Investigation of geographic origin, salinity and feed on stable isotope profile of Pacific white shrimp (Litopenaeus vannamei )

Abstract

Increasing numbers of mislabelled seafood products in the globalized market underline the need for approaches to identify the origin of these products. Pacific white shrimp cultured in different salinities (Litopenaeus vannamei) from 16 locations in China and USA were collected and differentiated based on d 13 C and d 15 N values. The d 13 C and d 15 N values of 16 commercial feeds used in shrimp culture were measured and effects of feed on C and N stable isotope composition in shrimp were investigated. Carbon and nitrogen isotopic analysis of the shrimp did not provide means to discriminate farmed shrimp from China and USA. However, the shrimp cultured in water with high salinity were enriched in 13 C compared to shrimp cultured in freshwater and this provided another basis for discrimination. The correlation between d 13 C in feed and shrimp was not significant, while the d 15 N in feed and shrimp showed a trend of positive correlation.

Fraud in Animal Origin Food Products: Advances in Emerging Spectroscopic Detection Methods over the Past Five Years

“…During shrimp culture, the farmers may use several brands of commercial feeds with different ingredients and isotopic signatures. Li et al [156] reported that the δ 13 C and δ 15 N values in 16 commercial feeds used in shrimp culture in China ranged from −23.03 to −24.75% , and from 2.1 to 8.18% , respectively. The dietary shifts could influence the stable isotope signature of shrimp.…”

“…Compared with the marine ecosystem, the freshwater ecosystem generally has low δ 13 C and δ 15 N values [159,161]. Previous studies reported different δ 13 C and δ 15 N values in shrimp and fish cultured in freshwater and seawater [156,159]. Hence, all of these factors should be compared when using isotopic traceability methods to allow for deter animal origin product fraud.…”

“…Camin and co-authors [ 151 ] reported the H/O ratios of Italian rainbow trout fillets were positively interrelated with the O ratio of tank water. However, the other stable isotopes 13 C/ 12 C, 15 N/ 14 N, and 34 S/ 32 S were reported to be affected by diet [ 11 , 156 , 157 ]. Taking shrimp as an example, the δ 13 C and δ 15 N values in shrimp are significantly related to the food sources [ 158 ].…”

Estudos de crustáceos decápodes com isótopos estáveis: Análise bibliométrica entre 2010 e 2020

“…Organismos cultivados são influenciados por diferentes regimes alimentares e ambientes em comparação com organismos pescados no habitat natural. Essas diferenças levam às composições isotópicas distintas e, consequentemente, a rastreabilidade dos produtos (ARECHAVALA-LOPEZ et al, 2013;VINCI et al, 2013;GAMBOA-DELGADO et al, 2014;LI et al, 2018;FERREIRA et al, 2021). Os isótopos estáveis comumente utilizados na autenticação e rastreabilidade são 13 C/ 12 C, 18 O/ 16 O, 2 H/ 1 H, 15 N/ 14 N e 34 S/ 32 S, 11 B/ 10 B e 87 Sr/ 86 Sr (LI et al, 2016).…”

“…A técnica de isótopos estáveis tem potencial no fornecimento de informações da exploração pesqueira de decápodes, e pode servir como ferramenta para avaliar os impactos nas espécies exploradas (e.g. JACKSON et al, 2012;GAMBOA-DELGADO et al, 2014;MAZUMDER et al, 2015;ORTEA e GALHARDO et al, 2015;FRY et al, 2016;GORMAN et al, 2017;HINZ et al, 2017;LI et al, 2018;GOPI et al, 2019;MARTÍNEZ-DURAZO et al, 2019;GÜL & GRIFTEN et al, 2020;TAO et al, 2020;YORIO et al, 2020;FERREIRA et al, 2021). Entretanto, esses estudos ainda não representam percentual elevado das abordagens realizadas na última década (Figura 3).…”