Pub Date : 2021-01-09DOI: 10.22370/RBMO.2020.55.3.2578
E. Serrano, Robert W. Simpfendörfer, Jaime Paillaman, Juan Carlos Sánchez
The proximal composition, amino acids and fatty acid profile were determined in whole body of wild and captive southern hake (Merluccius australis) in order to evaluate the differences in nutrients content due to the nutritional quality of the feed consumed during broodstock conditioning of this species. Body composition of southern hake did not show significant differences in dry matter, protein or ash content between both studied groups. Conversely, lipid content was significantly higher in the whole body of captive fish compared to the wild fish. In addition, the concentration of linoleic, docosahexaenoic and eicosapentaenoic acids, showed significantly higher level in captive hake than the wild hake. Amino acids concentrations did not vary between fish, except threonine and taurine. Threonine concentration was higher in wild hake whereas taurine concentration was higher in captive hake. The results of this comparative study provide a better understanding of the effects of supplemented feed currently used to acclimate and maintain in captivity southern hake broodstock.
{"title":"Comparative studies on nutritional composition of captive and wild southern hake Merluccius australis broodstocks","authors":"E. Serrano, Robert W. Simpfendörfer, Jaime Paillaman, Juan Carlos Sánchez","doi":"10.22370/RBMO.2020.55.3.2578","DOIUrl":"https://doi.org/10.22370/RBMO.2020.55.3.2578","url":null,"abstract":"The proximal composition, amino acids and fatty acid profile were determined in whole body of wild and captive southern hake (Merluccius australis) in order to evaluate the differences in nutrients content due to the nutritional quality of the feed consumed during broodstock conditioning of this species. Body composition of southern hake did not show significant differences in dry matter, protein or ash content between both studied groups. Conversely, lipid content was significantly higher in the whole body of captive fish compared to the wild fish. In addition, the concentration of linoleic, docosahexaenoic and eicosapentaenoic acids, showed significantly higher level in captive hake than the wild hake. Amino acids concentrations did not vary between fish, except threonine and taurine. Threonine concentration was higher in wild hake whereas taurine concentration was higher in captive hake. The results of this comparative study provide a better understanding of the effects of supplemented feed currently used to acclimate and maintain in captivity southern hake broodstock.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122335530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-09DOI: 10.22370/RBMO.2020.55.3.2591
Karla Pérez-Araneda, Sheyla Zevallos, Natalia Arakaki, Alex Alex Gamarra, Patricia Carbajal, Florence Tellier
Harvest pressure on brown macroalgae of the Lessonia genus has increased in recent years in Peru and Chile, due to the high demand from the global hydrocolloid industry. After a taxonomic review, in 2012, the intertidal species Lessonia nigrescens was segregated into two species, being L. berteroana distributed in southern Peru and northern Chile (17-30°S). Based on genetic tools we confirm the identification as L. berteroana and report its presence up to 15°23’S. It is recommended to update the status of the species into Peruvian regulations and scientific publications.
{"title":"Lessonia berteroana en Perú: Comprobación de la identidad de la especie y diversidad genética en el borde norte de distribución","authors":"Karla Pérez-Araneda, Sheyla Zevallos, Natalia Arakaki, Alex Alex Gamarra, Patricia Carbajal, Florence Tellier","doi":"10.22370/RBMO.2020.55.3.2591","DOIUrl":"https://doi.org/10.22370/RBMO.2020.55.3.2591","url":null,"abstract":"Harvest pressure on brown macroalgae of the Lessonia genus has increased in recent years in Peru and Chile, due to the high demand from the global hydrocolloid industry. After a taxonomic review, in 2012, the intertidal species Lessonia nigrescens was segregated into two species, being L. berteroana distributed in southern Peru and northern Chile (17-30°S). Based on genetic tools we confirm the identification as L. berteroana and report its presence up to 15°23’S. It is recommended to update the status of the species into Peruvian regulations and scientific publications.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"45 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132747589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-09DOI: 10.22370/RBMO.2020.55.3.2588
M. F. Gauger, J. Caraveo-Patiño, E. Romero-Vivas
Bottlenose dolphins (Tursiops truncatus) are ecosystem sentinels. In the Gulf of California, Mexico, they are found in areas that overlap with human activities, as in the case of the Ensenada de La Paz lagoon. A custom-made recorder -moored at medium depth (2.0 m) in the entrance to the lagoon- recorded acoustic data from June to November 2017 (8 deployments; 293 h). Whistles -an indicative of bottlenose dolphin presences- were pooled over time to acquire acoustic encounters, which were analysed to infer continuity of animal presence and test for statistically significant differences between deployments, day and night, and hours. Whistles were recorded during all deployments and evidenced night-time presence of bottlenose dolphins in the lagoon. Significant differences of acoustic encounters were observed between ‘Jun-Jul’ and ‘Sep-Nov’. Acoustic encounters were higher at night but were not different at an hourly level. Acoustical data proved the continuous presence of bottlenose dolphins, highlighting the importance of the Ensenada de La Paz for their population. This initial study highlights the usefulness of long-term passive acoustic monitoring to inform stake holders involved in management and conservation plans.
