S. Hashemi, M. Doustdar, J. Ghasemzadeh, A. Gholampour
In the present study, population characteristics of Katsuwonus pelamis were evaluated by sampling fish at five fish landing sites in the northern Oman Sea (Iran) including Beris, Ramin, Pozm, Konarak and Jask from March 2017 to March 2018. The biometric analysis was performed on more than eleven thousand fish. Growth and mortality indices were calculated including infinite length (L∞=88cm), growth coefficient (K=0.3 (yr -1 )), growth performance index (Ф=4.19), natural mortality (M= 0.58(yr -1 )), fishing mortality (F=0.3 (yr -1 )), total mortality (Z=0.88±0.1 (yr -1 )) and exploitation coefficient (E = 0.34 (yr -1 )) as well as length time at time zero (-0.41). Relative production per recruitment, relative biomass per recruitment and exploitation rate of K. pelamis were Y'/R p =0.01, B' /R p =0.4 and U=0.22, respectively. The present study showed that the K. pelamis had desirable stock conditions and fish stocks have not reached 'overfished' status. The Pobj value is 1 0, the fishery show considered medium desirable. According to the terms and situation mentioned conditions assessed, and considering the sustainable fishing requirements, it is possible to increase the catch of this species in the south of the country.
{"title":"Length-based fishery status of skipjack tuna, Katsuwonus pelamis (Linnaeus, 1758) (Teleostei: Scombridae: Scombrinae) in the northern waters of the Oman Sea (Iran)","authors":"S. Hashemi, M. Doustdar, J. Ghasemzadeh, A. Gholampour","doi":"10.22034/IJI.V8I3.552","DOIUrl":"https://doi.org/10.22034/IJI.V8I3.552","url":null,"abstract":"In the present study, population characteristics of Katsuwonus pelamis were evaluated by sampling fish at five fish landing sites in the northern Oman Sea (Iran) including Beris, Ramin, Pozm, Konarak and Jask from March 2017 to March 2018. The biometric analysis was performed on more than eleven thousand fish. Growth and mortality indices were calculated including infinite length (L∞=88cm), growth coefficient (K=0.3 (yr -1 )), growth performance index (Ф=4.19), natural mortality (M= 0.58(yr -1 )), fishing mortality (F=0.3 (yr -1 )), total mortality (Z=0.88±0.1 (yr -1 )) and exploitation coefficient (E = 0.34 (yr -1 )) as well as length time at time zero (-0.41). Relative production per recruitment, relative biomass per recruitment and exploitation rate of K. pelamis were Y'/R p =0.01, B' /R p =0.4 and U=0.22, respectively. The present study showed that the K. pelamis had desirable stock conditions and fish stocks have not reached 'overfished' status. The Pobj value is 1 0, the fishery show considered medium desirable. According to the terms and situation mentioned conditions assessed, and considering the sustainable fishing requirements, it is possible to increase the catch of this species in the south of the country.","PeriodicalId":14599,"journal":{"name":"Iranian Journal of Ichthyology","volume":"8 1","pages":"160-169"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48290768","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}
Maryam Sharifiniya, H. Mousavi-Sabet, Mohammad Sadegh Alavi-Yeganeh, M. Ghanbarifardi
First record of the Triplefin fish (Blenniiformes: Tripterygiidae), Helcogramma ellioti , is reported here based on six specimens collected from Chabahar, northern Gulf of Oman in February 2019. Identification was confirmed based on a series of morphological characters including, a minute supraorbital tentacle, 3-5 symphyseal mandibular pores, a numerous number of scales in lateral line (36-37) and a low number of total lateral scale rows (38-39). Specimens were found in coral reef areas at depths of 1-15m of the Gulf of Oman in the Indo-Pacific region. Compared to the other members of Helcogramma , H. ellioti is regarded as a medium to large body size species (25.0-57.0mm SL). Although several species of triplefin fishes have been reported from the Persian Gulf, but, it is the first record from Tripterygiidae for the Iranian waters of the Gulf of Oman.
