Pub Date : 2023-08-31DOI: 10.3856/vol51-issue4-fulltext-3070
José Elías Rojas-Cruz, José Jair García-Dimas, Vicencio De la Cruz-Francisco, María A. Mendoza-Becerril
Access to digital technology and software allows the production of a significant amount of biodiversity data, including citizens' species records, combined with field monitoring and standardized surveys, which are valuable to biological sciences; these data can help to know the distribution of organisms like medusozoans. We compiled records of the presence of Porpita porpita from open-access databases, scientific articles, and field observations to know their current distribution on the Mexican Atlantic for the first time. The yearly records of P. porpita increased over time, adding up to 22 records, of which 18 were assigned to citizen science. Most records correspond to 2011-2022, from April to May, and the Veracruz and Quintana Roo states. The records of the species in warm months and states with long shores can be related to an increase in touristic activities and observations by citizens. On the Mexican Atlantic, it is suggested that the use of digital technological devices under citizen science practices for recording P. porpita and its compilation in open-access databases acts as the principal method for tracking the distribution of this species. This work evidenced the need for a solid research framework of knowledge for P. porpita in the Mexican Atlantic, and future research could combine citizen science records and fieldwork records and improve the relationship between biological and oceanographic data to understand their spatial-temporal distribution patterns.
{"title":"Blue button (Cnidaria: Hydrozoa) distribution and trends in the Mexican Atlantic, based on field surveys and open-access data","authors":"José Elías Rojas-Cruz, José Jair García-Dimas, Vicencio De la Cruz-Francisco, María A. Mendoza-Becerril","doi":"10.3856/vol51-issue4-fulltext-3070","DOIUrl":"https://doi.org/10.3856/vol51-issue4-fulltext-3070","url":null,"abstract":"Access to digital technology and software allows the production of a significant amount of biodiversity data, including citizens' species records, combined with field monitoring and standardized surveys, which are valuable to biological sciences; these data can help to know the distribution of organisms like medusozoans. We compiled records of the presence of Porpita porpita from open-access databases, scientific articles, and field observations to know their current distribution on the Mexican Atlantic for the first time. The yearly records of P. porpita increased over time, adding up to 22 records, of which 18 were assigned to citizen science. Most records correspond to 2011-2022, from April to May, and the Veracruz and Quintana Roo states. The records of the species in warm months and states with long shores can be related to an increase in touristic activities and observations by citizens. On the Mexican Atlantic, it is suggested that the use of digital technological devices under citizen science practices for recording P. porpita and its compilation in open-access databases acts as the principal method for tracking the distribution of this species. This work evidenced the need for a solid research framework of knowledge for P. porpita in the Mexican Atlantic, and future research could combine citizen science records and fieldwork records and improve the relationship between biological and oceanographic data to understand their spatial-temporal distribution patterns.","PeriodicalId":49917,"journal":{"name":"Latin American Journal of Aquatic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47757699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-31DOI: 10.3856/vol51-issue4-fulltext-2941
Fausto Pineda, Esteban Molina, A. Torregroza-Espinosa, C. Cardona-Almeida, A. Suárez
Fishing is one of the oldest activities developed by humans for both food subsistence and economic gain. Artisanal fishing has a great social impact; it helps satisfy basic nutritional needs and generates income for communities. Therefore, local ecological knowledge associated with such fishing practices is important because of its capacity to provide data on fishing research. Fishing in the study area is largely artisanal for subsistence, a consequence of the fact that there are no fishing associations or cooperatives which might empower local workers and help promote the sector. We based our study on a quantitative approach. Through this approach, we analyzed factors that influence future fishing decisions among artisanal fishers in a community in northern Colombia. We found that socioeconomic conditions and pollution were important considerations when respondents contemplated future fishing prospects. Respondents' perceptions of institutional support also influenced their attitudes about fishing. Most respondents planned to continue fishing. We encourage local authorities in such communities to address the challenges faced by artisanal fishers and develop strategies to improve the socioeconomic and environmental conditions in which such people work.
