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    Uca pugilator: Assessment of individual's position within a herd at 3 min. intervals analyzed at USC in 2014 (Variation in Metabolic Processes project)
    
  
  
    
    

Uca pugilator: Assessment of individual's position within a herd at 3 min. intervals analyzed at USC in 2014 (Variation in Metabolic Processes project)

Website: https://www.bco-dmo.org/dataset/642057
Data Type: experimental
Version:
Version Date: 2016-04-08

Project
» Linking Variation in Metabolic Processes as a Key to Prediction (Variation in Metabolic Processes)
ContributorsAffiliationRole
Griffen, Blaine D.University of South CarolinaPrincipal Investigator
Knotts, Eilea R.University of South CarolinaStudent, Contact
Copley, NancyWoods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager


Coverage

Spatial Extent: Lat:33.32689722 Lon:-79.2066
Temporal Extent: 2014-07-08 - 2014-08-10

Dataset Description

Sub-project: "Individual personality is sufficient to determine and maintain dynamic spatial positioning within Uca pugilator herds."

Related Reference: Knotts ER, Griffen BD (2016) Individual movement rates are sufficient to determine and maintain dynamic spatial positioning within Uca pugilator herds. Behavioral Ecology and Sociobiology 70:639-646

Related Datasets:
Uca pugilator: behavior change with carapace marking
Uca pugilator: herd position proportion
Uca pugilator: search space distribution


Acquisition Description

U. pugilator (those with the daily upper and lower extremes of searching space as measured above) were returned to the field within 24 hours of the first interactions during low tide, and were released into pre-existing herds of conspecifics that were foraging on the exposed mudflats at North Inlet Estuary (33°19’36.83”N, 79°12’23.76”W) in Georgetown, South Carolina, USA.

All individuals on a given day were released back onto the mudflat at the same moment by placing them all under a single cover and then raising this cover up remotely. After disturbing the herds during initial setup, we remained motionless until fiddler crabs within the herd resumed their feeding behavior prior to lifting the cover to release the marked crabs. The number of released crabs in one session ranged from four to six fiddler crabs. Following release, we assessed the location of each marked crab within the herd (edge vs. center) every three minutes by observing the crabs from a close proximity (though from a sufficient distance so as not to disturb the herd) using binoculars. An individual was tracked using its sex and carapace color as indicators for specific crab identification. The location assessment of the marked crab was characterized by the individual’s position (edge vs. center) within the herd. These observations took place every three minutes for one hour or until all marked U. pugilator were lost from sight (38.71 min ± 9.39 min, mean ± SD).


Processing Description

Analyses were conducted with the statistical program R, v.3.1.0. We analyzed the data using a generalized linear model with the proportion of observations for each crab where it was observed on the edge of a herd as the response variable, and with the following fixed factors: personality type, carapace width, and gender, and with the number of observations made during the field session as a weighting factor.  We initially included collection date as a random blocking factor; however, this term had no effect on model results (determined using AIC) and so data were pooled across all sampling dates.

BCO-DMO Processing:
- added conventional header with dataset name, PI name, version date, reference information
- renamed parameters to BCO-DMO standard
- reformated date from m/d/yyyy to yyyy-mm-dd
- added site, lat, lon columns for mapping purposes


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Parameters

ParameterDescriptionUnits
sitesampling location unitless
latlatitude; north is positive decimal degrees
lonlongitude; east is positive decimal degrees
personalityPersonality unitless
crabcrab unitless
dateDate yyyy-mm-dd
timeTime (GMT) HH:MM
sexGender unitless
carap_widthCarapace Width mm
searchSearch Space: The number of quadrats entered by the crab's full body with allowance for re-entry in an aquarium [55x30x35cm] in which eight equal size quadrats (area ~206cm2) were marked integer
time_elapsedThe number of minutes passed after the initial release of U. pugilator into the field minutes
positionThe observed position of the individual crab after each specific time interval. The"0" represents a central position or that the individual was hiding. The "1" represents an edge position or that the individual was alone. The "nd" represents that the individual was lost from sight. unitless


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Instruments

Dataset-specific Instrument Name
Generic Instrument Name
Binoculars, Handheld
Generic Instrument Description
Handheld binoculars, generally used for bird observations.


