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L066, L236, L287, L333, L399 & L400 = Hypancistrus seideli and L174 = Hypancistrus yudja
Posted: 10 Feb 2025, 01:25
by bekateen
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= Hypancistrus sp(1) [but not the same as sp. 1 here?] = Hypancistrus “complexo pão” = Hypancistrus sp. "pão” =
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Sousa, L. M. de ., Sousa, E. B. de ., Ribeiro, R. de O., Sabaj, M. H., Zuanon, J., & Py-Daniel, L. R.. (2025). Two new species of Hypancistrus (Siluriformes: Loricariidae) from the rio Xingu, Amazon, Brazil. Neotropical Ichthyology, 23(1), e240080.
https://doi.org/10.1590/1982-0224-2024-0080
https://www.scielo.br/j/ni/a/VVCvG6vydwJXhgQ5z3gYpJb/
Abstract
Hypancistrus was proposed as a monotypic genus for a highly unique species, H. zebra, known only from a short stretch of the Middle rio Xingu on the Brazilian Shield. Subsequent studies added eight species, all described from river systems draining the Guiana Shield. Analysis of Hypancistrus specimens from the middle and lower Xingu detected two new species that can be separated from its congeners based on color pattern and body size of adults, and that are well known from the ornamental fish trade. Due to their non-overlapping distributions, the prospects of conserving the two species are quite different. One of the species is relatively safe due to its relatively large distribution throughout the Lower Xingu channel up to the downstream end of Volta Grande do Xingu, while the other is in need of urgent protection because it is restricted to a short stretch of the Middle Xingu channel at depths greater than 15 meters, and its distribution lies entirely within the impact zone of the Belo Monte Hydroelectric Power Plant Complex.
Keywords: Belo Monte dam; Endangered species; Identification key; Ornamental fish; Taxonomy
Re: L066, L236, L287, L333, L399 & L400 = Hypancistrus seideli and L174 = Hypancistrus yudja
Posted: 10 Feb 2025, 10:14
by medaka
Interesting; it is nice to have these things sorted out. its been quite a few years since debate was started as to the relationship between these L No's.
Congratulations Ingo Seidel.
Re: L066, L236, L287, L333, L399 & L400 = Hypancistrus seideli and L174 = Hypancistrus yudja
Posted: 10 Feb 2025, 11:46
by Jools
Hi Eric,
Thanks for posting all this - another one of those "and now this day has come" moments. There always was the reality of all these fishes being variants. Great to see Ingo being recognised. Let me have a go at renaming all this - there is a lot to do outside of just renaming the species.
Cheers,
Jools
bekateen wrote: 10 Feb 2025, 01:25
=
=
=
=
=
= Hypancistrus sp(1) [but not the same as sp. 1 here?] = Hypancistrus “complexo pão” = Hypancistrus sp. "pão” =
.
=
.
Sousa, L. M. de ., Sousa, E. B. de ., Ribeiro, R. de O., Sabaj, M. H., Zuanon, J., & Py-Daniel, L. R.. (2025). Two new species of Hypancistrus (Siluriformes: Loricariidae) from the rio Xingu, Amazon, Brazil. Neotropical Ichthyology, 23(1), e240080.
https://doi.org/10.1590/1982-0224-2024-0080
https://www.scielo.br/j/ni/a/VVCvG6vydwJXhgQ5z3gYpJb/
Abstract
Hypancistrus was proposed as a monotypic genus for a highly unique species, H. zebra, known only from a short stretch of the Middle rio Xingu on the Brazilian Shield. Subsequent studies added eight species, all described from river systems draining the Guiana Shield. Analysis of Hypancistrus specimens from the middle and lower Xingu detected two new species that can be separated from its congeners based on color pattern and body size of adults, and that are well known from the ornamental fish trade. Due to their non-overlapping distributions, the prospects of conserving the two species are quite different. One of the species is relatively safe due to its relatively large distribution throughout the Lower Xingu channel up to the downstream end of Volta Grande do Xingu, while the other is in need of urgent protection because it is restricted to a short stretch of the Middle Xingu channel at depths greater than 15 meters, and its distribution lies entirely within the impact zone of the Belo Monte Hydroelectric Power Plant Complex.
Keywords: Belo Monte dam; Endangered species; Identification key; Ornamental fish; Taxonomy
Re: L066, L236, L287, L333, L399 & L400 = Hypancistrus seideli and L174 = Hypancistrus yudja
Posted: 10 Feb 2025, 20:10
by bekateen
Jools wrote: 10 Feb 2025, 11:46
Hi Eric,
Let me have a go at renaming all this - there is a lot to do outside of just renaming the species.
Cheers,
Jools
My thought exactly. I didn't touch them yesterday for that very reason. If I had undertaken it, the only thing I might have done was be sure to caption each photo with its respective L number for future reference, in case the group every got broken up again to more than one species.
What might be helpful, but IDK how you do it, would be to make it so the BLOG reports retain a mention of the L number they belonged to when they were written since maybe there are minor differences in egg counts, development speed, etc.
Cheers,
Eric
Re: L066, L236, L287, L333, L399 & L400 = Hypancistrus seideli and L174 = Hypancistrus yudja
Posted: 11 Feb 2025, 11:48
by Jools
The variant feature can be used for the purpose, but I don't think it is in the "my cats" / Blogs functions. Maintaining a variant as it moves from one species to another is also going to be a bit hairy. But I can see this being necessary in other ways, so will look seriously at how to do it.
Cheers,
Jools
Re: L066, L236, L287, L333, L399 & L400 = Hypancistrus seideli and L174 = Hypancistrus yudja
Posted: 11 Feb 2025, 15:47
by bekateen
Jools wrote: 11 Feb 2025, 11:48
The variant feature can be used for the purpose, but I don't think it is in the "my cats" / Blogs functions. Maintaining a variant as it moves from one species to another is also going to be a bit hairy. But I can see this being necessary in other ways, so will look seriously at how to do it.
Cheers,
Jools
In my experience with the variant function, it doesn't work well anymore. It was working with images, but now it's broken so photos which were assigned to one variant or another get forgotten and then no photos are assigned to any variants. That probably needs some attention before you rely on it to sort pics without adding L numbers to captions.
Cheers, Eric
