Otolith microchemistry inSicydium punctatum: indices of environmental condition changes after recruitment
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چکیده
منابع مشابه
Unravelling the life history of Amazonian fishes through otolith microchemistry
Amazonian fishes employ diverse migratory strategies, but the details of these behaviours remain poorly studied despite numerous environmental threats and heavy commercial exploitation of many species. Otolith microchemistry offers a practical, cost-effective means of studying fish life history in such a system. This study employed a multi-method, multi-elemental approach to elucidate the migra...
متن کاملOtolith microchemistry of tropical diadromous fishes: spatial and migratory dynamics.
Otolith microchemistry was applied to quantify migratory variation and the proportion of native Caribbean stream fishes that undergo full or partial marine migration. Strontium and barium water chemistry in four Puerto Rico, U.S.A., rivers was clearly related to a salinity gradient; however, variation in water barium, and thus fish otoliths, was also dependent on river basin. Strontium was the ...
متن کاملMovement Patterns of American Eels in an Impounded Watercourse, as Indicated by Otolith Microchemistry
—Otolith Sr:Ca ratios were used to determine migrational histories of American eels Anguilla rostrata in an eastern Canadian coastal stream that is impounded at the head of tide. American eels sampled from the estuary were smaller (41.0 6 9.3 cm [mean 6 SD], N 5 324) and younger (ages 1–4) than those in a freshwater pond (65.0 6 7.5 cm, N 5 265; ages 11–26) 2.5 km upstream of the head of tide. ...
متن کاملConnectivity between Migrating and Landlocked Populations of a Diadromous Fish Species Investigated Using Otolith Microchemistry
Smelt Osmerus eperlanus has two different life history strategies in The Netherlands. The migrating population inhabits the Wadden Sea and spawns in freshwater areas. After the closure of the Afsluitdijk in 1932, part of the smelt population became landlocked. The fresh water smelt population has been in severe decline since 1990, and has strongly negatively impacted the numbers of piscivorous ...
متن کاملMigratory behaviour and habitat use by American eels Anguilla rostrata as revealed by otolith microchemistry
The environmental history of American eels Anguilla rostrata from the East River, Nova Scotia, was investigated by electron microprobe analysis of the Sr:Ca ratio along transects of the eel otolith. The mean (±SD) Sr:Ca ratio in the otoliths of juvenile American eels was 5.42 × 10–3 ± 1.22 × 10–3 at the elver check and decreased to 2.38 × 10–3 ± 0.99 × 10–3 at the first annulus for eels that mi...
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ژورنال
عنوان ژورنال: Aquatic Living Resources
سال: 2011
ISSN: 0990-7440,1765-2952
DOI: 10.1051/alr/2011137