Fish migration

Abstract

Migracija riba je važan i sastavni dio života riba. Ona može biti iz slatke vode u more ili iz mora u slatke vode. One su potaknute potrebom za parenjem i osnivanjem pomlatka. Pomoću mnogih prirodnih pojava sele se iz jednog staništa u drugo i pritom su vođene mirisnim podražajima, nebeskim i geomagnetskim tragovima koje im pomažu i pri povratku kući. Migracija riba nije bitna samo za znanstvenike koji žele bolje shvatiti biologiju vrsta koje migriraju već i za ribare koji svoje putove usmjeravaju upravo prema putovima migracije riba. U ovome radu izložen je pregled migracijskih tipova i nekih poznatih vrsta te njihovih migratornih specifičnosti. Osim toga, predstavljene su neke uobičajene tehnike istraživanja migracija riba kao kratak opis fizioloških promjena.Migration of fish is an important and integral part of the life of fish. It can be from fresh water into the sea or from sea to fresh water. They are encouraged by the need for breeding and the establishment of youth branches. With many natural phenomena are moving from one habitat to another guided by olfactory stimulations, air and geomagnetic traces that help them and at returning to home. Migration of fish is not only essential for scientists who want to better understand the biology of species which migrate, but for fishermen who direct their paths just to fish migration routes. In this work is presented an overview of types of migration and some known species and their migratory characteristics. In addition, presented are some common techniques of research fish migration as a brief description of the physiological changes