Apical Sense Organ of Macracanthorhynchus hirudinaceus (Acanthocephala)

Dunagan, T. T.; Miller, Donald M.

doi:10.2307/3281054

Cited by 27 publications

(9 citation statements)

References 4 publications

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“…Although Meyer (1933) already investigated the praesoma of this species by light microscopy, his description was not unambiguous, especially with respect to the subepidermal musculature. Moreover, previous studies on the Palaeacanthocephala species Acanthocephalus anguillae (Müller, 1780) and the Eoacanthocephala species Paratenuisentis ambiguus (Van Cleave, 1921) (see suggest that several functional entities described by Dunagan and Miller (1974) in M. hirudinaceus belong to greater morphological units. Both, the ambiguities in previous descriptions as well as the suggestions based on findings in other Acanthocephala species induced the present light microscopic re-examination of the praesoma in M. hirudinaceus.…”

Section: Introductionmentioning

confidence: 92%

“…Taraschewski 2000 in species with a doubleMuskelschicht (Meyer 1933), muscular wall walled receptacle and receptacle wall muscle (Schmidt 1972), receptacle wall (Hyman 1951, (Dunagan andMiller 1974) illustration of Acanthocephalus; in the present proboscidis (Kaiser 1893;Kilian 1932), definition the term comprises "proboscis retractor Invaginatormuskel (Meyer 1933), primary retractor (part 1, 2)", "dorsal cone invertor" and "ventral cone muscles (Schmidt 1972), invertor muscle (Nickol and invertor" described by Dunagan and Miller (1974) Holloway 1968), proboscis invertor (Wanson and in M. hirudinaceus Nickol 1975) Receptacle Derived from Dunagan and Miller (1974) who Äußere Rüsselscheidenwandung (Hamann 1891), protrusor (po) described a dorsal and a ventral "receptacle protrusor" Protrusor receptaculi dorsalis (et) Protrusor receptaculi in M. hirudinaceus, termed "proboscis constrictor" ventralis (Kaiser 1893;Kilian 1932), dorsal and ventral when its contractile filaments are circularly orientated receptacle protrusors (Hyman 1951), primary dorsal (see Fig. 4 in the present study) and ventral protrusors (Schmidt 1972 microscope.…”

Section: Circular Andmentioning

confidence: 98%

“…Derived from the "circular and longitudinal muscle Rüsselmuskulatur (Hamann 1891), Sarkolemmaring longitudinal layer of the proboscis" Nickol and Holloway (1968) der Rüsselscheide (Kaiser 1893), musculature of the described in Corynosoma hamanni (Linstow, 1892); erstes Muskelsegment der Körperwand (Meyer 1933) praesoma (pc, pl) note: the longitudinal subtegumental muscle layer of the proboscis described in several Palaeacanthocephala and Eoacanthocephala species probably refers to the outer tube of the complex proboscis retractor (see Taraschewski (Meyer 1933), circular muscle layer (of the musculature of the (1967) in Acanthocephalus ranae (Schrank, 1788) proboscis) (Hyman 1951), subtegumental musculature trunk (tc, tl) (of the metasoma) (Taraschewski 2000) Medulla (me) Anterior non-contractile part of the receptacle; Markraum der Rüsselscheide (Kaiser 1893), derived from Dunagan and Miller (1974), Markbeutel des Receptaculi proboscidis (Kilian 1932), who described a "medullary fluid" in its inside in Receptaculum-Plasma (Meyer 1933), cytoplasmic part Macracanthorhynchus hirudinaceus of the proboscis receptacle wall (Taraschewski 2000) Midventral Adopted from Hyman (1951) (Kilian 1932), vorderer und muscle (ml) hinterer (ventraler) Rinnenmuskel (Meyer 1933), midventral receptacle muscle (Hyman 1951), primary ventral protrusors and longitudinal band (Schmidt 1972), ventral receptacle muscle of proboscis receptacle (Wanson and Nickol 1975) Muscle plate (mp) Derived from Haffner (1943) who described a Ringmuskelplatte (Kaiser 1893), muskulöse Platte "Muskelplatte" in Oligacanthorhynchus thumbi (Kilian 1932) Muscle sac (ms) Posterior contractile part of the receptacle; term that Innere Rüsselscheidenwandung (Hamann 1891), comprises the probable homologous tissues inner wall innere Rüsselscheide (Kaiser 1893), Receptaculum-(e.g. Taraschewski 2000 in species with a doubleMuskelschicht (Meyer 1933), muscular wall walled receptacle and receptacle wall muscle (Schmidt 1972), receptacle wall (Hyman 1951, (Dunagan andMiller 1974) illustration of Acanthocephalus; in the present proboscidis (Kaiser 1893;…”

