TY - JOUR

T1 - In vitro encystment of Himasthla elongata cercariae (Digenea, Echinostomatidae) in the hemolymph of blue mussels Mytilus edulis as a tool for assessing cercarial infectivity and molluscan susceptibility

AU - Levakin, I.A.

AU - Losev, E.A.

AU - Nikolaev, K.E.

AU - Galaktionov, K.V.

PY - 2013

Y1 - 2013

N2 - Infectivity of Himasthla elongata cercariae to mussels, their second intermediate hosts, and resistance by these hosts to infection were assessed on the basis of the cercariae’s ability to encyst in mussel haemolymph in vitro. A series of experimental in vivo infections of mussels with batches of cercariae, each batch released from a different single infected mollusc and referred to as a clone (due to their shared genotype), demonstrated that the results of the in vitro tests corresponded to the actual indices of infectivity/susceptibility of the parasites and their hosts. Most cercarial clones had high infectivity, with a few clones having very high or, at the other extreme, very low infectivity. A similar pattern was revealed in mussel resistance to cercarial infection. Most of the molluscs tested were moderately susceptible to cercarial infection, but at each extreme a small fraction (less than 10%) displayed very high or very low susceptibility. It was shown that there were no totally compatible or totall

AB - Infectivity of Himasthla elongata cercariae to mussels, their second intermediate hosts, and resistance by these hosts to infection were assessed on the basis of the cercariae’s ability to encyst in mussel haemolymph in vitro. A series of experimental in vivo infections of mussels with batches of cercariae, each batch released from a different single infected mollusc and referred to as a clone (due to their shared genotype), demonstrated that the results of the in vitro tests corresponded to the actual indices of infectivity/susceptibility of the parasites and their hosts. Most cercarial clones had high infectivity, with a few clones having very high or, at the other extreme, very low infectivity. A similar pattern was revealed in mussel resistance to cercarial infection. Most of the molluscs tested were moderately susceptible to cercarial infection, but at each extreme a small fraction (less than 10%) displayed very high or very low susceptibility. It was shown that there were no totally compatible or totall

U2 - 10.1017/S0022149X1200017X

DO - 10.1017/S0022149X1200017X

M3 - Article

VL - 87

SP - 180

EP - 188

JO - Journal of Helminthology

JF - Journal of Helminthology

SN - 0022-149X

IS - 2

ER -