. Bulletin. Science. 166 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. San Diego Bay Mission Bay Culture Seawater Dike Rock Brood Site: SDB c^Z3 MB DR Fig. 3. Culture water and brood site effects on (A) the mean percentage of stage I zoeae, Pach- ygrapsus crassipes, surviving to the megalopal stage of development, (B) the mean percentage of stage VI zoeae, Pachygrapsus crassipes, which molted from the sixth zoeal stage to the megalopal stage, and (C) the survival time (days) for laboratory cuhured crab megalopae, Pachygrapsus crassipes since molting from the sixth zoeal stage of development. Error
. Bulletin. Science. 166 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. San Diego Bay Mission Bay Culture Seawater Dike Rock Brood Site: SDB c^Z3 MB DR Fig. 3. Culture water and brood site effects on (A) the mean percentage of stage I zoeae, Pach- ygrapsus crassipes, surviving to the megalopal stage of development, (B) the mean percentage of stage VI zoeae, Pachygrapsus crassipes, which molted from the sixth zoeal stage to the megalopal stage, and (C) the survival time (days) for laboratory cuhured crab megalopae, Pachygrapsus crassipes since molting from the sixth zoeal stage of development. Error bars indicate ±1 SE. MB= Mission Bay, SDB= San Diego Bay, DR= Dike Rock. Culture water treatments sharing the same letter (a, b) are not significantly different. Brood site results are given in the text. Development Time Laboratory-based estimates of ATM (mean zoeal duration, stages I through VI) for individual P. crassipes larvae ranged from 68 d to 108 d. There were no significant differences in ATM for P. crassipes zoeae as a function of brood site (2-way ANOVA, F2.,9=, p=) or culture water (F2.,9=, p=; interaction term, F4 ,9=, p=). Survival to Megalopae Source water had a significant effect on the percentage of zoeae surviving to the megalopal stage of development (2-way ANOVA, F2,x = , p=), while differences due to the site of larval origin were not significant (F, is=, p=; interaction term, F4,x=, p=) (Fig. 3A). Cultures reared in SDB seawater yielded a significantly lower percentage of megalopae ( ± ; mean ± SD) than those reared in DR seawater ( ± ; Student-/;. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern California Academy of Sciences. Los Angeles, Calif. : The Academy
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