GSI from each other genders increased off April so you’re able to Summer, peaked in Summer, and you may steadily refuted throughout the summer and you may slip

GSI from each other genders increased off April so you’re able to Summer, peaked in Summer, and you may steadily refuted throughout the summer and you may slip

Calico phase individuals were observed at both transect sites throughout the study period (Figure 4). OS phase males were observed at both transect sites from , where they increased in frequency over this period (Figure 4). Monthly variations in the proportion of OS phase individuals observed on transects were significantly different than expected at random for both the Intake Pipes site (Pearson chi-square goodness of fit, [chi square] = , df = 7, P < 0.01) and the Pumpernickel Cove site (Pearson chi-square goodness of fit, [chi square] = , df = 7, P < 0.01).

The second incorporated people thought to intimately young

Mean monthly GSI of males (Figure 3) and females (Figure 5) remained low from January to April. GSI values of males and females were lowest in February and December. Monthly variations in male GSI (Kruskal-Wallis, KW = , df = 8, P < 0.01) and female GSI (Kruskal-Wallis, KW = , df = 8, P < 0.01) were significant. Males and females containing visibly ripe gonadal tissue were collected from May to October, and over 93% of adults collected from June to August were visibly ripe. Females with hydrated ovaries were collected from June through September, and the highest frequency of hydrated females occurred in July (Figure 5). The mean GSI of females with hydrated ovaries (5.79%) was significantly higher than the mean GSI of non-hydrated, ripe females (3.56%; unpaired t test, t = 7.78, df = 229, p < 0.01).

Os phase people were establish from day to night as well as on a beneficial daily basis in both the field observations presented regarding , plus in the fresh captive examination of 2002. Operating system phase citizens were perhaps not observed in profession observations presented when you look at the later .

Read moreGSI from each other genders increased off April so you’re able to Summer, peaked in Summer, and you may steadily refuted throughout the summer and you may slip