The occurrence of Cyathostoma (Cyathostoma) microspiculum (Skrjabin, ) (Nematoda: Syngamidae) in the great cormorant [Phalacrocorax carbo (L., 1758)] in north-eastern Poland

2009 ◽  
Vol 83 (4) ◽  
pp. 391-398 ◽  
Author(s):  
G. Kanarek
Keyword(s):  
Great Cormorant ◽  
Vistula Lagoon ◽  
Lake District ◽  
Phalacrocorax Carbo ◽  
Breeding Colony ◽  
Mean Intensity ◽  
North Eastern ◽  
Age Dependent ◽  
Infection Parameters ◽  
The Vistula Lagoon

AbstractThe nematode Cyathostoma (Cyathostoma) microspiculum (Skrjabin, 1915) was found in 37 out of the 491 great cormorant [Phalacrocorax carbo (L.)] individuals from north-eastern Poland (the Vistula Spit, the Vistula Lagoon and the Masurian Lake District) that were examined. The nematode occurred at 7.5% prevalence, 3.6 mean intensity (1–16 intensity range) and 0.27 mean abundance. This is the first Polish record of C. microspiculum and the first properly documented record of the nematode in Europe. Significant age-dependent differences in prevalence and mean intensity were found; the heaviest infection (13.7%; 4) was found in immature birds, followed by that found in chicks (8.1%; 3.7) and mature individuals (4.4%; 3). No significant habitat-dependent differences in the infection parameters were found but, for chicks, the nematode was present exclusively in those found in the breeding colony located on the Vistula Spit. It may be related to their life cycle, probably associated with a marine environment. Morphology and biometry of the C. microspiculum individuals examined are described in detail. The results are compared with data in the literature. Syngamus hexadontus Chin, 1950 is recognized as an older synonym of C. microspiculum.

scholarly journals Syncuaria squamata (Linstow, 1883) (Nematoda: Acuariidae) in the Great Cormorant [Phalacrocorax carbo sinensins (Blumenbach, 1798)] in northern Poland

2006 ◽  
Vol 43 (1) ◽  
pp. 33-36 ◽  
Author(s):  
G. Kanarek ◽  
L. Rolbiecki
Keyword(s):  
Parasite Fauna ◽  
Great Cormorant ◽  
Vistula Lagoon ◽  
Lake District ◽  
Phalacrocorax Carbo ◽  
Northern Poland ◽  
Great Cormorants ◽  
Gravid Females ◽  
A New Species ◽  
The Vistula Lagoon

AbstractOf the 105 great cormorants (Phalacrocorax carbo sinensins) from northern Poland (the Vistula Lagoon and Masurian Lake District), examined in 2000–2001, 67 proved hosts of the nematode Syncuaria squamata (Linstow, 1883). The prevalence, mean intensity, and intensity range amounted to 63.8 %, 36.2 specimens, and 1–120 specimens, respectively. The infection was heavier in the immature birds (84.6 %, 40.9 inds, and 1–120 inds) than in the adults (3.7 %, 1 ind.). The nematodes were dominated by gravid females (n=1846), followed by males (n=157), immature females (n=79), and L4 larvae (n=2). Measurements of the parasite are provided. S. squamata is a new species for the parasite fauna of Poland.

scholarly journals Biomagnification of mercury in trophic relation of Great Cormorant (Phalacrocorax carbo) and fish in the Vistula Lagoon, Poland

2010 ◽  
Vol 176 (1-4) ◽  
pp. 439-449 ◽  
Author(s):  
Małgorzata Misztal-Szkudlińska ◽  
Piotr Szefer ◽  
Piotr Konieczka ◽  
Jacek Namieśnik
Keyword(s):  
Great Cormorant ◽  
Vistula Lagoon ◽  
Phalacrocorax Carbo ◽  
Trophic Relation ◽  
The Vistula Lagoon

scholarly journals Great cormorant (Phalacrocorax carbo) predation on pikeperch (Sander lucioperca L.) in shallow eutrophic lakes in Poland

2017 ◽  
Vol 25 (2) ◽  
pp. 123-130 ◽  
Author(s):  
Piotr Traczuk ◽  
Andrzej Kapusta
Keyword(s):  
Length Distribution ◽  
Bird Species ◽  
Fish Populations ◽  
Great Cormorant ◽  
Phalacrocorax Carbo ◽  
Sander Lucioperca ◽  
Eutrophic Lakes ◽  
Breeding Colony ◽  
Great Cormorants

AbstractIncreases in the population abundance of the piscivorous great cormorant (Phalacrocorax carbo) has led to conflicts with fisheries. Cormorants are blamed for decreased fish catches in many lakes in Poland. The aim of this paper is to describe to role of pikeperch (Sander lucioperca) in the diet of cormorants nesting in a colony on the island in Lake Warnołty. Since the breeding colony is located in the vicinity of Lake OEniardwy, the largest lake in Poland, the cormorants use the resources in this lake. In 2009-2016, 18,432 regurgitated fish were collected, of which 593 were pikeperch. The share of pikeperch among fish collected in 2009-2012 did not exceed 2%, but from 2013 this increased substantially to maximum of 38.2% in 2015. The smallest pikeperch had a standard length of 8.4 cm, and the largest 42.5 cm. Pikeperch mean length differed by year, and the length distribution was close to normal. The sizes of the regurgitated pikeperch indicate that cormorants prey almost exclusively on juvenile specimens. The results of the present study indicate that cormorant predation has a significant impact on pikeperch populations in lakes in the vicinity of the colony, and the great cormorants are possibly a significant factor in the effectiveness of pikeperch management. When planning for the management of fish populations in lakes subjected to cormorant predation pressure, it should be borne in mind that predation by this piscivorous bird species impacts the abundance and size-age structure of fish populations.

