Este trabajo presenta un avance de investigación interdisciplinaria que desarrolla perspectivas teóricas, analíticas e interpretativas, para el estudio situado de la alimentación, salud, nutrición y la cultura, en Latinoamérica, particularmente en el puerto y ciudad turística de Mazatlán, Sinaloa, México. Las miradas teóricas y las rutas metodológicas parten de considerar que, además de los evidentes aportes nutricionales, los alimentos son portadores de significados, entendidos éstos como atributos conferidos culturalmente. La revisión bibliográfica identificó una variedad de especies de patógenos potencialmente zoonóticos, transmitidos por peces en hospedadores acuáticos que son comunes en comunidades costeras del mundo, destacando la importancia del consumo de pescado crudo en la transmisión de parásitos y posible zoonosis con afección al humano. Asimismo, se exp...

El objetivo de este estudio fue investigar algunos factores en el comportamiento durante la transmisión del monogeneo Gyrodactylus sp. y determinar si la madurez y estado reproductivo del parásito pueden ser empleados en la colonización de nuevos hospederos. El modelo de transmisión empleado fue Gyrodactylus gasterostei Glaser, 1974 y G. arcuatus Bychowsky 1933 - Gasterosteus aculeatus L. que migraron de peces sacrificados. Los experimentos en el laboratorio incluyen la determinación de la madurez (presencia del órgano copulador masculino) y reproductiva (presencia de la hija en útero), y determinar los factores de comportamiento que influyen en la elección de los parásitos para migrar a un nuevo hospedero. Este estudio es el primer enfoque experimental en el comportamiento con relación a diferentes etapas de desarrollo en dos especies de Gyrodactylus utilizando el mismo modelo...

Laboratory mice Mus musculus Linnaeus, 1758 are commonly used as important models in veterinary and biomedical research. Forty laboratory mice were collected in four different vivaria at the National Autonomous University of Mexico and evaluated for parasites. Examination of intestinal organs revealed nematode Aspiculuris tetraptera (Nitzsch, 1821) Schulz, 1927 (n=104) and Syphacia obvelata Rudolphi, 1802 (n=1582). Astatistical study was performed to determine host sex preference of infection. Cestode parasites, Rodentolepis nana (Siebold, 1852) synonymous (Hymenolepis nana and Vampirolepis nana) including a potential cause of human cestodiasis, with an emphasis on those pathogens with zoonotic potential. Evident ectoparasites were not present. A review reporting parasites on rodents employed on vivaria in Mexico was elaborated from a database at the National Helminths Collection of the ...

This study shows the results of an interdisciplinary investigation on the conservation of the Olive Ridley sea turtle (Lepidochelys olivacea Eschscholtz, 1829), a species that is considered endangered according to the Mexican Standard (NOM-059-SEMARNAT-2010). This study shows the way in which some national institutions interact with tourist activity on urban beaches on the Mexican Pacific coast, particularly the Mazatlan Aquarium in Sinaloa. This aquarium is a para-statal entity governed by the city council of the city-port of Mazatlan, whose protection program for the Olive Ridley turtle is nationally recognized. For this study, interdisciplinary theoretical and methodological perspectives were built between fields of marine biology and comprehensive social sciences. The results show that, during two decades, 11,359 nests have been protected; 1,059,658 eggs recovered; 869,854 turtles re...

El presente estudio reporta la presencia del parásito dactylogirido Heteropriapulus heterotylus en las branquias de peces invasivos Pterygoplichthys pardalis y P. disjunctivus en ecosistemas de agua dulce del sureste de México. Este studio representa un nuevo registro de hospederos para este parásito y un nuevo registro geográfico de parasitos en P. disjunctivusy P. pardalis. Además, se examinaron los aspectos ecológicos de la prevalencia, abundancia media e intensidad media de H. heterotylus a través de un ciclo anual. Se recolectaron un total de 223 peces, incluyendo 94 de P. disjunctivus y 129 de P. pardalis. Se encontró un total de 148 (66.3%) peces que estaban infectados con este monogeneo, 79 de P. pardalis y 69 de P. disjunctivus. H. heterotylus se registró exclusivamente en los arcos branquiales en ambos peces. En ambos peces la abundancia media de este parasito mostró ...

