Fish size correlates to size and morphology of intermuscular bones in tambaqui Colossoma macropomum as shown by dissection and X-ray imaging methods.
2023
OLIVEIRA, N. F. A. | TORATI, L. S. | BORIN-CARVALHO, L. A. | LIMA, L. K. F. de | PUVANENDRAN, V. | DEMICIANO, T. H. | SILVA, J. J. T. da | BARROSO, A. da S. | VARELA, E. S. | NAISLAN F. A. OLIVEIRA, UNIVERSIDADE ESTADUAL DE MARINGÁ, PR | LUCAS SIMON TORATI, CNPASA | LUCIANA A. BORIN-CARVALHO, UNIVERSIDADE ESTADUAL DE MARINGÁ, PR | LEANDRO KANAMARU FRANCO DE LIMA, CNPASA | VELMURUGU PUVANENDRAN, CENTER FOR MARINE AQUACULTURE, Norway | THAÍS H. DEMICIANO, UNIVERSIDADE ESTADUAL DO TOCANTINS | JOSE J. T. DA SILVA, bolsista CNPASA | AURISAN DA S. BARROSO, bolsista CNPASA | EDUARDO SOUSA VARELA, CNPASA.
One of the main issues in the processing sector of the tambaqui Colossoma macropomum is the removal and/or fragmentation of intermuscular bones (IBs), which negatively impacts its production chain. In this sense, we quantitatively examined the IB variation in farmed tambaqui (n = 127) by comparing the direct anatomical dissection with the high-resolution X-ray imaging method. The number of IBs from the anatomical dissection on the left side of the fish (27.3 ± 5.70 bones) was comparable to that of X-ray analysis (26.9 ± 6.03 bones) (p > 0.05). In addition, 76% of deviation in IB number between the two studied methods was one to three, indicating both methods are equally efficient for identifying and quantifying IBs. We found a strong positive correlation (R = 0.8, p < 0.001) between the X-ray and the dissection methods. Our predictive models indicated that more than 50% of variation in IB length can be explained by growth parameters. Our results demonstrated that the X-ray method can provide accurate phenotypic data (in vivo) for IB counting and length measurements by extrapolating from the standard length, body weight and trunk over axis area of tambaqui.
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