2020-07-14T08:13:03Z http://www.journal-aquaticscience.com/?_action=export&rf=summon&issue=9335

2015-01-01

Int. J. of Aquatic Science 2015 6 1 Amal Bader Mohammed El Morhit S. El Blidi Ahmed Yahyaoui Mohamed Fekhaoui <span>The Tangier city knew in the last decades an increasing production of household and industrial waste caused problems critical pollution. The objectives, in this study, were to understand the monitoring of water and sediment quality in Tangier area based on the comparison of hydrochemical data variations and land use changes during the urbanization, to distinguish the impact of natural processes and anthropogenic activities on the water and sediment quality. Six metallic trace elements were investigated at 5 water and sediment sites during 2010 and 2012. Concentrations of selected metals were measured using an atomic absorption spectrophotometer (AAS). The results obtained show that the level of the station where the discharged wastewater discharges from the Tangier city, there has been a significant change in the values ​​of the principal elements (Cr and Cd). Indeed, the metal content of the sediments of the Mghogha estuary of these elements reach particularly high values ​​at three levels: in the vicinity of discharges upstream and downstream of the Mghogha estuary respectively characterized by a strong industrial activity and a rejection of domestic wastewater. Significant correlations (p<0.05) between Cr-Cd were observed in sediment and Pb-Fe in water. </span> Tangier sediments Water heavy metals 2015 01 01 3 14 http://www.journal-aquaticscience.com/article_73376_ef5839bd30d9bf38433f9b4c40b3e7c2.pdf

2015-01-01

Int. J. of Aquatic Science 2015 6 1 Subhasish Chatterjee Susanta Kumar Chakraborty <span>This study deals with population dynamics, sex ratio and fecundity of twobrachyuran crabs viz. <em>Sesarma (Chiromantes) bidens</em> and <em>Metopograpsus maculatus</em> belonging to order decapoda and family grapsidae. The present study was conducted during March, 2008 to February, 2010 at two contrasting eco-zones viz. Khejuri-Boga (mixed sand and mudflats endowed with mangroves patches) and Nayachar Island (a newly developed and eco-restored deltaic island) situated on the Hooghly estuary in the intertidal belts of Midnapore coast, India. Role of pronounced ecological parameters influencing the ecology, population and habitat preferences have also been taken into consideration.</span> Crabs coastal belt ecology mangrove 2015 01 01 15 36 http://www.journal-aquaticscience.com/article_73377_7e5fe649a4ba573ef70206e043ce225b.pdf

2015-01-01

Int. J. of Aquatic Science 2015 6 1 Masoud Seidgar <span>Fairy shrimps are freshwater Anostracans which have a great importance to provide live food for cultured sturgeon, trout and ornamental fish due to high nutritional value, high individual biomass, rich carotenoid pigments and potential for bioencapsulation with PUFA, Vitamins and drugs for delivery into the recipient organism and adaptation to freshwater. </span><span>Prawn</span><span> ornamental fish genera, including Angel Fish, Green Tailor, Severum, Gourami, Corydoras, Flower and Afra after adaptation were fed with two test groups, granulated concentrate supplemented with cow heart and spinach as manual diet and granulated concentrate supplemented with fairy shrimp (<em>Phallocryptus</em></span><em><span> spinosa</span></em><span>) as live food. Each treatment was performed in three replicates and conducted in one month. The standard culture, propagation condition and physico-chemical factors of water were provided at optimal condition for each group. In all fish genera, feeding with fairy shrimp showed a significant higher fecundity and hatching percentage compared to manual diet (p<0.05). In all groups fed with fairy shrimp the duration of spawning time were reduced 5-12 days and their colors were significantly changed.</span> Phallocryptus spinosa Prawn Ornamental Fish Reproduction performance 2015 01 01 37 44 http://www.journal-aquaticscience.com/article_73378_3e800158d204ec7259349620be3bc56b.pdf

