Journal of Fisheries最新文献_第3页

Data-limited stock assessment of red mullet (Mullus barbatus) from the Iskenderun Bay, the north-eastern Mediterranean Sea 地中海东北部伊斯肯德伦湾红鲻鱼(Mullus barbatus)有限数据种群评估

IF 0.7

Journal of Fisheries Pub Date : 2022-07-07 DOI: 10.17017/j.fish.307

C. Turan

{"title":"Data-limited stock assessment of red mullet (Mullus barbatus) from the Iskenderun Bay, the north-eastern Mediterranean Sea","authors":"C. Turan","doi":"10.17017/j.fish.307","DOIUrl":"https://doi.org/10.17017/j.fish.307","url":null,"abstract":"Stock size and status of red mullet Mullus barbatus were assessed via virtual population analysis and yield prediction analysis using on-board observed length-frequency catch data from the north-eastern Mediterranean Sea. The von Bertalanffy growth parameters obtained were L∞ = 35.4 cm, k = 0.42, t0 = 0.64, tanc = 0.59 and Φ′ = 2.72. Trawl-type selectivity ogive was calculated as 1.57 years corresponding to 17.1 cm TL. The virtual population analysis of M. barbatus indicated that the minimum and maximum fishing mortalities were 0.01 yr–1 and 11.1 yr–1 for the mid-length groups for 8.5 cm and 21.5 cm respectively. The estimated lowest mean biomass and yield were 3.541 t and 31 t at length 8.5, and the highest mean biomass and yield were 13.880 t at length 22.5 cm and 46.086 t at length 21.5 cm respectively. Biological reference points were FMSY = 5.85, F0.5 = 2.3, EMSY = 0.89, E0.5 = 0.77. The values for the current fishing mortality coefficient (Fcur) and the current exploitation rate (Ecur) calculated were 5.3 and 0.89 respectively. The present biological reference points indicate that the stock of M. barbatus in the investigated area is overexploited status and needs urgent management considerations.","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"3 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84037406","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}

引用次数: 1

Bacteria and fungi analyses of fish diets with grasshopper and cockroach meals: the potential replacement of fishmeal in fish diets 以蚱蜢和蟑螂为饲料的鱼饲料的细菌和真菌分析:鱼饲料中鱼粉的潜在替代品

IF 0.7

Journal of Fisheries Pub Date : 2022-07-01 DOI: 10.17017/j.fish.324

K. Adamu, M. Aliyu-Paiko, Yakubu Manbe Mohammed, Taofikat Tinuola Adebola, M. Hafsat, Kate Isioma Iloba

{"title":"Bacteria and fungi analyses of fish diets with grasshopper and cockroach meals: the potential replacement of fishmeal in fish diets","authors":"K. Adamu, M. Aliyu-Paiko, Yakubu Manbe Mohammed, Taofikat Tinuola Adebola, M. Hafsat, Kate Isioma Iloba","doi":"10.17017/j.fish.324","DOIUrl":"https://doi.org/10.17017/j.fish.324","url":null,"abstract":"The need to further ascertain the quality of fishmeal with biological indicators has poised this study to determine the biological characterisation of formulated diets with supplemented insect protein (variegated grasshopper and American cockroach). The diets (A–F) were prepared with local ingredients (A, 100% grasshopper meal; B, 100% fishmeal; C, 1:1 grasshopper:fishmeal; D, 1:1 cockroach:fishmeal; E, 100% cockroach meal; F, commercial diet). Samples of prepared diets ready to be stored for use were subjected to bacteria and fungi test. Diet F recorded the highest (4.60±1.10×102 cfu g–1) total viable bacteria count. The highest (3.00±0.05×102 cfu g–1) fungi count was recorded in diet A. Six probiotics bacteria were isolated from the diets. Lactobacillus delbrueckii subsp. bulgaricus was only isolated in grasshopper containing diets; as Pediococcus pentosaceus, Bifidobacterium longum, Mycobacterium marinum, Bacillus subtilisand, Lactococcocus lactis were only isolated in diets F, E, D, A and B respectively. Two pathogenic bacteria isolated were Streptoccoci pyogenes and Staphylococcus aureus. Aspergillus flavus and Penicillum sp. are the two species of fungi isolated from diet A, and diets C and E respectively. The diets with insect proteins were rich in probiotic bacteria than other diets may be considered to replace fishmeal in fish diet.","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82096921","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}

