Fisheries and Aquaculture Journal最新文献_第9页

Population Dynamic and Stock Assesment of White Seabream Diplodus sargus (Linnaeus, 1758) in the Coast of North Siani 北西亚尼海岸白鳍鲨种群动态及种群数量评价(Linnaeus, 1758

Fisheries and Aquaculture Journal Pub Date : 2015-12-16 DOI: 10.4172/2150-3508.1000152

Ahmed M. AL-Beak, Ghoneim, Si, El-Dakar Ay, M. Salem

引用次数: 11

Surface Topography of the Anterior Adhesive Apparatus of the Gill Monogenean Parasite Diplectanum sp. diesing, 1858, with some Surface Criteria 鳃单系寄生虫Diplectanum sp. diesing, 1858的前粘附器表面形貌及一些表面标准

Fisheries and Aquaculture Journal Pub Date : 2015-12-10 DOI: 10.4172/2150-3508.1000150

Marwa Mohammed Abou Hadied, A. Khidr, O. A. A. Samak, A. Said

{"title":"Surface Topography of the Anterior Adhesive Apparatus of the Gill Monogenean Parasite Diplectanum sp. diesing, 1858, with some Surface Criteria","authors":"Marwa Mohammed Abou Hadied, A. Khidr, O. A. A. Samak, A. Said","doi":"10.4172/2150-3508.1000150","DOIUrl":"https://doi.org/10.4172/2150-3508.1000150","url":null,"abstract":"Surface topography of anterior adhesive apparatus was studied of the gill monogenean parasite Diplectanum sp. Diesing, 1858 inhabiting the marine water fish Dicentrachus sp. using SEM. The study revealed that the parasite has three head lobes on each anterolateral region of the head; each lobe accommodates a single, ventrally located adhesive sac. These sacs receive secretion from glands openings that located on the lumen of these sacs. Rodshaped secretory bodies and granular irregularly shaped bodies which may be secretory bodies of the adhesive gland cells were seen open into the adhesive sacs. The tegument of the anterior adhesive area of Diplectanum sp. was characterized by many microvillous like structure. The possible functions of these distinctive features in the temporary attachment are discussed. Numerous adhesive papillae presumed sensory structures were found associated with the tegument of the anterior adhesive area and ventral surface of the body. A single ciliary structure supported by a collar of tegument occurs singly close to the mouth opening. It is suspected to be ciliated sensory ending serve to locate feeding sites. The possible functions of these presumed sensory structures were discussed. The parasite adaptation in its microhabitat in facing the strong water current inside the host fish gills was discussed","PeriodicalId":166175,"journal":{"name":"Fisheries and Aquaculture Journal","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132752442","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: 5

Loose Shell Syndrome (LSS) in Litopenaeus vannamei grow-out Ponds and its Effect on Growth and Production 凡纳滨对虾生长池的松壳综合征及其对生长和生产的影响

Fisheries and Aquaculture Journal Pub Date : 2015-12-10 DOI: 10.4172/2150-3508.1000151

K. Raja, A. Gopalakrishnan, Rajkumar Singh, R. Vijayakumar

引用次数: 9

Jellyfish and Ctenophores in the Environmentally Degraded Limfjorden (Denmark) During 2014 - Species Composition, Population Densities and Predation Impact 2014年环境退化的Limfjorden(丹麦)中的水母和栉水母——物种组成、种群密度和捕食影响

Fisheries and Aquaculture Journal Pub Date : 2015-11-27 DOI: 10.4172/2150-3508.1000137

