http://lod.bco-dmo.org/id/dataset/638602
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2016-02-16
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Experimental results from the 2nd of 2 studies on prey choice for 2-clawed and 1-clawed Stone Crabs (Menippe spp.) in North Inlet Estuary, Georgetown, SC during 2012 (Variation in Metabolic Processes project)
2018-06-27
publication
2018-06-27
revision
BCO-DMO Linked Data URI
2018-06-27
creation
http://lod.bco-dmo.org/id/dataset/638602
Dr Blaine D. Griffen
University of South Carolina
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Griffen, B. D. (2018) Experimental results from the 2nd of 2 studies on prey choice for 2-clawed and 1-clawed Stone Crabs (Menippe spp.) in North Inlet Estuary, Georgetown, SC during 2012 (Variation in Metabolic Processes project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2018-06-27 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/638602 [access date]
Prey choice for 2-clawed and 1-clawed Stone Crabs (Menippe spp.) Dataset Description: <p>Feeding choices made by stone crabs with either one or two claws.&nbsp;Crabs were collected from North Inlet Estuary, Georgetown, South Carolina.</p>
<p><strong>Related Datasets:</strong><br />
<a href="http://www.bco-dmo.org/dataset/638569">Stone crab: 052012-DietChoiceExp1</a><br />
<a href="http://www.bco-dmo.org/dataset/638622">Stone crab: 052012-LongTermConsumption</a><br />
<a href="http://www.bco-dmo.org/dataset/638645">Stone crab: 062013-PreySizeSelection</a></p> Methods and Sampling: <p>Data was gathered experimentally at the Baruch Institute for Marine &amp; Coastal Sciences. Proportion of the prey items consumed out of total provided (e.g. 1 of 3 mussels; 2 of 3 alternative prey) were used in analysis.&nbsp;</p>
<p>After finding no evidence of prey switching from bivalve prey to any of the previously mentioned diet items as a result of claw loss (see Results), another series of diet choice studies was conducted to assess the selection of various types and sizes of other prey in June 2013. They did this using 2 sequential experiments with a single set of 24 male stone crabs (mean CW ± SD, 81.3 ± 10.6 mm), and examined prey selection before and after removing the larger, crusher claw. Females were not included in these experiments because of low capture rates; however, no differences in consumption between male and female crabs were observed in either diet choice experiment 1 or the long-term consumption experiment. Because the same crabs were used for both experiments, the 2-clawed treatment of each experiment was conducted first (diet choice experiment 2, then prey size selection, as described later), and then the larger, crusher claw was removed fromthe crabs to conduct the 1-clawed treatment of each experiment (diet choice experiment 2, then prey size selection). Between each experimental treatment, crabs were starved for 48 h to standardize hunger. For both experiments, the crabs were housed in the same individual 5-gal buckets, each provided with a separate flow-through seawater source, allowing water temperature and salinity to fluctuate with ambient conditions. At the end of these 2 experiments, the remaining claw was removed from all crabs to assess the qualitative feeding habits of no-clawed crabs (details provided later).</p>
<p>For diet choice experiment 2, the crabs were provided with 3 small ribbed mussels (between 40 mm and 45 mm) and either 3 acorn barnacles (Balanus spp.) or 3 pieces of polychaete worms (Amphitrite ornata) for 48 h during both the 1- and 2-clawed treatments. These prey items were chosen because they are consumed by stone crabs (Powell &amp; Gunter 1968) and are relatively abundant in the oyster reef in North Inlet estuary. For analysis, the results of 2-clawed and 1-clawed trials for each single crab were paired using a multivariate linear mixed-effects model (binomial distribution) with proportion consumed as the response variable; number of claws, prey type, and crab size as predictors; and crab identification number as the random factor to account for repeated measurements.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1129166 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1129166
