A new hypothesis concerning attachment of parasitic nematodes (Spirurida: Acuarioidea) to the upper alimentary tract of birds

Autor:	Cheryl M. Bartlett
Rok vydání:	1991
Předmět:	Nematode biology Host (biology) Ultrastructure Parasite hosting Animal Science and Zoology Pileus Anatomy biology.organism_classification Ecology Evolution Behavior and Systematics Alimentary tract Acuarioidea Spirurida
Zdroj:	Canadian Journal of Zoology. 69:1829-1833
ISSN:	1480-3283 0008-4301
DOI:	10.1139/z91-252
Popis:	A gelatinous caplike structure found in vivo around the anterior end of two species of acuarioid nematode parasites (Skrjabinocerca prima Shikhobalova, 1930 and Skrjabinoclava inornatae Wong and Anderson, 1988) is described, termed a "pileus," and suggested as the means by which the nematodes attach to the oesophageal and proventricular mucosa of their bird hosts (Recurvirostra americana and Catoptrophorus semipalmatus inornatus, respectively). Nematodes were embedded in host tissues to the depth of the posteriormost extent of the pileus, which corresponded to the posteriormost extent of the cuticular cordons on the external surface of the anterior end of the nematode. Each cordon, C-shaped in cross section, may serve as a conduit that allows liquid nutrients in the lumen of the alimentary tract to seep into the nematode's mouth, thus enabling the parasite to feed when tightly sealed by the pileus into host tissues.
Databáze:	OpenAIRE
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