|
|
|
|
|
| Tetard, Stephane; Feunteun, Eric; Bultel, Elise; Gadais, Romain; Begout, Marie-laure; Trancart, Thomas; Lasne, Emilien. |
| Connectivity in aquatic systems is often related to abundance and permeability of physical barriers, such as dams, which delay or impede movements of biota with important consequences for aquatic biodiversity. Water quality may, however, also control connectivity between essential habitats. In macrotidal estuaries, Estuarine Turbidity Maxima (ETM) have a strong impact on water quality because of the low oxygen concentration occurring as a response to the related high bacterial and low photosynthetic activities. In this study, we assess Allis shad estuarine spawning migration in 2011 and 2012 in the Loire River (France) where the ETM occurs at spring and summer. Using an acoustic telemetry array, we show that trans-estuarine migration is inhibited during... |
| Tipo: Text |
Palavras-chave: Connectivity; Hypoxic conditions; Acoustic telemetry; Estuarine migration; Allis shad. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00301/41212/40365.pdf |
| |
|
|
| Gerard, Claudia; Verrez-bagnis, Veronique; Jerome, Marc; Lasne, Emilien. |
| The sea lamprey Petromyzon marinus, which is among the most phylogenetically ancient vertebrates, is a hematophagous ectoparasite that feeds on vertebrates and is considered vulnerable in Europe but is a pest in the North American Great Lakes. We conducted a literature review of helminth parasites of Petromyzon marinus and investigated postmetamorphic lampreys sampled in rivers and northeast Atlantic coastal waters (western France) during spawning migration. Based on the literature review, 16 helminth taxa have been recorded in Petromyzon marinus, among them 14 in North America but only 2 in Europe, with no species in common between these areas. Specific parasites are lacking, and helminth parasites recorded in Petromyzon marinus are mostly opportunistic... |
| Tipo: Text |
Palavras-chave: Sea lamprey; Helminth parasites; Unusual host; Accidental ingestion; Anisakis simplex sensu strict; Nematode. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00268/37964/36040.pdf |
| |
|
|
|
