Chaetotaxy and armature of Ichthyocotylurus erraticus (Rudolphi, 1809) and I. variegatus (Creplin, 1825) cercariae (Digenea, Strigeidae)

Bell, Andrew S.; Gibson, David I.; Sommerville, Christina

doi:10.1007/s004360050211

Cited by 8 publications

(5 citation statements)

References 15 publications

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“…The total number of nuclei in the tail is 34.4±0.2 (N=10). n, nucleus; nc, nerve cord; arrow, 5HT-IR neurones, arrow head, α-tubulin-IR processes conformity with that of sensory receptors described by another authors (Stenko 1985;Kostadinova 1993;Bell et al 1997;Abdul-Salam and Sreelatha 2004). Immunostaining (IS) with anti-α-tubulin has the advantage that it can be combined with other IS techniques, thereby enabling comparisons between the sensory receptors and the general NMS.…”

Section: Discussionmentioning

confidence: 99%

The neuro-muscular system in cercaria with different patterns of locomotion

et al. 2010

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The neuro-muscular system (NMS) of cercariae with different swimming patterns was studied with immunocytochemical methods and confocal scanning laser microscopy. Specimens of the continuously swimming Cercaria parvicaudata, Maritrema subdolum and Himasthla elongata were compared with specimens of the intermittently swimming Cryptocotyle lingua and the attached Podocotyle atomon. The patterns of F-actin in the musculature, 5-HT immunoreactive (-IR), FMRFamide-IR neuronal elements, α-tubulin-IR elements in the nervous and sensory systems and DAPI-stained nuclei were investigated. The general plan of the NMS was similar in all cercariae studied. No major structural differences in the patterns of muscle fibres were observed. However, in the tail of C. lingua, transverse muscle fibres connecting the bands of longitudinal muscles were found. No major structural differences in the 5-HT- or FMRFamide-IR nervous systems were observed. The number of 5-HT-IR neurones in the cercarial bodies varied between 12 and 14. The number and distribution of the α-tubulin-IR processes on the cercarial bodies and tails differed from each other. The relation between the number and structure of the α-tubulin-IR processes and the host finding strategy of the cercariae is discussed. A detailed schematic picture of the NMS in the tails of C. lingua and M. subdolum is presented.

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Section: Discussionmentioning

confidence: 99%

The neuro-muscular system in cercaria with different patterns of locomotion

et al. 2010

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“…It should also be mentioned that at least some of the acetabular musculature has three- or sixfold radial symmetry: meridional muscles in the acetabular cavity are organized in three sectors and those in the outer wall in six sectors, and three sets of protractor muscles intersect over the dorsal pole of the acetabulum. Sixfold symmetry was also clearly shown for the arrangement of acetabular sensilla (reviewed in Bell et al , 1996) and their innervation patterns (Niewiadomska & Moczoń, 1984; Niewiadomska et al , 1996). The muscle architecture of the acetabulum in D. pseudospathaceum is identical in all essential aspects to that described for another diplostomoid trematode, Cotylurus cornutus (Krupenko, 2014a).…”

Section: Discussionmentioning

confidence: 85%

Muscle architecture during the course of development ofDiplostomum pseudospathaceumNiewiadomska, 1984 (Trematoda, Diplostomidae) from cercariae to metacercariae

Petrov

Podvyaznaya

2015

J. Helminthol.

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Recent confocal microscopy studies have greatly expanded our knowledge of muscle systems in cercariae and adult digeneans, but the gross anatomy and development of metacercarial musculature remain relatively little known. To further our understanding of metacercarial development, this study used phalloidin staining and confocal microscopy to examine changes in muscle architecture over the course of development from cercariae to infective metacercariae in Diplostomum pseudospathaceum Niewiadomska, 1984. The paper describes muscle development in the body wall, anterior organ (oral sucker), acetabulum, pharynx and midgut and in the musculo-glandular organs that first appear in metacercariae (lappets and holdfast). The muscle architecture of the cercarial tail is also described. The results of the study support previously reported observations that diplostomid musculature undergoes substantial transformation during metacercarial development. The most profound changes, involving extensive remodelling and replacement of cercarial muscles, were seen in the body-wall musculature and in the anterior organ as it developed into the oral sucker. Muscle systems of other cercarial organs showed more gradual changes. The adaptive importance of developmental changes in musculature is discussed.

