A5060267741- Fish biology, ecology, and behavior
- Fish Biology and Ecology Studies
- Fish Ecology and Management Studies
- Morphological variations and asymmetry
- Ichthyology and Marine Biology
- Evolution and Paleontology Studies
- Genetic diversity and population structure
- Cephalopods and Marine Biology
- Aquaculture Nutrition and Growth
- Coral and Marine Ecosystems Studies
- Identification and Quantification in Food
- Isotope Analysis in Ecology
- Aquatic life and conservation
- Business, Innovation, and Economy
- Wildlife Ecology and Conservation
- Marine and fisheries research
- Animal Ecology and Behavior Studies
- Marine Bivalve and Aquaculture Studies
- Environmental and Cultural Studies in Latin America and Beyond
- Lepidoptera: Biology and Taxonomy
- Ecology and Vegetation Dynamics Studies
- Entomological Studies and Ecology
- Botanical Research and Applications
- Plant and animal studies
- Marine Biology and Ecology Research
El Colegio de la Frontera Sur
2014-2024
Universidad Autónoma de Nayarit
2011-2015
Summary 1. The species composition of stream fish assemblages changes across the longitudinal fluvial gradient large river basins. These may reflect both zonation in distributions and environmental filtering traits as environments change from uplands to lowlands catchments. Previous research has shown that taxonomic diversity generally increases larger, lowland streams, River Continuum Concept, Habitat Template other frameworks have provided expectations for what functional groups fishes...
La cuenca del río Usumacinta se caracteriza por su gran extensión, heterogeneidad ecológica y alta biodiversidad. Con el objetivo de documentar manera integral la riqueza distribución ictiofauna, incluyen en este trabajo los registros para (1994-2014) depositados Colección Peces (ECOSC), además revisión bibliográfica otras bases datos nacionales e internacionales. Adicionalmente con finalidad analizar diversidad abundancia, realizaron muestreos (2014 2015) 3 zonas: selva, planicie delta....
A systematic checklist of fishes in La Encrucijada Biosphere Reserve (REBIEN) was documented, during the period from 2004 to 2009. The list is composed by 153 species, included two classes, 20 orders, 52 families and 107 genera. total nine are added continental environments Chiapas, four registered first time estuarine-lagoon México (Cathorops cf. fuerthii, Trichiurus nitens, Guavina micropus Gobionellus liolepis), last species extended their range distribution Mexican Pacific; also...
Although Chiapas is recognized as home to some of the most interesting fishes in Mexico, there are still regions state that poorly surveyed. Our objective was document fish species La Venta River, well its largest tributaries and Netzahualc\yotl Reservoir. To this aim, field collections were made during three consecutive years preserved specimens from ichthyological collection at El Colegio de la Frontera Sur, San Crist\bal, reviewed. We identified 42 including new records for (3 species),...
In the present study we evaluated putative cases of sympatric speciation in genus Herichthys by studying variation head shape using principal component analysis, phylomorphospace and reconstructions ancestral states feeding preferences. includes both allopatric sister species, as well unrelated species thus offers great potential for evolutionary studies putatively speciation. is northernmost group cichlids America one most ecologically disparate genera within Middle American cichlids....
RESUMEN:El género Profundulus es uno de los grupos peces más antiguos, distribuidos al norte América Central en México, Guatemala y Honduras.No obstante, son pocos trabajos que se han realizado para conocer el número especies lo conforman sus relaciones filogenéticas.Históricamente reconoció este taxón estaba conformado por dos naturales, actualmente considerados como subgéneros Tlaloc.Recientes investigaciones genéticas revelado un alto grado diferenciación entre ambos taxones algunas...
Se evaluaron y compararon diversas características morfológicas de 6 especies Vieja Fernández-Yépez,1969 del río Usumacinta. emplearon 20 organismos adultos por especie 33 medidas corporales que fueronestandarizadas examinadas con un análisis discriminante. Además se comparó la forma cuerpo entre las especies,mediante el morfometría geométrica a partir imágenes digitalizadas. El morfometríatradicional permitió diferenciar los seis taxones. encontraron 10 discriminantes, expresandiferencias...
Vieja hartwegi was described by Taylor and Miller in 1980 based on 45 juvenile sub-adult specimens, but this species shows an enormous variation coloration patterns during ontogenic development between individuals. Additionally, morphological data have demonstrated the existence of two forms V. hartwegi: typical morph a moderately deep to slightly elongated body shape with midlateral band, rheophilic lack band. Herein we redescribe adding adults individuals from broad geographic ranges, as...