宽吻海豚(Tursiops truncatus)是生态系统的哨兵。在墨西哥的加利福尼亚湾，它们被发现在与人类活动重叠的地区，比如恩塞纳达德拉巴斯泻湖。定制的记录仪系泊在泻湖入口的中深度(2.0米)，记录了2017年6月至11月的声学数据(8次部署;哨声——宽吻海豚存在的指示——随着时间的推移被收集起来，以获得声音相遇，分析这些声音来推断动物存在的连续性，并测试在部署、白天和黑夜以及时间之间的统计显著差异。在所有部署过程中都记录了哨声，并证明了泻湖中宽吻海豚的夜间存在。在“6 - 7月”和“9 - 11月”之间观察到显著差异。夜间的声音接触率较高，但在每小时的水平上没有差异。声学数据证明了宽吻海豚的持续存在，突出了Ensenada de La Paz对它们种群的重要性。这项初步研究强调了长期被动声学监测的有用性，可以为参与管理和保护计划的利益相关者提供信息。
{"title":"Passive acoustic monitoring of the bottlenose dolphin Tursiops truncatus to determine continuous presence in Ensenada de La Paz, Mexico","authors":"M. F. Gauger, J. Caraveo-Patiño, E. Romero-Vivas","doi":"10.22370/RBMO.2020.55.3.2588","DOIUrl":"https://doi.org/10.22370/RBMO.2020.55.3.2588","url":null,"abstract":"Bottlenose dolphins (Tursiops truncatus) are ecosystem sentinels. In the Gulf of California, Mexico, they are found in areas that overlap with human activities, as in the case of the Ensenada de La Paz lagoon. A custom-made recorder -moored at medium depth (2.0 m) in the entrance to the lagoon- recorded acoustic data from June to November 2017 (8 deployments; 293 h). Whistles -an indicative of bottlenose dolphin presences- were pooled over time to acquire acoustic encounters, which were analysed to infer continuity of animal presence and test for statistically significant differences between deployments, day and night, and hours. Whistles were recorded during all deployments and evidenced night-time presence of bottlenose dolphins in the lagoon. Significant differences of acoustic encounters were observed between ‘Jun-Jul’ and ‘Sep-Nov’. Acoustic encounters were higher at night but were not different at an hourly level. Acoustical data proved the continuous presence of bottlenose dolphins, highlighting the importance of the Ensenada de La Paz for their population. This initial study highlights the usefulness of long-term passive acoustic monitoring to inform stake holders involved in management and conservation plans.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133165023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-09DOI: 10.22370/RBMO.2020.55.3.2590
Tomás E. Isola, Bernardo G. Marques
The aim of this study was to determine the stock density effect on size and biomass on mussel Mytilus edulis platensis, at growth up phase ropes. These ropes were made using three initial stocking densities: 200, 300 and 400 mussels m-1 and hung on in a longline at Belvedere site on San Jorge gulf, Argentina. Stock density showed no influence on individual mussel biomass. Higher growth length was obtained at higher densities. According to these results, when the mussels are in the fattening or thinning out phase, the optimum stocking density would be 300 to 400 mussels m-1.
