Evaluation of radiography, ultrasonography and endoscopy for detection of shell lesions in live abalone Haliotis iris (Mollusca: Gastropoda).
Radiography, ultrasonography and endoscopy were examined for their efficacy as non-destructive techniques for the detection of shell lesions in the marine gastropod Haliotis iris Gmelin. X-rays provided 69% correct diagnoses, with detection being restricted to those lesions which were mineralised. Ultrasound also showed potential to reliably detect lesions (83% correct diagnoses), but only where the lesions demonstrated a clear 3-dimensional relief. Lesion dimensions were underestimated using ultrasound. Endoscopy, applied to anaesthetised individuals, provided the most accurate method (92% correct diagnoses) for lesion detection and, although invasive, had no discernible effect on survival of the abalone 8 mo after screening.
Department of Marine Science, School of Medical Sciences, University of Otago, Dunedin, New Zealand. hendrik.nollens@advalvas.be
Hendrik H
HH
Nollens
John C
JC
Schofield
Jonathan A
JA
Keogh
P Keith
PK
Probert
D000818:Animals; D004724:Endoscopy / Q000379:methods*; D008974:Mollusca; D011859:Radiography / Q000379:methods*; D012680:Sensitivity and Specificity; D014463:Ultrasonography / Q000379:methods*