Alkaline phosphatase (ALP) is a glycoprotein with a metallophosphatase structure that catalyzes the hydrolysis of monophosphate esters of biomolecule esters at alkaline pH. ALP activity is a useful bioindicator to assess the physiological health of cellular membranes, cell growth, apoptosis and cell migration, cellular metabolic status, hepatocyte function, and detoxification activity in hepatocytes. ALP activity is detected in a colorimetric method using the para-nitrophenyl phosphate substrate (p-NPP) at a wavelength of 405 nm in biological samples. Cell hemolysis, especially erythrocytes; increased levels of sex hormones and corticosteroids, biological infections, and poor nutrition can adversely affect ALP activity.
{"title":"Alkaline phosphatase activity as a biochemical biomarker in aqua-toxicological studies","authors":"M. Banaee","doi":"10.22034/IJAB.V8I2.880","DOIUrl":"https://doi.org/10.22034/IJAB.V8I2.880","url":null,"abstract":"Alkaline phosphatase (ALP) is a glycoprotein with a metallophosphatase structure that catalyzes the hydrolysis of monophosphate esters of biomolecule esters at alkaline pH. ALP activity is a useful bioindicator to assess the physiological health of cellular membranes, cell growth, apoptosis and cell migration, cellular metabolic status, hepatocyte function, and detoxification activity in hepatocytes. ALP activity is detected in a colorimetric method using the para-nitrophenyl phosphate substrate (p-NPP) at a wavelength of 405 nm in biological samples. Cell hemolysis, especially erythrocytes; increased levels of sex hormones and corticosteroids, biological infections, and poor nutrition can adversely affect ALP activity.","PeriodicalId":36975,"journal":{"name":"International Journal of Aquatic Biology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88817500","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}
Investigation of mysid habitats in estuarine waters were conducted at 59 sites throughout Auckland region from May 2006 to January 2009. This paper provides the taxonomic descriptions of the three species, collected during this survey. Among the 59 sites mysids were collected only at 26 sites: Tenagomysis chiltoni collected from 15 sites, T . novaezealandiae from 21 sites and Gastrosaccus australis from four sites. Ontogenetic variation observed in the size of the antennal scale, and counts of lateral spines and cleft spines of telson and uropod for both T . chiltoni and T . novaezealandiae. Such apparent characteristics should not be used alone to differentiate species. It is important to use a combination of characteristics such as shape of the rostrum, anterolateral margin of the carapace, number of articulations of carpo-propodus of thoracic limbs and shape and size of the antennal scale. Several aspects of the description of T . chiltoni provided by Tattersall (1923) and Hodge (1964), do not agree with the present specimens, this is due to size variations.
{"title":"A redescription of Tenagomysis species and Gastrosaccus australis from estuarine environments (Crustacea: Mysida) in Auckland region, New Zealand","authors":"N. Punchihewa","doi":"10.22034/IJAB.V8I2.834","DOIUrl":"https://doi.org/10.22034/IJAB.V8I2.834","url":null,"abstract":"Investigation of mysid habitats in estuarine waters were conducted at 59 sites throughout Auckland region from May 2006 to January 2009. This paper provides the taxonomic descriptions of the three species, collected during this survey. Among the 59 sites mysids were collected only at 26 sites: Tenagomysis chiltoni collected from 15 sites, T . novaezealandiae from 21 sites and Gastrosaccus australis from four sites. Ontogenetic variation observed in the size of the antennal scale, and counts of lateral spines and cleft spines of telson and uropod for both T . chiltoni and T . novaezealandiae. Such apparent characteristics should not be used alone to differentiate species. It is important to use a combination of characteristics such as shape of the rostrum, anterolateral margin of the carapace, number of articulations of carpo-propodus of thoracic limbs and shape and size of the antennal scale. Several aspects of the description of T . chiltoni provided by Tattersall (1923) and Hodge (1964), do not agree with the present specimens, this is due to size variations.","PeriodicalId":36975,"journal":{"name":"International Journal of Aquatic Biology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85117146","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}
Leyli Purrafee Dizaj/ Pourrafei, H. Esmaeili, K. Abbasi, T. Valinassab, A. Salarpouri
This study investigates length–weight relationships of six clupeid species ( Alosa braschnikowi , Alosa caspia , Dussumieria acuta , Nematalosa nasus , Sardinella albella and Tenualosa ilisha ) captured from three main water bodies of Iran (Persian Gulf, Oman Sea and Caspian Sea), to evaluate if the LWR parameters fit for these fishes having specific morphological characteristics. Based on the obtained results, i) the b value was influenced by recorded length (TL, SL, FL) and body shape, ii) it was within the expected range of 2.27–3.48, iii) length–weight relationships were highly correlated and significant (r 2 >0.82-0.98, P <0.001), and hence length-weight equations fit well with six clupeid species in the Iranian water bodies. The results presented here, would be useful for fishery biologists and fisheries stake-holders in the study area.
