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Results 251 - 300 of 1077
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Patterson Ashley C - - 2008
OBJECTIVE: North American diets are low in eicosapentaenoic acid (20:5n-3, EPA) and docosahexaenoic acid (22:6n-3, DHA). This investigation aims to assess the ability to increase EPA and DHA in the Canadian diet using traditional whole food, functional food or nutraceutical strategies. METHODS: A typical Canadian diet (TC) was compared to ...
Salami Indah Rachmatiah Siti - - 2008
Freshwater fish demand in West Java is supported by cage aquaculture in reservoirs. Cirata Reservoir is one of three cascading hydropower reservoirs built along the Citarum River that receives domestic and industrial wastes. Water pollution by heavy metals, such as copper and lead, increases the health risk of humans who ...
Giljov Andrey N - - 2009
Some animals, notably birds, preferentially approach and capture food items in their right visual field. However, this lateralised behaviour has not been studied extensively in anamniotes. Here we test eye preference during feeding for a fish, (Perccottus glenii; Teleostei, Perciformes), a newt, (Pleurodeles walti; Amphibia, Caudata), and a frog, (Xenopus ...
Stringer C B - - 2008
Two coastal sites in Gibraltar, Vanguard and Gorham's Caves, located at Governor's Beach on the eastern side of the Rock, are especially relevant to the study of Neanderthals. Vanguard Cave provides evidence of marine food supply (mollusks, seal, dolphin, and fish). Further evidence of marine mammal remains was also found ...
Martinho F - - 2008
The seasonal variation of five selected multimetric indices for the determination of the Ecological Quality Status (EQS) of transitional waters was evaluated, as well as the indices' responses to an extreme drought event that occurred in 2005. The database used regards the Mondego River estuary, which was sampled from June ...
Cole David W - - 2009
Aquaculture is one of the fastest growing food-producing sectors, supplying approximately 40% of the world's fish food. Besides such benefit to the society, the industry does have its problems. There are occupational hazards and safety concerns in the aquaculture industry. Some practices have caused environmental degradation. Public perception to farmed ...
Kido, Michael H
The five native species of amphidromous gobioid fishes inhabiting Hawaiian streams were compared for dentition, gut length to body length ratios, intestinal convolution, gill raker morphology, position of mouth, and diet. Based on morphological comparisons, three manipulative modes of feeding are indicated, as follows: picking-biting, rock scraping, and sediment foraging. ...
Valentine John F - - 2008
The removal of fish biomass by extensive commercial and recreational fishing has been hypothesized to drastically alter the strength of trophic linkages among adjacent habitats. We evaluated the effects of removing predatory fishes on trophic transfers between coral reefs and adjacent seagrass meadows by comparing fish community structure, grazing intensity, ...
McClanahan Tim R - - 2008
This study examined trends along a gradient of fishing intensity in an artisanal coral reef fishery over a 10-year period along 75 km of Kenya's most populated coastline. As predicted by Malthusian scenarios, catch per unit effort (CPUE), mean trophic level, the functional diversity of fished taxa, and the diversity ...
Redwood Diana G DG Alaska Native Tribal Health Consortium, Anchorage, Alaska, USA. - - 2008
To determine the prevalence of traditional food and physical activity use and associations with cultural factors among 3,830 Alaska Native and American Indian (AN/AI) people enrolled in the Education and Research Towards Health (EARTH) Study in 3 regions of Alaska. Cross-sectional analysis of baseline data from a cohort study. Participants ...
Leal Esther - - 2009
This study was conducted to test the sensitivity to gonadal steroids of the systems regulating food intake in sea bass. Animals were treated with silastic implants containing 17-beta-estradiol or testosterone. Self-feeding was recorded for 31 days using computerized demand feeders and unfed-pellet recovery systems. Both steroids strongly decreased self-feeding levels, ...
Kunwar Prabesh Singh - - 2009
The present study was conducted to extend the understanding of the combined physiological effects of different food rations in combination with sublethal levels of copper in common carp (Cyprinus carpio). Fish acclimated to low (0.5% body weight) and high (5% body weight) food rations were exposed to 1 microM copper ...
