Edna Márquez

National University of Colombia | UNAL · Escuela de Biociencias (Medellín)

Pimelodus grosskopfii and Pimelodus yuma, two species endemic to the Magdalena-Cauca basin in Colombia, overlap in the ranges of some of their diagnostic characters, which hampers their correct morphological identification. Aiming to help discriminate these species, this study conducted an integrative analysis using traditional and geometric morpho...

Lucilia eximia (Wiedemann, 1819) (Diptera: Calliphoridae) is a blowfly with medical and forensic importance that shows genetic and color variation, however, these variations have not justified the description of new species. But in forensic entomology an accurate identification of species and subpopulations is crucial. We explored the genetic varia...

The sabaleta, Brycon henni, is a medium-size fish species found in the Andean range of the Magdalena-Cauca river basin in Colombia, where it is a fishery resource. Recruitment of sabaleta has affected construction of dams with unknown consequences on its genetic diversity and structure. Understanding the current genetic architecture in the dam-infl...

The mahogany shoot borer (Hypsipyla grandella) attacks different Meliaceae species and impedes its plantation. Its biology is poorly known, but some results show a preference for Cedrela odorata L. over Swietenia macrophylla King, which could generate intraspecific variations. We studied the effect of these hosts on H. grandella right-forewing size...

Low morphological differentiation among taxa hampers their appropriate identification, basic biological studies and promotion of any conservation effort. Aiming to provide the first insight into the evolution and speciation among north-western South American members of Pimelodus, this study tested the hypothesis that Pimelodus yuma, Pimelodus gross...

Context The kikuyu grass (Cenchrus clandestinus) is native to Africa and is one of the most widely used grasses for forage feeding in dairy regions around the world. Aims To obtain the first set of microsatellite markers for the population genetics study of kikuyu grass, using nextgeneration sequencing technology (Illumina MiSeq). Methods Sixty loc...

Este libro nos pone al día en tres grandes bloques, uno inicial donde se aborda el estado del conocimiento tanto desde la perspectiva biótica como física de la cuenca, la geología, hidrología, sedimentología y su relación con los ecosistemas y la biodiversidad acuática; los peces, su diversidad taxonómica y genética, ecología e historias de vida y...

Introduction: Despite their importance in swimming performance and individual fitness, body shape and size variations in response to water flow velocity remain unknown for most migratory freshwater fishes in the Neotropics. Objective: Test the hypothesis of phenotypic variation in the size and body shape of two species of freshwater fishes that enc...

Este libro nos pone al día en tres grandes bloques, uno inicial donde se aborda el estado del conocimiento tanto desde la perspectiva biótica como física de la cuenca, la geología, hidrología, sedimentología y su relación con los ecosistemas y la biodiversidad acuática; los peces, su diversidad taxonómica y genética, ecología e historias de vida y...

The Neotropical freshwater catfish Pseudopimelodus atricaudus and Pseudopimelodus magnus are two recently discovered species endemic to the Colombian Magdalena-Cauca River basin. In this study, a set of 13 microsatellite loci were developed by using next generation sequence technology to assess the genetic diversity and population structure in P. a...

Pimelodus yuma (formerly Pimelodus blochii) is a freshwater fish, endemic to the Colombian Magdalena-Cauca and Caribbean basins that experiences habitat disturbances resulting from anthropogenic activities. Due to the lack of information about the population genetics of this species, this study developed 14 species-specific microsatellite loci to a...

Neotropical catfishes Ageneiosus pardalis, Pimelodus grosskopfii and Sorubim cuspicaudus are migratory fishes of commercial importance that exhibit decreasing populations due to overfishing and other anthropic interventions. This study used species-specific microsatellite loci to test the hypothesis that threatened fish populations show genetic vul...

The Neotropical catfish genus Pseudoplatystoma comprises eight species of large size, widely distributed in South American basins. The endangered species P. magdaleniatum is endemic to Magdalena basin (Colombia), experiences high fishing pressure and its population genetics is relatively unknown. To study the genetic status and structure of P. magd...

Prochilodus magdalenae is a freshwater fish endemic to the Colombian Magdalena-Cauca and Caribbean hydrographic basins. The genetic structure patterns of populations of different members of Prochilodus and the historic restocking of its depleted natural populations suggest that P. magdalenae exhibits genetic stocks that coexist and co-migrate throu...

