Data from: Ecological correlates of the distribution limits of two poeciliid species across a salinity gradient

 

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Title Torres-Dowdall etal. BJLS 2555.R1. Statistical niche model data
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Description Data used in the construction and testing of the Statistical niche model of Poecilia reticulata and Poecilia picta. The column labeled ‘Data’ specifies if that location was used for training the model or testing it. The ‘Drainage/Area’ column indicates either the drainage or the geographic region where the river is located. The ‘Locality’ column gives more information on the location of sampling or the name of the river sampled. The ‘P.picta’ and ‘P.reticulata’ columns specify if that particular species was present or absent at that sampling locality. Then information about the sites is presented in the following order: latitude, longitude, elevation (measured in meters above sea level), salinity (measured in part per thousands), dissolved oxygen (measured in milligrams per liter), and pH. Finally, the date of sampling is indicated.
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Title Torres-Dowdall etal. BJLS 2555.R1. Phenotypic data
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Description Data used in the analysis of phenotypic variation observed in wild-caught fish of Poecilia reticulata and Poecilia picta (‘Species’ column). Phenotypes measured in males include size and condition index (Kn). Phenotypes measured in females include reproductive allocation, fecundity, mean size of developing embryos, and condition index (Kn). ‘ID’ indicates internal collection number. ‘Sex’ specifies if data was collected from a male or a female. ‘Drainage’ refers to the drainage from where wild fish were collected. ‘Locality’ refers to the place along each drainage from where fish were collected (‘Upstream’ correspond to a freshwater-upstream locality where only P. reticulata occurred, ‘Midstream’ to a freshwater-midstream locality where both species were present, and ‘Downstream’ to a brackish water-downstream locality where only P. picta occurred). Size was measured as standard length of the fish (‘Length’ column, units in millimeters). Adult mass is presented as eviscerated dry mass (‘Mass’ column, units milligrams). ‘Kn’ refers to condition index, which was determined using this formula (Kn= Mi/aLib); where (a) is the intercept and (b) the slope of the least squares regression of log-transformed individual dry mass (Mi) on log-transformed individual standard length (Li). ‘#_Embryos’ was used to determine fecundity, and is a measure the number of developing embryos found in a female at the time of euthanasia. ‘Mean_offspring_mass’ is a measure of the size of each developing embryo at the time of the female’s euthanasia. ‘Reproductive_allocation’ is a measure of the percentage of the mass of a female dedicated to reproduction. ‘Mean_Stage’ is a measure of the developmental stage in which the embryos were at the time of the female’s euthanasia. Missing data or not corresponding data are showed as a dash.
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When using this data, please cite the original publication:

Torres-Dowdall J, Dargent F, Handelsman CA, Ramnarine IW, Ghalambor CK (2013) Ecological correlates of the distribution limits of two poeciliid species across a salinity gradient. Biological Journal of the Linnean Society 108(4): 790–805. http://dx.doi.org/10.1111/bij.12031

Additionally, please cite the Dryad data package:

Torres-Dowdall J, Dargent F, Handelsman CA, Ramnarine IW, Ghalambor CK (2013) Data from: Ecological correlates of the distribution limits of two poeciliid species across a salinity gradient. Dryad Digital Repository. http://dx.doi.org/10.5061/dryad.s1v35
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