{"title":"Does length-weight equation fit clupeid fishes? An evaluation of LWRs for six clupeids from Iran (Teleostei: Clupeiformes)","authors":"Leyli Purrafee Dizaj/ Pourrafei, H. Esmaeili, K. Abbasi, T. Valinassab, A. Salarpouri","doi":"10.22034/IJAB.V8I2.847","DOIUrl":"https://doi.org/10.22034/IJAB.V8I2.847","url":null,"abstract":"This study investigates length–weight relationships of six clupeid species ( Alosa braschnikowi , Alosa caspia , Dussumieria acuta , Nematalosa nasus , Sardinella albella and Tenualosa ilisha ) captured from three main water bodies of Iran (Persian Gulf, Oman Sea and Caspian Sea), to evaluate if the LWR parameters fit for these fishes having specific morphological characteristics. Based on the obtained results, i) the b value was influenced by recorded length (TL, SL, FL) and body shape, ii) it was within the expected range of 2.27–3.48, iii) length–weight relationships were highly correlated and significant (r 2 >0.82-0.98, P <0.001), and hence length-weight equations fit well with six clupeid species in the Iranian water bodies. The results presented here, would be useful for fishery biologists and fisheries stake-holders in the study area.","PeriodicalId":36975,"journal":{"name":"International Journal of Aquatic Biology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76160811","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 the present study, distribution, and bioaccumulation of Cu, Zn, Cd, and Pb were analysed in water, sediment and freshwater fish tissues of Catla catla and Mystus seenghala which were seasonally collected from River Mahananda in Seemanchal zone. The results showed that except Pb, level of Cu, Zn and Cd in water were below than allowance limit of WHO (2008), while level of Cu, Zn and Cd in sediment was higher than a toxicity reference value (TRV) recommended by USEPA (1999), except Pb. Heavy metal concentration in water and sediment were recorded in the order: Cu>Pb>Zn>Cd and Zn>Cu>Pb>Cd, respectively. The seasonal variation of this metal in water was in the sequence: rainy>winter>summer, and in sediment summer>winter>rainy. Bioaccumulation of studied metal by different tissues of M. seenghala was maximum than C. catla , and found that following order of magnitude: liver>gill>muscle. The order of studied metal concentration in liver Zn>Pb>Cu>Cd, in Gills Zn>Pb>Cu>Cd, in muscle Zn>Pb>Cu. Pb was only metal whose concentration was higher than FAO, FAO/WHO and WHO standards in all examined tissues of both species . Bioaccumulation of Pb in different tissues of both fishes was observed maximum in summer followed by winter and rainy (monsoon) seasons. Bioaccumulation factor (BAF) of all four metals in organs of M. seenghala was higher than C. Catla. Metal index value (MI) > 1 for Cd and Pb in water suggests that worse quality of water. The levels of heavy metals accumulated in two fishes might be due to the increase in agricultural influx water, domestic wastes, poultry farm, municipal and some other anthropogenic activities. This study shows that River water in the studied zone is a serious concern of human health and selected fishes do not feed directly without proper treatment of the riverine ecosystem, and potential danger may occur in the future.
