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Fishery, population characteristics and stock status of the bigeye thresher Alopias superciliosus Lowe, 1841 off Thoothukudi, south-east coast of India 印度东南海岸Thoothukudi外1841年大眼长尾鲨的渔业、种群特征和种群状况
IF 0.5 4区 农林科学 Q4 Agricultural and Biological Sciences Pub Date : 2021-12-31 DOI: 10.21077/ijf.2021.68.4.108637-02
P. Manojkumar, Ranjith L, K. Karuppasamy, K. Kanthan
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引用次数: 0
Understanding the trade-offs in tropical reservoir fishery in a socio-ecological perspective 从社会生态学的角度理解热带水库渔业的权衡
IF 0.5 4区 农林科学 Q4 Agricultural and Biological Sciences Pub Date : 2021-12-31 DOI: 10.21077/ijf.2021.68.4.107880-13
T. T. Paul, S. Manoharan, S. Salim, K. R. Sreenath, U. Sarkar, A. Landge, B. K. Das
A study involving the assessment of ichthyo-diversity, physico-chemical aspects of reservoir, socio-economics of the reservoir fishers and their sustainability issues was conducted in Peechi Reservoir, in Thrissur District, Kerala, India during 2016-2018. The study indicated the need for developing appropriate reservoir based fishery management measures in protected ecosystems considering the intricate trade-offs between conservation strategies leading to ensuring livelihoods for the resource poor fishers. Fish and water samples collected were analysed on various scales. The study indicated that Salmostoma novacula was the major species contributing to the diversity in terms of abundance in the reservoir. The diversity, species evenness (0.92 to 0.95) and species richness index (1.73 to 2.39) were observed to be higher at the sampling site ‘Intermediate 1’. Canonical correspondence analysis (CCA) indicated that diversity was positively associated with dissolved oxygen (0.58), pH (0.62) and hardness (0.66) and negatively correlated with conductivity (-0.60). Socio-economics of the reservoir fishers identified very low monthly relative contribution of the species to the fishers’ income of the reservoir, which calls for better management measures of the reservoir with respect to supporting the livelihood and sustainable management. Based on fishers’ perception on fisheries management, an index called reservoir fisheries management index (RFMI) was introduced, which indicated that management of technical drivers will ensure better fisheries in Peechi Reservoir. The study identified that technological interventions like enclosure-based culture system using indigenous fishes of the reservoir such as Etroplus suratensis , hatchery operations and tourism during the lean period to support the livelihood of the fishers are critically needed. Thus, a participatory mode of culture supported sustainable conservative management may be incorporated in this reservoir. This is the first study of its kind in reservoir based aquatic system.
2016-2018年,在印度喀拉拉邦Thrissur区的Peechi水库进行了一项研究,涉及鱼类多样性、水库物理化学方面、水库渔民的社会经济及其可持续性问题的评估。该研究表明,考虑到保护战略之间的复杂权衡,有必要在受保护的生态系统中制定适当的基于水库的渔业管理措施,以确保资源匮乏的渔民的生计。对收集的鱼类和水样本进行了不同规模的分析。研究表明,就丰度而言,新冠萨尔莫斯托马是造成水库多样性的主要物种。“中间1”采样点的多样性、物种均匀度(0.92至0.95)和物种丰富度指数(1.73至2.39)较高。典型对应分析(CCA)表明,多样性与溶解氧(0.58)、pH(0.62)和硬度(0.66)呈正相关,与电导率(-0.60)呈负相关。水库渔民的社会经济状况表明,该物种对水库渔民收入的月相对贡献非常低,这就要求在支持生计和可持续管理方面对水库采取更好的管理措施。根据渔民对渔业管理的看法,引入了一项名为水库渔业管理指数(RFMI)的指数,该指数表明,技术驱动因素的管理将确保皮奇水库的渔业更好。该研究确定,迫切需要技术干预措施,如利用水库中的本地鱼类(如苏拉氏Etroplus suratensis)的围栏养殖系统、孵化场运营和贫困时期的旅游业,以支持渔民的生计。因此,文化支持的可持续保守管理的参与模式可能会被纳入这一水库。这是首次在基于水库的水生系统中进行此类研究。
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引用次数: 0
A blend of plant proteins as a potential fishmeal substitute in the diet of Asian seabass Lates calcarifer (Bloch-1790): Effect on growth, digestive enzymes and fatty acid composition 亚洲鲈鱼(Bloch-1790)日粮中潜在鱼粉替代品的植物蛋白混合物:对生长、消化酶和脂肪酸组成的影响
