Epizootic study in a turbot farm: bacteriology, virology, parasitology and histology

Abstract

Epizootic study in a turbot farm: bacteriology, virology. parasitology and histology.

Helmintofauna of turbot Scophthalmus maximus (Linnaeus, 1758) from the southern Baltic Sea including new data

“…This is confirmed in this study and also in the research conducted by other authors. This tapeworm has been noted in turbot from the Atlantic Ocean, North Sea, English Channel, Mediterranean Sea and Baltic Sea (Markowski 1935, Davey and Peachey 1968, Groot 1971, Rokicki 1975, Sulgostowska et al 1987, Robert et al 1988, Novoa et al 1992, Stankus et al 2011. It should be added that, using molecular genetics methods, Renaud et al (1984) noted that B. scorpii constitutes the complex of two sister-species B. scorpii and Bothriocephalus gregarius Renaud, Gabrion et Pasteur, 1983.…”

“…Markowski 1933, Sulgostowska et al 1987. Moreover, C. semerme has also been noted in turbots in the Gulf of Riga (eastern Baltic Sea) (Kirjušina and Vismanis 2007 (Novoa et al 1992, Dyková and Figueras 1994, Palenzuela et al 2002. Since water pumped to breeding ponds is derived directly from the sea (Novoa et al 1992) and turbot juvenile fish often originate from wild populations, it may be supposed that the mentioned parasites may occur in, or even originate from, wild turbot populations.…”

“…The high infection rate for turbot with tapeworm B. scorpii in the southern Baltic was maintained in the years 1970-90 and prevalence was 100% with intensity at a level of a few tens of parasites in each infected fish (Rokicki 1975, Sulgostowska et al 1987. Also, in the coastal regions of Lithuania, turbot infection reaches very high parameters -97.5%, 25.0 and 2-178 (Stankus et al 2011), while in turbots from maricultures tapeworm B. scorpii is observed more rarely (Novoa et al 1992).…”

“…from Nerophis, Pomatoschistus, Gasterosteus, Pungitius genus (II intermediate host), being the site of plerocercoid development, which is an invasive stage for marine fish, mainly turbot (definitive host) (Markowski 1935, Pojmańska andCielecka 2001). In the juvenile stage, turbot feeds on fine crustacea and molluscs, while in open seas it also feeds on polychaetes (Markowski 1935, Novoa et al 1992, Jackowski 2002, Nissling et al 2007). Nissling et al (2007) report that fish of a length less than 3 cm, feed on copepods from Calanoida and Harpacticoida orders, while individuals of dimensions 3.0-6.7 cm feed mainly on crustacea belonging to the Mysidacea order, and those exceeding 5.5 cm have an increased proportion of isopods in their diet, and also started to feed on juvenile fish represented by gobies and three-spined sticklebacks Gasterosteus aculeatus (Linnaeus, 1758).…”

Genetic parameters for resistance against Vibrio anguillarum in turbot Scophthalmus maximus

“…However, along with the rapid development of turbot aquaculture, and the increase of intensive level in China, there has been an increment in the number of diseases (especially bacterial diseases) that have caused economic loss; therefore, disease has become the bottleneck of development of sustainable aquaculture. Vibrio anguillarum is one of the main causes of economic losses in the Chinese turbot industry (Novoa, Nuñez, Fernández‐Puentes, Figueras, & Toranzo, ). Traditional disease control measures (such as the use of antibiotics) are effective, but cannot completely solve health problems in turbot aquaculture.…”