{"title":"First record of the Triplefin fish, Helcogramma ellioti (Herre, 1944), from the Gulf of Oman, Iran (Blennioidei: Tripterygiidae: Tripterygiinae)","authors":"Maryam Sharifiniya, H. Mousavi-Sabet, Mohammad Sadegh Alavi-Yeganeh, M. Ghanbarifardi","doi":"10.22034/IJI.V8I3.649","DOIUrl":"https://doi.org/10.22034/IJI.V8I3.649","url":null,"abstract":"First record of the Triplefin fish (Blenniiformes: Tripterygiidae), Helcogramma ellioti , is reported here based on six specimens collected from Chabahar, northern Gulf of Oman in February 2019. Identification was confirmed based on a series of morphological characters including, a minute supraorbital tentacle, 3-5 symphyseal mandibular pores, a numerous number of scales in lateral line (36-37) and a low number of total lateral scale rows (38-39). Specimens were found in coral reef areas at depths of 1-15m of the Gulf of Oman in the Indo-Pacific region. Compared to the other members of Helcogramma , H. ellioti is regarded as a medium to large body size species (25.0-57.0mm SL). Although several species of triplefin fishes have been reported from the Persian Gulf, but, it is the first record from Tripterygiidae for the Iranian waters of the Gulf of Oman.","PeriodicalId":14599,"journal":{"name":"Iranian Journal of Ichthyology","volume":"8 1","pages":"181-188"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41347305","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}
W. Al-Mehana, M. K. Al-Shibly, Farqad Hasan Falih Al-Daemi
The cultural optimum conditions for oxalic acid production from two fungi isolates viz. Aspergillus niger and A. flavus were studied by, including carbon, nitrogen source, salts and pH. The results showed that the molasses can be used as a carbon source of the acid production and its best concentration was 5.6 for both isolates, while the best nitrogen source was the ammonium sulphate with production of 24.1 and 21.3g/l for both fungi, respectively. Based on the results, KH 2 PO 4 0.1+MgSO 4 .7H 2 O 0.05% was the best compound for production. pH value with higher mount of acid production was 6.5.
{"title":"Optimal conditions for oxalic acid production by Aspergillus niger and A. flavus","authors":"W. Al-Mehana, M. K. Al-Shibly, Farqad Hasan Falih Al-Daemi","doi":"10.22034/IJI.V8I0.661","DOIUrl":"https://doi.org/10.22034/IJI.V8I0.661","url":null,"abstract":"The cultural optimum conditions for oxalic acid production from two fungi isolates viz. Aspergillus niger and A. flavus were studied by, including carbon, nitrogen source, salts and pH. The results showed that the molasses can be used as a carbon source of the acid production and its best concentration was 5.6 for both isolates, while the best nitrogen source was the ammonium sulphate with production of 24.1 and 21.3g/l for both fungi, respectively. Based on the results, KH 2 PO 4 0.1+MgSO 4 .7H 2 O 0.05% was the best compound for production. pH value with higher mount of acid production was 6.5.","PeriodicalId":14599,"journal":{"name":"Iranian Journal of Ichthyology","volume":"8 1","pages":"138-144"},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46806278","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}
The present study aimed to the evaluation the effects of age, sex and hormonal treatment on the plasma and hematological parameters of Aristichthys nobilis . A total of 80 fish in four treatments, including, four different ages :9-months,1, 2 and 3 years old males and females injected by pituitary gland. Based on the results, age was caused an increases in red blood cell (RBC), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), Hemoglobin (Hb) and Haematocrite, neutrophil and lymphocyte percent ( P 0.05). The plasma biochemical parameters, including calcium, glucose, cholesterol, triglycerides, protein and phosphorus changed with age and hormonal treatment respectively. The parameters of the hematocrit, hemoglobin, RBC, WBC, MCV, MCH, lymphocyte, calcium, glucose, cholesterol, triglyceride and phosphorus also showed sex dependent differences. But, there was no significant difference between plasma and hematological parameters before and after the hormonal injection in both sexes.