{"title":"Sustaining local ecological knowledge of artisanal fishers: a perspective from northern Colombia","authors":"Fausto Pineda, Esteban Molina, A. Torregroza-Espinosa, C. Cardona-Almeida, A. Suárez","doi":"10.3856/vol51-issue4-fulltext-2941","DOIUrl":"https://doi.org/10.3856/vol51-issue4-fulltext-2941","url":null,"abstract":"Fishing is one of the oldest activities developed by humans for both food subsistence and economic gain. Artisanal fishing has a great social impact; it helps satisfy basic nutritional needs and generates income for communities. Therefore, local ecological knowledge associated with such fishing practices is important because of its capacity to provide data on fishing research. Fishing in the study area is largely artisanal for subsistence, a consequence of the fact that there are no fishing associations or cooperatives which might empower local workers and help promote the sector. We based our study on a quantitative approach. Through this approach, we analyzed factors that influence future fishing decisions among artisanal fishers in a community in northern Colombia. We found that socioeconomic conditions and pollution were important considerations when respondents contemplated future fishing prospects. Respondents' perceptions of institutional support also influenced their attitudes about fishing. Most respondents planned to continue fishing. We encourage local authorities in such communities to address the challenges faced by artisanal fishers and develop strategies to improve the socioeconomic and environmental conditions in which such people work.","PeriodicalId":49917,"journal":{"name":"Latin American Journal of Aquatic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48449687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-31DOI: 10.3856/vol51-issue4-fulltext-3048
F. Hoyos-Chairez, J. Chávez‐Villalba
Hatchery spat of pen shells is difficult to obtain as production runs generally fail. We present a case of commercial pilot spat production of Atrina maura in the hatchery, describing each phase in detail and determining the growth of larvae and postlarvae using multi-model inference (MMI). Growth rates of larvae in D-veliger to umbo stage (D-larvae = 65 ± 5.1 μm height and 75 ± 5.1 μm length) increased from 4.33 μm d-1 up to 675.6 μm d-1 during postlarvae stage (spat = 10.9 ± 2.2 mm height and 28.1 ± 4.4 mm length). Survival presented a significant daily decrease from 22.5% (beginning) to a final absolute survival of 0.042%. Hence, 50,000 commercial spats were produced from 120 million D-larvae. MMI showed that the best-fitting model describing growth corresponds to a Gompertz model for shell length and an exponential model for shell height. Critical phases were transitioning from D-larvae to the umbo stage (>80% collapse of cultures) and high mortality during metamorphosis. Further studies are required to find solutions to these problems. The results of this study may contribute to improving the management of pen shell production in the hatchery, as the production protocol is different from those used for other bivalve species.
{"title":"Growth and survival analysis of early stages in the pen shell Atrina maura during pilot-commercial production","authors":"F. Hoyos-Chairez, J. Chávez‐Villalba","doi":"10.3856/vol51-issue4-fulltext-3048","DOIUrl":"https://doi.org/10.3856/vol51-issue4-fulltext-3048","url":null,"abstract":"Hatchery spat of pen shells is difficult to obtain as production runs generally fail. We present a case of commercial pilot spat production of Atrina maura in the hatchery, describing each phase in detail and determining the growth of larvae and postlarvae using multi-model inference (MMI). Growth rates of larvae in D-veliger to umbo stage (D-larvae = 65 ± 5.1 μm height and 75 ± 5.1 μm length) increased from 4.33 μm d-1 up to 675.6 μm d-1 during postlarvae stage (spat = 10.9 ± 2.2 mm height and 28.1 ± 4.4 mm length). Survival presented a significant daily decrease from 22.5% (beginning) to a final absolute survival of 0.042%. Hence, 50,000 commercial spats were produced from 120 million D-larvae. MMI showed that the best-fitting model describing growth corresponds to a Gompertz model for shell length and an exponential model for shell height. Critical phases were transitioning from D-larvae to the umbo stage (>80% collapse of cultures) and high mortality during metamorphosis. Further studies are required to find solutions to these problems. The results of this study may contribute to improving the management of pen shell production in the hatchery, as the production protocol is different from those used for other bivalve species.","PeriodicalId":49917,"journal":{"name":"Latin American Journal of Aquatic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41920205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-31DOI: 10.3856/vol51-issue4-fulltext-2934
Tania Suarez-Yana, Paulo Colchao-Claux, Jeffrey C. Mangel, Elizabeth Campbell, J. Alfaro‐Shigueto
Inia geoffrensis is an endangered species of the Amazon River basin, but there has been limited research regarding its health, particularly in describing normal cell morphology by traditional techniques. This study aimed to identify the peripheral blood cells of I. geoffrensis through microscopic evaluation. Blood smears were collected from wild adults and stained with Wright's stain. We differentiated leukocyte cells (neutrophils, eosinophils, lymphocytes, and monocytes) and platelets. Additionally, we observed signs of inflammatory reactions in cell morphology by incrementing cell size and active cytoplasm in neutrophils, eosinophils, lymphocytes, and platelets. These findings provide important considerations for hemogram interpretation in future research and individual clinical cases in Amazon River dolphins. Also, our study delivers baseline information for future characterization and understanding of hemogram and leukogram changes in response to disease and health assessment for dolphin species.
