A new species of <i>Hyphessobrycon</i> Durbin (Characiformes: Characidae) from the western Amazon basin in Colombia and Peru

García–Alzate, Carlos A.; Lima, Flávio C. T.; Taphorn, Donald C.; Mojica, José Iván; Urbano-Bonilla, Alexander; Teixeira, Tarso Felipe

doi:10.1111/jfb.14319

Cited by 4 publications

(1 citation statement)

References 18 publications

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“…The characoid genus Hyphessobrycon Durbin 1908 (Characidae: Stethaprioninae) is a representative example of this taxonomic uncertainty. This genus is widely distributed from southern Mexico to Mar Chiquita Lagoon in Buenos Aires, Argentina and includes more than 160 valid species [15][16][17][18][19][20][21] that represent 24% of the species in the hyperdiverse subfamily Stethaprioninae [21]. The majority of Hyphessobrycon species (~95%) are distributed east of the Andes and are hereafter referred to as cis-Andean species.…”

Section: Introductionmentioning

confidence: 99%

Phylogenomics of trans-Andean tetras of the genus Hyphessobrycon Durbin 1908 (Stethaprioninae: Characidae) and colonization patterns of Middle America

Elías

McMahan²,

Alda³

et al. 2023

PLoS ONE

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Hyphessobrycon is one of the most species rich and widely distributed genera in the family Characidae, with more than 160 species ranging from Veracruz, Mexico to Mar Chiquita Lagoon in Buenos Aires, Argentina. The majority of Hyphessobrycon diversity shows a cis-Andean distribution; only nine species are trans-Andean including H. compressus (Meek 1908). It is well established that Hyphessobrycon is not monophyletic but it has been suggested that natural groups can be identified within the larger Hyphessobrycon species group. In this study, we tested the monophyly of trans-Andean species of Hyphessobrycon and investigated the placement of H. compressus. We inferred the first phylogenomic hypothesis of trans-Andean Hyphessobrycon that includes nearly complete taxonomic sampling (eight of nine valid species) using ultraconserved elements (UCEs). We analyzed 75% (1682 UCEs), 90% (1258 UCEs), and 95% (838 UCEs) complete data matrices, and inferred phylogenomic hypotheses under concatenation and coalescent approaches. In all cases, we recovered the monophyly of trans-Andean Hyphessobrycon inclusive of H. compressus, strong support for three species groups, and evidence of cryptic diversity within the widespread H. compressus and H. condotensis. We used our phylogenomic hypothesis to investigate the biogeographic history of Hyphessobrycon in Middle America. Our ancestral range estimation analysis suggests a single event of cis- to trans-Andean colonization followed by stepwise colonization from the Pacific slope of northwestern South America (Chocó block) to northern Middle America (Maya block). Our work supports the recognition of the trans-Andean species as Hyphessobrycon sensu stricto and provides an evolutionary template to examine morphological characters that will allow us to better understand the diversity of Hyphessobrycon in Middle America.

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Section: Introductionmentioning

confidence: 99%

Phylogenomics of trans-Andean tetras of the genus Hyphessobrycon Durbin 1908 (Stethaprioninae: Characidae) and colonization patterns of Middle America

Elías

McMahan²,

Alda³

et al. 2023

PLoS ONE

View full text Add to dashboard Cite

show abstract

Phylogenomics oftrans-Andean tetras of the genusHyphessobryconDurbin 1908 and colonization patterns of Middle America

Elías

McMahan

Alda

et al. 2022

Preprint

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Hyphessobrycon is one of the most species rich and widely distributed genera in the family Characidae, with more than 160 species ranging from Veracruz, Mexico to Argentina. The majority of the diversity of Hyphessobrycon shows a cis-Andean distribution; only nine species are trans-Andean including H. compressus (Meek 1908). It is well established that Hyphessobrycon is not monophyletic but has been suggested that natural groups can be identified within the larger Hyphessobrycon species group. In this study, we test the monophyly of trans-Andean species of Hyphessobrycon and investigate the placement of H. compressus. We have inferred the first phylogenomic hypothesis of trans-Andean Hyphessobrycon that includes nearly complete taxonomic sampling (eight of nine valid species) using ultraconserved elements (UCEs). We analyzed 75% (1682 UCEs), 90% (1258 UCEs), and 95% (838 UCEs) complete data matrices, and inferred phylogenomic hypotheses under concatenation and coalescent approaches. In all cases, we recovered the monophyly of trans-Andean Hyphessobrycon inclusive of H. compressus, and strong support for three species groups and evidence of cryptic diversity within the widespread H. compressus and H. condotensis. We used our phylogenomic hypothesis to investigate the biogeographic history of Hyphessobrycon in Middle America. Our ancestral range estimation analysis suggests a single event of cis- to trans-Andean colonization followed by stepwise colonization from the Pacific slope of northwestern South America (Chocó block) to northern Middle America (Maya block). Our work supports the recognition of the trans-Andean species as Hyphessobrycon sensu stricto and provides a robust evolutionary template to examine morphological characters that will allow us to better understand the diversity of Hyphessobrycon in Middle America.

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Dispersion of hooks on the anal fins of primary and secondary males in Brycon orbignyanus (Characiformes: Bryconidae): a secondary sexual trait for breeder selection

Bianchini,

Quirino,

Cristan

et al. 2024

Neotrop. ichthyol.

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Brycon orbignyanus exhibits seasonal reproduction where males can be distinguished from females by the roughness present in the anal fin of the specimens that represents a secondary sexual characteristic known as hooks. This study aimed to describe the appearance and morphology of hooks on the anal fin in B. orbignyanus and relate them to the phases of the reproductive cycle of these animals to determine a parameter that can be used for the selection of suitable males for use in induced reproduction. Monthly male specimens of B. orbignyanus of different ages were collected (n = 50 total; n = 10/month) and the specimens were euthanised, biometrically measured, and the testes and anal fins were collected. As sample were processed according to the typical techniques for light microscopy, stereomicroscope, diaphanization and scanning electron microscopy. Except for specimens in the testicular stage of Regenerating, hooks were observed in all other stages of the reproductive cycle in B. orbignyanus males; however, specimens that possess six or more rays with hooks are considered Spawning Capable and can be selected for breeding. No differences were observed in hooks development patterns as related to secondary sexual characteristics among intersex individuals, primary males, or secondary males.

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A new species of Hyphessobrycon Durbin (Characiformes: Characidae) from the western Amazon basin in Colombia and Peru

Cited by 4 publications

References 18 publications

Phylogenomics of trans-Andean tetras of the genus Hyphessobrycon Durbin 1908 (Stethaprioninae: Characidae) and colonization patterns of Middle America

Phylogenomics of trans-Andean tetras of the genus Hyphessobrycon Durbin 1908 (Stethaprioninae: Characidae) and colonization patterns of Middle America

Phylogenomics oftrans-Andean tetras of the genusHyphessobryconDurbin 1908 and colonization patterns of Middle America

Dispersion of hooks on the anal fins of primary and secondary males in Brycon orbignyanus (Characiformes: Bryconidae): a secondary sexual trait for breeder selection

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