Filters: Tags: morphometrics (X)19 results (121ms)
Sexing wrens Troglodytes troglodytes indigenus using morphological measurements and discriminant analysis
Annual variation in common eider egg size: Effects of temperature, clutch size, laying date, and laying sequence
Mixed fractals and anisotropy in subantarctic marine macroalgae from South Georgia: Implications for epifaunal biomass and abundance
Field determination of body size and condition in passerines: A report to the British Ringing Committee
Genetic delineation of management units for the desert tortoise, Gopherus agassizii, in northeastern Mojave Desert
Population size, migration routes and breeding origin of Purple Sandpipers Calidris maritima wintering in Sweden
These data contain morphometric measurements collected on the left side of Cisco (Coregonus artedi) collected from Lake Ontario in 2018. Measurements were obtained by two methods, first by direct measurements made on the thawed specimens using a hand caliper by one person, then using a digital image technique. The digital image measurements were completed by two different measurers to evaluate how reproducible measurements extracted from digital images were between the two measurers.
Population decline in the federally endangered June sucker (Chasmistes liorus), a lakesucker unique to Utah Lake, Utah, has been attributed in part to hybridization with the more widespread Utah sucker (Catostomus ardens). As a group, suckers in Utah Lake exhibit considerable external morphological variation. Meristic and morphological ambiguities, presumably the result of hybridization, create a continuum of intermediate forms between Chasmistes and Catostomus extremes and prevent definitive identification to species. Here we describe and evaluate the morphological and genetic variation in suckers in Utah Lake by comparing a morphological analysis with amplified fragment length polymorphism and microsatellite analyses....
Reproductive season, clutch size, and egg size of the rainbow darter, Etheostoma caeruleum, from the Homochitto River, Mississippi, with an evaluation of data from the literature