[OANNES Foro] =?gb2312?B?UGFyYXNpdGWpXG1lZGlhdGVkIGFsdGVyYXRpb24gb2YgdGhlIGVuZw==?= =?gb2312?B?aW5lZXJpbmcgYmVoYXZpb3VyIG9mIG11ZCBzaHJpbXAgaGFzIGJybw==?= =?gb2312?B?YWQgZWNvbG9naWNhbCBpbXBhY3RzIG9uIG1hcmluZSBjb2FzdGFsIA==?= =?gb2312?B?c3lzdGVtcyBmdW5jdGlvbmluZw==?=

[Mario Cabrejos]

Journal of Animal Ecology

First published: 09 April 2020

 <https://doi.org/10.1111/1365-2656.13236>
https://doi.org/10.1111/1365-2656.13236

Parasitism in ecosystem engineer species: A key factor controlling marine
ecosystem functioning

 
<https://besjournals.onlinelibrary.wiley.com/action/doSearch?ContribAuthorSt
ored=Pascal%2C+Ludovic> Ludovic Pascal
<https://besjournals.onlinelibrary.wiley.com/action/doSearch?ContribAuthorSt
ored=Gr%C3%A9mare%2C+Antoine> Antoine Gr¨¦mare
<https://besjournals.onlinelibrary.wiley.com/action/doSearch?ContribAuthorSt
ored=Montaudouin%2C+Xavier> Xavier de Montaudouin
<https://besjournals.onlinelibrary.wiley.com/action/doSearch?ContribAuthorSt
ored=Deflandre%2C+Bruno> Bruno Deflandre
<https://besjournals.onlinelibrary.wiley.com/action/doSearch?ContribAuthorSt
ored=Romero-Ramirez%2C+Alicia> Alicia Romero©\Ramirez  <https://besjournals.
onlinelibrary.wiley.com/action/doSearch?ContribAuthorStored=Maire%2C+Olivier
> Olivier Maire 

Abstract

1.	Although parasites represent a substantial part of marine
communities¡¯ biomass and diversity, their influence on ecosystem
functioning, especially via the modification of host behaviour, remains
largely unknown. Here, we explored the effects of the bopyrid ectoparasite
Gyge branchialis on the engineering activities of the thalassinid crustacean
Upogebia pusilla and the cascading effects on intertidal ecosystem processes
(e.g. sediment bioturbation) and functions (e.g. nutrient regeneration). 
2.	Laboratory experiments revealed that the overall activity level of
parasitized mud shrimp is reduced by a factor 3.3 due to a decrease in time
allocated to burrowing and ventilating activities (by factors 1.9 and 2.9,
respectively).
3.	Decrease in activity level led to strong reductions of bioturbation
rates and biogeochemical fluxes at the sediment¨Cwater interface.
4.	Given the world©\wide distribution of mud shrimp and their key role
in biogeochemical processes, parasite©\mediated alteration of their
engineering behaviour has undoubtedly broad ecological impacts on marine
coastal systems functioning.
5.	Our results illustrate further the need to consider host¨Cparasite
interactions (including trait©\mediated indirect effects) when assessing the
contribution of species to ecosystem properties, functions and services.

 



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