An individual of the Cortez angelfish, Pomacanthus zonipectus (Gill, 1862) was obtained at the temperate Bahía de San Quintín, Baja California, México (Lat. 30.428343, Long. 115.987014), on May 15, 2021. All counts, morphological descriptions, and colors of the specimen caught agree with the previous descriptions for the species P. zonipectus. The Cortez angelfish is a tropical fish species, and its presence at the temperate environment may possibly be associated with warming events, The Blob-El Niño 2013-2016, or the most recent moderate El Niño 2018-2019. This occurrence constitutes the first record for the Cortez angelfish in the San Quintín area, northern Pacific off Baja California, and after thousands of samplings with different fishing gears beginning in 1993. The Cortez angelfish was recently recorded in August 25, 2016 as a new occurrence in Laguna Ojo de Liebre, Baja California Sur, México, also in the same warming event of The Blob-El Niño 2013-2016; from Ojo de Liebre to Bahía de San Quintín represents a northward movement of 355 kilometers and a new record in its distribution.
Cortez天使鱼Pomacanthus zonipectus (Gill, 1862)于2021年5月15日在m xico (l30 .428343, Long. 115.987014)的温带Bahía de San Quintín捕获。所捕获标本的所有计数、形态描述和颜色与先前对棘棘人种的描述一致。科尔特斯天使鱼是一种热带鱼，它在温带环境中的存在可能与变暖事件有关，Blob-El Niño 2013-2016，或最近的温和El Niño 2018-2019。在1993年开始用不同的渔具进行了数千次采样之后，这一事件构成了Cortez神仙鱼在北太平洋San Quintín地区的第一个记录。Cortez天使鱼最近于2016年8月25日被记录为一种新出现的鱼，它出现在m西科州下加利福尼亚州南部的拉古纳·奥霍·德·利布雷，也出现在与The Blob-El Niño 2013-2016相同的变暖事件中;从Ojo de Liebre到Bahía de San Quintín向北移动了355公里，在其分布上创造了新的记录。
{"title":"Biological indicator of warming events: Presence of the Cortez angelfish Pomacanthus zonipectus at temperate conditions of Bahía de San Quintín, Baja California, México","authors":"J. A. Rosales-Casián","doi":"10.3153/ar22016","DOIUrl":"https://doi.org/10.3153/ar22016","url":null,"abstract":"An individual of the Cortez angelfish, Pomacanthus zonipectus (Gill, 1862) was obtained at the temperate Bahía de San Quintín, Baja California, México (Lat. 30.428343, Long. 115.987014), on May 15, 2021. All counts, morphological descriptions, and colors of the specimen caught agree with the previous descriptions for the species P. zonipectus. The Cortez angelfish is a tropical fish species, and its presence at the temperate environment may possibly be associated with warming events, The Blob-El Niño 2013-2016, or the most recent moderate El Niño 2018-2019. This occurrence constitutes the first record for the Cortez angelfish in the San Quintín area, northern Pacific off Baja California, and after thousands of samplings with different fishing gears beginning in 1993. The Cortez angelfish was recently recorded in August 25, 2016 as a new occurrence in Laguna Ojo de Liebre, Baja California Sur, México, also in the same warming event of The Blob-El Niño 2013-2016; from Ojo de Liebre to Bahía de San Quintín represents a northward movement of 355 kilometers and a new record in its distribution.","PeriodicalId":13619,"journal":{"name":"International Aquatic Research","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82877936","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}
Simon M. Shati, Mary A. Apiyo, Rita N. Nairuti, A. Shoko, Fridah Munyi, E. Ogello
This study investigated the effect of replacing soybean meal (SBM) with black soldier fly larvae meal (BSFLM) on the growth performance, feed utilization, carcass body composition, and amino acids profile of Nile tilapia (Oreochromis niloticus). Three isonitrogenous (30% crude protein) diets containing BSFLM in varying proportions of 0% (BSFLM0), 50% (BSFLM50), and 100% (BSFLM100), were formulated to replace SBM. A commercial diet (COMM0) sourced from the local market was used as a positive control. Male sex-reversed O. niloticus juveniles of a mean weight 20.88 ±0.16 g were stocked in 12 cages each at a density of 12.5 fish m-3. Fish were hand-fed at 5% (28 days), 3% (54 days), and 2.5% (84 days) of the body weight twice a day (1000 hrs and 1600 hrs). Significant differences (P < 0.05) were found in the final body weight, body weight gain (BWG), specific growth rate (SGR), feed conversion ratio (FCR), survival rate, and condition factor (K). The best growth performance and feed utilization was recorded in fish fed on BSFLM100. The different diets had significant effects on the body composition and amino acid profiles of the experimental fish (P<0.05). Fish fed on BSFLM100 exhibited highest values for phenylalanine, threonine, Isoleucine, lysine, proline, and glutamic acid amino acids. The partial enterprise budget analysis indicated that replacing SBM with BSFLM at 50% and 100% reduced the cost of production compared to the control diet (BSFLM0) and commercial diet (COMM0). The study demonstrated that BSFLM is a cost-effective alternative to SBM in the diets of Oreochromis niloticus hence can replace soybean meal up to 100% without negative effect on growth and carcass body composition.