{"title":"Morphological characterization of blood cells in Amazon River dolphin Inia geoffrensis: a case study","authors":"Tania Suarez-Yana, Paulo Colchao-Claux, Jeffrey C. Mangel, Elizabeth Campbell, J. Alfaro‐Shigueto","doi":"10.3856/vol51-issue4-fulltext-2934","DOIUrl":"https://doi.org/10.3856/vol51-issue4-fulltext-2934","url":null,"abstract":"Inia geoffrensis is an endangered species of the Amazon River basin, but there has been limited research regarding its health, particularly in describing normal cell morphology by traditional techniques. This study aimed to identify the peripheral blood cells of I. geoffrensis through microscopic evaluation. Blood smears were collected from wild adults and stained with Wright's stain. We differentiated leukocyte cells (neutrophils, eosinophils, lymphocytes, and monocytes) and platelets. Additionally, we observed signs of inflammatory reactions in cell morphology by incrementing cell size and active cytoplasm in neutrophils, eosinophils, lymphocytes, and platelets. These findings provide important considerations for hemogram interpretation in future research and individual clinical cases in Amazon River dolphins. Also, our study delivers baseline information for future characterization and understanding of hemogram and leukogram changes in response to disease and health assessment for dolphin species.","PeriodicalId":49917,"journal":{"name":"Latin American Journal of Aquatic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45627665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-31DOI: 10.3856/vol51-issue4-fulltext-2990
L. E. Ruiz-González, Dayana Janeth Tafoya-Sánchez, A. Tintos-Gómez, O. B. Del Rio-Zaragoza, Manuel Alejandro Vargas Ceballos, F. Vega-Villasante
Dormitator latifrons is an amphidromous fish widely distributed in the Pacific slope from California to Peru. Although this species has a high potential for aquaculture, there is little information about the blood parameters of sex and growth stage. Eighty specimens of D. latifrons (40 males and 40 females in two growth stages) were used. They were placed in 1700 L tanks, one for each group, and fed with a feed for Tilapia diet with 35% protein and 8% fat. At the end of 30 days, blood samples were collected. Some blood parameters were determined (hematocrit, glucose, total protein, albumin, globulin, and A/G), and hematocrit percentage, glucose, albumins, and globulins presented significant differences between stages (P < 0.05). Total proteins showed differences only between males and females (P < 0.05). The hematocrit registered significant differences between stage and sex (P < 0.05). Differences between stages and sex may be related to a higher growth rate, differences in feed conversion, an increase in energy expenditure, and variations in hormonal levels. This study is the first to determine some blood parameters of D. latifrons under experimental aquaculture conditions concerning sex and growth stage.
