Ciencias Marinas最新文献

{"title":"Effect of 4 microalgal diets on the proximal composition, chlorophyll concentration, and total carotenoid content in Artemia franciscana","authors":"M. I. Millán-Almaraz, D. López-Peraza, M. Nieves-Soto, M. M. Peraza-Yee","doi":"10.7773/cm.y2023.3381","DOIUrl":"https://doi.org/10.7773/cm.y2023.3381","url":null,"abstract":"Microalgae are the primary source of food for Artemia franciscana. In turn, Artemia serve as live food for various species in culture. The chemical composition of Artemia is of great importance because it affects the nutritional quality of the organisms produced in aquaculture systems. For this reason, the present study aimed to characterize the nutritional value, proximal composition, concentration of chlorophyll a and b, and total carotenoid content in the microalgae Thalassiosira weissflogii, Chaetoceros muelleri, Tetraselmis suecica, and Nannochloropsis sp., which were used to feed juvenile A. franciscana for 6 h. Artemia juveniles fed with these microalgae species exhibited higher concentrations of proteins, carbohydrates, lipids, chlorophyll a and b, and total carotenoids than those in the control. The organisms fed with Tetraselmis suecica presented the highest content of chlorophyll b, while those fed with Thalassiosira weissflogii and Chaetoceros muelleri showed the highest values of total carotenoids and chlorophyll a.","PeriodicalId":50702,"journal":{"name":"Ciencias Marinas","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138598307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Growth, survival, and morphometric relationships of Crassostrea corteziensis cultivated during the nursery stage in oyster bags at different tidal levels, in Boca de Camichín, Nayarit, Mexico","authors":"Alfonso N Maeda-Martínez, Avicenia G García-Murillo, Daniel Espinosa-Chaurand, Rodolfo Garza-Torres, Ricardo García-Morales","doi":"10.7773/cm.y2023.3388","DOIUrl":"https://doi.org/10.7773/cm.y2023.3388","url":null,"abstract":"The optimal tide height at which the intertidal oyster bed system (IOBS) should be installed to cultivate Crassostrea corteziensis in Boca de Camichín (BC), Nayarit, Mexico, during the intermediate grow-out stage (39.3–60.2 mm in shell length) was determined. Temperature, salinity, chlorophyll a (Chla), and turbidity were recorded 3 times a day. A trophic state index (TSI) was calculated with Chla and turbidity data. Three treatments corresponding to tide levels were tested: (1) high level (14 cm above mean sea level [MSL], emersion time [ET] = 56.4% of the total duration of the experiment), (2) intermediate level (MSL, ET = 48.6%), and (3) low level (41 cm below MSL, ET = 32.1%). Gross growth rates and absolute and relative monthly growth rates were calculated to identify periods with highest growth relative to environmental conditions. Finally, the effect of the treatments on the dimensions and weight of the oysters was studied. The results indicate that BC water was mesotrophic in April–June and eutrophic in July–August. The low tide level was the best for IOBS operation, with growth rates of 0.15, 0.10, and 0.07 mm·d–1 in shell length, width, and thickness, respectively, and 0.204 g·d–1 wet weight. Cumulative mortality was lower in the low (18.5%) and intermediate (16.4%) treatments. Shell thickness was significant reduced (P < 0.05) in the high treatment and total wet weight was reduced in the high and intermediate treatments. The results of this study offer a viable and different alternative to the cultivation of C. corteziensis in strings that is currently carried out in Boca de Camichín, Nayarit, Mexico.","PeriodicalId":50702,"journal":{"name":"Ciencias Marinas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135393259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influencia de un giro ciclónico y un frente termohalino en la estructura poblacional de Centropages furcatus en la bahía de La Paz, golfo de California","authors":"Erika Mojica-Ramírez, María Adela Monreal-Gómez, Sergio Hernández-Trujillo, David Alberto Salas-de León","doi":"10.7773/cm.y2023.3370","DOIUrl":"https://doi.org/10.7773/cm.y2023.3370","url":null,"abstract":"Se analizó la estructura poblacional de Centropages furcatus asociada a estructuras hidrográficas a finales de la primavera de 2004. La distribución de los diferentes estadios de copepoditos de C. furcatus fue analizada a partir de las muestras de zooplancton obtenidas con una red bongo. En la bahía de La Paz, la hidrografía y la velocidad geostrófica relativa al fondo revelaron la presencia de un giro ciclónico en la cuenca Alfonso y un frente termohalino cerca de Boca Grande. La distribución de la concentración de clorofila a integrada verticalmente mostró valores máximos en el centro del giro y en la región del frente, lo que evidenció que ambas estructuras hidrográficas favorecen la productividad biológica debido al flujo de