The trajectories of Kuhlia mugil fish swimming freely in a tank are analyzed in order to develop a model of spontaneous fish movement. The data show that Kuhlia mugil displacement is best described by turning speed and its auto-correlation. The continuous-time process governing this new kind of displacement is modelled by a stochastic differential equation of Ornstein-Uhlenbeck family: the Pers...

Modern fisheries have drastically changed the level and size dependence of mortality faced by fish populations: commercial fishing usually targets medium-sized and large individuals, which often are relatively invulnerable to natural predators. Life-history theory predicts that fish adapt to these changes through evolutionary alterations in their life histories. Experiments and models predict t...

Fish scales are among the structural materials in nature that inspiring design and development of “next-generation” engineering materials. possess a mineralization gradient divides their thickness into three unique regions, each containing characteristic structures properties. Here, experiments complementary numerical modeling performed to understand importance different geometrical mechanical ...

Some fish have scaly bodies and some do not. Scales on serve to protect the from parasitic infections. The fishes without scales mucus is antibacterial. dukang (Bagroides melapterus) one of endemic species Indonesia. This has no scales. produce more than other freshwater species. use as a wound medicine long been carried out by Pegagan Ilir ethnic. article reviews ethnic traditional for healing...

Collections of historical tissue samples from fish (e.g. scales and otoliths) stored in museums and fisheries institutions are precious sources of DNA for conducting retrospective genetic analysis. However, in some cases, only external tags used for documentation of spatial dynamics of fish populations have been preserved. Here, we test the usefulness of fish tags as a source of DNA for genetic...

This study, it was aimed to be enabling to use of fish scale as a bio-indicator for heavy metal pollution that is gradually increase in natural waters. For this purpose scaled carps, Cyprinus carpio (Linnaeus, 1758) were exposed to 7.5, 15, 30 and 60 μg L concentrations of trivalent chromium for 21 day and deformities appearing on the scales were examined under electron microscopy. It was found...

Movement of fish across habitat boundaries provides an important link between marine ecosystems such as mangroves, seagrass beds, and coral reefs, yet direct evidence of ontogenetic movements across these systems is scarce. We used acoustic telemetry to investigate movement patterns between bay nursery habitats and adult reef habitats by a common Caribbean fish (Lutjanus apodus). We hypothesize...

–Sound management and protection of the Great Lakes Basin’s abundant freshwater resources requires the ability to predict local habitat conditions and fish communities across regional spatial scales. In response to concerns over increased use and potential diversion of its plentiful freshwater resources, the State of Michigan enacted legislation in 2006 that required creation of an integrated a...