{"title":"Effect of age, sex and hormonal treatment on hematological and plasma indices of Aristichthys nobilis","authors":"I. Heidari, H. Khara, H. Vahabzadeh","doi":"10.22034/IJI.V8I2.274","DOIUrl":"https://doi.org/10.22034/IJI.V8I2.274","url":null,"abstract":"The present study aimed to the evaluation the effects of age, sex and hormonal treatment on the plasma and hematological parameters of Aristichthys nobilis . A total of 80 fish in four treatments, including, four different ages :9-months,1, 2 and 3 years old males and females injected by pituitary gland. Based on the results, age was caused an increases in red blood cell (RBC), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), Hemoglobin (Hb) and Haematocrite, neutrophil and lymphocyte percent ( P 0.05). The plasma biochemical parameters, including calcium, glucose, cholesterol, triglycerides, protein and phosphorus changed with age and hormonal treatment respectively. The parameters of the hematocrit, hemoglobin, RBC, WBC, MCV, MCH, lymphocyte, calcium, glucose, cholesterol, triglyceride and phosphorus also showed sex dependent differences. But, there was no significant difference between plasma and hematological parameters before and after the hormonal injection in both sexes.","PeriodicalId":14599,"journal":{"name":"Iranian Journal of Ichthyology","volume":"8 1","pages":"151-159"},"PeriodicalIF":0.0,"publicationDate":"2021-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45092539","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}
Pseudomonas aeruginosa is Gram-negative, considered as the most common opportunistic pathogens which lead to high rate of mortality and morbidity when subject suffered from compromised immune systems. This study was aimed to estimate the lasI and lasR genes expression of P. aeruginosa isolated from children with nephrotic syndrome. Nineteen isolates from urine samples of children with nephropathy syndrome are included in this study and confirmed by VITEK test as a P. aeruginosa strains. The result showed that the LasI and LasR genes showed a high level of gene expression in strains that grown with ceftriaxone than the strains that grown alone, but the gene Las I had a higher level of expression than the Las R gene, also a regression analysis were done to reveal the effect of Las I on the Las R gene which showed a positive effect which mean any increment in the gene expression level of Las I gene will combined with an increment in the Las R gene, (R= 0.899 and P= 0.001).
{"title":"Virulence gene expression of Pseudomonas aeruginosa isolated from children with nephrotic syndrome","authors":"Z. Hatem, A. Hammad, S. Jasim","doi":"10.22034/IJI.V8I0.655","DOIUrl":"https://doi.org/10.22034/IJI.V8I0.655","url":null,"abstract":"Pseudomonas aeruginosa is Gram-negative, considered as the most common opportunistic pathogens which lead to high rate of mortality and morbidity when subject suffered from compromised immune systems. This study was aimed to estimate the lasI and lasR genes expression of P. aeruginosa isolated from children with nephrotic syndrome. Nineteen isolates from urine samples of children with nephropathy syndrome are included in this study and confirmed by VITEK test as a P. aeruginosa strains. The result showed that the LasI and LasR genes showed a high level of gene expression in strains that grown with ceftriaxone than the strains that grown alone, but the gene Las I had a higher level of expression than the Las R gene, also a regression analysis were done to reveal the effect of Las I on the Las R gene which showed a positive effect which mean any increment in the gene expression level of Las I gene will combined with an increment in the Las R gene, (R= 0.899 and P= 0.001).","PeriodicalId":14599,"journal":{"name":"Iranian Journal of Ichthyology","volume":"8 1","pages":"133-137"},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46215437","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}
The chemical composition of Prosopis farcta extracts was prepared and analyzed by GC-MS. Ten phytochemical constituents were identified in the fruit of P. farcta . The relative percentage of Palmitic acid methyl ester was high (32.61%) followed by 9-12 octadecenoic acid methyl ester (23.16%) and then stearic acid methyl ester (13.93%), 10-octadecenoic acid methyl ester (13.05), 9-Hexadecanoic acid methyl ester (5.41%), linoleic acid methyl ester (4.13%) and some components present at lower percentages such as pentadecanoic acid methyl ester (1.01%).
