scholarly journals The Effects ofBean Leafroll Viruson Life History Traits and Host Selection Behavior of Specialized Pea Aphid (Acyrthosiphon pisum, Hemiptera: Aphididae) Genotypes

2017 ◽  
pp. nvw150 ◽  
Author(s):  
T. S. Davis ◽  
Y. Wu ◽  
S. D. Eigenbrode
Keyword(s):  
Life History ◽  
Host Selection ◽  
Life History Traits ◽  
Acyrthosiphon Pisum ◽  
Pea Aphid ◽  
Host Selection Behavior ◽  
Selection Behavior

scholarly journals The Combined Effects of Bacterial Symbionts and Aging on Life History Traits in the Pea Aphid, Acyrthosiphon pisum

2013 ◽  
Vol 80 (2) ◽  
pp. 470-477 ◽  
Author(s):  
Alice M. Laughton ◽  
Maretta H. Fan ◽  
Nicole M. Gerardo
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Acyrthosiphon Pisum ◽  
Immune Cell ◽  
Host Population ◽  
Pea Aphid ◽  
Combined Effects ◽  
Content Type ◽  
Secondary Symbiont ◽  
Cell Counts

ABSTRACTWhile many endosymbionts have beneficial effects on hosts under specific ecological conditions, there can also be associated costs. In order to maximize their own fitness, hosts must facilitate symbiont persistence while preventing symbiont exploitation of resources, which may require tight regulation of symbiont populations. As a host ages, the ability to invest in such mechanisms may lessen or be traded off with demands of other life history traits, such as survival and reproduction. Using the pea aphid,Acyrthosiphon pisum, we measured survival, lifetime fecundity, and immune cell counts (hemocytes, a measure of immune capacity) in the presence of facultative secondary symbionts. Additionally, we quantified the densities of the obligate primary bacterial symbiont,Buchnera aphidicola, and secondary symbionts across the host's lifetime. We found life history costs to harboring some secondary symbiont species. Secondary symbiont populations were found to increase with host age, whileBuchnerapopulations exhibited a more complicated pattern. Immune cell counts peaked at the midreproductive stage before declining in the oldest aphids. The combined effects of immunosenescence and symbiont population growth may have important consequences for symbiont transmission and maintenance within a host population.

Role of host-produced stimuli and learning in host selection behavior ofCotesia (=Apanteles) marginiventris (Cresson)

1985 ◽  
Vol 11 (4) ◽  
pp. 453-463 ◽  
Author(s):  
J. Dmoch ◽  
W. J. Lewis ◽  
P. B. Martin ◽  
Donald A. Nordlund
Keyword(s):  
Host Selection ◽  
Host Selection Behavior ◽  
Selection Behavior

Host selection behavior of the host-feeding parasitoid Necremnus tutae on Tuta absoluta

2021 ◽  
Author(s):  
Yibo Zhang ◽  
Xiaocao Tian ◽  
Hao Wang ◽  
Cristina Casteňé ◽  
Judit Arnó ◽  
...  
Keyword(s):  
Host Selection ◽  
Tuta Absoluta ◽  
Host Feeding ◽  
Host Selection Behavior ◽  
Selection Behavior
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