scholarly journals Hydrochemical variability of the ecosystem of the Gulf of Elbląg (north-eastern Poland)

Baltica ◽  
2016 ◽  
Vol 29 (2) ◽  
pp. 121-132 ◽  
Author(s):  
Roman Cieśliński
Keyword(s):  
Chemical Properties ◽  
Vistula Lagoon ◽  
Measurement Point ◽  
Physico Chemical ◽  
North Eastern ◽  
Vistula Delta ◽  
Hydrometeorological Conditions ◽  
The Vistula Lagoon

The Vistula Lagoon – one of the main recipients of the central and eastern parts of the Vistula delta – is not homogeneous in terms of its hydrodynamics and hydrochemistry. In the southern part a separate hydrographic object – the Gulf of Elbląg – can be delimited. This delimitation is due to different morphometric and hydrometeorological conditions that prevail in this part of the Vistula Lagoon. In order to determine the nature of the waters, measurements of the selected physico-chemical properties, including chlorides, as well as control hydrological measurements were performed in the years 1997–2007. The study area included the water of the Gulf of Elbląg, the estuary stretch of the Elbląg River, the watercourses flowing from the Elbląg Plateau and the polder areas surrounding the Gulf of Elbląg. One measurement point was located on the Vistula Lagoon. The chloride values in the Gulf of Elbląg ranged from 20 to 2015 mg·dm-3. The results may indicate that the Gulf of Elbląg is a reservoir under the hydrodynamic and hydrochemical influence of both the Vistula Lagoon and the watercourses in its mouth, as well as the Vistula delta and the Elbląg Plateau. They dictate the seasonal nature of the waters of the Gulf of Elbląg.

scholarly journals The tapeworm Paradilepis scolecina (Rudolphi, 1819) (Cestoda: Cyclophyllidea) invasion in Great Cormorant [Phalacrocorax carbo sinensis (Blumenbach, 1798)] from the breeding colony in Lake Selment Wielki (northern Poland)

2011 ◽  
Vol 48 (1) ◽  
pp. 23-28 ◽  
Author(s):  
J. Dziekońska-Rynko ◽  
E. Dzika
Keyword(s):  
Great Cormorant ◽  
Phalacrocorax Carbo ◽  
Breeding Colony ◽  
Northern Poland ◽  
Phalacrocorax Carbo Sinensis ◽  
Very High

AbstractThe intensity and extensity of infestation of cormorants (Phalacocorax carbo sinensis) from a colony in Lake Selment Wielki with the tapeworm Paradilepis scolecina (Rudolphi, 1819) was examined. The cormorants were shot in April, August and October 2006 and in August and September 2007. The extensity of infection in all the cormorants under study was very high — even reaching 100 %. The highest intensity of infestation was found in the birds shot in August — 4697 tapeworms per bird in 2006 and 2562 in 2007. The intensity of infestation in the birds which were shot in autumn was less than one-tenth of that found in the birds shot in summer. The lowest intensity of infestation was found in the spring of 2006 — 61 tapeworms per bird.

scholarly journals Helminths of European smelt Osmerus eperlanus (Linnaeus, 1758) in Lake Hańcza and the Vistula Lagoon, with special regard to their zoonotic threats

2018 ◽  
Vol 66 (1) ◽  
pp. 96-106 ◽  
Author(s):  
Janina Dziekońska-Rynko ◽  
Katarzyna Mierzejewska ◽  
Katarzyna Kubiak ◽  
Martyna Rydzewska ◽  
Piotr Hliwa
Keyword(s):  
Alimentary Tract ◽  
Body Cavity ◽  
The Body ◽  
Vistula Lagoon ◽  
Mean Intensity ◽  
Increased Risk ◽  
Osmerus Eperlanus ◽  
The Baltic ◽  
Zoonotic Parasites ◽  
The Vistula Lagoon

Reports published in recent years on the increased risk in the Baltic Sea of fish infection with larvae of nematodes potentially pathogenic to humans have prompted a study of European smelt Osmerus eperlanus with respect to the presence of these parasites in the Vistula Lagoon. Additionally, samples of this fish from Lake Hańcza were comparatively considered. The body cavity, the surface of internal organs, the alimentary tract and the swimbladder of fish from two environmentally different water bodies were taken into account in the analysis. Only the tapeworm Proteocephalus longicollis was found in the alimentary tract of the fish from Lake Hańcza. Depending on the period of study, the prevalence ranged from 60% to 100%, and the mean intensity from 11.5 to 42.0. The helminth fauna of smelt from the Vistula Lagoon was more diverse: Cystidicola farionis occurred with a prevalence from 25.9 to 75.0% and a mean intensity of infection from 2.7 to 66.0%, Proteocephalus longicollis and cystacanths of Corynosoma with a prevalence ranging in different years from 12.0 to 44.0% and from 14.8 to 50.0%, respectively. Zoonotic parasites, such as nematode larvae of the Anisakidae family (Contracaecum sp., Anisakis simplex), occurred in the intestine with a prevalence of 31%, 72% and 22% in consecutive years of the study.

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