Studies on Larval Trematodes Infecting Freshwater Snails in Pakistan. VII. Echinostome Cercariae
Three new echinostome cercariae parasitizing Lymnaea rufescens in Pakistan are described. Cercaria spinicephala n. sp. is characterized by a collar bearing 26 spines, arranged in an uninterrupted double row, five penetration glands on either side of the esophagus, cystogenous glands with rod-shaped contents, intestinal caeca reaching the posterior region of the body, an almost triangular excretory bladder, ascending excretory ducts enclosing refractile concretions, and a tail without a finfold. C. paraspinicephala n. sp. is furnished with 47 collar spines arranged in an uninterrupted double row, four pairs of penetration glands around the esophagus, an acetabulum larger than the oral sucker, a large, rounded excretory bladder, bunches of cilia in descending excretory ducts, and a thick cytoplasmic covering around the tail. C. heterolophoformis n. sp. is characterized by 25 collar spines arranged in an uninterrupted double row, a small prepharyngeal saccular structure containing bundles of refractile rod-like material, six pairs of large penetration glands laterally along the esophagus, an acetabulum larger than the oral sucker, a small rounded excretory bladder, numerous refractile concretions in the ascending excretory ducts, and a discontinuous caudal finfold..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
1983 |
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| Erschienen: |
1983 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:102 |
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| Sprache: |
Englisch |
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| Beteiligte Personen: |
Haseeb, Muhammad A. [VerfasserIn] |
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| Links: |
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| Themen: |
Biological sciences |
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| doi: |
10.2307/3225831 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
JST086731084 |
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| 100 | 1 | |a Haseeb, Muhammad A. |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Studies on Larval Trematodes Infecting Freshwater Snails in Pakistan. VII. Echinostome Cercariae |
| 264 | 1 | |c 1983 | |
| 336 | |a Text |b txt |2 rdacontent | ||
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| 520 | |a Three new echinostome cercariae parasitizing Lymnaea rufescens in Pakistan are described. Cercaria spinicephala n. sp. is characterized by a collar bearing 26 spines, arranged in an uninterrupted double row, five penetration glands on either side of the esophagus, cystogenous glands with rod-shaped contents, intestinal caeca reaching the posterior region of the body, an almost triangular excretory bladder, ascending excretory ducts enclosing refractile concretions, and a tail without a finfold. C. paraspinicephala n. sp. is furnished with 47 collar spines arranged in an uninterrupted double row, four pairs of penetration glands around the esophagus, an acetabulum larger than the oral sucker, a large, rounded excretory bladder, bunches of cilia in descending excretory ducts, and a thick cytoplasmic covering around the tail. C. heterolophoformis n. sp. is characterized by 25 collar spines arranged in an uninterrupted double row, a small prepharyngeal saccular structure containing bundles of refractile rod-like material, six pairs of large penetration glands laterally along the esophagus, an acetabulum larger than the oral sucker, a small rounded excretory bladder, numerous refractile concretions in the ascending excretory ducts, and a discontinuous caudal finfold. | ||
| 540 | |a Copyright 1983 American Microscopical Society, Inc. | ||
| 650 | 4 | |a Biological sciences |x Biology |x Developmental biology |x Growth and development |x Developmental stages |x Cercariae | |
| 650 | 4 | |a Biological sciences |x Biology |x Anatomy |x Body tissues |x Connective tissues |x Bones |x Pelvis |x Pelvic bones | |
| 650 | 4 | |a Biological sciences |x Biology |x Anatomy |x Digestive system |x Esophagus | |
| 650 | 4 | |a Biological sciences |x Biology |x Anatomy |x Digestive system |x Pharynx | |
| 650 | 4 | |a Biological sciences |x Biology |x Zoology |x Animals |x Mollusks |x Snails | |
| 650 | 4 | |a Biological sciences |x Biology |x Parasitology |x Parasitism | |
| 650 | 4 | |a Biological sciences |x Biology |x Developmental biology |x Growth and development |x Developmental stages |x Larvae | |
| 650 | 4 | |a Physical sciences |x Earth sciences |x Hydrology |x Limnology |x Surface water |x Fresh water | |
| 650 | 4 | |a Biological sciences |x Biology |x Zoology |x Animal anatomy |x Animal morphology |x Animal organs |x Animal glands | |
| 650 | 4 | |a Health sciences |x Medical conditions |x Infections | |
| 655 | 4 | |a research-article | |
| 700 | 1 | |a Khan, Daler |e verfasserin |4 aut | |
| 773 | 1 | 8 | |g volume:102 |g year:1983 |g number:3 |g pages:251-257 |
| 856 | 4 | 0 | |u https://www.jstor.org/stable/3225831 |3 Volltext |
| 856 | 4 | 0 | |u https://doi.org/10.2307/3225831 |3 Volltext |
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| 912 | |a GBV_JST | ||
| 951 | |a AR | ||
| 952 | |d 102 |j 1983 |e 3 |h 251-257 | ||