Low diversity of helminth parasites in Sardina pilchardus and Engraulis encrasicolus (Clupeidae) from the Bay of Biscay

Abstract : Parasitological data are increasingly used to provide information on host populations, trophic interactions and free-living biodiversity. Here, parasitic helminths have been researched in Sardina pilchardus and Engraulis encrasicolus from the Bay of Biscay (North-East Atlantic). In addition, a review of helminths infecting E. encrasicolus has been provided. Surprisingly, our field study reveals the occurrence of only three species of Ascaridoidea (Anisakis simplex sensu stricto, Anisakis pegreffi and Hysterothylacium aduncum) in both fish species despite the high diversity of helminth parasites (mostly heteroxenous trophically-transmitted) recorded throughout their distribution range, i.e. 39 and 15 taxa, respectively, for S. pilchardus and E. encrasicolus: among them, 12 shared taxa. This low diversity of helminth parasites in the Bay of Biscay may be indicative of a low free-living biodiversity. Moreover, similarities in the helminth parasites of S. pilchardus and E. encrasicolus, recorded both in our field study and in their entire geographical distribution, suggest ecological and feeding similarities between these two planktivorous fish. However, the higher prevalence and mean intensity of Ascaridoidea in E. encrasicolus (vs. S. pilchardus) in the Bay of Biscay also highlighted differences, which were considered the result of its higher trophic plasticity.
Document type :
Journal articles
Complete list of metadatas

Cited literature [33 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01377895
Contributor : Paco Bustamante <>
Submitted on : Friday, October 7, 2016 - 6:56:32 PM
Last modification on : Tuesday, May 14, 2019 - 10:39:39 AM
Long-term archiving on : Friday, February 3, 2017 - 11:49:12 PM

File

Dessier et al 2015 MFR.pdf
Files produced by the author(s)

Identifiers

Citation

Aurélie Dessier, Dupuy Christine, Thomas Trancart, Alexandre Audras, Paco Bustamante, et al.. Low diversity of helminth parasites in Sardina pilchardus and Engraulis encrasicolus (Clupeidae) from the Bay of Biscay. Marine and Freshwater Research, CSIRO Publishing, 2016, 67 (10), pp.1583-1588. ⟨10.1071/MF15147⟩. ⟨hal-01377895⟩

Share

Metrics

Record views

460

Files downloads

242