{"title":"Chemical composition of Prosopis farcta (Banks & Soland) Macbride (Leguminoseae or Fabaceae) fruits","authors":"Alla N. Al-Waheeb","doi":"10.22034/IJI.V8I0.652","DOIUrl":"https://doi.org/10.22034/IJI.V8I0.652","url":null,"abstract":"The chemical composition of Prosopis farcta extracts was prepared and analyzed by GC-MS. Ten phytochemical constituents were identified in the fruit of P. farcta . The relative percentage of Palmitic acid methyl ester was high (32.61%) followed by 9-12 octadecenoic acid methyl ester (23.16%) and then stearic acid methyl ester (13.93%), 10-octadecenoic acid methyl ester (13.05), 9-Hexadecanoic acid methyl ester (5.41%), linoleic acid methyl ester (4.13%) and some components present at lower percentages such as pentadecanoic acid methyl ester (1.01%).","PeriodicalId":14599,"journal":{"name":"Iranian Journal of Ichthyology","volume":"8 1","pages":"120-126"},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46727950","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 checklist of the fishes of the order Gobiiformes is presented. The checklist contains 3585 nominal species names (including 77 as incertae sedis and 50 not available names) representing 2310 valid species in 324 genera. Species and genera are grouped within seven families (Agorreta et al. 2013): Ryacichthyidae, Odontobutidae, Butidae, Eleotrididae, Milyeringidae, Thalasseleotrididae and Gobiidae. The formerly family Xenisthmidae is included in Eleotrididae. The family Gobiidae is the largest marine fish family with 2086 species, one fourth of Gobiidae inhabiting freshwaters and grouped in nine subfamilies (Agorreta et al. 2013): Amblyopinae, Gobiinae, Gobionellinae, Oxudercinae, Sicydiinae, Kraemeriinae, Microdesminae, Ptereleotrinae, and Schindleriinae. The most speciose genus is Eviota with 123 species, followed by Trimma (107 species) and Rhinogobius (86 species); 20 genera contain 21 to 39 species, 42 genera include 10 to 20 species, 102 genera are monotypic, whereas 55 contain only two species and 104 genera contain 3–9 species. From the nominal species that are listed as incertae sedis in current literature I was able to remove the following combinations which are here regarded as new synonyms: Batrachus guavina Bloch and Schneider, 1801 is a senior synonym of Guavina guavina (Valenciennes, 1837); Eleotris lucani Rochebrune, 1885 is a junior synonym of Dormitator lebretonis (Steindachner, 1870); Eleotris siculus Swainson, 1839 is a senior synonym of Odondebuenia balearica (Pellegrin and Fage 1907); Gobius aterrimus Rafinesque, 1814 is a junior synonym of Gobius niger Linnaeus, 1758); Gobius erythrostomus Walbaum, 1792 is a junior synonym of Gobius cruentatus Gmelin, 1789; Gobius djiddensis Bonnaterre, 1788 is a senior synonym of Cryptocentroides arabicus (Gmelin, 1789)]; Gobius pustulatus Bonnaterre, 1788 is a senior synonym of Gobius cruentatus Gmelin, 1789; Gobius miniaceus Rochebrune, 1885 is a junior synonym of Porogobius schlegelii (Gunther, 1861)]; Scorpaena diepiptera Bianconi, 1862 is a junior synonym Butis butis Hamilton, 1822. Regalecus lanceolatus Lacepede, 1800 is a senior synonym of Acanthogobius hasta (Temminck and Schlegel, 1845) and together with Batrachus guavina Bloch and Schneider, 1801, Eleotris siculus Swainson, 1839, Diaphoroculius rangiroae Fowler, 1938, Gobius djiddensis Bonnaterre, 1788 and Gobius pustulatus Bonnaterre, 1788 are all here declared nomina oblita . Gobius miniaceus Rochebrune, 1885 is a junior synonym of Porogobius schlegelii (Gunther, 1861); Gobius mediterraneus Bloch and Schneider, 1801 is here regarded as a new synonym of G. niger Linnaeus, 1758.
