Species of the nematode genus Amidostomum Railliet and Henry, 1909 in aquatic birds in the Netherlands

Abstract

98 SummaryThe presence of gizzard worms belonging to the genus Amidostomum was studied in birds in the Netherlands during the period 1975 -2003. Amidostomum acutum was found in Anatidae: Anas acuta, A. clypeata, A. crecca, A. penelope, A. platyrynchos, A. strepera The prevalence is only given for bird species where ten or more individuals had been investigated: Anas platyrhynchos (n = 14): 21.4 %; Melanitta nigra (n = 12): 91.7 %; Somateria mollissima (n = 117): 100 %; Anser albifrons (n = 11): 100 % and Cygnus olor (n = 10): 60 %. Based on the present results, much more attention should be paid to the systematics, the epidemiological pattern and the pathogenicity of worms of this genus.

Revision of the species complex Amidostomum acutum (Lundahl, 1848) (Nematoda: Amidostomatidae)

“…These parasites live under the chitinous layer of the gizzard, feeding on the blood of the host, and at a high intensity of infection can cause mass deaths (Borgsteede et al 2005, 2006; Thieltges et al 2006; Kats 2007). …”

Reprint of ‘Association of helminth infections and food consumption in common eiders Somateria mollissima in Iceland’

“…Thieltges et al (2006) counted 416 worms in the most intensively infected eider in the Northern Wadden Sea, a slightly higher burden than the most intensive infection detected in the present study (302 worms). Previously, various authors also reported A. anseris to infect eiders, but a recent review considered the species to infect geese exclusively (representatives of Anser and Branta) (Borgstede et al, 2006). Two nematodes, found in the gizzard of every fourth eider in the study, were S. crassicauda and S. dogieli, but infections were usually restricted to a few worms (Table 2).…”

Helminthes of the Common Eider (Somateria mollissima) on the Eastern Murman, its impact on the digestive activity and physiological state

“…Количественные показатели инвазии уток указанными гельминтами часто имеют очень высокие значения. В литературе неоднократно появлялись сообщения о массовых находках погибших особей обыкновенной гаги -как птенцов, так и взрослых птиц [2][3][4][5]. В качестве возможной причины гибели птиц авторы рассматривали именно высокую интенсивность инвазии разными паразитами.…”

“…В качестве возможной причины гибели птиц авторы рассматривали именно высокую интенсивность инвазии разными паразитами. По результатам проведённых исследований можно выделить группу видов червей, потенциально опасных для жизни и здоровья гаг [2][3][4][5]. К ним следует отнести Paramonostomum alveatum (Trematoda: Notocotylidae), M. pygmaeus, Microsomacanthus microsoma (Cestoda: Hymenolepididae), а также P. phippsi и Polymorphus minutus (Palaeacanthocephala: Polymorphidae).…”