Reproductive behaviour ofNereis diversicolor (Annelida: Polychaeta)

Bartels‐Hardege, Helga; Zeeck, E.

doi:10.1007/bf01344320

Cited by 65 publications

(44 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Here, Nereis emergence occurs at the six chaetiger stage, when they are 5-to 6-weeks-old (Dales, 1950), as larvae of this stage were recorded in the surface sediments of the flush and control treatments during the summer. These results are consistent with laboratory observations of emergence from the maternal burrow at this stage, coinciding with the fusion of the first segment to the peristomium, which forms the dorso-posterious tentacular cirri (sensory organs) (Bartels-Hardege & Zeeck, 1990;Marty & Retíere, 1999).The cores were left in situ for a period of 4 weeks at a time and during this period any newly settled larvae may have grown, because in young worms the rate of segment proliferation may be one segment per week (Dales, 1950;Durou et al, 2007). At Bridgemarsh Creek, the data indicate that the smallest chaetigerous larvae remain deep ([3 cm) within the sediment, protected in the parental gallery prior to dispersing at the six chaetiger stage, after which they construct burrows from the surface downwards (Bartels-Hardege & Zeeck, 1990;Davey, 1994).…”

Section: Discussionsupporting

confidence: 93%

“…These results are consistent with laboratory observations of emergence from the maternal burrow at this stage, coinciding with the fusion of the first segment to the peristomium, which forms the dorso-posterious tentacular cirri (sensory organs) (Bartels-Hardege & Zeeck, 1990;Marty & Retíere, 1999).The cores were left in situ for a period of 4 weeks at a time and during this period any newly settled larvae may have grown, because in young worms the rate of segment proliferation may be one segment per week (Dales, 1950;Durou et al, 2007). At Bridgemarsh Creek, the data indicate that the smallest chaetigerous larvae remain deep ([3 cm) within the sediment, protected in the parental gallery prior to dispersing at the six chaetiger stage, after which they construct burrows from the surface downwards (Bartels-Hardege & Zeeck, 1990;Davey, 1994). That the densities of worms in the flush cores were generally lower than, but not significantly different to, those in the control sediments (except during November and December) indicates that in each month almost all of the population undergoes dispersal, and that individual Nereis will disperse several times in their lives.…”

Section: Discussionsupporting

confidence: 93%

“…Instead, it has been described as having a holobenthic life cycle where the fertilised lecithotrophic eggs and developing larvae are brooded for a period of 10-14 days in the maternal burrow after which the female dies a few days later (Dales, 1950;Bartels-Hardege & Zeeck, 1990;Marty & Retiére, 1999). A holobenthic lifecycle may restrict the dispersal potential of a species compared to those with a planktonic stage that can disperse widely (Palmer et al, 1996).…”

Section: Introductionmentioning

confidence: 97%

See 2 more Smart Citations

The dispersal and colonisation behaviour of the marine polychaete Nereis diversicolor (O. F. Müller) in south-east England

2011

View full text Add to dashboard Cite

A 12 month in situ experiment-assessed colonisation behaviour of Nereis diversicolor (Nereis) using cores of defaunated sediment; either raised 5 cm above the mudflat surface (colonisation by swimming only) or flush with it (colonisation by crawling and swimming). Recruitment and dispersal occurred throughout the year but were highest in the summer. During the summer peak dispersal period the densities of worms in the raised cores were about half of those in the flush cores indicating approximately equal levels of dispersal by swimming and crawling. Colonisation of the raised cores, by swimming only, was by Nereis less than 6 cm in length. The length frequencies of worms in the flush treatments were similar to those of the natural population, including worms up to 12 cm in length indicating that larger worms disperse only by crawling. In the spring and summer the abundances of the smallest Nereis in the raised cores were between 60 and 80% of the total abundances in the flush cores, indicating that most small worms had also colonised the flush treatments by swimming. The densities of worms in the flush treatments were lower than, but not significantly different to, the natural population (with the exception of November and December). It is concluded that in most months worms undergo dispersal, mainly by swimming when small, and by crawling thereafter.

show abstract

Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 97%

See 1 more Smart Citation

The dispersal and colonisation behaviour of the marine polychaete Nereis diversicolor (O. F. Müller) in south-east England

2011

View full text Add to dashboard Cite

show abstract

“…This species shows high physiological tolerance of extreme variations in environmental factors, and can grow and reproduce in different sediment types and also in stressed environments (e.g. Bartels-Hardege & Zeeck, 1990;Miron & Kristensen, 1993;Scaps, 2002). It lives in a semipermanent U-or Y-shaped mucus-lined burrow extending 6-12 cm into muddy or sandy-muddy sediments.…”

Section: Introductionmentioning

confidence: 99%

Spatial oxygen heterogeneity in a Hediste diversicolor irrigated burrow

et al. 2011

View full text Add to dashboard Cite

International audienceThe heterogeneity of oxygen distribution in a Hediste diversicolor burrow environment was investigated in a laboratory experiment using a 6-mm thick tank equipped with oxygen planar optodes. The twodimensional oxygen distribution in a complete burrow was monitored every 2 min for 4 h. Oxygen concentrations fluctuated over a scale of minutes in the burrow lumen and wall (up to 2 mm) reflecting the balance between worm ventilation activity and oxygen consumption. The magnitude of the three surrounding micro-horizons (oxic, oscillating and anoxic) induced by the intermittent worm ventilation was spatially and temporally variable within the structure. Oxygen variations appeared to be controlled by distance from the sedimentâwater interface and the direction of water circulation. Moreover, there was an apparent âbuffer effectâ, induced by the proximity to the overlyingwater, which reduced the variations of lumen and wall oxygen in the upper part of the structure. These results highlight the heterogeneous distribution and dynamics of oxygen associated with H. diversicolor burrows and ventilation activity. They also highlight the necessity of integrating this complexity into the current burrow-base models in order to estimate the ecological importance of burrowing species in coastal ecosystems

show abstract

“…In most cases, H. diversicolor undergoes demersal development, with a short dispersive larval stage (Dales 1950;Scaps 2002). However, its life-history characteristics, such as longevity, spawning season, behavior, and growth, vary greatly depending on the location of the population (Dales 1950;Bartels-Hardege and Zeeck 1990;Scaps 2002). H. limnicola (Johnson 1903), which inhabits brackish and fresh water along the Pacific coast of North America, is a viviparous, self-fertilizing hermaphrodite (Fong and Pearse 1992).…”

Section: Introductionmentioning

confidence: 99%