J 2017

Occurrence and effect of trematode metacercariae in two endangered killifishes from Greece

KALOGIANNI, Eleni, Nikol KMENTOVÁ, Eileen HARRIS, Brian ZIMMERMAN, Sofia GIAKOUMI et. al.

Basic information

Original name

Occurrence and effect of trematode metacercariae in two endangered killifishes from Greece

Authors

KALOGIANNI, Eleni (300 Greece), Nikol KMENTOVÁ (203 Czech Republic, guarantor, belonging to the institution), Eileen HARRIS (826 United Kingdom of Great Britain and Northern Ireland), Brian ZIMMERMAN (826 United Kingdom of Great Britain and Northern Ireland), Sofia GIAKOUMI (300 Greece), Yorgos CHATZINIKOLAOU (300 Greece) and Maarten Pieterjan VANHOVE (56 Belgium, belonging to the institution)

Edition

Parasitology Research, NEW YORK, Springer, 2017, 0932-0113

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 2.558

RIV identification code

RIV/00216224:14310/17:00095404

Organization unit

Faculty of Science

UT WoS

000413979600015

Keywords in English

Digenea; Parasite prevalence; Host body condition; Planorbidae; Platyhelminthes; Valenciidae

Tags

Změněno: 9/4/2018 22:31, Ing. Nicole Zrilić

Abstract

V originále

We report digeneans (Diplostomidae, Crassiphialinae) in the endangered freshwater fishes Valencia letourneuxi and Valencia robertae, endemics of Western Greece. Digenean metacercariae occurred in two forms in the abdominal cavity, excysted and encysted, the latter attached to the gonads, liver and alimentary tract. Parasites were, using morphological and molecular techniques, identified as two representatives of Crassiphialinae, specifically part of the Posthodiplostomum-Ornithodiplostomum clade. The spatial, seasonal, and age class variation in parasite prevalence was examined. Autumn parasite prevalence varied between the six populations sampled (18.2 to 100%). Seasonal prevalence at the two sites sampled quadannually peaked in autumn and reached its lowest value in spring; prevalence increased with size to 100% in young adult fish. We did not find a correlation between prevalence and host sex. Overall parasites' weight averaged 0.64% of the host's, while parasite weight increased with host weight. A comparison of relative condition and hepatosomatic and gonadosomatic indices of infected and metacercariae-free specimens showed that infection did not have a significant effect on host body condition and reproduction. Regarding the parasite's life cycle, planorbid gastropods are proposed as potential first intermediate hosts in view of the host's diet and occurrence data of molluscs in the ecosystem. This is the first record of a diplostomid digenean in valenciid fishes and of representatives of the Posthodiplostomum-Ornithodiplostomum clade in a native Greek freshwater fish. Our findings are discussed in conjunction to fish conservation interventions, since parasites may contribute to the decline of endangered species.

Links

GBP505/12/G112, research and development project
Name: ECIP - Evropské centrum ichtyoparazitologie
Investor: Czech Science Foundation