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Piscicola geometra and Argulus foliaceus are two haematophagous parasites collected through sporadic seasonal fishing carried out in the spring of 2009 and 2012, in the study area represented by ten reservoirs from the Oltenia Plain. These parasites are the most common in these lakes and affect a wide range of host fish, both in natural and artificial pools. In the spring of 2009, we sampled 42 specimens of fish and the etiological agent was the crustacean Argulus foliaceus, which was reported only for two fish species: Perca fluviatilis and Cyprinus carpio. In 2012, 47 fish specimens were captured belonging to the species – Scardinius erythrophthalmus, Lepomis gibbosus, Abramis brama, Carassius gibelio, Perca fluviatilis. The Piscicola geometra parasite was identified only in Carassius gibelio. It has been found out that an important common factor in causing these parasites is water temperature; consequently, the invasion decreases when water temperature increases. Although these parasitosis evolved subclinically without mortality, prevention and treatment measures were proposed to prevent their spreading. Thus, wood panels were installed into the water so that the Argulus foliaceus parasite could lay its eggs and, as measures of combat, the literature recommends the treatment with Trichlorfon at a dose of 1g/6m³ of water. The destruction of the macrophyte vegetation and prevention of the penetration of fish species from one basin to another, given that they communicate via spillways, are some prophylactic measures to prevent fish infestation. [ABSTRACT FROM AUTHOR]

Specimens of Piscicola pojmanskae were identified in the macrozoobenthos community in Zostera meadows in Puck Bay. The presented paper is the first report on the observation of this species in the Gulf of Gdańsk (the southern Baltic Sea). Leeches are a rare component of the benthic fauna in this brackish water area. [ABSTRACT FROM AUTHOR]

This study investigated the presence of parasitic annelids on Carassius gibelio in Lake Uluabat, Turkey. Data were obtained from on-site surveys carried out between March 2006 and February 2007. Only one parasite species, Piscicola geometra(Linnaeus, 1761), was identified on only one samples of Carassius gibelio's operculum. Although P. geometra was reported from various lakes in Turkey (such as Sapanca, Keban Dam Lake, Terkos, Çavuşçu and Uluabat), up to now there has been no report on Carassius gibelio from lake Uluabat. [ABSTRACT FROM AUTHOR]