{"title":"A checklist of the gobioid fishes of the world (Percomorpha: Gobiiformes)","authors":"P. Parenti","doi":"10.22034/IJI.V8I0.556","DOIUrl":"https://doi.org/10.22034/IJI.V8I0.556","url":null,"abstract":"A checklist of the fishes of the order Gobiiformes is presented. The checklist contains 3585 nominal species names (including 77 as incertae sedis and 50 not available names) representing 2310 valid species in 324 genera. Species and genera are grouped within seven families (Agorreta et al. 2013): Ryacichthyidae, Odontobutidae, Butidae, Eleotrididae, Milyeringidae, Thalasseleotrididae and Gobiidae. The formerly family Xenisthmidae is included in Eleotrididae. The family Gobiidae is the largest marine fish family with 2086 species, one fourth of Gobiidae inhabiting freshwaters and grouped in nine subfamilies (Agorreta et al. 2013): Amblyopinae, Gobiinae, Gobionellinae, Oxudercinae, Sicydiinae, Kraemeriinae, Microdesminae, Ptereleotrinae, and Schindleriinae. The most speciose genus is Eviota with 123 species, followed by Trimma (107 species) and Rhinogobius (86 species); 20 genera contain 21 to 39 species, 42 genera include 10 to 20 species, 102 genera are monotypic, whereas 55 contain only two species and 104 genera contain 3–9 species. From the nominal species that are listed as incertae sedis in current literature I was able to remove the following combinations which are here regarded as new synonyms: Batrachus guavina Bloch and Schneider, 1801 is a senior synonym of Guavina guavina (Valenciennes, 1837); Eleotris lucani Rochebrune, 1885 is a junior synonym of Dormitator lebretonis (Steindachner, 1870); Eleotris siculus Swainson, 1839 is a senior synonym of Odondebuenia balearica (Pellegrin and Fage 1907); Gobius aterrimus Rafinesque, 1814 is a junior synonym of Gobius niger Linnaeus, 1758); Gobius erythrostomus Walbaum, 1792 is a junior synonym of Gobius cruentatus Gmelin, 1789; Gobius djiddensis Bonnaterre, 1788 is a senior synonym of Cryptocentroides arabicus (Gmelin, 1789)]; Gobius pustulatus Bonnaterre, 1788 is a senior synonym of Gobius cruentatus Gmelin, 1789; Gobius miniaceus Rochebrune, 1885 is a junior synonym of Porogobius schlegelii (Gunther, 1861)]; Scorpaena diepiptera Bianconi, 1862 is a junior synonym Butis butis Hamilton, 1822. Regalecus lanceolatus Lacepede, 1800 is a senior synonym of Acanthogobius hasta (Temminck and Schlegel, 1845) and together with Batrachus guavina Bloch and Schneider, 1801, Eleotris siculus Swainson, 1839, Diaphoroculius rangiroae Fowler, 1938, Gobius djiddensis Bonnaterre, 1788 and Gobius pustulatus Bonnaterre, 1788 are all here declared nomina oblita . Gobius miniaceus Rochebrune, 1885 is a junior synonym of Porogobius schlegelii (Gunther, 1861); Gobius mediterraneus Bloch and Schneider, 1801 is here regarded as a new synonym of G. niger Linnaeus, 1758.","PeriodicalId":14599,"journal":{"name":"Iranian Journal of Ichthyology","volume":"8 1","pages":"1-480"},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42908568","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}
Azaz A. Sidat, Prajokta Mukherji, Tejaswita Trivedi, P. Mankodi
