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Length-Weight Relationships and Condition Factor of Twenty-Four Freshwater Fish Species from Lake Buyo, Côte D’Ivoire 布约湖24种淡水鱼的长度-重量关系和条件因子Côte科特迪瓦
Pub Date : 2019-12-15 DOI: 10.3923/jfas.2020.27.34
K YaoAristide, Olga Rosemonde, M. Bamba, Attoubé Ida Monney, T. Koné
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引用次数: 2
Carbonate Chemistry and Structure of Macro-invertebrate Communities in Relation to Organic Pollution in the Coastal Atlantic Ocean at Kribi (Cameroon) 喀麦隆克里比大西洋沿岸与有机污染有关的大型无脊椎动物群落碳酸盐化学和结构
Pub Date : 2019-12-15 DOI: 10.3923/jfas.2020.12.21
Onana Fils Mamer, Bilounga Ulrich Joe, N NyamsiTchatcho, K. Ernest, Tchakonte Simé, Tamsa Antoine Ar, Mfoula Nkolo Fred, Ntyam Ondo Sylvi, Zebaze Togouet Se
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引用次数: 2
Effect of Different Levels of Saponin on Growth Performance and Food Efficiency in Convict Cichlid (Amatitlania nigrofasciata) 不同水平皂苷对黑斑慈鲷生长性能和摄食效率的影响
Pub Date : 2019-12-15 DOI: 10.3923/jfas.2020.22.26
R. DavoudMohammad
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引用次数: 2
A Preliminary Technique for the Isolation and Culture of Brown Trout (Salmo trutta macrostigma, Dumeril, 1858) Spermatogonial Stem Cell 褐鳟(Salmo trutta macrostigma, Dumeril, 1858)精原干细胞分离培养的初步技术
Pub Date : 2019-11-12 DOI: 10.30564/jfsr.v1i2.1354
Şehriban Çek–Yalniz, K. Yaraş
This study was aimed to find a practical technique for isolation and culture spermatogonial stem cells from male brown trout (Salmo trutta macrostigma). Twelve wild juvenile male were obtained from Kılıç Trout Fish Farm (Kahramanmaraş, Turkey). The juveniles were taken alive to the aquaria unit and stored in a 1000-liter capacity fiberglass tank.  In order to identify the best size, age and testis structure of S.t. macrostigma for spermatogonial stem cell isolation and culture. Morphological and histological testis conditions were assessed. Fish were anesthetized with 0.04% 2-phenoxethanol. The surface of the fish was sterilized with 70% ethanol. Twelve fish were divided into two groups for enzyme digestion, and each group was divided into two replicates (three fish per replicate). Testis tissue of group one were digested by 0.25% trypsin- EDTA, and testis tissues of group two were digested by 0.05% trypsin-EDTA. At the end of the trial, first, the best age, size and weight of the male fish for spermatogonial stem cell isolation and culture were identified as 5+ month old, 12.13±1.5 cm, 19, 25±7.05 g respectively. Then, the highest spermatogonial stem cells were measured in the stage one and two of the testes. Finally, isolation and culture conditions were optimized for male S.t. macrostigma. Spermatogonial stem cell isolation and culture techniques were defined for fish in order to be used in surrogate reproduction technologies and gene transfer systems.
本研究旨在寻找一种从雄性褐鳟(Salmo trutta macrostigma)中分离和培养精原干细胞的实用技术。从Kılıç鳟鱼养殖场(kahramanmaraku,土耳其)获得12条野生雄性幼鱼。这些幼鱼被活着带到水族馆,储存在一个容量为1000升的玻璃纤维水箱中。为了确定大柱头柱头的最佳大小、年龄和睾丸结构,用于精原干细胞的分离和培养。评估睾丸的形态和组织学状况。鱼被0.04%的2-苯氧乙醇麻醉。鱼的表面用70%的乙醇消毒。将12尾鱼分为2组进行酶消化,每组分为2个重复,每个重复3尾鱼。第一组睾丸组织用0.25%的胰蛋白酶-EDTA消化,第二组睾丸组织用0.05%的胰蛋白酶-EDTA消化。试验结束时,首先确定5+月龄、12.13±1.5 cm、19、25±7.05 g为精原干细胞分离培养雄鱼的最佳年龄、体型和体重。然后,在第一阶段和第二阶段的睾丸中测量最高的精原干细胞。最后,对雄性巨柱头的分离培养条件进行了优化。精原干细胞分离和培养技术被定义为用于鱼类的代生殖技术和基因转移系统。
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引用次数: 0
Marketing Program Implementation of Greek Fisheries Firms 希腊渔业公司营销计划的实施
Pub Date : 2019-10-31 DOI: 10.30564/jfsr.v1i2.1108
Eleni Kaimakoudi, Christina Sepetzoglou
This study analyses the marketing program implementation in Greek fisheries firms. In this perspective, quantitative research with personal interviews to fisheries firms’ executives is elaborated. Data were analyzed elaborating cluster and discriminant analysis. Findings reveal that there are two distinct groups of Greek fisheries firms regarding their decisions about the components of marketing mix. The results demonstrate that there are differences among the two groups mainly in terms of price and distribution policies. Particularly, 62.6% of sample firms seem to dispose a differential marketing mix, while 37.4% of sample firms seem to dispose a non-differential marketing mix. Notably, both clusters are not aware of quality and sustainability assurance certifications regarding seafood products. From this perspective, there is a potential for a better organized marketing program implementation aiming to respond efficiently in modern market needs.