引用次数: 0

Range extension and re-recording of Redigobius bikolanus (Herre, 1927) from Great Nicobar, India 印度大尼科巴地区红红壤(Redigobius bikolanus, Herre, 1927)的范围扩展和重新记录

IF 0.7

Journal of Fisheries Pub Date : 2022-06-27 DOI: 10.17017/j.fish.424

C. Sreeraj, Arya Sen

引用次数: 0

On the investigation of electroanaesthesia in Labeo rohita under DC and PDC electric field 直流和PDC电场作用下大腹便便电麻醉的研究

IF 0.7

Journal of Fisheries Pub Date : 2022-04-05 DOI: 10.17017/j.fish.359

N. Chakraborty, Aakash De, Sandipkumar Ghosh, T. De

引用次数: 0

Phenotypic characterization, genetic analysis and antibiotic sensitivity of Aeromonas hydrophila isolates causing dropsy in cultured Labeo rohita from Punjab, Pakistan 巴基斯坦旁遮普省培养的罗赫拉贝水肿型嗜水气单胞菌的表型特征、遗传分析和抗生素敏感性

IF 0.7

Journal of Fisheries Pub Date : 2022-03-25 DOI: 10.17017/j.fish.382

F. Sughra, M. Hafeez-ur-Rehman, F. Abbas, I. Altaf, Saira Razzaq, S. Kanwal, M. Inayat, I. Anwer, M. Akram

{"title":"Phenotypic characterization, genetic analysis and antibiotic sensitivity of Aeromonas hydrophila isolates causing dropsy in cultured Labeo rohita from Punjab, Pakistan","authors":"F. Sughra, M. Hafeez-ur-Rehman, F. Abbas, I. Altaf, Saira Razzaq, S. Kanwal, M. Inayat, I. Anwer, M. Akram","doi":"10.17017/j.fish.382","DOIUrl":"https://doi.org/10.17017/j.fish.382","url":null,"abstract":"Motile Aeromonas septicemia (MAS) is a common freshwater fish disease and major threat to the aquaculture in Pakistan. The present study was carried out on suspected fish samples to isolate and characterize local strains of Aeromonas hydrophila, a key pathogen responsible for the said disease in aquacultured fishes. A total of ninety suspected fish specimens were collected from fish farms in Kasur, Okara and Gujranwala districts of Punjab, Pakistan from June 2018 to April 2019. The specimens were processed and A. hydrophila strains were isolated. The primary identification of sixty seven isolates were verified by colony morphology, microscopy and phenotypic characterization with ten biochemical reactions. The A. hydrophila strains of test samples were molecularly characterized by polymerase chain reaction (PCR) using 16S rRNA at desired size of 356bp. The PCR amplified product was subjected to DNA sequencing and phylogenetic analysis showed homology with related strains of Aeromonas spp. By antibiotic sensitivity test, the isolates were checked for nine antibiotics in which the pathogen was sensitive to four and resistant to five drugs. Results of genetic analysis confirmed strains as A. hydrophila which are useful to take preventive measures against the said disease.","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"3 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81358259","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}

引用次数: 1

Evaluation of the reproductive cycle and gonadal development in the climbing perch, Anabas testudineus (Bloch, 1792) in captivity 圈养条件下攀鲈(Anabas testudineus, Bloch, 1792)生殖周期和性腺发育的评价

IF 0.7

Journal of Fisheries Pub Date : 2022-03-24 DOI: 10.17017/j.fish.364

C. V. Priyatha, K. Chitra

{"title":"Evaluation of the reproductive cycle and gonadal development in the climbing perch, Anabas testudineus (Bloch, 1792) in captivity","authors":"C. V. Priyatha, K. Chitra","doi":"10.17017/j.fish.364","DOIUrl":"https://doi.org/10.17017/j.fish.364","url":null,"abstract":"The climbing perch Anabas testudineus, the most demanded indigenous fish species of India, were used for the evaluation of reproductive strategy and gonadal development at first maturation under the controlled laboratory condition. In both sexes, four distinct gonadal developmental stages namely preparatory, pre-spawning, spawning, and post-spawning were identified based on the gonadosomatic index (GSI), hepatosomatic index (HSI), gonadal morphology, and the levels of serum sex hormones. The spawning stage was identified from July and August and the fecundity ranged from 6500–11000 eggs. The GSI exhibited a significant increase from preparatory to pre-spawning and spawning stages, and maintained high until August. The HSI was maintained the same during preparatory, pre-spawning, and spawning stages while increased in post-spawning stage in both sexes. Serum estrogen and testosterone levels increased significantly during pre-spawning, and spawning stages in both sexes. Fecundity showed a positive correlation with the length, weight, and ovary weight. Histological sections showed that male A. testudineus were group-synchronous spawners. Both sexes showed discrete reproductive cycles characterized by distinct changes in gonadal size, sex hormones and gonadal indices. This study will bridge the gap of insufficient knowledge to support the best practices suitable for the A. testudineus culture and survival under captivity.","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"32 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87679745","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}

