The catfish distributions sticky

For the discussion of catfish systematics. Post here to draw our attention to new publications or to discuss existing works.
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Taxonomic revision of the Southernmost population of Hypostomus commersoni

Post by bekateen »

Bertora, A., Grosman, M. F., Sanzano, P. M., Cardoso, Y. P., & Rosso, J. J. (2018). Taxonomic revision of the Southernmost population of Hypostomus commersoni Valenciennes, 1836 (Siluriformes: Loricariidae) and comments on dispersal routes. Historia Natural, Series 3, 8(1): 2018/25-34

Bertora, A., Grosman, M. F., Sanzano, P. M., Cardoso, Y. P., & Rosso, J. J. (2018). Revision taxonómica de las poblaciones más australes de Hypostomus commersoni Valenciennes, 1836 (Siluriformes: Loricariidae) y comentarios sobre las vías de dispersión. Historia Natural, Series 3, 8(1): 2018/25-34

https://ri.conicet.gov.ar/handle/11336/87492
PDF: https://ri.conicet.gov.ar/bitstream/han ... sAllowed=y

New location reported: 36°55’38.66”S,58°56’8.70”W
Abstract
Hypostomus is one of the most diverse genus of South American freshwater catfishes. In Argentina, Hypostomus commersoni Valenciennes, 1836 is distributed throughout the major river networks of the La Plata River basin and in the Pampa Plain. The recent record of H. commersoni in the Langueyú stream, represents the southernmost occurrence for this species and highlights the role of Samborombón bay as a likely dispersal route. It also supports the role of artificial channels in the translocation of freshwater fauna. In this study, a taxonomic revision of H. commersoni from the Langueyú stream was performed and aspects about ichthyofauna dispersal routes are discussed. The taxonomy of populations in the extreme of the species’ distribution range contributes with information about geographic variation of characters.
  • Key words: Hypostominae, distribution, La Plata River basin, taxonomy, Langueyú stream.
Resumen.
Hypostomus es uno de los géneros más diversos de peces de agua dulce de Sudamérica. En Argentina, Hypostomus commersoni Valenciennes, 1836 se distribuye a lo largo de las principales redes de ríos de la cuenca del río de la Plata y en la llanura Pampeana. El reciente registro de H. commersoni en el arroyo Langueyú, representa la ocurrencia más austral de esta especie y destaca el papel de la bahía de Samborombón como probable ruta de dispersión. También apoya el rol de los canales artificiales en la translocación de la fauna de agua dulce. En este estudio se realiza una revisión taxonómica de H. commersoni del arroyo Langueyú y se discuten aspectos sobre las rutas de dispersión de la ictiofauna. La taxonomía de las poblaciones en los extremos del rango de distribución de las especies contribuye con información sobre la variación geográfica de los caracteres.
  • Palabras clave: Hypostominae, distribución, cuenca del Río de La Plata, taxonomía, arroyo
    Langueyú.
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Re: The catfish distributions sticky

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Frota, A., Ota, R. R., Deprá, G. D. C., Ganassin, M. J. M., & Graça, W. J. D. (2020). A new inventory for fishes of headwater streams from the rio das Cinzas and rio Itararé basins, rio Paranapanema system, Paraná, Brazil. Biota Neotropica, 20(1). http://dx.doi.org/10.1590/1676-0611-bn-2019-0833

Cetopsorhamdia iheringi
Imparfinis borodini
Imparfinis mirini
Phenacorhamdia tenebrosa
Rhamdia Quelen * I did not add this location to the R. quelen CLOG because that species is so muddled, I imagine it's quite likely the ID is incorrect.
Cambeva davisi
Cambeva diabola
Cambeva Iheringi
Corydoras(ln6) ehrhardti
Hypostomus ancistroides
Hypostomus hermanni
Hypostomus iheringii
Hypostomus strigaticeps
Hypostomus tietensis
Neoplecostomus selenae
Otothyropsis biamnicus

ABSTRACT:

