Distribution patterns of the American species of the freshwater genus Eucyclops (Copepoda: Cyclopoida)

Mercado-Salas, Nancy F.; Pozo, Carmen; Morrone, Juan J.; Suárez‐Morales, Eduardo

doi:10.1163/193724012x626502

Cited by 26 publications

(22 citation statements)

References 38 publications

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“…The latter water body is relatively near the new locality in Colombia. Hence, this finding is consistent with the Western Amazonian (WA) biogeographic track defined for this subspecies (Mercado-Salas et al 2012) and expands this track toward the northern Colombian coast. This WA track also connects two important Neotropical basins, the Amazon and the Orinoco; a recent survey provides evidence showing active gene flow and dispersal between these two large basins through the Casiquiare corridor (Willis et al 2010).…”

Section: Distributionsupporting

confidence: 87%

“…This biogeographic province, the Chacoan subregion (Urtubey et al 2010) is independent from that related to the known distributional pattern of E. n. neumani, a species known from Argentina, Paraguay, Uruguay, and central and southern Brazil (Reid 1985, Mercado-Salas et al 2012. This is an additional evidence to support the notion that these subspecies are likely to represent independent species, E. neumani (Pesta, 1927), and E. titicacae Kiefer, 1957.…”

Section: Distributionmentioning

confidence: 78%

“…According to the biogeographic analysis by Mercado-Salas et al (2012), the track of E. n. titicacae runs from Lake Titicaca-Peru to Lake Valencia-Venezuela. The latter water body is relatively near the new locality in Colombia.…”

Section: Distributionmentioning

confidence: 99%

“…The freshwater cyclopoid copepod Eucyclops neumani (Pesta, 1927), described originally from Argentina, is known to contain two subspecies, E. neumani neumani (Pesta, 1927), distributed mainly in Argentina, Paraguay and Brazil (Reid 1985, Dussart & Frutos 1986, Silva 2008, Mercado-Salas et al 2012) and E. neumani titicacae Kiefer 1957, originally described from Lake Titicaca (Peru and Bolivia) (Kiefer 1957). According to Alekseev & Defaye (2011), E. neumani titicacae is a member of the E. serrulatus species group, comprising species with 12-segmented antennules bearing a smooth hyaline membrane on the three distal segments, caudal ramus of moderate length (3.5-7.0 length/width ratio), a strong inner spine of leg 5, and one or two groups of hairs on the distal margin of the antennary basipodite, among other characters.…”

Section: Introductionmentioning

confidence: 99%

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

Fuentes-Reinés

Suárez‐Morales

2013

Biota Neotrop.

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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....

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Section: Distributionsupporting

confidence: 87%

Section: Distributionmentioning

confidence: 78%

Section: Distributionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Fuentes-Reinés

Suárez‐Morales

2013

Biota Neotrop.

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“…Boxshall and Defaye, 2008;Camacho and Valdecasas, 2008;Elmoor-Loureiro, 1997;Forró et al, 2008;Gaviria, 1989Gaviria, , 1994Grosso, 1991;Grosso and Peralta, 2002;Löffler, 1981;Lopretto and Morrone, 1998;Mercado-Salas et al, 2012;Suárez-Morales et al, 1996;Noodt, 1965;Peralta and Grosso, 2009;Reid, 1988Reid, , 1998Young, 1998; beside others), however exhaustive species descriptions and ecological remarks can found in the original descriptions.…”

Section: Hyporheic Zone In Neotropical Regionmentioning

confidence: 99%

The hyporheic zone and its functions: revision and research status in Neotropical regions

2015

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The hyporheic zone (HZ), as the connecting ecotone between surface-and groundwater, is functionally part of both fluvial and groundwater ecosystems. Its hydrological, chemical, biological and metabolic features are specific of this zone, not belonging truly neither to surface-nor to groundwater. Exchanges of water, nutrients, and organic matter occur in response to variations in discharge and bed topography and porosity. Dynamic gradients exist at all scales and vary temporally. Across all scales, the functional significance of the HZ relates to its activity and connection with the surface stream. The HZ is a relatively rich environment and almost all invertebrate groups have colonized this habitat. This fauna, so-called hyporheos, is composed of species typical from interstitial environment, and also of benthic epigean and phreatic species. The hyporheic microbiocenose consists in bacteria, archaea, protozoa and fungi. The HZ provides several ecosystem services, playing a pivotal role in mediating exchange processes, including both matter and energy, between surface and subterranean ecosystems, functioning as regulator of water flow, benthic invertebrates refuge and place of storage, source and transformation of organic matter. The hyporheic zone is one of the most threatened aquatic environments, being strongly influenced by human activities, and the least protected by legislation worldwide. Its maintenance and conservation is compelling in order to preserve the ecological interconnectivity among the three spatial dimensions of the aquatic environment. Although several researchers addressed the importance of the hyporheic zone early, and most contemporary stream ecosystem models explicitly include it, very little is known about the HZ of Neotropical regions. From a biological standpoint, hyporheos fauna in Neotropical regions are still largely underestimated. This review focuses on a brief presentation of the hyporheic zone and its functions and significance as an ecotone. We also highlighted the key aspects considering also the current status of research in Neotropical regions.Keywords: Enterobacteriaceae, groundwater, meiofauna, macroinvertebrates, water exchange. A zona hiporréica e as suas funções: revisão e estado da arte da pesquisa na região neotropical ResumoA zona hiporréica, como ecótono de ligação entre a superfície e as águas subterrâneas, é parte funcional seja dos ecossistemas fluviais seja das águas subterrâneas. As características hidrológicas, as características químicas, biológicas e metabólicas são específicas desta zona, não pertencendo verdadeiramente nem a superfície nem às águas subterrâneas. Trocas de água, nutrientes e matéria orgânica ocorrem em resposta a variações na descarga, topografia do álveo e porosidade. Gradientes dinâmicos existem em todas as escalas e variam temporalmente. Em todas as escalas, o significado funcional da zona hyporheic relaciona-se com a sua conexão e atividades com a água superficial. O HZ é um ambiente relativamente rico e quase todos os grupos de ...

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Biogeographic Regionalization of the Mexican Transition Zone

Morrone

2020

The Mexican Transition Zone

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Distribution patterns of the American species of the freshwater genus Eucyclops (Copepoda: Cyclopoida)

Cited by 26 publications

References 38 publications

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

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

The hyporheic zone and its functions: revision and research status in Neotropical regions

Biogeographic Regionalization of the Mexican Transition Zone

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