El objetivo de este estudio, fue investigar la ocurrencia de copépodos parásitos (Caligidae: Siphonostomatoida) en la raya pinta Aetobatus narinari considerada una especie amenazada mundialmente. En el sur de México, la raya manchada representa una fuente tradicional de alimento, alcanzando el valor económico más alto con respecto a otros elasmobranquios. Durante un reciente estudio de parásitos de peces de tres localidades del estado de Campeche (sur del Golfo de México), ocho individuos de A. narinari capturados por pescadores locales fueron examinados por ectoparásitos y cinco especies diferentes de copépodos fueron registrados en la piel de este pez: Alebion sp. Krøyer, 1863; Caligus dasyaticus Rangnekar, 1957; Caligus haemulonis Krøyer, 1863; Euryphorus sp., Milne Edwards H., 1840; Lepeophtheirus acutus Heegaard, 1943 and Lepeophtheirus marginatus Bere, 1936. Este trabajo...

El presente estudio es parte de una investigación en curso de los copépodos parásitos de peces de las aguas costeras en el Estado de Campeche (sur del Golfo de México). El objetivo de este trabajo fue describir las especies de copépodos parásitos que se encontraron en cinco especies de tiburones: Carcharhinus leucas (Müller & Henle, 1839), Carcharhinus limbatus (Müller & Henle, 1839), Carcharhinus plumbeus (Nardo, 1827), Rhizoprionodon terraenovae (Richardson, 1836), y Sphyrna tiburo (Linnaeus, 1758). Aexcepción de R. terraenovae, todas las especies de tiburones estuvieron infectados al menos con una especie de copépodo. Un total de ocho especies de copépodos fueron encontrados: Nesippus orientalis Heller, 1865, Nemesis sp. y Paralebion elongatusWilson C.B., 1911 en C. leucas (n = 6); Tuxophorus caligodesWilson C.B., 1908, Lepeophtheirus longispinosus Wilson C.B., 1908 y Panda...

The objective of this multidisciplinary interpretive research was to identify the motivations by which the national resident and tourists have a tendency to consume “rock oysters” Crassostrea iridescens (Hanley, 1854) during their daily lives or their stay in the port of Mazatlán, Mexico. The typical Mazatleca cuisine is of great interest, preferably for the consumer and generates a source of economic income for its residents. In Mazatlán, Sinaloa there is the custom of some coastal regional cuisines such as fish ceviche, the consumption of raw shellfish such as the oyster C. iridescens and aguachile (raw shrimp seasoned with lemon, salt, pepper, and serrano chili). An analysis of the sociocultural scenario and the consumer's interest in eating rock oysters was carried out. The relationship between the regional and tourist traditional food was highlighted in these questions: i) if ...

Tourist activity in Mazatlán, Mexico involves various attractions, including the consumption of raw seafood, which leads to a greater risk of infections transmitted by microorganisms, since tourists are unaware of the dangers. The study aims to assess nutritional status and its association with gastrointestinal diseases in tourists hospitalized during the period 2014 - 2018 in Mazatlán Sinaloa. This research is retrospective with a quantitative and cross-sectional approach, based on a non-experimental, descriptive, and correlational design. The technique used was anthropometric and a validated survey of dietary practices for seafood consumption on the clinical records of 96 patients from a private hospital in Mazatlán. Biochemical parameters such as glucose, hemoglobin, cholesterol, and triglycerides were reviewed, and anthropometric parameters of weight and height with BMI calculatio...

The aim of this investigation was to analyze the biological and environmental characteristics concerning the development of tourism around the California sea lion Zalophus californianus (Lesson, 1828) in the Bay of Mazatlan, Mexico. The California sea lion, according to recent studies, inhabits the coasts of northwestern Mexico during the months from November to May (6 months). In this period, around 35,531 tourists visited this aquatic animal in its natural habitat, just 2 km from the coast. Th is economic activity generated an annual income for tourism services of $11,425,120.00 M.N ($626,517.24 USD) that off er ecotourism of the sea lion as a profitable attraction in the bay known as the Pearl of the Mexican Pacifi c. In the Bay of Mazatlan, this marine mammal enjoys a privileged place on the boardwalk, where there is a monument highlighting its importance in the port. Th is animal is...