The Rio das Cinzas and Itararé basins are important tributaries of the Paranapanema river, the major left-bank tributary of the upper Paraná basin. The upper reaches of both drainages intersect the northern portion of the APA Devonian Escarpment Environment Protection Area (EPA), an area considered crucial for the preservation of biodiversity. This study aimed to provide an ichthyofaunistic inventory for headwater streams of the Rio das Cinzas and Itararé basins, both within and off the borders of the EPA, increasing the knowledge about species already known from streams in the Paranapanema river system. We found 32 fish species, representing five orders and 12 families. Siluriformes was the richest order followed by Characiformes. Ten species presented high abundance of sampled individuals, contributing with 85. 0% of all specimens. Most species were classified as occasional (captured in less than 25% of samples) and only two species were classified as constant (captured in more than 50% of samples), which may reflect the altitudinal gradient. We did not record any introduced species in the sampled streams, reinforcing the need for at least maintaining the original area of ​​the EPA. We expanded the geographic distribution of Astyanax bifasciatus to the upper Paraná River system, confirming the cases of faunal exchange among several drainage systems in the boundaries of the Ponta Grossa Arch. Finally, we identified three putatively undescribed species that show a large biodiversity knowledge shortfall for the region studied.
  • Keywords: Altitudinal gradient; Devonian Escarpment; faunal exchange; upper rio Paraná
Attachments
Screenshot_20191222-095726_Chrome~2.jpg
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Re: The catfish distributions sticky

Post by bekateen »

Martine, G. (2019). Distribuição do ictioplâncton em diferentes micro-habitats do médio Rio Uruguai, Brasil. Dissertação de Mestrado, Programa de Pós Graduação em Ambiente e Tecnologias Sustentáveis da Universidade Federal da Fronteira Sul.
https://rd.uffs.edu.br/handle/prefix/3098
PDF: https://rd.uffs.edu.br/bitstream/prefix ... ARTINE.pdf

Ichthyoplankton of the middle Rio Uruguay basin:

Parapimelodus valenciennis
Pimelodus maculatus
Iheringichthys labrosus
Luciopimelodus pati
Pimelodus maculatus
Pseudoplatystoma corruscans
Sorubim lima
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Re: The catfish distributions sticky

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Terán, G. E., Aguilera, G., Díaz, F. R., Koerber, S., & Mirande, J. M. (2020). First record of Hypostomus roseopunctatus (Siluriformes: Loricariidae) for Argentina. Ichthyological Contributions of PecesCriollos, 65: 1-4. available as pdf-file at www.pecescriollos.de since 23.Mar.2020

https://media.hotelwebservice.com/media ... entina.pdf
Abstract
In this note we expand the known distributional range of Hypostomus roseopunctatus to the political boundaries of Argentina. The sole specimen was obtained in the Miriñay River, Uruguay River basin, province of Corrientes. With this record the number of Hypostomus species known from Argentina raises to 26.
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Pylodictis olivaris in Canada

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Illes, C., Colm, J. E., Mandrak, N. E., & Marson, D. M. (2020). Flathead Catfish (Pylodictis olivaris) reproduction in Canada. The Canadian Field-Naturalist, 133(4), 372-380.

https://www.canadianfieldnaturalist.ca/ ... /view/2323

DOI: http://dx.doi.org/10.22621/cfn.v133i4.2323
Abstract

Eleven Flathead Catfish (Pylodictis olivaris), representing at least five age classes, were collected between 2016 and 2018 in the lower Thames River, Ontario, Canada. The capture of two juveniles (total lengths 78 mm and 82 mm), the first records of juveniles in Canada, is a strong indication that reproduction has occurred. Previous records were thought to be individuals that dispersed from known populations in American waters of Lake Erie. Flathead Catfish is currently designated as data deficient by the Committee on the Status of Endangered Wildlife in Canada. These new findings may provide sufficient data to reconsider the conservation status of this species.
  • Keywords: Flathead Catfish; Pylodictis olivaris; reproduction; Great Lakes; Lake St. Clair; Thames River; juvenile; young- of-year
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Ageneiosus ucayalensis in the municipality of Viana, state of Maranhão, Brazil

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Coelho, AV, de Oliveira, CA, FREITAS, J., Figueiredo, MB, & de Almeida, ZDS RECORDS OF Ageneiosus ucayalensis (CASTELNAU, 1855), (OSTEICHTHYES: AUCHENIPTERIDAE), IN THE MUNICIPALITY OF VIANA, STATE OF MARANHÃO, BRAZIL. RECORDS OF Ageneiosus ucayalensis (CASTELNAU, 1855), (OSTEICHTHYES: AUCHENIPTERIDAE), IN THE MUNICIPALITY OF VIANA, STATE OF MARANHÃO, BRAZIL , 1-388.

