The somatic musculature of Bryceella stylata (Milne, 1886) (Rotifera: Proalidae) as revealed by confocal laser scanning microscopy with additional new data on its trophi and overall morphology

Wilts, Eike F.; Ahlrichs, Wilko H.; Arbizu, Pedro Martínez

doi:10.1016/j.jcz.2009.08.001

Cited by 21 publications

(22 citation statements)

References 20 publications

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“…We adopt the terminology used by Wilts et al (2009) for descriptions of particular longitudinal muscle sets but without implying homology. The somatic musculature includes both circular Wbers (musculi circulares) and longitudinal Wbers (musculi longitudinales) (Figs.…”

Section: Musculaturementioning

confidence: 99%

“…Recent investigations probing the internal anatomy of select rotifers have shown that both neuronal organization (e.g., Kotikova 1995Kotikova , 1997Kotikova , 1998Kotikova et al 2005;Hochberg 2006) and muscular organization (e.g., Kotikova et al 2001Kotikova et al , 2004Santo et al 2005;Sørensen 2005a, b;Riemann et al 2009;Wilts et al 2009;Leasi and Ricci 2010) are fairly conserved within Rotifera, but that some species have deviated widely from these conserved patterns as they have adapted diVerent methods of locomotion (Hochberg and Ablak Gurbuz 2008) and defense (Hochberg and Ablak Gurbuz 2007). To date, very little is known about the neuromuscular organization of colonial rotifers, and therefore, how it diVers from their solitary relatives and how in turn it might provide insights into the evolution of coloniality.…”

Section: Introductionmentioning

confidence: 99%

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Neuromuscular organization of the freshwater colonial rotifer, Sinantherina socialis, and its implications for understanding the evolution of coloniality in Rotifera

Hochberg

Lilley

2010

Zoomorphology

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Coloniality among rotifers is rare, and while the adaptive signiWcance of the lifestyle has been explored previously, there are few details about how it may have inXuenced the morphology of colony members. In this study, we use confocal laser scanning microscopy combined with cyto-and immunohistochemistry to determine if the colonial rotifer, Sinantherina socialis, diVers in neuromuscular organization relative to other colonial and solitary forms. Our observations indicate that the patterns of serotonergic neurons and somatic muscles in S. socialis are broadly similar to other rotifers. At the neuronal level, the distribution of serotonergic (5HT-IR) neurons in S. socialis is most similar to colony-forming species of Conochilus: (1) paired nerve cords extend the length of the body; (2) the cerebral ganglion innervates the corona with paired neurites that form a neuronal ring; and (3) a single pair of neurites innervates the ventral sensory antennae. Unique to S. socialis is the presence of two additional neuronal rings that supply the corona and may function to modulate ciliary beat. At the muscular level, S. socialis displays a typical pattern of somatic muscle organization similar to other rotifers, but diverges from the pattern in three signiWcant ways: (1) somatic circular muscles form complete rings; (2) circular muscles are distinguishable based on their size and position in the body; and (3) transverse muscles are present within the corona and presumably function to modify its shape for feeding and defensive purposes. These diVerences in neuromuscular organization may be adaptations to the colonial and/or sessile lifestyle, both of which are characteristic of S. socialis.

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Section: Musculaturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Neuromuscular organization of the freshwater colonial rotifer, Sinantherina socialis, and its implications for understanding the evolution of coloniality in Rotifera

Hochberg

Lilley

2010

Zoomorphology

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“…Moreover, these new morphological data on Bryceella are useful for a future cladistic analysis of the Proalidae as suggested by several authors (SØRENSEN, 2005;WILTS et al, 2009a;WILTS et al, 2009b).…”

Section: Introductionmentioning

confidence: 76%

“…inq. To this we rely on our own observations and the descriptions given by MILNE (1886), BRYCE (1897), RODEWALD (1934), RODEWALD (1935), KOSTE (1978), DE SMET (1996), KOSTE andTERLUTTER (2001) andWILTS et al (2009b). Bryceella perpusilla n. sp.…”

Section: Differential Diagnosismentioning

confidence: 99%

“…The species occur in different aquatic and semiaquatic habitats like moors, the psammon of acid waters, mosses and leaf litter. Although new data on the morphology of Bryceella stylata have been published recently (WILTS et al, 2009b, WILTS et al, 2010, our knowledge of B. tenella remains insufficient. This particularly also * Corresponding author 472 E. F. WILTS et al…”

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confidence: 99%

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Description of Bryceella perpusilla n. sp. (Monogononta: Proalidae), a New Rotifer Species from Terrestrial Mosses, with Notes on the Ground Plan of Bryceella Remane, 1929

Wilts

Arbizu

Ahlrichs

2010

International Review of Hydrobiology

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We here describe the new proalid rotifer species Bryceella perpusilla n. sp. on the basis of light and electron microscopy. The species, certainly representing one of the smallest rotifer and even metazoan species at all, was obtained in January 2008 from terrestrial mosses of North-west Germany. Bryceella perpusilla n. sp. is distinguished from other species of the genus by the very small size, the slender body outline, the short apical styli, the triangular rostrum, the outward curving, blunt and rod-shaped toes, the four-nucleated vitellogermarium, the slender manubria and the caudally directed alulae. With our observations, that can be used for future cladistic analyses of the Proalidae, we are able to define the generic diagnosis of Bryceella more precisely and to give an adapted species key. IntroductionThe phylum Rotifera is an astonishingly diverse group of aquatic microinvertebrates, rarely exceeding 0.5 mm, that contains more than 2,000 known species worldwide (WAL- LACE et al., 2006;SEGERS, 2007). The representatives inhabit all kinds of water environments. The monogonont taxon Proalidae is a polyphyletic group (see WILTS et al., 2009a; DE SMET, in press.) of about 50 species that occur free-living, parasitic or epizoic in freshwater, saline water or moist terrestrial habitats. Within Proalidae, one of the smallest genera is Bryceella REMANE, 1929 currently containing only two species following DE SMET (1996) and the most recent rotifer checklist published by SEGERS (2007): Bryceella stylata (MILNE, 1886) and Bryceella tenella (BRYCE, 1897). The species occur in different aquatic and semiaquatic habitats like moors, the psammon of acid waters, mosses and leaf litter. Although new data on the morphology of Bryceella stylata have been published recently (WILTS et al., 2009b, WILTS et al., 2010, our knowledge of B. tenella remains insufficient. This particularly also * Corresponding author 472 E. F. WILTS et al.

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Introduction

Polilov¹

2016

At the Size Limit - Effects of Miniaturization in Insects

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The somatic musculature of Bryceella stylata (Milne, 1886) (Rotifera: Proalidae) as revealed by confocal laser scanning microscopy with additional new data on its trophi and overall morphology

Cited by 21 publications

References 20 publications

Neuromuscular organization of the freshwater colonial rotifer, Sinantherina socialis, and its implications for understanding the evolution of coloniality in Rotifera

Neuromuscular organization of the freshwater colonial rotifer, Sinantherina socialis, and its implications for understanding the evolution of coloniality in Rotifera

Description of Bryceella perpusilla n. sp. (Monogononta: Proalidae), a New Rotifer Species from Terrestrial Mosses, with Notes on the Ground Plan of Bryceella Remane, 1929

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