Luis Amado Ayala Pérez

• PhD
• Academic Secretary at Metropolitan Autonomous University

En la Reserva de la Biósfera Los Petenes, la villajaiba (Lutjanus synagris) es una especie dominante, con alto valor comercial y un evidente proceso de sobreexplotación pesquera. Conocer las características de su hábitat, su abundancia y distribución son base para desarrollar propuestas de aprovechamiento sostenible. El objetivo de este estudio fue...

Tropical coastal environments, notably the southern Gulf of Mexico, are recognized for their rich biodiversity and productive habitats, with key areas being the Terminos Lagoon Flora and Fauna Protected Area (TLFFPA) and the Los Petenes Biosphere Reserve (LPBR). This study, spanning 1985–2011, presents an environmental overview and fish abundance a...

The invasion of non-native species is one of the main threats to biodiversity conservation and the provision of ecosystem services. Mangroves are one of the most vulnerable ecosystems worldwide due to invasive alien species (IAS), as they can destabilize the structure and function of trophic webs and reduce their primary productivity, mainly throug...

Within the Gulf of Mexico, five of the seven species of sea turtles are distributed and carry out essential stages of their life cycle. The marine habitats of sea turtles are subject to various threats, including bycatch and boat traffic. The aim of this study was to identify, in the marine portion of Isla Arena, Campeche, sites of use of space for...

La laguna de Mecoacán es un ecosistema utilizado por diversas especies como área de crianza, refugio, alimentación y crecimiento, particularmente por moluscos, crustáceos y peces. El objetivo de este estudio fue comparar el comportamiento ambiental y la estructura de la comunidad de peces entre dos ciclos nictemerales en un sitio localizado cerca d...

Background. In Mexico, few studies have been carried out on epibiosis. Epizoic diatoms are used as biological indicators of ecosystems due to their apparent epibiont specificity with host animals. Little is known about this specificity in the planktonic larval phases. There have been no studies focused on epizoic diatoms on the marine gastropod Ali...

Terminos Lagoon is recognized as an ecosystem of great diversity and productivity in the southern Gulf of Mexico. It is also the site of various anthropogenic activities in the lagoon as well as in its surroundings. In addition, in recent years this lagoon has showed variations in temperature and salinity as a result of global warming and/or waters...

The coastal zone of Los Petenes” Biosphere Reserve, is a critical breeding habitat for many species, particularly fish. Despite its low anthropic impact, development on the coastal area around the reserve is gradually increasing and fishing activities continue to grow; however, there are few studies on fish communities and the characteristics of th...

Although skeletal and muscle anatomy has supported Gymnuridae as the sister group of the most derived myliobatoids, recent studies based on molecular characters suggest that the family branches into a more basal position than previously thought. This study aims to understand the brain anatomy of the genus Gymnura and its importance in the evolution...

Sea turtle hotspots in Isla Arena, Campeche and their interaction with vessels

The fish community of the Mecoacan lagoon plays a main ecological and economic role in the coastal zone of the Gulf of Mexico since they are key indicators of the health of aquatic ecosystems, maintain a flow and ex-change of energy with other systems and offer various ecosystem services. Because of the scarcity of studies on the structure of the f...

Several studies on the elasmobranchs neuroanatomy have shown that their brain is more complex than previously thought, and had significant intra and interspecific variations. The objective of this work was conducting a comparative encephalic neuroanatomy study of two species of genus Myliobatis. In total, 16 organisms of genera Myliobatis californi...

Los Petenes Biosphere Reserve (LPBR), in Campeche, Mexico, is a coastal strip that integrates a land portion -where petenes are distinguished as unique ecosystems-, and a marine portion that highlights the presence of mangroves and seagrasses as key ecosystems. In LPBR, seagrasses have been identified as the largest and best conserved ecosystem in...

In the Mexican state of Campeche, the marine littoral portion of Los Petenes Biosphere Reserve (RBLP), integrates several ecological components such as the fish community as the more diverse and abundant aquatic macrofauna. The coastal marine fish structure and function is conditioned by the comprehension of the environmental dynamic in different s...

We recorded the first opportunistic observation and capture of a non-native lionfish (Pterois volitans [Linnaeus 1758]: Scorpaenidae) in waters of a natural protected area off the coast of Campeche state, southern Gulf of Mexico. The specimen was collected about 600 m off the shore at scarcely 1 m depth. The length (365 mm) and weight (701 g) of th...

