Discovery of African roots for the Mesoamerican Chiapas catfish, Lacantunia enigmatica, requires an ancient intercontinental passage

Lundberg, John G.; Sullivan, John P.; Rodiles‐Hernández, Rocío; Hendrickson, Dean A.

doi:10.1635/0097-3157(2007)156[39:doarft]2.0.co;2

Cited by 76 publications

(103 citation statements)

References 66 publications

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“…The discovery of new freshwater taxa is significant and could change our understanding of continental ichthyofauna (Lundberg et al, 2007). Examples of this in the area are the endemic 'Chiapas catfish' Lacantunia (Raven & Axelrod, 1979;Savage, 1982).…”

Section: Discussionmentioning

confidence: 99%

New species of Eugerres from the Usumacinta Province, México and Guatemala with a redescription of E. mexicanus (Steindachner, 1863) (Teleostei: Gerreidae)

Acosta

Rodiles‐Hernández

2013

Neotrop. ichthyol.

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Eugerres castroaguirrei, new species is described from the río Grijalva-Usumacinta basin of southeastern Mexico and northern Guatemala. Eugerres castroaguirrei and E. mexicanus are distinguishable from their marine estuarine congeners by the dorsalfin origin posterior to the insertion of the pectoral and pelvic fins, a shorter and broad based supraoccipital crest, and a distinct geographic distribution restricted to freshwater habitats. Eugerres castroaguirrei differs from E. mexicanus by diagnostic characters of the body skeleton: anterior process of supraoccipital convex, infraorbital 1 with foramen, premaxillary ascending process developed with margins curved, pharyngeal plate granular and not serially arranged, and dorsal and anal fin-rays reduced. Likewise, E. castroaguirrei is characterized by an oblong and laterally thicker body (37.6-58.5% HL); greater body depth (33.8-42.1% SL), and eye diameter (23.3-31.6% HL); in addition to 16 significant morphometric characters: length of the second dorsal-fin spine 23.2-34.2% SL; depressed second dorsal-fin spine (extending to base of third to fourth dorsal-fin rays); length of second anal-fin spine 11.1-20.6% SL, depressed second anal-fin spine extending to the base of third to fourth anal-fin rays not reaching the distal point of last anal-fin ray; pelvic-fin spine length 49.7-65.0% in the first pelvic-fin ray length.Eugerres castroaguirrei, es descrita como especie nueva de la cuenca del sistema de ríos Grijalva-Usumacinta, en el sureste de México y norte de Guatemala. Eugerres castroaguirrei y E. mexicanus se distinguen de sus congéneres marino estuarinos por el origen de su aleta dorsal que es posterior a la inserción de las aletas pectorales y pélvicas, así como por su cresta supraoccipital de longitud corta y base amplia, además de una distribución restringida a ambientes dulceacuícolas. Eugerres castroaguirrei se distingue de E. mexicanus mediante caracteres óseos diagnósticos como: proceso anterior del supraoccipital convexo, presencia de un foramen en el infraorbital 1, proceso ascendente del premaxilar desarrollado y con márgenes curvos, las placas faríngeas con dientes granulares desarreglados y los soportes de las aletas dorsal y anal reducidos. Asimismo, E. castroaguirrei se caracteriza por tener un cuerpo alargado y lateralmente comprimido cuyo grosor representa 37.6-58.5% de la longitud cefálica [LC]; la altura del cuerpo comprendida entre 33.8-42.1% de la longitud patrón [LP] y el diámetro ocular 23.3-31.6 % de la LC; además de 16 caracteres de tipo morfométrico: longitud de la segunda espina dorsal que representa 23.2-34.2% de la LP; segunda espina dorsal que cuando esta plegada se extiende hasta la base del tercer y cuarto radio dorsal; longitud de la segunda espina anal que comprende 11.1-20.6% de la LP; segunda espina anal que plegada se extiende hasta la base del tercer y cuarto radio anal, aunque no alcanza la porción distal del último radio anal; y la longitud de la espina de la aleta pélvica que comprende 49.7-65.0% de la longitud del prime...

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Section: Discussionmentioning

confidence: 99%

New species of Eugerres from the Usumacinta Province, México and Guatemala with a redescription of E. mexicanus (Steindachner, 1863) (Teleostei: Gerreidae)

Acosta

Rodiles‐Hernández

2013

Neotrop. ichthyol.

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“…As siluriforms are considered the original hosts of Rhabdochona spp. (Moravec, 2010), the calibration point is taken to be 140 mya (Ferraris, 2007;Lundberg et al, 2007).…”

Section: Definition Of Biological Terms Employedmentioning

confidence: 99%

“…An emerging pattern of phylogenetic and historical biogeographical relationships between species of Africa and Southern Mexico is becoming apparent, including a diverse array of coexisting floristic and faunal assemblages. Those assemblages appear to have originated in other parts of the world, and exhibit extralimital affinities and origins (Lundberg et al, 2007). For example, the freshwater siluriform fish, Lacantunia enigmatica Rodiles-Hernández, Hendrickson, Lundberg & Humphries is endemic to Southern Mexico but is morphologically and molecularly related to the claroteids of Africa but to no other siluriform fish in North America (Lundberg et al, 2007).…”

Section: The Historical Biogeography Of Rhabdochona Species: An Overviewmentioning

confidence: 99%

“…Those assemblages appear to have originated in other parts of the world, and exhibit extralimital affinities and origins (Lundberg et al, 2007). For example, the freshwater siluriform fish, Lacantunia enigmatica Rodiles-Hernández, Hendrickson, Lundberg & Humphries is endemic to Southern Mexico but is morphologically and molecularly related to the claroteids of Africa but to no other siluriform fish in North America (Lundberg et al, 2007). This distribution pattern has been recovered in phylogenies of Upper Jurassic, Cretaceous and Lower Palaeocene freshwater and marine fossil teleosts (Forey, 2010) and it seems not to be uncommon among other fossil faunas.…”

Section: The Historical Biogeography Of Rhabdochona Species: An Overviewmentioning

confidence: 99%

“…This distribution pattern has been recovered in phylogenies of Upper Jurassic, Cretaceous and Lower Palaeocene freshwater and marine fossil teleosts (Forey, 2010) and it seems not to be uncommon among other fossil faunas. These areas were probably not contiguous during the geological periods mentioned, but likely were passageways when environmental conditions favoured dispersal (Lundberg et al, 2007).…”

Section: The Historical Biogeography Of Rhabdochona Species: An Overviewmentioning

confidence: 99%

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Discovery of African roots for the Mesoamerican Chiapas catfish, Lacantunia enigmatica, requires an ancient intercontinental passage

Cited by 76 publications

References 66 publications

New species of Eugerres from the Usumacinta Province, México and Guatemala with a redescription of E. mexicanus (Steindachner, 1863) (Teleostei: Gerreidae)

New species of Eugerres from the Usumacinta Province, México and Guatemala with a redescription of E. mexicanus (Steindachner, 1863) (Teleostei: Gerreidae)

Biogeographic Hierarchical Levels and Parasite Speciation

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