https://www.atenaeditora.com.br/post-artigo/14706
ABSTRACT:

Viana is a municipality located in the micro region of Maranhão Lowlands, state of Maranhão. The Ageneiosus ucayalensis species is commonly known as mandubé, it is a freshwater fish of Siluriformes Order and commonly captured in the Baixada Maranhense. The specimens were captured by trawls with mesh sizes nets numbers 05, 06, 08, 09 and 10, in two localities of the municipality, Rio Maracu and Lago de Viana, between September 2014 and August 2015. A total of 71 individuals were captured throughout the study. In the Lake of Viana were captured 42 and in the River Maracu 29 individuals. In the month of December the largest number of specimens was obtained, in total there were 23 specimens, followed by March (13) and February (12). The distribution of the relative frequency of specimens by Total Length classes showed that the number of individuals was highest in the range of class comprising 12 to 14 cm. The average size was 14.07 cm. Currently, there is a growing concern for the preservation of these ecosystems and their species, since they serve food for riverside communities. This work, together with other studies on Ageneiosus ucayalensis species may delineate safe actions in the sustainable use of water resources in the region.
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Otothyropsis piribebuy in the Rio Tererê, Rio Paraguay basin, Brazil

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Hocama, G. S., de Oliveira Martins, F., & Severo-Neto, F. (2020). First record and extended distribution of Otothyropsis piribebuy (Loricariidae: Hypoptopomatinae) in Brazil. Papéis Avulsos De Zoologia, 60, e20206021. DOI: https://doi.org/10.11606/1807-0205/2020.60.21.

https://www.revistas.usp.br/paz/article/view/162087
ABSTRACT
Cascudinhos are a group of small benthic fishes included in the Hypoptopomatinae subfamily, inhabiting small to moderate streams and rivers within the Neotropical region, from Venezuela to Northern Argentina. Until now, Otothyropsis piribebuy originally described from the rio Paraguay basin, in Paraguay, is the only species of the genus not recorded in Brazil. Recent samples in the rio Tererê, rio Paraguay basin, Brazil, revealed a population of Otothyropsis with uncertain taxonomic identity. Therefore, the study aimed to unveil the distribution of Otothyropsis within Brazilian territory. External morphology, osteology, measurements, and counts (plates, teeth, and rays) of these specimens from rio Tererê were compared to data from the original description of O. piribebuy, and also with specimens of O. piribebuy sampled in Paraguayan territory. Observations indicated no differences among the analyzed specimens. Furthermore, a Principal Component Analysis (PCA), carried out using log-transformed measures from Brazilian and Paraguayan specimens, showed no separation of these populations, also indicating that all analyzed specimens pertain to the same species. Based on this, a prediction map of distribution, using Maximum Entropy, was produced. The correct identification of spatial range of occurrence is an essential step to ensure the conservation of species, and the extended distribution of Otothyropsis piribebuy was confirmed, enhancing the list of neotropical fish from Brazil.
Attachments
Figure 1. Distribution of Otothyropsis piribebuy within the rio Paraguay basin. Star = holotype; square = paratype; triangle = non-type, from Paraguay. Circles = new occurrence in Brazil.
Figure 1. Distribution of Otothyropsis piribebuy within the rio Paraguay basin. Star = holotype; square = paratype; triangle = non-type, from Paraguay. Circles = new occurrence in Brazil.
Figure 2. Otothyropsis piribebuy, nontype, first record in Brazilian territory, ZUFMS 5796, 23.8 mm SL, female, Rego d’Água, Porto Murtinho, Mato Grosso do Sul, Brazil.
Figure 2. Otothyropsis piribebuy, nontype, first record in Brazilian territory, ZUFMS 5796, 23.8 mm SL, female, Rego d’Água, Porto Murtinho, Mato Grosso do Sul, Brazil.
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Re: Taxonomic revision of the Southernmost population of Hypostomus commersoni

