Somatic indices and nutritional composition of the roe of the native fish Dormitator latifrons

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Cynthia E. Montoya-Martínez https://orcid.org/0000-0002-8646-6762
Olimpia Carrillo-Farnés https://orcid.org/0000-0002-4650-9123
Fernando Barreto-Curiel https://orcid.org/0000-0001-5177-6632
Daniel Badillo-Zapata https://orcid.org/0000-0002-8646-6762
Carlos A. Álvarez-González https://orcid.org/0000-0001-9240-0041
Javier M.J. Ruíz-Velazco Arce https://orcid.org/0000-0003-1193-2164
Héctor Nolasco-Soria https://orcid.org/0000-0003-1584-4647
Fernando Vega-Villasante https://orcid.org/0000-0003-4208-265X

Keywords

proximate composition, fatty acids, essential amino acids

Resumen

Objective: To evaluate some reproductive aspects of D. latifrons and the nutritional quality of its eggs.


Design/methods/approach: Eighty-two fish were randomly collected (August 2021), and their sex, length, weight, somatic indices, Fulton condition index (K), proximate composition, and amino acid and lipid composition (fatty acids) of the gonads were determined.


Results: Of the total specimens collected, 62% were females; length and weight values were higher in males, but their gonadosomatic index (GSI) was lower than in females. Somatic indices did not show differences between different weight ranges. In the roe of D. latifrons, the average proximate composition was 24.3% protein and 8.5% lipids. The most abundant essential amino acids were leucine and lysine. Linoleic acid (C18:2n6) was the fatty acid with the highest concentration.


Limitations/implications: It is necessary to complement the analysis of the amino acid and fatty acid profile of the roe in wild organisms to relate the changes caused by balanced feed.


Findings/conclusions: This study shows that the D. latifrons roe is a good source of amino acids and PUFA.

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