{"title":"Efecto de la densidad sobre el crecimiento en fase de engorde del mejillón, Mytilus edulis platensis, en el golfo San Jorge, Patagonia argentina","authors":"Tomás E. Isola, Bernardo G. Marques","doi":"10.22370/RBMO.2020.55.3.2590","DOIUrl":"https://doi.org/10.22370/RBMO.2020.55.3.2590","url":null,"abstract":"The aim of this study was to determine the stock density effect on size and biomass on mussel Mytilus edulis platensis, at growth up phase ropes. These ropes were made using three initial stocking densities: 200, 300 and 400 mussels m-1 and hung on in a longline at Belvedere site on San Jorge gulf, Argentina. Stock density showed no influence on individual mussel biomass. Higher growth length was obtained at higher densities. According to these results, when the mussels are in the fattening or thinning out phase, the optimum stocking density would be 300 to 400 mussels m-1.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115476750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-09DOI: 10.22370/RBMO.2020.55.3.2587
H. Pavés, Claudio N. Tobar, Alexis F. Santibañez, Diego Meier, Diego Miranda-Urbina, Francisco Olivera
Los mamíferos marinos (MM) son componentes clave de los ecosistemas marinos constituyéndose en importantes depredadores en ellos. Su monitoreo permite conocer el estado de sus poblaciones y la salud del ecosistema. Por esta razón, se determinará la diversidad, abundancia y distribución espacial y temporal de MM del centro-sur de Chile. Observadores científicos registraron presencia estacional de MM a lo largo de un año desde plataformas en tierra y mar (invierno-2016 a otoño-2017). Se identificaron 4 especies de MM con un total de ~12.000 avistamientos. La especie más frecuente fue el león marino (LMC, ~99%), luego el delfín chileno (DCh) y registros aislados de ballena franca austral y ballena azul. Los mayores avistamientos del LMC y cetáceos mayores se registraron en verano, mientras para DCh, fue en otoño. En Cobquecura se concentraron los mayores avistamientos de LMC (>80%). Los cetáceos mayores se avistaron a >1.500m de la costa y los DCh a <500m, entorno al río Itata. En el mar, los mayores avistamientos de LMC se registraron en primavera, durante el periodo de actividad pesquera, al igual que el mayor registro de lobos muertos. Pese a que la cantidad de MM identificados aquí, no es mayor a lo descrito para otras partes de Chile, se debe considerar que tres de estas especies están clasificadas bajo algún criterio de amenaza. Además, existe una de las más importantes agrupaciones de DCh y LMC del centro-sur de Chile, expuestas a importantes interacciones operacionales con la pesquería. Esto hace necesario establecer con prontitud medidas de protección del litoral para asegurar la conservación de estos mamíferos marinos en el centro-sur de Chile y con ello, en toda la costa chilena.
{"title":"Patrones de avistamientos y distribución de mamíferos marinos en el litoral centro-sur de Chile","authors":"H. Pavés, Claudio N. Tobar, Alexis F. Santibañez, Diego Meier, Diego Miranda-Urbina, Francisco Olivera","doi":"10.22370/RBMO.2020.55.3.2587","DOIUrl":"https://doi.org/10.22370/RBMO.2020.55.3.2587","url":null,"abstract":"Los mamíferos marinos (MM) son componentes clave de los ecosistemas marinos constituyéndose en importantes depredadores en ellos. Su monitoreo permite conocer el estado de sus poblaciones y la salud del ecosistema. Por esta razón, se determinará la diversidad, abundancia y distribución espacial y temporal de MM del centro-sur de Chile. Observadores científicos registraron presencia estacional de MM a lo largo de un año desde plataformas en tierra y mar (invierno-2016 a otoño-2017). Se identificaron 4 especies de MM con un total de ~12.000 avistamientos. La especie más frecuente fue el león marino (LMC, ~99%), luego el delfín chileno (DCh) y registros aislados de ballena franca austral y ballena azul. Los mayores avistamientos del LMC y cetáceos mayores se registraron en verano, mientras para DCh, fue en otoño. En Cobquecura se concentraron los mayores avistamientos de LMC (>80%). Los cetáceos mayores se avistaron a >1.500m de la costa y los DCh a <500m, entorno al río Itata. En el mar, los mayores avistamientos de LMC se registraron en primavera, durante el periodo de actividad pesquera, al igual que el mayor registro de lobos muertos. Pese a que la cantidad de MM identificados aquí, no es mayor a lo descrito para otras partes de Chile, se debe considerar que tres de estas especies están clasificadas bajo algún criterio de amenaza. Además, existe una de las más importantes agrupaciones de DCh y LMC del centro-sur de Chile, expuestas a importantes interacciones operacionales con la pesquería. Esto hace necesario establecer con prontitud medidas de protección del litoral para asegurar la conservación de estos mamíferos marinos en el centro-sur de Chile y con ello, en toda la costa chilena.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132181244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-09DOI: 10.22370/RBMO.2020.55.3.2589
