Omar Domínguez-Domínguez

• PhD
• Senior Researcher at Universidad Michoacana de San Nicolás de Hidalgo

509 Zootaxa 5618 (4): 509-524 https://www.mapress.com/zt/ Abstract The hamlets (Hypoplectrus spp., Teleostei: Serranidae) are a group of small predatory reef-associated fishes endemic to the tropical northwestern Atlantic that are characterized by an exceptionally high diversification rate. Currently 18 species are recognized, with seven described...

Cichlids of the genus Thorichthys are a morphologically diverse clade of nine species occurring from Mexico south to the Motagua River in Guatemala and Honduras. Our understanding of species relationships within Thorichthys and other genera of Northern Neotropical cichlids has improved in recent years; however, phylogenetic placement of some specie...

This work assessed the sexual maturity of breeding females and males of black sea turtles (Chelonia mydas agassizii) from the population in Michoacan, Mexico. This study also provides the first report of the age at sexual maturity for male black sea turtles in the eastern Pacific. Using information on juvenile growth rate, length, and age at recrui...

Squatina californica is a near‐threatened angel shark distributed in coastal areas of eastern Pacific. Despite its wide distribution and the conservation threats, basic knowledge of the species populations, evolutionary history and genetic diversity is scarce. In this study, we use two mitochondrial genetic markers (Control Region of mtDNA and Cyto...

Geological and climatic events frequently represent the primary explanations to describe evolutionary processes among species. Freshwater fishes have been used previously as models to uncover evolutionary and historical biogeographic patterns in central Mexico, hydrologic systems and biotas. Xenotoca variata (Cyprinodontiformes: Goodeidae) is one o...

Background Understanding the processes that influence distribution of organisms is a major goal in evolutionary biology. Speciation in freshwater fishes is mainly associated with the “island-like” model of evolution, in which the formation of land barriers between different hydrographic basins interrupts gene flow and promotes isolation. Freshwater...

The tropical eastern Pacific (TEP) is a biogeographic region with a substantial set of isolated oceanic islands and mainland shoreline habitat barriers, as well as complex oceanographic dynamics due to major ocean currents, upwelling areas, eddies, and thermal instabilities. These characteristics have shaped spatial patterns of biodiversity between...

The Tropical Indo-Pacific (TIP) includes about two thirds of the world's tropical oceans and harbors an enormous number of marine species. The distributions of those species within the region is affected by habitat discontinuities and oceanographic features. As well as many smaller ones, the TIP contains seven large recognized biogeographic barrier...

The Tropical Indo-Pacific (TIP) includes about two thirds of the world's tropical oceans and harbors an enormous number of marine species. The distributions of those species within the region is affected by habitat discontinuities and oceanographic features. As well as many smaller ones, the TIP contains seven large recognized biogeographic barrier...

Goodeinae is a subfamily of critically endangered fish native to central Mexico. Populations of Skiffia lermae , a species belonging to this subfamily, have significantly decreased in the past two decades. A previous study showed that S. lermae is sensitive to acute nitrate-nitrogen (NO 3 -N) exposure, leading to noticeable changes in both behavior...

Groupers (Family: Serranidae) are ecologically and commercially important fishes for the marine ecosystems and coastal communities of the Greater Caribbean. Groupers are considered generalist carnivores, however, detailed trophic information on the diet of most of the species in the group is not available, such is the case of *Cephalopholis cruenta...

The Regal Demoiselle, Neopomacentrus cyanomos is only the second Indo-Pacific reef fish (after the lionfish) to become well established in the Greater Caribbean (GC). It was first discovered, after it already was common, in the southwest Gulf of Mexico (SGM) in 2013. In 2019, an isolated second population was found at Trinidad, 3300 km away. The in...

Stelliferinae is the third most speciose subfamily of Sciaenidae, with 51 recognized species arranged in five genera. Phylogenies derived from both morphological and molecular data support the monophyly of this subfamily, although there is no general consensus on the intergeneric relationships or the species diversity of this group. We used the bar...

Central Mexico is a region of special interest for the conservation of freshwater fishes. The endemic subfamily Goodeinae, which is mostly found along the Mesa Central, is highly threatened, with the majority of its 40 species are either Critically Endangered or Endangered, 1 is Extinct, and 2 are Extinct in the Wild. High levels of micro-endemicit...

