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Water boatman survival and fecundity are related to ectoparasitism and salinity stress

Salinity is increasing in aquatic ecosystems in the Mediterranean region due to global change, and this is likely to have an important impact on host-parasite interactions. Here the relationships between infection by ectoparasitic water mites and salinity variation, on survival and fecundity of water boatmen Corixidae from Doñana National Park was studied in the laboratory. Larvae of Sigara lateralis parasitised by larval mites (Hydrachna skorikowi) had lower survivorship, and failed to moult to the adult stage. In adult corixids (S. lateralis and Corixa affinis) fitness was reduced at high salinities and in individuals infected by H. skorikowi, both in terms of survival and fecundity. Evidence was also found for parasitism-salinity interactions. Results suggest that ongoing increases in salinity in Mediterranean ponds due to climate change and water abstraction for agriculture or urban use have a strong impact on water bugs, and that their interactions with ectoparasites may modify salinity effects. informacion[at]ebd.csic.es: Céspedes et al (2019) Water boatman survival and fecundity are related to ectoparasitism and salinity stress. PLos ONE. Doi 10.1371/journal.pone.0209828


https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0209828
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Content with tag fecundity .

Water boatman survival and fecundity are related to ectoparasitism and salinity stress

Salinity is increasing in aquatic ecosystems in the Mediterranean region due to global change, and this is likely to have an important impact on host-parasite interactions. Here the relationships...

The life cycle of an alien boatman

Trichocorixa verticalis (Corixidae) is native to North America but is well established as an alien in the Western Mediterranean region, where it is invasive in permanent coastal wetlands with high...

How to plan reintroductions of long-lived birds

Reintroductions have been increasingly used for species restoration and it seems that this conservation tool is going to be more used in the future. Nevertheless, there is not a clear consensus...

Joint actions to reverse the fate of the Egyptian vulture

Large body-sized avian scavengers, including the Egyptian vulture, are globally threatened due to human-related mortality so guidelines quantifying the efficacy of different management approaches...