nutrientes hacia la capa eufótica en el giro y a la acumulación de nutrientes en el frente termohalino. Los resultados mostraron que la variación espacial de C. furcatus estuvo influenciada por ambas estructuras hidrográficas. En el giro ciclónico se observó una distribución diferencial por etapa de desarrollo, con mayor densidad poblacional de los primeros estadios de copepoditos en el centro del giro, como consecuencia de la alta concentración de clorofila a por el enriquecimiento de nutrientes en la capa eufótica, debido al bombeo de Ekman. La densidad poblacional de copépodos fue mayor en el frente termohalino que en el interior del giro ciclónico, debido a que el frente actúa como una zona reproductiva de la especie que mantiene una densidad poblacional estable para los adultos de la bahía y del golfo de California.","PeriodicalId":50702,"journal":{"name":"Ciencias Marinas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136014592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Estado de explotación y perspectivas de manejo pesquero del marlin rayado (Kajikia audax) en el océano Pacífico mexicano","authors":"J Gabriel Díaz-Uribe, Alexander Klett-Traulsen, Enrique Morales-Bojórquez, Hugo Aguirre-Villaseñor, Michel Dreyfus-León, Heriberto Santana-Hernández, Marcela S Zúñiga-Flores","doi":"10.7773/cm.y2023.3362","DOIUrl":"https://doi.org/10.7773/cm.y2023.3362","url":null,"abstract":"Se evaluó el estado de explotación del marlin rayado en el Pacífico mexicano con datos históricos (1963-2014) de captura y esfuerzo de flotas comerciales y deportivas, incluso datos de captura incidental. Se estimaron 8 indicadores de abundancia relativa independientes para ajustar un modelo dinámico de biomasa por máxima verosimilitud. Para el periodo más reciente (2015-2019), se evaluó el estado de explotación a través de simulaciones hechas con el modelo ajustado, y se tomó como referencia los datos disponibles de captura por unidad de esfuerzo de las flotas deportivas. Los resultados indicaron que hasta 2014, la abundancia del marlin rayado ha pasado por 3 etapas diferentes. La primera fue una tendencia decreciente de 1964 a 1977, donde las capturas y el esfuerzo de las flotas comerciales excedieron, respectivamente, el máximo rendimiento sostenible (MRS) y el esfuerzo para alcanzar el MRS. La segunda ocurrió de 1977 a 1990, y fue una tendencia estable de baja abundancia, inferior a la abundancia cuando se alcanza el MRS; este cambio se relacionó con la reducción del esfuerzo de las flotas comerciales, aunque con capturas superiores al MRS. La tercera ocurrió de 1990 a 2014, y mostró una tendencia al incremento de la abundancia, debido al cese de operaciones de las flotas comerciales. Este incremento ha sido lento debido al desarrollo de la pesca deportiva y al incremento de las capturas incidentales. Después de 2014, el indicador para las flotas deportivas sugirió un cambio en la abundancia; de acuerdo con las simulaciones, la mortalidad por pesca fue insuficiente para explicar dicho cambio. Se plantea como hipótesis que la mortalidad natural del marlin rayado ha sido alta desde la década de 2010. Se discuten las condiciones que pudieron influir en esta situación y sus implicaciones en el manejo pesquero.","PeriodicalId":50702,"journal":{"name":"Ciencias Marinas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135483490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluación de diferentes niveles de proteína y lípidos dietéticos en el crecimiento, la eficiencia alimenticia y los índices biométricos y hematológicos de juveniles de robalo blanco Centropomus viridis","authors":"María Isabel Abdo-de la Parra, Luz Estela Rodríguez-Ibarra, Leonardo Ibarra-Castro, Juan Manuel Martínez-Brown, Carlos Alfonso Álvarez-González, Emyr Peña, Gabriela Velasco-Blanco, Patricia Domínguez-Jiménez, Gustavo Rodríguez-Montes de Oca","doi":"10.7773/cm.y2023.3368","DOIUrl":"https://doi.org/10.7773/cm.y2023.3368","url":null,"abstract":"Se llevó a cabo un experimento para evaluar el efecto de varios niveles de proteína y lípidos dietéticos en el rendimiento de juveniles de robalo blanco (Centropomus viridis). Se realizó un diseño factorial 4 × 2 con 4 niveles de proteína (40%, 46%, 52% y 58%) y 2 niveles de lípidos (10% y 13%), con 3 replicados por tratamiento. Los peces con un peso inicial de 14.80 ± 0.80 g se alimentaron a saciedad aparente 3 veces al día durante 6 semanas. El crecimiento de los juveniles no presentó diferencias significativas entre los tratamientos. La eficiencia alimenticia solo fue afectada por el nivel de proteína en la dieta, y la mejor tasa de eficiencia alimenticia se obtuvo con las dietas con 52% de proteína; el índice de eficiencia proteica fue significativamente menor con las dietas con 58% de proteína. El índice hepatosomático disminuyó al aumentar el contenido de proteína, y el índice de grasa peritoneal aumentó con el nivel de lípidos