{"title":"Black soldier fly (Hermetia illucens) larvae meal improves growth performance, feed utilization, amino acids profile, and economic benefits of Nile tilapia (Oreochromis niloticus, L.)","authors":"Simon M. Shati, Mary A. Apiyo, Rita N. Nairuti, A. Shoko, Fridah Munyi, E. Ogello","doi":"10.3153/ar22023","DOIUrl":"https://doi.org/10.3153/ar22023","url":null,"abstract":"This study investigated the effect of replacing soybean meal (SBM) with black soldier fly larvae meal (BSFLM) on the growth performance, feed utilization, carcass body composition, and amino acids profile of Nile tilapia (Oreochromis niloticus). Three isonitrogenous (30% crude protein) diets containing BSFLM in varying proportions of 0% (BSFLM0), 50% (BSFLM50), and 100% (BSFLM100), were formulated to replace SBM. A commercial diet (COMM0) sourced from the local market was used as a positive control. Male sex-reversed O. niloticus juveniles of a mean weight 20.88 ±0.16 g were stocked in 12 cages each at a density of 12.5 fish m-3. Fish were hand-fed at 5% (28 days), 3% (54 days), and 2.5% (84 days) of the body weight twice a day (1000 hrs and 1600 hrs). Significant differences (P < 0.05) were found in the final body weight, body weight gain (BWG), specific growth rate (SGR), feed conversion ratio (FCR), survival rate, and condition factor (K). The best growth performance and feed utilization was recorded in fish fed on BSFLM100. The different diets had significant effects on the body composition and amino acid profiles of the experimental fish (P<0.05). Fish fed on BSFLM100 exhibited highest values for phenylalanine, threonine, Isoleucine, lysine, proline, and glutamic acid amino acids. The partial enterprise budget analysis indicated that replacing SBM with BSFLM at 50% and 100% reduced the cost of production compared to the control diet (BSFLM0) and commercial diet (COMM0). The study demonstrated that BSFLM is a cost-effective alternative to SBM in the diets of Oreochromis niloticus hence can replace soybean meal up to 100% without negative effect on growth and carcass body composition.","PeriodicalId":13619,"journal":{"name":"International Aquatic Research","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81300583","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}
A. Parmaksız, Elif Korkmaz, Dilara Ulusal, N. Doğan
Natural fish species living in the Euphrates River System; It is subject to some pressures such as overfishing, competition with invasive species and habitat loss. As a result of these pressures, it leads to the decrease of endemic and native species. At the beginning of these species are the species belonging to the Barbus Cuvier & Cloquet, 1816 and Luciobarbus Heckel, 1843 genera, which have high economic importance. In this study, phylogenetic analysis of the species belonging to the genus Barbus Cuvier & Cloquet, 1816 and Luciobarbus Heckel, 1843, which live naturally in the Euphrates River, was carried out with mtDNA COI gene sequences. 17 fish samples belonging to five species from three localities belonging to the Euphrates river system (Turkey) were studied. Total DNA extraction was performed from muscle tissue using Commercial Kit. Then the mtDNA COI region was amplified by PCR and sequenced. Genetic distance values were calculated between 0.00201 and 0.15332, and it was determined that the closest species were L. xanthopterus and L. esocinus, and the most distant species were B. lacerta and A. grypus. In addition, phylogenetic analyzes of the target species were made and an phylogenetic tree was formed and the species were distinguished. In future studies, it is recommended to evaluate the data in this study, to determine the genetic characteristics of populations, and to carry out conservation studies at the population level.