{"title":"Distribution and bioaccumulation of heavy metal in water, sediment and fish tissue from the River Mahananda in Seemanchal zone, North Bihar, India","authors":"Arbind Kumar, Anil Kumar, S. Jha","doi":"10.22034/IJAB.V8I2.676","DOIUrl":"https://doi.org/10.22034/IJAB.V8I2.676","url":null,"abstract":"In the present study, distribution, and bioaccumulation of Cu, Zn, Cd, and Pb were analysed in water, sediment and freshwater fish tissues of Catla catla and Mystus seenghala which were seasonally collected from River Mahananda in Seemanchal zone. The results showed that except Pb, level of Cu, Zn and Cd in water were below than allowance limit of WHO (2008), while level of Cu, Zn and Cd in sediment was higher than a toxicity reference value (TRV) recommended by USEPA (1999), except Pb. Heavy metal concentration in water and sediment were recorded in the order: Cu>Pb>Zn>Cd and Zn>Cu>Pb>Cd, respectively. The seasonal variation of this metal in water was in the sequence: rainy>winter>summer, and in sediment summer>winter>rainy. Bioaccumulation of studied metal by different tissues of M. seenghala was maximum than C. catla , and found that following order of magnitude: liver>gill>muscle. The order of studied metal concentration in liver Zn>Pb>Cu>Cd, in Gills Zn>Pb>Cu>Cd, in muscle Zn>Pb>Cu. Pb was only metal whose concentration was higher than FAO, FAO/WHO and WHO standards in all examined tissues of both species . Bioaccumulation of Pb in different tissues of both fishes was observed maximum in summer followed by winter and rainy (monsoon) seasons. Bioaccumulation factor (BAF) of all four metals in organs of M. seenghala was higher than C. Catla. Metal index value (MI) > 1 for Cd and Pb in water suggests that worse quality of water. The levels of heavy metals accumulated in two fishes might be due to the increase in agricultural influx water, domestic wastes, poultry farm, municipal and some other anthropogenic activities. This study shows that River water in the studied zone is a serious concern of human health and selected fishes do not feed directly without proper treatment of the riverine ecosystem, and potential danger may occur in the future.","PeriodicalId":36975,"journal":{"name":"International Journal of Aquatic Biology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84793501","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}
Limnological survey (October 2013–September 2015) of Maghuri, Khamti Guali and No.11 floodplain lakes (beels) of the Dibru-Saikhowa Biosphere Reserve (DSBR), upper Assam, northeast India (NEI) revealed 210 (184±4) species of zooplankton, belonging 78 genera and 32 families, with several species of global and regional distribution interest. The biodiverse zooplankton assemblage and interesting taxa are hypothesized to habitat diversity and environmental heterogeneity of these wetlands located in the Assam-gateway’- an important biogeographic corridor of India. The monthly richness and community similarities depicted heterogeneity of zooplankton composition of the individual beels. Low abundance is attributed to soft–moderately hard waters with low ionic concentrations. Zooplankton richness and abundance followed no definite pattern of monthly or annual variations; Rotifera > Cladocera influenced overall diversity in the three beels. High species diversity affirmed habitat heterogeneity, while high evenness and low dominance without quantitative importance of any species affirmed ‘generalist nature’ of zooplankton of the different beels. Our results indicated limited influence of individual abiotic factors but CCA registered moderately high cumulative importance of seventeen abiotic factors on zooplankton assemblages of DSBR beels.
{"title":"Zooplankton diversity of three floodplain lakes of the Dibru-Saikhowa Biosphere reserve, upper Assam, northeast India","authors":"B. Sharma, Nogen Noroh","doi":"10.22034/IJAB.V8I1.730","DOIUrl":"https://doi.org/10.22034/IJAB.V8I1.730","url":null,"abstract":"Limnological survey (October 2013–September 2015) of Maghuri, Khamti Guali and No.11 floodplain lakes (beels) of the Dibru-Saikhowa Biosphere Reserve (DSBR), upper Assam, northeast India (NEI) revealed 210 (184±4) species of zooplankton, belonging 78 genera and 32 families, with several species of global and regional distribution interest. The biodiverse zooplankton assemblage and interesting taxa are hypothesized to habitat diversity and environmental heterogeneity of these wetlands located in the Assam-gateway’- an important biogeographic corridor of India. The monthly richness and community similarities depicted heterogeneity of zooplankton composition of the individual beels. Low abundance is attributed to soft–moderately hard waters with low ionic concentrations. Zooplankton richness and abundance followed no definite pattern of monthly or annual variations; Rotifera > Cladocera influenced overall diversity in the three beels. High species diversity affirmed habitat heterogeneity, while high evenness and low dominance without quantitative importance of any species affirmed ‘generalist nature’ of zooplankton of the different beels. Our results indicated limited influence of individual abiotic factors but CCA registered moderately high cumulative importance of seventeen abiotic factors on zooplankton assemblages of DSBR beels.","PeriodicalId":36975,"journal":{"name":"International Journal of Aquatic Biology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78845453","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}
R. Borah, Jyotirmoy Sonowal, Nipen Nayak, Akash Kachari, S. P. Biswas
The present study was carried out to enumerate induced breeding technique and larval development of Macrognathus pancalus (Hamilton, 1822) reared under captivity. Five different doses of Ovasis hormone (T 1 , T 2 , T 3 , T 4 , and T 5 ) with 3 replicas each were administered to the matured brooders to standardize the breeding performance of the target species. The results indicated variation in fertilization rate, latency period, egg output and hatching rate in response to different treatments. Spawning was occurred between 20-24 hrs of injection in all the experiments at 26.33±0.88 ° C water temperature. Among all the experimental trials, the highest fertilization rate was observed in T 3 (96.15±0.60) of E 2 and the highest hatching rate was observed in T 3 (92.49±1.00) of E 2 . The present work elucidated the viability of seed production of M. pancalus reared under confined condition which will useful for aquaculture and conservation.
