A New Small Barb (Cyprininae: Smiliogastrini) from the Louesse, Lekoumou (Upper Niari Basin), and Djoulou (Upper Ogowe Basin) Rivers in the Republic of Congo, West-Central Africa

Mamonékéné, Victor; Zamba, Armel Ibala

doi:10.1206/3917.1

Cited by 7 publications

(8 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These three populations are from the Little Scarcies, Konkouré River, and the Senegal and Gambie river drainages (Figure ). The divergences of cytb among these populations (4.6%–7.1%) are consistent with mitochondrial divergences among closely related Enteromius species (Mamonekene, Zamba, & Stiassny, ; Schmidt et al, ; Van Ginneken et al, ). As discussed when elevating E. amboseli from the widespread East African E. apleurogramma , much of the reported interspecific divergence in mitochondrial markers among African barb species is likely overestimated by underestimating the diversity within wide‐ranging species complexes, or by recognizing broadly defined morphological species that contain distinct and distantly related taxa (e.g., E. paludinosus , Schmidt, Bart, & Nyingi, ; Schmidt et al, ).…”

Section: Discussionsupporting

confidence: 80%

Unrecognized and imperilled diversity in an endemic barb (Smiliogastrini, Enteromius) from the Fouta Djallon highlands

et al. 2019

View full text Add to dashboard Cite

The Upper Guinean Forests of Guinea, Sierra Leone and Liberia contain high levels of freshwater biodiversity. The Guinean Range and associated Fouta Djallon highlands separate two biogeographical provinces in the region and served as a refugium during past climatic fluctuations. While many species of freshwater fishes are restricted to one biogeographical province or the other, some are reported to occur on both sides of the divide. Here, we examine the molecular and morphological diversity of an endemic small African barb, Enteromius foutensis, reported to occur in both provinces. This integrative analysis revealed unrecognized diversity and suggests recent, or ongoing, events that facilitated geodispersal and subsequent divergence in the region. The molecular analysis revealed three divergent and well‐supported populations within E. foutensis. Accounting for allometric shape variation allowed us to observe diagnostic morphological differences among the populations. Enteromius foutensis sensu stricto is restricted to the Little Scarcies drainage in Guinea and northern Sierra Leone. Our study revealed two candidate species distinct from E. foutensis. One is likely a narrow endemic restricted to a small area in the Konkouré River basin; the other candidate species inhabits the upper Senegal and Gambie River drainages. How these patterns of diversity compare with other freshwater species from the Fouta Djallon highlands and the conservation status of these candidate species are also discussed.

show abstract

Section: Discussionsupporting

confidence: 80%

Unrecognized and imperilled diversity in an endemic barb (Smiliogastrini, Enteromius) from the Fouta Djallon highlands

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Therefore, we examined a wide set of morphological characters (Suppl. material 1, Table S2), including shape and number of the axial skeleton elements and infraorbital bones as suggested by Mamonekene et al (2018).…”

Section: Morphological Analysesmentioning

confidence: 99%

“…Accordingly, the oldest available name for this group, Enteromius Cope, 1867, was resurrected at the generic level (Yang et al 2015). The decision was criticised (Schmidt and Bart 2015;Stiassny and Sakharova 2016;Schmidt et al 2017) but has been accepted (Schmidt et al 2018;Mamonekene et al 2018;Mipounga et al 2019) based on a summarising review by Hayes and Armbruster (2017) as the first step for taxonomic delimitation of small-sized African smiliogastrin barbs. The phylogenetic trees in Yang et al (2015) and Ren and Mayden (2016) adopted by Hayes and Armbruster (2017) indicate heterogeneity of the genus, which contains at least two putative distinct genera, Clade Enteromius I and Clade Enteromius II of Hayes and Armbruster (2017).…”

Section: Introductionmentioning

confidence: 99%

A new species of Enteromius (Actinopterygii, Cyprinidae, Smiliogastrinae) from the Awash River, Ethiopia, and the re-establishment of E. akakianus

