Population genetics of three threatened catfish species in the Cauca River, Colombia

For the discussion of catfish systematics. Post here to draw our attention to new publications or to discuss existing works.
Post Reply
User avatar
bekateen
Posts: 8955
Joined: 09 Sep 2014, 17:50
I've donated: $40.00!
My articles: 4
My images: 130
My cats species list: 142 (i:102, k:39)
My aquaria list: 36 (i:13)
My BLogs: 44 (i:149, p:2653)
My Wishlist: 35
Spotted: 177
Location 1: USA, California, Stockton
Location 2: USA, California, Stockton
Contact:

Population genetics of three threatened catfish species in the Cauca River, Colombia

Post by bekateen »

Restrepo-Escobar, N., Yepes-Acevedo, A. J., & Márquez, E. J. (2021). Population genetics of three threatened catfish species in heterogeneous environments of the Cauca River, Colombia. Neotropical Ichthyology, 19(1).

https://doi.org/10.1590/1982-0224-2020-0040
https://www.scielo.br/scielo.php?pid=S1 ... xt&tlng=en
ABSTRACT

Neotropical catfishes , and are migratory fishes of commercial importance that exhibit decreasing populations due to overfishing and other anthropic interventions. This study used species-specific microsatellite loci to test the hypothesis that threatened fish populations show genetic vulnerability signs and are genetically structured in the middle and lower sections of the Cauca River. The studied species exhibit genetic diversity levels higher than the average values reported for Neotropical Siluriformes; however, they seem to have suffered recent bottlenecks and they present significant endogamy levels that are higher for the critically endangered catfish P. grosskopfii. Furthermore, both Ageneiosus pardalis and S. cuspicaudus are each formed by one genetic group, while Pimelodus grosskopfii comprises two coexisting genetic groups. The information obtained in this study is useful for the decision making in management plans that are appropriate for the sustainability of these three species populations within the proposal for the expansion of the hydroelectric development and other anthropic activities.
  • Keywords: Freshwater fish; Genetic diversity; Genetic structure; Microsatellites; Siluriformes
Image
Find me on YouTube and Facebook: http://youtube.com/user/Bekateen1; https://www.facebook.com/Bekateen
Buying caves from https://plecocaves.com? Plecocaves sponsor Bekateen's Fishroom. Use coupon code "bekateen" (no quotes) for 15% off your order.
Post Reply

Return to “Taxonomy & Science News”