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Deployments

Griffen_2014

Website
Platform
Univ_S_Carolina
Start Date
2014-05-31
End Date
2014-10-25
Description
Blue crab studies


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Project Information

Linking Variation in Metabolic Processes as a Key to Prediction (Variation in Metabolic Processes)


Description from NSF award abstract: 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. The following publications and data resulted from this project: Belgrad, B. and B. Griffen. 2016. Predator-prey interactions mediated by prey personality and predator identity.Proc. Roy. Soc. B: In Review. [2016-01-20]P. herbstii mortality data: Mortality of crabs when exposed to either a single blue crab, toadfish, or no predator for a weekP. herbstii personality data: Refuge use of crabs when exposed to predator odor cues from either blue crabs, toadfish, or control of no cueP. herbstii predator behavior data: Refuge use and mobility of blue crabs and toadfish while in mesocosms for a week - behavior measured during two days. Belgrad, B. and B. Griffen. 2016. The influence of dietary shifts on fitness of the blue crab, Callinectes sapidus. PloS One. DOI: 10.1371/journal.pone.0145481.Blue crab activity: Activity of crabs fed different diets over a summerBlue crab egg size: Volume of eggs for crabs fed different dietsBlue crab hepatopancreas index (HSI): Weight of hepatopancreas for crabs fed different dietsBlue crab hepatopancreas lipid content: Hepatopancreas lipid content of crabs fed different dietsBlue crab reproductive tissue analysis (GSI): Gonadosomatic index of blue crabs on various dietsBlue crab survival: Blue crab survival data during the dietary study Knotts ER, Griffen BD. 2016. Individual movement rates are sufficient to determine and maintain dynamic spatial positioning within Uca pugilator herds. Behavioral Ecology and Sociobiology 70:639-646Uca pugilator: behavior change with carapace marking: Search space behavior due to carapace treatment (control, nail polish, and food dye)Uca pugilator: field spatial position: Assessment of individual's position within a herd at 3 min. intervals; for proportion of time found at edge of herdUca pugilator: herd position proportion: Individual's proportion of time spent in an edge/alone position among a herdUca pugilator: search space distribution: Search space that crabs traveled; to evaluate the sample's distribution of exploratory behavior Belgrad, B. and B. Griffen. 2015. Rhizocephalan infection modifies host food consumption by reducing host activity levels. Journal of Experimental Marine Biology and Ecology. 466: 70-75.E. depressus digestion time : Time taken for food to pass through gut of flat-backed mud crabs infected by a parasiteE. depressus metabolism: Respiration rate of infected/uninfected flat-backed mud crabsE. depressus reaction time to prey: Time taken for infected/uninfected flat-backed mud crabs to react to the presence of prey 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. PLOS One 10(6): e0128674.(pdf)Carcinus: hemocyte density: Counts of circulating hemocyte density in Carcinus maenasCarcinus: parasites physiology behavior: Behavior and physiology of Carcinus maenas infected with trematode parasite Griffen BD, Norelli AP (2015) Spatially variable habitat quality contributes to within-population variation in reproductive success. Ecology and Evolution 5:1474-1483.P. herbstii diet: sampling site characteristics (Eco-Evo 2015)P. herbstii diet: body measurements (Eco-Evo 2015)P. herbstii diet & reproduction (Eco-Evo 2015) P. herbstii: collection sites (Ecol-Evol 2015) 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.Cancer consumption and reproduction (Bio.Inv. 2015): Lab experiment linking dietary consumption and reproduction 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. Marine Ecology Progress Series 522:181-192.Hemigrapsus diet 1 (MEPS 2015)Hemigrapsus diet 2 (MEPS 2015) Hogan and Griffen (2014). The Dietary And Reproductive Consequences Of Fishery-Related Claw Removal For The Stone Crab Menippe Spp. Journal of Shellfish Research, Vol. 33, No. 3, 795–804.Stone crab: 052012-DietChoiceExp1: Prey choice for 2-clawed and 1-clawed Stone Crabs (Menippe spp.)Stone crab: 052012-LongTermConsumption: Long-term consuption for 2-clawed and 1-clawed Stone Crabs (Menippe spp.), summer of 2012Stone crab: 062013-DietChoiceExp2: Prey choice for 2-clawed and 1-clawed Stone