Host stage preference ofDolichogenidea tasmanica(Cameron, 1912) (Hymenoptera: Braconidae), a parasitoid ofEpiphyas postvittana(Walker, 1863) (Lepidoptera: Tortricidae)

2014 ◽  
Vol 54 (3) ◽  
pp. 325-331 ◽  
Author(s):  
Maryam Yazdani ◽  
Yi Feng ◽  
Richard Glatz ◽  
Michael A Keller
Keyword(s):  
Host Stage

FECUNDITY, LONGEVITY, AND SEX RATIO OF APHIDIUS NIGRIPES (HYMENOPTERA: APHIDIIDAE) PARASITIZING DIFFERENT STAGES OF ITS HOST, MACROSIPHUM EUPHORBIAE (HOMOPTERA: APHIDIDAE)

1981 ◽  
Vol 113 (3) ◽  
pp. 193-198 ◽  
Author(s):  
Conrad Cloutier ◽  
Jeremy N. McNeil ◽  
Jacques Regnière
Keyword(s):  
Sex Ratio ◽  
Direct Relationship ◽  
Developmental Stages ◽  
Macrosiphum Euphorbiae ◽  
Separate Experiment ◽  
Female Parasite ◽  
Potato Aphid ◽  
Aphidius Nigripes ◽  
Host Stage ◽  
Female Longevity

AbstractThe longevity and age specific fecundity, as well as the sex ratio of the progeny, were obtained for Aphidius nigripes Ashmead females given access to the five developmental stages of the potato aphid, Macrosiphum euphorbiae (Thomas). Neither female longevity nor fecundity, as measured by the total number of aphids parasitized, were significantly different for the various host stages. The percentage of females in the progeny decreased as the female parasite aged, and the overall sex ratio of progeny was significantly affected by the host stage attacked although no direct relationship with host size was evident. However in a separate experiment where parasitism was controlled (females not permitted to attack more than 10 hosts per day), the host stage (size) significantly affected the sex ratio of progeny, with more females emerging from larger than smaller hosts.These data indicate that all developmental stages of M. euphorbiae, when presented separately, are suitable to A. nigripes.

Host Age Effects on Ovipositional and Developmental Biology of Baryscapus chrysopae (Hymenoptera: Eulophidae), a Parasitoid of Chrysopid Larvae

1995 ◽  
Vol 30 (2) ◽  
pp. 287-293
Author(s):  
John R. Ruberson ◽  
Timothy J. Kring
Keyword(s):  
Developmental Biology ◽  
Sex Ratio ◽  
Developmental Time ◽  
Age Effects ◽  
Host Age ◽  
Larval Stages ◽  
Chrysoperla Rufilabris ◽  
Host Stage ◽  
Gregarious Parasitoid

The parasitoid, Baryscapus (=Tetrastichus) chrysopae (Crawford), is a widely-distributed gregarious parasitoid of chrysopid larvae. The ovipositional and developmental biology of this parasitoid in relation to the stage of its host, Chrysoperla rufilabris (Burmeister), was examined. Female B. chrysopae attacked all larval stages of the host tested (instars 1 to 3), and paralyzed all hosts soon after mounting and stinging. During the host's paralysis, females oviposited in and fed on hosts. The time females spent on hosts was directly related to host stage. All hosts recovered from paralysis. Parasitoid developmental time was inversely related to host stage and ranged from 27.5 d in 1-d-old hosts to 20.5 d in 10-d-old hosts. Most development of parasitoid larvae appears to occur after the host has spun its pupal cocoon. The number of parasitoids produced per host was unrelated to host stage, ranging from 10.5 (in 1-d-old hosts) to 14.2 (in 7-d-old hosts) parasitoids per host. The sex ratio was skewed toward females (81.6% pooled across host stages) and was unrelated to host stage. The developmental biology of B. chrysopae appears to be well synchronized with that of its host.

Host stage preference for depositon of male eggs byCoccophagus cowperi [Hym.: Aphelinaidae]

Entomophaga ◽  
1981 ◽  
Vol 26 (3) ◽  
pp. 313-318 ◽  
Author(s):  
B. M. Wilk ◽  
C. Y. Kitayama
Keyword(s):  
Host Stage

Host stage preference, efficacy and fecundity of parasitoids attacking Drosophila suzukii in newly invaded areas

2015 ◽  
Vol 84 ◽  
pp. 28-35 ◽  
Author(s):  
M. Valerio Rossi Stacconi ◽  
Matt Buffington ◽  
Kent M. Daane ◽  
Daniel T. Dalton ◽  
Alberto Grassi ◽  
...  
Keyword(s):  
Drosophila Suzukii ◽  
Host Stage
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