Bio Anorí, the biological expedition that documented fish diversity after the post-conflict in Antioquia, Colombia
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Cited by 2 publications
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Major knowledge shortfalls for Colombian Amazonian anurans: Implications for conservation
The Amazon boasts the highest anuran species diversity in the world. The Colombian Amazon has the highest rates of illegal deforestation, leading to accelerated species loss. The objective of this review was to identify knowledge shortfalls in anuran research to effectively address conservation efforts. We conducted a systematic literature search from different databases. To this end, we evaluated knowledge gaps in the published literature to pinpoint areas where information is lacking, aiming to address critical topics essential for advancing scientific understanding and informing effective conservation and management strategies. We read the Abstract, Methods, Study Area, Results and supplementary material for each document following the PRISMA (Preferred Reporting Items for Systematic reviews and Meta‐Analyses) protocol. We found 161 documents, with the earliest publications dating back to the 1940s, and the highest productivity occurring since 2000. The diversity of research topics has increased over time. The most studied topics were systematics and taxonomy, natural history, geographic distributions, while the least studied topics (with less than six documents) were cell biology and microbiology, genetics, toxicology, ethnobiology, diet, infectious diseases, biogeography and macroecology. There remains a need for further research in these underrepresented areas. Only 10 species were represented in more than 17 papers and 165 species were represented in less than three publications. Only three species (Allobates femoralis, Dendropsophus parviceps and Phyllomedusa bicolor) were studied from more than 10 topics and, in general, the studies concentrated on adult life stages, maintaining a gap in the knowledge of larval stages (Haeckelian shortfall). We found 296 anuran species reported in the published documents; and the departments of Amazonas, Caquetá and Putumayo had the highest number of studies with great knowledge gaps in Meta, Vichada, Nariño and Cauca. There was an important increase in the collection of primary field data, and the use of biological collections for specimen studies, with 30.6% and 40% of total studies in these periods, respectively, relying on these data sources. However, in the entire 76‐year span, there has been only one publication that conducted experiments on anurans, highlighting the considerable lack of eco‐physiological studies. Our review did not find a population ecology paper with detailed demographic data or life tables (Prestonian shortfall), although we did uncover six papers reporting abundance data of seven species that could be applied to conservation efforts. We found two papers that reported on functional traits such as reproductive modes and morphological traits (Raunkiæran shortfall); but we did not find a paper on biotic interactions (Eltonian shortfall), species'abiotic tolerances (Hutchinsonian shortfall), or explicit evolutionary patterns (Darwinian shortfall). Only five anuran species were listed in the “Catálogo de Anfibios y Reptiles de Colombia” and only two species have distribution models available on the BioModelos online platform to map Colombian species distribution (Wallacean shortfall). Of the 296 anuran species, 32 are classified under various IUCN threat categories, although these assessments were based solely on geographical distribution data (AOO and EOO) due to the lack of population trend information, resulting in 218 species categorized as of least conservation concern, due to their wide distribution. This study highlights the limited focus on anuran population ecology in the Colombian Amazon, despite its critical role in understanding demographic processes and species conservation. Herpetological research in the Amazon must focus on providing the following critical information for species conservation: (a) long‐term participatory population assessments in mature native forests, (b) detection of changes in the abundance and value of species' functional traits in response to landscape anthropogenic transformation and (c) the development and validation of species distribution maps for the Amazonian region. Sharing raw anuran species population and distribution data through open‐access platforms are crucial steps for the development of informed conservation strategies for the region. Such data enable early detection of habitat degradation and loss effects and establishes a research agenda for long‐term participatory monitoring of anuran species and their habitats.
