Sediment choice by settling larvae of the bivalve, Spisula solidissima (Dillwyn), in flow and still water

Snelgrove, Paul V. R.; Grassle, J. Frederick; Butman, Cheryl Ann

doi:10.1016/s0022-0981(98)00048-3

Cited by 49 publications

(18 citation statements)

References 30 publications

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“…To date, these concepts are supported by a wide variety of organisms that include crabs (Stevens 2003), sea anemones (Sebens 1982), mussels (Petersen 1984), gastropods (Stoner et al 1996), limpets (McGee & Targett 1989 and clams (Snelgrove et al 1998). The same line of reasoning is supported by the present study, where Capitella sp.…”

Section: Juvenile Performancesupporting

confidence: 78%

Spatio-temporal variation in sediment biochemistry alters larval habitat selection and juvenile performance in the polychaete Capitella sp. I

Thiyagarajan¹,

Soo²,

Shin³

et al. 2006

Mar. Ecol. Prog. Ser.

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The aim of the present study was to understand how larvae and juveniles of the opportunistic polychaete Capitella sp. I respond to natural sediments with varying biochemical properties. Muddy sediments of a similar particle size spectrum were collected from 5 sites in Hong Kong along a pollution gradient of domestic sewage on 4 sampling occasions in both wet and dry seasons. The sediments were used to study the influence of organic matter quantity and composition (i.e. total organic carbon [TOC], total nitrogen [TN], chlorophyll a, biopolymeric carbon and enzymatically hydrolysable amino acid contents) on larval metamorphosis (i.e. habitat selection) and juvenile performance (i.e. growth and survivorship). Organic matter quantity and composition varied with sampling date and site. Still water multiple-choice experiments showed that larval choice at settlement varied with spatial and temporal variations in sediment biochemical properties. A series of experiments in the study also showed that both the quantity and the composition of organic matter affect the attractiveness of substrates to larvae and appear to play a key role in determining larval behavior at the time of settlement. Further laboratory experiments showed that larvae did not choose to settle on sediments from sites where juvenile growth was poor and mortality was higher. Our field data indicated that both larval metamorphosis and juvenile performance patterns observed in this laboratory study partially corroborate data on the abundance of adult Capitella spp. in the field. Overall, this study suggests that the field distribution of Capitella sp. I, and consequently species composition in a community, could be determined by the habitat selection by larvae and early juvenile performance. KEY WORDS: Capitella sp. I · Larval metamorphosis · Sediment organic matter · Juvenile growth · SurvivalResale or republication not permitted without written consent of the publisher

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Section: Juvenile Performancesupporting

confidence: 78%

Spatio-temporal variation in sediment biochemistry alters larval habitat selection and juvenile performance in the polychaete Capitella sp. I

Thiyagarajan¹,

Soo²,

Shin³

et al. 2006

Mar. Ecol. Prog. Ser.

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“…The link between larval habitat selection and the distribution of recruits and adults in the field has been demonstrated in several studies (e.g. Muus 1973, Snelgrove et al 1998). However, given that the densities of adult Anadara trapezia in vegetated habitats sampled in this study follow similar patterns to those observed for recruits (i.e.…”

Section: Discussionmentioning

confidence: 90%

Invasive seaweed enhances recruitment of a native bivalve: roles of refuge from predation and the habitat choice of recruits

Gribben¹,

Wright²

2006

Mar. Ecol. Prog. Ser.

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Invasive species may have a range of negative effects on native species in the region invaded. The invasive green alga Caulerpa taxifolia has invaded several temperate regions worldwide and now occurs in 9 estuaries in temperate eastern Australia. Despite the threat posed by C. taxifolia, virtually nothing is known of its effects on native estuarine infauna. In the present study, we investigated the distribution and abundance, habitat choice and predation of recruits (post-set juveniles) of the native Sydney cockle Anadara trapezia at 2 sites invaded by C. taxifolia in Lake Conjola, New South Wales, Australia. Recruitment of A. trapezia was significantly higher in C. taxifolia (both with sparse [30%] and with dense [100%] cover) than in Zostera capricorni and bare sediment. Up to 680 recruits m -2 were observed in C. taxifolia, with the highest recruit densities occurring at intermediate C. taxifolia densities. However, in habitat choice experiments, recruits showed no preference for C. taxifolia over the seagrasses Z. capricorni and Halophila ovalis, but a strong preference for adult A. trapezia over all macrophytes when A. trapezia were included as treatments in experiments. Field data showed that adult A. trapezia in bare sediments had very few recruits attached to them (< 0.07 recruits adult -1 ) compared to adults found within C. taxifolia (0.95 ± 0.25 and 1.23 ± 0.31 recruits adult -1 at the 2 sites). Given that recruits displayed a strong preference for adults, but were rare on adults living in bare sediments, we tested whether C. taxifolia provided a refuge from predation. Recruits on adults placed into a bare sediment habitat were all consumed by predatory fish within 15 min, whereas none of the recruits on adults in an adjacent C. taxifolia habitat were eaten. Our results show that recruits do not reject C. taxifolia as a recruitment substratum despite showing preference for adult conspecifics, and that C. taxifolia may, by providing recruits with a refuge from predation enhance the recruitment of A. trapezia compared to uninvaded sediment. Although the long-term consequences of this enhanced recruitment are unknown, our study demonstrates that, contrary to commonly held views, the effects of C. taxifolia are not always negative.

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“…[Phi units are calculated as follows: ϭ Ϫlog 2 (S); where S is the grain size in millimeters.] Furthermore, station 9 consists of approximately 99.5% sand, with 0.5% silt-clay (20). Station C contains medium to fine sand, with a mean sediment grain size of 1.8 phi units.…”

Section: Methodsmentioning

confidence: 99%

Horizontal Heterogeneity of Denitrifying Bacterial Communities in Marine Sediments by Terminal Restriction Fragment Length Polymorphism Analysis

Scala

Kerkhof

2000

Appl Environ Microbiol

155

113

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Although it is widely believed that horizontal patchiness exists in microbial sediment communities, determining the extent of variability or the particular members of the bacterial community which account for the observed differences among sites at various scales has not been routinely demonstrated. In this study, horizontal heterogeneity was examined in time and space for denitrifying bacteria in continental shelf sediments off Tuckerton, N.J., at the Rutgers University Long-Term Ecosystem Observatory (LEO-15). Characterization of the denitrifying community was done using PCR amplification of the nitrous oxide reductase (nosZ) gene combined with terminal restriction fragment length polymorphism analysis. Spatial scales from centimeters to kilometers were examined, while temporal variation was assayed over the course of 1995 to 1996.

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Sediment choice by settling larvae of the bivalve, Spisula solidissima (Dillwyn), in flow and still water

Cited by 49 publications

References 30 publications

Spatio-temporal variation in sediment biochemistry alters larval habitat selection and juvenile performance in the polychaete Capitella sp. I

Spatio-temporal variation in sediment biochemistry alters larval habitat selection and juvenile performance in the polychaete Capitella sp. I

Invasive seaweed enhances recruitment of a native bivalve: roles of refuge from predation and the habitat choice of recruits

Horizontal Heterogeneity of Denitrifying Bacterial Communities in Marine Sediments by Terminal Restriction Fragment Length Polymorphism Analysis

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