The family Pseudopimelodidae is widely distributed in South America and includes 51 described species organized in seven genera. Only two of four species of the genus Pseudopimelodus have been recorded for the trans-Andean basins of Colombia, Pseu- dopimelodus bufonius and P. schultzi, whose similarity in external morphology make their identificati...

Introduction: The freshwater fish Brycon henni (Characiformes: Bryconidae) is endemic to Colombia and currently considered as a “least concern” species according to the International Union for Conservation of Nature (IUCN). Objective: To develop microsatellite markers to examine population genetics in B. henni. Methods: Using a low-coverage seque...

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat. 44(171):622-638, abril-junio de 2020 Estructura poblacional y reproducción de cinco especies ícticas en un embalse neotropical Resumen Aun cuando el conocimiento de la estructura poblacional y los aspectos reproductivos de los peces permite diseñar estrategias adecuadas de manejo, su estudio ha sido escaso en...

Aun cuando el conocimiento de la estructura poblacional y los aspectos reproductivos de los peces permite diseñar estrategias adecuadas de manejo, su estudio ha sido escaso en embalses colombianos generadores de energía. Este estudio evaluó ambos aspectos en los principales recursos pesqueros del embalse Peñol-Guatapé, Antioquia, Colombia, entre 20...

Pseudopimelodus is a Neotropical genus of bumblebee catfish, composed of four valid species occurring in both trans- and cis-Andean rivers of South America. The orogeny of the Andes has led to diversification in the genus Pseudopimelodus in Colombia. This study analyzed partial sequences of mitochondrial cox1 and nuclear rag2 genes to test the hypo...

The Neotropical catfish species Ageneiosus pardalis, Pimelodus grosskopfii, and Sorubim cuspicaudus are important fishery resources in Colombia that show historical declines in their capture. This study used next-generation sequencing with 454 FLX technology (Roche Applied Science) and bioinformatics analysis to develop between 18 and 24 microsatel...

This study aimed to determine the nutritional value of the fatty acids in the freshwater fish Prochilodus magdalenae, Pseudoplatystoma magdaleniatum and Ageneiosus pardalis during dry and wet Neotropical seasons with the view to generate useful information for nutrition and sustainable commercial exploitation. The analysis of fatty acids was perfor...

Bacterial community structure in different tissues of the wild Lobatus gigas (Linnaeus, 1758) from the Caribbean Seaflower Biosphera Reserve Mónica Marcela Higuita-Valencia, Olga Inés Montoya Campuzano, Edna Judith Márquez Fernández, Claudia Ximena Moreno Herrera

The microbial diversity of Lobatus gigas has not been thoroughly studied despite of them is a specie endangered. Knowledge of microbiota may help to improve the conservation and cultivation of this species. The objective of this study was to evaluate the bacterial populationsassociated with the gonad and the gut compartments of the wild endangered...

The Curimatidae family plays an ecological role in the recycling and distribution of nutrients and constitutes a major food source for several commercially important fishes. Curimata mivartii , a member of this family, is considered a short-distance migratory species (≤100 km), categorized by the International Union for Conservation of Nature as a...

The endangered marine gastropod, Lobatus gigas, is an important fishery resource in the Caribbean region. Microbiological and parasitological research of this species have been poorly addressed despite its role in ecological fitness, conservation status and prevention of potential pathogenic infections. This study identified taxonomic groups associ...

The Caribbean king crab Maguimithrax spinosissimus is an important artisanal fisheries resource with a distribution range that includes the Florida Keys and Caribbean Sea islands. We carried out a phylogeographic analysis of M. spinosissimus in one oceanic (Old Providence) and two continental islands (Rosario and Tintipán). We analysed 89 and 49 Co...

The endangered species Strombus gigas is a marine gastropod of significant economic importance through the Greater Caribbean region. In contrast to phenotypic plasticity, the role of genetics on shell variations in S. gigas has not been addressed so far, despite its importance in evolution, management and conservation of this species. This work use...

Abstract The queen conch Strombus gigas is an endangered marine gastropod of significant economic importance across the Greater Caribbean region. This work reports for the first time the complete mitochondrial genome of S. gigas, obtained by FLX 454 pyrosequencing. The mtDNA genome encodes for 13 proteins, 22 tRNAs and 2 ribosomal RNAs. In addition...

The spiny lobster Panulirus argus is an important fishery species in the Western Central Atlantic. Changes in the dispersion range through its life cycle and heterogeneous habitats, suggest that P. argus exhibit phenotypic plasticity. However, the morphometric variation of this species is unknown so far, although this information is relevant in evo...