Major knowledge shortfalls for Colombian Amazonian anurans: Implications for conservation
The Amazon boasts the highest anuran species diversity in the world. The Colombian Amazon has the highest rates of illegal deforestation, leading to accelerated species loss. The objective of this review was to identify knowledge shortfalls in anuran research to effectively address conservation efforts. We conducted a systematic literature search from different databases. To this end, we evaluated knowledge gaps in the published literature to pinpoint areas where information is lacking, aiming to address critical topics essential for advancing scientific understanding and informing effective conservation and management strategies. We read the Abstract, Methods, Study Area, Results and supplementary material for each document following the PRISMA (Preferred Reporting Items for Systematic reviews and Meta‐Analyses) protocol. We found 161 documents, with the earliest publications dating back to the 1940s, and the highest productivity occurring since 2000. The diversity of research topics has increased over time. The most studied topics were systematics and taxonomy, natural history, geographic distributions, while the least studied topics (with less than six documents) were cell biology and microbiology, genetics, toxicology, ethnobiology, diet, infectious diseases, biogeography and macroecology. There remains a need for further research in these underrepresented areas. Only 10 species were represented in more than 17 papers and 165 species were represented in less than three publications. Only three species (Allobates femoralis, Dendropsophus parviceps and Phyllomedusa bicolor) were studied from more than 10 topics and, in general, the studies concentrated on adult life stages, maintaining a gap in the knowledge of larval stages (Haeckelian shortfall). We found 296 anuran species reported in the published documents; and the departments of Amazonas, Caquetá and Putumayo had the highest number of studies with great knowledge gaps in Meta, Vichada, Nariño and Cauca. There was an important increase in the collection of primary field data, and the use of biological collections for specimen studies, with 30.6% and 40% of total studies in these periods, respectively, relying on these data sources. However, in the entire 76‐year span, there has been only one publication that conducted experiments on anurans, highlighting the considerable lack of eco‐physiological studies. Our review did not find a population ecology paper with detailed demographic data or life tables (Prestonian shortfall), although we did uncover six papers reporting abundance data of seven species that could be applied to conservation efforts. We found two papers that reported on functional traits such as reproductive modes and morphological traits (Raunkiæran shortfall); but we did not find a paper on biotic interactions (Eltonian shortfall), species'abiotic tolerances (Hutchinsonian shortfall), or explicit evolutionary patterns (Darwinian shortfall). Only five anuran species were listed in the “Catálogo de Anfibios y Reptiles de Colombia” and only two species have distribution models available on the BioModelos online platform to map Colombian species distribution (Wallacean shortfall). Of the 296 anuran species, 32 are classified under various IUCN threat categories, although these assessments were based solely on geographical distribution data (AOO and EOO) due to the lack of population trend information, resulting in 218 species categorized as of least conservation concern, due to their wide distribution. This study highlights the limited focus on anuran population ecology in the Colombian Amazon, despite its critical role in understanding demographic processes and species conservation. Herpetological research in the Amazon must focus on providing the following critical information for species conservation: (a) long‐term participatory population assessments in mature native forests, (b) detection of changes in the abundance and value of species' functional traits in response to landscape anthropogenic transformation and (c) the development and validation of species distribution maps for the Amazonian region. Sharing raw anuran species population and distribution data through open‐access platforms are crucial steps for the development of informed conservation strategies for the region. Such data enable early detection of habitat degradation and loss effects and establishes a research agenda for long‐term participatory monitoring of anuran species and their habitats.
A new species of Chrysobrycon Weitzman & Menezes, 1998 (Characiformes, Characidae, Stevardiinae) with remarkable sexually dimorphic pigmentation from the upper Río Vaupés basin, Colombian Amazon, with taxonomic key
This study describes Chrysobrycon calamar, a new stevardiine fish from the upper Río Vaupés basin in Colombia. The new species differs from its congeners by the following combined characters: adult males have a dark vertical blotch on the abdominal flanks that is confined to a small area immediately dorsal to the urogenital region and anterior to the third anal-fin ray; adult males with a well-developed vertically humeral blotch, numerous tiny bony hooks on nearly all the upper lobe caudal-fin rays (except C. guahibo, C. hesperus, and C. mojicai), and bony hooks on nearly all branched anal-fin rays (except C. hesperus); the number of vertebrae (43 vs. 38–42); an elongated maxillary anterior process, representing 40% or more of the total length of the bone (vs. with a shorter maxillary anterior process, representing less than 40% of that length); and the posterior portion of the maxilla not reaching the vertical through the anterior border of the eye when the mouth is closed (except from C. yoliae). Additionally, C. calamar differs from C. mojicai by the number of maxillary teeth (2–4 vs. 9–17) and shape of the distal tips of most maxillary teeth (straight along their lengths vs. lateroventrally curved). Remarks on the interspecific color variation associated with sexual dimorphism and other characteristics of the genus are provided. A key to the species of Chrysobrycon is presented. The discovery of C. calamar is a key advance in the understanding of fish biodiversity associated with endemism-rich regions that could be explored after the guerrilla demobilized in Colombia.
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