H. U. Riisgård, Josephine Goldstein, K. Lundgreen, F. Lüskow

{"title":"Jellyfish and Ctenophores in the Environmentally Degraded Limfjorden (Denmark) During 2014 - Species Composition, Population Densities and Predation Impact","authors":"H. U. Riisgård, Josephine Goldstein, K. Lundgreen, F. Lüskow","doi":"10.4172/2150-3508.1000137","DOIUrl":"https://doi.org/10.4172/2150-3508.1000137","url":null,"abstract":"Species composition, population densities and size of jellyfish and ctenophores were recorded during 5 cruises in the heavily eutrophicated Limfjorden in 2014. No or very few ctenophores (Pleurobrachia pileus) and jellyfish (Aurelia aurita, Cyanea lamarckii) were recorded in April and June 2014, whereas in August and September numerous small individuals of the invasive ctenophore Mnemiopsis leidyi were found on all 4 locations studied, which were strongly reduced in population density during November. M. leidyi exerted a notable predation impact, most pronounced in Logstor Bredning and Skive Fjord in August when the estimated half-lives of zooplankton were 4.8 and 7.3 d, respectively, and in late September, when the half-life in Skive Fjord was only 2.2 d. Severe oxygen depletion in Logstor Bredning and Skive Fjord between June and September resulted in a release of nutrients. This was followed by a bloom of the dinoflagellate Noctiluca scintillans and a subsequent peak in the abundance of copepods which decreased rapidly after the introduction of M. leidyi into Limfjorden from the North Sea (between early April and mid- July) to become virtually absent during the rest of the season. This subsequently resulted in starvation and decay of the M. leidyi population. The small predatory ctenophore Beroe gracilis was recorded on most locations during August and September 2014 but although B. gracilis eats small M. leidyi, their low number suggested a negligible predation impact on the M. leidyi population. Our present understanding of the many biological and environmental factors that control the species composition, abundance and predation impact of jellyfish and ctenophore populations in Limfjorden are discussed. It is concluded that there are many unsolved questions, e.g. how gelatinous predation of zooplankton may reinforce anoxia and further habitat degradation in eutrophicated waters.","PeriodicalId":166175,"journal":{"name":"Fisheries and Aquaculture Journal","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131655860","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: 9

Changes in Physico-chemical Parameters at different Sites of Manasbal Lake of Kashmir, India 印度克什米尔Manasbal湖不同地点理化参数的变化

Fisheries and Aquaculture Journal Pub Date : 2015-11-24 DOI: 10.4172/2150-3508.1000148

G. Naik, M. Rashid, Balkhi Mh

{"title":"Changes in Physico-chemical Parameters at different Sites of Manasbal Lake of Kashmir, India","authors":"G. Naik, M. Rashid, Balkhi Mh","doi":"10.4172/2150-3508.1000148","DOIUrl":"https://doi.org/10.4172/2150-3508.1000148","url":null,"abstract":"In an aquatic ecosystem, the density and diversity of organisms depend on availability and quality of water. During the present study an attempt was made to analyse some of the important physico-chemical parameters of the water samples at three different sites of the Manasbal Lake to check the pollution load. Various parameters were analysed for a period of six months from July 2010 to December 2010 on monthly intervals by following standard methods. Among the various parameters recorded the overall Air temperature ranged from 7.2°C to 30.2°C; surface water temperature ranged from 6.1°C to 26.5°C; Secchi-disc transparency from 1.5 m to 4.5 m; Conductivity varied from 149 to 292 μS cm-1; Dissolved oxygen from 2.5 to 8.8 mg L-1; Free Co2 from 0.2 to 13.4 mg L-1; pH from 8.1 to 9.2; Total Alkalinity varied from 126 to 243 mg L-1; Chloride values ranged from 5.9 to 33.5 mg L-1; Total Hardness ranged from 119 to 218 mg L-1; Ammonical Nitrogen varied from 27 to 193 μg L-1; Nitrate Nitrogen varied from 31 to 286 μg L-1; Ortho-Phosphate Phosphorous varied from 4.3 to 33.0 μg L-1 and Phosphate Phosphorous ranged from 83.0 to 261 μg L-1. Almost all the above parameters showed that the pollution load is increasing especially at littoral sites due to agricultural run-off and human settlements disposing sewage, besides anthropogenic stresses in the catchment area. The pH of water of this lake was higher due to calcium intrusion from Kondabal area. Hence, the present study urges the need for immediate remedial measures for protection and conservation of this lake in order to save it from further deterioration.","PeriodicalId":166175,"journal":{"name":"Fisheries and Aquaculture Journal","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124950921","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: 13