A. Góngora-Gómez, M. García-Ulloa, Diego García-Ulloa, Manuel Manuel García-Ulloa, J. Salgado-Barragán, J. Arzola-González, J. A. Hernández-Sepúlveda
There are abundant reports of symbiosis wherein crustaceans live inside or on mollusks; however, there are few published records of gastropods hosting decapods. This study examines the biological association between fifteen snails (124.86 ± 19.01) from the species Pacific crown conch Melongena patula and the porcelain crab Euceramus transversilineatus. Morphometric relationships of both invertebrates, as well as some sexual characteristics of the crab were conducted. These invertebrates were sampled in the Navachiste Lagoon, in the south eastern Gulf of California, Sinaloa, Mexico. It was found 86.6% of the snails housed at least a female or a male porcelain crab (17.82 ± 3.27 mm total body length) or a pair of them (heterosexual and same sex) with a sexual proportion of 2M:1F. There were no correlations between any of the crab and snail based on their analyzed morphometric relationships. For the crab males, the measurements of both chelae presented relationships with total body length, carapace length, and abdomen width however, no significant differences were observed between the mean width and chelae length of males, females or between sexes. Of the six females collected, four were gravid. Preliminary observations indicated that the porcelain crab E. transversilineatus is a commensal endosymbiont that coexist in short-term association with M. patula. Their population distribution suggests that E. transversilineatus are polygamous with a promiscuous mating pattern.
{"title":"Euceramus transversilineatus (Decapoda: Porcellanidae) living in the mantle lobe of the snail Melongena patula (Gastropoda: Melongenidae) in the south eastern Gulf of California: Inference of a biological association","authors":"A. Góngora-Gómez, M. García-Ulloa, Diego García-Ulloa, Manuel Manuel García-Ulloa, J. Salgado-Barragán, J. Arzola-González, J. A. Hernández-Sepúlveda","doi":"10.22370/RBMO.2020.55.3.2589","DOIUrl":"https://doi.org/10.22370/RBMO.2020.55.3.2589","url":null,"abstract":"There are abundant reports of symbiosis wherein crustaceans live inside or on mollusks; however, there are few published records of gastropods hosting decapods. This study examines the biological association between fifteen snails (124.86 ± 19.01) from the species Pacific crown conch Melongena patula and the porcelain crab Euceramus transversilineatus. Morphometric relationships of both invertebrates, as well as some sexual characteristics of the crab were conducted. These invertebrates were sampled in the Navachiste Lagoon, in the south eastern Gulf of California, Sinaloa, Mexico. It was found 86.6% of the snails housed at least a female or a male porcelain crab (17.82 ± 3.27 mm total body length) or a pair of them (heterosexual and same sex) with a sexual proportion of 2M:1F. There were no correlations between any of the crab and snail based on their analyzed morphometric relationships. For the crab males, the measurements of both chelae presented relationships with total body length, carapace length, and abdomen width however, no significant differences were observed between the mean width and chelae length of males, females or between sexes. Of the six females collected, four were gravid. Preliminary observations indicated that the porcelain crab E. transversilineatus is a commensal endosymbiont that coexist in short-term association with M. patula. Their population distribution suggests that E. transversilineatus are polygamous with a promiscuous mating pattern.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128365020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-09DOI: 10.22370/RBMO.2020.55.3.2579
Doris Oliva, A. Celis, Alejandro Abarca, M. Pizarro, L. R. Duran
