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Redalyc.Descripción De Thorichthys Panchovillai Sp. N., Una Nueva

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Redalyc.Descripción De Thorichthys Panchovillai Sp. N., Una Nueva Revista Peruana de Biología ISSN: 1561-0837 [email protected] Universidad Nacional Mayor de San Marcos Perú Del Moral-Flores, Luis Fernando; López-Segovia, Eduardo; Hernández-Arellano, Tao Descripción de Thorichthys panchovillai sp. n., una nueva especie de cíclido (Actinopterygii: Cichlidae) de la cuenca del Río Coatzacoalcos, México Revista Peruana de Biología, vol. 24, núm. 1, 2017, pp. 3-10 Universidad Nacional Mayor de San Marcos Lima, Perú Disponible en: http://www.redalyc.org/articulo.oa?id=195050541001 Cómo citar el artículo Número completo Sistema de Información Científica Más información del artículo Red de Revistas Científicas de América Latina, el Caribe, España y Portugal Página de la revista en redalyc.org Proyecto académico sin fines de lucro, desarrollado bajo la iniciativa de acceso abierto Revista peruana de biología 24(1): 003 - 010 (2017) ISSN-L 1561-0837 THORICHTHYS PANCHOVILLAI sp. n., una nueva especie de cíclido de la cuenca del Río Coatzacoalcos, México doi: http://dx.doi.org/10.15381/rpb.v24i1.13104 Facultad de Ciencias Biológicas UNMSM TRABAJOS ORIGINALES Descripción de Thorichthys panchovillai sp. n., una nueva especie de cíclido (Actinopterygii: Cichlidae) de la cuenca del Río Coatzacoalcos, México Description of Thorichthys panchovillai sp. n., a new species of cichlid (Actinopterygii: Cichlidae) from the River Coatzacoalcos Basin, Mexico Luis Fernando Del Moral-Flores*, Eduardo López-Segovia, Tao Hernández-Arellano Universidad Nacional Autónoma de México (UNAM), Laboratorio de Zoología, Facultad de Estudios Superiores Iztacala. Av. de los Barrios No. 1, Los Reyes Iztacala, 54090 Tlalnepantla, Estado de México, México. *Autor de correspondencia Email Luis Fernando Del Moral-Flores: [email protected] Email Eduardo López-Segovia: [email protected] Email Tao Hernández-Arellano: [email protected] Resumen Thorichthys panchovillai, nueva especie, es descrita de los tributarios de la cuenca del Río Coatzacoalcos, México. La especie es diagnosticada por un conjunto de caracteres: radios de la aleta dorsal XVI, 8 – 9; ra- dios de la aleta anal VII, 6 – 7; radios de la aleta pectoral, I, 11 – 12; branquiespinas totales en el primer arco branquial 11 – 12; mancha del subopérculo presente pero débilmente intensificada, en especial presenta un marcado dimorfismo sexual único y que le distingue del resto de sus congéneres: en la hembra se presenta una mancha negra entre la quinta y sexta espina dorsal. Palabras clave: Cichliformes; ictiología; Neotrópico; sistemática; taxonomía; agua dulce; nueva especie. Abstract Thorichthys panchovillai, new species, is described, from distinctive of the tributaries of the River Coatzacoalcos basin, Mexico. The new species is diagnosed by a set of characters: dorsal fin rays XVI, 8 – 9; anal fin rays VII, 6 – 7; pectoral fin rays, I, 11 – 12; total gill-rakers on the first branchial cleft 11 – 12; subopercular stain present although weakly intensified, it exposes a notable sexual dimorphism that distinguishes it from others: the female possess a black blotch between the fifth and sixth dorsal spine. Keywords: Cichliformes; Ichthyology; Neotropics; Systematic; Taxonomy; freshwater; new species. Publicación registrada en Zoobank/ZooBank article registered: LSID urn:lsid:zoobank.org:pub:6B8CE434-0C49-4AB6-9610-EC7B1EFF37C7 Acto nomenclatural/nomenclatural act: Thorichthys panchovillai Moral-Flores, López-Segovia & Hernández-Arellano, 2017 LSID urn:lsid:zoobank.org:act:7009AEAB-4B4B-409C-8125-F53B2E02DF48 Citación: Información sobre los autores: Del Moral-Flores L.F., E. López-Segovia, T. Arellano-Hernández. 2017. LFdMF, ELS y TAH realizaron el trabajo de campo, análisis y mediciones Descripción de Thorichthys panchovillai sp. n., una nueva especie de de ejemplares. LFdMF realizó la edición del material gráfico, análisis y cíclido (Actinopterygii: Cichlidae) de la cuenca del Río Coatzacoalcos, búsqueda de los especímenes para la comparación taxonómica, y realizó México. Revista peruana de biología 24(1): 003 - 010 (Abril 2017). doi: la descripción de la especie nueva. ELS y TAH intervinieron en el proceso http://dx.doi.org/10.15381/rpb.v24i1.13104 curatorial y toma de fotografías. ELS, realizó la transparentación de ejemplares. Todos los autores participaron en la redacción del artículo. Los autores no incurren en conflictos de intereses. Presentado: 23/08/2016 Aceptado: 15/02/2017 Publicado online: 20/04/2017 Journal home page: http://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/index © Los autores. Este artículo es publicado por la Revista Peruana de Biología de la Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos. Este es un artículo de acceso abierto, distribuido bajo los términos de la Licencia Creative Commons Atribución-NoComercial-CompartirIgual 4.0 Internacional.