
Manuel Ayón-ParenteUniversity of Guadalajara | UDG · Departamento de Ecología Aplicada
Manuel Ayón-Parente
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Publications (79)
Palabras clave: contaminación, microorganismos, capacidad de resistencia, puertos marítimos, sedimento. RESUMEN El tributilestaño (TBT) es un compuesto altamente tóxico y persistente que representa una serie de riegos para el ambiente, principalmente en los sedimentos de los puertos marítimos. La búsqueda de microorganismos con capacidad de toleran...
Habitat heterogeneity is one of the main factors influencing the dynamics in benthic marine communities. This work assessed the influence of different degrees of coral development − i.e., coral patches and coral communities − on the spatial patterns of echinoderm assemblage in the central Mexican Pacific. The fieldwork was conducted in September 20...
The Mexican Tropical Pacific (MTP) is rich in chitons, mainly represented by the genera Callistochiton Carpenter in Dall, 1879 and Stenoplax Dall, 1879. Despite the widespread presence of these genera in the region, few species have been studied at a molecular level. Using partial cytochrome oxidase I (cox1) gene sequences, we analyzed the genetic...
Cambarellus chapalanus is an endemic species of the area around Lake Chapala in Mexico and knowledge about its biology and ecology is scarce. Its population dynamics were evaluated based on individual growth, mortality, production, and productivity. For this, individuals were collected between November 2011 and October 2012, in ponds located in the...
A redescription of Paguristes aztatlanensis Glassell, 1937 is presented together with the description of Paguristes turkayi n. sp. from the Mexican Pacific. Paguristes turkayi n. sp. is close to P. digueti and P. sanguinimanus, but can be separated from these two species by the following: P. turkayi features a slender rostrum; the ocular peduncles...
Many crustacean species are obligate associates of pocilloporid corals, where they feed, reproduce, and find shelter. However, these coral-associated crustaceans have been poorly studied in the eastern tropical Pacific. Determining the crustacean richness and taxonomic distinctness could help in comparing different coral reefs and the potential eff...
Los copépodos son uno de los grupos más relevantes de la comunidad del zooplancton en todos los ambientes acuáticos. El conocimiento de su diversidad real es un proceso altamente dinámico en el que se están afinando progresivamente los criterios taxonómicos,incluyendo la morfología de microcaracteres y recientemente, las herramientas moleculares. D...
Cladocerans and copepods are the main zooplankton formers in freshwaters. The actual state of pollution faced by the lagoon of Cajititlán restricts the amount of species able to habit this water body, and with it, the functionality of the ecosystem due to their role as phytoplankton consumers and as the principal food source for fishes and other or...
The hermatypic coral ecosystems of the southern coast of Jalisco, Mexico, present an important species richness and coverage for the Mexican Central Pacific. However, knowledge of these ecosystems of the Jalisco coast is fragmented. Studies have concentrated on few localities, employing a limited number of coral health indicators, and gaps still re...
A new species of the pinnotherid crab genus Austinixa from La Cruz de Huanacaxtle, Nayarit, Mexico is described. The new species is closely related to Austinixa roblesi Palacios Theil and Felder, 2020, however these can be distinguished mainly by the shape of the male pleon and telson, gonopod and chelae. In addition, four new records of distributi...
For more than 10 years (2007-2018), the benthic macroinvertebrates of Bahía de Chamela (Mexican Pacific) were sampled at 31 sites (0-25 m depth). A total of 308 species of the five main classes of benthic molluscs were obtained (106 bivalves, 185 gastropods, 13 polyplacophorans, two scaphopods and two cephalopods). This is a significant increase in...
For more than 10 years (2007-2018), the benthic macroinvertebrates of Bahía de Chamela (Mexican Pacific) were sampled at 31 sites (0-25 m depth). A total of 308 species of the five main classes of benthic molluscs were obtained (106 bivalves, 185 gastropods, 13 polyplacophorans, two scaphopods and two cephalopods). This is a significant increase in...
The Cayos Cochinos archipelago forms part of the Mesoamerican Barrier Reef System (MBRS) and is one of the first marine protected areas (MPAs) created in Honduras in 1993. However, it has endured historical fishery exploitation prior to protective efforts. The objective of this study was to evaluate the fish assemblages of the archipelago from an e...
A redescription of Pagurus albus (Benedict, 1892) is presented together with a description of a new species of hermit crab, Pagurus pseudoalbus sp. n., from the Pacific coast of Costa Rica. Pagurus pseudoalbus sp. n. differs from P. albus and P. perlatus by the length of antennal acicles, which do not exceed the distal margin of the 4th antennal se...