Post by Donovan05 »

bekateen wrote: Wed Nov 06, 2019 12:03 am Bertora, A., Grosman, M. F., Sanzano, P. M., Cardoso, Y. P., & Rosso, J. J. (2018). Taxonomic revision of the Southernmost population of Hypostomus commersoni Valenciennes, 1836 (Siluriformes: Loricariidae) and comments on dispersal routes. Historia Natural, Series 3, 8(1): 2018/25-34

Bertora, A., Grosman, M. F., Sanzano, P. M., Cardoso, Y. P., & Rosso, J. J. (2018). Revision taxonómica de las poblaciones más australes de Hypostomus commersoni Valenciennes, 1836 (Siluriformes: Loricariidae) y comentarios sobre las vías de dispersión. Historia Natural, Series 3, 8(1): 2018/25-34

https://ri.conicet.gov.ar/handle/11336/87492
PDF: https://ri.conicet.gov.ar/bitstream/han ... sAllowed=y

New location reported: 36°55’38.66”S,58°56’8.70”W
Abstract
Hypostomus is one of the most diverse genus of South American freshwater catfishes. In Argentina, Hypostomus commersoni Valenciennes, 1836 is distributed throughout the major river networks of the La Plata River basin and in the Pampa Plain. The recent record of H. commersoni in the Langueyú stream, represents the southernmost occurrence for this species and highlights the role of Samborombón bay as a likely dispersal route. It also supports the role of artificial channels in the translocation of freshwater fauna. In this study, a taxonomic revision of H. commersoni from the Langueyú stream was performed and aspects about ichthyofauna dispersal routes are discussed. The taxonomy of populations in the extreme of the species’ distribution range contributes with information about geographic variation of characters.
transfers reims
  • Key words: Hypostominae, distribution, La Plata River basin, taxonomy, Langueyú stream.
Resumen.
Hypostomus es uno de los géneros más diversos de peces de agua dulce de Sudamérica. En Argentina, Hypostomus commersoni Valenciennes, 1836 se distribuye a lo largo de las principales redes de ríos de la cuenca del río de la Plata y en la llanura Pampeana. El reciente registro de H. commersoni en el arroyo Langueyú, representa la ocurrencia más austral de esta especie y destaca el papel de la bahía de Samborombón como probable ruta de dispersión. También apoya el rol de los canales artificiales en la translocación de la fauna de agua dulce. En este estudio se realiza una revisión taxonómica de H. commersoni del arroyo Langueyú y se discuten aspectos sobre las rutas de dispersión de la ictiofauna. La taxonomía de las poblaciones en los extremos del rango de distribución de las especies contribuye con información sobre la variación geográfica de los caracteres.
  • Palabras clave: Hypostominae, distribución, cuenca del Río de La Plata, taxonomía, arroyo
    Langueyú.

Hola, gracias por esta información, especialmente los datos de contacto. estas son cosas muy útiles
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Re: Taxonomic revision of the Southernmost population of Hypostomus commersoni

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Donovan05 wrote: Tue Jun 30, 2020 9:55 pmHola, gracias por esta información, especialmente los datos de contacto. estas son cosas muy útiles
De nada. :-)
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Pterocryptis barakensis in River Tissa, Longding district, Arunachal Pradesh foothills

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Dutta, R., Ahmed, A.M., Pokhrel, H., Sarmah, R., Nath, D., Mudoi, L.P., Baruah, D., Bhagabati, S.K. & P. Songtheng. (2020). First report of an endangered silurid catfish, Pterocryptis barakensis (Siluridae) from Brahmaputra drainage, North Eastern Himalayan region of India. Journal of Applied Ichthyology, 36: 528-532.

https://doi.org/10.1111/jai.14042
https://onlinelibrary.wiley.com/doi/ful ... /jai.14042
Abstract
The present communication reports an endangered catfish of the family Siluridae, Pterocryptis barakensis (Vishwanath & Sharma) for the first time outside its type locality from Brahmaputra drainage. The specimens were collected from the River Tissa, Longding district, Arunachal Pradesh foothills of Himalayan region of North East India. The current study describes morphometric and molecular characteristics of this endangered species.
Attachments
From paper: Figure 1 (a), Map of River Tissa showing the sampling site. (b), Map showing type locality (filled triangle) and present locality (star mark) of Pterocryptis barakensis.
From paper: Figure 1 (a), Map of River Tissa showing the sampling site. (b), Map showing type locality (filled triangle) and present locality (star mark) of Pterocryptis barakensis.
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Re: The catfish distributions sticky

Post by bekateen »

Microglanis cottoides in the Rio Sali?