Semillas (spats) de Mulinia edulis, producidas en hatchery, se engordaron durante 40 días, en un sistema de cultivo suspendido (long-line) en el mar en Bahía Yal (Chiloé, Chile), con el objetivo de probar la factibilidad de pre-engorda. Se utilizaron dos tamaños de siembra 2,9 y 6,2 mm y dos densidades [1 (D1) y 2 (D2) semillas cm-2] en tratamientos con (TA) y sin arena (TSA) con semillas pequeñas. Se determinó el crecimiento y la supervivencia de semillas pequeñas en long-line instalados en la periferia y en el centro de la concesión de acuicultura. En el experimento de tamaño de siembra las semillas pequeñas crecieron en promedio 5,0 mm y las grandes 4,9 mm en TA y en el TSA 0,9 mm y 0,7 mm, respectivamente. La supervivencia de las semillas en TA (pequeñas= 51,3%; grandes= 62,3%) fue mayor que en TSA (pequeñas= 18,9%; grandes= 40,0%). En el experimento de densidad, las mayores longitudes se presentaron en TA, con un crecimiento promedio 5,0 mm en D1 y 4,5 mm en D2. La mayor supervivencia se obtuvo en TA (D1= 51,3%; D2= 49,4%) y la menor en TSA (D1= 18,9%; D2= 7,1%. El crecimiento de las semillas pequeñas fue mayor en los long-line ubicados en la periferia, no observándose diferencias en la supervivencia. Los resultados muestran que es factible realizar una pre-engorda a un tamaño de siembra de 2,9 mm con una densidad inicial de 2 semillas cm-2 en sistemas suspendidos con arena.
{"title":"Pre-engorda de semillas de cultivo de la almeja taquilla, Mulinia edulis, en un sistema suspendido en el mar","authors":"Doris Oliva, A. Celis, Alejandro Abarca, M. Pizarro, L. R. Duran","doi":"10.22370/RBMO.2020.55.3.2579","DOIUrl":"https://doi.org/10.22370/RBMO.2020.55.3.2579","url":null,"abstract":"Semillas (spats) de Mulinia edulis, producidas en hatchery, se engordaron durante 40 días, en un sistema de cultivo suspendido (long-line) en el mar en Bahía Yal (Chiloé, Chile), con el objetivo de probar la factibilidad de pre-engorda. Se utilizaron dos tamaños de siembra 2,9 y 6,2 mm y dos densidades [1 (D1) y 2 (D2) semillas cm-2] en tratamientos con (TA) y sin arena (TSA) con semillas pequeñas. Se determinó el crecimiento y la supervivencia de semillas pequeñas en long-line instalados en la periferia y en el centro de la concesión de acuicultura. En el experimento de tamaño de siembra las semillas pequeñas crecieron en promedio 5,0 mm y las grandes 4,9 mm en TA y en el TSA 0,9 mm y 0,7 mm, respectivamente. La supervivencia de las semillas en TA (pequeñas= 51,3%; grandes= 62,3%) fue mayor que en TSA (pequeñas= 18,9%; grandes= 40,0%). En el experimento de densidad, las mayores longitudes se presentaron en TA, con un crecimiento promedio 5,0 mm en D1 y 4,5 mm en D2. La mayor supervivencia se obtuvo en TA (D1= 51,3%; D2= 49,4%) y la menor en TSA (D1= 18,9%; D2= 7,1%. El crecimiento de las semillas pequeñas fue mayor en los long-line ubicados en la periferia, no observándose diferencias en la supervivencia. Los resultados muestran que es factible realizar una pre-engorda a un tamaño de siembra de 2,9 mm con una densidad inicial de 2 semillas cm-2 en sistemas suspendidos con arena.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129651090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-30DOI: 10.22370/rbmo.2020.55.2.2497
Jorge Tapia-Martínez, E. Cano-Europa, M. Casas-Valdez, Vanessa Blas-Valdivia, M. Franco-Colín
Macrocystis pyrifera is a giant brown seaweed with high nutritional content, used as a dietary supplement in some farm animals. It contains fucoidan which has a pharmacological effect on lipids and glucose metabolism. Some brown seaweeds can bioaccumulate toxic elements in their cell wall, representing a problem if toxicity tests that guarantee the safety of their consumption are not done. M. pyrifera, does not present toxicological studies that guarantee its safety. This work aimed to perform the acute and subchronic toxicological evaluation of M. pyrifera in rodents as well as to determine its possible therapeutic effect. Fronds of M. pyrifera were collected in Baja California Sur, Mexico, for drying and obtaining algae flour. The acute toxicity test LD50 was performed in C57BL / 6 male mice (25 ± 3 g) for 7 days, finding an LD50 greater than 10 g kg-1. Subchronic toxicity was determined for 121 days in adult male Sprague Dawley rats (98 ± 2 g), during which the experimental animals showed no signs of toxicity, or changes in the hematological, biochemical and histopathological parameters of the organs. The reactive oxygen species, lipid peroxidation or glutathione ratio were not different from the control group. A therapeutic effect on the regulation of body weight and a hypolipidemic effect (triacylglycerides: 82.27 ± 5.55 mg dl-1, cholesterol: 98.61 ± 6.48 mg dl-1) were found. It is concluded that, under the conditions in which this study was developed, the consumption of M. pyrifera as a functional ingredient is safe.