Funding provided by Slocum-Lunz Foundation () Award Number: Lerner Grey Memorial Fund of the American Museum of Natural History
completed
Dr Blaine D. Griffen
University of South Carolina
801-422-5930
Provo
UT
84602
USA
blaine_griffen@byu.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
claw
crab
date_capture
carap_width
sex
mussel_size
alt_prey_type
alt_prey_size
consumed
theme
None, User defined
treatment
sample identification
date
width
sex
length
No BCO-DMO term
flag
featureType
BCO-DMO Standard Parameters
Griffen_lab
service
Deployment Activity
B. Griffen Lab, University of South Carolina: North Inlet Estuary, Georgetown, SC
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
Linking Variation in Metabolic Processes as a Key to Prediction
https://osprey.bco-dmo.org/project/562104
Linking Variation in Metabolic Processes as a Key to Prediction
<p><em>Description from NSF award abstract:</em><br />
A major goal of biological and ecological sciences is to understand natural systems well enough to predict how species and populations will respond to a rapidly changing world (i.e., climate change, habitat loss, etc.). A population under any conditions will grow, shrink, or disappear altogether depending on how efficiently individuals consume resources (food), utilize that food metabolically, and eventually reproduce. However, making accurate predictions based on these metabolic processes is complicated by the realities that each species has different resource requirements and that no two individuals within a species are exactly alike. Rather, individuals vary and this variation, both within and across species, is central to many ecological and evolutionary processes. Developing the ability to predict responses of biological systems to a changing world therefore requires a mechanistic understanding of variation. The goal of this project is to improve this mechanistic understanding by examining variation within a metabolic context across a range of species that have a spectrum of commonly-seen resource requirements. Further, the work capitalizes on a unique biological characteristic of this group of species that allows control and manipulation of individual reproduction, facilitating experimental study of the mechanistic links between variation in individual consumption, metabolism, and reproduction. The foundation this research is a combination of field measurements and laboratory experiments using both well-established and newly-developed techniques to quantify these links. The result will be a quantitative framework to predict how individuals will respond reproductively to changes in resource use. Because of the close link between individual reproduction and population dynamics, this research will contribute substantially to predictions in population dynamics under realistic conditions where individuals use more than a single resource, and improve the prediction of responses to current and future ecological changes.</p>
<p><strong>The following publications and data resulted from this project:</strong></p>
<p>Belgrad, B. and B. Griffen. 2016. Predator-prey interactions mediated by prey personality and predator identity.<em>Proc. Roy. Soc. B</em>: In Review. [2016-01-20]<br />
<a href="http://www.bco-dmo.org/dataset/635735">P. herbstii mortality data</a>: Mortality of crabs when exposed to either a single blue crab, toadfish, or no predator for a week<br />
<a href="http://www.bco-dmo.org/dataset/635805">P. herbstii personality data</a>: Refuge use of crabs when exposed to predator odor cues from either blue crabs, toadfish, or control of no cue<br />
<a href="http://www.bco-dmo.org/dataset/635833">P. herbstii predator behavior data</a>: Refuge use and mobility of blue crabs and toadfish while in mesocosms for a week - behavior measured during two days.</p>
<p>Belgrad, B. and B. Griffen. 2016. The influence of dietary shifts on fitness of the blue crab, <em>Callinectes sapidus</em>. <em>PloS One. DOI: <a href="http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0145481" target="_blank">10.1371/journal.pone.0145481</a>.</em><br />
