Juniper Publishers-Oceanography Open Access Journal

Juniper Publishers- Open access journal of Oceanography and Fisheries Starfish are a group of marine invertebrates that exist in ecosystems with sea grass, coral, rocky substratum, etc., from shallow areas to the deepest regions in the ocean. They typically have a central disc and five arms, though some species have a larger number of arms. The aboral or upper surface may be smooth, granular or spiny, and is covered with overlapping plates. Starfish have tube feet operated by hydraulic system and a mouth at the center of the oral or lower surface. The class Asteroidea is one among the various groups within the phylum Echinodermata, including nearly 1900 extant species grouped into 36 families, and approximately 370 extant genera. Asteroids occur at all depths from the intertidal to the abyssal and are present throughout all over the world’s oceans, but are most diverse in the tropical Atlantic and Indo-Pacific regions. For more open access journals in Juniper publishers ple

Juniper Publishers- Open access journal of Oceanography and Fisheries Diversity of Zooplankton in River Siang of Arunachal Pradesh, India Zooplankton is a group of micro-organisms which do not have strong power of locomotion and usually move by being drifted by water current. In up-stream region of River Siang, they were less in numbers in most of the sampling sites. During the study period, 24 different genera of zooplankton were recorded from the River Siang. The recorded zooplanktons were classified into 5 different groups, among which, Protozoans were represented by 6 genera (22%); Rotifera by 7 genera (30%); Cladocera by 5 genera (22%); Ostracoda by 1 genus (4%) and Copepoda were represented by 5 genera (22%). For more open access journals in Juniper publishers please click on: https://juniperpublishers.com To read more articles please click on: https://juniperpublishers.com/ofoaj/OFOAJ.MS.ID.555558.php For more articles on Open AccessJournal of Oceanography &a

Juniper Publishers- Open access journal of Oceanography and Fisheries Compliance and Enforcement of the Fisheries Regulations on Lake Malawi in Nkhatabay District Both enforcement and compliance with fisheries regulation affect the sustainable exploitation and conservation of the fisheries resources in Lake Malawi . The study analyzed the factors that affect compliance with fisheries regulations and also the challenges that affect success of government’s enforcement of fisheries regulations. The study was conducted in Nkhata Bay district, northern Malawi. Qualitative data was collected using questionnaires from 78 fishery resource users selected using simple random and purposive methods. Factors for both challenges faced by government’s enforcement and compliance by resource users with fisheries regulations were analyzed in SPSS (version 20) using regression models at 95% confidence level. The results show that self-interest and awareness of regulations (P0.05) contribute to

Juniper Publishers- Open access journal of Oceanography and Fisheries Anthropogenic Noise in the Marine Environment: Pressures, Trends and Efforts to Prevent the Irreversible Human activities introduce noise, i.e. unwanted sound, into the marine environment either intentionally for a specific purpose (e.g., seismic surveys) or unintentionally as a by-product of their activities (e.g., shipping or construction). Anthropogenic noise can be broadly split into two main types: impulsive and continuous. The first type includes sounds from offshore construction (construction of cables and pipelines, construction of offshore wind farms, bridges and oil platforms, explosives, pile driving), sonars (naval-military sonars, echosounders - fisheries sonars), seismic survey (airgun arrays operation for oil and gas exploration) and acoustic deterrent and harassment devices. The second type includes sounds from offshore industrial activities (operation of offshore wind farms and oil platform

Juniper Publishers- Open access journal of Oceanography and Fisheries Structural and Thermodynamic Properties of Tropomyosins from the Ordinary and Hybrid Tilapia Tilapia is a very common aquaculture species in Taiwan and both the so-called freshwater tilapia (Oreochromis niloticus) and seawater tilapia (O. mossambica) are available. In order to characterize muscle tropomyosin from these tilapia and hybrid ones (O. mossambica × O.niloticus ), the biochemical properties of tropomyosin among these tilapia species were analysed. The nucleotide sequences of tropomyosin genes were determined by cDNA cloning, and the amino acid sequences were deduced. Fast skeletal muscle tropomyosins were isolated by the combination of isoelectric point precipitation and salting out with ammonium sulfate. The thermodynamic properties of the purified tropomyosins were examined by differential scanning calorimetry (DSC) and circular dichroism (CD) spectrometry. The results showed that those tropomy