Augood Cristina - - 2008
BACKGROUND: Fish intake, the major source of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), may reduce the risk of age-related macular degeneration (AMD). OBJECTIVE: We investigated the association of oily fish and dietary DHA and EPA with neovascular AMD (NV-AMD). DESIGN: Participants aged >/=65 y in the cross-sectional population-based EUREYE ...
Floyd Emily Y - - 2008
The present study determined the effects of environmentally relevant, short-term (4-h) exposure to the pyrethroid insecticide esfenvalerate on mortality, food consumption, growth, swimming ability, and predation risk in larvae of the fathead minnow (Pimephales promelas). Acute effect concentrations were determined, and in subsequent experiments, fish were exposed to the following ...
Tomy Gregg T - - 2008
Juvenile rainbow trout (Oncorhynchus mykiss) were exposed in the laboratory to elevated doses of syn- and anti-isomers of Dechlorane Plus (DP) via their diet for 49 days (uptake phase), followed by 112 days of untreated food (depuration phase) to examine bioaccumulation parameters and possible metabolic products. Three groups of 60 ...
Bhassu S - - 2008
Seven single locus dinucleotide microsatellite markers were developed to characterize an economically important sport fish and food fish in Malaysia and in Southeast Asia. They were obtained by using a rapid method namely the 5' anchored PCR enrichment protocol. The specific primers were designed to flank the repeat sequences and ...
Swapna I - - 2008
Seabream gonadotropin-releasing hormone (sbGnRH)-the chief preoptic area-hypothalamus (POA-H) form of GnRH in tilapia is involved in sexual maturation. In this study, we investigated the qualitative changes in ontogeny of sbGnRH immunoreactivity (ir-), between sexes to understand its impending role during sex differentiation. For this, the differences in immunocytochemical localization of ...
Peretti D - - 2008
The present study is inspired by the great wealth of species exhibited by the ichthiofauna. Not only concepts and techniques of ecology deserve attention, but also knowledge in other biological areas, such as zoology and anatomy, are necessary. The intention of the present work is to discover the morphology of ...
Pope Karen L - - 2008
Sport-fish introductions are now recognized as an important cause of amphibian decline, but few researchers have quantified the demographic responses of amphibians to current options in fisheries management designed to minimize effects on sensitive amphibians. Demographic analyses with mark-recapture data allow researchers to assess the relative importance of survival, local ...
Burger Joanna J Division of Life Sciences, Environmental and Occupational Health Sciences Institute, Rutgers University, 604 Allison Road, Piscataway, NJ 08854-8082, USA. - - 2008
Fish are a healthy source of protein, but the risks from consuming fish have become a national concern. Over the past 7 years, there have been a number of national advisories regarding saltwater fish. Fish consumption patterns and public knowledge about advisories and warnings have been examined for at-risk populations, ...
Del Gobbo Liana - - 2008
Dietary intake is a major route of exposure to perfluorinated compounds (PFCs). Although fish and seafood contribute significantly to total dietary exposure to these compounds, there is uncertainty with respect to the effect of cooking on PFC concentrations in these foods. Eighteen fish species purchased from markets in Toronto, Mississauga, ...
Ansari, Z.A.
Fish is a protein rich food. It forms a chief component in the diet of about 90% of the population of Goa. Capture fisheries of Goa (India) constitute a highly productive sector. They remain one of the major sources of valuable food and employment and a net contributor in the ...
Chae Jinho - - 2008
Gut contents of two species of demersal fishes, Pleurogrammus azonus and Dasycottus steiger were examined to understand the importance of a euphausiid, Euphausia pacifica as prey of demersal fishes at coastal waters off Uljin, the eastem Korea where aggregations of large amounts of the euphausiids were found. Euphausiids were significantly ...
Gashaw Fikru - - 2008
The objective of this study was to assess the potential of the snails Physa acuta and Melanoides tuberculata and the African catfish Clarias gariepinus as biological control agents against the Schistosoma mansoni intermediate host Biomphalaria pfeifferi under laboratory conditions. Groups of five target and five competitor snails were raised together ...
Xu De-Hai - - 2008
The fish extoparasite Ichthyophthirius multifiliis was subjected to tricaine methanesulfonate (TM) exposure while fish were anesthetized for parasite collection. No information is available on the effects of TM exposure to I. multifiliis. This study evaluated the effects of TM on the survival and reproduction of I. multifiliis. Significant differences were ...
