Comparative analysis of the mastax musculature of the rotifer species Pleurotrocha petromyzon (Notommatidae) and Proales tillyensis (Proalidae) with notes on the virgate mastax type

Wulfken, Diana; Wilts, Eike F.; Martinez-Arbizu, Pedro; Ahlrichs, Wilko H.

doi:10.1016/j.jcz.2010.08.003

Cited by 7 publications

(8 citation statements)

References 13 publications

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“…3C; white arrowhead) -we found cuticular tubes in the ultrastructure of the fulcrum (Pleurotrocha petromyzon and Proales tillyensis (see Wulfken et al, 2010), Bryceella stylata (see Wilts et al, 2010), Dicranophorus forcipatus (see Riemann and Ahlrichs, 2008), Paraseison annulatus, and S. nebaliae (see Ahlrichs, 1995b). In all of these species, except for F. longiseta, P. annulatus and S. nebaliae, the cuticular tubes are restricted to the fulcrum region.…”

Section: Informational Value Of the Trophi Ultrastructurementioning

confidence: 80%

“…: musculus hypopharyngeus, Ahlrichs, 1995b; musculus fulcro mucosus, Dehl, 1934;dépresseure de piston, De Beauchamp, 1909). While the mastax receptor retractor is usually located in the so-called 'piston' which frontally terminates in the mastax receptor (see Riemann and Ahlrichs, 2008;Wulfken et al, 2010), F. longiseta displays neither a piston nor a mastax receptor located between the rami (Fig. 3A-C).…”

Section: Informational Value Of the Mastax Musculaturementioning

confidence: 99%

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The ultrastructure of the mastax of Filinia longiseta (Flosculariaceae, Rotifera): Informational value of the trophi structure and mastax musculature

Wulfken

Ahlrichs

2012

Zoologischer Anzeiger - A Journal of Comparative Zoology

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Section: Informational Value Of the Trophi Ultrastructurementioning

confidence: 80%

Section: Informational Value Of the Mastax Musculaturementioning

confidence: 99%

The ultrastructure of the mastax of Filinia longiseta (Flosculariaceae, Rotifera): Informational value of the trophi structure and mastax musculature

Wulfken

Ahlrichs

2012

Zoologischer Anzeiger - A Journal of Comparative Zoology

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“…Such an ultrastructure of the fulcrum has been confirmed in the Seisonida Paraseison annulatus and Seison nebaliae (Ahlrichs ); in the ploimid Monogononta Polyarthra vulgaris , Taphrocampa selenura , and Encentrum marinum (Ahlrichs ); in Pleurotrocha petromyzon and Proales tillyensis (Wulfken et al. ); in Bryceella stylata (Wilts et al. ); in Dicranophorus forcipatus (also in the epipharynx) (Riemann & Ahlrichs ); in the ploimid monogononts, Encentrum mustela , Itura aurita , Lindia tecusa, and Asplanchna (Wulfken & Ahlrichs ); and in the flosculariacean monogonont Filinia longiseta (Wulfken & Ahlrichs ).…”

Section: Discussionmentioning

confidence: 84%

Ontogeny of the jaws of monogonont rotifers: the malleate trophi of Rhinoglena and Proalides (Ploima, Epiphanidae)

Smet

Segers

2017

Invertebrate Biology

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Information on the embryonic development of the malleate trophi in Epiphanidae (Rotifera, Monogononta, Ploima) is presented, based on scanning electron microscopy observations in Rhinoglena fertoeensis, R. frontalis, R. kutikovae, R. tokioensis, and Proalides tentaculatus, to contribute to the understanding of this structure of high evolutionary and functional relevance in Rotifera. The first observable and distinctly sclerotized structures were a double row of median transversal sclerites along the longitudinal axis, wherein the future unci, rostellar scleropili, cristae rami, and basal apophyses became recognizable. Fulcrum and manubria arose subsequently; the fulcrum sclerites were longitudinally ordered in a double layer. The rami chambers developed last as lamellar structures. Unci appeared as separate thin, elongate elements, the primary uncini, developing to uncus plates by transversal growth and apposition of sclerite material on the shafts of the uncini. The heads of the uncini showed their greatest development after fusion of their shafts into uncus plates. The interjacent spaces between the heads functioned as a mold, organizing bundles of sclerites which developed into the uniseriate, zigzag‐shaped cristae rami. The fulcrum attained its definite shape by elongation of the double layer of rod‐shaped sclerites into appressed sclerofibrillae. Manubria became visible as a proximal ridge of sclerites, whereupon a triangular lamella composed of crisscross‐oriented sclerites developed distally, growing out to the manubrial chambers. Ramus chambers originated from two longitudinal amorphous lamellae incorporating the median rami sclerites and closing from distal to proximal; subbasal chambers were formed before the basal chambers.