Crabs (Menippe spp.)Stone crab: 062013-PreySizeSelection: Prey Size selection ranking for 2-clawed and 1-clawed Stone Crabs (Menippe spp.) Riley M, Johnston CA, Feller IC, and Griffen B. 2014. Range expansion of Aratus pisonii (mangrove tree crab) into novel vegetative habitats. Southeastern Naturalist 13(4): 43-38A. pisonii: range expansion: Aratus pisonii survey in native mangrove and novel salt marsh habitats Riley M, Vogel M, Griffen B. 2014. Fitness-associated consequences of an omnivorous diet for the mangrove tree crab Aratus pisonii. Aquatic Biology 20:35-43, DOI: 10.3354/ab00543A. pisonii: fitness and diet: Impact of diet variation on physiological and reproductive condition of A. pisonii Toscano BJ, Newsome B, Griffen BD (2014) Parasite modification of predator functional response. Oecologia 175:345-352bE. depressus - parasite and feeding (Oecologia, 2014): Feeding with and without parasitic barnacle infectionE. depressus - parasite and prey handling (Oecologia, 2014): Food handling with and without parasitic barnacle infectionE. depressus - parasite study - field survey (Oecologia, 2014): Parasitised field survey Toscano BJ, Griffen BD (2014) Trait-mediated functional responses: predator behavioural type mediates prey consumption.Journal of Animal Ecology 83:1469-1477P. herbstii - activity and feeding (JAE, 2014): Activity level and feeding with and without predator cue Toscano BJ, Gatto J, Griffen BD (2014) Effects of predation threat on repeatability of individual crab behavior revealed by mark recapture. Behavioral Ecology and Sociobiology 68:519-527P. herbstii - recapture behavior (BESB, 2014): Mud crabs refuge use and activity level - initial measurementsP. herbstii - refuge use (BESB, 2014): Effect of predation threat on repeatability of individual crab behavior revealed by mark-recapture Griffen BD, Altman I, Bess BM, Hurley J, Penfield A (2012) The role of foraging in the success of invasive species. Biological Invasions. 14:2545-2558Hemigrapsus seasonal diet (Bio.Inv. 2012): Percent herbivory and gut fullness for Hemigrapsus sanguineus at different times of year Griffen BD, Toscano B, Gatto J (2012) The role of intraspecific trait variation in mediating indirect interactions. Ecology 93:1935-1943P. herbstii refuge use (Ecology, 2012): Proportion of time that Panopeus herbstii spent using refuge habitats in a lab experimentP. herbstii: Field personality distribution (Ecology, 2012): Field distribution of personality types in the mud crab Panopeus herbstii relative to tidal heightP. herbstii: Trait mediated indirect effect (Ecology, 2012): Influence of refuge use by the mud crab Panopeus herbstii on consumption of bivalves 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):e0176263A. pisonii: egg size: Comparing egg size in Aratus pisonii populations from mangrove and salt marsh habitatsA. pisonii: fecundity: Determining fecundity of Aratus pisonii populations in mangrove and salt marsh habitatsA. pisonii: larval starvation resistance: Comparing larval quality in Aratus pisonii populations from mangrove and salt marsh habitatsA. pisonii: latitudinal body size: Survey examining latitudinal body size patterns in Aratus pisoniiA. pisonii: predation: Comparing predation pressure on Aratus pisonii in mangrove and salt marsh habitatsA. pisonii: reproductive effort: Survey comparing Aratus pisonii reproductive effort in native and novel habitatsA. pisonii: herbivory: Relationship between leaf herbivory, tree characteristics, and refuge availabilityA. pisonii: mangrove tree survey: Mangrove tree distribution and characteristics in a dwarf mangrove system 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.A. pisonii: behavior: Proportion of time the mangrove tree crab Aratus pisonii spent in different behaviors related to diet and energy storageA. pisonii: dock-marsh thermal: Thermal readings from under a dock and in a nearby salt marshA. pisonii: sun-shade: Proportion of time that mangrove tree crab Aratus pisonii spent in sun and shade in three habitats, 2015-2016.A. pisonii: thermal picture: Thermal condition of A. pisonii in three habitats: under dock, mangroves, saltmarsh


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Funding

Funding SourceAward
NSF Division of Ocean Sciences (NSF OCE)

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This document is created by info v 4.1f 5 Oct 2018 from the content of the BCO-DMO metadata database.    2020-02-23  11:03:55