Thyroid status is related to migratory behavior in Anguilla anguilla glass eels
نویسندگان
چکیده
منابع مشابه
Glass eels (Anguilla anguilla) have a magnetic compass linked to the tidal cycle
The European eel (Anguilla anguilla) has one of the longest migrations in the animal kingdom. It crosses the Atlantic Ocean twice during its life history, migrating between the spawning area in the Sargasso Sea and Europe, where it is widely distributed. The leptocephalus larvae drift with the Gulf Stream and other currents for more than a year and metamorphose into glass eels when they arrive ...
متن کاملFishing mortality on silver eels , Anguilla anguilla ( L . ) , in Denmark
A total of 2198 silver eels were Carlin-tagged and released at two sheltered and one exposed site in the western Baltic Sea. A total of 547 tagged silver eels were recaptured, corresponding to recoverv rates from 19 to 38% at the different sites. The majoritv of the recaptured silver cds was reporred from wirhin a radius of 20 km and within a period of less than 16 days after release. There was...
متن کاملEndocrine control of Anguilla anguilla glass eel dispersal: effect of thyroid hormones on locomotor activity and rheotactic behavior.
Dispersal, one of the most important processes in population ecology, is an issue linking physiological and behavioral features. However, the endocrine control of animal dispersal remains poorly understood. Here, we tested whether and how thyroid hormones may influence dispersal in glass eels of Anguilla anguilla, by testing their influence on locomotor activity and rheotactic behavior. Glass e...
متن کاملTemporal patterns in the upstream migration of European glass eels (Anguilla anguilla) at the Couesnon estuarine dam
The temporal migration patterns of European glass eel Anguilla anguilla at the Couesnon estuarine dam (Mont-Saint-Michel Bay, France) were examined in winter and spring 2004 and 2005. The dam which is located close to the river mouth constitutes a major obstacle for upstreammigrating glass eels. The migration was observed at different temporal scales, from within individual tides to complete ti...
متن کاملThe potential reproductive contribution of Mediterranean migrating eels to the Anguilla anguilla stock
The European eel is a highly migratory fish. After the reproduction in the Sargasso Sea early larval-stages start a passive ocean migration towards European and Mediterranean continental waters. After several years as yellow eels, mature adults change to silver stage and then start their return trip. The trajectory of their backward migration is unknown, because of low probability of capturing ...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2004
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps282261