Table 1. Total length and ontogenetic stage of bull sharks in the Gold Coast System.
Habitat | Seasons | ||||
Spring | Summer | Autumn | Winter | ||
RU | Mean TL(± SE) | 109.66 (6.30) | 85.19 (2.91) | 85.24 (6.73) | 94.00 * |
Range (cm) | 96–122 | 75–109 | 49–113 | – | |
Stage | J | N, J | N, J | J | |
CU | Mean TL(± SE) | – | 82.77 (1.54) | 85.00 (1.55) | – |
Range (cm) | – | 79–85 | 79–87 | – | |
Stage | – | N, J | N, J | – | |
RL | Mean TL(± SE) | 111.49 (6.55) | 89.93 (5.09) | 126.90 (12.16) | – |
Range (cm) | 89–127 | 85–95 | 93–181 | – | |
Stage | J, A# | J | J, SA | – | |
CL | Mean TL(± SE) | 114.87 (14.68) | 117.23 (17.16) | 114.30 (6.12) | – |
Range (cm) | 86–133 | 89–148 | 92–142 | – | |
Stage | J | J | J | – |
Mean (±SE) total length (TL) and range of C. leucas of different ontogenetic stages (N = neonate, J = juvenile, SA = subadult, A = adult) caught on rod and line (n = 8), longlines (n = 49) and in gillnets (n = 9) in the upper and lower areas of the Nerang River (natural habitat) and the upper and lower canals (man-made habitat) from January 2006 to December 2008. (RU = river upper, CU = canal upper, RL = river lower, CL = canal lower). Note: rod and line fishing done sporadically across the entire system and gillnets were only deployed in the upper reaches of the Nerang River. Note: A# = a putatively pregnant female 300 cm TL.