A number of specimens of the Californian lancelet, Branchiostoma californiense Andrews, 1893 were found in Isla Melendres, Sinaloa and Bahía Chamela, Jalisco, in the Mexican Pacific. The specimens were collected with a biological dredge on sandy bottoms. Some morphometric and meristic characters of the collected specimens are described and discusse...
Se analizó el fenómeno de imposex en los gasterópodos marinos de tres sitios de la bahía de Manzanillo, México con diferente grado de exposición a Cd, Pb, Hg, As, Cr, Ni y Co. La recolecta de gasterópodos se realizó en febrero y junio de 2016 y en enero de 2017. Se consideraron cinco especies de los tres sitios de muestreo: Hexaplex princeps (26 in...
Four species of Spirontocaris are known from a few records along the coast of the Baja California Peninsula, Mexico: S. prionoata (Todos Santos Bay), S. sica (between San Benito and Cedros Islands), S. snyderi (Cedros Island), and S. truncata (off San Carlos Point). During exploratory surveys off the west coast of the Baja California Peninsula, Mex...
Two new species of the family Alpheidae: Alpheus margaritae sp. n. and Leptalpheus melendezensis sp. n. are described from Santa María-La Reforma, coastal lagoon, SE Gulf of California. Alpheus margaritae sp. n. is closely related to A. antepaenultimus and A. mazatlanicus from the Eastern Pacific and to A. chacei from the Western Atlantic, but can...
The first larval stage of Enallopaguropsis guatemoci is described in detail and illustrated. The larva is compared with larvae known for other genera of Paguridae except Pagurus. A synthesis of all characters provided herein indicates that first larvae of E. guatemoci can be separated from all known pagurid larvae (except Pagurus) by the combinatio...
Caprellid amphipods are common epibionts on a variety of invertebrates as well as vertebrates but little is known on their life cycle in respect to their macrofaunal hosts. This manuscript describes the permanent symbiotic association between Caprella suprapiscis amphipods and the scorpionfish Scorpaena mystes. A total of 303 individuals of the cap...
Specimens of a deep-sea anemone were observed in photographs and video footage taken with the Remotely Operated Vehicle JASON (WHOI Deep Submergence Laboratory) in the Gulf of California, Mexico, in May 2008. Comparison of our material with photographs and description of this species available in literature indicate that the sea anemones filmed dur...
Specimens of a deep-sea anemone were observed in photographs and video footage taken with the Remotely Operated Vehicle JASON (WHOI Deep Submergence Laboratory) in the Gulf of California, Mexico, in May 2008. Comparison of our material with photographs and description of this species available in literature indicate that the sea anemones filmed dur...
A new species of hermit crab, Areopaguristes espetacioni, family Diogenidae, is described and illustrated in detail, including the color pattern in live/fresh specimens. This is the fifth species of Areopaguristes reported from the eastern Pacific. Given the morphological similarity between Areopaguristes espetacioni n. sp. and A. tudgei Lemaitre &...
This study presents the species of bivalves and gastropods of commercial interest
and potential use recorded in 33 sampling stations in the Gulf of Tehuantepec,
southern Mexican Pacific. The collections were performed with a trawling net on board
of the shrimp vessel FIPESCO 63. The relative abundance and the biological value
index (BVI) of every s...
This study presents the species of bivalves and gastropods of commercial interest and potential use recorded in 33 sampling stations in the Gulf of Tehuantepec, southern Mexican Pacific. The collections were performed with a trawling net on board of the shrimp vessel FIPESCO 63. The relative abundance and the biological value index (BVI) of every s...
During a faunistic survey of the islands and islets of Bahía Chamela, Jalisco, Mexico, 40 species of caridean shrimps belonging to 5 families were collected; the Alpheidae with 3 genera and 20 species was the best represented, followed by the Palaemonidae with 10 genera and 12 species. Other families found were: Hippolytidae (3 genera, 5 species),...
A new species of caprellid, Caprella suprapiscis sp. nov., is described based on several specimens collected from Bahía Chamela, Jalisco, Mexico. All specimens were found in association with the scorpionfish Scorpaena mystes. Caprellids are set on the dorsal surface of fishes. The species is distinguished by head with a short dorsal projection, eye...
A new species of commensal shrimp of the genus Typton from holothurians is described and illustrated. The specimens were collected from a single specimen of Holothuria (Halodeima) inornata Semper, 1868 at a depth of 7 m. This is the first record of an association between a shrimp of the genus Typton and echinoderms. With this record, five species o...