2015-01-01

Int. J. of Aquatic Science 2015 6 1 Kanij Rukshana Sumi Md. Rajib Sharker Md. Lokman Ali Shib Nath Pattader Zannatul Ferdous Mir Mohammad Ali <span>The present research work was carried out to determine livelihood conditions of fish and Prawn/ Giant freshwater prawn (<em>Macrobrachium rosenbergii</em>) Gher farmers at Beel Dakatia in Dumuria, Phultala and Daulatpur thana under Khulna district from April to September 2013. From the survey the community indicated that 21-40 age groups made maximum strength and majority of them were Muslims (58%). It was found that 16% of them could sign only and the percentages of school going children were high (86%). In the study area, it was found that 88% were married, 62% of people lived with unit families and highest households were 5-7 people per family. The majority of families (72%) had one person for earning and highest income of the people (44%) were 128 to 256 US dollar ($). About 62% people lived in local house and the construction materials were nipa palm and mud, 72% used electricity. The result also showed that 84% peoples main occupation was fish farming. Majority of the people (52%) used others tube well water for drinking, 56% used closed half build toilet. 52% fishermen got health service from Upazila health complex which was the most preferred place. For their recreation 76% used TV/ Radio. About 78% people used lease land for the fish and prawn farming. Thus to achieve better social structure, the government and its development partner needs to re-orient their programmer and to implement to an affirmative action for the fish and prawn Gher farmers.</span> Livelihood Status Gher Farmers Beel Dakatia Khulna Bangladesh 2015 01 01 45 53 http://www.journal-aquaticscience.com/article_73379_59d2243df68f478fb7d6c5a025d62f15.pdf

2015-01-01

Int. J. of Aquatic Science 2015 6 1 Suraini Lajimin Asrazitah Abd Razak Delta Jenetty Denil Julian Ransangan Mohd Effendy Abdul Wahid Ahmed Sade <span>Trash fish is a popular aquaculture feed in Sabah, Malaysia. Among the many fish species, Indian mackerel (<em>Rastrelliger kanagurta</em>), spotted sardine (<em>Sardinella</em> sp.), smoothbelly sardine (<em>Ambligaster leiogaster</em>), mackerel scad (<em>Decapterus macarelus</em>), round scad (<em>Decapterus </em>sp.) and big eyed scad (<em>Selar crumenopthalmus</em>) are the most commonly used trash fish. However, the increasing number of disease outbreaks occurring throughout aquaculture farms has prompted us to conduct this study with the aim to determine if Iridovirus presents in six different species of trash fish namely; Indian mackerel, spotted sardine, smoothbelly sardine, mackerel scad, round scad and big eyed scad collected throughout Sabah. In this study, DNA from 230 fish specimens was subjected to nested-PCR and DNA sequencing analyses. The results showed 15.22% of specimens were found to have been contaminated with Infectious Spleen and Kidney Necrosis Virus (Megalocytivirus, Iridoviridae). This indicates that trash fish can harbor viral pathogen and may likely to transmit it to culture fish during feeding. The reliance on trash fish for aquaculture feeding can jeopardize the sustainability of the aquaculture industry. Therefore, the use of pellet feeds made from certified virus-free ingredients may be the best choice to minimize viral outbreaks. </span> Iridoviridae trash fish cage aquaculture 2015 01 01 54 66 http://www.journal-aquaticscience.com/article_73380_aab80bdb953d951fab89fac37265a824.pdf

2015-01-01

Int. J. of Aquatic Science 2015 6 1 Andrea Fernanda Hernández-Batista José Alberto Ramírez-Torrez Alejandro Azaola-Espinosa Lino Mayorga-Reyes María del Carmen Monroy-Dosta <span>Aquaculture and fisheries represent an important factor in the development of many worldwide communities and in small and large-scale activities for only the 8% of world population. Considering the small-scale fisheries and aquaculture activities as income and animal protein sources of people who work in these habitats, it is unavoidable to take into account economic, social and cultural aspects. Usually this type of activities uses endemic species, as in the case of Mexico, with genus <em>Chirostoma</em> (commonly called white fish or "charales"), which many Mexican families depend almost exclusively on their extraction. Today this genus faces serious problems due to overexploitation, habitat loss and the introduction of exotic species. The most viable option for recovery and subsequent commercial production is the culture and cleaning up of their habitat. In the first case are already made significant efforts for cultivation, however, nothing has been done by the second problem. The goal of this paper is show the present state of the species of the genus <em>Chirostoma</em>, giving options to improve their current condition.</span> Chirostoma fishery aquaculture Mexico 2015 01 01 67 83 http://www.journal-aquaticscience.com/article_73381_07fa47229fd6bbac87ca79800ba9ba6e.pdf