The spiny lobster Panulirus argus is an important fishery species in the Western Central Atlantic. Changes in the dispersion range through its life cycle and heterogeneous habitats, suggest that P. argus exhibit phenotypic plasticity. However, the morphometric variation of this species is unknown so far, although this information is relevant in evo...

The Neotropical freshwater fish Ichthyoelephas longirostris (Characiformes: prochilodontidae) is a short-distance migratory species endemic to Colombia. This study developed for the first time a set of 24 polymorphic microsatellite loci by using next-generation sequencing to explore the population genetics of this commercially exploited species. Ni...

Dataset of microsatellites for I. longirostris

Cromatograms of microsatellite loci of I. longirostris

The Caribbean sharpnose shark, Rhizoprionodon porosus is an important resource for artisanal small-scale fisheries. It is one of the most abundant coastal sharks within its distribution range, and plays an important role as a predator in coastal marine ecosystems. For its coastal habits, it is susceptible to intensive extraction, especially the juv...

Morfogeometry shell crab Damithrax spinosissimus (Decapoda: Mithracidae) on three islands in the southwestern Caribbean. The Caribbean King Crab, Damithrax spinosissimus is a fishery resource, but few biological studies are available. Its patchy distribution, and the high environmental heterogeneity due to the oceanographic, landscape, and ecologic...

The Caribbean King Crab, Damithrax spinosissimus is a fishery resource, but few biological studies are available. Its patchy distribution, and the high environmental heterogeneity due to the oceanographic, landscape, and ecological characteristics of the Caribbean Sea, can favor the phenotypic variability according to the geographic origin. For thi...

Landmark-based geometric morphometrics were used to evaluate the effect of flow and depth in the water column on the body size and shape of Brycon henni from river and stream populations. The dendrogram showed that stream populations clustered apart and showed significantly smaller centroid size and narrower bodies than river populations, indicatin...

This study reports for the first time the roles of genetic and body phenotypic variation in two Saccodon dariensis dental morphs. Results showed a lack of ancientmitochondrial differentiation between morphs and body variations concordant with genetic polymorphism or differential plastic responses to diet quality and foraging strategies of S. darien...

Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) represents a pest of economic importance in all Western Hemisphere. This polyphagous species has diverged into two populations that have been mainly recognized with various mitochondrial and nuclear molecular markers and named “the rice” and “the corn” strains. In Colombia, both strains ha...

The Caribbean sharpnose shark, Rhizoprionodon porosus is an important resource for artisanal small-scale fisheries. It is one of the most abundant coastal sharks within its distribution range, and plays an important role as a predator in coastal marine ecosystems. For its coastal habits, it is susceptible to intensive extraction, especially the juv...

El estudio biológico y de población del cangrejo rey Damithrax spinosissimus es fundamental para establecer los planes de manejo de esta especie en el Caribe colombiano. Este estudio brinda información sobre las tallas, la proporción entre sexos y las relaciones biométricas de D. spinosissimus en tres islas del Caribe colombiano (Providencia, Rosar...

Dental polymorphism can be influenced by genetic differences between morphs, environmental plastic responses or both and play an important role in the speciation process. In this study, genetics and morphometric approaches were used to characterize two dental morphs (I and IV) of Saccodon dariensis that coexist in a Colombian stream (Basin of Guata...

The Neotropical freshwater fish Pseudoplatystoma magdaleniatum is a trans-Andean species that belongs to the family of long-whiskered catfishes (family Pimelodidae). In this study, the complete mitochondrial genome of P. magdaleniatum was sequenced using the MiSeq Illumina platform. The complete circular mitogenome is 16,568 bp in length, exhibitin...

The Trans-Andean shovelnose catfish Sorubim cuspicaudus is the largest species within the genus Sorubim. In this work, the pyrosequencing technology was used to obtain the complete mitochondrial genome sequence of S. cuspicaudus. The 16,544 bp molecule contains 13 protein-coding genes, 22 tRNAs, 2 ribosomal RNAs and exhibit perfect synteny with oth...

Ageneiosus pardalis is a trans-Andean member of the Neotropical freshwater fish family Auchenipteridae (Siluriformes). In this work, the complete mitochondrial genome of A. pardalis was pyrosequenced by FLX 454 technology. The mitochondrial genome is 16,484 bp in length and encodes 13 proteins, 22 tRNAs and 2 ribosomal RNAs. Additionally, the synte...