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“…The ventral jaw muscle of L. maerski (vjm: Figure 5C, D; 6G-I) can be compared to the musculus circumglandulis of Rotifera. This muscle connects the rami with other parts of the mallei [31,39,40]. Its ventral position, connection with the ramus and conspicuous shape, resembles the ventral pharyngeal muscle (conspicuous muscle made of several bundle) or the ventral jaw muscle (connection and position) in L. maerski.…”

Section: Comparison Of the Pharyngeal Musculature Of L Maerski With mentioning

confidence: 96%

“…The only muscle having this arrangement is the musculus ramo-manubricus found in Filinia longiseta [41] and Trichocerca rattus [33], both having very peculiar trophi (respectively malleoramate and asymmetrical virgate). In Rotifera, though, the posterior connection is well documented in the abundant work of the series of confocal and TEM studies by the Ahlrichs Group [31,32,[39][40][41], who refers to this muscle as the musculus fulcro ramicus. Furthermore, Riemann and Ahlrichs, emphasize the wide repartition of this muscle within Rotifera, suggesting the homology of this muscle across the taxon [39].…”

Section: Comparison Of the Pharyngeal Musculature Of L Maerski With mentioning

confidence: 98%

Detailed reconstruction of the musculature in Limnognathia maerski (Micrognathozoa) and comparison with other Gnathifera

et al. 2014

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Introduction: Limnognathia maerski is the single species of the recently described taxon, Micrognathozoa. The most conspicuous character of this animal is the complex set of jaws, which resembles an even more intricate version of the trophi of Rotifera and the jaws of Gnathostomulida. Whereas the jaws of Limnognathia maerski previously have been subject to close examinations, the related musculature and other organ systems are far less studied. Here we provide a detailed study of the body and jaw musculature of Limnognathia maerski, employing confocal laser scanning microscopy of phalloidin stained musculature as well as transmission electron microscopy (TEM). Results: This study reveals a complex body wall musculature, comprising six pairs of main longitudinal muscles and 13 pairs of trunk dorso-ventral muscles. Most longitudinal muscles span the length of the body and some fibers even branch off and continue anteriorly into the head and posteriorly into the abdomen, forming a complex musculature. The musculature of the jaw apparatus shows several pairs of striated muscles largely related to the fibularium and the main jaws. The jaw articulation and function of major and minor muscle pairs are discussed. No circular muscles or intestinal musculature have been found, but some newly discovered muscles may supply the anal opening. Conclusions: The organization in Limnognathia maerski of the longitudinal and dorso-ventral muscle bundles in a loose grid is more similar to the organization found in rotifers rather than gnathostomulids. Although the dorso-ventral musculature is probably not homologous to the circular muscles of rotifers, a similar function in body extension is suggested. Additionally, a functional comparison between the jaw musculature of Limnognathia maerski, Rotifera and Gnathostomulida, emphasizes the important role of the fibularium in Limnognathia maerski, and suggests a closer functional resemblance to the jaw organization in Rotifera.

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Comparative analysis of the mastax musculature of the rotifer species Pleurotrocha petromyzon (Notommatidae) and Proales tillyensis (Proalidae) with notes on the virgate mastax type

Cited by 7 publications

References 13 publications

The ultrastructure of the mastax of Filinia longiseta (Flosculariaceae, Rotifera): Informational value of the trophi structure and mastax musculature

The ultrastructure of the mastax of Filinia longiseta (Flosculariaceae, Rotifera): Informational value of the trophi structure and mastax musculature

Ontogeny of the jaws of monogonont rotifers: the malleate trophi of Rhinoglena and Proalides (Ploima, Epiphanidae)

Detailed reconstruction of the musculature in Limnognathia maerski (Micrognathozoa) and comparison with other Gnathifera

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