rostellum


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Related to rostellum: oncosphere, coracidium

rostellum

[rä′stel·əm]
(biology)
The anterior, flattened region of the scolex of armed tapeworms.
References in periodicals archive ?
(A) Scolex containing four round suckers and a rostellum armed with two alternating crowns of hooks (400 [micro]m).
Tukruk salgisi ile deriyi duyarsiz hale getirdikten sonra agiz organelinin (rostellum) kesicileri (chelicerler) ile deriyi keser ve hipostom denen kan emmeye yarayan dikensi kismini kesi yerinden dermise yerlestirir.
As part of the results of this study: a)- The transfer ofCvbebus from the subtribe Spiranthinae (where it was commonly placed) to the subtribe Stenorhinchidinae, is proposed, based on the floral morphology (the rostellum and viscidiurn structure), b)- two genera are reported for Colombia as new records, each one with one species: Lyroglossa (L.
It has scolex with hooks and suckers and an armed rostellum. The body is termed as proglottids arranged in a linear series.
"A membrane called the rostellum separates the flower's anther from the stigma making self-pollination impossible," explains the longtime curer and exporter.
The specimen possessed a rudimentary rostellum, a distinguishing characteristic that, according to Rodgers (1941), separated this species from two similar North American species, Anonchotaenia globata and A.