Importance of Transgenic Fish to Global Aquaculture: A Review 转基因鱼类对全球水产养殖的重要性综述

Fisheries and Aquaculture Journal Pub Date : 2015-11-15 DOI: 10.4172/2150-3508.1000E124

R. Wakchaure, S. Ganguly, Kausar Qadri, P. Praveen, T. Mahajan

引用次数: 10

Morphological and Molecular Characterization of Diplozoon kashmirensis;D. aegyptensis and D. guptai Collected from Fishes of Kashmir Valley-India 喀什米尔双龙虫的形态与分子特征;古埃及伊蚊和古埃及伊蚊来自印度克什米尔山谷的鱼类

Fisheries and Aquaculture Journal Pub Date : 2015-10-27 DOI: 10.4172/2150-3508.1000147

F. Ahmad, K. Fazili, T. A. Sofi, Bashir A. Sheikh, A. Waza, Rabiya Rashid, Tantry Tariq Gani

{"title":"Morphological and Molecular Characterization of Diplozoon kashmirensis;D. aegyptensis and D. guptai Collected from Fishes of Kashmir Valley-India","authors":"F. Ahmad, K. Fazili, T. A. Sofi, Bashir A. Sheikh, A. Waza, Rabiya Rashid, Tantry Tariq Gani","doi":"10.4172/2150-3508.1000147","DOIUrl":"https://doi.org/10.4172/2150-3508.1000147","url":null,"abstract":"The study reports the results of molecular characterization of the Internal Transcribed Spacer (ITS) of ribosomal DNA of 3 Monogenean species using polymerase chain reaction (PCR), nucleotide sequencing and construction of phylogenetic trees from different fish hosts of Kashmir. The present study shows that the size of the amplified product is 873bp long for D. kashmirensis, 1120bp long in D. aegyptensis and 687bp long in D. guptai revealing that there are intraspecific differences in their base pair lengths. Guanine and Cytocine (G+C) content of three Diplozoon species was found nearly constant for three species i.e., 47% (D. kashmirensis); 47% (D. aegyptensis) and 48% (D. guptai), this GC richness contributes to physical attributes of RNA structures, as there is correlation between GC content and optimal growth temperature. An important observation during the present study has been noticed that Schizothorax niger is infected by all the three species of Diplozoidae; D. kashmirensis; D. aegyptensis and D. guptai, but when all six fishes were collected simultaneously, parasitism by all the parasite species was never observed. Phylogenetic trees Maximum Parsimony (MP), Maximum Likelihood (ML) and Neighbor Joining (NJ) showed that D. kashmirensis and D. aegyptensis share a common host Carassius carassius and S. niger.","PeriodicalId":166175,"journal":{"name":"Fisheries and Aquaculture Journal","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127001538","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: 6

Procedure for Maturation and Spawning of Imported shrimp Litopenaeus vannamei in Commercial Hatchery, South East Coast of India 印度东南海岸商业孵化场进口凡纳滨对虾的成熟和产卵程序

Fisheries and Aquaculture Journal Pub Date : 2015-10-24 DOI: 10.4172/2150-3508.1000146