Abstract Ichthyoelephas longirostris is a trans-Andean migratory species belonging to Prochilodontidae family. In this work, the mitochondrial genome of I. longirostris was sequenced by Illumina technology. The 16,840 bp mitogenome encodes 13 proteins, 22 tRNAs, 2 ribosomal RNAs and present a conserved synteny with others species of the Order Chara...

Curimata mivartii is a detritivorous species Neotropical, which is of great importance to local fisheries and riverine ecosystems. In this work, the mitochondrial genome of C. mivartii was completely sequenced using a combination of 454 FLX(+) platform and Sanger/capillary sequencing. The mitogenome is 16,705 bp in length, encodes 13 proteins, 22 t...

Abstract Brycon henni (Characiformes, Bryconidae) is a trans-Andean omnivorous fish considered as promising species in aquaculture of temperate zones. In this work we report for first time the complete mitochondrial genome of B. henni. This mitogenome spans 16,885 bp and encodes 13 proteins, 22 tRNAs and 2 ribosomal RNAs. Additionally, the synteny...

Ichthyoelephas longirostris is a trans-Andean migratory species belonging to Prochilodontidae family. In this work, the mitochondrial genome of I. longirostris was sequenced by Illumina technology. The 16,840 bp mitogenome encodes 13 proteins, 22 tRNAs, 2 ribosomal RNAs and present a conserved synteny with others species of the Order Characiformes.

Abstract Blackfin tuna, Thunnus atlanticus is a widespread epipelagic oceanic species in the western Atlantic. So far the mitochondrial genome of this species remained unknown, although the mitogenomes of all congeners are known. The mitochondrial genome encodes for 13 proteins, 21 tRNAs, 2 ribosomal RNAs and the gene synteny is conserved with othe...

The Caribbean king crab Damithrax spinosissimus (former Mithrax spinosissimus) is a large brachyuran in the tropical and subtropical western Atlantic. This is the first report of the complete mitochondrial genome of D. spinosissimus, which was pyrosequenced by FLX 454 technology. The mtDNA encodes for 13 proteins, 22 tRNAs and 2 ribosomal RNAs. In...

Spodoptera frugiperda is an important pest throughout the Western Hemisphere, particularly in corn, cotton, rice, and sorghum, among other crops. This insect has evolved two strains named the corn and the rice strains, as they have been their most frequently used hosts. However, the corn strain can also be found in cotton and the rice strain in pas...

RESUMEN Introducción: la esponja Leucetta aff. floridana produce compuestos con actividad antiproliferativa diferencial en células tumorales de pulmón y mama, la cual no ha sido explorada en otras líneas tumorales y se desconoce si su potencial antiproliferativo está relacionado con la progresión de células a través del ciclo celular. Objetivo: e...

Introduction: studies performed to Myrmekioderma genus sponges show phospholipid fatty acids, volatile compounds, sterols, bioactive cyclic diterpenes, sesquiterpenes, lineal diterpenes and glycolipid ethers. Objetive: to evaluate the antiproliferative effect of seven fractions (F1-F7) obtained by flash column chromatography from the most bioactive...

Introduction: studies performed to Myrmekioderma genus sponges show phospholipid fatty acids, volatile compounds, sterols, bioactive cyclic diterpenes, sesquiterpenes, lineal diterpenes and glycolipid ethers. Objetive: to evaluate the antiproliferative effect of seven fractions (F1-F7) obtained by flash column chromatography from the most bioactive...

Habitat change in Rhodnius spp may represent an environmental challenge for the development of the species, particularly when feeding frequency and population density vary in nature. To estimate the effect of these variables in stability on development, the degree of directional asymmetry (DA) and fluctuating asymmetry (FA) in the wing size and sha...

Introduction: Leucetta aff. floridana sponge produces compounds with differential antiproliferative activity on lung and breast cancer. Nevertheless, this activity in other tumour cell lines has not yet been tested and it remains unknown whether its antiproliferative potential is correlated with the cell progression through cell cycle or not. Objec...

Genetic connectivity among populations is of crucial importance in conservation and management of commercial threatened species. Here, we explored genetic connectivity and diversity from 490 queen conch Strombus gigas from nine oceanic atolls within the San Andres archipelago and three coastal islands closer to the colombian continental shelf (sepa...