Production of Nereis diversicolor O. F. Müller (Polychaeta) in a shallow brackish-water pond

Heip, C.H.R.; Herman, R.

doi:10.1016/0302-3524(79)90047-1

Cited by 52 publications

(32 citation statements)

References 15 publications

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“…The sampling stations in the Mekong estuarine system have salinity within a range of poly-to mesohaline zones, which may explain the high Shanon-Wiener biodiversity index of approximately 1.83 -4. Heip et al (1985) also noted that the relatively low diversity in the sandy sediment at the mouth of the estuary may be explained through high turbulence and periodical re-working of the sediment, a phenomenon that also occurs in the nearby Eastern Scheldt mouth (Heip et al 1979). A decrease of diversity with increasing environmental fluctuations has also been observed by Heip et al (1985) on an intertidal sand-flat.…”

Section: Discussionmentioning

confidence: 85%

Meiobenthos assemblages in the mekong estuarine system with special focus on free-living marine nematodes

Quảng

Vanreusel

Smol³

et al. 2010

Ocean Sci. J.

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Meiobenthos assemblages in eight estuaries of the Mekong river system were investigated in August 2008 (from the Cua Tieu estuary to the Tran De estuary). In each estuary, one sampling station was established for meiobenthos sampling. Twelve major taxa of meiobenthos were recorded in this estuarine system, including Nematoda, and Crustacean Nauplii larvae. The densities of the meiobenthos range from 581 to 3168 inds/10 cm 2 . Nematodes always occupy the highest numbers with a percentage ranging from 64-99%. There are 135 nematode genera recorded in this study with the following as dominant genera Desmodora, Leptolaimus, Halalaimus, Thalassomonhystera, Theristus, Daptonema, Rhynchonema, Parodontophora, and Oncholaimus. Although the biodiversity of the meiobenthos at higher taxa level is not high compared to other marine environments, the estimates of nematode biodiversity at the genus level indicates high values. The increase in number of genera with increasing sampling intensity illustrate that the diversity is underestimated and would have been higher if the authors had considered a larger number of individuals, more replicates per station, and more sampling stations.

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Section: Discussionmentioning

confidence: 85%

Meiobenthos assemblages in the mekong estuarine system with special focus on free-living marine nematodes

Quảng

Vanreusel

Smol³

et al. 2010

Ocean Sci. J.

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“…These additions corresponded to macrofaunal densities of approximately 600 individuals m-' which are within the range of natural abundances (typically 500 to 5000 m-*) for adult N. diversicolor ic.y. Heip & Herman 1979, Vedel & Riisghrd 1993 but represents a high abundance for juvenile A. marina (e.g. Flach & Beukema 1994).…”

Section: Methodsmentioning

confidence: 99%

Effects of two polychaete worms, Nereis diversicolor and Arenicola marina, on aerobic and anaerobic decomposition in a sandy marine sediment

Banta¹,

Holmer²,

Jensen³

et al. 1999

Aquat. Microb. Ecol.

173

141

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The effects of 2 polychaete species, Nereis diversicolor and Arenicola marina, on benthic metabolism and decomposition processes in organic-poor (0.06% POC), sandy sediment were experimentally investigated. Sedvnent O2 uptake and CO2 release were stimulated by 80 to 90% and 260 to 270% for N. diversicolor and A. marina, respect~vely, from basal rates of approximately 30 mm01 m-2 d-'. These enhancements in benthic f l u e s were due to both increased solute exchange due to macrofauna irngation and increases in total benthic metabolism. Although the latter was enhanced by 10 to 35 % and 115 to 123 % by N. diversicolor and A. marina, respectively, both species inhibited anaerobic decomposition as indicated by 66 and 42 % lower sulfate reduction rates. Benthic f l u e s and basal rates of benthic metabolism (without macrofauna) were 2 to 3 times higher in sediments enriched with organic matter compared to unamended sediments. Similarly, sulfate reduction rates were 3 times higher in enriched sedlments. Total benthic metabolism in enriched sediments was stimulated by N. diversicolor to a slrmlar extent (+27 to 34 %) as in unamended sediments, whereas A. marma stimulated total benthic metabolism to a slightly lesser extent (+43 to 55%) in enriched sediments than in unamended sediments. N. diversicolor had little effect on sulfate reduction (-4 %) in enriched sediments, while A. manna reduced sulfate reduction by 85 % in enriched sediments. Porewater profiles reflected the balance between stimulating effects on sediment decomposition processes and removal of porewater solutes by benthic macrofauna. Porewater and sediment profiles of reduced S compounds also showed the effects of these polychaetes on sedimentary S cycling, i.e, lower anaerobic decomposition and increased reoxidation of reduced compounds. Both species affected sediment element cycles, stimulating C cycling and favonng more oxidized species and processes in S cycling. Furthermore, both species affected the fate and distribution of the metabolites produced from decomposition by enhancing the exchange of solutes across the sediment-water interface and porewater flushing. In general, the biogeochemical impact of A. marina was greater than that of N. diversicolor

