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      A new species of Schizopera (Copepoda: Harpacticoida: Miraciidae) from Colombia Translated title: Una nueva especie de Schizopera (Copepoda: Harpacticoida: Miraciidae) de Colombia

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          Abstract

          Objective. The present contribution aims at the description of a new species of the genus Schizopera. Materials and methods. Water samples were collected in littoral areas with mangrove and macrophytes, and in the limnetic zone. Twenty five liters of water were taken. Water samples were filtered with a zooplankton net (45µm) and preserved in 70% ethanol. The filtered samples were concentrated to 100 ml and examined in a Bogorov camera. Copepods were separated. Observations and drawings of S. evelynae sp. nov. were made at a magnification of 1000X. Results. Schizopera evelynae sp. nov. seems to be closely related to S. giselae Jiménez -Álvarez 1988 and to S. pratensis Noodt 1958 based on the armature formula of P1-P4, but can be separated from these two species based on the relative length of P1ENP, length/width ratio of P1ENP2, relative length of the outer proximal and distal spines on P4EXP3, shape of the exopod and relative length of the exopodal setae of the female P5, shape and length/width ratio of the male P2ENP2, and male P5 baseoendopodal lobe:exopod length ratio. A key to the species of Schizopera from America is given. Conclusion. A new species of the genus Schizopera is described. The Colombian material shares most characters with S. giselae and S. pratensis.

          Translated abstract

          Objetivo. Describir una nueva especie del genero Schizopera. Materiales y métodos. Muestras de agua fueron colectadas en áreas del litoral con mangle y macrófitas, y en la zona limnética. Se tomaron 25 L de agua. Las muestras de agua fueron filtradas con una red de zooplancton (45 µm) y preservadas en etanol al 70%. Las muestras filtradas se concentraron a 100 ml y fueron analizadas en una cámara de Bogorov. Los copépodos fueron separados. Se realizaron observaciones y dibujos de S. evelynae sp. nov. a un aumento de 1000X. Resultados. Schizopera evelynae sp. nov. parece estar estrechamente relacionada con S. giselae Jiménez-Álvarez 1988 y con S. pratensis Noodt 1958 basado en la fórmula de la armadura de P1-P4, pero puede ser separado de estas dos especies basado en la longitud relativa de P1ENP, relación longitud / anchura de P1ENP2, la longitud relativa de las espinas proximal y distal externas en P4EXP3, forma del exópodo y la longitud relativa de las setas del exópodo de la P5 de la hembra, la forma y la relación longitud / anchura del P2ENP2 del macho, y la relación entre la longitud del lóbulo baseoendopodal de la P5 y la longitud del exópodo en el macho. Se presenta una clave para las especies del género Schizopera en América. Conclusiones. Se describe una nueva especie para la ciencia del género Schizopera. Los especímenes colombianos comparten la mayoría de los caracteres con S. giselae y S. pratensis.

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          Most cited references36

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          An annotated checklist and keys to the species of Copepoda Harpacticoida (Crustacea)

          J. WELLS (2007)
          A checklist of the approximately 4300 species of Copepoda Harpacticoida is presented. It is prepared according to the opinions of the latest revisers and adopts the phylogenetic system of Seifried (2003). The opportunity is taken to formally propose replacement names for preoccupied taxa (p. 14). Comments are provided on other taxonomic issues. A dichotomous key to families is followed by tabular keys to species within each family.
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            Explosive radiation of the genus Schizopera on a small subterranean island in Western Australia (Copepoda:Harpacticoida): unravelling the cases of cryptic speciation, size differentiation and multiple invasions

            A previously unsurveyed calcrete aquifer in the Yilgarn region of Western Australia revealed an unprecedented diversity of copepods, representing 67% of that previously recorded in this whole region. Especially diverse was the genus Schizopera, with up to four morphospecies per bore and a significant size difference between them. Aims of this study were to: (1) survey the extent of this diversity using morphological and molecular tools; (2) derive a molecular phylogeny based on COI; and (3) investigate whether high diversity is a result of an explosive radiation, repeated colonisations, or both, size differentiation is a result of parallel evolution or different phylogeny, and whether Schizopera is a recent invasion in inland waters. More than 300 samples were analysed and the COI fragment successfully amplified by PCR from 43 specimens. Seven species and one subspecies are described as new, and three possible cryptic species were detected. Reconstructed phylogenies reveal that both explosive radiation and multiple colonisations are responsible for this richness, and that Schizopera is probably a recent invasion in these habitats. No evidence for parallel evolution was found, interspecific size differentiation being a result of different phylogeny. Sister species have parapatric distributions and show niche partitioning in the area of overlap.
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              Copepod evolution

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                Author and article information

                Journal
                mvz
                Revista MVZ Córdoba
                Rev.MVZ Cordoba
                Universidad de Córdoba - Facultad de Medicina Veterinaria y Zootecnia. (Córdoba, Montería, Colombia )
                0122-0268
                1909-0544
                September 2014
                : 19
                : 3
                : 4199-4213
                Affiliations
                [2] Mazatlán Sinaloa orgnameUniversidad Nacional Autónoma de México orgdiv1Instituto de Ciencias del Mar y Limnología orgdiv2Unidad Académica Mazatlán México
                [1] Santa Marta Magdalena orgnameUniversidad del Magdalena orgdiv1Grupo de investigación en Limnología Neotropical Colombia
                Article
                S0122-02682014000300002 S0122-0268(14)01900302
                ae78392b-3cac-4c93-8adb-dd0ab03e9fbb

                This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

                History
                : March 2014
                : June 2014
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 29, Pages: 15
                Product

                SciELO Colombia

                Categories
                Originals

                new species,lagoon,taxonomy,harpacticoida,distribution,Copepoda,nueva especie,laguna,taxonomía,distribución

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