2015-01-01

Int. J. of Aquatic Science 2015 6 1 Jamileh Pazooki Mohammad Sadegh Khakshoor <span>The collected alkaloid compounds of <em>Gelliodes carnosa</em> sponge species from depth of 5-6 meters of Nay band Bay (Iran’s coasts of Persian Gulf) were extracted by three different methods The obtained extract was tested on two gram-positive bacteria (<em>Staphylococcus aureus</em>, PTCC 1189, <em>Bacillus subtilis</em>, PTCC 1156), and five gram-negative bacteria (<em>Escherichia coli</em>,PTCC 1763, <em>Pseudomonas saeroginosa</em>, PTCC 1310, <em>Proteus mirabilis</em>, PTCC 1076, <em>Serattia marcescens</em>, <em>Klebsiella pneumonia</em>), and six pathogenic fungi (<em>Candida albicans</em>, PTCC 5027, <em>Fusarium solani,</em> PTCC 5248, <em>Aspergillus niger</em>, PTCC 5223, <em>Saprolegnia</em> sp., <em>Fusarium</em> sp.1, <em>Fusarium</em> sp.2). The extracted alkaloid compounds from the three methods had a significant inhibitory activity on the growth of all the bacteria and fungi. The anti-bacterial properties of these compounds were more than their anti-fungal properties. The most anti-bacterial and antifungal properties were from the extracts derived by the second method where it created a halos of above 25mm against all the fungi and bacteria. The lowest activity was from the extracts obtained by the third method against <em>Klebsiella pneumonia</em>, <em>Aspergillus niger</em>, and <em>Fusarium</em> sp.2 where an average of 9mm halos was created. Based on the obtained results this sponge can be considered as a source of bioactive substances which have inhibitory activities against some pathogens.</span> bioactive substances sponge Persian Gulf 2015 01 01 84 95 http://www.journal-aquaticscience.com/article_73382_738816e895db7418a9a24a265bd649eb.pdf

2015-01-01

Int. J. of Aquatic Science 2015 6 1 Gustavo A. Rodriguez-Montes de Oca J. Cristóbal Román-Reyes Anabel Alaniz-Gonzalez C. Omar Serna-Delval German Muñoz-Cordova Hervey Rodríguez-González <span>Salinity is an important factor for fish embryonic development. In tilapias, tolerance to salinity at any age is influenced by physiological responses of each species and can be transferred into hybrids. We evaluated the differences with respect to hatching rate (HR), total length at hatching (TL) and yolk sac area (YS) in eggs obtained from breeders kept at 0‰ and directly transferred to salinities of 0, 5, 15, 25, 35, 45, 55 and 65 ‰, after egg collection of the following varieties of tilapia: red tilapia (<em>Oreochromis </em>sp) (RT), a hybrid 1 (H1) obtained from the cross of Nile tilapia (male) X red tilapia (female) and a new red synthetic tilapia as hybrid 2 (H2): Pargo-UNAM. The results showed that salinity above 35-45‰ significantly reduced hatching rates in H1 and H2 until reaching 0% HR at 55 and 65‰, while RT eggs hatched at all salinities. TL decreased significantly >35‰, with an interval with no differences between 0-25‰. YS also decreased >25‰ for H1 and H2, with an overall smaller size for RT. These results provide an insight of morphological differences related to salinity tolerance at early stages, as smaller hatching size and increased yolk sac utilization at salinity >35‰.</span> hatching Salinity Tilapia yolk sack 2015 01 01 96 106 http://www.journal-aquaticscience.com/article_73383_c15616762fec00f36af200b658f2a7b8.pdf