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 someone said to intimately younger
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).
Operating-system stage everyone was expose all the time as well as on a beneficial regular basis both in the field observations used of , and in the latest captive examination of 2002. Operating-system phase citizens were maybe not found in career findings conducted inside late . As zero significant difference was found in the month-to-month volume from new Os stage certainly one of males obtained out-of (Pearson chi-rectangular goodness of complement, [chi square] = step one.19, df = dos, P = 0.55), research out-of all the men amassed out-of during this time period were pooled for further data. During that months, Operating system stage boys was basically accumulated non-stop and showed zero extreme variations in regularity according to the period of time caught (Pearson chi-square jesus away from match, [chi square] = step 1.thirty-six, df = dos, p = 0.51). Also, new frequency from Operating-system phase guys don’t differ somewhat one of the newest five number one phase of one’s lunar duration (Pearson chi-rectangular, [chi-square] = 4.forty five, df = step 3, P = 0.22).
Os phase guys collected out-of ranged in size out-of 165 so you can 386 mm SL, and you can calico stage guys gathered at that moment months ranged when you look at the dimensions away from 170 so you’re able to 397 mm SL (Figure 6). The latest mean duration of amassed Operating-system phase people ( mm) are rather higher than the brand new mean length of built-up calico stage boys ( mm; Mann-Whitney, U = 5455.0, df = 247, P = 0.001). But not, which effect wasn’t felt biologically tall, as mature P. clathratus develop so you can lengths in https://datingranking.net/local-hookup/guelph/ excess of 700 mm SL (Love et al. 1996). The dimensions range of captive Operating-system phase males (211 so you can 348 mm SL) try similar to that of captive calico phase people (212 so you’re able to 343 mm SL). Operating system phase individuals seen in the field ranged inside the projected size off two hundred to help you five-hundred mm SL, when you are calico phase some one observed varied in size of a hundred so you’re able to 500 mm SL.
New projected spawning 12 months considering GSI and you can readiness analysis showed a routine like the monthly regularity of gathered Operating system stage males
The OS phase was present only in ripe males, whereas the calico phase was present in both ripe and unripe males. Sixty-seven percent of ripe males collected during 2001 were OS phase and 33% were calico phase. Among males collected from , the GSI range of OS males (0.42% to %) were similar to that of calico phase males (0.17 to %) (Figure 7a). However, the mean GSI of OS males (5.69%) was significantly higher than that of calico phase males (2.88%) collected from (Mann-Whitney, U = , df = 237, P < 0.01) (Figure 7b).