La Reserva de la Biosfera Los Petenes (RBLP) integra ambientes continentales y marinos, conformando una unidad biogeográfica de relevancia biológica, ecológica, científica y económica. Uno de los componentes estructurales más abundante en la RBLP son los peces, los cuales desempeñan diversos papeles ecológicos entre ellos el transporte de energía,...

La comunidad del necton en la laguna de Términos: modificación del hábitat vs cambios en la comunidad Resumen Las presiones antropogénicas sobre los ecosistemas costeros son de interés primordial, ya que estos pro-porcionan bienes y servicios de los que depende el bienestar humano. Sin embargo se requiere la capa-cidad de observar las condiciones d...

La Reserva de la Biósfera Los Petenes (RBLP) se localiza en la costa de Campeche, en el Golfo de México. En este ecosistema destacan la fauna nectónica por su abundancia y diversidad, y la amplia cobertura de pastos marinos. El objetivo del presente trabajo fue analizar las asociaciones de los peces dominantes en un marco de variabilidad ambiental...

The Petenes Biosphere Reserve (RBLP) is located on the coast of Campeche in the Gulf of Mexico. In this ecosystem nektonic fauna stand out for its abundance and diversity as well as the wide sea grass beds. The purpose of the present work was to analyze the dominant fish associations in a temporary variable environment (dry and rainy season) and ny...

Tarpon age and growth studies are scarce and most of them had some problems to determine age through annular marks on otoliths. The objective of this paper is to determine age and describe growth of tarpon in Campeche coast. Tarpons were collected between May 2009 and February 2012. Organisms were measured on fork length (Lf) and total weight (Pt)...

Tarpon age and growth studies are scarce and most of them had some problems to determine age through annular marks on otoliths. The objective of this paper is to determine age and describe growth of tarpon in Campeche coast. Tarpons were collected between May 2009 and February 2012. Organisms were measured on fork length (Lf) and total weight (Pt)...

La calidad del agua es una condición que depende de factores naturales y antrópicos ya que viene determinada por la erosión del substrato mineral, los procesos atmosféricos de evapotranspiración y sedimentación de lodos y sales, la lixiviación natural de la materia orgánica y los nutrientes del suelo, por los factores hidrológicos y los procesos bi...

"Los Petenes" Biosphere Reserve (RBLP) is a critical habitat for many aquatic and terrestrial species. It has the biggest and better conserved seagrass beds, and it represents an important habitat for food, protection and breeding of aquatic organisms, and a temporal refuge for migratory species. The objective of this study was to describe the icht...

La Reserva de la Biósfera Los Petenes constituye un hábitat crítico para una gran diversidad de especies de peces, la zona de pastos marinos es utilizada con fines de alimentación, protección, crianza y refugio temporal. El objetivo es analizar la estructura espacio-temporal de la comunidad de peces y su relación con la variabilidad ambiental e ide...

El pepino de mar es un recurso que habita en la costa de Campeche y que ha sido poco estudiado. Ya existen indicios de una pesca clandestina por lo que es necesaria y urgen- te la determinación del potencial para su aprovechamiento, de manera que su uso este regulado para garantizar su conservación. En este sentido, surge de la necesidad de la saga...

The biodiversity and abundance of commercially important biotic resources on the west coast of Campeche (Mexico) is recognized. The main extraction activity is seabob shrimp fishing. This paper aims to analyze and discuss changes in the abundance of the fish community in two annual cycles by statistical analysis. Between February 2003 and January 2...

The biodiversity and abundance of commercially important biotic resources on the west coast of Campeche (Mexico) is recognized. The main extraction activity is seabob shrimp fishing. This paper aims to analyze and discuss changes in the abundance of the fish community in two annual cycles by statistical analysis. Between February 2003 and January 2...

The fish community of the southern Gulf of Mexico is abundant and diverse, and its components are affected by the bycatch of the seabob shrimp fishery. The spatial and temporal abundance and diversity patterns of the fish community are described and analyzed in this paper, and the ecologically dominant species are identified. Monthly sampling was c...

The fish community of the southern Gulf of Mexico is abundant and diverse, and its components are affected by the bycatch of the seabob shrimp fishery. The spatial and temporal abundance and diversity patterns of the fish community are described and analyzed in this paper, and the ecologically dominant species are identified. Monthly sampling was c...