本研究分析希腊渔业企业行销计划的执行情况。从这个角度来看,定量研究与个人访谈渔业公司的高管进行了阐述。对数据进行聚类分析和判别分析。调查结果显示,有两个不同的群体希腊渔业公司关于他们的决定营销组合的组成部分。结果表明,两组之间的差异主要体现在价格和分配政策方面。特别是,62.6%的样本公司似乎处理差异营销组合,而37.4%的样本公司似乎处理非差异营销组合。值得注意的是,这两个集群都没有意识到关于海鲜产品的质量和可持续性保证认证。从这个角度来看,有一个更好的组织营销计划实施的潜力,旨在有效地响应现代市场需求。
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引用次数: 0
Growth Pattern and Morphological Variation of Labeo calbasu Found in Indus River, Sindh-Pakistan 巴基斯坦信德省印度河流域拉贝的生长模式和形态变异
Pub Date : 2019-10-31 DOI: 10.30564/jfsr.v1i2.1232
S. Malik, A. H. Qadri, M. Y. Laghari, P. Lashari, A. Khuharo, N. T. Narejo
The present work reports the length–weight relationships (LWR) and condition factor relationships for Labeo calbasu collected from Upstream (Matyari) Kotri barrage at, River Indus, Pakistan, because stock assessment helps the fisheries managers to conserve the commercially important fish. Morphological characters of fish as well as Length-weight relationship are an important tool for fishery management. The results of LWR (W= aLb), for L calbasu.  Representing negative allometric growth pattern. LWRs and condition factor relationships were found significantly correlated. A total of 200 and 190 specimens from upstream and downstream were collected, respectively. The assessed values of length-weight correlation and condition factor were calculated as Kn=39.663 (LeCren), and K=11.915 (Fulton) for upstream and Kn=44.066 and K=13.872 for downstream. Length-weight was found with a strong correlation of n= 2.892, a=0.0235 with r2=0.934 for upstream population then the downstream population.  The results of this work would be beneficial for sustainable management as well as fishery managers.  
本研究报告了从巴基斯坦印度河上游(Matyari) Kotri拦河坝收集的Labeo calbasu的长度-重量关系(LWR)和条件因子关系,因为种群评估有助于渔业管理者保护重要的商业鱼类。鱼类的形态特征和长重关系是渔业管理的重要工具。LWR (W= aLb)的结果。代表负异速生长模式。lwr与病情因子关系呈显著相关。在上游和下游分别采集标本200件和190件。上游的长度-权重相关性和条件因子的评估值分别为Kn=39.663 (LeCren)、K=11.915 (Fulton),下游的Kn=44.066、K=13.872。上游种群与下游种群的长-重相关性为n= 2.892, a=0.0235, r2=0.934。这项工作的结果将有利于可持续管理和渔业管理人员。
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引用次数: 3
Life Stage, Gender and Movement of Blue Crabs (Callinectis sapidus) in Lake Mattamuskeet and Connecting Canals 马塔玛斯基特湖和运河连接区蓝蟹的生命阶段、性别和运动
Pub Date : 2019-10-31 DOI: 10.30564/jfsr.v1i2.1095
Julia Chen Rinaldi, James L. Hench, M. Darnell, Matthew A. Kukurugya, D. Rittschof
In their ranges on east and south coasts of the Americas as well as their established invasions in the Adriatic and Baltic, blue crabs, Callinectis sapidus, inhabit estuaries, sounds and coastal oceans and are commercially and ecologically important. How crabs move in response to physical variables is important to management. We monitored life stages at canal control structures, assessed gender ratios with recreational crabbing, learned from crabbers, and studied movements of tagged crabs in a canal connecting Lake Mattamuskeet to the Pamlico sound.  Juveniles enter the lake  through two of 4 canals connecting to the sounds.  Females migrate out through one canal. The lake standing population is about 70% male.  Movements of 240 crabs in August 2012 and 102 crabs in October 2014 were quantified using RFID tags with co-located meteorological and oceanographic devices. Non-spawning females and males are nomadic.  Crabs released in the canal move in response to changes in water depth and go with the flow, toward the Pamlico Sound (summer 76% and fall 78%). What crabbers describe as a fall migration  appears to be concentration of crabs in warmer deeper canals and then southern movement with flow generated by strong north winds. To be effective, management strategies like migratory corridors require understanding of crab movements.
