Nocturnal Swimming of Scolecolepides viridis (Polychaeta: Spionidae)

Dauer, Daniel M.; Ewing, R. Michael; Tourtellotte, G.H.; Barker, H. Russell

doi:10.2307/1351559

Cited by 30 publications

(14 citation statements)

References 5 publications

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“…Down estuary swimming of adult M. viridis prior to spawning was reported by OAUER et aL(1980). This phenomenom is important because normal development of eggs and larvae is not possible at salinities below 5%~ Swimming in polychaetes as a means of dispersal is known for several species (e.g.…”

Section: Distribution Patternmentioning

confidence: 99%

Distribution and life cycle of the North American Spionid polychaeteMarenzelleria viridis (Verrill, 1873) in the Ems estuary

Essink

Kleef

1993

Netherlands Journal of Aquatic Ecology

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In 1983 the first specimens of the North American spionid polychaete Marenzelleria viridis were found along the European mainland shore in the Ems estuary. Since then, this polychaete has spread over several estuaries around the North Sea and the Baltic. In the inner part of the Ems estuary juveniles were predominantly present in muddy sediments high in the intertidal zone; in more sandy sediments at higher salinities juveniles and adults co-occured. Detailed information was obtained at a muddy and at a sandy station.Gametes were present in the coelomic fluid from November through March. In May new recruits were found in the sediment samples, reaching densities of over 105 m -2 at the muddy station, and c. 2000 m -2 at the sandy station. During summer, densities decreased at the muddy station, coinciding with a density increase at the sandy station, suggesting migration of juveniles from a nursery to the adult habitat. Cage experiments showed that the decrease of juveniles at the muddy station could be attributed to migration and not to mortality due to predation.At the sandy habitat palps and anterior parts of M. viridis made up 4-11% of the stomach content of juvenile plaice (Pleuronectes platessa). In juvenile flounder (Platichthys flesus) only in April c. 10% of the stomach content consisted of M. viridis. During 1983During -1990 increasing densities of M. viridis at the sandy habitat coincided with a reduced abundance of Nereis diversicolor, however, this inverse relationship was not found to be statistically significant. Density fluctuations of M. viridis and Corophiurn volutator showed a significant positive relationship, the cause of which is not yet understood.

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Section: Distribution Patternmentioning

confidence: 99%

Distribution and life cycle of the North American Spionid polychaeteMarenzelleria viridis (Verrill, 1873) in the Ems estuary

Essink

Kleef

1993

Netherlands Journal of Aquatic Ecology

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“…Sometimes several million larvae per cubic metre were found (Bochert 1997). Juvenile worms also have been found in the plankton (George 1966, Dauer et al 1980, Bochert & Bick 1995. Accordingly, place of reproduction and place of benthic life of the adults examined in the present paper do not necessarily have to be identical.…”

Section: Genetic and Ecological Diversitymentioning

confidence: 74%

Effect of salinity on spatial distribution and cell volume regulation in two sibling species of Marenzelleria (Polychaeta: Spionidae)

Blank¹,

Bastrop²,

Röhner³

et al. 2004

Mar. Ecol. Prog. Ser.

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Marenzelleria sibling species Types I and II are characteristically distributed within the salinity gradient of the Elbe estuary. For the first time F 1 -hybrids between the 2 Marenzelleria species were found. Type I inhabits mainly the isoosmotic/hyperosmotic range, while Type II and the F 1 -hybrids prevail in the hypoosmotic range. A sympatric occurrence could be inferred in salinity ranges from 3.3 to 12.3 ppt. Marenzelleria sibling species Type II has been found for the first time in the North Sea (Elbe estuary). The influence of salinity on the distribution of Marenzelleria spp. was examined by laboratory experiments. In a time-course experiment with salinity changes from 10 to 25 ppt and from 25 to 10 ppt, respectively, enzyme activities and free amino acids were determined. The activities of alanine aminotransferase, aspartate aminotransferase, and glutamate dehydrogenase were always higher in Type I than in Type II. A salinity increase from 10 to 25 ppt resulted in a faster increase of the concentrations of D,L-alanine, glycine, serine, glutamate and threonine in Type I. The biochemical results showed that the capacity of cell volume regulation could be involved in the different spatial distributions of the 2 sibling species.

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“…B. sarsi is nocturnal (Sarvala, 1971), and M. cf. viridis is probably nocturnal in the Baltic Sea during autumnal reproductive swimming (Dauer et al, 1980;Zettler et al, 1995). In the aquaria, some amphipods could have been eaten if they moved along the sediment surface during the light period.…”

Section: Predation and Preymentioning

confidence: 99%

Daily activity pattern of the sand goby, Pomatoschistus minutus (Pisces), at low light intensity

Ehrenberg

Ejdung

2008

Hydrobiologia

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In autumn and winter, the sand goby (Pomatoschistus minutus) in the Baltic Sea is to a large extent found on soft bottoms deeper than the summer thermocline. Although P. minutus are numerous during a large part of the year in these areas, most studies on this species have been performed on very shallow bottoms. Here we study the activity of P. minutus in autumn using video recordings in the laboratory, under light (1.5-2 lux) and temperature conditions prevailing at ca. 30 m depth. We propose that the results can be used to evaluate in situ abundance censuses. P. minutus had the same nocturnal activity pattern in low light intensity as described for light intensities found in shallow water. The fish swim significantly more in darkness than in light, and bury in the sediment mainly at day. These behaviours, recorded in the absence of predators, are suggested to be adaptations to avoid predators.

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Nocturnal Swimming of Scolecolepides viridis (Polychaeta: Spionidae)

Cited by 30 publications

References 5 publications

Distribution and life cycle of the North American Spionid polychaeteMarenzelleria viridis (Verrill, 1873) in the Ems estuary

Distribution and life cycle of the North American Spionid polychaeteMarenzelleria viridis (Verrill, 1873) in the Ems estuary

Effect of salinity on spatial distribution and cell volume regulation in two sibling species of Marenzelleria (Polychaeta: Spionidae)

Daily activity pattern of the sand goby, Pomatoschistus minutus (Pisces), at low light intensity

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