Data from: The density and spatial arrangement of the invasive oyster Crassostrea gigas determines its impact on settlement of native oyster larvae ...
Understanding how the density and spatial arrangement of invaders is critical to developing management strategies of pest species. The Pacific oyster, Crassostrea gigas, has been translocated around the world for aquaculture and in many instances has established wild populations. Relative to other s...
| Main Authors: | , , |
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| Format: | Dataset |
| Language: | English |
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Dryad
2014
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.v7m3q https://datadryad.org/stash/dataset/doi:10.5061/dryad.v7m3q |
| Summary: | Understanding how the density and spatial arrangement of invaders is critical to developing management strategies of pest species. The Pacific oyster, Crassostrea gigas, has been translocated around the world for aquaculture and in many instances has established wild populations. Relative to other species of bivalve, it displays rapid suspension feeding, which may cause mortality of pelagic invertebrate larvae. We compared the effect on settlement of Sydney rock oyster, Saccostrea glomerata, larvae of manipulating the spatial arrangement and density of native S. glomerata, and non-native C. gigas. We hypothesized that while manipulations of dead oysters would reveal the same positive relationship between attachment surface area and S. glomerata settlement between the two species, manipulations of live oysters would reveal differing density-dependent effects between the native and non-native oyster. In the field, whether oysters were live or dead, more larvae settled on C. gigas than S. glomerata when ... : Fig.2. Oyster larval settlement rates on adult oysters in an open estuary, field experiment.Data collected in the field, in an experiment established in an estuary. Excel software was used to create the data file. A)Monospecific Bags: data represent the rate of larval settlement on 9 of each adult oyster: conspecific Sydney rock oysters and native Pacific oysters, deployed in single-species mesh bags. Status indicates oysters that were deployed live or dead. B) Mixed basket: 20 of each Sydney rock oyster and Pacific, live and dead (total 80 oysters) were deployed in one basket. Summary indicates means and standard errors of the means of raw data.Fig.2.xlsxFig.3. Larval settlement rates in response to densities of adult oyster substrate.Data collected in a controlled laboratory experiment, in 8 L replicate buckets. Excel software used to create the data. The number of Sydney rock oyster larvae settled per adult oyster is recorded. Adult oysters used as substrate were either A) Live or B) Dead. Two species of ... |
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