A dataset containing life history information for 659 spot-tail sharks, Carcharhinus sorrah, collected from north-eastern Australia.
Format
A data frame with 659 rows and 27 variables:
- month
Month, integer form
- year
Calendar year
- date
Date collected
- jday
Day of year
- tag
Identification number
- FL
Fork length (mm)
- TL
Total length (mm)
- PCL
Pre-caudal length (mm)
- length
Preferred length measurement (STL)
- wgt
Weight (mm)
- sex
2 level factor, NA if unavailable
- umb_scar
Umbilical scar open? Yes, no or partially
- clasp_length
Outer length of male claspers (mm)
- clasp_calc
Were claspers calcified? Yes, no or partially
- gonad_stage
Macroscopic staging of male testes (Not used)
- run_sperm
Running sperm present? Yes, no or partially (Not used)
- MOD
Maximum diameter of the largest ovarian follicle
- yolky_ova
Number of yolky ovarian follices (Not used)
- uter_stage
Macroscopic staging of female uterus
- maturity_stage
Binary maturity stage: 0, immature; 1, mature
- maternity_stage
Binary female maternity stage: 0, non-maternal; 1, maternal
- emb
Number of embryos
- embTL
Mean total length of embryos
- embryo
Is individual an embryo? TRUE/FALSE
- male_emb
Number of male embryos
- female_emb
Number of female embryos
- vertebrae
Vertebrae collected? TRUE/FALSE
- age_agree
Consensus age estimate, adjusted for date of birth