<a href="http://www.bco-dmo.org/dataset/630014">Blue crab activity</a>: Activity of crabs fed different diets over a summer<br />
<a href="http://www.bco-dmo.org/dataset/629934">Blue crab egg size</a>: Volume of eggs for crabs fed different diets<br />
<a href="http://www.bco-dmo.org/dataset/629856">Blue crab hepatopancreas index (HSI)</a>: Weight of hepatopancreas for crabs fed different diets<br />
<a href="http://www.bco-dmo.org/dataset/629878">Blue crab hepatopancreas lipid content</a>: Hepatopancreas lipid content of crabs fed different diets<br />
<a href="http://www.bco-dmo.org/dataset/629830">Blue crab reproductive tissue analysis (GSI)</a>: Gonadosomatic index of blue crabs on various diets<br />
<a href="http://www.bco-dmo.org/dataset/629965">Blue crab survival</a>: Blue crab survival data during the dietary study</p>
<p>Knotts ER, Griffen BD. 2016. Individual movement rates are sufficient to determine and maintain dynamic spatial positioning within <em>Uca pugilator</em> herds. <em>Behavioral Ecology and Sociobiology</em> 70:639-646<br />
<a href="http://www.bco-dmo.org/dataset/642465" target="_blank">Uca pugilator: behavior change with carapace marking</a>: Search space behavior due to carapace treatment (control, nail polish, and food dye)<br />
<a href="http://www.bco-dmo.org/dataset/642057" target="_blank">Uca pugilator: field spatial position</a>: Assessment of individual's position within a herd at 3 min. intervals; for proportion of time found at edge of herd<br />
<a href="http://www.bco-dmo.org/dataset/642081" target="_blank">Uca pugilator: herd position proportion</a>: Individual's proportion of time spent in an edge/alone position among a herd<br />
<a href="http://www.bco-dmo.org/dataset/642447" target="_blank">Uca pugilator: search space distribution</a>: Search space that crabs traveled; to evaluate the sample's distribution of exploratory behavior</p>
<p>Belgrad, B. and B. Griffen. 2015. Rhizocephalan infection modifies host food consumption by reducing host activity levels. <em>Journal of Experimental Marine Biology and Ecology</em>. 466: 70-75.<br />
<a href="http://www.bco-dmo.org/dataset/638671">E. depressus digestion time</a> : Time taken for food to pass through gut of flat-backed mud crabs infected by a parasite<br />
<a href="http://www.bco-dmo.org/dataset/638697">E. depressus metabolism</a>: Respiration rate of infected/uninfected flat-backed mud crabs<br />
<a href="http://www.bco-dmo.org/dataset/638726">E. depressus reaction time to prey</a>: Time taken for infected/uninfected flat-backed mud crabs to react to the presence of prey</p>
<p>Blakeslee, A.M., C.L. Keogh, A.E. Fowler, B. Griffen. 2015. Assessing the effects of trematode infection on invasive green crabs in eastern North America. <em>PLOS One</em> 10(6): e0128674.(<a href="http://dmoserv3.bco-dmo.org/data_docs/Variation_Metabolic_Processes/Blakeslee_etal_PlosOne_2015.pdf" target="_blank">pdf</a>)<br />
<a href="http://www.bco-dmo.org/dataset/642488" target="_blank">Carcinus: hemocyte density</a>: Counts of circulating hemocyte density in Carcinus maenas<br />
<a href="http://www.bco-dmo.org/dataset/642804" target="_blank">Carcinus: parasites physiology behavior</a>: Behavior and physiology of Carcinus maenas infected with trematode parasite</p>
<p>Griffen BD, Norelli AP (2015) Spatially variable habitat quality contributes to within-population variation in reproductive success. <em>Ecology and Evolution</em> 5:1474-1483.<br />
<a href="http://www.bco-dmo.org/dataset/648291">P. herbstii diet: sampling site characteristics (Eco-Evo 2015)</a><br />
<a href="http://www.bco-dmo.org/dataset/648300">P. herbstii diet: body measurements (Eco-Evo 2015)</a><br />
<a href="http://www.bco-dmo.org/dataset/648281">P. herbstii diet & reproduction (Eco-Evo 2015)<br />
P. herbstii: collection sites (Ecol-Evol 2015)</a></p>
<p>Griffen BD, Riley ME (2015) Potential impacts of invasive crabs on one life history strategy of native rock crabs in the Gulf of Maine. Biological Invasions 17:2533-2544.<br />
<a href="http://www.bco-dmo.org/dataset/644899">Cancer consumption and reproduction (Bio.Inv. 2015)</a>: Lab experiment linking dietary consumption and reproduction</p>
