Gladstone Fish Health Investigation 2011 - 2012 - Western Basin ...

0.07Port 2Hepatosomatic index0.060.05Calliope R 2Bundaberg 2Hamilton Pt 2Fitzroy R 2Rodds Bay 2Narrows 1Hamilton Pt 1Bundaberg 1Narrows 2Calliope R 1Port 1Fitzroy R 1Rodds Bay 12 3 4 5 6 7 8 9Abnormal %Figure 6.1. Movements of the mudcrab location means over trips. The reference sites are indicated by thesquares with the dotted lines.For all sites, the hepatosomatic index was higher for trip 2. Trip 2 also sees similar or lower percentagesof abnormals than trip 1, for all sites except for the Narrows. Except for Port, all sites are in the samegeneral spatial vicinity (and hence not notably different from) the two reference sites, at each trip.Possibly due to the low number of abnormal crabs (57), the distributions of these counts across thehighest observed lesion class also showed no significant effects for location or trip (P = 0.14 and 0.13respectively). Again, all categories were observed both at the reference sites and across the Gladstoneregion. These counts are listed in Table 6.4 for completeness.Table 6.4. Lesion ca tegories – counts by locations.L1 L2 L3 L4 L5Fitzroy River 2 6 1 1 4Bundaberg 0 1 1 2 2The Narrows 1 0 2 2 1Port 2 5 1 1 1Hamilton Point 0 2 1 2 2Calliope River 1 1 2 1 0Rodds Bay 1 3 0 4 1127