First record of the freshwater copepod Eucyclops titicacae Kiefer, 1957, new rank (Copepoda, Cyclopoida) in Colombia

Abstract

Abstract:The freshwater cyclopoid copepod Eucyclops titicacae Kiefer, 1957, new rank, was previously known as a subspecies of E. neumani (Pesta, 1927). Hitherto, it was recorded only from Lake Titicaca in Peru and Lake Valencia in Venezuela. This species is here recorded from Laguna Navío Quebrado, La Guajira, northern Colombia. This is the first record of E. titicacae in Colombia and the third locality in which this species has been reported from. We provide comparative data on the morphology of this copepod. The Colombian specimens have the combination of diagnostic features of E. neumani titicacae as reported in both the original description and subsequent taxonomical accounts, including: 1) spinules on caudal rami not reaching halfway the outer margin; 2) caudal rami length/width ratio= 6.0; 3) length/width ratio of third endopodal segment of fourth leg=1.66; 4) inner spine of fifth leg being shorter than the two adjacent setae. The consistent morphologic differences and the isolation of E. neumani titicacae with respect to E. neumani neumani , each related to a different biogeographic subregion in South America, support the notion that these are two separate species, E. neumani and E. titicacae. Considering this interesting addition, the number of species of Eucyclops known from Colombia increases to 8; a key for the identification of these species is also provided. Keywords: continental copepods, taxonomy, freshwater zooplankton, Laguna Navío Quebrado, Colombia, distribution. FUENTES-REINÉS, J. M. & SUÁREZ-MORALES, E.Primer registro del copépodo de agua dulce Eucyclops titicacae Kiefer, 1957, nuevo rango (Copepoda, Cyclopoida) en Colombia. Biota Neotrop. 13(4): http://www. biotaneotropica.org.br/v13n4/pt/abstract?article+bn01613042013Resumen: El copépodo ciclopoide de agua dulce Eucyclops titicacae Kiefer, 1957, nuevo rango, se conocía previamente como una subespecie de E. neumani (Pesta, 1927). Se había registrado solamente en los lagos Titicaca en Perú y Valencia en Venezuela. Esta especie se registra ahora en la Laguna Navío Quebrado, La Guajira, norte de Colombia. Este es el primer reporte de E. titicacae en Colombia y la tercera localidad en cual esta especie ha sido reportada. Se ofrece información comparativa sobre la morfología de este copépodo. Los especímenes de Colombia tiene la combinación de caracteres diagnósticos de E. neumani titicacae como se presentaron en la descripción original y en trabajos taxonómicos subsecuentes, incluyendo: 1) las espínulas de la rama caudal no alcanzan la mitad del margen externo, 2) la relación largo/ancho de la rama caudal = 6.0, 3) la relación longitud/ ancho del tercer segmento endopodal de la cuarta pata = 1.66, 4) la espina interna de la quinta pata es más corta que las dos setas adyacentes. Las consistentes diferencias morfológicas y el aislamiento de E. neumani titicacae con respecto aE. neumani neumani , que se distribuyen en subregiones biogeográficas distintas en América del Sur, apoyan la idea de que se tratan de dos especies separadas, E. neumani y E....

Checklist of Planktonic Copepoda From a Colombian Coastal Lagoon With Record of Halicyclops Exiguus Kiefer

“…The information presented in this paper increase the total number of freeliving cyclopoid copepods reported for Colombia (Gaviria and Aranguren, 2007; to 47 species. With these new records, the number of species belonging to the genera Halicyclops and Eucyclops increase to two and eight, respectively (Fuentes-Reinés and Suárez-Morales, 2013). Up to eight species are new records for La Guajira Department and one for Colombia (see Table 1).…”

Continental copepods (Crustacea: Hexanauplia) of Colombia: revision and additions to the inventory

“…Information about the overall distribution of the freshwater species was extracted from Dussart & Defaye (2002, Defaye & Dussart (2011), and Perbiche-Neves et al (2014). The distribution of planktonic species from brackish water follows Razouls et al (2005Razouls et al ( -2018 and of benthic species of brackish water according to Fuentes-Reinés & Suárez-Morales (2013, Fuentes-Reinés & Gómez (2014), Fuentes-Reinés & Suárez-Morales (2014a, 2014b, Fuentes-Reinés et al (2013b and Gómez et al (2017). Taxonomy follows Walter & Boxshall (2019) (http://www.marinespecies.org/copepoda).…”