Englmaier¹,

Tesfaye

Bogutskaya³

2020

View full text Add to dashboard Cite

In the present study, populations of small-sized smiliogastrin barbs with a thickened and serrated last simple dorsal-fin ray distributed in the Main Ethiopian Rift were analysed. An integrated approach combining genetic markers and a variety of morphological methods based on a wide set of characters, including osteology and sensory canals, proved to be very productive for taxonomy in this group of fishes. The results showed that Ethiopian Enteromius species with a serrated dorsal-fin ray are distant from the true E. paludinosus (with E. longicauda as a synonym) and the so-called E. paludinosus complex involves several supposedly valid species with two distinct species occurring in the Main Ethiopian Rift area. A new species, Enteromius yardiensissp. nov., is described from the Afar Depression in the north-eastern part of the Northern Main Ethiopian Rift. Enteromius akakianus is resurrected as a valid species including populations from the Central Main Ethiopian Rift (basins of lakes Langano, Ziway, and Awasa). No genetic data were available for E. akakianus from its type locality. Enteromius yardiensissp. nov. is clearly distant from E. akakianus from the Central Main Ethiopian Rift by CO1 and cytb barcodes: pairwise distances between the new species and the Ethiopian congeners were 5.4 % to 11.0 %. Morphologically, the new species most clearly differs from all examined Ethiopian congeners by three specialisations which are unique in the group: the absence of the anterior barbel, the absence of the medial branch of the supraorbital sensory canal, and few, 1–3, commonly two, scale rows between the lateral line and the anus.

show abstract

“…() included all elements in the series, typically including one or two scales posterior to the structural base of the caudal fin. We also report scale lateral‐line scale counts to the point of caudal flexion, as many recent Enteromius descriptions (Mamonekene et al, ) use that version of the count. Transverse scale counts include the middorsal and midventral scales as a half element, which follows most revisionary or synthetic treatments of Enteromius (De Werdt & Teugels, ; Lévéque et al, ; Lévêque et al, ), though it is worth noting that Armbruster's () general recommendations for cyprinids omit the half element at the midline.…”

Section: Methodsmentioning

confidence: 99%

“…A literature search for Enteromius known from West and Central Africa was carried out, beginning with the most comprehensive systematic references for those regions (Lévéque et al, ; Stiassny et al, ). The search then expanded to other more recent publications dealing with Enteromius in these parts of Africa (Dankwa et al, ; Mamonekene & Stiassny, ; Mamonekene et al, ; Munene & Stiassny, ). As far as was possible, references dealing with other regions in Africa (Eccles, ; Poll, ; Skelton, ) were consulted as were the online databases Fishbase (Froese & Pauly, ) and Eschmeyer's Catalog of Fishes (Eschmeyer, Fricke & Van der Laan, 2018).…”

Section: Methodsmentioning

confidence: 99%

Enteromius pinnimaculatus sp. nov. (Cypriniformes: Cyprinidae) from southern Gabon

Mipounga¹,

Cutler

Adam

et al. 2019

Journal of Fish Biology

View full text Add to dashboard Cite

We present and describe a new species of Enteromius, adding to the 16 species of Enteromius currently recorded from Gabon, West Africa. This new species is distinguished from all other Gabonese Enteromius by the presence of several distinct spots on the dorsal fin in combination with three or four round spots on the flanks. In Africa, it is superficially similar to Enteromius walkeri and with which it shares an unusual allometry in that the proportional length of the barbels decreases as the fish grows. Nevertheless, one can distinguish these species by vertebral number, maximum standard length, the length of the anterior barbels, the length of the caudal peduncle and in most specimens, the number of lateral-line and circumpeduncular scales. These two species also inhabit widely separated drainages, with E. walkeri occurring in coastal drainages of Ghana including the Pra and Ankobra Rivers and the new species occurring in tributaries of the Louetsi and Bibaka Rivers of Gabon, which are part of the Ogowe and Nyanga drainages, respectively. Despite extensive collections in those drainages the new species is known from only two localities, suggesting the importance of conservation of its known habitat.

show abstract

A New Small Barb (Cyprininae: Smiliogastrini) from the Louesse, Lekoumou (Upper Niari Basin), and Djoulou (Upper Ogowe Basin) Rivers in the Republic of Congo, West-Central Africa

Cited by 7 publications

References 19 publications

Unrecognized and imperilled diversity in an endemic barb (Smiliogastrini, Enteromius) from the Fouta Djallon highlands

Unrecognized and imperilled diversity in an endemic barb (Smiliogastrini, Enteromius) from the Fouta Djallon highlands

A new species of Enteromius (Actinopterygii, Cyprinidae, Smiliogastrinae) from the Awash River, Ethiopia, and the re-establishment of E. akakianus

Enteromius pinnimaculatus sp. nov. (Cypriniformes: Cyprinidae) from southern Gabon

Contact Info

Product

Resources

About