{"title":"Some blood parameters of Pacific fat sleepers, Dormitator latifrons (Richardson, 1844): a comparative study between male and female in two growth stages","authors":"L. E. Ruiz-González, Dayana Janeth Tafoya-Sánchez, A. Tintos-Gómez, O. B. Del Rio-Zaragoza, Manuel Alejandro Vargas Ceballos, F. Vega-Villasante","doi":"10.3856/vol51-issue4-fulltext-2990","DOIUrl":"https://doi.org/10.3856/vol51-issue4-fulltext-2990","url":null,"abstract":"Dormitator latifrons is an amphidromous fish widely distributed in the Pacific slope from California to Peru. Although this species has a high potential for aquaculture, there is little information about the blood parameters of sex and growth stage. Eighty specimens of D. latifrons (40 males and 40 females in two growth stages) were used. They were placed in 1700 L tanks, one for each group, and fed with a feed for Tilapia diet with 35% protein and 8% fat. At the end of 30 days, blood samples were collected. Some blood parameters were determined (hematocrit, glucose, total protein, albumin, globulin, and A/G), and hematocrit percentage, glucose, albumins, and globulins presented significant differences between stages (P < 0.05). Total proteins showed differences only between males and females (P < 0.05). The hematocrit registered significant differences between stage and sex (P < 0.05). Differences between stages and sex may be related to a higher growth rate, differences in feed conversion, an increase in energy expenditure, and variations in hormonal levels. This study is the first to determine some blood parameters of D. latifrons under experimental aquaculture conditions concerning sex and growth stage.","PeriodicalId":49917,"journal":{"name":"Latin American Journal of Aquatic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43301102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-02DOI: 10.3856/vol51-issue3-fulltext-3014
Rosa María Fuentes-Martínez, Erik Coria-Monter, M. A. Monreal‐Gómez, Elizabeth Durán-Campos, D. Salas‐de‐León
Biomass is a valuable indicator of biological production in any ecosystem and represents a proxy of secondary production in the case of zooplankton. This short communication aims to report zooplankton biomass values in the waters of the Campeche Canyon, southern Gulf of Mexico, during the "Nortes" storm season of 2011 and to explore their relationship with the hydrography and the circulation pattern. The results showed the presence of cyclonic and anticyclonic eddies associated with high and low water density at the base of the pycnocline. The highest values of zooplankton biomass (>40 g 100 m-3) were observed in regions that presented higher water density values (~26.1 kg m-3). In comparison, the lowest zooplankton biomass values (<5 g 100 m-3) were associated with low water densities (<25.6 kg m-3). The results presented here contribute to elucidating the role that physical forcing plays on the zooplankton biomass of the region, particularly during a season in which the passage of extreme storms is widespread.
生物量是任何生态系统中生物生产的一个有价值的指标，也是浮游动物二次生产的代表。这份简短的通讯旨在报告2011年“Nortes”风暴季节墨西哥湾南部坎佩切峡谷水域的浮游动物生物量值，并探讨它们与水文和环流模式的关系。结果表明，在比重跃层底部存在与高和低水密度相关的气旋和反气旋涡旋。浮游动物生物量的最高值（>40 g 100 m-3）出现在水密度值较高（~26.1 kg m-3）的地区。相比之下，最低的浮游动物生物量值（<5 g 100 m-3）与低水密度（<25.6 kg m-3）有关。本文给出的结果有助于阐明物理作用力对该地区浮游动物生物量的影响，特别是在极端风暴普遍通过的季节。
{"title":"An assessment of the zooplankton biomass in Campeche Canyon (southern Gulf of Mexico) during the \"Nortes\" storm season of 2011","authors":"Rosa María Fuentes-Martínez, Erik Coria-Monter, M. A. Monreal‐Gómez, Elizabeth Durán-Campos, D. Salas‐de‐León","doi":"10.3856/vol51-issue3-fulltext-3014","DOIUrl":"https://doi.org/10.3856/vol51-issue3-fulltext-3014","url":null,"abstract":"Biomass is a valuable indicator of biological production in any ecosystem and represents a proxy of secondary production in the case of zooplankton. This short communication aims to report zooplankton biomass values in the waters of the Campeche Canyon, southern Gulf of Mexico, during the \"Nortes\" storm season of 2011 and to explore their relationship with the hydrography and the circulation pattern. The results showed the presence of cyclonic and anticyclonic eddies associated with high and low water density at the base of the pycnocline. The highest values of zooplankton biomass (>40 g 100 m-3) were observed in regions that presented higher water density values (~26.1 kg m-3). In comparison, the lowest zooplankton biomass values (<5 g 100 m-3) were associated with low water densities (<25.6 kg m-3). The results presented here contribute to elucidating the role that physical forcing plays on the zooplankton biomass of the region, particularly during a season in which the passage of extreme storms is widespread.","PeriodicalId":49917,"journal":{"name":"Latin American Journal of Aquatic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47873600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-02DOI: 10.3856/vol51-issue3-fulltext-2946