El objetivo de esta investigación fue describir por primera vez al copépodo ectoparásito en la piel del atún aleta amarilla Thunnus albacares (Bonnaterre, 1788) en el estado de Sinaloa en las costas del Pacífico mexicano. Se identificaron cinco copépodos Pennella filosa L. (Copepoda: Pennellidae), los miembros de este género se caracterizan por la forma, el tamaño y la longitud del parásito, el tipo de hospedero, la disposición de las papilas cefalotorácicas, la segmentación de la primera y la segunda antena, y la estructura de las plumas abdominales. Este estudio es significativo porque es la primera vez que se describe este copépodo de la familia Pennelidae que parasita al atún Thunnus albacares, que es considerado una especie de pez de gran valor que se captura todo el año tanto por la pesca costera comercial como por la pesca recreativa en Sinaloa. México. Aunque exis...

En este trabajo se presenta un estudio cualitativo y cuantitativo de la fauna de copépodos parásitos del pez vermillon o rockotrojo Sebastes miniatus de las costas del Pacífico de Baja California, México. Se evaluó la composición de las especies de copépodos parásitos así como la abundancia, prevalencia e intensidad de infección durante un ciclo anual (2005). Las especies de copépodos identificados fueron: Lepeophtheirus rotundipes, Naobranchia scorpaenae y Clavellotis sebastidis. De los cuales N. scorpaenae y C. sebastidis mostraron preferencia por las branquiespinas, mientras que L. rotundipes mostró preferencia por los arcos branquiales. La especie más abundante fue C. sebastidis, mientras que la prevalencia fue mayor en L. rotundipes. La intensidad de infección fue relativamente mayor en L. rotundipes. La abundancia media, prevalencia e intensidad de infección mostraro...

The objective of this study was to determine the presence of metazoan parasites and epibionts in the pleasure oyster Crassostrea corteziensis (Hertlein) inhabiting two coastal and fishing localities in the Mexican Pacific state of Sinaloa. 30 oysters were collected in the fishing cooperative of Playa Norte in the bay of Mazatlán, Sinaloa and a comparison made with the presence of parasites in oysters in the "Ceuta"coastal lagoon. Inspection of oysters in the coastal lagoon revealed the presence of 36 encapsulated metacercariae of the Acanthocolpidae family in the gonad of the oyster Crassostrea corteziensis. Six metacercariae were found in the Mazatlán bay Playa Norte area: three of sp. 1 (Family Hemiuridae) in the mantle, a specimen of sp. 2 (Family Fellodistomidae) in the digestive gland and a metacercaria sp3. unidentified in the mantle and a metacercaria (Family Zoogonidae) in the ...

The dynamics of a new segment of tourist activity bases its action on creating a link between the subject, the experience and the environment, these are the most important conditions for the tourist to choose the destination to visit. Environmental education within ecotourism is a strategic tool to promote respect for wildlife. The objective of this work was to develop an analysis of the impact of environmental education on the conservation of sea turtles in Mazatlán, Sinaloa, Mexico throughout three decades of recorded biological data in order to promote sustainable tourism with more socially solid attitudes. In Mazatlán Sinaloa, every year, during the sea turtle nesting season (July-October), numerous ecotourist subjects are interested in these endangered reptiles, in order to help protect and conserve these animals. There are regional and federal government public institutions that ...

The aim of this investigation was to analyze the biological and environmental characteristics concerning the development of tourism around the California sea lion Zalophus californianus (Lesson, 1828) in the Bay of Mazatlan, Mexico. The California sea lion, according to recent studies, inhabits the coasts of northwestern Mexico during the months from November to May (6 months). In this period, around 35,531 tourists visited this aquatic animal in its natural habitat, just 2 km from the coast. Th is economic activity generated an annual income for tourism services of $11,425,120.00 M.N ($626,517.24 USD) that off er ecotourism of the sea lion as a profitable attraction in the bay known as the Pearl of the Mexican Pacifi c. In the Bay of Mazatlan, this marine mammal enjoys a privileged place on the boardwalk, where there is a monument highlighting its importance in the port. Th is animal is...