{"title":"Induced breeding, embryonic and larval development of Macrognathus pancalus (Hamilton, 1822) under captive condition","authors":"R. Borah, Jyotirmoy Sonowal, Nipen Nayak, Akash Kachari, S. P. Biswas","doi":"10.22034/IJAB.V8I1.746","DOIUrl":"https://doi.org/10.22034/IJAB.V8I1.746","url":null,"abstract":"The present study was carried out to enumerate induced breeding technique and larval development of Macrognathus pancalus (Hamilton, 1822) reared under captivity. Five different doses of Ovasis hormone (T 1 , T 2 , T 3 , T 4 , and T 5 ) with 3 replicas each were administered to the matured brooders to standardize the breeding performance of the target species. The results indicated variation in fertilization rate, latency period, egg output and hatching rate in response to different treatments. Spawning was occurred between 20-24 hrs of injection in all the experiments at 26.33±0.88 ° C water temperature. Among all the experimental trials, the highest fertilization rate was observed in T 3 (96.15±0.60) of E 2 and the highest hatching rate was observed in T 3 (92.49±1.00) of E 2 . The present work elucidated the viability of seed production of M. pancalus reared under confined condition which will useful for aquaculture and conservation.","PeriodicalId":36975,"journal":{"name":"International Journal of Aquatic Biology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78814730","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}
Mohsen Ali, S. Soltanian, A. T. Mirghaed, M. akhlaghi, S. Hoseinifar, A. Esmailnejad
Lactic acid bacteria (LAB) are used in the aquaculture industry to improve growth indices and nutrition efficiency of farmed fish. Kefir is a natural probiotic that largely consists of these microorganisms. This study aimed to isolate LAB strains from kefir grains and investigate their effects on the intestinal microbiota and growth indices of juvenile rainbow trout. Based on the results, one isolate was identified as Lactobacillus faraginis (LF) and other one as En terococcus durans (ED), both were gram positive, non-hemolytic, catalase and oxidase negative. Both strains showed resistance to acidic environments and gastric juice and were able to grow against bile salts i.e. the hydrophobicity potential of both strains was evaluated above 50%. The results showed that both strains had appropriate and acceptable probiotic properties. A total of 480 juvenile fish with were randomly divided into eight groups viz. Control (basal diet), LF1 and LF2 receiving diets supplemented with L. faraginis at 10 7 and 10 8 cfu/g, respectively, ED1 and ED2 diets supplemented with E. durans at 10 7 and 10 8 cfu/g, respectively, Bactocell group receiving a diet supplemented with commercial probiotic Bactocell PA-10 (10 10 cfu/g), combined treatments LF1+ED1 (5×10 6 cfu/g) and LF2+ED2 (5×10 7 cfu/g). The strains were prepared in the form of lyophilized powder and added to the basal diet as supplements. Sampling was performed after 0, 30, 15, and 45 days feeding with the diets. In the in vivo investigation, the highest LAB colony counts were obtained for the ED2, Bactocell, LF2+ED2 and LF2 groups, respectively. The highest BWI, SGR, DWG, PER, and CF, and the lowest FCR were observed in the LF2+ED2, Bactocell, ED2, and LF2 groups, respectively. On the other hand, the LF2+ED2, Bactocell and LF2 treatments also had the highest survival rate. Apparently, the use of the tested LAB strains as probiotic in high doses (LF2, ED2) and in combination (LF2+ED2) could improve growth indices, the intestinal LAB population and survival rate in juvenile rainbow trout.