{"title":"Phylogenetic analysis of Luciobarbus Heckel, 1843 and Barbus Cuvier & Cloquet, 1816 species in the Euphrates River (Turkey) based on mtDNA COI gene sequences","authors":"A. Parmaksız, Elif Korkmaz, Dilara Ulusal, N. Doğan","doi":"10.3153/ar22012","DOIUrl":"https://doi.org/10.3153/ar22012","url":null,"abstract":"Natural fish species living in the Euphrates River System; It is subject to some pressures such as overfishing, competition with invasive species and habitat loss. As a result of these pressures, it leads to the decrease of endemic and native species. At the beginning of these species are the species belonging to the Barbus Cuvier & Cloquet, 1816 and Luciobarbus Heckel, 1843 genera, which have high economic importance. In this study, phylogenetic analysis of the species belonging to the genus Barbus Cuvier & Cloquet, 1816 and Luciobarbus Heckel, 1843, which live naturally in the Euphrates River, was carried out with mtDNA COI gene sequences. 17 fish samples belonging to five species from three localities belonging to the Euphrates river system (Turkey) were studied. Total DNA extraction was performed from muscle tissue using Commercial Kit. Then the mtDNA COI region was amplified by PCR and sequenced. Genetic distance values were calculated between 0.00201 and 0.15332, and it was determined that the closest species were L. xanthopterus and L. esocinus, and the most distant species were B. lacerta and A. grypus. In addition, phylogenetic analyzes of the target species were made and an phylogenetic tree was formed and the species were distinguished. In future studies, it is recommended to evaluate the data in this study, to determine the genetic characteristics of populations, and to carry out conservation studies at the population level.","PeriodicalId":13619,"journal":{"name":"International Aquatic Research","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87598160","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}
Our country is surrounded by seas on three sides; it is in an attractive position in terms of tourism due to its suitable climate and many history and cultures. Especially the stagnant structure of the Aegean and the Mediterranean allows sea tourism in almost four seasons; it is one of the routes preferred especially by yacht ships. In this respect, a maritime traffic arises due to touring, sports and recreational ships and yachts, and these ships occasionally cause accidents. In the study, marine accidents in the Turkish Search and Rescue Area involving touring, sports and recreational vessels and yachts are statistically analyzed. In this context, frequency distributions are carried out first and the hypotheses are examined by Chi-Square independence analysis.
{"title":"Analysis of accidents involved in touring/ sport/ recreational vessels and yachts in the Turkish search and rescue area","authors":"Sibel Bayar, Ercan Akan","doi":"10.3153/ar22004","DOIUrl":"https://doi.org/10.3153/ar22004","url":null,"abstract":"Our country is surrounded by seas on three sides; it is in an attractive position in terms of tourism due to its suitable climate and many history and cultures. Especially the stagnant structure of the Aegean and the Mediterranean allows sea tourism in almost four seasons; it is one of the routes preferred especially by yacht ships. In this respect, a maritime traffic arises due to touring, sports and recreational ships and yachts, and these ships occasionally cause accidents. In the study, marine accidents in the Turkish Search and Rescue Area involving touring, sports and recreational vessels and yachts are statistically analyzed. In this context, frequency distributions are carried out first and the hypotheses are examined by Chi-Square independence analysis.","PeriodicalId":13619,"journal":{"name":"International Aquatic Research","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80648734","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}
In this study, maritime accidents that occurred in the Strait of Istanbul over a 10-year period were evaluated in terms of ship-based risk factors. The frequency analysis was performed using the R - Studio program language. In this context, the accident data obtained from the Ministry of Transport and Infrastructure Main Search and Rescue Coordination Center were matched with the ship information accessed from Türk Loydu database. Thus, ship origin risk factors to be used within the scope of the study were determined and 10 different criteria were included in the analysis. These are ship length, ship breadth, ship draught, ship age, ship DWT, turning point, turning radius, L/B ratio, B/T ratio and number of propellers. The process of creating a data set was completed by spatially filtering the data and classifying of the ship-based causes accidents. The variables were examined with frequency analysis in the perspective of the Law of Large Numbers. With the results obtained, optimum characteristics based on ship origin risk factors have been revealed for each ship type that will pass through the Strait.
{"title":"Investigation of maritime accidents in the strait of Istanbul in the perspective of navigational safety: İSTANBULMAX ship type recommendation","authors":"Gizem Kodak, G. Kara, Murat Yıldız, Aydın Şalcı","doi":"10.3153/ar22007","DOIUrl":"https://doi.org/10.3153/ar22007","url":null,"abstract":"In this study, maritime accidents that occurred in the Strait of Istanbul over a 10-year period were evaluated in terms of ship-based risk factors. The frequency analysis was performed using the R - Studio program language. In this context, the accident data obtained from the Ministry of Transport and Infrastructure Main Search and Rescue Coordination Center were matched with the ship information accessed from Türk Loydu database. Thus, ship origin risk factors to be used within the scope of the study were determined and 10 different criteria were included in the analysis. These are ship length, ship breadth, ship draught, ship age, ship DWT, turning point, turning radius, L/B ratio, B/T ratio and number of propellers. The process of creating a data set was completed by spatially filtering the data and classifying of the ship-based causes accidents. The variables were examined with frequency analysis in the perspective of the Law of Large Numbers. With the results obtained, optimum characteristics based on ship origin risk factors have been revealed for each ship type that will pass through the Strait.","PeriodicalId":13619,"journal":{"name":"International Aquatic Research","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85914920","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 : 2021-09-01DOI: 10.22034/IAR.2021.1925333.1143
M. Kurosaki, Mayu Kunimoto, S. Itoi, N. Akiyama, H. Sugita
This study was performed to assess, by molecular methods, the gut microbial community associated with early life stages of the reared red seabream (Pagrus major). This work sought to better understand the gut microbiota during seed production, which may help control disease in the near future. At the larval fish stage, Alphaproteobacteria, Flavobacteria, and Gammaproteobacteria (excluding Vibrionaceae) were predominant in fish guts. These bacteria also predominated in rotifers, the primary component of the larval fish diet. At the juvenile stage, Gammaproteobacteria, Alphaproteobacteria, and Flavobacteria (except for Flavobacteria in one of two juvenile libraries) were predominantly detected in fish guts. Again, these bacteria also predominated in Artemia nauplii, a main component of the juvenile fish diet. These results suggested that the gut microbiota of larval and juvenile red seabream is influenced primarily by the microbiota of their diets. On the other hand, members of the family Vibrionaceae were not detected in larval fish guts, the rearing seawater, or rotifers, whereas bacteria of this family represented 28.6–64.6% of the reads in two libraries of juvenile fish guts. These observations suggested that hygiene management and administration of probiotics at the early life stage of red seabream are effective in suppressing the onset of opportunistic infections.
{"title":"Predominant gut microbiota in the early life stages of red seabream (Pagrus major) raised in indoor tanks","authors":"M. Kurosaki, Mayu Kunimoto, S. Itoi, N. Akiyama, H. Sugita","doi":"10.22034/IAR.2021.1925333.1143","DOIUrl":"https://doi.org/10.22034/IAR.2021.1925333.1143","url":null,"abstract":"This study was performed to assess, by molecular methods, the gut microbial community associated with early life stages of the reared red seabream (Pagrus major). This work sought to better understand the gut microbiota during seed production, which may help control disease in the near future. At the larval fish stage, Alphaproteobacteria, Flavobacteria, and Gammaproteobacteria (excluding Vibrionaceae) were predominant in fish guts. These bacteria also predominated in rotifers, the primary component of the larval fish diet. At the juvenile stage, Gammaproteobacteria, Alphaproteobacteria, and Flavobacteria (except for Flavobacteria in one of two juvenile libraries) were predominantly detected in fish guts. Again, these bacteria also predominated in Artemia nauplii, a main component of the juvenile fish diet. These results suggested that the gut microbiota of larval and juvenile red seabream is influenced primarily by the microbiota of their diets. On the other hand, members of the family Vibrionaceae were not detected in larval fish guts, the rearing seawater, or rotifers, whereas bacteria of this family represented 28.6–64.6% of the reads in two libraries of juvenile fish guts. These observations suggested that hygiene management and administration of probiotics at the early life stage of red seabream are effective in suppressing the onset of opportunistic infections.","PeriodicalId":13619,"journal":{"name":"International Aquatic Research","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68000940","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 : 2021-09-01DOI: 10.22034/IAR.2021.1926075.1146
N. Kamaruding, Mhd Ikhwanuddin Abdullah