L. Alvariño, G. Saez, T. Acioly, D. Carvalho Viana, J. Iannacone
. Callao Bay is strategically important for the industrial and tourist sector, serving as a recreational space for a large part of the population of Chalaca. However, even so, it permanently receives discharges of effluents, chemical products
{"title":"Biochemical indicators of contamination in the coastal area of Callao, Peru","authors":"L. Alvariño, G. Saez, T. Acioly, D. Carvalho Viana, J. Iannacone","doi":"10.3856/vol51-issue3-fulltext-2946","DOIUrl":"https://doi.org/10.3856/vol51-issue3-fulltext-2946","url":null,"abstract":". Callao Bay is strategically important for the industrial and tourist sector, serving as a recreational space for a large part of the population of Chalaca. However, even so, it permanently receives discharges of effluents, chemical products","PeriodicalId":49917,"journal":{"name":"Latin American Journal of Aquatic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46806145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-02DOI: 10.3856/vol51-issue3-fulltext-3010
C. González-Gándara
Reef health can be assessed from the fish biomass (roving herbivorous and predatory commercial species). In this preliminary note, the biomass of fish indicators of a healthy reef of Blake Reef, Veracruz, is estimated and compared with that recorded in other systems in the southern Gulf of Mexico. The size and abundance of fish observed in Blake Reef determine a remarkable biomass that exceeds the estimates of other reefs. The health of this reef makes it an important reservoir of regional diversity.
{"title":"Unusual high fish biomass suggests healthy conditions in a Mexican reef on the southern Gulf of Mexico","authors":"C. González-Gándara","doi":"10.3856/vol51-issue3-fulltext-3010","DOIUrl":"https://doi.org/10.3856/vol51-issue3-fulltext-3010","url":null,"abstract":"Reef health can be assessed from the fish biomass (roving herbivorous and predatory commercial species). In this preliminary note, the biomass of fish indicators of a healthy reef of Blake Reef, Veracruz, is estimated and compared with that recorded in other systems in the southern Gulf of Mexico. The size and abundance of fish observed in Blake Reef determine a remarkable biomass that exceeds the estimates of other reefs. The health of this reef makes it an important reservoir of regional diversity.","PeriodicalId":49917,"journal":{"name":"Latin American Journal of Aquatic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47046842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-02DOI: 10.3856/vol51-issue3-fulltext-2997
Jesús Montoya-Mendoza, Elizabeth González-González, M. Castañeda-Chávez, F. Lango-Reynoso, Ángel Morán-Silva
In nine Caranx hippos specimens, Cd, Pb, Cr, and Cu concentration was determined in tissues (muscle and gonad) and parasites (nematodes and cestodes). The fish were caught from February to June 2019 in Las Barrancas, Alvarado Beach, Veracruz, Mexico. Heavy metals were quantified using atomic absorption spectrophotometer. The results of the average concentration of pollutants were, Cr = 0.18 ± 0.05 mg kg-1 dry weight (dw); Cu = 0.2 ± 0.1 mg kg-1 dw; Pb = 0.022 ± 0.01 mg kg-1 dw; Cd = <0.003 mg kg-1 dw. Among the tissues, Cu was the one with the highest concentration in nematodes vs. cestodes (2.2:1); vs. gonad (2.5:1); vs. muscle (2.7:1). Due to the concentration registered in Caranginema americanum nematodes could be identified as a bioindicator species for Cu pollutant. The values generally do not exceed the limits established in the Mexican National Standard (NOM-242-SSA1-2009) for Cd and Pb (0.5 mg kg-1). Records of heavy metals do not represent a health risk from consuming C. hippos.