A checklist of marine fishes from the coastal areas of Jakhau and Mandvi, Gulf of Kachchh, west coast of Gujarat, India, was compiled through the fish collection from December 2013 to March 2015. On examination, a total of 20 orders, 47 families and 96 species were recorded. Of these four species were recorded from class Elasmobranchii and 92 species from class Actinopterygii. The Family Carangidae showed species dominance with 10 individuals, while the order Eupercaria is dominated with 18 numbers of species. The checklist contains 10 Not evaluated species, 6 Data deficient species, 68 Least concern species, 5 near-threatened species, 4 Vulnerable, 2 Endangered, and 1 Critically endangered species as per IUCN red list records. Of the total 96 species, the Jakhau sampling site reported 74 species; Mandvi sampling site reported 77 species, while 54 species were reported common from both the sites. Deveximentum indicium (Monkolprasit, 1973) was reported for the first time from Jakhau sampling station of Gulf of Kachchh, Gujarat. Further research is needed for better understanding and conservation of such species. The detailed study of fish habitats in the Kachchh Gulf will provide an insight into diversity and exposures to habitat destruction.
{"title":"Ichthyofauna species diversity of Gulf of Kachchh, Gujarat, India Case study: Jakhau and Mandvi coast","authors":"Azaz A. Sidat, Prajokta Mukherji, Tejaswita Trivedi, P. Mankodi","doi":"10.22034/IJI.V8I2.462","DOIUrl":"https://doi.org/10.22034/IJI.V8I2.462","url":null,"abstract":"A checklist of marine fishes from the coastal areas of Jakhau and Mandvi, Gulf of Kachchh, west coast of Gujarat, India, was compiled through the fish collection from December 2013 to March 2015. On examination, a total of 20 orders, 47 families and 96 species were recorded. Of these four species were recorded from class Elasmobranchii and 92 species from class Actinopterygii. The Family Carangidae showed species dominance with 10 individuals, while the order Eupercaria is dominated with 18 numbers of species. The checklist contains 10 Not evaluated species, 6 Data deficient species, 68 Least concern species, 5 near-threatened species, 4 Vulnerable, 2 Endangered, and 1 Critically endangered species as per IUCN red list records. Of the total 96 species, the Jakhau sampling site reported 74 species; Mandvi sampling site reported 77 species, while 54 species were reported common from both the sites. Deveximentum indicium (Monkolprasit, 1973) was reported for the first time from Jakhau sampling station of Gulf of Kachchh, Gujarat. Further research is needed for better understanding and conservation of such species. The detailed study of fish habitats in the Kachchh Gulf will provide an insight into diversity and exposures to habitat destruction.","PeriodicalId":14599,"journal":{"name":"Iranian Journal of Ichthyology","volume":"8 1","pages":"134-150"},"PeriodicalIF":0.0,"publicationDate":"2021-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45101162","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}
The von Bertalanffy growth model (VBGM) is often preferred in the estimation of growth parameters and curves in bony fishes but is rarely evaluated for its accuracy. The aim of this study is to prove that the growth period of some demersal fish species is biphasic. Two growth models (two-phase growth model (TPGM) and VBGM) were used to estimate the growth parameters of the mentioned species and the results were compared by Akaike's Information Criterion (AIC). In 11 cases out of 15 which were tested for different sexes and combined sets, TPGM was determined to reveal more reliable estimations and provides better goodness of fit according to Akaike's Information Criterion (AIC), Δ i, and w criteria. It is also found that VBGM tended to yield higher L ∞ values and therefore should not be considered as the unique model. It is concluded that the two-phase growth model was the best model for overall cases in this study and it is recommended that comparisons should be performed among different models before the construction of a growth curve for any fish species.
