: Aphididae). Females frequently laid clutches of two eggs during a single ovipositor probe; however, clutches of more than two eggs were rare. The time needed to capture and position an aphid for oviposition increased with aphid instar but was independent of the number of eggs laid. Oviposition time was proportional to egg number, which shows that eggs were laid one at a time rather than clumped together as a package. Intensity of parasitism (i.e., number of eggs per parasitized host) increased with host instar but declined with the number of hosts attacked in quick succession. Our results suggest that clutch size in M. paulensis is not accidental but controlled by the female. Copyright © Entomological Society of Canada 1999 Chau Amanda Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6 Mackauer Manfred Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6 The Canadian Entomologist Cambridge University Press 131/6(1999-12), 769-777 0008-347X 131:6<769 1999 131 TCE https://doi.org/10.4039/Ent131769-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent131769-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chau Amanda Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6 NATIONALLICENCE 700 1- Mackauer Manfred Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 131/6(1999-12), 769-777 0008-347X 131:6<769 1999 131 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge