Functional morphology and feeding behavior of Streblospio benedicti and S. shrubsolii (Polychaeta: Spionidae)

Dauer, Daniel M.; Mahon, Heidi K.; Sardá, Rafael

doi:10.1007/978-94-017-0655-1_19

Cited by 14 publications

(26 citation statements)

References 24 publications

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“…Although this ciliation mainly serves to transport food particles to the mouth (e.g. Dauer 1985Dauer , 1991Dauer et al 2003;Worsaae 2003), at least in some species this is assisted by quick movements of the palps (Dauer and Ewing 1991) or the palps are used for resuspending food particles (Dauer 1985). Most likely these movements require a more elaborate musculature, such as has been described for P. cirrifera.…”

Section: Fig 4 A-dmentioning

confidence: 94%

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Reconstruction of the musculature of Magelona cf. mirabilis (Magelonidae) and Prionospio cirrifera (Spionidae) (Polychaeta, Annelida) by phalloidin labeling and cLSM

et al. 2005

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Recent investigations have suggested that a lack of circular muscle fibers may be a common situation rather than a rare exception in polychaetes. As part of a comparative survey of polychaete muscle systems, the F-actin musculature subset of Magelona cf. mirabilis and Prionospio cirrifera were labeled with phalloidin and three-dimensionally analyzed and reconstructed by means of cLSM. Obvious similarities are sublongitudinal lateral, circumbuccal, palp retractor, dominating dorsal longitudinal, perpendicular lateral and ventral transverse muscles. Differences between M. cf. mirabilis and P. cirrifera are: (1) two types of prostomial muscles (transversal and longitudinal) in M. cf. mirabilis versus one type (diagonal) in P. cirrifera; (2) one type of palp muscles (longitudinal) in M. cf. mirabilis versus three types (longitudinal, diagonal, circular) in P. cirrifera; (3) five ventral longitudinal muscles (ventromedian, paramedian, ventral) in M. cf. mirabilis versus four (two paramedian, two ventral) in P. cirrifera. Ventral and lateral transverse fibers are present in the thorax, but absent in the abdomen of M. cf. mirabilis. The triangular lumen of the pharynx in M. cf. mirabilis is surrounded by radial muscle fibers; three sets of pharynx diductors attach to its dorsal side. The unique features of P. cirrifera are one pair of brain muscles and segmentally arranged dorsal transverse muscles, the latter located outside the longitudinal muscles. The transverse lateral muscles are restricted to the sides and lie beneath the longitudinal muscles, a pattern described here for the first time. A true, outer layer of circular fibers is absent in both species of Spionida that were investigated.

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Section: Fig 4 A-dmentioning

confidence: 94%

“…Rouse and Pleijel 2001). Detailed palp morphology and function in Spionida is highly diverse; descriptions are usually restricted to a variety of external patterns including ciliation and various types of papillae (Dauer et al 2003;Worsaae 2003). The palps of M. cf.…”

Section: Fig 4 A-dmentioning

confidence: 99%

Reconstruction of the musculature of Magelona cf. mirabilis (Magelonidae) and Prionospio cirrifera (Spionidae) (Polychaeta, Annelida) by phalloidin labeling and cLSM

et al. 2005

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“…The genus Streblospio includes small tube-dwelling worms (,2 cm) that are distributed in the West (Pearse et al, 1987) and East Atlantic Ocean and the Mediterranean Sea (Sarda & Martin, 1993). They are suspension and surface deposit feeders that live in the upper layer (2 -3 cm) of muddy sediments (Dauer, 1984). Their life spans are shorter than one year (Sarda & Martin, 1993).…”

Section: Introductionmentioning

confidence: 99%

Population changes and reproduction of an alien spionid polychaete, Streblospio gynobranchiata, in shallow waters of the south Caspian Sea

Taheri

Seyfabadi

Behrouz

et al. 2009

Mar. Biodivers. Rec.

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Population changes and reproduction of the alien polychaete, Streblospio gynobranchiata, living in 5, 15 and 30 m depths of the south Caspian Sea (Noor coast) was studied seasonally during 2005. Density and biomass of S. gynobranchiata increased with increasing depth, total organic matter and decreased with sand percentage of the substrate. Maximum density was 10311.11 + 1596.4 ind m 22 and biomass 2320 + 359.19 mg m 22 were observed in 30 m depth in winter. The maximum and minimum densities and biomass were obtained in winter and summer, respectively. Mature females were observed in all seasons, but reproduction peaks were observed in summer and autumn.

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“…Spionid polychaetes use a pair of anterior ciliated tentaclelike appendages called palps to collect food particles from the sediment surface (deposit feeding) or from the water column (suspension feeding). Morphological studies of feeding palps describe several types of cilia including food-groove or frontal cilia, laterofrontal cilia, lateral cilia, and abfrontal cilia (Dauer et al 2003;Lindsay et al 2004). Based on structural characteristics, several investigations have implied sensory functions for some of these cilia (Dauer 1984(Dauer , 1991(Dauer , 1997.…”

Section: Introductionmentioning

confidence: 99%

“…Morphological studies of feeding palps describe several types of cilia including food-groove or frontal cilia, laterofrontal cilia, lateral cilia, and abfrontal cilia (Dauer et al 2003;Lindsay et al 2004). Based on structural characteristics, several investigations have implied sensory functions for some of these cilia (Dauer 1984(Dauer , 1991(Dauer , 1997. Histological and activitydependent cell-labeling studies in D. quadrilobata suggest several types of palp cilia may be chemosensory (Lindsay et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Immunolocalization of a Gαq protein to the chemosensory organs of Dipolydora quadrilobata (Polychaeta: Spionidae)

2008

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Chemoreception in marine invertebrates mediates a variety of ecologically important behaviors including defense, reproduction, larval settlement and recruitment, and feeding. The sensory pathways that regulate deposit-feeding activity by polychaetes living in sedimentary habitats are of particular interest because such feeding has profound effects on the physical and chemical properties of the habitat. Nevertheless, little is known concerning the molecular mechanisms of chemical signal transduction associated with deposit feeding and other behaviors in polychaetes. Chemosensory-based feeding behaviors are typically regulated by G-protein-coupled signal transduction pathways. However, the presence and role of such pathways have not been demonstrated in marine polychaetes. Methodologies involving degenerate primer-based reverse transcription with the polymerase chain reaction and rapid amplification of cDNA ends were used to identify and characterize a Galphaq subunit expressed in the feeding palps of the spionid polychaete Dipolydora quadrilobata. The D. quadrilobata Galphaq protein had high sequence similarity with previously reported Galphaq subunits from both invertebrate and vertebrate taxa. Immunhistochemistry and immunocytochemistry were used with confocal laser scanning microscopy and transmission electron microscopy to visualize the distribution of a Galphaq antibody in whole worms and in cilia of the feeding palps. Galphaq immunoreactivity was concentrated in the nuchal organs, food-groove cilia, and lateral/abfrontal cilia of the feeding palps. Because these structures are known to be involved in chemoreception, we propose that Galphaq isolated from D. quadrilobata is a key component of chemosensory signal transduction pathways in this species.

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Functional morphology and feeding behavior of Streblospio benedicti and S. shrubsolii (Polychaeta: Spionidae)

Cited by 14 publications

References 24 publications

Reconstruction of the musculature of Magelona cf. mirabilis (Magelonidae) and Prionospio cirrifera (Spionidae) (Polychaeta, Annelida) by phalloidin labeling and cLSM

Reconstruction of the musculature of Magelona cf. mirabilis (Magelonidae) and Prionospio cirrifera (Spionidae) (Polychaeta, Annelida) by phalloidin labeling and cLSM

Population changes and reproduction of an alien spionid polychaete, Streblospio gynobranchiata, in shallow waters of the south Caspian Sea

Immunolocalization of a Gαq protein to the chemosensory organs of Dipolydora quadrilobata (Polychaeta: Spionidae)

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