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Ornamental fishes in the rio Xingu and rio Iriri

Posted: Mon Aug 02, 2021 5:53 pm
by bekateen
As a follow up to this paper:
bekateen wrote: Mon Jul 12, 2021 7:12 pm Lucena MDL, Pereira TS, Gonçalves AP, Silva KD, Sousa LM. Diversity of Loricariidae (Actinopterygii: Siluriformes) assemblages in two Conservation Areas of the Middle Xingu River, Brazilian Amazon, and their suitability for sustainable ornamental fisheries. Neotrop Ichthyol. 2021; 19(2):e200100.
Lucena, MDL de., Pereira, TDS., Gonçalves, AP., Silva, KD., & Sousa, LMD. (2021). FISH SPECIES OF THE LORICARIIDAE FAMILY WITH ORNAMENTAL POTENTIAL, IN TWO EXTRACTIVE REVERSES IN TERRA DO MIDAL – PA. Multidisciplinary Journal of Education and the Environment , 2 (2), 84. ... /view/1486
Introduction: The Xingu River is known for having one of the highest fish species richness in the Amazon region. Among the fish families that stand out in the Xingu River basin is the Loricariidae family represented by 60 species. This group is of fundamental importance for the ornamental fishing activity in the region and has been generating income for fishermen for decades. Objectives: Our objective was to evaluate the richness and composition of species of the Loricariidae family in the Extractive Reverses of rio Xingu and rio Iriri. Material and methods:The collections took place in 2016 in two periods: in the rainy season (January and February) the species were captured using diving equipment with compressed air and the use of cast nets; and during the dry season (August and September), fish were collected by free diving, cast net and vaqueta (a wooden instrument made by fishermen to facilitate the capture of fish). Results: A total of 6,059 specimens distributed in 32 species or morphotypes of Loricariidae were captured. Of the total, 24 species were common to the two RESEXes, they are: Ancistomus feldbergae, Ancistrus sp .2, Ancistrus sp .3, Aphanotorulus aff . emarginatus, Baryancistrus aff. niveatus, Baryancistrus chrysolomus, Baryancistrus xanthellus, Farlowella amazonum, Hopliancistrus wolverine, Hopliancistrus xikrin, Hypostomus gr . plecostomus, Leporacanthicus heterodon, Panaque armbrusteri, Parancistrus aurantiacus, Peckoltia sabaji, Peckoltia vittata, Pseudacanthicus pirarara, Pseudancistrus asurini, Scobinancistrus aureatus, Scobinancistrus pariolistracus, Sco . Three species were exclusive to the RESEX of the Iriri river: Ancistrus ranunculus, Ancistrus sp .4, Rineloricaria sp; and 5 species occurred only in the Xingu River RESEX: Ancistrus cf . ranunculus L255 , Ancistrussp.1 , Ancistrus sp.5 , Ancistrus sp.6 , Hypostomus gr . cochliodon . Conclusion: The number of species found in this study represents an average of 60% of the total species of Loricariidae already recorded for the Xingu River basin. In this way, it highlights the reserves as important areas for the conservation of the region's ichthyofauna, thus pointing out the importance of the different protection areas established along the Xingu River basin. These protected areas, although established as a priority in the conservation of terrestrial biodiversity, have ensured the preservation of aquatic organisms, especially the rich ichthyofauna present in these areas.

Re: Ornamental fishes in the rio Xingu and rio Iriri

Posted: Tue Aug 03, 2021 3:44 pm
by TwoTankAmin
It is too bad this and other similar studies did not happen until after the Belo Monte dam was built instead of when they should have been done.

Imagine the day when there are no ornamental fresh water fish left in the wild. I am old and will, hopefully, be long gone before this day comes. I am not so sure about the timing any more. Basically, I see studies like this one coming just in time time to identify the species that will be lost. *sigh*

Does anybody really believe that protection areas will do anything to insure the survival of the species? Do we really believe these too will not be gone down the road?