Cosson Jacky - - 2008
After a long period of spermatogenesis (several weeks to months), marine fish spermatozoa are delivered at male spawning in seawater (SW) at the same time as ova. In some fish species, as the ova micropyle closes quickly after release, these minute unicells, the spermatozoa, have to accomplish their task of ...
Polakof Sergio - - 2008
We hypothesize that variations in dietary carbohydrate levels produce changes in glucosensor parameters in previously characterized glucosensing areas (hypothalamus and hindbrain) related with the regulation of food intake of a carnivorous fish species like rainbow trout. Therefore, we fed trout with standard, carbohydrate-free (CF) or high-carbohydrate (HC) diets for 10 ...
Derby Charles D - - 2008
This manuscript reviews the chemical ecology of two of the major aquatic animal models, fish and crustaceans, in the study of chemoreception. By necessity, it is restricted in scope, with most emphasis placed on teleost fish and decapod crustaceans. First, we describe the nature of the chemical world perceived by ...
Tsuchiya Ami - - 2008
BACKGROUND: Fish consumption advisories are developed to prevent overexposure to various contaminants. Recently, discussion has centered on the need to consider the benefits of fish consumption alongside possible risks when providing guidance. OBJECTIVE: As part of the Arsenic Mercury Intake Biometric Study involving the Japanese and Korean communities living in ...
Vumazonke, Lukhanyiso U ; ...
The winter diet and daily ration of four small size classes of estuary-associated fishes, <i>Rhabdosargus holubi</i>, <i>Gilchristella aestuaria</i>, <i>Glossogobius callidus</i> and <i>Monodactylus falciformis</i>, from the temporarily open/closed Igoda Estuary were investigated. The diet of <i>G. callidus</i> was dominated by gammarid amphipods and copepods. Copepods accounted for 70% by volume of ...
Omolafe, O O; ;
Some aspects of the biology of Tilapia zillii were examined between October 1997 and February 2000. Fish specimens were collected using a graded set of gillnets and castnets. Out of 1486 fish specimens, 867 were males while 619 were females. Regardless of their sex a significantly high number of fish ...
Miguel-Queralt Solange - - 2008
As in most vertebrates, plasma sex hormone-binding globulin (SHBG) is produced in fish liver and regulates sex steroid access to target tissues. Low levels of SHBG mRNA are present in zebra fish gills but are unlikely to account for the high amounts of immunoreactive SHBG in filaments and lamellae. Although ...
Weber Christopher L - - 2008
Despite significant recent public concern and media attention to the environmental impacts of food, few studies in the United States have systematically compared the life-cycle greenhouse gas (GHG) emissions associated with food production against long-distance distribution, aka "food-miles." We find that although food is transported long distances in general (1640 ...
Besselink H - - 2008
In this study the potential impact of food chain-based biotransformation and physico-chemical weathering of toxaphene on its tumour promoting potential was investigated in vitro and in vivo. Human exposure to toxaphene is mainly through consumption of contaminated fish, therefore fish-borne residues of toxaphene (cod liver extract, CLE) were prepared by ...
Bryan, Patrick G
Analyses of stomach contents of Siganus spinus showed that algal availability and size and behavior characteristics of the fish determine what kinds of algae are ingested in the field. Sixty-two algal species were tested during multiple choice food preference trials in the laboratory. Elimination trials and observation tests showed a ...
Ye Xibiao - - 2008
A method for the analysis of 10 perfluorinated compounds (PFCs) in whole fish homogenate is presented and applied to 60 fish samples collected from the Ohio, Missouri, and upper Mississippi Rivers in 2005. Method accuracy ranged between 86 and 125% with limits of quantitation between 0.2 and 10 ng/g wet ...
Li Xuemei - - 2008
Perfluorinated compounds (PFCs) were measured in zooplankton and five fish species collected from Gaobeidian Lake, which receives discharge from wastewater treatment plant (WWTP) in Beijing, China. The mean total PFCs in five fish were in the order: crucian carp>common carp>leather catfish>white semiknife carp>tilapia. Perfluorooctane sulfonate (PFOS) occurred at the greatest ...