{"title":"Toxicological and therapeutic evaluation of the algae Macrocystis pyrifera (Phaeophyceae) in rodents","authors":"Jorge Tapia-Martínez, E. Cano-Europa, M. Casas-Valdez, Vanessa Blas-Valdivia, M. Franco-Colín","doi":"10.22370/rbmo.2020.55.2.2497","DOIUrl":"https://doi.org/10.22370/rbmo.2020.55.2.2497","url":null,"abstract":"Macrocystis pyrifera is a giant brown seaweed with high nutritional content, used as a dietary supplement in some farm animals. It contains fucoidan which has a pharmacological effect on lipids and glucose metabolism. Some brown seaweeds can bioaccumulate toxic elements in their cell wall, representing a problem if toxicity tests that guarantee the safety of their consumption are not done. M. pyrifera, does not present toxicological studies that guarantee its safety. This work aimed to perform the acute and subchronic toxicological evaluation of M. pyrifera in rodents as well as to determine its possible therapeutic effect. Fronds of M. pyrifera were collected in Baja California Sur, Mexico, for drying and obtaining algae flour. The acute toxicity test LD50 was performed in C57BL / 6 male mice (25 ± 3 g) for 7 days, finding an LD50 greater than 10 g kg-1. Subchronic toxicity was determined for 121 days in adult male Sprague Dawley rats (98 ± 2 g), during which the experimental animals showed no signs of toxicity, or changes in the hematological, biochemical and histopathological parameters of the organs. The reactive oxygen species, lipid peroxidation or glutathione ratio were not different from the control group. A therapeutic effect on the regulation of body weight and a hypolipidemic effect (triacylglycerides: 82.27 ± 5.55 mg dl-1, cholesterol: 98.61 ± 6.48 mg dl-1) were found. It is concluded that, under the conditions in which this study was developed, the consumption of M. pyrifera as a functional ingredient is safe.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123480196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-16DOI: 10.22370/rbmo.2020.55.2.2501
Alejandra A. Fabres
Rapa Nui only allows artisanal fishery activities, but these often go unaware. The market is centralized on Pacific chub, snoek and yellowfin tuna, all common pelagic fish. On September 2016, one un-identified specimen was caught off-shore as by-catch, and left on the main port at Hanga Piko. The objective of this study was to identify the specimen to a species level, using a morphological, meristic and molecular approach. All analyses suggest that the specimen belongs to a Poey’s scabbardfish, Evoxymetopon poeyi. Concluding that the rare Poey’s scabbardfish, has an oceanic distribution through seamounts as a mid-water migrator.