Energy metabolism is a critical component in assessing the fundamental aspect of organism fitness in prawn aquaculture farming. This is particularly important to maintain sustainable energy use to cope with stress and tolerance without affecting growth and reproduction functions. This study aims to determine and compare energy utilisation with a special focus on reproductive performance and digestive capacity concerning the handling-stress and moulting cycle of female Giant Freshwater Prawn, Macrobrachium rosenbergii. There were two experimental groups, which are (i) grow-out pond-reared (G1): prawns were sampled randomly and concurrently for one day at an outdoor condition, and (ii) short-term maintenance (G2): prawns were transported to an indoor hatchery, acclimated for two weeks, and sampled by staggered-method for two consecutive months. For the respective experimental conditions, haemolymph from five females was sampled at eight different moulting stages, whereby each stage was classified as reproductive and non-reproductive moulting cycles. Cultivated females at the grow-out pond had higher levels of haemolymph glucose (p < 0.05) at Sub-stages D1 (0.51 ± 0.12 mg/mL), D3 (0.50 ± 0.05 mg/mL), and A (0.71 ± 0.09 mg/mL) during the reproductive moulting cycle compared to the short-term maintenance at similar moulting stages. Other findings showed that cultivated prawns at the grow-out pond had significantly (p < 0.05) higher glucose levels at Sub-stages D3 (0.57 ± 0.09 mg/mL) and B (0.37 ± 0.03 mg/mL) during the non-reproductive moulting cycle compared to the short-term maintenance indicating that energy was utilised to cope with the handling stress. We suggest that short-term maintenance may reduce the stressors factor and is applicable for hatchery operations to maintain the health of the prawn.
{"title":"Effects of handling stress and moulting cycle on reproductive performance and digestive capacity of female giant freshwater prawn, Macrobrachium rosenbergii","authors":"N. Kamaruding, Mhd Ikhwanuddin Abdullah","doi":"10.22034/IAR.2021.1926075.1146","DOIUrl":"https://doi.org/10.22034/IAR.2021.1926075.1146","url":null,"abstract":"Energy metabolism is a critical component in assessing the fundamental aspect of organism fitness in prawn aquaculture farming. This is particularly important to maintain sustainable energy use to cope with stress and tolerance without affecting growth and reproduction functions. This study aims to determine and compare energy utilisation with a special focus on reproductive performance and digestive capacity concerning the handling-stress and moulting cycle of female Giant Freshwater Prawn, Macrobrachium rosenbergii. There were two experimental groups, which are (i) grow-out pond-reared (G1): prawns were sampled randomly and concurrently for one day at an outdoor condition, and (ii) short-term maintenance (G2): prawns were transported to an indoor hatchery, acclimated for two weeks, and sampled by staggered-method for two consecutive months. For the respective experimental conditions, haemolymph from five females was sampled at eight different moulting stages, whereby each stage was classified as reproductive and non-reproductive moulting cycles. Cultivated females at the grow-out pond had higher levels of haemolymph glucose (p < 0.05) at Sub-stages D1 (0.51 ± 0.12 mg/mL), D3 (0.50 ± 0.05 mg/mL), and A (0.71 ± 0.09 mg/mL) during the reproductive moulting cycle compared to the short-term maintenance at similar moulting stages. Other findings showed that cultivated prawns at the grow-out pond had significantly (p < 0.05) higher glucose levels at Sub-stages D3 (0.57 ± 0.09 mg/mL) and B (0.37 ± 0.03 mg/mL) during the non-reproductive moulting cycle compared to the short-term maintenance indicating that energy was utilised to cope with the handling stress. We suggest that short-term maintenance may reduce the stressors factor and is applicable for hatchery operations to maintain the health of the prawn.","PeriodicalId":13619,"journal":{"name":"International Aquatic Research","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47489987","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 : 2021-09-01DOI: 10.22034/IAR.2021.1935831.1172
Í. G. S. D. Santos, Glauber Pereira de Carvalho Santos, Carlos Augusto Fernandes de Oliveira, C. Campos, L. O. Brito, A. Gálvez
Aquaculture wastewater can influence various communities’ structures in both marine and freshwater environments. This study describes the zooplankton community structure and environmental variables in both Passos River estuary (Northeast Atlantic, Brazil) and commercial shrimp farming ponds associated with this estuary. Samples for water quality analysis and quantification and identification of zooplankton were taken during a shrimp culture cycle (July to September 2014) from eight sites (two across the main channel, downstream and upstream, and six shrimp farming ponds). The main water quality parameters showed difference between the shrimp farming ponds and the Passos River estuary – higher levels of total phosphorus and chlorophyll-a were observed in the shrimp ponds. The zooplankton structure at different environments was dominated by the copepods (53.3 to 83.7%) and rotifers (9.2 to 35.5%) but no significant difference was observed among the individual densities. Meanwhile, nutrients availability was a key for high plankton densities in shrimp ponds. These findings have suggested that wastewater from shrimp farming did not influence the zooplankton community on a Neotropical estuary on a short-time scale.