Section: Circular Andmentioning

confidence: 99%

“…4 in the present study) and ventral protrusors (Schmidt 1972 microscope. The terminology of the neuronal structures (nerves, sense organs, sensory support cell) has been adopted from Dunagan and Miller (1983) and Miller and Dunagan (1985). Regarding the musculature, the nomenclature used in the present study is listed in Table 1 (for a comparison see also Miller and Dunagan 1985: Table 5.5).…”

Section: Circular Andmentioning

confidence: 99%

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The musculature of the praesoma in Macracanthorhynchus hirudinaceus (Acanthocephala, Archiacanthocephala): re-examination and phylogenetic significance

Herlyn

2002

Zoomorphology

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The endoparasitic Archiacanthocephala (Acanthocephala) consist of the Aporhynchida, Moniliformida, Gigantorhynchida and Oligacanthocephala. In the present study the organisation of the praesoma in Macracanthorhynchus hirudinaceus (Archiacanthocephala, Oligacanthorhynchida) was investigated by light microscopy based on series of semithin sections (5 µm) with special emphasis on the musculature. The study was carried out to substantiate the ground pattern of the Acanthocephala and to elucidate the phylogenetic relationships within the Archiacanthocephala. A comparison of the presented morphology in M. hirudinaceus with literature data leads to the assumption that the muscle plate and the midventral longitudinal muscle evolutionarily originated from the circular musculature of the praesoma and the receptacle, respectively. Whereas the midventral longitudinal muscle probably represents an autapomorphy of the taxon Oligacanthorhynchida, a muscle plate can be regarded as an autapomorphy of a monophylum consisting of the Moniliformida, Gigantorhynchida and Oligacanthorhynchida. Moreover, the outer wall in species with a double-walled receptacle probably corresponds to the receptacle protrusor or receptacle constrictor in species with a single-walled receptacle, and thus not only a receptacle but also an additional surrounding muscle can be assumed for the ground pattern of the Acanthocephala. For a better comparability the discussion includes a tabular survey of the synonyms used in the literature.

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Section: Introductionmentioning

confidence: 92%

Section: Circular Andmentioning

confidence: 98%

Section: Circular Andmentioning

confidence: 99%

Section: Circular Andmentioning

confidence: 99%

See 2 more Smart Citations

The musculature of the praesoma in Macracanthorhynchus hirudinaceus (Acanthocephala, Archiacanthocephala): re-examination and phylogenetic significance

Herlyn

2002

Zoomorphology

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“…Van Cleave and Bullock (1950) and Cable and Dill (1967) described such an apical organ in the eoacanthocephalans Neoechinorhynchus emydis and Paulisentis fractus, and Gee (1987) stated that the apical organs of the eoacanthocephalans N. chrysemydis, N. cylindratus, N. emydis, N. emyditoides, N. magnapapillatus, N. pseudemydis, Octospinifer macilentus and P. fractus are dierent from the apical sense organs of the Archiacanthocephala (see Budziakowski and Mettrick 1986;Bozzola 1989, 1992;Miller 1983, 1986;Dunagan and Schmitt 1995).…”

Section: Introductionmentioning

confidence: 99%

First description of an apical epidermis cone in Paratenuisentis ambiguus (Acanthocephala: Eoacanthocephala) and its phylogenetic implications

Herlyn¹

2001

Parasitol Res

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The proboscis apex of the eoacanthocephalan parasite Paratenuisentis ambiguus was studied, using electron and light microscopy, for a better understanding of the parasite's attachment at the intestinal wall of its definitive hosts (Anguilla rostrata and A. anguilla). The results suggest the presence of an epidermis cone with three nuclei at the proboscis apex of P. ambiguus instead of an apical sense organ, as has been previously supposed. Dendritic terminations, sensory nerves and secretory ducts were absent. The existence of many fibres suggests a mechanical function of the epidermis cone. Probably, it presses the proboscis apex and the anterior hooks into the intestinal wall of the definitive host. The presence of an epidermis cone in other eoacanthocephalan species can be derived from data in the literature. The absence of an epidermis cone outside the Eoacanthocephala suggests that it is an evolutionary innovation, supporting the monophyly of the Eoacanthocephala.

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Acanthocephala inThe Journal of Parasitology, 1914–2014

Amin¹

2016

A Century of Parasitology

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Apical Sense Organ of Macracanthorhynchus hirudinaceus (Acanthocephala)

Cited by 27 publications

References 4 publications

The musculature of the praesoma in Macracanthorhynchus hirudinaceus (Acanthocephala, Archiacanthocephala): re-examination and phylogenetic significance

The musculature of the praesoma in Macracanthorhynchus hirudinaceus (Acanthocephala, Archiacanthocephala): re-examination and phylogenetic significance

First description of an apical epidermis cone in Paratenuisentis ambiguus (Acanthocephala: Eoacanthocephala) and its phylogenetic implications

Acanthocephala inThe Journal of Parasitology, 1914–2014

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