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melissamonk-NOAA / Vermilion_2021

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DATA 5 Biology #7

Open melissamonk-NOAA opened 3 years ago

melissamonk-NOAA commented 3 years ago

Decisions and sources of biological parameters

Sources for biological data:

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 commented 3 years ago

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 commented 3 years ago

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 commented 3 years ago

[@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 commented 3 years ago

[@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 commented 3 years ago

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