在美洲东部和南部海岸以及亚得里亚海和波罗的海的入侵范围内,蓝蟹,Callinectis sapidus,栖息在河口,声音和沿海海洋中,具有重要的商业和生态意义。螃蟹如何根据物理变量移动对管理很重要。我们监测了运河控制结构的生命阶段,通过休闲捕蟹来评估性别比例,向捕蟹者学习,并研究了连接Mattamuskeet湖和Pamlico声音的运河中标记螃蟹的运动。幼鱼通过与声音相连的四条运河中的两条进入湖中。雌性通过一条通道迁徙出去。湖中常住人口约70%为雄性。2012年8月240只螃蟹和2014年10月102只螃蟹的移动情况采用射频识别标签和气象和海洋设备进行量化。不产卵的雌性和雄性都是游牧动物。在运河里释放的螃蟹会随着水深的变化而移动,并随着水流流向帕姆利科海湾(夏季76%,秋季78%)。捕蟹者所描述的秋季迁徙似乎是螃蟹集中在温暖的深层运河中,然后随着强劲的北风产生的气流向南移动。为了有效,像迁徙走廊这样的管理策略需要了解螃蟹的运动。
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引用次数: 0
Seaweed biodiversity and temperature fluctuations of Calatagan bay, Verde Island passage 佛得岛航道卡拉塔甘湾海藻生物多样性与温度波动
Pub Date : 2019-07-12 DOI: 10.30564/JFSR.V1I1.890
Chona Camille Vince Cruz Abeledo
Changes in seaweed biodiversity reflect ecological changes and management of coastal communities. Calatagan Bay is a tourism, agriculture and aquaculture hotspot fronting the Verde Island Passage, touted to be the global center of marine biodiversity. Detection of stressors through monitoring is key in the proper management of the area. This study surveyed existing seaweed species of the coast, and contrasted it with reported species in the area together with fluctuations in sea surface temperatures for the past two decades, contrasted with the local knowledge and perspectives of local coast-dwellers. Seaweed along the coast were collected from a representative area of 50 km2 with species identification based on morphology and pigment. Nine species that were previously unreported were found while fourteen previously reported species were no longer observed. Caulerpa, Kappaphycus and Sargassum, all with known market demands, were the dominant genera.  Sea surface temperature data from local weather stations and the NOMADs database indicate significant warming events from June 1998 to present, with peak sea surface temperature at 31.9oC. Focused group discussions with local communities indicate increased incidences of ice-ice disease, and issues with the uncontrolled use of fertilizers of neighboring farms contaminating their coastal fronts.