D. Kannan, P. Thirunavukkarasu, K. Jagadeesan, N. Shettu, Aswini Kumar

{"title":"Procedure for Maturation and Spawning of Imported shrimp Litopenaeus vannamei in Commercial Hatchery, South East Coast of India","authors":"D. Kannan, P. Thirunavukkarasu, K. Jagadeesan, N. Shettu, Aswini Kumar","doi":"10.4172/2150-3508.1000146","DOIUrl":"https://doi.org/10.4172/2150-3508.1000146","url":null,"abstract":"The reproductive performance of the broodstock was assessed at each stage of the maturation and spawning process. Measures of maturation rate, spawning rate, fecundity, hatch rate and nauplii production rate were obtained. The reproductive performance was found for the imported Specific Pathogen Free (SPF) broodstock from Shrimp Improvement system (SIS), Florida, USA. The no.of spawning, eggs quantity, fertility, hatching rate and nauplii production were lowest in 1st to 3rd spawning when females were 7 months old and increased from 4th spawning rate onwards. As the size of females increased from 30 g to 52 g the mean number of eggs per spawning increased from 150,000 to 442,000. Although female body weight was increasingly larger through the study period and the larger females would be expected to produce more eggs per spawning and hatching. The hatching rate was increased from 3rd spawning onwards. The nauplii production rate (NPR), which is a function of egg production and hatching rate, showed a significant increasing from 48% to 96%. In 10th spawning all the activities were increased. This information can be used to select broodstock for hatchery production.","PeriodicalId":166175,"journal":{"name":"Fisheries and Aquaculture Journal","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127094816","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: 12

Survey on Phytoplankton Biomass and Water Parameters in the Habitats of Invasive Tigers Shrimps (Penaeus Monodon) in Nigeria 尼日利亚入侵虎虾(Penaeus Monodon)栖息地浮游植物生物量和水分参数调查

Fisheries and Aquaculture Journal Pub Date : 2015-10-24 DOI: 10.4172/2150-3508.1000145

Oketoki To

{"title":"Survey on Phytoplankton Biomass and Water Parameters in the Habitats of Invasive Tigers Shrimps (Penaeus Monodon) in Nigeria","authors":"Oketoki To","doi":"10.4172/2150-3508.1000145","DOIUrl":"https://doi.org/10.4172/2150-3508.1000145","url":null,"abstract":"Penaeus monodon is an invasive species found in the coastal waters of Nigeria. Although widely exploited with significant economic importance, investigation into its adaptation and potential ecological impact in the newly found environment is poorly known. This survey provides baseline information on the phytoplankton community and physico-chemical parameters in ten selected stations from five states where they are exploited in Nigeria. These include: Ibeno (Akwa Ibom State), Bonny (Rivers State), Kaa (Rivers State), Brass (Bayelsa State), Aiyetoro (Ondo State), Makoko (Lagos state), Folu (Lagos state), Apapa (Lagos state), Tin Can Island (Lagos state) and Tarkwa Bay (Lagos state). Total of 147 species of phytoplankton from six classes were recorded during the survey with diatoms being the most prevalent (70.4%), green algae (20.4%), Blue-green algae (5.6%), Chrysophyceae (1.9%). Water parameters recorded temperature (range: 27.33 ± 1.53°C-29.00 ± 1.00°C), pH (7.39 ± 0.08-8.13 ± 0.14), dissolved oxygen (5.40 ± 3.22 mgL-1-8.00 ± 1.44 mgL-1), Conductivity (11.22 ± 10.03 μS/cm-39.33 ± 5.87 μS/cm) and salinity (11.02 ± 15.56% -25.98 ± 2.02%). Lowest values for phosphate, nitrate-nitrogen and sulphate were 0.11 ± 0.07mgL- 1, 0.10 ± 0.07 mgL-1 and 523.67 ± 880.21 mgL-1 respectively. Generally, ecological factors in their newly found environment are similar to their native range. However, negative impact as an invasive species most be checked.","PeriodicalId":166175,"journal":{"name":"Fisheries and Aquaculture Journal","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129163869","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: 6

Controlling Chaos in a Food Chain Model through Threshold Harvesting 通过阈值收获控制食物链模型中的混沌

Fisheries and Aquaculture Journal Pub Date : 2015-08-26 DOI: 10.4172/2150-3508.1000142

Mohammad Ali Khan, Joydev Ghosh, Banshidhar Sahoo

引用次数: 7