The tropical eastern Pacific (TEP) has been divided into several biogeographic provinces separated by two types of habitat gaps: stretches of sandy shoreline that separate rocky reefs on the mainland (Sinaloan and Central American gaps) and expanses of deep ocean between offshore TEP islands and the mainland. Those gaps are known to influence the d...

Abstract The El Chango quarry is an outstanding paleontological site of Mexico. The marine limestones of this site represent a small outcrop of the Cintalapa Formation and bear a significant assemblage of Early Cenomanian continental plants plus marine crustaceans, decapods, mollusks, and fishes. This paper includes the description of a double-armo...

Antecedentes. Los corales y arrecifes coralinos del Pacífico oriental se distribuyen de manera discontinua desde el Golfo de California hasta Huatulco, México y de Los Cóbanos, El Salvador hasta el norte de Perú. Se consideraba que la comunidad coralina más suroriental en el Pacífico mexicano era El Tejoncito (bahías de Huatulco); sin embargo, reci...

Ambystoma dumerilii, known as “achoque”, is a microendemic salamander from Lake Pátzcuaro, considered as a critically endangered species according to the IUCN (2020). The main threats are high levels of water contamination, high levels of eutrophication in addition to the fact that invasive species can be found within the “achoque” habitat. For the...

Los peces de cuevas representan un excelente modelo para estudiar la evolución del fenotipo, debido a su alta asociación con el ambiente extremo en el que han evolucionado. La adaptación de estos organismos se ha dado como una respuesta a presiones de selección que se refleja en cambios fenotípicos asociados con su particular estrategia de vida en...

Background Ictalurus is one of the most representative groups of North American freshwater fishes. Although this group has a well-studied fossil record and has been the subject of several morphological and molecular phylogenetic studies, incomplete taxonomic sampling and insufficient taxonomic studies have produced a rather complex classification,...

We documented the nearshore ray-finned fishes in Puerto Morelos Reef National Park (PMRNP) by sampling 57 localities, including rocky intertidal pools, sandy bottoms, Thalassia beds, coral reefs, artificial reefs, karstic-slab bottoms, demersal-pelagic areas, and sessile-Sargassum patches. We recorded seven species new to Caribbean Mexican waters a...

Background The lack of barriers in the marine environment has promoted the idea of panmixia in marine organisms. However, oceanographic conditions and habitat characteristics have recently been linked to genetic structure in marine species. The Tropical Eastern Pacific (TEP) is characterized by dynamic current systems and heterogeneous oceanographi...

Analyses of trophic structure and feeding habits of the fish community can provide information on the complex biotic and abiotic interactions in lake ecosystems. Based on stomach content and δ 13 C and δ 15 N stable isotope analyses, we conducted a comprehensive study of the diet of the fish community and its trophic structure in subtropical Lake Z...

Until recently, the genus Profundulus was classified in two subgenera, Profundulus and Tlaloc, the sole members of the family Profundulidae. Newly discovered molecular data have been used to justify the elevation of these subgenera to genera. Yet morphological analyses to diagnose the two genera are lacking. The aim of this study is to provide a ge...

Invasive species represent a threat to biodiversity and ecosystem services and cost millions of dollars to the global economy. The viviparous Mexican fish known as the tequila splitfin ( Zoogoneticus tequila ) became extinct in the wild as a consequence of habitat loss and degradation, and interactions with invasive species. Tequila splitfins are n...

Insular habitats have played an important role in developing evolutionary theory, including natural selection and island biogeography. Caves are insular habitats that place extreme selective pressures on organisms due to the absence of light and food scarcity. Therefore, cave organisms present an excellent opportunity for studying colonization and...

Antecedentes. Los corales y arrecifes coralinos del Pacífico oriental se distribuyen de manera discontinua desde el Golfo de California hasta Huatulco, México y de Los Cóbanos, El Salvador hasta el norte de Perú. Se consideraba que la comunidad coralina más suroriental en el Pacífico mexicano era El Tejoncito (bahías de Huatulco); sin embargo, reci...

Nitrate-nitrogen (NO3-N) pollution related to anthropogenic activities is increasing in freshwater ecosystems. Knowledge about NO3-N sensitivity in freshwater wild fish is needed to understand the differential tolerance between species. Goodeinae is a subfamily of 41 endemic fishes that inhabit central Mexico, with 33 species in the IUCN red list a...

Background Delimiting species across a speciation continuum is a complex task, as the process of species origin is not generally instantaneous. The use of genome-wide data provides unprecedented resolution to address convoluted species delimitation cases, often unraveling cryptic diversity. However, because genome-wide approaches based on the multi...