IF 0.5 4区 农林科学 Q4 Agricultural and Biological Sciences Pub Date : 2021-12-31 DOI: 10.21077/ijf.2021.68.4.108000-08
E. P. Madhubabu, Dr Jannathulla R, H. I. Khan, K. Ambasankar, J. S. Dayal
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引用次数: 0
Apparent digestibility of dried azolla powder incorporated diets in rohu Labeo rohita (Hamilton, 1822) 干杜鹃花粉混合饲料在罗赫拉比奥罗赫塔的表观消化率(Hamilton, 1822)
IF 0.5 4区 农林科学 Q4 Agricultural and Biological Sciences Pub Date : 2021-12-31 DOI: 10.21077/ijf.2021.68.4.112816-18
B. Gangadhar, H. Umalatha, K. Hemaprasanth
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引用次数: 2
Evaluation of haemato-biochemical changes, oxidative stress response and stress related gene expressions in juvenile Labeo rohita (Hamilton, 1822) in response to Mycobacterium fortuitum infection 对偶然分枝杆菌感染后幼年罗氏Labeo(Hamilton,1822)血液生化变化、氧化应激反应和应激相关基因表达的评估
IF 0.5 4区 农林科学 Q4 Agricultural and Biological Sciences Pub Date : 2021-12-31 DOI: 10.21077/ijf.2021.68.4.111467-11
P. Das, T. Saha, T. Sengupta
Non-tuberculous mycobacteria present in aquaculture systems can infect and influence the physio-chemical blood parameters of captive fish. The aim of this study was to examine the changes in haematological and biochemical parameters along with expression of stress related genes in response to Mycobacterium fortuitum infection in the Indian major carp, rohu Labeo rohita (Hamilton, 1822). Juveniles of L. rohita were experimentally infected with M. fortuitum strain ATCC 6841, by immersion challenge at three different dosages of 5x105 cfu fish-1 (group T2), 5x10 6 cfu fish-1 (group T3) and 5x107 cfu fish-1 (group T4) along with a control group. After 60 days post-infection, fishes in groups T2, T3 and T4 were observed with necrotic lesions in skin and M. fortuitum was recovered from moribund fishes. Heat shock protein (hsp) gene expression analysis was performed in liver tissues by RT-PCR and hsps were analysed by Western Blotting in fishes of all treatment groups and control. Significant changes (p<0.05) were found in haemato-biochemical parameters including glucose, cortisol, blood parameters, liver enzymes, serum proteins and catalase and superoxidase dismutase activity along with mRNA expression of hsp genes viz, hsp60, hsp70, hsp78, hsp90 and hsp47 within groups T3 and T4 in comparison to control. The results suggest the pathogenicity of M. fortuitum (ATCC 6841) to L. rohita by promoting stress parameters and the transcription level of stress related genes.
养殖系统中存在的非结核分枝杆菌可感染和影响圈养鱼的理化血液参数。本研究的目的是研究印度主要鲤鱼rohu Labeo rohita (Hamilton, 1822)对福氏分枝杆菌感染的血液学和生化参数的变化以及应激相关基因的表达。采用5 × 105 cfu鱼-1 (T2组)、5 × 10 × 6 cfu鱼-1 (T3组)和5 × 107 cfu鱼-1 (T4组)3种不同剂量的浸渍法侵染罗氏乳杆菌(L. rohita)幼鱼,并与对照组进行实验。感染后60 d,观察T2、T3、T4组鱼皮肤出现坏死病变,并在死鱼身上发现福氏分枝杆菌。采用RT-PCR分析各处理组和对照组鱼肝组织热休克蛋白(hsp)基因表达,Western Blotting分析热休克蛋白表达。T3和T4组的血糖、皮质醇、血液指标、肝酶、血清蛋白、过氧化氢酶和超氧化酶歧化酶活性以及hsp基因(hsp60、hsp70、hsp78、hsp90和hsp47) mRNA表达量与对照组相比均有显著变化(p<0.05)。结果表明,福氏霉(ATCC 6841)通过提高胁迫参数和胁迫相关基因的转录水平对罗氏杆菌具有致病性。
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引用次数: 0
Protective efficacy of recombinant wsv477 protein against white spot syndrome virus infection in the tiger shrimp Penaeus monodon 重组wsv477蛋白对斑对虾白斑综合征病毒感染的保护作用
IF 0.5 4区 农林科学 Q4 Agricultural and Biological Sciences Pub Date : 2021-12-31 DOI: 10.21077/ijf.2021.68.4.82276-09
T. G. Puneeth, D. Akhila, M. Dechamma, K. S. Santhosh, M. N. Venugopal, S. K. Girisha
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引用次数: 1
Seasonal variations in cholesterol content of the Indian squid Uroteuthis (Photololigo) duvaucelii (d'Orbigny [in Ferussac and d'Orbigny], 1835 印度鱿鱼Uroteuthis(Photololigo)duvauceli(d'Orbigny[在Ferussac和d'Or比格尼],1835)胆固醇含量的季节变化