Juniper Publishers- Open access journal of Oceanography and Fisheries Estimation of Demographic Change in Fishing Population for Fisheries Management in Chilika Lagoon, India: A Micro-Demographic Approach Demographic change is considered an important factor for managing the fisheries, but little is actually known about demographic characteristics of fishing communities and their causes. On this account, this article aims to examine the changes which have taken place in the number of fishers and their families in the context of demographic trends through a case study of a specific fisher village of Chilika Lagoon, India. The micro-demographic survey revealed that there has been an increasing trend in the proportion of the village population. The population growth was largely determined by fertility and mortality in comparison to migration. Fishing population growth in combination with changes in their fishing practices will boost the likelihood and intensity of excessive comp

Juniper Publishers- Open access journal of Oceanography and Fisheries Deposition of the Mn in the Tissues of Crucian Carp in the Coal Gangue Polluted Water and Natural Water Coal gangue is the solid waste material in the process of coal mining and coal washing, which contains a lot of heavy metal: Manganese (Mn), which poses a serious threat to food security and human health. In order to study the present pollution situation of Mn and the deposition of Mn in the tissues of fish from gangue polluted water of Yongcheng, Shangqiu, Mn was determined by using the flame atomic absorption method. The results show that the concentration of Mn in the heart, hepatopancreas, gills, muscles of crucian carp from pollution-free waters in Tianmu Lake were 138.96.±35.85 (μg/g ), 10.20±4.92 (μg/g), 30.02±7.62 (μg/g), 14.64±4.06(μg/g); whereas they were 316.48±23.41 (μg/g ), 25.84±6.03 (μg/g), 70.18±14.67 (μg/g), 30.09±10.44(μg/g) in the crucian carp from the coal mining subsidence area. The

Juniper Publishers- Open access journal of Oceanography and Fisheries Temporal And Spatial Changes In Water Quality In Lake Malawi/Niassa, Africa: Implications For Cage Aquaculture Management Water temperature (WT), Secchi depth (SD), Percent dissolved oxygen (%DO), Dissolved oxygen (DO), Total nitrogen (TN), Total phosphorous (TP), and Chlorophylla (Chla) were measured in three sites, one at the farm (site 2) and two, 5 km northwest (site 1) and southeast (site 3) of the farm respectively, in February, April, June, and August 2012 to assess their spatial and temporal change in relation to cage aquaculture. There was clear seasonal change in % DO, DO, Chla, and SD at all sites. WT, % DO, and DO were consistently greater at site 1 than at site 3. Chla and SD were inversely correlated. The highest Chla and lowest SD occurred in April. The water was less clear at the farm, relative to the non-farm sites. Interestingly, this pattern was not seen in the Chla suggesting that decre

Juniper Publishers- Open access journal of Oceanography and Fisheries Replacement of Fishmeal By 60% with Soybean Meal or Peanut Meal in Diets for Juvenile Mangrove Red Snapper (Lutjanus argentimaculatus) (Forsskål, 1775) by  Xiaoyi Wu in    Oceanography & Fisheries Open Access Journal in  Juniper Publishers   A feeding trial was undertaken to develop a low fishmeal practical diet for mangrove red snapper ( Lutjanus argentimaculatus ) by replacing 60% fishmeal (FM) protein with either soybean meal (SM) or peanut meal (PM) and 10% fish solubles (FS) or krill solubles (KS) supplementation. Seven isonitrogenous (crude protein: 40% dry matter) and isolipidic (crude lipid: 9% dry matter) diets were prepared [Diet 1 / FM100, Diet 2 / (FM40+SM), Diet 3 / (FM40+SM+FS), Diet 4 / (FM40+SM+ KS), Diet 5 / (FM40+PM), Diet 6 / (FM40+PM+FS), Diet 7 / (FM40+PM+ KS)]. Triplicate groups of fish (initial body weigh: 1.46±0.02 g, mean ± S.D.) were stocked in 150-l circular fi

Oceanography & Fisheries Open Access Journal | Juniper Publishers   Oceanography and Fisheries Open access journal (OFOAJ) is a peer reviewed, premium quality journal that aims to showcase advanced research in the field of Oceanography and Fishery science and all the related areas. Oceanography is the study of marine ecosystems, including the biological, chemical and physical aspects while Fisheries deals with several aspects of marine biology as well as limnology, fish population dynamics, conservation and several related subjects. OFOAJ publishes a wide variety of articles like research papers, review papers, case reports and short communication in all the concerned areas. For more open access journals please click on : Juniper Publishers. For more open access journals please click on : https://juniperpublishers.com/ofoaj/index.php