{"title":"The effect of oral administration of lactic acid bacteria isolated from kefir on intestinal microbiota, growth performance and survival in juvenile rainbow trout, Oncorhynchus mykiss","authors":"Mohsen Ali, S. Soltanian, A. T. Mirghaed, M. akhlaghi, S. Hoseinifar, A. Esmailnejad","doi":"10.22034/IJAB.V8I1.697","DOIUrl":"https://doi.org/10.22034/IJAB.V8I1.697","url":null,"abstract":"Lactic acid bacteria (LAB) are used in the aquaculture industry to improve growth indices and nutrition efficiency of farmed fish. Kefir is a natural probiotic that largely consists of these microorganisms. This study aimed to isolate LAB strains from kefir grains and investigate their effects on the intestinal microbiota and growth indices of juvenile rainbow trout. Based on the results, one isolate was identified as Lactobacillus faraginis (LF) and other one as En terococcus durans (ED), both were gram positive, non-hemolytic, catalase and oxidase negative. Both strains showed resistance to acidic environments and gastric juice and were able to grow against bile salts i.e. the hydrophobicity potential of both strains was evaluated above 50%. The results showed that both strains had appropriate and acceptable probiotic properties. A total of 480 juvenile fish with were randomly divided into eight groups viz. Control (basal diet), LF1 and LF2 receiving diets supplemented with L. faraginis at 10 7 and 10 8 cfu/g, respectively, ED1 and ED2 diets supplemented with E. durans at 10 7 and 10 8 cfu/g, respectively, Bactocell group receiving a diet supplemented with commercial probiotic Bactocell PA-10 (10 10 cfu/g), combined treatments LF1+ED1 (5×10 6 cfu/g) and LF2+ED2 (5×10 7 cfu/g). The strains were prepared in the form of lyophilized powder and added to the basal diet as supplements. Sampling was performed after 0, 30, 15, and 45 days feeding with the diets. In the in vivo investigation, the highest LAB colony counts were obtained for the ED2, Bactocell, LF2+ED2 and LF2 groups, respectively. The highest BWI, SGR, DWG, PER, and CF, and the lowest FCR were observed in the LF2+ED2, Bactocell, ED2, and LF2 groups, respectively. On the other hand, the LF2+ED2, Bactocell and LF2 treatments also had the highest survival rate. Apparently, the use of the tested LAB strains as probiotic in high doses (LF2, ED2) and in combination (LF2+ED2) could improve growth indices, the intestinal LAB population and survival rate in juvenile rainbow trout.","PeriodicalId":36975,"journal":{"name":"International Journal of Aquatic Biology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90169912","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}
Reza Shahifar, R. Patimar, H. Fazli, H. Raeisi, M. Gholizadeh, Hojjatallah Jafaryan
The Caspian Kutum , Rutilus frisii , is one of the endemic and most important commercial cyprinid species in the southern Caspian Sea. A detailed study on growth and mortality parameters of this species was conducted based on 700 samples collected from commercial catches of beach seining in Guilan and Mazanderan provinces during fishing season 2017-2018. Females were dominated in both studied populations. Size frequency distributions showed significant variation among same sexes and between different sexes. The different WLRs were observed, positive allometric in Mazanderan, and negative allometric in Guilan. There were significant differences in growth parameters between sexes, females were of much greater asymptotic length than males, while the male fish had a higher growth rate and attained a smaller theoretical L ∞ size than females. The theoretical maximum length ( L ∞ ) was larger than the maximum one recorded during sampling. Based on the Bhattacharya method, the Caspian kutum from Guilan fishing grounds was more diverse, and included nine cohorts, while the population from Mazanderan Province showed only six cohorts. The linearized catch curve based on age composition data showed that total mortality rates ( Z ) are 1.32 year -1 and 0.63 year -1 for males and females of Guilan, respectively, that of males in Mazanderan is 1.04 year -1 and of females 0.86 year -1 . The natural mortality rates ( M ) were 0.48 year -1 for males and 0.26 year -1 females in Guilan, and was found to be as 0.26 year -1 and 0.45 year -1 for males and females of Caspian kutum caught in Mazanderan. The exploitation ratio ( E ) was found to be higher than 0.5 for both sexes from Guilan, and to be lower than the expected optimum level of exploitation in Caspian kutum males and females caught in Mazanderan.