For 175 years, an unremarkable bass, the Grape-eye Seabass (Hemilutjanus macrophthalmos), has been known from coastal waters in the Eastern Pacific. To date, its phylogenetic placement and classification have been ignored. A preliminary osteological examination of Hemilutjanus hinted that it may have affinities with the Acropomatiformes. To test th...

In spring lakes, which have homogeneous environmental characteristics, it is expected that there will be no significant changes in the composition and structure of communities over time, and fluctuations will generally be related to the ecological attributes of the species. We studied the fish community in a small subtropical spring lake, Lake Zaca...

Comprender la estructura y la dinámica de las redes alimentarias en sistemas de agua dulce sigue siendo un desafío para los ecólogos, principalmente debido a los factores, mecanismos y procesos que deben tenerse en cuenta para que se mantengas las comunidades. Este estudio tiene como objetivo analizar el estado del arte en el tema de la red aliment...

Ecological topics related to food webs: a review with emphasis on global freshwater fish communities Tópicos ecológicos relacionados con las redes alimentarias: una revisión con énfasis sobre comunidades mundiales de peces de agua dulce Abstract Understanding the structure and dynamics of freshwater food webs remains a challenge for ecol-ogists, ma...

Background: Analyses of spatial and temporal patterns and interactions are important for determining the abiotic factors limiting populations and the impact from other species and different anthropogenic stressors that promote the extirpation of species. The fish Hubbsina turneri de Buen (1940) was studied as a model species in a historical context...

The Panamic Clingfish Gobiesox adustus is widely distributed in the Tropical Eastern Pacific (TEP), from the central Gulf of California, Mexico to Ecuador, including the oceanic Revillagigedo Archipelago, and Isla del Coco. This cryptobenthic species is restricted to very shallow rocky-reef habitats. Here, we used one mitochondrial and three nuclea...

Background Ictalurus is one of the most representative groups of North American freshwater fishes. Although this group has a well-studied fossil record, and has been the subject of several morphological and molecular phylogenetic studies, incomplete taxonomic sampling and insufficient taxonomic studies have produced a rather complex classification...

From the 14 to the 17 of February 2022 we carried out a photographic expedition to search for the Opal Goodeid (Allotoca maculata) in the surroundings of the town of Etzatlán in the State of Jalisco, Mexico. In the expedition researchers from the Universities of Morelos and Michoacán, as well as five photographers from the Mexican Conservation Phot...

The correct identification of species is an essential step before any study on biodiversity, ecology or genetics. Keratella is a genus with a predominantly temperate distribution and with several species being endemics or restricted geographically. Its diversity may be underestimated considering the confusing taxonomy of species complexes such as K...

Reproductive tactics and strategies contribute to the persistence and maintenance of long-term populations in fish species. Members of the subfamily Goodeinae are a group of small-bodied freshwater fish with specialized reproduction (viviparity-matrotrophy). They are found in the highlands of central Mexico, most of them endemic. The aim of this st...

Material suplementario (Angulo et al., 2021: Ictiofauna de la zona intermareal rocosa del Área de Conservación Guanacaste, Pacífico Norte de Costa Rica: diversidad y aspectos ecológicos y biogeográficos): Lista de especies ícticas (presencia=1/ausencia=0), según órden y familia, asociadas a la zona de intermareal rocoso en un total de 21 localidade...

The distribution and diversification processes of freshwater fishes have been influenced by tecto-volcanic and climatic events that have in turn promoted genesis, destruction, and numerous changes in the drainage networks, leaving complex phylogeographic patterns in the ichthyofauna of highly dynamic regions such as central Mexico. In this study, w...

Introducción: El intermareal rocoso constituye un paisaje marino costero dominante en el Pacífico Tropical Oriental, albergando comunidades biológicas altamente diversas y funcionalmente complejas. El conocimiento sobre la diversidad y los diversos procesos biológicos que ocurren en tales ambientes es, no obstante, bastante limitado a escala region...

Marine species that are widely distributed in the Tropical Eastern Pacific (TEP) has served as a model for studying biogeographic patterns resulting from the effects of intraregional habitat discontinuities and oceanographic processes on the diversification and evolution of cryptobenthic reef fishes. Tomicodon petersii, a clingfish (Gobiesocidae) e...

Revista Mexicana de Biodiversidad 92 (2021): e923433 Conservation Spatial and temporal variation of fish assemblage structure in a neotropical Mexican river Variación espacial y temporal de la estructura del ensamblaje de peces en un río neotropical mexicano Abstract The introduction of non-native fish into the Teuchitlán River, in west-central Mex...

