Infestation of the black cormorants (Phalacrocorax carbo sinensis L. 1758) from the colony on the Selment Wielki, with the nematode Contracaecum rudolphii Hartwich, 1964 (Nematoda, Anisakidae)

Abstract

Infestation of the black cormorants (Seasonal changes in the intensity and prevalence of infestation of the black cormorants from the colony on Lake Selment Wielki were investigated. In 2006, the cormorants were procured in April, August, and October, while in 2007, they were collected in August and September. The prevalence of the infestation was very high and reached 100%. The highest intensity (mean values of 102.46 and 82.17 nematodes/bird in 2006 and 2007, respectively) was revealed in the cormorants shot in August. Intensity of infestation of those birds procured in autumn 2006 was more than twice that found in spring and one-fourth of that found in summer of that year. Similarly, in autumn of 2007, the birds' stomachs contained less than half of the number of nematodes recorded in summer of that year.

Helminth parasites of the lesser great cormorant Phalacrocorax carbo sinensis from two nesting regions in the Czech Republic

“…Many papers deal with the most important parasite of cormorants, the anisakid C. rudolphii, whose high infections, as found in the present study, were also recorded in other countries (e.g. Nottenkämper et al 1999, Dziekońska-Rynko and Rokicki 2008, Kanarek 2011, Rokicki et al 2011, Szostakowska and Fagerholm 2012. By the way, numerous specimens of C. rudolphii (identified by the senior author of the present paper) were collected by K. Molnár from the stomach of P. carbo sinensis in Hungary on 11 March 2014 (K. Molnár, Veterinary Medical Research Institute, Budapest, Hungary -unpubl.…”

“…Hartwich 1964). In Europe, the life cycle of this nematode (reported as C. spiculigerum) was experimentally studied by Mozgovoy et al (1965Mozgovoy et al ( , 1968 and, subsequently, as C. rudolphii, by Dziekońska-Rynko and Rokicki (2007Rokicki ( , 2008 and Moravec (2009). The available data show that the nematode third-stage larvae develop inside eggs in the external environment (water) and are already infective for young cormorants.…”

Black cormorant Phalacrocorax carbo (L., 1758) as a vector of fungi and parasites occurring in the gastrointestinal tract

“…The parasites occurring very frequently in the gastrointestinal tract of cormorants are nematodes of the genus Contracaecum and Paradilepis scolecina tapeworm (Abollo et al 2001;Amato et al 2006;Dziekońska-Rynko & Rokicki 2008;Dziekońska-Rynko & Dzika 2011;Kanarek 2011). No reports have been found in the available literature on the occurrence of fungi in the gastrointestinal tract of aquatic birds.…”

Parasitic helminths in grey heron (Ardea cinerea) chicks

“…Nematodes of the Contracaecum Raillet et Henry, 1912 genus are found in the gastrointestinal tracts of many fish-eating bird species (Pyrovetsi & Papazahariadou 1995;Nogueserola et al 2002;Papazahariadou et al 2008) although they have been most often isolated in cormorants (Torres et al 2000;Abollo et al 2001;Dziekońska-Rynko & Rokicki 2008;Biedunkiewicz et al 2012). Kuiken et al (1999) demonstrated that the prevalence in one-week-old chicks Brought to you by | New York University Bobst Library Technical Services Authenticated Download Date | 7/25/15 9:13 AM at the Dore Lake cormorant colony (Saskatchewan, Canada) was 50%, in two-week-old chicks it was 71% and it increased to 83% in three-week-old birds.…”