{"title":"Growth and mortality parameters of Caspian kutum, Rutilus kutum, in southern Caspian Sea","authors":"Reza Shahifar, R. Patimar, H. Fazli, H. Raeisi, M. Gholizadeh, Hojjatallah Jafaryan","doi":"10.22034/IJAB.V8I1.677","DOIUrl":"https://doi.org/10.22034/IJAB.V8I1.677","url":null,"abstract":"The Caspian Kutum , Rutilus frisii , is one of the endemic and most important commercial cyprinid species in the southern Caspian Sea. A detailed study on growth and mortality parameters of this species was conducted based on 700 samples collected from commercial catches of beach seining in Guilan and Mazanderan provinces during fishing season 2017-2018. Females were dominated in both studied populations. Size frequency distributions showed significant variation among same sexes and between different sexes. The different WLRs were observed, positive allometric in Mazanderan, and negative allometric in Guilan. There were significant differences in growth parameters between sexes, females were of much greater asymptotic length than males, while the male fish had a higher growth rate and attained a smaller theoretical L ∞ size than females. The theoretical maximum length ( L ∞ ) was larger than the maximum one recorded during sampling. Based on the Bhattacharya method, the Caspian kutum from Guilan fishing grounds was more diverse, and included nine cohorts, while the population from Mazanderan Province showed only six cohorts. The linearized catch curve based on age composition data showed that total mortality rates ( Z ) are 1.32 year -1 and 0.63 year -1 for males and females of Guilan, respectively, that of males in Mazanderan is 1.04 year -1 and of females 0.86 year -1 . The natural mortality rates ( M ) were 0.48 year -1 for males and 0.26 year -1 females in Guilan, and was found to be as 0.26 year -1 and 0.45 year -1 for males and females of Caspian kutum caught in Mazanderan. The exploitation ratio ( E ) was found to be higher than 0.5 for both sexes from Guilan, and to be lower than the expected optimum level of exploitation in Caspian kutum males and females caught in Mazanderan.","PeriodicalId":36975,"journal":{"name":"International Journal of Aquatic Biology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75712004","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}
Miscellany in histochemical peculiarity of the olfactory mucosa was studied for localization of axons, mucopolysaccharides, glycogen, protein and lipid in schilbid catfish, Eutropiichthys vacha (Hamilton, 1822). Silver deposition was detected in the abundance of receptor cells in the olfactosensory epithelium and well as marked in the knob and dendrite process of primary receptor cells. The mucous cells with various stages of maturity containing different degrees of mucopolysaccharides were identified by employing the Periodic Acid Schiff's (PAS) reaction in combination with Alcian Blue (AB) test. This combined test imparted purple colour due to PAS for neutral mucin and blue colour for AB reaction due to the presence of acid mucin exclusively. The results of Best’s carmine test indicated considerable amount of glycogen present in the receptor cells, basal cells and supporting cells in the olfactory mucosa. Basic protein and bound lipid were ascertained in the various cells of the epithelial lining and in blood cells of the central core were discussed with behavioural activities of the fish interested.