Introducción: El intermareal rocoso constituye un paisaje marino costero dominante en el Pacífico Tropical Oriental, albergando comunidades biológicas altamente diversas y funcionalmente complejas. El conocimiento sobre la diversidad y los diversos procesos biológicos que ocurren en tales ambientes es, no obstante, bastante limitado a escala region...

Estructura de la comunidad de los tremátodos adultos (Platyhelminthes) del intestino de seis especies de Haemulon (Osteichthyes) en el Parque Nacional Arrecife de Puerto Morelos, Quintana Roo, México Abstract Haemulids (grunts) represent one of the most diverse families of marine fishes. Even though haemulids are well represented in Mexico along th...

The subfamily Goodeinae is a group of fishes endemic to the Mexican highlands. Most of the species are restricted to small and isolated streams or springs. Within this subfamily, the genus Characodon is the earliest diverging lineage of which three species have been described: C. lateralis , C. audax , and C. garmani , with the latter, considered e...

The Teuchitlán River in Mexico is a hotspot of fish diversity, with 3 endemic species. Pseudoxiphophorus bimaculatus has been introduced into the river, but its trophic impact on the system is unknown. We determined the importance of each food item in the diet of P. bimaculatus with a relative importance index, their feeding behavior using an omniv...

Diadromous fishes can exhibit interesting evolutionary and population‐level patterns given their use of freshwater and marine environments as part of their life histories. The River goby genus Awaous are prominent members of riverine ichthyofaunas and occur throughout Atlantic and Pacific slopes of the Americas from the southern United States to Ec...

The family Haemulidae is a wide-ranging group of marine fishes that are of significant commercial value in the Tropical Eastern Pacific (TEP). Phylogenetic studies on the species Anisotremus interruptus have revealed high levels of genetic diversity as well as divergence among populations in the TEP, which suggests that the taxonomic diversity of A...

Central Mexico is characterized by a complex topography that is the result of historic and contemporary tectonic and climatic factors. These events have influenced the evolutionary history of numerous freshwater fishes in the region. Nonetheless, recent studies have shown that life‐history traits and ecological characteristics of species may influe...

Few genetic studies that provide biological, ecological and evolutionary information have been conducted for parrotfishes, including Sparisoma viride, and none has covered the full geographic range of this species. Here, we examine the genetic patterns of the Stoplight parrotfish (S. viride) in the Greater Caribbean and its relationship with the re...

Adult worms of the genus Floridosentis are endoparasites of marine fishes of the genus Mugil and are broadly distributed in the Americas. Currently, Floridosentis includes two species, F. mugilis, distributed in the Gulf of Mexico and along the Atlantic Ocean coast, and F. pacifica, restricted to the Pacific Ocean coast. The aim of this study was t...

THE EXTINCTION OF SPECIES THROUGHOUT THE WORLD has been dramatically increasing, mainly due to different anthropogenic activities that affect ecosystems—the most important being the introduction of non-native species, habitat modification, and pollution. Here we describe our efforts to slow the extinction trend by successfull reintroducing an extin...

The littoral rotifer Lecane bulla is one of the most eurytopic members of the Lecane genus and is found in a wide variety of water bodies around the world. Taxonomic orthodoxy dictates that all specimens of this widespread taxon represent a single morphospecies. We analyzed a dataset of previously published and newly generated sequences of the mito...

The almaco jack, Seriola rivoliana, is a circumtropical pelagic fish of importance both in commercial fisheries and in aquaculture. To understand levels of genetic diversity within and among populations in the wild, population genetic structure and the relative magnitude of migration were assessed using mtDNA sequence data and single nucleotide pol...

The Tropical Eastern Pacific (TEP) is a dynamic coastal environment characterized by a complex system of oceanic processes and discontinuous rocky habitats. These features, in conjunction with the ecological and physiological characteristics of Anisotremus interruptus , might limit gene flow and shape the evolutionary history of the species. In thi...

The demand for shark fins in Asiatic markets has resulted in excessive increases in shark catches, even for species that may be under protection or subject to management. As such, it has been necessary to develop and promote monitoring efforts for exploited species and taxonomic groups in order to improve fishing management strategies for elasmobra...

Introduction: Isla del Coco is an important protected area for marine fauna in the Eastern Tropical Pacific. In this area, the species that inhabit the intertidal zone have been subject to few studies. One of the species inhabiting these areas is the clingfish Gobiesox adustus (Gobiesocidae). Objective: To analyze for the first time the mitochondr...