The taxonomic status of Paguristes praedator Glassell, 1937, and Paguristes oxyophthalmus Holthuis, 1959, is reevaluated, and the two species redescribed and illustrated in detail. Both species are transferred to the genus Areopaguristes Rahayu & McLaughlin, 2010, a genus previously defined to accommodate species of Paguristes sensu lato with 12 pa...
The first stage of Pontonia simplex Holthuis, 1951 collected on the coast of Jalisco, Mexico, is described and compared with that of P. pinnophylax (Otto, 1821) and Ascidonia flavomaculata (Heller, 1864).
Calyptraeotheres camposi sp. nov. is described from the Gulf of California, Mexico. The new species is close to C. granti (Glassell, 1933) and C. pepeluisi Campos & Hernández-Ávila, 2010 from the Mexican Pacific and to C. hernandezi Hernández-Ávila & Campos 2006 from the Western Atlantic. These four species feature a third maxilliped with a 2-segme...
A new species of Leptalpheus is described from Estero Pérula, Jalisco, on the Pacific coast of Mexico. Leptalpheus corderoae sp. nov. is most similar to Leptalpheus azuero Anker, 2011 from Panama and Leptalpheus axianassae Dworschak & Coelho, 1999 from Brazil, differing from both of them by a combination of morphological characters, especially the...
A new species of the stenopodid shrimp Odontozona is described from deep-water off the west coast of Mexico. It is distinguished from the three other species of the genus known in the area, from O. rubra Wicksten, 1982, and O. foresti Hendrickx, 2002, by the absence of a series of spines on the posterior half of the carapace, behind the post-cervic...
Analysis of wild phyllosoma of Panulirus inflatus (Bouvier, 1895) and P. gracilis Streets, 1871 determined the morphological structures having taxonomic value for differentiation of the two species, in addition to the structures described previously. Of 54 phyllosoma, species identity was confirmed by PCR-restriction fragment length polymorphism (R...
Two new deep-water species of the genus Caprella are described from the central Gulf of California, Pacific coast of Mexico. Caprella calderoni new species is distinguished from the 32 previously recorded species of Caprella from the eastern Pacific by its smooth forehead and pereonites, body not particularly slender, gnathopod 2 inserted at about...
Living specimens of Gastroptychus perarmatus (Haig, 1968), a chirostylid squat lobster, were observed on colonies of gorgonian corals and sponges in the northern Gulf of California. Video footage and photographs obtained from the Remotely Operated Vehicle JASON dive north of Angel de La Guarda Island in the northern Gulf of California indicate that...
Se identificaron 12 especies de cangrejos ermitaños del material recolectado en la bahía Chamela, Jalisco. La familia Diogenidae fue la mejor representada con 7 especies. Nueve especies representan registros nuevos para la bahía y 2 pertenecientes al género Paguristes se descubrió que no han sido descritas. Se encontró asociación de los cangrejos e...
The caridean shrimp Ogyrides wickstenae sp. nov. is described from Mazatlán, Pacific coast of Mexico. The new species is most closely related to O. tarazonai Wicksten & Méndez, 1988 and O. hayi Williams, 1981, sharing with them a single spine on the dorsal midline of the carapace. However, the new species can be distinguished from the two allied sp...
A total of 75 specimens belonging to four species of thalassinoids were collected in the intertidal and estuarine zones of two localities along the Pacific coast of Mexico. Callianassa tabogensis is recorded for the first time in Mexico, and is transferred to the genus Neotrypaea. Material of Callichirus is assigned to Callichirus seilacheri with s...
The type and additional material of Paguristes weddellii (H. Milne Edwards, 1848) were examined. The species is redescribed and illustrated in details. Comparison of P. weddellii with the monotypic genus Tetralobistes Ayón-Parente & Hendrickx, 2010b, shows many similarities, principally in the armature of the distal margin of the male first pleopod...
A new species of Munidopsis Whiteaves, 1784 is described from the SW Gulf of California, western Mexico. The new species differs from all other known species of Munidopsis of the East Pacific by the presence of numerous antero-posteriorly compressed processes on the carapace, many of which are truncate and with crenulated anterior margin, by its ov...
New records are provided for three species of little-known pagurids. All the material reported was collected by the R/V "El Puma" in the central Gulf of California during the GUAYTEC II cruise. New material is reported for Iridopagurus haigae Garcia-Gomez, 1983, Enallopagurus spinicarpus (Glassell, 1937), and Solenopagurus diomedeae (Faxon, 1893),...
The genus Areopaguristes Rahayu & McLaughlin, 2010 is represented in the eastern Pacific by a single species, A. mclaughlinae (Ayón-Parente & Hendrickx, 2006). Based on material recently collected in the Gulf of California, Mexico, and held in museum collections, two new species of this genus are described. Areopaguristes lemaitrei sp. nov. and A....
