International Journal of Fisheries and Aquatic Studies
2024, Vol. 12, Issue 1, Part A
Colossoma macropomum (Characiformes: Serrasalmidae) adapted to new climate regime: Differential gene expression from farmed tambaqui juveniles raised in subtropical and tropical regions
Author(s): Fernanda Garcia Dragan, Luciana Mara Fé Gonçalves and Vera Maria Fonseca de Almeida-Val
Abstract: The Brazilian native fish species with the highest potential in fish farm is
Colossoma macropomum. This work investigated whether two populations of farmed
C. macropomum respond equally to their captive habitats. 20 tambaqui juveniles from the Brazilian fish farms Balbina and Brumado were selected. We examined genes of specific metabolic pathways:
hsp70,
hif-1α,
per-1,
cry-1,
acly,
mstn,
ube3a,
ras and
ogt. Expression of
ras (p = 0.041),
cry-1 (p = 0.001),
per-1 (p = 0.001),
ogt (p = 0.001) and
acly (p = 0.025) were significantly lower in Brumado fish. Heatmaps showed extreme relative expression differences for some genes. Integrated biomarker response values for Balbina and Brumado populations were 42.7 and 6.79, respectively. In general, the Brumado population presented lower gene expression than Balbina fish. The differential genetic structure of the populations is likely the most impacting factor, suggesting local adaptation.
DOI: 10.22271/fish.2024.v12.i1a.2886Pages: 19-25 | 208 Views 130 DownloadsDownload Full Article: Click Here
How to cite this article:
Fernanda Garcia Dragan, Luciana Mara Fé Gonçalves, Vera Maria Fonseca de Almeida-Val.
Colossoma macropomum (Characiformes: Serrasalmidae) adapted to new climate regime: Differential gene expression from farmed tambaqui juveniles raised in subtropical and tropical regions. Int J Fish Aquat Stud 2024;12(1):19-25. DOI:
https://doi.org/10.22271/fish.2024.v12.i1a.2886
