Component population study of Acanthocephalus tumescens (Acanthocephala) in fishes from Lake Moreno, Argentina

Title:

Component population study of Acanthocephalus tumescens (Acanthocephala) in fishes from Lake Moreno, Argentina

Creator:

Rauque, Carlos A., Viozzi, Gustavo P., and Semenas, Liliana G.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:28f1f541-5d0b-4831-a873-c211dc78f402
uuid:28f1f541-5d0b-4831-a873-c211dc78f402
doi:10.14411/fp.2003.013

Subject:

Acanthocephalus tumescens, Patagonian freshwater fishes, host status, component population, and suprapopulation

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Seasonal samples of all fish species from Lake Moreno were taken in order to determine the presence of paratenia, to evaluate the status of the hosts and to characterise the transmission of Acanthocephalus tumescens (von Linstow, 1896) at the component population level. Prevalence, mean abundance, mean intensity, numbers of gravid females, relative abundance of the different fish species, relative output of eggs and relative flow rates for each host species were computed. Acanthocephalus tumescens showed low host specificity, successfully parasitizing six out of eight fish species present in the lake. No paratenic infection was registered. If prevalence, mean abundance, and number of gravid females are considered, host species can be placed in a continuum from the most to least suitable as follows: Galaxias platei Steindachner, Diplomystes viedmensis (Mac Donagh), Oncorhynchus mykiss (Walbaum), Salvelinus fontinalis (Mitchill), Percichthys trucha (Cuvier et Valenciennes) and Galaxias maculatus (Jenyns). However, when parasite flow rates and egg output were calculated, including relative abundance of each fish species, the continuum was rearranged as follows: P. trucha, O. mykiss, G. platei / G. maculatus, S. fontinalis and D. viedmensis. The first four species would be the main contributors to the population of A. tumescens in this lake, P. trucha being the major one. Different regulatory and non-regulatory mechanisms are suggested.

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

72-78

Source:

Folia parasitologica | 2003 Volume:50 | Number:1

Harvested from:

CDK

Metadata only:

false