IF 0.5 4区 农林科学 Q4 Agricultural and Biological Sciences Pub Date : 2021-09-30 DOI: 10.21077/ijf.2021.68.3.88354-13
H. Maqbool, S. Patange, M. Azhar, J. M. Koli, Makrand Trymbak Sharangdhar
Among seafood, shellfish and specifically cephalopods are known to contain higher levels of cholesterol. The correlation of dietary cholesterol with heart ailments has led people to become more health conscious and in this scenario the present study was carried out to investigate the monthly variations in Indian squid to aid in better decision making by consumers. Squid samples [Uroteuthis (Photololigo) duvaucelii] were collected in quadruplicate on monthly basis for the period of one year (2015-2016) and subjected to analysis for cholesterol, non-saponifiable matter (NSM) and proximate composition. The cholesterol content of squid was highest (279 mg%) and lowest (7.3 mg%) during the months of April and December with respect to total length and size, respectively. A monthly variation in proximate composition of squid with respect to the total length and size was observed. No correlation observed between fat content and cholesterol in squid. Significant difference in cholesterol content was observed monthly in the squid samples. NSM content (0.23%) was negligible and undetectable in the samples. Keywords: Healthy diet, Heart disease, Proximate composition, Seafood
在海鲜中,贝类,特别是头足类动物的胆固醇含量较高。饮食胆固醇与心脏病的相关性使人们变得更加注重健康,在这种情况下,本研究旨在调查印度鱿鱼的月度变化,以帮助消费者更好地做出决策。鱿鱼样品[Uroteuthis(Photololigo)duvauceli]在一年内(2015-2016年)每月收集四份,并进行胆固醇、非皂化物质(NSM)和近似成分分析。就总长度和大小而言,鱿鱼的胆固醇含量在4月和12月分别最高(279mg%)和最低(7.3mg%)。观察到鱿鱼的近似成分随总长度和大小的每月变化。鱿鱼中的脂肪含量和胆固醇之间没有相关性。每月在鱿鱼样本中观察到胆固醇含量的显著差异。NSM含量(0.23%)可忽略不计,在样品中检测不到。关键词:健康饮食,心脏病,近似成分,海鲜
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引用次数: 0
Effect of formalin preservation on studies on morphology and condition factor of the freshwater shark Wallago attu (Bloch and Schneider, 1801) using truss network system 福尔马林保存对特拉斯网络系统研究淡水鲨鱼Wallago attu(Bloch and Schneider,1801)形态和条件因子的影响
IF 0.5 4区 农林科学 Q4 Agricultural and Biological Sciences Pub Date : 2021-09-30 DOI: 10.21077/ijf.2021.68.3.98695-16
G. Kumar, F. Bano, M. Serajuddin
The study was aimed to evaluate the effect of formalin preservatiion on the shape, size and condition factor of the freshwater silurid catfish Wallago attu (Bloch and Schneider, 1801) using length-weight relationship (LWR), condition factor and truss analysis. A total of 50 specimens of the fish were procured from the river Ganga at Kanpur region. The fresh and formalin preserved fish were measured for total length, standard length and body weight. Results of LWR revealed that the fresh and preserved fish followed different growth pattern and cube law. High values of r2 were obtained for the relationship between length and weight of the fish before and after preservation of the fish in formalin. Decrease in length and an increase in weight was observed in the preserved specimens of the fish due to the effect of formalin but were not statistically significant. The mean condition factor (K) showed significant (p<0.05) change in the fish after preservation. The univariate and multivariate analysis of truss measurements, two partially overlapping different convex hulls of the scatter plot of PC1 on PC2 and canonical discriminant functions showed highly significant morphometric heterogeneity between the specimens of fresh and preserved fish. The results of the present study suggest that fresh specimens of the fish should be used in research studies based on weight and linear body measurements of the fish. Keywords: Condition Factor, Formalin, Length-weight relationship, Truss network system
