Coral reefs are one of the most diverse habitats in the world, yet our understanding of the processes affecting their biodiversity is limited. At the local scale, cleaner fish are thought to have a disproportionate effect, in relation to their abundance and size, on the activity of many other fish species, but confirmation of this species' effect on local fish diversity has proved elusive. The ...

The present work describes the development and validation of Artificial Neural Networks (ANN) by comparison with classical and more advanced parametric and nonparametric statistical modeling methods such as Multiple Regression (MR), Generalized Additive Models (GAM), and Alternating Conditional Expectations (ACE) to estimate spatial distribution of fish in a mesotrophic reservoir. The modeling ...

the karoun river is major source of water for warm water fish culture industry in southwest of iran. the aim of the present study was to investigate the distribution of mercury in tissues of marketable common carp and in bottom sediments of fish farms in khouzestan province. this study was carried out on 45 fish farms that are located on the bank of the karoun river in khouzestan province, sout...

background: anisakid nematodes are common parasites of fish, mammals, fish-eating birds, and reptiles with a worldwide distribution, causing diseases in human, fish and important economic losses. methods: a preliminary epidemiological study was carried out on anisakid nematodes larvae in some commercially important fish species to evaluate the anisakid nematode larvae from greater lizardfish, (...

Arachidonic [ARA, 20:4(n-6)], eicosapentaenoic [EPA, 20:5(n-3)], and docosahexaenoic acids [DHA, 22:6(n-3)] occur in the diet in animal tissue lipids, play important roles in human development and health, but have interactive and opposing functions. Meat and poultry have higher ARA and fish are richer in EPA and DHA. National databases were recently revised to include complete data on ARA in fo...

The effect of fish oil administration on platelet function was studied in eight normal individuals, four men and four women, who received fish oil equivalent to 6 g eicosapentaenoic acid per day for a period of 25 days. Platelet aggregation, platelet adhesion, phospholipid and fatty acid distribution were measured at periodic intervals before, during, and after the period of fish oil administra...

Occupancy models using incidence data collected repeatedly at sites across the range of a population are increasingly employed to infer patterns and processes influencing population distribution and dynamics. While such work is common in terrestrial systems, fewer examples exist in marine applications. This disparity likely exists because the replicate samples required by these models to accoun...

Compared to the monitoring of water quality and macroinvertebrates, relatively little attention has been directed towards community-based fish monitoring. However, fish studies are important since fish play a pivotal role in freshwater food webs and fish data provide the basis of several routinely-used indicators of stream health. Fish also have very strong public appeal and play a significant ...

We present results from a study where we segment fish in images captured within fish cages. The ultimate goal is to use this information to extract the weight distribution of the fish within the cages. Statistical shape knowledge is added to a Mumford-Shah functional defining the image energy. The fish shape is represented explicitly by a polygonal curve, and the energy minimization is done by ...

This paper introduces a technique which can automatically monitor the behavior of fish school in images in real-time. Results on the activity level, distribution and social interaction within the school are generated based on the spatial information extracted from captured images. The fish behaviors we observe here are selected based on a list of responses which fish exhibit when they are in di...