Hi All, As I'm updating the CLOG entries of the Microglanis, I've synonymized M. cibelae with Microglanis cottoides, based on the Souza-Shibatta et al. (2018) paper, and I'm also deleting occurrences of Cottoides in the lower Uruguay, based on the same paper above which attributed those reports, based on genetic markers to fish more like Microglanis malabarbai.

But there's a stray locality for cottoides out in the Rio Sali. I see no reports of that in the forum (esp. within the Distributions sticky), and I see no reports of collection on GBIF. In fact, GBIF has NO Microglanis out that direction at all.

Does anyone have context for this? If not, I'd like to remove the occurrence of cottoides there. The paper above says genetically, there are no cottoides in the Uruguay basin, but rather they are all spread throughout the coastal drainages.

If I'm making a big mistake here, please stop me. ;-)

Cheers, Eric
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Re: The catfish distributions sticky

Post by bekateen »

bekateen wrote: Mon Sep 07, 2020 12:32 am Microglanis cottoides in the Rio Sali?

Hi All, As I'm updating the CLOG entries of the Microglanis, I've synonymized M. cibelae with Microglanis cottoides, based on the Souza-Shibatta et al. (2018) paper, and I'm also deleting occurrences of Cottoides in the lower Uruguay, based on the same paper above which attributed those reports, based on genetic markers to fish more like Microglanis malabarbai.

But there's a stray locality for cottoides out in the Rio Sali. I see no reports of that in the forum (esp. within the Distributions sticky), and I see no reports of collection on GBIF. In fact, GBIF has NO Microglanis out that direction at all.

Does anyone have context for this? If not, I'd like to remove the occurrence of cottoides there. The paper above says genetically, there are no cottoides in the Uruguay basin, but rather they are all spread throughout the coastal drainages.

If I'm making a big mistake here, please stop me. ;-)
I found it:

Luis Fernández & Gladys Gonzo. 2013. Microglanis cottoides (Boulenger, 1891) (Siluriformes: Pseudopimelodidae): Distribution extension to Salí-Dulce River basin, northwestern Argentina. Check List 9(2): XXX-XXX, 2013.

https://checklist.pensoft.net/article/18659/

https://www.researchgate.net/profile/Gl ... 745505.pdf
Abstract: Microglanis cottoides (Boulenger 1891) is a known Paraná-Plata River basin catfish. Its geographic distribution
is herein extended to a new drainage system, the Salí-Dulce River system, northwestern Argentina, which is a separate
drainage from the Paraná-Plata basin.
Well. This proves problematic. :-/ The fish is probably M. malabarbai.

Cheers, Eric
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Re: The catfish distributions sticky

Post by Jools »

That does happen, from time to time a new species means I have to move occurences around. Main thing is the timeline supports this. So, I think you should nuke the occurrence in the Rio Sali?

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Re: The catfish distributions sticky

Post by bekateen »

Will do. Will also add a note to the malabarbai page.

And done.

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Re: The catfish distributions sticky

Post by bekateen »

I see on the Microsynodontis batesii occurrence map the inclusion of the Niger River. This seems highly unlikely and I can't find any reference to a confirmation of M. batesii there. I'm removing the occurrence from the list, but putting this post here in case anyone knows of a confirmation for this detail.

Likewise, I'm suspicious of the occurrence of M. batesii in the Congo. According to HH's 2004 paper, Microsynodontis christyi is from the Congo and previously it had been considered a synonym of M. batesii, but now it is considered a valid species unto itself.

HH's paper further states that M. batesii is restricted to Cameroon and Gabon, and even then might represent more than one species due to its variability and broad distribution (meaning its distribution might actually be even more narrow).

Finally, I find only a few (older) collections of M. batesii in the Congo on GBIF; I wonder if their identities are based on the synonymization of M. christyi to M. batesii. Therefore, as with the Niger River occurrence for M. batesii, I'm removing the Congo as an occurrence location in the CLOG for M. batesii, but noting it here in case the action needs to be reversed at a later date.

