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Synergistic Parasite-Pathogen Interactions Mediated by Host Immunity Can Drive the Collapse of Honeybee Colonies
TLDR
An integrated analysis of the population and molecular changes associated with the collapse of honeybees infested by the parasitic mite Varroa destructor shows that this parasite can de-stabilise the within-host dynamics of Deformed wing virus (DWV), transforming a cryptic and vertically transmitted virus into a rapidly replicating killer, which attains lethal levels late in the season. Expand
Evolution of developmental strategies in parasitic hymenoptera.
TLDR
This review synthesizes and interpret results from the phylogenetic, ecological, physiological, and molecular literature to identify factors that have influenced the evolution of parasitoid developmental strategies. Expand
Neonicotinoid clothianidin adversely affects insect immunity and promotes replication of a viral pathogen in honey bees
TLDR
The molecular mechanism through which clothianidin adversely affects the insect immune response and promotes replication of a viral pathogen in honey bees bearing covert infections is described and shed light on a further level of regulation of the immune response in insects and has implications for bee conservation. Expand
Strategies Involved in the Location of Hosts by the ParasitoidAphidius erviHaliday (Hymenoptera: Braconidae: Aphidiinae)
TLDR
This learning ability provides the parasitoid with behavioral plasticity to adapt its responses to suit prevailing foraging opportunities, and attempts are being made to manipulate field populations using host pheromone lures. Expand
Are bee diseases linked to pesticides? - A brief review.
TLDR
While the former are the immediate cause of colony collapses and bee declines, the latter are a key factor contributing to the increasing negative impact of parasitic infections observed in bees in recent decades. Expand
Varroa destructor is an effective vector of Israeli acute paralysis virus in the honeybee, Apis mellifera.
TLDR
It is shown that the mite-virus association could possibly reduce host immunity and therefore promote elevated levels of virus replication and sheds light on the epidemiology of IAPV infection in honeybees. Expand
Bracoviruses Contain a Large Multigene Family Coding for Protein Tyrosine Phosphatases
TLDR
It is shown that a gene family is present in bracoviruses of different braconid wasp subfamilies which likely corresponds to an ancient component of theBracovirus genome that might have been present in the ancestral virus. Expand
A gamma-glutamyl transpeptidase of Aphidius ervi venom induces apoptosis in the ovaries of host aphids.
TLDR
It is suggested that this venom protein may induce apoptosis in the host ovarioles by generating an alteration of the GSH metabolism and a consequent oxidative stress. Expand
Physical and chemical cues influencing the oviposition behaviour of Aphidius ervi
TLDR
This work confirms the existence of an aphid cuticular kairomone, and shows that host exuviae, which also elicited strong and persistent oviposition reactions from A. ervi females, appear to be a good alternative source of ovipositional k airomone(s). Expand
Programmed cell death and stem cell differentiation are responsible for midgut replacement in Heliothis virescens during prepupal instar
TLDR
Midgut replacement in H. virescens is achieved by a balance between this active proliferation process and cell-death mechanisms and is different from similar processes characterized in other insects. Expand
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