<p>Griffen BD, Vogel M, Goulding L, Hartman R (2015) Energetic effects of diet choice by invasive Asian shore crabs: implications for persistence when prey are scarce. <em>Marine Ecology Progress Series</em> 522:181-192.<br />
<a href="http://www.bco-dmo.org/dataset/648239">Hemigrapsus diet 1 (MEPS 2015)</a><br />
<a href="http://www.bco-dmo.org/dataset/648272">Hemigrapsus diet 2 (MEPS 2015)</a></p>
<p>Hogan and Griffen (2014). The Dietary And Reproductive Consequences Of Fishery-Related Claw Removal For The Stone Crab <em>Menippe</em> Spp. Journal of Shellfish Research, Vol. 33, No. 3, 795–804.<br />
<a href="http://www.bco-dmo.org/dataset/638569">Stone crab: 052012-DietChoiceExp1</a>: Prey choice for 2-clawed and 1-clawed Stone Crabs (Menippe spp.)<br />
<a href="http://www.bco-dmo.org/dataset/638622">Stone crab: 052012-LongTermConsumption</a>: Long-term consuption for 2-clawed and 1-clawed Stone Crabs (Menippe spp.), summer of 2012<br />
<a href="http://www.bco-dmo.org/dataset/638602">Stone crab: 062013-DietChoiceExp2</a>: Prey choice for 2-clawed and 1-clawed Stone Crabs (Menippe spp.)<br />
<a href="http://www.bco-dmo.org/dataset/638645">Stone crab: 062013-PreySizeSelection</a>: Prey Size selection ranking for 2-clawed and 1-clawed Stone Crabs (Menippe spp.)</p>
<p>Riley M, Johnston CA, Feller IC, and Griffen B. 2014. Range expansion of <em>Aratus pisonii </em>(mangrove tree crab) into novel vegetative habitats. <em>Southeastern Naturalist </em>13(4): 43-38<br />
<a href="http://www.bco-dmo.org/dataset/639205">A. pisonii: range expansion</a>: Aratus pisonii survey in native mangrove and novel salt marsh habitats</p>
<p>Riley M, Vogel M, Griffen B. 2014. Fitness-associated consequences of an omnivorous diet for the mangrove tree crab <em>Aratus pisonii</em>. <em>Aquatic Biology </em>20:35-43, DOI: 10.3354/ab00543<br />
<a href="http://www.bco-dmo.org/dataset/639095">A. pisonii: fitness and diet</a>: Impact of diet variation on physiological and reproductive condition of A. pisonii</p>
<p>Toscano BJ, Newsome B, Griffen BD (2014) Parasite modification of predator functional response. Oecologia 175:345-352b<br />
<a href="http://www.bco-dmo.org/dataset/638907">E. depressus - parasite and feeding (Oecologia, 2014)</a>: Feeding with and without parasitic barnacle infection<br />
<a href="http://www.bco-dmo.org/dataset/638930">E. depressus - parasite and prey handling (Oecologia, 2014)</a>: Food handling with and without parasitic barnacle infection<br />
<a href="http://www.bco-dmo.org/dataset/638956">E. depressus - parasite study - field survey (Oecologia, 2014)</a>: Parasitised field survey</p>
<p>Toscano BJ, Griffen BD (2014) Trait-mediated functional responses: predator behavioural type mediates prey consumption.<em>Journal of Animal Ecology</em> 83:1469-1477<br />
<a href="http://www.bco-dmo.org/dataset/638884">P. herbstii - activity and feeding (JAE, 2014)</a>: Activity level and feeding with and without predator cue</p>
<p>Toscano BJ, Gatto J, Griffen BD (2014) Effects of predation threat on repeatability of individual crab behavior revealed by mark recapture. <em>Behavioral Ecology and Sociobiology</em> 68:519-527<br />
<a href="http://www.bco-dmo.org/dataset/638853">P. herbstii - recapture behavior (BESB, 2014)</a>: Mud crabs refuge use and activity level - initial measurements<br />
<a href="http://www.bco-dmo.org/dataset/638825">P. herbstii - refuge use (BESB, 2014)</a>: Effect of predation threat on repeatability of individual crab behavior revealed by mark-recapture</p>
<p>Griffen BD, Altman I, Bess BM, Hurley J, Penfield A (2012) The role of foraging in the success of invasive species. Biological Invasions. 14:2545-2558<br />
<a href="http://www.bco-dmo.org/dataset/644932">Hemigrapsus seasonal diet (Bio.Inv. 2012)</a>: Percent herbivory and gut fullness for Hemigrapsus sanguineus at different times of year</p>
<p>Griffen BD, Toscano B, Gatto J (2012) The role of intraspecific trait variation in mediating indirect interactions. Ecology 93:1935-1943<br />
<a href="http://www.bco-dmo.org/dataset/644846">P. herbstii refuge use (Ecology, 2012)</a>: Proportion of time that Panopeus herbstii spent using refuge habitats in a lab experiment<br />
