Molecular and morphological identification of Cardicola (Trematoda: Aporocotylidae) eggs in hatchery-reared and migratory Atlantic bluefin tuna (Thunnus thynnus L.)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F16%3A00453655" target="_blank" >RIV/60077344:_____/16:00453655 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.aquaculture.2015.06.043" target="_blank" >http://dx.doi.org/10.1016/j.aquaculture.2015.06.043</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.aquaculture.2015.06.043" target="_blank" >10.1016/j.aquaculture.2015.06.043</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Molecular and morphological identification of Cardicola (Trematoda: Aporocotylidae) eggs in hatchery-reared and migratory Atlantic bluefin tuna (Thunnus thynnus L.)

Popis výsledku v původním jazyce

A microscopic and a molecular approach was used to investigate blood fluke infection in the very first specimens of Atlantic bluefin tuna (Thunnus thynnus, Scombridae) that were born in captivity and that were never moved fromtheir specific cage culture sites in theMediterranean. Datawere compared with infection inwild, migratory bluefin tuna which were captured and fattened along the Spanish Mediterranean coast. Wild and cultured populations sampled in the present study harbored the same Cardicola spp. richness and showed statistically insignificant differences in overall parasite prevalence. Three morphotypes, crescent-shaped, fusiform and oval eggs, were observed in both non-migrant and migrant tuna. According to partial ITS2 and 28S rDNA sequences they belong to Cardicola opisthorchis, Cardicola forsteri, and to Cardicola sp., a recently described species, phylogenetically closely related to Cardicola orientalis. All three species were simultaneously present in some specimens. No significant difference in overall parasite prevalencewas observed, though the prevalence of eggs of individual species, i.e. C. opisthorchis and C. forsteri, was significantly higher in fattened bluefin tuna. Our results strongly support a Mediterranean origin of the three Cardicola species encountered in cultured specimens and suggest that the intermediate hosts of these Cardicola species occur along the Mediterranean coast. Thus, infection with these parasites is not exclusively a result of infections happening along the migratory routes of wild bluefin tuna, in the Atlantic Ocean, as previously suggested. Once transferred to the sea for fattening, Atlantic bluefin tuna are at risk of infection with up to three different species of the genus Cardicola in along theMediterranean coast in southeast Spain. On the contrary, C. orientalis infections might be associated to long-distance migration and an overlapping Thunnus maccoyii and Thunnus orientalis distribution.

Název v anglickém jazyce

Molecular and morphological identification of Cardicola (Trematoda: Aporocotylidae) eggs in hatchery-reared and migratory Atlantic bluefin tuna (Thunnus thynnus L.)

Popis výsledku anglicky

A microscopic and a molecular approach was used to investigate blood fluke infection in the very first specimens of Atlantic bluefin tuna (Thunnus thynnus, Scombridae) that were born in captivity and that were never moved fromtheir specific cage culture sites in theMediterranean. Datawere compared with infection inwild, migratory bluefin tuna which were captured and fattened along the Spanish Mediterranean coast. Wild and cultured populations sampled in the present study harbored the same Cardicola spp. richness and showed statistically insignificant differences in overall parasite prevalence. Three morphotypes, crescent-shaped, fusiform and oval eggs, were observed in both non-migrant and migrant tuna. According to partial ITS2 and 28S rDNA sequences they belong to Cardicola opisthorchis, Cardicola forsteri, and to Cardicola sp., a recently described species, phylogenetically closely related to Cardicola orientalis. All three species were simultaneously present in some specimens. No significant difference in overall parasite prevalencewas observed, though the prevalence of eggs of individual species, i.e. C. opisthorchis and C. forsteri, was significantly higher in fattened bluefin tuna. Our results strongly support a Mediterranean origin of the three Cardicola species encountered in cultured specimens and suggest that the intermediate hosts of these Cardicola species occur along the Mediterranean coast. Thus, infection with these parasites is not exclusively a result of infections happening along the migratory routes of wild bluefin tuna, in the Atlantic Ocean, as previously suggested. Once transferred to the sea for fattening, Atlantic bluefin tuna are at risk of infection with up to three different species of the genus Cardicola in along theMediterranean coast in southeast Spain. On the contrary, C. orientalis infections might be associated to long-distance migration and an overlapping Thunnus maccoyii and Thunnus orientalis distribution.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EG - Zoologie

OECD FORD obor

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Projekt

<a href="/cs/project/GBP505%2F12%2FG112" target="_blank" >GBP505/12/G112: ECIP - Evropské centrum ichtyoparazitologie</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Aquaculture

ISSN

0044-8486

e-ISSN

—

Svazek periodika

450

Číslo periodika v rámci svazku

JAN 1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

58-66

Kód UT WoS článku

000364854000009

EID výsledku v databázi Scopus

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