引用次数: 1

Some aspects of the reproductive biology of Labeo victorianus (Boulenger, 1901) from Kuja-Migori River basin, Kenya 来自肯尼亚Kuja-Migori河流域的Labeo victorianus (Boulenger, 1901)生殖生物学的一些方面

IF 0.7

Journal of Fisheries Pub Date : 2022-03-19 DOI: 10.17017/j.fish.345

E. Kembenya, A. Getabu, J. Njiru, R. Omondi

{"title":"Some aspects of the reproductive biology of Labeo victorianus (Boulenger, 1901) from Kuja-Migori River basin, Kenya","authors":"E. Kembenya, A. Getabu, J. Njiru, R. Omondi","doi":"10.17017/j.fish.345","DOIUrl":"https://doi.org/10.17017/j.fish.345","url":null,"abstract":"Labeo victorianus is an endemic species to Lake Victoria basin and also a species threatened with extinction status. This study investigated reproductive biology of L. victorianus from Kuja- Migori River basin, Kenya with a view to determining the length weight relationship (LWR), condition factor, fecundity, egg diameter gonado-somatic index (GSI), length at 50% maturity (LM50) and sex ratio. Sampling was done by electrofishing from January 2018 to June 2019. The LWR showed a negative allometric pattern (p < 0.05). The mean condition factor for combined sexes was 1.02. Fecundity ranged from 47842 – 101902 eggs (mean ± SD: 83663 ± 2605 eggs) and correlated highly with body size (r2 = 0.9137). Egg diameter ranged from 0.5 – 0.7 mm. Mean GSI was 6.3 ± 1.6 and 2.8 ± 0.45 for females and males respectively. The LM50 was estimated at 18 cm total length (TL) and 20 cm TL for males and females respectively. Sex ratio did not differ from the expected 1:1. This species has a high fecundity with small sized eggs and males attain sexual maturity earlier than females. The findings of this study provide useful information towards sustainable conservation of L. victorianus in the Lake Victoria basin.","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"17 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78332497","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}

引用次数: 1

Pathology of systemic multiple bacterial infections and peritonitis in hatchery-produced African catfish Clarias gariepinus (Burchell, 1822) larvae 孵化场生产的非洲鲶鱼Clarias gariepinus (Burchell, 1822)幼虫的系统性多种细菌感染和腹膜炎的病理研究

IF 0.7

Journal of Fisheries Pub Date : 2022-02-20 DOI: 10.17017/j.fish.300

T. Abraham, Harresh Adikesavalu, Sayani Banerjee

{"title":"Pathology of systemic multiple bacterial infections and peritonitis in hatchery-produced African catfish Clarias gariepinus (Burchell, 1822) larvae","authors":"T. Abraham, Harresh Adikesavalu, Sayani Banerjee","doi":"10.17017/j.fish.300","DOIUrl":"https://doi.org/10.17017/j.fish.300","url":null,"abstract":"Diseases are the major problems that have a significant impact on African catfish Clarias gariepinus seed production. This study reports the necropsy, microscopy, bacteriology and histopathology of diseased catfish larvae that experienced mass mortalities (>80%). The gill filaments of diseased larvae revealed no ectoparasites. The intestines had no parasitic association. About 35 – 40% of the dead larvae had ruptured abdomen. The affected larvae had abdominal haemorrhages and disintegrated intestine with marked degenerative and inflammatory changes, which indicated peritonitis. Bacteria including Aeromonas veronii, Edwardsiella tarda and Pseudomonas putida were isolated from the haemorrhagic exudates of diseased catfish larvae. Histopathology demonstrated dense melanomacrophage aggregates in the spleen. The intestine had extensive degeneration, basophilic margination and disintegration of the mucosal layer. The kidney section suggested a suppurative infection with necrosis of haematopoietic tissue, inflammation of the epithelial tissue, vacuolar degenerations and hypoplastic haematopoietic tissue. Aeromonas veronii and E. tarda immersion challenge at 5×106 cells mL–1 yielded no mortalities under laboratory conditions. Nevertheless, the hatchery management measures and the laboratory analyses supported peritonitis with systemic multiple bacterial infections in the observed large-scale motilities of excessively fed larvae.","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"12 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72867391","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}