{"title":"Can shrimp farming wastewater negatively affect water quality and zooplankton community structure of a Neotropical estuary? A case study during a productive cycle of Litopenaeus vannamei","authors":"Í. G. S. D. Santos, Glauber Pereira de Carvalho Santos, Carlos Augusto Fernandes de Oliveira, C. Campos, L. O. Brito, A. Gálvez","doi":"10.22034/IAR.2021.1935831.1172","DOIUrl":"https://doi.org/10.22034/IAR.2021.1935831.1172","url":null,"abstract":"Aquaculture wastewater can influence various communities’ structures in both marine and freshwater environments. This study describes the zooplankton community structure and environmental variables in both Passos River estuary (Northeast Atlantic, Brazil) and commercial shrimp farming ponds associated with this estuary. Samples for water quality analysis and quantification and identification of zooplankton were taken during a shrimp culture cycle (July to September 2014) from eight sites (two across the main channel, downstream and upstream, and six shrimp farming ponds). The main water quality parameters showed difference between the shrimp farming ponds and the Passos River estuary – higher levels of total phosphorus and chlorophyll-a were observed in the shrimp ponds. The zooplankton structure at different environments was dominated by the copepods (53.3 to 83.7%) and rotifers (9.2 to 35.5%) but no significant difference was observed among the individual densities. Meanwhile, nutrients availability was a key for high plankton densities in shrimp ponds. These findings have suggested that wastewater from shrimp farming did not influence the zooplankton community on a Neotropical estuary on a short-time scale.","PeriodicalId":13619,"journal":{"name":"International Aquatic Research","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47545959","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 : 2021-09-01DOI: 10.22034/IAR.2021.1927403.1152
A. Tarallo, C. Bailey, C. Agnisola, G. D’Onofrio
The oxygen consumption rate in a wild Mediterranean non-migratory population of a teleostean fish, the three-spined stickleback (Gasterosteus aculeatus), was measured to investigate if the infection by the cestode worm Schistocephalus solidus plerocercoids increases the oxygen consumption (Vo2) of the host fish. Previously, an increment in Vo2 has been reported but never found to be statistically significant. A new approach was carried out in the present study, using a small, but statistically representative, sample of uninfected and infected fish. We used the data on the parasite oxygen consumption available in the current literature to estimate the possible contribution of plerocercoids to the oxygen consumption of our experimental animals. The maximal plerocercoid putative contribution to the measured Vo2 of the infected host (i.e., host plus parasite) was assessed to be around 2.8%. Interestingly, a key role in the respiration rate of infected sticklebacks turned out to be played by the infection burden. In other words, the host specific Vo2 (sVo2) increment was significantly correlated with the number of plerocercoids harboured by the host. The observation implies that a reliable comparison of the physiological parameters between infected and uninfected stickleback populations can be only carried out if the number of parasites among the single individuals is homogeneous. Unfortunately, the random occurrence of the parasites makes this effort unpractical.