Material belonging to the genus Processa, held in the Regional Marine Invertebrates Collection in Mazatlán, Mexico, is revised including specimens of the widely distributed P. peruviana, and the scarcely collected P. hawaiensis. For comparative purposes with the specimens from Hawaii and other localities, a detailed description of a male of P. hawa...
A new species of the rare genus Prionocrangon is described from the central Gulf of California, Mexico. This is the first record for this genus of Crangonidae in the east Pacific which is otherwise widely distributed in the Atlantic, Pacific and Indian oceans. Prionocrangon incisum sp. nov. differs from all other known species of Prionocrangon by t...
Uroptychus pubescens Faxon, 1893, was collected off the east coast of the Baja California Peninsula, in the southern Gulf of California, and represents the second known record for this species since it was captured by the "Albatross" in 1891. This new material is described and compared to the only syntype available in the Smithsonian collections. T...
Specimens of galatheids Janetogalathea californiensis (Benedict, 1902) were collected in the northern portion of the Central Gulf of California and represent the third record for this species in the area. Illustrations of the material collected in the Gulf of California are provided and some differences are noted when compared to the description of...
Specimens of galatheids Janetogalathea californiensis (Benedict, 1902) were collected in the northern portion of the Central Gulf of California and represent the third record for this species in the area. Illustrations of the material collected in the Gulf of California are provided and some differences are noted when compared to the description of...
Tetralobistes gen. nov., a presently monotypic genus of hermit crab of the family Diogenidae, is described to accommodate a new species, Tetralobistes bicentenarius sp. nov. In many characters, Tetralobistes gen. nov. is similar to Areopaguristes Rahayu & McLaughlin, 2010, Paguristes Dana, 1851, and Pseudopaguristes Mclaughlin, 2002. However, it di...
Based on a thorough revision of the Diogenidae (Crustacea: Decapoda: Anomura) of the eastern Pacific, 55 species belonging to 11 genera are reported from the region. Species of Paguristes are by far the most abundant (22 species, 40%). As a group, they are found from the intertidal to the upper slope (460m), in virtually all habitats, with a signif...
A new species of Munida (Galatheidae) is described based on three specimens collected off the west coast of Baja California. The new species is distinguished from all other species of Munida known from the East Pacific region by the combination of the following characters: carapace with a transverse row of spines next to the posterior margin, supra...
An exhaustive revision of material identified as Dardanus sinistripes (Stimpson, 1859) in collections in Mexico and the USA, and of new material of Dardanus collected in several localities in the Eastern Pacific revealed the existence of five undescribed species closely related to D. sinistripes. Detailed study of this material allows us to redescr...
A new species of the hermit crab genus Paguristes, P. haigae n. sp., is described and illustrated from material collected in the Gulf of California, Mexico. Paguristes haigae n. sp. closely resembles P. tortugae Schmitt, 1933, from the western Atlantic and P. aztatlanensis Glassell, 1937 and P. oculiviolaceous Glassell, 1937, both previously known...
A new species of the hermit crab genus Paguristes, P. haigae n. sp., is described and illustrated from material collected in the Gulf of California, Mexico. Paguristes haigae n. sp. closely resembles P. tortugae Schmitt, 1933, from the western Atlantic and P. aztatlanensis Glassell, 1937 and P. oculiviolaceous Glassell, 1937, both previously known...
A new species of hermit crab, Stratiotes mclaughlinae n. sp., is described from the Pacifi c coast of Mexico, and represents the fi rst record of this genus from this region. Th e only discrepancy with Stratiotes diagnosis consists in the absence in S. mclaughlinae n. sp. of pleopods on female fi rst somite. Th e new species also diff ers from all...
Material belonging to three species of hermit crabs [Paguristes bakeri Holmes, 1900, Pagurus gladius (Benedict, 1892), and Pagurus smithi (Benedict, 1892)] was collected during a series of research cruises along the Pacific coast of Mexico. In many cases, environmental conditions (i.e., depth, substrate, epibenthic water temperature and dissolved o...
Specimens of the pagurid crab, Rhodochirus hirtimanus (Faxon, 1893) were collected in the central Gulf of California and represent a significant extension of its known range to the north. The species is redescribed and illustrated, including buccal appendages that had been only briefly described previously; a detailed description of setation is als...
The arched box crab (Calappa convexa) is commonly caught in gillnets as by-catch of the spiny lobster (Panulirus spp.) fishery in southern Sinaloa, Mexico, a locally exploited fishing resource. Crabs were sampled monthly from May 1998 to April 1999 and a total of 274 specimens (132 males and 142 females) were captured. The distribution of the resou...