海藻生物多样性的变化反映了沿海群落的生态变化和管理。卡拉塔根湾是一个旅游、农业和水产养殖业的热点,毗邻佛得岛通道,被吹捧为全球海洋生物多样性中心。通过监测发现压力源是妥善管理该地区的关键。本研究调查了海岸现有的海藻种类,并将其与该地区报告的物种进行了对比,并与过去二十年来海洋表面温度的波动进行了对比,并与当地沿海居民的当地知识和观点进行了对比。在50 km2的代表性海域采集沿海海藻,根据形态和色素进行物种鉴定。9种以前未报道的物种被发现,14种以前报道的物种不再被观察到。已知市场需求的菜菜属、麻菜属和马尾藻属为优势属。当地气象站和NOMADs数据库的海温数据显示,从1998年6月至今,海温显著变暖,海温峰值为31.9℃。与当地社区进行的重点小组讨论表明,冰冰病发病率增加,邻近农场不受控制地使用化肥污染其沿海地区的问题。
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引用次数: 2
Prevalence of Ectoparasitic Infestation in Indian Major Carps During Winter at Different Blocks of South 24-Parganas District, West Bengal, India 印度西孟加拉邦南部24-Parganas区不同街区主要鲤鱼冬季外寄生流行情况
Pub Date : 2019-07-12 DOI: 10.30564/JFSR.V1I1.851
K. B. Sanyal
The study was carried out to find the prevalence of ectoparasites in carp species specifically Indian Major Carps (IMC) during the post monsoon season (November’16 to March’17). Four groups of ectoparasites viz. myxozoan, ciliophoran, monogenean and crustacean were recorded from a total 500 number of  carp species like, Labeo rohita, Catla catla, Cirrhinus mrigala and Labeo calbasu collected from different ponds of selected blocks of South 24-Parganas district of West Bengal. The highest prevalence (64.8%) of infestation had been recorded by Myxozoans and the lowest was by Monogeneans (4.8%). The highest and lowest ectoparasitic prevalence in carp was observed in L. rohita (32.9%) and C. catla (27.3%). Beside these, lower temperature (Average 19.3oC), low pH (Average 6.9) and marginal level of dissolved oxygen (Average 6.0ppm) were also created an unfavorable condition for parasitic infestation during this season. At the end of this experiment it was concluded that disease occurrences due to ectoparasites was high in winter with some key factors like temperature, pH and dissolved oxygen (DO).
该研究的目的是在季风季节后(2016年11月至2017年3月)发现鲤鱼物种,特别是印度主要鲤鱼(IMC)的外寄生虫流行情况。在西孟加拉邦南部24-Parganas地区选定的不同鱼塘采集的500余种鲤鱼中,记录到黏液虫、纤毛虫、单系虫和甲壳类共4组体外寄生虫,分别为:Labeo rohita、Catla Catla、Cirrhinus mrigala和Labeo calbasu。粘虫感染率最高(64.8%),单系虫感染率最低(4.8%)。鲤体外寄生率最高的是罗希塔(32.9%),最低的是卡特拉(27.3%)。此外,较低的温度(平均19.3℃)、较低的pH值(平均6.9)和溶解氧的边际水平(平均6.0ppm)也为该季节的寄生创造了不利的条件。本试验最后得出结论:冬季外寄生虫致病率高,与温度、pH、溶解氧(DO)等关键因素有关。
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引用次数: 1
Prevalence of Ectoparasitic Infestation in Indian Major Carps During Winter at Different Blocks of South 24-Parganas District, West Bengal, India 印度西孟加拉邦南部24-Parganas区不同街区主要鲤鱼冬季外寄生流行情况
Pub Date : 2019-07-12 DOI: 10.30564/jfs.v1i1.851
Koel Bhattacharya Sanyal
The study was carried out to find the prevalence of ectoparasites in carp species specifically Indian Major Carps (IMC) during the post monsoon season (November’16 to March’17). Four groups of ectoparasites viz. myxozoan, ciliophoran, monogenean and crustacean were recorded from approximately 500 number of  carp species like, Labeo rohita, Catla catla, Cirrhinus mrigala and Labeo calbasu collected from different ponds of selected blocks of South 24 Parganas district of West Bengal. The highest prevalence (64.76%) of infestation had been recorded by Myxozoans and the lowest was by Monogeneans (4.79%). The highest and lowest ectoparasitic prevalence in carp was observed in L. rohita (32.88%) and C. catla (27.28%). At the end of this experiment it was concluded that sudden changes in water quality parameters, over stocking, lack of management practices and some other aspects were the key factors for disease occurrences in this post monsoon season.
该研究的目的是在季风季节后(2016年11月至2017年3月)发现鲤鱼物种,特别是印度主要鲤鱼(IMC)的外寄生虫流行情况。在西孟加拉邦南24帕尔加纳斯区选定区域的不同池塘中采集的500余种鲤鱼中,记录到黏着虫、纤毛虫、单系和甲壳类共4组体外寄生虫,即黏着虫、纤毛虫、单系和甲壳类。粘虫感染率最高(64.76%),单系虫感染率最低(4.79%)。鲤鱼体外寄生率最高的是罗氏L.(32.88%),最低的是卡特拉C.(27.28%)。试验结束时得出的结论是,水质参数的突然变化、放养过多、缺乏管理措施和其他一些方面是季风后季节发生疾病的关键因素。
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引用次数: 3
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Journal of Fisheries and Aquatic Science
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