引用次数: 0

Feasibility of using sailfin catfish meal as an alternative to commercial fishmeal in the diets of juvenile guppy (Poecilia reticulata) 在孔雀鱼幼鱼饲料中使用帆鳍鲶鱼粉替代商品鱼粉的可行性

IF 0.7

Journal of Fisheries Pub Date : 2022-01-30 DOI: 10.17017/j.fish.344

Raneesha De Fonseka, K. Radampola

{"title":"Feasibility of using sailfin catfish meal as an alternative to commercial fishmeal in the diets of juvenile guppy (Poecilia reticulata)","authors":"Raneesha De Fonseka, K. Radampola","doi":"10.17017/j.fish.344","DOIUrl":"https://doi.org/10.17017/j.fish.344","url":null,"abstract":"A six weeks feeding trial was conducted to elucidate the effect of fishmeal produced from sailfin catfish (SCM) by replacing imported commercial fishmeal (FM) in the diet of Poecilia reticulata to reduce the cost of feed. Twenty one days old guppy fry (1.99±0.09 cm; 0.07±0.02 g) were fed four diets using different levels of SCM; control diet (CD; 0% SCM), 10SCM (10% SCM), 20SCM (20% SCM) and 30SCM (30% SCM). SCM contained higher protein content (69.5%) compared to FM (61%). Final body weight, %ADG, %SGR or FCR (1.77±0.16 – 2.21±0.26) and food consumption (9.3±0.1 – 9.45±0.5) did not influence by inclusion of SCM. Survival (>80%) did not influence by the type and quantity of fishmeal inclusion. Moreover, significantly higher profit index for 30SCM (8.94±1.43) and 20SCM (7.88±4.23) was recorded than CD (5.17±4.43) which contained imported, expensive FM. Overall, the present study revealed that commercial fishmeal can be fully replaced by SCM in the diets of juvenile guppy without any adverse effects on their growth. Therefore, producing fishmeal using sailfin catfish, which is an invasive species in reservoirs in Sri Lanka and an underutilized source, will be a feasible method to overcome the invasive problem.","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86621441","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}

引用次数: 1

Length-weight relationship, growth pattern and condition factor of four indigenous cypriniform Schizothorax species from Vishav Stream of Kashmir Himalaya, India 印度喀什米尔-喜马拉雅地区Vishav溪四种鲤形裂胸鱼的长重关系、生长模式及条件因子

IF 0.7

Journal of Fisheries Pub Date : 2022-01-28 DOI: 10.17017/j.fish.337

M. Y. Arafat, Yahya Bakhtiyar

{"title":"Length-weight relationship, growth pattern and condition factor of four indigenous cypriniform Schizothorax species from Vishav Stream of Kashmir Himalaya, India","authors":"M. Y. Arafat, Yahya Bakhtiyar","doi":"10.17017/j.fish.337","DOIUrl":"https://doi.org/10.17017/j.fish.337","url":null,"abstract":"The indigenous Schizothorax spp. in the valley of Kashmir are facing constant threats and decline in their overall population. The current aim was to analyse the comparative length-weight relationship (LWRs) and condition factor (K) of 350 specimens belonging to four Schizothorax spp. (S. plagiostomus, S. esocinus, S. labiatus and S. curvifrons) from the Vishav Stream of Kashmir Himalaya, India. The fish specimens were sampled for a period of one year from April 2018 to March 2019. The results revealed that the growth coefficient ‘b’ in all the four Schizothorax spp. was found very close to 3, indicating an isometric growth pattern. No significant difference in the ‘b’ values of four Schizothorax spp. was found when compared with the isometric value (t-test: p > 0.05). The mean value of the ‘K’ for S. plagiostomus, S. esocinus, S. curvifrons and for S. labiatus were 0.81 ± 0.07, 0.80 ± 0.08, 0.85 ± 0.08 and 0.88 ± 0.12 respectively. The mean condition factor did not vary across four species (ANOVA: p > 0.05). The present findings could serve as baseline information for the management, stock assessment and future studies of indigenous capture fishery resources of the Vishav Stream and other similar habitats.","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"13 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76222361","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}

引用次数: 2