The star drum Stellifer lanceolatus (Holbrook 1855) is a dominant species along the western part of the Campeche coastline, southern Gulf of Mexico, and it is regularly caught as bycatch in the seabob shrimp (Xiphopenaeus kroyeri) fishery. It is not commercially important but plays an important role in the transfer of energy through the ecosystem....

The star drum Stellifer lanceolatus (Holbrook 1855) is a dominant species along the western part of the Campeche coastline, southern Gulf of Mexico, and it is regularly caught as bycatch in the seabob shrimp (Xiphopenaeus kroyeri) fishery. It is not commercially important but plays an important role in the transfer of energy through the ecosystem....

Cathorops melanopus is the most abundant fish on the west coast of Campeche, Mexico. Its distribution is influenced by water temperature, salinity, and transparency, and it is frequently found in river outlets. To analyze the main biological and ecological patterns of this species, from February 2003 to February 2004 a total of 19,048 specimens wer...

Cathorops melanopus is the most abundant fish on the west coast of Campeche, Mexico. Its distribution is influenced by water temperature, salinity, and transparency, and it is frequently found in river outlets. To analyze the main biological and ecological patterns of this species, from February 2003 to February 2004 a total of 19,048 specimens wer...

The Silver Perch Bairdiella chrysoura is a dominant species in the ichthyofauna of Terminos Lagoon, Campeche, Mexico. Monthly samplings conducted in 23 sites between September 1997 and March 1999 using a shrimp trawl net allowed catching 1192 organisms with a total weight of 25.14 kg. Total length interval is 1.8-26.9 cm with a modal length of 10.7...

In a natural world increasingly transformed by human activities, the contemporary acceleration of biodiversity loss is now widely accepted. Coastal and estuarine environments are some of the most productive ecological systems on Earth and are able to provide many essential ecosystem goods and services, such as protein from fish or nutrient exports...

This study describes the current state of the nektonic communities in Terminos Lagoon in relation to the main environmental factors, and documents variations in number of fish species, dominance and abundance, compared to studies performed in 1980. Information on several environmental factors (temperature, salinity, oxygen, pH and transparency) in...

The structure of the fish community in Terminos Lagoon, Campeche, is analyzed on the base the description of the abundance, distribution, length composition and identification of the dominant species. The results are discussed and compared with the published information. 437 trawl tows were made in 19 monthly collection in 23 sites between Septembe...

The structure of the fish community in Terminos Lagoon, Campeche, is analyzed on the base the description of the abundance, distribution, length composition and identification of the dominant species. The results are discussed and compared with the published information. 437 trawl tows were made in 19 monthly collection in 23 sites between Septembe...

Diapterus rhombeus dominates the nektonic community of Terminos Lagoon and is associated to zones with submerged vegetation, temperatures between 27 and 33 degrees C and salinity between 25 and 36.5 UPS. A total of 3,024 individuals were collected with a trawl net in 23 sites between September 1997 and September 1998. The length-weight model parame...

Diapterus rhombeus dominates the nektonic community of Terminos Lagoon and is associated to zones with submerged vegetation, temperatures between 27 and 33°C and salinity between 25 and 36.5 UPS. A total of 3 024 individuals were collected with a trawl net in 23 sites between September 1997 and September 1998. The length-weight model parameters are...

The environmental and ecological patterns of the fish community in Candelaria-Panlau system (Mexico) are described. Parameters of the water temperature, salinity and transparency, and density, biomass and diversity of the fish community were analyzed. Between April 1993 and April 1994 five stations were sampled monthly. The fish community had 50 sp...

The environmental and ecological patterns of the fish community in Candelaria-Panlau system (Mexico) are described. Parameters of the water temperature, salinity and transparency, and density, biomass and diversity of the fish community were analyzed. Between April 1993 and April 1994 five stations were sampled monthly. The fish community had 50 sp...

A total of 640 Anchoa mitchilli were collected monthly in ten stations at Palizada-Del Este, Campeche, Mexico (August 1985-July 1986). This, the second species of the site in abundance and frequency of collection, is associated with estuarine areas, muddy bottoms, salinity of 20.4 - 26.3 ppt and low water transparency (17.6-25.0%). Growth is allome...