en la dieta. El factor de condición no fue afectado por el nivel de proteína o lípidos dietéticos. El hematocrito y la proteína total del plasma fueron significativamente mayores con las dietas con 40% de proteína; la glucosa y los triglicéridos en la sangre fueron afectados por ambos nutrientes. Se concluye que los juveniles de C. viridis pueden ser alimentados con dietas que contengan 40% de proteína y 10% de lípidos y una relación proteína/energía de 20.69 mg·kJ–1, bajo las condiciones experimentales de este estudio.","PeriodicalId":50702,"journal":{"name":"Ciencias Marinas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136375509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Micromollusk families in 2 contrasting seasons in Bahia de los Angeles, Gulf of California, Mexico","authors":"E. Solana‐Arellano, V. Díaz‐Castañeda, O. Flores-Uzeta","doi":"10.7773/cm.y2023.3365","DOIUrl":"https://doi.org/10.7773/cm.y2023.3365","url":null,"abstract":"Marine mollusks provide important ecosystem services. They create habitats for benthic organisms, filter water, biodeposit organic carbon in the seafloor, and serve as food sources for other organisms. Studies of mollusk diversity require time-consuming methods to process samples and identify species. Thus, it is not surprising that most studies have focused on macromollusks that can be collected and processed easily, ignoring micromollusk species. Without understanding the ecology and distributions of micromollusks properly, it is impossible to assess their populations and implement adequate conservation measures. Here we present microgastropods collected in Bahia de los Angeles at the family level for September 2013 (summer) and February 2014 (winter). During each season, we sampled 6 coastal sediment stations, and analyzed depth, salinity, temperature, granulometry, and organic matter. A total of 20,353 specimens were collected: 15,310 in summer and 5,043 in winter. Seven micromollusk families were identified: Barleeidae, Caecidae, Cerithiidae, Eulimidae, Pyramidellidae, Rissoidae, and Tornidae. Caecidae and Barleeidae exhibited the highest densities among all families in summer and winter, respectively (278,044 ind·m–2, 142,222 ind·m–2). The lowest densities for summer and winter were observed for the Tornidae family (~1,867 ind·m–2, ~1,411 ind·m–2). Barleeidae, Caecidae, Cerithiidae, Rissoidae, and Tornidae were classified as herbivorous and detritivorous; Eulimidae and Pyramidellidae, as carnivorous and ectoparasitic. Tornidae and Eulimidae showed symbiotic relationships with various invertebrate species. The Bayesian analysis of variance indicated a high probability of differences only in summer (BF > 3). When comparing the stations in both periods, all stations, except station 6, showed differences between periods (BF > 3). The canonical correlation analysis indicated some associations between family abundances and temperature. This study provides valuable information that expands the knowledge of micromollusk biodiversity in the coastal area of Bahia de los Angeles, an important site for conservation in Mexico.","PeriodicalId":50702,"journal":{"name":"Ciencias Marinas","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48584832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Decline of one of the southernmost northern elephant seal (Mirounga angustirostris) colonies and its relationship with a warm sea environment","authors":"E. Rodríguez-Rafael, M. C. García-Aguilar, F. Galván‐Magaña, F. Elorriaga-Verplancken","doi":"10.7773/cm.y2023.3361","DOIUrl":"https://doi.org/10.7773/cm.y2023.3361","url":null,"abstract":"Over several decades, air temperature and sea surface temperature (SST) have increased in the northeastern Pacific, as has the frequency of large-scale warm anomalies in SST. The objective of this study was to evaluate the impact of these warm anomalies on the production of northern elephant seal (Mirounga angustirostris; NES) pups from the colony of the San Benito Archipelago, located in the central-western region of the Baja California Peninsula. Pup and adult female counts from the 2002 to 2019 breeding seasons were compiled to determine the trend in the abundance of the colony and its current state. In addition, birth rate variations during the study period were assessed. Likewise, the presence of warm anomaly events in the SST in the potential foraging area of adult females (PFA) was analyzed. The San Benito colony decreased at an average annual rate of 3.6% from 2002 to 2019, with an estimated abundance of 4,723 individuals (95% CI: 3,821–5,615) in 2019. However, the birth rate remained constant (mean 0.68 ± 0.08), even though several warm anomaly events associated with El Niño and The Blob phenomena were detected in the PFA. Our results suggest that large-scale warm anomalies in the SST do not severely impact NES pup production, thus the decline of the San