VILLANUEVA, Ching-Maria
An Ecopath model of the southern part of Lake Kivu, a deep African equatorial lake was constructed to quantitatively describe the possible impact of fish introductions in this ecosystem. This study is considered as an initial step in summarizing ecological and biological information, under a coherent framework, on this ecosystem. ...
Chi Tran T K - - 2008
The prevalence of fish-borne zoonotic trematode (FZT) metacercariae was investigated in fish farmed by rural households in Nghe An Province, located in northern Vietnam. In total, 716 fish, including tilapia (Oreochromis niloticus) and 6 carp species, i.e., grass carp (Ctenopharyngodon idellus), bighead carp (Aristichthys nobilis), mrigal (Cirrhinus mrigala), common carp ...
Harada Yasuo - - 2008
CONCLUSION: The lagena of pigeons is a unique organ and it is concluded that it is a key element in the magnetic sensor system of pigeons and migrating birds. The lagenal otolith in pigeons contains more iron than saccular and utricular otoliths. The function of the lagena of pigeons was ...
Yildirim Yeliz - - 2009
Cd, Ni, Cr, Zn, Cu and Pb concentrations of muscle tissue of 61 fish samples belonging to six fish species (Sparus auratus, Pomatomus saltatrix, Sarda sarda, Engraulis encrasicholus, Sander lucioperca, Scomber scombrus) retailed in Kayseri, Turkey were determined by flame atomic absorption spectrometry after wet digestion. Cd concentrations of at ...
Sano, Mitsuhiko
Population outbursts of the crown-of-thorns starfish, Acanthaster planci, have drastically altered communities in many coral reef areas of the Indo-west Pacific since the late 1960s. To understand the pattern of changes in fish communities on damaged coral colonies, direct observations and field experiments were carried out in inshore waters at ...
Sun Feei - - 2008
Chlorpyrifos, a widely used organophosphorus insecticide having many urban and agricultural pest control uses, is one of the major pesticides detected in Taiwan fishery products. Whereas previous studies examined, this study explored possible sources of chlorpyrifos residue, particularly in farmed fish. Eight hundred fourteen samples of marketable fish were analyzed ...
Gagliano Monica - - 2008
Vertebrate animals localize sounds by comparing differences in the acoustic signal between the two ears and, accordingly, ear structures such as the otoliths of fishes are expected to develop symmetrically. Sound recently emerged as a leading candidate cue for reef fish larvae navigating from open waters back to the reef. ...
Powell, JH
Tailings disposal from the Bougainville Copper Limited open-cut porphyry copper mine on Bougainville Island, Papua New Guinea (1972-1989) impacted the ichthyofauna of the Jaba River, one of the largest rivers on the island. To assess the 'extent of this impact, comparative freshwater ichthyological surveys were conducted in five rivers on ...
Serrano Roque - - 2008
The presence of organochlorine pesticides and polychlorinated biphenyls in wild and farmed gilthead sea bream (Sparus aurata) from the Western Mediterranean, Spain, is investigated. These pollutants were determined in white and red muscle and liver by gas chromatography coupled to tandem mass spectrometry. Contaminant profiles present in both wild and ...
Srivastava Rajesh K - - 2008
Synthetic pyrethroids are the recent major class of broad spectrum, photostable, organic insecticides used in agricultural, domestic and veterinary applications and now account for more than 30% of global insecticide use. Cypermethrin is metabolized and eliminated significantly more slowly by fish than by mammals or birds, which may explain this ...
Claudet Joachim - - 2008
Marine reserves are widely used throughout the world to prevent overfishing and conserve biodiversity, but uncertainties remain about their optimal design. The effects of marine reserves are heterogeneous. Despite theoretical findings, empirical studies have previously found no effect of size on the effectiveness of marine reserves in protecting commercial fish ...
Miller, Alan C
Miller AC.1982. Effects of differential fish grazing on the community structure of an intertidal reef flat at Enewetak Atoll, Marshall Islands. Pac Sci 36(4): 467-482. The high and middle intertidal zones of the northeastern portion ("barren") of the limestone bench on the windward side of Enewetak Island, Enewetak Atoll, Marshall ...
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