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Re: The catfish distributions sticky

Post by Jools »

Makes sense. M. polli and M. batesi are mixed up in the literature of old.


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Hemiancistrus’ punctulatus in the lower Yaguarón

Post by bekateen »

Serra, W.S., Scarabino, F., Wlodek, S., Furtado, G. & A. Balao. (2020). First record of ‘Hemiancistrus’ punctulatus Cardozo & Malabarba, 1999 for Uruguay (Siluriformes: Loricariidae). Boletín de la Sociedad Zoológica del Uruguay, 29(1): 28-34.

https://doi.org/10.26462/29.1.5
https://journal.szu.org.uy/index.php/Bo ... e/view/112
Abstract
A recent expedition to lower Yaguarón river basin in northeastern Uruguay, revealed the presence of the loricariid catfish Hemiancistrus punctulatus Cardozo & Malabarba, 1999, which represents the first record of this species for the country. We propose it as an endangered species for Uruguay considering its restricted distribution.
ABSTRACT
Analyses of collections and recently captured specimens in an expedition to lower Yaguarón river basinin northeastern Uruguay, revealed the presence of theloricariid catfish ‘Hemiancistrus’ punctulatus Cardozo & Malabarba,1999, which represents the first record of thisspecies for the country. We propose it as an endangered species for Uruguay considering its restricted distribution. Differences with ‘Hemiancistrus’ megalopteryx are discussed
  • Key-Words: ‘Hemiancistrus’; Uruguay; first record; conservation priority.
Moderator's note: Oddly, this journal displays two different abstracts, depending on whether you're looking on the journal page (shorter abstract) or at the actual article (longer abstract).
Attachments
Hemiancistrus punctulatus map.png
Hemiancistrus punctulatus.png
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Micromyzon akamai in the Rio Curaray, Ecuador

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Chuctaya, J., Encalada, A. C., Barragán, K. S., Torres, M. L., Rojas, K. E., Ochoa‐Herrera, V., & Carvalho, T. P. (2020). New Ecuadorian records of the eyeless banjo catfish Micromyzon akamai (Siluriformes: Aspredinidae) expand the species range and reveal intraspecific morphological variation. Journal of Fish Biology.

https://doi.org/10.1111/jfb.14630
https://onlinelibrary.wiley.com/doi/abs ... /jfb.14630
PDF: https://onlinelibrary.wiley.com/doi/epd ... /jfb.14630
Abstract
Two specimens of Micromyzon akamai, an eyeless and miniaturized species previously known only from deep channels of the eastern Amazon Basin in Brazil, are reported from the Curaray River, a tributary of the Napo River in Ecuador. The new specimens are the first records of Micromyzon in headwaters of the Amazon River and the first records of M. akamai outside Brazil. External morphological characters and a phylogenetic analysis of the cytochrome c oxidase I (COI) gene support identification of the new specimens as Micromyzon akamai. However, the new specimens also indicate that some features previously hypothesized to be apomorphic for Micromyzon akamai are intraspecifically variable.
  • KEYWORDS: Cytochrome c oxidase I (COI), freshwater fish, Napo, taxonomy, deep-channel fishes, Neotropical
Attachments
Figure 1. (A) Distribution of Micromyzon akamai in the Amazon basin. Black circles:<br />Distribution according to Carvalho et al., 2016. Red star: New record in Curaray River.<br />(B, C) MECN-DP 4371, 12.9 mm LS, new record, Curaray River, Napo Basin, Ecuador<br />in dorsal, lateral and ventral. (D) Phylogenetic relationships of Hoplomyzontinae (and<br />outgroups) supported by maximum likelihood (RAXML - GTRGAMMAI) using COI<br />sequences, with the inclusion of Micromyzon akamai collected from the Curaray River<br />(Ecuador), LA=Lower Amazon, MA=Marañon, MDD= Madre de Dios, NA= Napo, and<br />OR=Orinoco. Photos: J. Wingert (B, C)
Figure 1. (A) Distribution of Micromyzon akamai in the Amazon basin. Black circles:
Distribution according to Carvalho et al., 2016. Red star: New record in Curaray River.
(B, C) MECN-DP 4371, 12.9 mm LS, new record, Curaray River, Napo Basin, Ecuador
in dorsal, lateral and ventral. (D) Phylogenetic relationships of Hoplomyzontinae (and
outgroups) supported by maximum likelihood (RAXML - GTRGAMMAI) using COI
sequences, with the inclusion of Micromyzon akamai collected from the Curaray River
(Ecuador), LA=Lower Amazon, MA=Marañon, MDD= Madre de Dios, NA= Napo, and
OR=Orinoco. Photos: J. Wingert (B, C)
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Re: The catfish distributions sticky