{"title":"A theoretical evaluation of the respiration rate partition in the Gasterosteus aculeatus-Schistocephalus solidus host-parasite system","authors":"A. Tarallo, C. Bailey, C. Agnisola, G. D’Onofrio","doi":"10.22034/IAR.2021.1927403.1152","DOIUrl":"https://doi.org/10.22034/IAR.2021.1927403.1152","url":null,"abstract":"The oxygen consumption rate in a wild Mediterranean non-migratory population of a teleostean fish, the three-spined stickleback (Gasterosteus aculeatus), was measured to investigate if the infection by the cestode worm Schistocephalus solidus plerocercoids increases the oxygen consumption (Vo2) of the host fish. Previously, an increment in Vo2 has been reported but never found to be statistically significant. A new approach was carried out in the present study, using a small, but statistically representative, sample of uninfected and infected fish. We used the data on the parasite oxygen consumption available in the current literature to estimate the possible contribution of plerocercoids to the oxygen consumption of our experimental animals. The maximal plerocercoid putative contribution to the measured Vo2 of the infected host (i.e., host plus parasite) was assessed to be around 2.8%. Interestingly, a key role in the respiration rate of infected sticklebacks turned out to be played by the infection burden. In other words, the host specific Vo2 (sVo2) increment was significantly correlated with the number of plerocercoids harboured by the host. The observation implies that a reliable comparison of the physiological parameters between infected and uninfected stickleback populations can be only carried out if the number of parasites among the single individuals is homogeneous. Unfortunately, the random occurrence of the parasites makes this effort unpractical.","PeriodicalId":13619,"journal":{"name":"International Aquatic Research","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49289262","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 : 2021-08-16DOI: 10.22034/IAR.2021.1924974.1142
Md. Sazedul Hoque, Md. Abu Sayed Ripon, Md. Belal Hossain, M. A. Rahman, M. Hasan, Biplob Dey Mithun, Avirup Saha, S. Chakma, Mst. Niloy Jaman, A. Rahman, M. Karim
Black Tiger Shrimp (Penaeus monodon) is one of the leading export commodities in Bangladesh. The industry, however, is frequently beset with quality deterioration and microbial diseases owing to various reasons. Here, we analyzed the sensory and nutritional qualities of shrimp, the total bacterial count, and molecular identification of pathogenic bacteria in samples collected from different supply chain actors (SCA), including the gher (farms), depots, wholesalers, retailers, and the processing industry in Khulna, Bangladesh. While the Sensory Quality Indices (SQI) of shrimps collected from farms, depots, and processing plants were found ‘excellent and highly acceptable’, the rating for wholesale and retail markets were ‘good and acceptable’. Nutritionally, higher protein (21.59%), lipid (1.47%), and ash (1.97%) contents were found in shrimps collected from farms than that of other SCAs. Heterotrophic bacterial count (cfu/g) differed in various SCAs: farms 3.75±0.31 (×106), depots 3.95±0.92 (×106), wholesale markets 5.03±0.35 (×106), retail markets 4.82±0.40 (×106), and the processing industry 3.78±0.25 (×106). The presence of Ralstonia spp and Pseudomonas spp, confirmed by 16S rDNA sequencing were found in different SCAs. Overall, the quality of shrimp appeared better in farms than that of other SCAs, indicating that a lack of proper hygiene, sanitation, and post-harvest handling practices could be the likely impediments for quality deterioration.
{"title":"Quality assessment and molecular identification of bacteria across the black tiger shrimp (Penaeus monodon) supply chains in Southern Bangladesh","authors":"Md. Sazedul Hoque, Md. Abu Sayed Ripon, Md. Belal Hossain, M. A. Rahman, M. Hasan, Biplob Dey Mithun, Avirup Saha, S. Chakma, Mst. Niloy Jaman, A. Rahman, M. Karim","doi":"10.22034/IAR.2021.1924974.1142","DOIUrl":"https://doi.org/10.22034/IAR.2021.1924974.1142","url":null,"abstract":"Black Tiger Shrimp (Penaeus monodon) is one of the leading export commodities in Bangladesh. The industry, however, is frequently beset with quality deterioration and microbial diseases owing to various reasons. Here, we analyzed the sensory and nutritional qualities of shrimp, the total bacterial count, and molecular identification of pathogenic bacteria in samples collected from different supply chain actors (SCA), including the gher (farms), depots, wholesalers, retailers, and the processing industry in Khulna, Bangladesh. While the Sensory Quality Indices (SQI) of shrimps collected from farms, depots, and processing plants were found ‘excellent and highly acceptable’, the rating for wholesale and retail markets were ‘good and acceptable’. Nutritionally, higher protein (21.59%), lipid (1.47%), and ash (1.97%) contents were found in shrimps collected from farms than that of other SCAs. Heterotrophic bacterial count (cfu/g) differed in various SCAs: farms 3.75±0.31 (×106), depots 3.95±0.92 (×106), wholesale markets 5.03±0.35 (×106), retail markets 4.82±0.40 (×106), and the processing industry 3.78±0.25 (×106). The presence of Ralstonia spp and Pseudomonas spp, confirmed by 16S rDNA sequencing were found in different SCAs. Overall, the quality of shrimp appeared better in farms than that of other SCAs, indicating that a lack of proper hygiene, sanitation, and post-harvest handling practices could be the likely impediments for quality deterioration.","PeriodicalId":13619,"journal":{"name":"International Aquatic Research","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46996766","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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