<a href="http://www.bco-dmo.org/dataset/644883">P. herbstii: Field personality distribution (Ecology, 2012)</a>: Field distribution of personality types in the mud crab Panopeus herbstii relative to tidal height<br />
<a href="http://www.bco-dmo.org/dataset/644867">P. herbstii: Trait mediated indirect effect (Ecology, 2012)</a>: Influence of refuge use by the mud crab Panopeus herbstii on consumption of bivalves</p>
<p>Riley ME, Griffen BD (2017) Habitat-specific differences alter traditional biogeographic patterns of life history in a climate-change induced range expansion. PLOS One 12(5):e0176263<br />
<a href="http://www.bco-dmo.org/dataset/639282">A. pisonii: egg size</a>: Comparing egg size in Aratus pisonii populations from mangrove and salt marsh habitats<br />
<a href="http://www.bco-dmo.org/dataset/639229">A. pisonii: fecundity</a>: Determining fecundity of Aratus pisonii populations in mangrove and salt marsh habitats<br />
<a href="http://www.bco-dmo.org/dataset/639320">A. pisonii: larval starvation resistance</a>: Comparing larval quality in Aratus pisonii populations from mangrove and salt marsh habitats<br />
<a href="http://www.bco-dmo.org/dataset/639250">A. pisonii: latitudinal body size</a>: Survey examining latitudinal body size patterns in Aratus pisonii<br />
<a href="http://www.bco-dmo.org/dataset/639301">A. pisonii: predation</a>: Comparing predation pressure on Aratus pisonii in mangrove and salt marsh habitats<br />
<a href="http://www.bco-dmo.org/dataset/639267">A. pisonii: reproductive effort</a>: Survey comparing Aratus pisonii reproductive effort in native and novel habitats<br />
<a href="http://www.bco-dmo.org/dataset/639335">A. pisonii: herbivory</a>: Relationship between leaf herbivory, tree characteristics, and refuge availability<br />
<a href="http://www.bco-dmo.org/dataset/639360">A. pisonii: mangrove tree survey</a>: Mangrove tree distribution and characteristics in a dwarf mangrove system</p>
<p>Cannizzo ZJ, Dixon SR & Griffen BD (2018). An anthropogenic habitat within a suboptimal colonized ecosystem provides improved conditions for a range-shifting species. Ecology and Evolution, 8(3):1524-1533.<br />
<a href="https://www.bco-dmo.org/dataset/740014">A. pisonii: behavior</a>: Proportion of time the mangrove tree crab Aratus pisonii spent in different behaviors related to diet and energy storage<br />
<a href="https://www.bco-dmo.org/dataset/740137">A. pisonii: dock-marsh thermal</a>: Thermal readings from under a dock and in a nearby salt marsh<br />
<a href="https://www.bco-dmo.org/dataset/741059">A. pisonii: sun-shade</a>: Proportion of time that mangrove tree crab Aratus pisonii spent in sun and shade in three habitats, 2015-2016.<br />
<a href="https://www.bco-dmo.org/dataset/741032">A. pisonii: thermal picture</a>: Thermal condition of A. pisonii in three habitats: under dock, mangroves, saltmarsh</p>
Variation in Metabolic Processes
largerWorkCitation
project
eng; USA
biota
oceans
B. Griffen Lab, University of South Carolina: North Inlet Estuary, Georgetown, SC
-79.16667
-79.16667
33.3333
33.3333
2013-06-18
2013-07-11
0
BCO-DMO catalogue of parameters from Experimental results from the 2nd of 2 studies on prey choice for 2-clawed and 1-clawed Stone Crabs (Menippe spp.) in North Inlet Estuary, Georgetown, SC during 2012 (Variation in Metabolic Processes project)
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/638613.rdf
Name: claw
Units: unitless
Description: <p>1-Clawed = Y; 2-clawed = N</p>
http://lod.bco-dmo.org/id/dataset-parameter/638614.rdf
Name: crab
Units: unitless
Description: <p>subject number</p>
http://lod.bco-dmo.org/id/dataset-parameter/638615.rdf
Name: date_capture
Units: yyyy-mm-dd
Description: <p>date crab was captured</p>
http://lod.bco-dmo.org/id/dataset-parameter/638616.rdf
Name: carap_width
Units: millimeters
Description: <p>width of crab carapace at widest point</p>
http://lod.bco-dmo.org/id/dataset-parameter/638617.rdf
Name: sex
Units: unitless
Description: <p>male = M; female = F</p>
http://lod.bco-dmo.org/id/dataset-parameter/638618.rdf
Name: mussel_size
Units: millimeters
Description: <p>total length of mussel (Geukensia demissa) provided to crab</p>