Background. The Ameca River basin in central Mexico, especially the Teuchitlán River, hosts a rich native and endemic ichthyofauna. The biological traits of these species, however, have not been fully studied, and their habitat has been altered by anthropogenic activities. The aim of this study was to evaluate the reproductive cycle of three native...

El Convenio sobre la Diversidad Biológica, que surgió en la Conferencia sobre Medio Ambiente y Desarrollo, celebrada en Río de Janeiro en 1992, define la diversidad biológica como el conjunto de toda la variabilidad de los organismos que integran los complejos ecológicos que existen en ambientes terrestres, marinos y otros hábitats acuáticos. Esa d...

Lake Pátzcuaro (Michoacán, Mexico) has been subject to a dramatic decline of native species and a decrease in environmental functionality due to a variety of anthropogenic pressures. The local economy depends on the success of the fishing industry, tourism activities, and craft manufacturing. Most of these activities are undertake by native Mexican...

The current distribution and abundance of the 40 species of Goodeidae fishes known from Mexico are described, and a total of 84 Evolutionarily Significant Units (ESUs) is designated within these species. Two species and four ESUs are likely extinct with no captive populations, and three species and eight ESUs are probably extinct in the wild but ha...

Brachionus quadridentatus is a morphologically variable species distributed worldwide. Its taxonomy is confusing due the numerous infrasubspecific variants described in the taxon. Here we explore genetic diversity of certain B. quadridentatus populations, using sequences of COI mtDNA and 18S rDNA genes. With traditional morphology (taxonomic keys),...

The Atherinopsidae is the second largest group of freshwater fishes occupying central Mexico and is one of biological, cultural, and economic importance. The “humboldtianum” clade (Genus Chirostoma) is a “species flock” of nine described species that inhabit lacustrine ecosystems in central Mexico. The high morphological polymorphism within the gro...

Data on marine and brackish-water fishes recorded in the area of the Parque Nacional Sistema Arrecifal Veracruzano in the southwest Gulf of Mexico were extracted from online aggregators of georeferenced location records, the recent ichthyological literature reviewed, and collections and observations made to provide a more complete faunal inventory...

A series of small emergent coral reefs and shallow, submerged coralliferous banks are scattered along the western edge of Campeche Bank (southwest Gulf of Mexico), 150-200 km offshore from the Yucatán Peninsula, Mexico. Here a reasonably comprehensive, annotated checklist of reef-associated fishes for one reef, Cayo Arcas (expanded from 162 to 209...

The North American cyprinid Pimephales promelas is a species with a wide distribution range, occurring in distinct hydrographic basins in Mexico, Canada, and the United States. Previous morphological and meristic analyses of P. promelas concluded that at least three subspecies exist in the midwestern and northeast region of the United States. No st...

Lake Pátzcuaro (Michoacán, Mexico) has been subject to a dramatic decline of native species and a decrease in environmental functionality due to a variety of anthropogenic pressures. The local economy of Lake Pátzcuaro depends on the success of the fishing industry, tourism activities, and craft manufacturing. Most of these activities are undertake...

Skip main navigationJournal menuClose Drawer Menu MoreSections Restricted accessResearch articles Genomics overrules mitochondrial DNA, siding with morphology on a controversial case of species delimitation Carmen del R. Pedraza-Marrón , Raimundo Silva , Jonathan Deeds , Steven M. Van Belleghem , Alicia Mastretta-Yanes , Omar Domín...

Background and goal. The translocation of the Barred Splitfin Chapalichthys encaustus (Goodeidae) in the Teuchitlán River, located at the headwaters of the Ameca river basin in the center of the state of Jalisco, is reported for the first time. Methods. The fish record was obtained approximately 1 km from the origin of the river. Fish were deposite...

A major emerging challenge to resolution of a stable phylogenetic Tree of Life has been incongruent inference among studies. Given the increasing ubiquity of incongruent studies, analyzing the predicted phylogenetic utility and quantitative evidence regarding contributions toward resolution of commonly-used markers in historical studies over the la...

The fish genus Poeciliopsis constitutes a valuable research system for evolutionary ecology, whose phylogenetic relationships have not been fully elucidated. We conducted a multilocus phylogenetic study of the genus based on seven nuclear and two mitochondrial loci with a thorough set of analytical approaches, that is, concatenated (also known as s...