{"title":"The olfactory mucosa of river catfish, Eutropiichthys vacha (Hamilton, 1822): Histochemical studies","authors":"Saroj Kumar Ghosh, Surajit Das","doi":"10.22034/IJAB.V8I1.773","DOIUrl":"https://doi.org/10.22034/IJAB.V8I1.773","url":null,"abstract":"Miscellany in histochemical peculiarity of the olfactory mucosa was studied for localization of axons, mucopolysaccharides, glycogen, protein and lipid in schilbid catfish, Eutropiichthys vacha (Hamilton, 1822). Silver deposition was detected in the abundance of receptor cells in the olfactosensory epithelium and well as marked in the knob and dendrite process of primary receptor cells. The mucous cells with various stages of maturity containing different degrees of mucopolysaccharides were identified by employing the Periodic Acid Schiff's (PAS) reaction in combination with Alcian Blue (AB) test. This combined test imparted purple colour due to PAS for neutral mucin and blue colour for AB reaction due to the presence of acid mucin exclusively. The results of Best’s carmine test indicated considerable amount of glycogen present in the receptor cells, basal cells and supporting cells in the olfactory mucosa. Basic protein and bound lipid were ascertained in the various cells of the epithelial lining and in blood cells of the central core were discussed with behavioural activities of the fish interested.","PeriodicalId":36975,"journal":{"name":"International Journal of Aquatic Biology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91046239","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}
F. Abolhasani, Iraj Hashemzadeh, Mohamad Saieed Heidarnejad, Seyedeh Narjes Tabatabaei
This study was aimed to reveal the possible cryptic diversity of the Aphanius vladykovi populations in the Chaharmahal va Bakhtiari Province, Iran using mitochondrial cytochrome-c oxidase subunit I (COI). A total of 30 specimens from the Beheshtabad River, Choghakhor and Gandoman Wetlands, and Brovi, Shalamzar, and Balagholi springs from the Chaharmahal va Bakhtiari Province were collected. The maximum within-population genetic distance based on K2P was 0.28% and this distance was 0.22% between populations of Gandoman and Brovi with Shalmazar, whereas the least genetic distance was observed between Choghakhor and Beheshtabad (0.09%). A total of six haplotypes were observed between the studied specimens. Maximum Likelihood (ML) and Neighbor-Joining (NJ) trees reconstructed and all haplotypes from A. vladykovi specimens collected from non-type localities nested in one group with A. vladykovi from Choghakhor wetland i.e. type locality. The results of this study detected no cryptic diversity in A. vladykovi inhabiting different habitats in the studied region. Hence, it is proposed to consider all the studied populations in conservation measures related to A. vladycovi .
本研究旨在利用线粒体细胞色素c氧化酶亚基I (COI)揭示伊朗Chaharmahal va Bakhtiari省Aphanius vladykovi种群可能的隐多样性。在Beheshtabad河、Choghakhor和Gandoman湿地以及Chaharmahal va Bakhtiari省的Brovi、Shalamzar和Balagholi泉共采集了30个标本。基于K2P的居群内遗传距离最大为0.28%，甘道夫、布洛维与沙玛扎尔居群间遗传距离为0.22%，而乔格哈尔与贝什塔巴德居群间遗传距离最小(0.09%)。在所研究的标本之间共观察到6个单倍型。最大似然树(ML)和邻接树(NJ)的重建结果表明，来自非类型区的A. vladykovi标本的所有单倍型均与来自Choghakhor湿地(类型区)的A. vladykovi标本嵌套在同一类型区。研究结果表明，不同生境下的紫桫椤未发现隐种多样性。因此，建议在保护措施中考虑所有被研究的种群。
{"title":"DNA barcoding of Aphanius vladykovi from different habitats in Chaharmahal va Bakhtiari Province, Iran","authors":"F. Abolhasani, Iraj Hashemzadeh, Mohamad Saieed Heidarnejad, Seyedeh Narjes Tabatabaei","doi":"10.22034/IJAB.V8I1.612","DOIUrl":"https://doi.org/10.22034/IJAB.V8I1.612","url":null,"abstract":"This study was aimed to reveal the possible cryptic diversity of the Aphanius vladykovi populations in the Chaharmahal va Bakhtiari Province, Iran using mitochondrial cytochrome-c oxidase subunit I (COI). A total of 30 specimens from the Beheshtabad River, Choghakhor and Gandoman Wetlands, and Brovi, Shalamzar, and Balagholi springs from the Chaharmahal va Bakhtiari Province were collected. The maximum within-population genetic distance based on K2P was 0.28% and this distance was 0.22% between populations of Gandoman and Brovi with Shalmazar, whereas the least genetic distance was observed between Choghakhor and Beheshtabad (0.09%). A total of six haplotypes were observed between the studied specimens. Maximum Likelihood (ML) and Neighbor-Joining (NJ) trees reconstructed and all haplotypes from A. vladykovi specimens collected from non-type localities nested in one group with A. vladykovi from Choghakhor wetland i.e. type locality. The results of this study detected no cryptic diversity in A. vladykovi inhabiting different habitats in the studied region. Hence, it is proposed to consider all the studied populations in conservation measures related to A. vladycovi .","PeriodicalId":36975,"journal":{"name":"International Journal of Aquatic Biology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89319446","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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