Sediment-associated cues for larval settlement of the infaunal spionid polychaetes Polydora cornuta and Streblospio benedicti

Sebesvári, Zita; Esser, Ferdinand; Harder, Tilmann

doi:10.1016/j.jembe.2006.06.007

Cited by 20 publications

(18 citation statements)

References 65 publications

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“…This observation aligns with prior studies, which demonstrated rejection of "burnt" and defaunated sand by juvenile M. liliana (e.g., Cummings et al, 1993;Lundquist et al, 2004). The small difference in the particle size distribution between depleted and intertidal sediment may have contributed to this result but many other potential causes exist, e.g., lack of cues indicating the presence of suitable food (Nilsson et al, 2000;Stocks and Grassle, 2001), microorganisms (Sebesvari et al, 2006), microbial biofilms (Keough et al, 1995, Van Colen et al, 2009 or other fauna (Woodin, 1985;Woodin et al, 1993;Cummings et al, 1996;Olivier et al, 1996;Dahms et al, 2004).…”

Section: Behavioural Responsesupporting

confidence: 90%

Thin terrestrial sediment deposits on intertidal sandflats: effects on pore-water solutes and juvenile bivalve burial behaviour

2014

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Abstract. Nearshore zones experience increased sedimentation due to coastal development and enhanced loads of fine terrestrial sediment (hereafter, TS) in river waters. Deposition of TS can alter seabed biogeochemical processes but the effects on benthic ecosystem functioning are unknown. The results of a past experiment with defaunated, intertidal sediment suggest that a decrease in the oxygenation of this sediment by a thin (mm) TS deposit causes substrate rejection (refusal to bury) by post-settlement juvenile recruits of the tellinid bivalve Macomona liliana. We further examined this behaviour, asking if such deposits negatively affect burial when applied to intertidal sediment that is oxygenated by bioturbation (C) or depleted of dead and living organic matter (D). We observed recruits on the surface of four treatments: C, D, and the same sediments to which we added a 1.7-1.9 mm layer of TS (CTS, DTS). The TS deposit decreased the oxygenation and the pH of the underlying intertidal sediment (CTS) confirming previous results, but significantly increased but not decreased the probability of burial, irrespectively of treatment. Juveniles more likely buried into C than into D. The mechanism that caused previously observed substrate rejection by post-settlement juvenile M. liliana remains unclear but our results suggest that contact of the recruits with the TS deposit does not cause substrate rejection. We now hypothesise that conditioning of sediment by bioturbation can mediate negative effects of TS deposits on the recruits' burial behaviour.

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Section: Behavioural Responsesupporting

confidence: 90%

Thin terrestrial sediment deposits on intertidal sandflats: effects on pore-water solutes and juvenile bivalve burial behaviour

2014

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“…It is uncertain whether dredging caused the observed loss of fine sediments, and past studies have found no effect of pump-scoop dredging on sediment composition in Poole (McIlquham, unpubl.). Longterm or chronic fishing can nonetheless cause permanent shifts in habitat characteristics and community structure (Pauly, 1995;Handley et al, 2014), with implications for settlement and recruitment patterns (Wilson, 1990;Pinedo et al, 2000;Sebesvari et al, 2006). No significant change in sediment composition was evident at the site where settlement appeared the greatest however.…”

Section: Discussionmentioning

confidence: 99%

Impacts of a novel shellfishing gear on macrobenthos in a marine protected area: pump-scoop dredging in Poole Harbour, UK

Clarke

Esteves

Stillman

et al. 2017

Aquat. Living Resour.

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-Understanding the impact of bottom-fishing gears at various scales and intensities on habitats and species is necessary to inform management. In Poole Harbour, UK, a multiple use marine protected area, fishermen utilise a unique "pump-scoop" dredge to harvest the introduced Manila clam Ruditapes philippinarum. Managers need to balance the socio-economic benefits of the fishery with ecological concerns across the region, which has required a revision of by-laws that include both spatial and temporal measures. Within an operational fishery, we used a Before-After-Control-Impact sampling design to assess the impacts of pump-scoop dredging on benthic physical characteristics and community structure in an area where there was no dredging, an area newly opened to dredging and an area subject to high levels of historic dredging. A sampling grid was used in each area to best capture any fishing effort in the newly opened area. Core samples were taken to a depth of 30 cm within intertidal mudflats. A significant loss of fine sediments was observed in the site subject to high intensity dredging and a significant change in community structure also occurred in both dredged sites throughout the study period. In the newly opened site this was characterised by a relative increase in species richness, including increased abundance of annelid worms, notably Hediste diversicolor and Aphelochaeta marioni and a decline in the abundance of the bivalve mollusc Abra tenuis. These changes, albeit relatively small, are attributed to physical disturbance as a direct result of pump-scoop dredging, although no difference in the classification of the biotope of the site was observed. This is of particular interest to managers monitoring site condition within areas under the new bylaws as the Manila clam is spreading to other protected estuaries in the region.

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“…While sponge sediments may be colonized by chance, there can be chemical cues that encourage settlement of planktonic larvae (Sebesvari et al 2006;Hung et al 2009). A continuous succession of community assemblages may be dependent on the initial colonizers, which can inhibit the following recruits.…”

Section: Discussionmentioning

confidence: 99%

Polychaete fauna inhabiting sediments associated with the stinking vase sponge (Ircinia campana Lamarck, 1814), St. John, United States Virgin Islands

Prentiss

Harris

2011

Italian Journal of Zoology

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As part of a general polychaete survey of St. John, United States Virgin Islands, an analysis was conducted on macrofaunal polychaete assemblages found in sediments trapped within the stinking vase sponge (Iricinia campana Lamarck, 1814) growing in shallow water at less than 4 m depth. Higher species numbers and greater abundances were found within the sponges than in adjacent sand. Polychaetes comprised over 90% of all macrofauna found in the two habitats, with 41 species within 21 families: Acoetidae, Amphinomidae, Capitellidae, Chrysopetalidae, Cirratulidae, Dorvilleidae, Eunicidae, Euphrosinidae, Glyceridae, Hesionidae, Maldanidae, Nereididae, Oenonidae, Orbiniidae, Opheliidae, Sabellidae, Sigalionidae, Spionidae, Syllidae, Terebellidae, and Trichobranchidae. Univariate statistics, community ordination (nonmetric multidimensional scaling) and a multiple response permutation procedure revealed differences in assemblage compositions between vase sponge sediments and open sand. Seven polychaete species found in vase sponges were not found in any other habitats in the survey area. Vase sponges appear to be population refugia for many soft-bottom polychaete species scarcely found or absent in adjacent reef habitats, by supplying protection from predators and currents, finer and more organically enriched sediments within the concavities, and food derived from the sponges.

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Sediment-associated cues for larval settlement of the infaunal spionid polychaetes Polydora cornuta and Streblospio benedicti

Cited by 20 publications

References 65 publications

Thin terrestrial sediment deposits on intertidal sandflats: effects on pore-water solutes and juvenile bivalve burial behaviour

Thin terrestrial sediment deposits on intertidal sandflats: effects on pore-water solutes and juvenile bivalve burial behaviour

Impacts of a novel shellfishing gear on macrobenthos in a marine protected area: pump-scoop dredging in Poole Harbour, UK

Polychaete fauna inhabiting sediments associated with the stinking vase sponge (Ircinia campana Lamarck, 1814), St. John, United States Virgin Islands

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