@incollection{fdi:010093036, title = {{O}verview of interactions between parasitic {D}igenea and their molluscan hosts, with special emphasis on the {L}ymnaeidae}, author = {{H}urtrez-{B}ouss{\`e}s, {S}. and {A}lba, {A}. and {A}lda, {P}. and {C}hapuis, {E}lodie and {F}aug{\`e}re, {D}. and {G}ourbal, {B}. and {P}ointier, {J}.{P}. and {S}ánchez, {J}. and {V}ittecoq, {M}. and {V}ázquez, {A}.{A}.}, editor = {}, language = {{ENG}}, abstract = {{D}igeneans ({P}latyhelminthes, {T}rematoda) are considered as a very ancient and as the most diversified group of internal metazoan parasites of animals. {T}hey can have important detrimental effects on human and animal health. {T}hey also affect populations dynamics of their hosts, are able to shape the structure of communities, and can act as determinants of ecosystems structure and functioning. {W}hereas life-cycles are diversified, the fundamental life-cycle of digeneans is characterized by a mollusc as the first intermediate host, where an important asexual multiplication occurs and by a vertebrate as definitive host. {T}he interactions between digeneans and molluscs are complex; they start with the infection of the mollusc by the miracidial larval stage, which implies molecular mechanisms of attraction, recognition, and attachment. {O}nce the penetration successful, an intimate association starts between the mollusc and the digenean, where the mollusc displays an intense immune response and, in turn, the digenean counter-attacks by different mechanisms. {A}ll these complex interactions can lead to high reciprocal specializations which can lead to host-parasite specificity. {A}fter its installation, the miracidium converts into a sporocyst which develops and starts an intense asexual multiplication, highly detrimental for the molluscan fitness. {A}t the end of several cycles of asexual reproduction, the last larval stages, the cercariae, are emitted and will serve to infect the following host. {T}aking into account the complexity of mollusc-digenean interactions, their sensitivity to environmental perturbations and their importance in ecological and epidemiological risks, such interactions have to be particularly scrutinized. {I}n this chapter, we review such host-parasite interactions with emphasis on the {L}ymnaeidae.}, keywords = {}, booktitle = {{T}he {L}ymnaeidae : a handbook on their natural history and parasitological significance}, numero = {7}, pages = {331--357}, address = {{C}ham}, publisher = {{S}pringer}, series = {{Z}oological {M}onographs}, year = {2023}, DOI = {10.1007/978-3-031-30292-3_12}, ISBN = {978-3-031-30291-6}, URL = {https://www.documentation.ird.fr/hor/fdi:010093036}, }