Mazatlán Bay is located in the northwest of the Mexican Pacifi c Ocean; it is a popular place for national and international beach vacations. Th ere is a small colony of sea lions, Zalophus californianus (Lesson, 1828) in an area called “Roca Tortuga (RT)” which is included in a protected natural area 2 km from the coast and is considered a tourist attraction. Recreational boats carry out visitor encounters and therefore come into close contact with sea lions. However, there is no direct control over tourist visits to the colony during the high season. Th e objective of this research was to evaluate the experience of tourists in this colony. Surveys were used to analyze the tourist perception towards the conservation of sea lions and direct observations (tourist-sea lion interactions) were made to validate the results. Less than 15% of people received some kind of information about ...

Mazatlán Bay is located in the northwest of the Mexican Pacifi c Ocean; it is a popular place for national and international beach vacations. Th ere is a small colony of sea lions, Zalophus californianus (Lesson, 1828) in an area called “Roca Tortuga (RT)” which is included in a protected natural area 2 km from the coast and is considered a tourist attraction. Recreational boats carry out visitor encounters and therefore come into close contact with sea lions. However, there is no direct control over tourist visits to the colony during the high season. Th e objective of this research was to evaluate the experience of tourists in this colony. Surveys were used to analyze the tourist perception towards the conservation of sea lions and direct observations (tourist-sea lion interactions) were made to validate the results. Less than 15% of people received some kind of information about ...

The objective of this study was to describe the occurrence of gastrointestinal diseases cases related to the practice of gastronomic tourism in Mazatlán, Sinaloa, on the Mexican Pacifi c coast, in a 60 months period of analysis spanning the years 2014-2018. A total of 39 patient clinical records in a health private institution as analysed, 32% are national tourists and 68% international; 71% of the cases were female and 29% male. Of the cases reported in this work, the patients with hypertension were the most vulnerable group. A total 84.6% of the patients were diagnosed with acute infectious gastroenteritis, 5% gastroenterocolitis, 2.6% with intestinal amoebiasis, typhoid fever, rotavirus and food poisoning, respectively. Regarding signs and symptoms, 100% had diarrhoea, 33% dehydration, 41% nausea, 37.5% vomiting, 46% abdominal pain, 20% presented fever. In the coproparasitological ex...

The objective of this study was to describe the occurrence of gastrointestinal diseases cases related to the practice of gastronomic tourism in Mazatlán, Sinaloa, on the Mexican Pacifi c coast, in a 60 months period of analysis spanning the years 2014-2018. A total of 39 patient clinical records in a health private institution as analysed, 32% are national tourists and 68% international; 71% of the cases were female and 29% male. Of the cases reported in this work, the patients with hypertension were the most vulnerable group. A total 84.6% of the patients were diagnosed with acute infectious gastroenteritis, 5% gastroenterocolitis, 2.6% with intestinal amoebiasis, typhoid fever, rotavirus and food poisoning, respectively. Regarding signs and symptoms, 100% had diarrhoea, 33% dehydration, 41% nausea, 37.5% vomiting, 46% abdominal pain, 20% presented fever. In the coproparasitological ex...

The objective of this work was to identify the species of parasitic nematodes that infect the gonads of female “birdfish” Hyporhamphus naos Banford & Collette, 2001 (Hemiramphidae: Beloniformes). This species of fish is considered key in terms of the local artisanal fishery index, it is economically transcendental for fishermen and regional consumers who annually wait for its arrival in the bay to be consumed. The nematode Philometra Costa, 1845 (Nematoda: Philometridae) was identified parasitizing the female gonads of H. naos. Two immature female nematodes were found (prevalence 8%, mean abundance 0.08 and mean intensity 1). New information is recorded on the distribution of parasitic nematodes of this genus in this area of ​​the tropical Pacific and a new host. This is the first record of Philometra parasitic on female gonads in H. naos fish in Mexico. The first world recor...