DATA 5 Biology

[melissamonk-NOAA]

Decisions and sources of biological parameters

Sources for biological data:

• E.J.'s paper for fecundity relationship
• Weight-length
• Growth (see age sources sheet and will explore when ages available)
• Sex-specific growth?
• Species-specific growth or differences north and south of Conception?

Steepness prior: The SSC-approved steepness prior for rockfish species in 2021 has a mean value of 0.72 and standard deviation of 0.16.

Natural mortality prior: This prior is defined as a lognormal distribution with median value (corresponding to the mean in log-space) = 5.40/maximum age and log-scale sigma = 0.438. Both parameters should include exactly three significant digits.

[EJDick-NOAA]

Also maturity. Paper for OR (Vermilion age and growth_Info Report 2012_05.pdf) uploaded to Gdrive.
Fecundity for vermilion wasn't in my paper, because of too few species in the subgenus. Love et al (1990)
provide Fec-Len parameters for SoCA. I uploaded the paper to the Gdrive.

[melissamonk-NOAA]

Maturity from Melissa Head expected in April.

Northern CA:
[@Echeveria1987] - total length (years- surface aged); no regression for maturity for vermilion
Males 1st: 35 (5), 50%: 38 (5), 100%: 43 (8)
Females 1st: 37 (5), 50%: 37 (5), 100%: 46 (9)

[melissamonk-NOAA]

[@lea1999] Bio notes
weight-length values from 22 fish W = (0.00000431)TL^3.23
females reproductively active throughout the year
smallest size at sexual maturity: females 365mm TL

[@Phillips1964]
Fecundity: "The number of developing eggs in the paired ovaries increases from 63,000 in a fish 12½ inches
long, to about 1,600,000 in a fish 21½ inches long."
50% mature at 13 inches

[EJDick-NOAA]

[@love1990b], Southern California, nominal S. miniatus
Weight (g) - Total Length (cm): W = 0.02157L^2.92339
TL at 1st, 50%, and 100% maturity for females (n=333?): 31, 37, 47
Fecundity: F = 0.000002L^5.0226, n=45

[melissamonk-NOAA]

Total length to fork length conversion
LNGTH = 7.454+(FISH_TL*0.9488)