Morphological features of Microsomacanthus baeri Czaplinski and Vaucher 1977 (Cestoda, Hymenolepididae)
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During standard parasitological research on West Pomeranian ducks, con- ducted by the Laboratory of Biology and Ecology of Parasites in the years 2000-2011, 16 tapeworms were found in the intestines of five Malards (Anas platyrhynchos) and one Tufted Duck (Aythya fuligula). The tapeworms were classified as Microsomacan- thus baeri Czaplinski & Vaucher 1977 on the basis of the segments' internal structure. The presence of this tapeworm in Polish fauna has been indicated beforehand, howe- ver, the reports were merely of a contributory character, thus the aim of this thesis was a morphometric characteristic of this parasite.Keywords:
Aythya
Anas
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Morphology
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Taxonomic, topical and quantitative structure of the community of intestinal flukes (Digenea) of mallards, Anas platyrhynchos Linnaeus, 1758 from the area of Szczecin. A total of 55 mallards (Anas platyrhynchos L.) from the area of Szczecin were examined for the presence of intestinal flukes (Digenea). This study covered the taxonomic structure (specific composition and taxonomic affiliation of the parasites), topical structure (parasites' distribution within the host's organism), and quantitative structure (infection intensity, abundance, prevalence, and infection index "Z"). Flukes were found in 69.1% of the birds studied. The highest intensity of infection and prevalence exhibited species of the family Echinostomatidae (Echinostoma revolutum, Echinostoma miyagawai, Echinostoma sp., Echinoparyphium recurvatum) and Notocotylus attenuatus of the family Notocotylidae. The mallards surveyed hosted 15 species of flukes, representing 6 families. Echinostoma miyagawai Ishii, 1932 has been found for the first time in Poland. The present findings of Psilotrema similium and Prosthogonimus ovatus in mallard constitute new host records for these parasites.
Digenea
Anas
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Although the mallard, Anas platyrhynchos, is the most common wild duck in Poland, as well as in the entire Palearctic, it is extremely rarely studied by comprehensive parasitological surveys. The aim of this study was to present a synthesis on the species composition of enteric helminths of the mallard in north-western Poland. The study was carried out in 1999-2006 and involved parasitic worms isolated from the alimentary tracts of 187 mallards (Anseriformes: Anatidae). Following isolation, the parasites were preserved in 70% ethylene and stained (flatworms) or viewed in transient light (nematodes and acanthocephalans). Taxonomic identity of the worms was determined using taxonomic keys and numerous original papers. The studies have revealed that the parasitic community of this host in the north-west part of Poland is relatively complex, composed of 51 species of helminths of four systematic groups: 16 digenean species, 23 tapeworms, 9 nematodes, and 3 acanthocephalans. The material also revealed five new to Polish fauna parasitic species: one trematode (Echinostoma miyagawai) and four tapeworms (Microsomacanthus baeri, M. pachycephala, Monotestilepis tadornae, and Sobolevicanthus aculeostileticus). On the other hand, for another 11 species (Prosthogonimus ovatus, Psilotrema simillimum, Australapatemon minor, Leucochloridiomorpha lutea, Psilostomum brevicolle, Echinocotyle rosseteri, Fimbriarioides sp., Retinometra giranensis, Anisakinae gen. sp., Pseudocapillaria mergi i Polymorphus magnus) the mallard was found to be a new host.
Anas
Anseriformes
Digenea
Anatidae
Acanthocephala
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During the parasitological examination of 288 wild ducks from north-western Poland, 18 tapeworms were found in the intestines (jejunum, ileum and rectum) of six birds, which, based on the structure of the scolex, internal organs and the presence of cirrus with an internal additional sac, were determinated as Dicranotaenia stenosacculata Macko, 1988. Tapeworms were found in two young females Bucephala clangula, one young female Aythya marila as well as two adult males Aythya fuligula. The aim of the study was to present the morphological and ecological characteristics of the species, recently discovered for the first time in the fauna of Poland.