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“…Niewiadomska and Moczoń (1982) and investigated the pattern of sensory receptors in cercariae of D. pseudospathaceum, and Bell et al (1997) have reviewed the patterns of chaetotaxy in taxon Strigeidae. Our results are in general agreement with the previous studies.…”

Section: Discussionmentioning

confidence: 99%

“…Information about the chaetotaxy in Diplostomidae and Strigeidae has been reviewed by Czubaj and Niewiadomska (1996) and Bell et al (1997). As far as we know, the NMS in cercariae from the families Strigeidae and Cyathocotylidae has never been described before.…”

Section: Introductionmentioning

confidence: 98%

The neuromuscular system in freshwater furcocercaria from Belarus. II Diplostomidae, Strigeidae, and Cyathocotylidae

et al. 2011

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The neuromuscular system (NMS) in cercariae of Diplostomum pseudospathaceum, Cotylurus szidati, Australapatemon burti, Holostephanus volgensis, and Paracoenogonimus ovatus was studied with immunocytochemical methods and confocal scanning laser microscopy. The patterns of F-actin in the musculature, 5-HT immunoreactive (-IR), FMRF-amide-IR neuronal elements, and α-tubulin-IR in sensory receptors were investigated. The NMS in the five species studied were compared with each other and with three species of Schistosomatidae studied earlier (Bilharziella polonica, Trichobilharzia szidati, and Trichobilharzia franki). No major structural differences in the musculature, the 5-HT-IR or FMRF-IR neuronal elements were noticed between the cercariae. The minor variations observed in the musculature were related to the size and organization of the muscle fibers. The checked pattern formed by the transverse muscle fibers in the tail stems of D. pseudospathaceum, C. szidati, A. burti, H. volgensis, and P. ovatus was not observed in B. polonica, T. szidati, and T. franki. A trend in the differentiation of the longitudinal muscle fibers in the furca from evenly distributed fibers in H. volgensis and P. ovatus to many bundles in D. pseudospathaceum and two well-organized lateral bundles in C. szidati, A. burti, and Trichobilharzia spp. was observed. The transverse muscle fibers in the furca follow the same trend. The number of 5-HT-IR neurons in the cercarial bodies varied between 10 and 16. In cercariae of H. volgensis and P. ovatus, the central nervous system (CNS) was less centralized compared to the CNS in the other species studied, with only two 5-HT-IR marker neurons in each brain ganglion and the other neurons distributed evenly along the main cords. In the tails of H. volgensis and P. ovatus, many transverse 5-HT-IR comissures were found. In the tails of higher strigeidid cercariae, only a few crosslinks were observed. The number and distribution of sensory receptors on the bodies and tails of the cercarial species differed from each other. A trend in the differentiation of the sensory receptors in the tails was discerned. A process of grouping and decrease in number of ciliated receptors in the stem and in the furca from H. volgensis and P. ovatus to Schistosomatid cercariae took place.

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Chaetotaxy and armature of Ichthyocotylurus erraticus (Rudolphi, 1809) and I. variegatus (Creplin, 1825) cercariae (Digenea, Strigeidae)

Cited by 8 publications

References 15 publications

The neuro-muscular system in cercaria with different patterns of locomotion

The neuro-muscular system in cercaria with different patterns of locomotion

Muscle architecture during the course of development ofDiplostomum pseudospathaceumNiewiadomska, 1984 (Trematoda, Diplostomidae) from cercariae to metacercariae

The neuromuscular system in freshwater furcocercaria from Belarus. II Diplostomidae, Strigeidae, and Cyathocotylidae

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