Renicola glacialis sp. nov., a New Trematode from the North Sea Fulmar, Fulmarus glacialis (L.), with Observations on its Pathology
A new species Renicola glacialis sp. nov., belonging to the trematode genus Renicola , is described. The species is distinguished from most other renicolids by its relatively large size. Two other species within this size range have been recorded; while it is easy to separate R. glacialis from one o...
Published in: | Journal of Helminthology |
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Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
1972
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Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0022149x00022124 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022149X00022124 |
Summary: | A new species Renicola glacialis sp. nov., belonging to the trematode genus Renicola , is described. The species is distinguished from most other renicolids by its relatively large size. Two other species within this size range have been recorded; while it is easy to separate R. glacialis from one of these species ( R. goliath Wright, 1957) the poor description of the other ( R. secunda Skrjabin, 1924) renders a detailed comparison meaningless. However, the differences in host and geographic location between this and R. glacialis are considered sufficiently great to justify the erection of a new species. The pathology of R. glacialis is discussed; recently established worms elicit only a slight host tissue response, but older infections are invested by a thick connective tissue sheath. The latter shows maximum development around dead worms and is accompanied by pronounced eosinophilia. Attention has been drawn to the use of the excretory vesicle as a diagnostic character. Four distinctly different forms have been described, and it is suggested that this character, together with certain other morphological features, would provide a useful key for the identification of renicolids once such information is available. |
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