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Guillermo E. Terán, Sergio Bogan, Stefan Koerber and Juliano Ferrer. First records for two catfishes from Argentina: Ituglanis australis Datovo & De Pinna, 2014 and Scleronema macanuda Ferrer & Malabarba, 2020 (Siluriformes: Trichomycteridae). Natural History (Third Series), 10 (3): 39-47.

https://fundacionazara.org.ar/img/revis ... _39-47.pdf
Abstract.
Ituglanis australis and Scleronema macanuda are trichomycterid catfishes that inhabit freshwater basins from Pampa grasslands of southern Brazil and Uruguay. The aim of the present contribution is to report for the first time the presence of both species in Argentina. These new records are related to small streams of the Uruguay River basin in Entre Ríos province. Both were identified based on ichthyological collections that were made before they were formally described. With these reports the number of Argentinian trichomycterids is increasing to 42.
  • Key words: Entre Ríos, Trichomycteridae, Pampa grasslands, Ituglanis, Scleronema.
Resumen.
Ituglanis australis y Scleronema macanuda, son bagres tricomictéridos que habitan en las cuencas de la región de Pampa y Pastizales del sur de Brasil y Uruguay. En este trabajo documentamos por primera vez la presencia de estas especies en Argentina. Estos nuevos registros están vinculados a pequeños arroyos que forman parte de la cuenca del río Uruguay en la provincia de Entre Ríos y se lograron identificar gracias a la revisión de colecciones ictiológicas formadas años antes de que estas especies fueran descriptas formalmente. Los dos registros incrementan a 42 el número de especies de tricomictéridos documentados en la Argentina.
  • Palabras clave: Entre Ríos, Trichomycteridae, Pampa y Pastizales, Ituglanis, Scleronema.
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Re: The catfish distributions sticky

Post by bekateen »

Wilson S. Serra, Fabrizio Scarabino, Sabina Wlodek and Stefan Koerber. Confirmation of the presence of Zungaro jahu (Ihering, 1898) for Uruguay (Siluriformes: Pimelodidae) and a review of associated historical records for the country. Natural History (third series), 10 (3): 49-58.

https://fundacionazara.org.ar/img/revis ... _49-58.pdf
Abstract.
Zungaro jahu is a siluriform fish well known from the Paraná river but also recorded from the Argentinean coast of the La Plata river, based on well confirmed and illustrated records. The presence of Z. jahu is confirmed for the Uruguayan territory, based on a single juvenile specimen collected in the La Plata river (Colonia county) in 1966. Other records associated with this species for the country are discussed and corrected. Species of the genera Microglanis and Pseudopimelodus were frequently misidentified in literature and museum records, thus leaving the present record as the first confirmed one. It is recommended to carry out similar reviews all along the putative distribution area of Z. jahu, insisting in the incorporation of potential specimens into biological collections.
  • Key words: La Plata river, freshwater, Paulicea, Zungaro.
Resumen.
Zungaro jahu es un pez siluriforme bien conocido del río Paraná pero también registrado de la costa argentina del Río de la Plata, en base a material bien ilustrado y confirmado. Se confirma la presencia de Z. jahu para el territorio uruguayo, basado en un único ejemplar colectado en el Río de la Plata (Departamento de Colonia) en 1966. Otros registros referidos a esta especie para el país se discuten y corrigen. Especies de los géneros Microglanis y Pseudopimelodus fueron frecuentemente mal identificados en la literatura y en materiales depositados en museos, dejando el presente registro como el primero confirmado. Se recomienda llevar a cabo revisiones similares a lo largo de la supuesta área de distribución of Z. jahu, insistiendo en la incorporación de posibles ejemplares a colecciones biológicas.
  • Palabras clave: Río de la Plata, agua dulce, Paulicea, Zungaro.
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