{"title":"Heavy metals in crevalle jack, Caranx hippos, and their non-intestinal parasitic helminths from Playa las Barrancas, Alvarado, Veracruz, Mexico","authors":"Jesús Montoya-Mendoza, Elizabeth González-González, M. Castañeda-Chávez, F. Lango-Reynoso, Ángel Morán-Silva","doi":"10.3856/vol51-issue3-fulltext-2997","DOIUrl":"https://doi.org/10.3856/vol51-issue3-fulltext-2997","url":null,"abstract":"In nine Caranx hippos specimens, Cd, Pb, Cr, and Cu concentration was determined in tissues (muscle and gonad) and parasites (nematodes and cestodes). The fish were caught from February to June 2019 in Las Barrancas, Alvarado Beach, Veracruz, Mexico. Heavy metals were quantified using atomic absorption spectrophotometer. The results of the average concentration of pollutants were, Cr = 0.18 ± 0.05 mg kg-1 dry weight (dw); Cu = 0.2 ± 0.1 mg kg-1 dw; Pb = 0.022 ± 0.01 mg kg-1 dw; Cd = <0.003 mg kg-1 dw. Among the tissues, Cu was the one with the highest concentration in nematodes vs. cestodes (2.2:1); vs. gonad (2.5:1); vs. muscle (2.7:1). Due to the concentration registered in Caranginema americanum nematodes could be identified as a bioindicator species for Cu pollutant. The values generally do not exceed the limits established in the Mexican National Standard (NOM-242-SSA1-2009) for Cd and Pb (0.5 mg kg-1). Records of heavy metals do not represent a health risk from consuming C. hippos.","PeriodicalId":49917,"journal":{"name":"Latin American Journal of Aquatic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41697790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-02DOI: 10.3856/vol51-issue3-fulltext-2971
Irene Lagunes, Homero Lumbreras-Martínez, C. Espinoza, J. Padrón, J. López‐Portillo, Á. Trigos
The biological importance of rhizosphere sediment-associated fungi in mangroves is poorly understood, especially when they are affected by high salinity and anaerobiosis in disturbed areas. This study evaluated the fungal diversity in the rhizosphere sediments of three mangrove species associated with three conservation conditions of mangrove forests in preserved, semi-preserved, and deteriorated areas. In addition, fungal bioactivity was correlated to the fungal diversity found in mangrove species from each area. We isolated 50 fungal strains belonging to three phyla, seven classes, and 10 orders. The fungal diversity was higher in the preserved area (H' = 2.22) than in the semi-preserved (H' = 1.73) and deteriorated areas (H' = 1.68); the redundancy analysis showed a tendency of fungal accumulation towards the rhizosphere of Rhizophora mangle and Avicennia germinans in the preserved and semi-preserved areas. In addition, the redundancy analysis showed that 10 bioactive fungi genera tended to accumulate on the rhizosphere of R. mangle and A. germinans in the preserved and semi-preserved areas. The preserved area is related to the semi-preserved area, with a 28% Jaccard similarity coefficient. The diversity and bioactivity of the isolated fungi encourage the need to conserve and restore mangrove ecosystems considering their current and potential services, such as bioprospecting new pharmacological compounds.
{"title":"Diversity and bioactivity of sediment-associated fungi from a mangrove forest in Mexico with different conservation conditions","authors":"Irene Lagunes, Homero Lumbreras-Martínez, C. Espinoza, J. Padrón, J. López‐Portillo, Á. Trigos","doi":"10.3856/vol51-issue3-fulltext-2971","DOIUrl":"https://doi.org/10.3856/vol51-issue3-fulltext-2971","url":null,"abstract":"The biological importance of rhizosphere sediment-associated fungi in mangroves is poorly understood, especially when they are affected by high salinity and anaerobiosis in disturbed areas. This study evaluated the fungal diversity in the rhizosphere sediments of three mangrove species associated with three conservation conditions of mangrove forests in preserved, semi-preserved, and deteriorated areas. In addition, fungal bioactivity was correlated to the fungal diversity found in mangrove species from each area. We isolated 50 fungal strains belonging to three phyla, seven classes, and 10 orders. The fungal diversity was higher in the preserved area (H' = 2.22) than in the semi-preserved (H' = 1.73) and deteriorated areas (H' = 1.68); the redundancy analysis showed a tendency of fungal accumulation towards the rhizosphere of Rhizophora mangle and Avicennia germinans in the preserved and semi-preserved areas. In addition, the redundancy analysis showed that 10 bioactive fungi genera tended to accumulate on the rhizosphere of R. mangle and A. germinans in the preserved and semi-preserved areas. The preserved area is related to the semi-preserved area, with a 28% Jaccard similarity coefficient. The diversity and bioactivity of the isolated fungi encourage the need to conserve and restore mangrove ecosystems considering their current and potential services, such as bioprospecting new pharmacological compounds.","PeriodicalId":49917,"journal":{"name":"Latin American Journal of Aquatic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42355819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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