{"title":"Sighting of the rare Poey’s scabbardfish, Evoxymetopon poeyi, in the Polynesian triangle","authors":"Alejandra A. Fabres","doi":"10.22370/rbmo.2020.55.2.2501","DOIUrl":"https://doi.org/10.22370/rbmo.2020.55.2.2501","url":null,"abstract":"Rapa Nui only allows artisanal fishery activities, but these often go unaware. The market is centralized on Pacific chub, snoek and yellowfin tuna, all common pelagic fish. On September 2016, one un-identified specimen was caught off-shore as by-catch, and left on the main port at Hanga Piko. The objective of this study was to identify the specimen to a species level, using a morphological, meristic and molecular approach. All analyses suggest that the specimen belongs to a Poey’s scabbardfish, Evoxymetopon poeyi. Concluding that the rare Poey’s scabbardfish, has an oceanic distribution through seamounts as a mid-water migrator.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127847147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-16DOI: 10.22370/rbmo.2020.55.2.2500
Abraham Kobelkowsky, Omar Beltrán-Vinalay
El pez luna o jorobado Selene vomer es un teleósteo representante de la familia Carangidae con distribución en las costas del Atlántico Occidental, caracterizado por el extremo aplanamiento lateral de su cuerpo. Existen escasos registros de la anatomía de Selene Lacépède, 1802. El objetivo fue la determinación de la relación entre la forma comprimida del cuerpo de S. vomer y la organización de los órganos dentro la cavidad visceral. Mediante disección se determinaron los límites esqueléticos de la cavidad visceral y se analizó, describió e ilustró la anatomía de los órganos contenidos en la misma. La cavidad visceral es aplanada lateralmente, de aspecto lateral trapezoidal, vertical y extendida extra visceralmente mediante las cavidades viscerales secundarias. La vejiga gaseosa es amplia, unicameral, y desarrolla hacia atrás dos lóbulos posteriores. El mesonefros es comprimido y curvado y forma dos lóbulos renales anteriores. El tubo digestivo se dispone verticalmente y muestra un conjunto de ciegos duodenales ramificados. Las gónadas tienen una posición diagonal. Se reconoce una relación directa del aplanamiento lateral del cuerpo con la forma comprimida de la cavidad visceral y de sus órganos. La forma de la cavidad visceral está relacionada con el alargamiento vertical de las cinturas escapular y pélvica, las costillas pleurales y el primer pterigióforo anal. El órgano con mayor número de rasgos anatómicos especiales es la vejiga gaseosa, por sus lóbulos posteriores extraviscerales y por su anclaje a la columna vertebral mediante ligamentos.
{"title":"Morfología de la cavidad visceral del pez jorobado Selene vomer (Teleostei: Carangidae)","authors":"Abraham Kobelkowsky, Omar Beltrán-Vinalay","doi":"10.22370/rbmo.2020.55.2.2500","DOIUrl":"https://doi.org/10.22370/rbmo.2020.55.2.2500","url":null,"abstract":"El pez luna o jorobado Selene vomer es un teleósteo representante de la familia Carangidae con distribución en las costas del Atlántico Occidental, caracterizado por el extremo aplanamiento lateral de su cuerpo. Existen escasos registros de la anatomía de Selene Lacépède, 1802. El objetivo fue la determinación de la relación entre la forma comprimida del cuerpo de S. vomer y la organización de los órganos dentro la cavidad visceral. Mediante disección se determinaron los límites esqueléticos de la cavidad visceral y se analizó, describió e ilustró la anatomía de los órganos contenidos en la misma. La cavidad visceral es aplanada lateralmente, de aspecto lateral trapezoidal, vertical y extendida extra visceralmente mediante las cavidades viscerales secundarias. La vejiga gaseosa es amplia, unicameral, y desarrolla hacia atrás dos lóbulos posteriores. El mesonefros es comprimido y curvado y forma dos lóbulos renales anteriores. El tubo digestivo se dispone verticalmente y muestra un conjunto de ciegos duodenales ramificados. Las gónadas tienen una posición diagonal. Se reconoce una relación directa del aplanamiento lateral del cuerpo con la forma comprimida de la cavidad visceral y de sus órganos. La forma de la cavidad visceral está relacionada con el alargamiento vertical de las cinturas escapular y pélvica, las costillas pleurales y el primer pterigióforo anal. El órgano con mayor número de rasgos anatómicos especiales es la vejiga gaseosa, por sus lóbulos posteriores extraviscerales y por su anclaje a la columna vertebral mediante ligamentos.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128078000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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