http://lod.bco-dmo.org/id/dataset-parameter/638619.rdf
Name: alt_prey_type
Units: millimeters
Description: <p>type of prey other than mussels provided to crab: b = barnacle (Balanus sp); w = polychaete</p>
http://lod.bco-dmo.org/id/dataset-parameter/638620.rdf
Name: alt_prey_size
Units: millimeters
Description: <p>length or diameter of the prey size provided</p>
http://lod.bco-dmo.org/id/dataset-parameter/638621.rdf
Name: consumed
Units: unitless
Description: <p>consumed: N = no; Y = yes</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
20546
https://datadocs.bco-dmo.org/file/VJJWD8Nu5Wn24m/diet_choice2.csv
diet_choice2.csv
Primary data file for dataset ID 638602
download
https://osprey.bco-dmo.org/dataset/638602/data/download
download
onLine
dataset
<p>Data was gathered experimentally at the Baruch Institute for Marine &amp; Coastal Sciences. Proportion of the prey items consumed out of total provided (e.g. 1 of 3 mussels; 2 of 3 alternative prey) were used in analysis.&nbsp;</p>
<p>After finding no evidence of prey switching from bivalve prey to any of the previously mentioned diet items as a result of claw loss (see Results), another series of diet choice studies was conducted to assess the selection of various types and sizes of other prey in June 2013. They did this using 2 sequential experiments with a single set of 24 male stone crabs (mean CW ± SD, 81.3 ± 10.6 mm), and examined prey selection before and after removing the larger, crusher claw. Females were not included in these experiments because of low capture rates; however, no differences in consumption between male and female crabs were observed in either diet choice experiment 1 or the long-term consumption experiment. Because the same crabs were used for both experiments, the 2-clawed treatment of each experiment was conducted first (diet choice experiment 2, then prey size selection, as described later), and then the larger, crusher claw was removed fromthe crabs to conduct the 1-clawed treatment of each experiment (diet choice experiment 2, then prey size selection). Between each experimental treatment, crabs were starved for 48 h to standardize hunger. For both experiments, the crabs were housed in the same individual 5-gal buckets, each provided with a separate flow-through seawater source, allowing water temperature and salinity to fluctuate with ambient conditions. At the end of these 2 experiments, the remaining claw was removed from all crabs to assess the qualitative feeding habits of no-clawed crabs (details provided later).</p>
<p>For diet choice experiment 2, the crabs were provided with 3 small ribbed mussels (between 40 mm and 45 mm) and either 3 acorn barnacles (Balanus spp.) or 3 pieces of polychaete worms (Amphitrite ornata) for 48 h during both the 1- and 2-clawed treatments. These prey items were chosen because they are consumed by stone crabs (Powell &amp; Gunter 1968) and are relatively abundant in the oyster reef in North Inlet estuary. For analysis, the results of 2-clawed and 1-clawed trials for each single crab were paired using a multivariate linear mixed-effects model (binomial distribution) with proportion consumed as the response variable; number of claws, prey type, and crab size as predictors; and crab identification number as the random factor to account for repeated measurements.</p>
Specified by the Principal Investigator(s)
<p>Data has not been processed.</p>
<p><strong>BCO-DMO Processing:</strong><br />
- added conventional header with dataset name, PI name, version date, reference information<br />
- renamed parameters to BCO-DMO standard<br />
- reformatted date from d-Mon-yy to yyyy-mm-dd<br />
- replaced blank cells with nd<br />
- sorted by claw flag and then crab id<br />
- changed date_capture for crab 10 to 2013-06-18 for claw=Y records (some were other dates)<br />
- changed crab number for crab 10 to 25 for those with claw=Y and date_capture on 2013-07-09</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
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pointOfContact
Deployment: Griffen_lab
Griffen_lab
Univ_S_Carolina
laboratory
Griffen_lab
Dr Blaine D. Griffen
University of South Carolina
Univ_S_Carolina
laboratory