本研究旨在通过长宽关系(LWR)、条件因子和特拉斯分析,评价福尔马林保存对Wallago attu(Bloch and Schneider,1801)淡水甲叉鱼的形状、大小和条件因子的影响。共有50个鱼类标本是从坎普尔地区的恒河中采集的。测量新鲜和福尔马林保存的鱼的总长度、标准长度和体重。LWR结果表明,鲜鱼和腊鱼生长规律不同,呈立方体分布。在福尔马林中保存鱼之前和之后,获得了鱼的长度和重量之间的关系的高r2值。由于福尔马林的作用,在保存的鱼类标本中观察到长度减少和重量增加,但没有统计学意义。保存后,平均条件因子(K)变化显著(p<0.05)。特拉斯测量的单变量和多变量分析、PC1在PC2上的散点图的两个部分重叠的不同凸包和规范判别函数显示,新鲜鱼类和保存鱼类标本之间存在高度显著的形态计量异质性。本研究的结果表明,在基于鱼类重量和线性身体测量的研究中,应使用鱼类的新鲜标本。关键词:条件因子,形式素,长宽关系,特拉斯网络系统
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引用次数: 0
Labour Mobility In Marine Fisheries Sector: A Case Study From Odisha State, Eastern India 海洋渔业部门的劳动力流动:来自印度东部奥里萨邦的案例研究
IF 0.5 4区 农林科学 Q4 Agricultural and Biological Sciences Pub Date : 2021-09-30 DOI: 10.21077/ijf.2021.68.3.88395-15
S. Raju, S. Salim, P. Pattnaik, A. Shinu
This paper presents an insight into the mobility of the marine fishers of Pentakota area of Puri District of Odisha, migrated from various parts of Andhra Pradesh in search of sustainable livelihood and better socio-economic conditions. The study relied on primary data collected from 147 migrant fishermen households selected through random sampling method. The study attempts to examine the pros and cons of labour mobility in the marine fisheries sector. Analysis on the socio-economic profile of the migrant fishers revealed that 64% of migrant populations are in the age group 31-50 years and most of them belong to Christian and Hindu religions and 87% of them are from other backward castes (OBC). The prime reasons for migration included low income, debts and financial commitments and disguised unemployment. The analysis indicated that consequent to migration, the fishers augmented their income besides increased savings, construction of house and possession of personal assets along with an elevation to their social status. The expenditure pattern of the migrants including clothing, shelter, food and education of dependents were also analysed. The major problems confronted during migration are language barrier, cultural lag and conflicts with established migrant labourers. Even though the labour mobility has contributed much to the marine fishery economy of the region, the ecological and social changes might impact occasional conflict between the migrants and native fishers for the scarce marine fishery resources. Hence, sufficient steps have to be taken for skill development and improvement of socio-economic conditions of the migrant fishers as well as for better management of conflicts among fishers. Keywords: Andhra Pradesh, Labour, Marine Fisheries, Migration, Odisha
本文介绍了奥里萨邦普里区Pentakota地区海洋渔民的流动性,他们从安得拉邦的各个地区迁移到这里,寻求可持续的生计和更好的社会经济条件。本研究采用随机抽样的方法,对147户流动渔民家庭进行了初步数据收集。这项研究试图审查海洋渔业部门劳动力流动的利弊。对流动渔民社会经济状况的分析显示,64%的流动人口年龄在31-50岁之间,其中大多数属于基督教和印度教,87%来自其他落后种姓(OBC)。移民的主要原因包括低收入、债务和财政负担以及变相失业。分析表明,由于迁移,渔民除了增加储蓄、建造房屋和拥有个人资产外,还增加了收入,并提高了他们的社会地位。分析了流动人口的消费模式,包括衣食住行和受赡养人的教育。移民过程中面临的主要问题是语言障碍、文化滞后和与外来务工人员的冲突。尽管劳动力流动对该地区的海洋渔业经济做出了很大贡献,但生态和社会变化可能会影响移民与当地渔民之间因稀缺的海洋渔业资源而发生的偶尔冲突。因此,必须采取充分步骤发展移徙渔民的技能和改善其社会经济条件,并更好地管理渔民之间的冲突。关键词:安得拉邦,劳工,海洋渔业,移民,奥里萨邦
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引用次数: 0
Quality evaluation of fish protein soluble (FPS) injected seabass (Lates calcarifer) fillets through texture profile analysis during chilled storage 应用质地剖面分析法评价注射鱼蛋白(FPS)鲈鱼(Lates calcarifer)鱼片在冷藏过程中的质量
IF 0.5 4区 农林科学 Q4 Agricultural and Biological Sciences Pub Date : 2021-09-30 DOI: 10.21077/ijf.2021.68.3.103195-14
T. Ghorai, K. C. Dora
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引用次数: 1
期刊
Indian Journal of Fisheries
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