RT Journal Article
T1 Gastrointestinal helminths in brown trout (Salmo trutta Linnaeus, 1758) captured in Galician rivers (NW Spain)
A1 Couso Pérez, Seila
A1 Ares Mazás, Elvira
A1 Gómez Couso, Hipólito
K1 Indigenous wild trout
K1 Helminth parasite community
K1 Molecular identification
K1 Helminth associations
K1 Update epidemiological data
K1 Galicia (NW Spain)
AB Specimens of Salmo trutta (n = 613) captured by local anglers in different rivers in Galicia (NW Spain) during the 2015 fishing season (15 March–15 August) were examined. In total 1479 adult helminths were recovered from the gastrointestinal tracts of 221 fish. Moreover, the microscopic observation of the sediments obtained, previous diphasic concentration, revealed the presence of helminth eggs in 485 trout specimens. The following species were identified by morphological and molecular analysis: Crepidostomum metoecus (8.97%) (Trematoda); Salmonema ephemeridarum (16.97%), Raphidascaris acus (9.46%) and Pseudocapillaria sp. (2.12%) (Nematoda); and Echinorhynchus truttae (8.48%) (Acanthocephala). The prevalence, mean intensity and mean abundance of each helminth species were determined in relation to size/age of the fish. The helminth infracommunity comprised a maximum of four species and the species richness was S = 5. The biological cycles of most of the helminth species recovered are dependent on benthic macroinvertebrate fauna, which, in turn, is influenced by the water quality. Therefore, any changes that take place in the aquatic ecosystem (due to anthropogenic activities or climate change) may be reflected in the helminth composition
PB Elsevier
YR 2023
FD 2023
LK http://hdl.handle.net/10347/29408
UL http://hdl.handle.net/10347/29408
LA eng
NO Parasitology International 92 (2023) 102676. https://doi.org/10.1016/j.parint.2022.102676
NO SC-P is granted by the Programme for the requalification, international mobility and attraction of talent in the Spanish university system, modality Margarita Salas. The study was funded by the Autonomous Government of Galicia (grants 2017-PG073 and ED431C 2021/26)
DS Minerva
RD 28 abr 2026