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Abstract The study aimed to describe morphological and morphometric characteristics of species representing the genera Diplostomum Nordmann, 1832 and Ornithodiplostomum Dubois, 1936, originating from naturally infected birds in the Czech Republic and in Poland, and to compare their species richness and the intensity of infection in their avian hosts. Diplostomum mergi Dubois, 1932, D. parviventosum Dubois, 1932, D. phoxini (Faust, 1918), D. pusillum (Dubois, 1928), and Ornithodiplostomum scardinii (Schulman, 1952) were found in the gossander (Mergus merganser). D. parviventosum was found in the velvet scoter (Melanitta fusca). D. pungitii Shigin, 1965 was found in the tufted duck (Aythya fuligula), common eider (Somateria mollissima), common goldeneye (Bucephala clangula), and in the long-tailed duck (Clangula hyemalis). D. spathaceum (Rudolphi, 1819) was found in the mallard (Anas platyrhynchos). Morphology and morphometry of those Diplostomum species from the Czech Republic and from Poland were not analyzed before. The morphological and morphometric description of the adult form of O. scardinii presented in this study has been the first such description of a specimen obtained from a naturally infected bird. The highest intensity of infection was observed in the gossander (D. pusillum and D. mergi). Study results provided new data on the occurrence of the Diplostomum and O. scardinii trematodes in the Czech Republic and in Poland.
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Digenea
Aythya
Anatidae
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Records are presented of 11 species of parasitic helminths recovered from 37 American avocets. Birds were collected in Kansas and Colorado from April 1973 to August 1974. Parasites found included 3 trematodes, 2 nematodes, 1 acanthocephalan and 5 cestodes, 4 of which are new species. Hymenolepis cervotestis sp.n. (Hymenolepididae) is described from the small intestine of 7 avocets. It exhibits extreme protandry with the testes appearing before external segmentation is evident. Sobolevicanthus coloradensis sp.n. (Hymenolepididae) is described from the small intestine of 4 avocets. This species is found to have its scolex embedded in the intest-tinal mucosa of its host. Diorchis recurvirostrae sp.n. (Hymenolepididae) is described from specimens recovered from the small intestine of 5 avocets. Diplophallus coili sp.n. (Acoleidae) is described from the small intestine of all 37 avocets. The family Diploposthidae is suppressed and the family Acoleidae is emended to include the 4 genera previously placed in Diploposthidae. A key to the genera of Acoleidae is presented.
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Tapeworms of domestic ducks (Anas platyrhynchos dom.) causing helminthiasis and serious damage to the hosts, cause economic damage in the poultry industry. Helminthological research devoted to the study of the parasite fauna, including tapeworms of domestic ducks, has been carried out in many countries. But there is no review information on the study of the helminth fauna of domestic ducks. We take our own materials and literature data and summarise the information on cestode parasites of Anas platyrhynchos dom., which have been recorded in the world until 2020. Each species is provided with the following data: scientific name, authority and year, intermediate and auxiliary hosts, habitat in the host body, collecting localities and geographic distribution, prevalence and intensity of infection and literature sources. Based on our own research and analysis of literature data, it was revealed that hitherto there are 419 species of helminths (Trematoda – 213, Cestoda – 89, Nematoda – 79, Acanthocephala – 11) recorded parasitising domestic ducks. The tapeworms found in Azerbaijan belong to four families (Dilepididae – 3, Hymenolepididae – 68, Davaineidae – 13, Diphyllobothriidae – 5). In Azerbaijan, 11 out of 89 species of helminths have been found in domestic ducks. Six of them were also noted in the course of our helminthological studies. The cestoda Diorchis inflata was recorded the first time in domestic ducks in Azerbaijan. Most species of cestodes were found in the north-eastern regions of Azerbaijan (Shabran – 11 species, Khachmaz – 6 species) and the southern region (Astara – 4 species). All of these areas are located on the shores of the Caspian Sea and are located on the annual migration route of wild birds involved in the spread of cestodes, which are considered biohelminths. Six species (Drepanidotaenia lanceolata, Hymenolepis apodemi, Hymenolepis diminuta, Ligula interrupta, Ligula intestinalis, Schistocephalus solidus) of cestodes parasitize both birds and mammals (D. lanceolata, H. diminuta in humans).
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Acanthocephala
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