Premium
Variation in the risk of being wounded: an overlooked factor in studies of invertebrate immune function?
Author(s) -
Plaistow S. J.,
Outreman Y.,
Moret Y.,
Rigaud T.
Publication year - 2003
Publication title -
ecology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.852
H-Index - 265
eISSN - 1461-0248
pISSN - 1461-023X
DOI - 10.1046/j.1461-0248.2003.00455.x
Subject(s) - biology , invertebrate , gammarus pulex , immune system , abundance (ecology) , organism , pulex , ecology , zoology , amphipoda , immunology , crustacean , daphnia , paleontology
In invertebrates, wounding can trigger an immune response, and will often expose organisms to parasites and pathogens. Here we show that in the amphipod Gammarus pulex , wounding abundance is negatively correlated with PhenolOxidase activity (a major component of the invertebrate immune response), and that the occurrence and abundance of wounding is extremely high and varies significantly between five natural populations. In some populations the prevalence and abundance of wounds also varied between sexes. Given that, using and maintaining an efficient immune system is costly, we suggest that the frequency of wounding may be an important selective pressure influencing an organism's optimal investment in immune defences.