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“…Les risultats des tres nombreux travaux relatifs au cycle de vie du Nereis diversicolor en differents points de son aire de distribution illustrent la forte variabilite de la duree de vie, du nombre de ginirations et de cohortes, de la taille des adultes prets a se reproduire et de la vitesse de croissance avec les saisons (Dales 195 1;Chambers et Milne 1975;Heip et Herman 1979;Olive et Garwood 198 1 ;Kristensen 1984;Moller 1985;Gillet 1990) et sont revelateurs du degri de plasticiti phinotypique de l'espkce. Pourtant, au plan experimental, seule l'influence des facteurs temperature et salinite sur la croissance du N. diversicolor a it6 analysie.…”

Section: Introductionunclassified

Effets de la ration alimentaire, de la densité intraspécifique et des relations entre individus sur la croissance des juvéniles de l'espèce Nereis diversicolor (Annelida: Polychaeta)

Scaps¹,

Retière²,

Desrosiers³

et al. 1993

Can. J. Zool.

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Requ le 2 1 janvier 1992 Accept6 le 17 septembre 1992 SCAPS, P., RETICRE, C., DESROSIERS, G., et MIRON, G. 1993. Effets de la ration alimentaire, de la densitk intraspkcifique et des relations entre individus sur la croissance des juvkniles de l'espkce Nereis diversicolor (Annelida : Polychaeta). Can. J. Zool. 71 : 424-430.L'klevage, en laboratoire, de juvkniles du Nereis diversicolor sur alimentation a base de Tetramin a permis de quantifier les effets des variations de la quantitk de nourriture, de la densitk intraspkcifique et des relations entre individus sur la croissance. Une ration alimentaire de 3,33 mg d-' de Tetramin par individu assure une croissance optimale de la masse moyenne. Un effet marquk de dkpendance face h la densitk se manifeste non seulement par un ralentissement de la vitesse de croissance mais aussi par une diminution de la biomasse et des taux de survie, pour des valeurs supkrieures h 3000 individus/m2. Le stress provoquk par une manipulation trop frkquente des individus et par le choc thermodiffkrentiel qui en rksulte engendre les memes effets nkgatifs. La variabilitk de la rkponse h l'effet de groupement ou d'isolement est grande puisque des lots de juvkniles prklevks en pkriodes hivernale et printannikre rkagissent diffkremment : alors que la croissance de la masse chez les premiers n'est pas affectke par les conditions d'klevage, celle des seconds est plus importante dans le cas ou les individus sont maintenus isolkment. SCAPS, P., RETICRE, C., DESROSIERS, G., and MIRON, G. 1993. Effets de la ration alimentaire, de la densitk intraspkcifique et des relations entre individus sur la croissance des juvkniles de l'espkce Nereis diversicolor (Annelida : Polychaeta). Can. J. Zool. 71: 424-430. We studied the effects of food intake, intraspecific density, and interactions between individuals on the growth of laboratory-raised juveniles of Nereis diversicolor fed different quantities of Tetramin. A daily intake of 3.33 mg of Tetramin per individual resulted in an optimal mean mass gain. At densities above 3000 individuals/m2, not only was the growth rate reduced, but biomass and survival rates were also diminished. Frequent handling and the thermodifferential shock that ensured created a stress that had the same negative effects. Variations in responses to aggregation or isolation were high, as revealed by groups of juveniles captured in winter or in spring reacting differently: growth was not affected by the breeding conditions in the winter-caught worms but was faster in spring-caught individuals kept in isolation.[Journal translation]

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Production of Nereis diversicolor O. F. Müller (Polychaeta) in a shallow brackish-water pond

Cited by 52 publications

References 15 publications

Meiobenthos assemblages in the mekong estuarine system with special focus on free-living marine nematodes

Meiobenthos assemblages in the mekong estuarine system with special focus on free-living marine nematodes

Effects of two polychaete worms, Nereis diversicolor and Arenicola marina, on aerobic and anaerobic decomposition in a sandy marine sediment

Effets de la ration alimentaire, de la densité intraspécifique et des relations entre individus sur la croissance des juvéniles de l'espèce Nereis diversicolor (Annelida: Polychaeta)

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