Abstract Environmental changes caused by hydrological shifts between wet and dry seasons in the tropics drive variation resource availability feeding interactions for riverine fish assemblages, but studies of trophic structure typically take place over short time scales that do not adequately capture this variation. In study, we used analysis stable isotopes (δ 13 C δ 15 N) to assess seasonal diversity relative importance production sources supporting assemblages La Venta River, largest...
The San Pedro Mezquital River is the seventh largest river in Mexico, and flows through Sierra Madre Occidental into Marismas Nacionales Biosphere Reserve, on coast of state Nayarit. present study to conform a systematic checklist fishes lower basin River. In total, 52 species were collected from 24 families. Four native (Atherinella crystallina, Poecilia butleri, Poeciliopsis latidens prolifica) that are federally protected. Five new records for This constitutes first approximation fish...
The endangered Chiapas killifish Tlaloc hildebrandi is an endemic freshwater species that lives in four subbasins of the Grijalva and Usumacinta basins, one most geographically restricted Produndulidae family. was originally described as to springs high limestone plateau San Cristóbal de Las Casas Río Amarillo subbasin (upper basin). However, it recently recorded Jataté Tzaconejá upper basin, thereby expanding its known distribution range. discovery these populations relevant not only for...
Abstract Mexico is a megadiverse region with complex geological history, but it remains unclear to what extent the distribution of freshwater fish has been influenced by geographic barriers. This study examines population level genetic divergence and phylogenetic relationships species in shortfin group subgenus Mollienesia (genus Poecilia), live-bearing fishes that are widely distributed across Mexico, sampling at small scale. Samples from over 50 locations were analyzed for six using...
This study assesses the patterns of variation in body shape, and relations morphological similarity among species Theraps – Paraneetroplus clade order to determine whether shape may be a trait phylogenetic relations. A total 208 specimens belonging 10 were examined. The left side each specimen was photographed; photograph, 27 fixed landmarks placed identify variation. Images processed by using geometric morphometrics, followed principal component analysis. signal for then calculated. To...
Abstract In Mexico, natural populations of the opossum pipefish, Microphys brachyurus , are under pressure by anthropogenic alteration their habitat and unregulated fishing as this species is traded an aquarium fish, where its survival low due to inadequate culture practices. The development culturing techniques has been a successful strategy protect many exploited through providing alternative source wild exploitation. aim study was examine effect on growth, condition, pipefish cultured for...
Astyanax armandoi Lozano-Vilano and Contreras-Balderas, 1990, a characid described as endemic to small stream in southern Mexico, is hereby synonymized with A. aeneus (Günther, 1860), species widespread northern Central America. was diagnosed by its expanded lower lip, combination suite of osteological characters. The labial expansion has been shown other populations (in Campeche Chiapas, Mexico) be an ecophenotype, adaptation hypoxia. osteological, meristic, morphometric characters are...
Abstract Natural populations of the opossum pipefish, Microphis brachyurus , are affected in Mexico by anthropogenic alteration their habitat and unregulated fishing as this species is traded an aquarium fish without formal records occurs with other syngnathids around world. M. estuarine adapted to salinity fluctuations. The aim study was examine effect on growth, condition, survival juvenile pipefish cultured for 4 wk at salinities 0, 8, 16 g/L. Pipefish were fed enriched Artemia nauplii...
Historical hydrological changes and the environmental characteristics of northern Middle America have promoted diversification determined distribution fishes in Grijalva Usumacinta river basins Mexico. In several taxa with wide distributions, cryptic diversity has been identified through molecular morphological analyses. This study evaluated intraspecific variation Dorosoma anale Meek, 1904 petenense (Günther, 1867) along geometric morphometric linear biometric Little differentiation was...
Arsenura armida plays an important ecological role in the development of woods and forests throughout Latin America. It is also consumed several rural communities Mexico. At present, there no information on host preferences this species moth, habitat type or effects human consumption population numbers. This paper determines effect agricultural management distribution, occupation abundance larvae A. order to promote strategies for its sustainable exploitation. Six observation plots, each...
Heroine cichlids are characterized by high morphological diversity, mainly in structures related to the capture and processing of food. The existence ecomorphological groups has been proposed based on feeding behavior, where it is common for some phylogenetically unrelated species show evolutionary convergence. Using geometric morphometrics comparative phylogenetic methods, variation cranial morphology was evaluated 17 heroine representing 5 ecomorphs. Cranial ecomorphs were recovered...