von Bertalanffy生长模型(VBGM)通常是硬骨鱼类生长参数和曲线估计的首选方法，但很少对其准确性进行评估。本研究的目的是证明一些底栖鱼类的生长期是双相的。采用两期生长模型(TPGM)和VBGM两种生长模型估计了上述物种的生长参数，并采用赤池信息准则(Akaike’s Information Criterion, AIC)对结果进行了比较。在15例不同性别和组合集测试中的11例中，TPGM根据赤池信息标准(AIC)， Δ i和w标准确定了更可靠的估计，并提供了更好的拟合优度。还发现VBGM倾向于产生更高的L∞值，因此不应将其视为唯一模型。结果表明，两阶段生长模型是本研究总体情况下的最佳模型，建议在构建任何鱼种的生长曲线之前，对不同的模型进行比较。
{"title":"Determination of two-phase growth in demersal fish species from the southern Black Sea coast","authors":"Ayşe Van, A. Gümüş","doi":"10.22034/IJI.V8I2.506","DOIUrl":"https://doi.org/10.22034/IJI.V8I2.506","url":null,"abstract":"The von Bertalanffy growth model (VBGM) is often preferred in the estimation of growth parameters and curves in bony fishes but is rarely evaluated for its accuracy. The aim of this study is to prove that the growth period of some demersal fish species is biphasic. Two growth models (two-phase growth model (TPGM) and VBGM) were used to estimate the growth parameters of the mentioned species and the results were compared by Akaike's Information Criterion (AIC). In 11 cases out of 15 which were tested for different sexes and combined sets, TPGM was determined to reveal more reliable estimations and provides better goodness of fit according to Akaike's Information Criterion (AIC), Δ i, and w criteria. It is also found that VBGM tended to yield higher L ∞ values and therefore should not be considered as the unique model. It is concluded that the two-phase growth model was the best model for overall cases in this study and it is recommended that comparisons should be performed among different models before the construction of a growth curve for any fish species.","PeriodicalId":14599,"journal":{"name":"Iranian Journal of Ichthyology","volume":"8 1","pages":"125-133"},"PeriodicalIF":0.0,"publicationDate":"2021-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45058649","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}
Jayedul Islam, Tania Siddiqueki, A. K. Neogi, M. Y. Hossain, M. Hammer, K. Habib
This paper deals with three new distributional records of gobies viz. Amblyeleotris downingi Randall, 1994, Psammogobius biocellatus (Valenciennes, 1837), and Valenciennea muralis (Valenciennes, 1837) from Bangladeshi waters in the northernmost part of the Bay of Bengal. The examined specimens are identified and described by morphomeristic characteristics in addition to DNA barcoding based on mitochondrial COI gene. The COI barcode sequence of Amblyeleotris downingi is submitted for the first time in the GenBank. In addition, an updated checklist of gobies of the country is also compiled in this paper.
{"title":"Morphology and DNA barcode confirm three new records of gobies (Gobiiformes: Gobiidae) from Bangladesh","authors":"Jayedul Islam, Tania Siddiqueki, A. K. Neogi, M. Y. Hossain, M. Hammer, K. Habib","doi":"10.22034/IJI.V8I2.584","DOIUrl":"https://doi.org/10.22034/IJI.V8I2.584","url":null,"abstract":"This paper deals with three new distributional records of gobies viz. Amblyeleotris downingi Randall, 1994, Psammogobius biocellatus (Valenciennes, 1837), and Valenciennea muralis (Valenciennes, 1837) from Bangladeshi waters in the northernmost part of the Bay of Bengal. The examined specimens are identified and described by morphomeristic characteristics in addition to DNA barcoding based on mitochondrial COI gene. The COI barcode sequence of Amblyeleotris downingi is submitted for the first time in the GenBank. In addition, an updated checklist of gobies of the country is also compiled in this paper.","PeriodicalId":14599,"journal":{"name":"Iranian Journal of Ichthyology","volume":"8 1","pages":"114-124"},"PeriodicalIF":0.0,"publicationDate":"2021-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43553804","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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