(http://creativecommons.org/licenses/by-nc-sa/4.0/), que permite el uso no comercial, distribución y reproducción en cualquier medio, siempre que la obra original sea debidamente citadas. Para uso comercial, por favor póngase en contacto con [email protected]. Rev. peru. biol. 24(1): 003 - 010 (April 2017) 3 Del Moral-Flores et al. Introducción hasta la última escama con poro de la línea superior, a la altura El género Thorichthys fue descrito por Meek (1904: 222) de esta última escama siguió el conteo en la línea inferior hasta con Thorichthys ellioti Meek 1904 (sinónimo de T. maculi- el final del pedúnculo caudal. Las vértebras fueron contabilizadas pinnis) como especie tipo. En general, son cíclidos de tamaño sobre organismos diafanizados (KOH al 4%) y teñidos (Rojo pequeño (< 170 mm de SL), territoriales, de colores brillantes de Alizarina al 0.01%) (modificación de Wassersug 1976 ). Las que se distribuyen en la vertiente Atlántica de Centroamérica: medidas corporales se expresan como porcentaje de la longitud desde el centro de Veracruz, México, al sur de la cuenca del Río estándar (SL). La comparación y evaluación taxonómica de la Montagua en Guatemala y Honduras (Miller & Taylor 1984). nueva especie y sus congéneres se realizó contrastando las descrip- Se caracterizan y distinguen de otros géneros por: ausencia de ciones originales de las especies válidas, sinónimos y enmiendas escamas en la base de la región blanda de las aletas dorsal y anal; taxonómicas (Meek 1904, Regan 1905, Miller & Nelson 1961, aleta caudal lunada o truncada, en adultos los lóbulos pueden ser Rivas 1962, Miller & Taylor 1984). filamentosos; el extremo posterior de la aleta pectoral sobrepasa Los especímenes están depositados en las siguientes institu- el origen de la aleta anal; boca terminal, región preorbital alta y ciones: Colección Nacional de Peces, Instituto de Biología de la con marcado perfil angular; presencia de ocho poros sensoriales Universidad Nacional Autónoma de México (CNPE-UNAM); desarrollados entre el mentón y el ángulo preopercular, de los Colección Ictiológica de la Facultad de Estudios Superiores cuales cinco corresponden a la región mandibular; por lo general Iztacala (CIFI), UNAM; Colección de Peces, Universidad Mi- tienen 12 vértebras precaudales y mancha subopercular en todas choacana de San Nicolás de Hidalgo, Morelia (CPUM). las especies (a excepción de T. callolepis) del género (ambos sexos) (Miller & Nelson 1961, Miller & Taylor 1984). Resultados En la actualidad el género Thorichthys se encuentra represen- Thorichthys panchovillai sp. n. tado por ocho especies válidas: T. affinis (Günther 1862) de la vertiente del Atlántico, del Río Hondo, Quintana Roo, hasta (Fig. 1-5, Tabla 1-2) Belice y Guatemala; T. aureus (Günther 1862) de la vertiente Cichlosoma aureum (no Günther 1862): Regan 1905, en parte: atlántica de los ríos de Belice a Honduras; T. callolepis (Regan 321; Regan 1906-1908, en parte: 26. Cichlasoma aureum (no 1904) de la vertiente del Atlántico, cabecera y tributarios su- Günther 1862): Álvarez 1950, en parte: 120. Miller y Nelson 1961, periores del Río Coatzacoalcos; T. helleri (Steindachner 1864) en parte: 2, Tabl. 1-2, Pl. 1. Thorichthys aureus (no Günther). de la vertiente del Atlántico, del Río Tonalá hasta Guatemala; Meek (1905: 245). Cichlasoma (Thorichthys) sp. c.f. aureum (no Günther 1862): Conkel 1997, en parte: 60. Thorichthys helleri T. maculipinnis (Steindachner 1864) de la vertiente atlántica, (Steindachner 1864): Kullander 2003, en parte: 644. Cichlasoma del Río Chachalacas al Papaloapan; T. meeki Brind 1918 de la ellioti (no Meek 1904): Espinosa-Pérez et al. 1993, en parte: 66. vertiente Atlántica del Río Tonalá, pasando por Belice hasta el Thorichthys ellioti (no Meek 1904): Miller 2009, en parte: 413. Petén, Guatemala; T. pasionis (Rivas 1962) vertiente atlántica Thorichthys sp. aff.maculipinnis Říčan et. al. 2016. de la cuenca del Río Grijalva-Usumacinta; y T. socolofi (Miller Holotipo.- CIFI-501, macho adulto, 79.79 mm SL, colec- & Taylor 1984) vertiente atlántica, en tributarios superiores de tado en el Río Almoloya, cerca del poblado de Guivisia, cuenca los ríos Grijalva y Usumacinta (Kullander 2003, McMahan et al. superior del Río Coatzacoalcos, Oaxaca, México (16°57'4.33"N 2015). Sin embargo existe al menos una especie que permanece – 94°56'58.23"W), 11 de julio de 2016, por F. Del Moral. sin ser descrita, a la cual los acuaristas han denominado Thori- chthys sp. “Mixteco” o también Thorichthys sp. “Coatzacoalcos” Paratipos.- 20 especímenes. CIFI-502, 1 hembra adulta, (Artigas-Azas 2011). Esta especie es propia de la cuenca del Río 47.83 mm SL, colectada en el Río Petapa, cerca del poblado “El Coatzacoalcos,
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