Reproductive

Program, Project, or Expedition Name:

Reproductive Biology of Jonah crab, Cancer borealis

Data Link:


InstitutionLMRCSC, UMES
Principal InvestigatorBrad Stevens | bgstevens@umes.edu | 410-651-6066
Funding Agency/Contract # NOAA EPP, LMRCSC, NA16SEC4810007
Collection Start Date6/1/2016 
Objectives of Data Collection EffortDetermine reproductive cycle, size at maturity, gonad development, egg maturation, mating season
Collection End Date9/1/2018
Data Collectors Identifying NumbersN/A
Ship or Other Platform NameF/V Paka
Geographic Location [Latitude(s)/longitude(s)]37.72 to 38.71 N; -74.34 to -74.97 W 
Unitsmm, micrometers, ratios, relative condition
Data Parameterscrab size, egg size, gonad develop-ment,  shell condition
Precision1.0, 1.0, 0.01, 1
Observation Methodologyvisual, microscopy
Instrument/Gear  Identification of DescriptionN/A
Analysis MethodologyAnova,t-test, general linear models, mixed-model analysis
Data Processing/ Reduction MethodologyCustom written R code, various R packages
Explanations of Data Quality FlagsNone
Citations of Relevant Publications and Grey LiteratureOlsen, N. A. and B. G. Stevens. 2020
Size at Maturity and Reproductive Characteristics
of Male and Female Jonah Crabs Cancer borealis in the Mid-Atlantic Bight
Scroll to Top