Benito colony since the late 1900s could be due to other environmental factors, such as the increase in air temperature associated with climate change.","PeriodicalId":50702,"journal":{"name":"Ciencias Marinas","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44911687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Composición y diversidad espaciotemporal de la comunidad de aves acuáticas en la laguna de las Ilusiones, Tabasco, México","authors":"Nelly Alejandra Jerez-Ramírez, S. L. Arriaga-Weiss, Gorgonio Ruiz-Campos, Lilia María Gama-Campillo, Miguel Ángel Salcedo-Mesa, Claudia Villanueva-García, E. E. Mata-Zayas, J. D. D. Valdez-Leal","doi":"10.7773/cm.y2023.3355","DOIUrl":"https://doi.org/10.7773/cm.y2023.3355","url":null,"abstract":"En la laguna de las Ilusiones, Villahermosa, Tabasco, México, las especies de aves interactúan con elementos antrópicos del paisaje. Se realizaron avistamientos de aves acuáticas con el método de conteo por punto fijo durante la temporada de secas y de lluvias del año 2020 en 12 sitios de muestreo en la laguna. Se registraron variables urbanísticas, físicoquímicas del agua, de vegetación y de macrohábitats para evaluar su influencia en las aves acuáticas. Se registró un total de 1,134 individuos pertenecientes a 8 órdenes, 12 familias y 25 especies. Las especies más avistadas fueron Ardea alba, Egretta thula y Butorides virescens. La diversidad de especies (índice de Shannon) fue mayor en la temporada de secas (H = 2.40 bits) y menor en la temporada de lluvias (H = 1.89 bits). El análisis canónico demostró que la riqueza de especies disminuyó a medida que incrementó el porcentaje de urbanización en las inmediaciones de los sitios de muestreo.","PeriodicalId":50702,"journal":{"name":"Ciencias Marinas","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47130866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clasificación de los vientos de Santa Ana para la evaluación de su potencial eólico en La Rumorosa, Baja California, México","authors":"Marlene Zamora-Machado, Alejandro Adolfo Lambert-Arista, O. R. García-Cueto, Oscar Alfredo Jaramillo-Salgado, Elia Leyva-Sánchez, Rafael Carlos Reynaga-López, Jesús Rigoberto Herrera-García, Noemí Lizárraga-Osuna, Rosa Citlalli Anguiano-Cota","doi":"10.7773/cm.y2023.3358","DOIUrl":"https://doi.org/10.7773/cm.y2023.3358","url":null,"abstract":"La región de La Rumorosa, localizada en el noroeste de México, se caracteriza por sus fuertes velocidades en la magnitud del viento a nivel local, lo que ha originado la instalación de parques eólicos. En esta zona, no se conoce de forma precisa la contribución de energía eléctrica eólica de los vientos de Santa Ana (VSA), que son parte del régimen de viento regional. Además los vientos de valle-montaña, los frentes fríos, las tormentas extratropicales y otros fenómenos meteorológicos, en conjunto, contribuyen a la totalidad de energía eléctrica generada. Por ello, este estudio se centra en clasificar, por un periodo temporal de 10 años (2005-2014), los eventos de VSA considerando las categorías: “débil”, “moderado” y “fuerte”. En el análisis se aplicaron criterios asociados a los parámetros de la magnitud de la velocidad promedio del viento, el gradiente de presión adimensional y la normalización de valores de presión, magnitud de la velocidad de ráfaga y magnitud de la velocidad promedio del viento. La clasificación propuesta proporciona información sobre el comportamiento de los VSA en la zona y, por ende, su contribución en la generación de energía eólica en La Rumorosa.","PeriodicalId":50702,"journal":{"name":"Ciencias Marinas","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48540537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wild leucistic Risso’s dolphins (Grampus griseus) in the Azores","authors":"J. Gomes-Pereira, S. Vieira, G. Dionísio","doi":"10.7773/cm.y2023.3341","DOIUrl":"https://doi.org/10.7773/cm.y2023.3341","url":null,"abstract":"Leucism has been reported in at least 14 cetacean species, including Risso’s dolphin (Grampus griseus). Risso’s dolphins with abnormal pigmentation were sighted and photographed north of Faial Island, Azores Archipelago, in 6 separate events between 2020 and 2023. In 2020, a calf and a juvenile/subadult were observed within a group of over 100 individuals. A leucistic calf with pale skin and dark eyes was observed in 2021, 2022, and 2023 in the same area followed by the same adult within a pod of about 12 individuals, including 3 juveniles, all with normal coloration. This is the first report of wild leucistic Risso’s dolphins in the Atlantic, which could be of interest in future local population and hypopigmentation studies on a dolphin species known to become completely white with age.","PeriodicalId":50702,"journal":{"name":"Ciencias Marinas","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48176778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}