A stage-structured model to predict the effect of temperature and salinity on glass eel Anguilla anguilla pigmentation development

• Published in: Journal of Fish Biology
• Main Authors: Briand, C, Fatin, D, Lambert, P., CICCOTTI, ELEONORA
• Other Authors: Ciccotti, E, Lambert, P
• Format: Article in Journal/Newspaper
• Language: English
• Published: BLACKWELL PUBLISHING, 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND 2005
• Subjects: Anguilla anguilla; European eel; Glass eel; Pigment stage; Salinity; Temperature; sCOPUS Indexed keywords GEOBASE Subject Index: developmental stage; eel; environmental monitoring; pigment; resident population; simulation temperature effect Regional Index: Eurasia Europe France Vilaine River Western Europe Species Index: Anguilla anguilla; Settore BIO/07 - ECOLOGIA
• Online Access: http://hdl.handle.net/2108/38052; https://doi.org/10.1111/j.0022-1112.2005.00798.x

The pigmentation development process of glass eels Anguilla anguilla from stage V-B to VIA3 was modelled by gamma cumulative functions. These functions varied with respect to the factors temperature and salinity whose effects were adjusted by beta functions. Temperature was shown to accelerate pigmentation, while salinity acted as a secondary factor slowing down the pigmentation. The model fits the development of 15 samples kept at various temperatures and salinities in the Vilaine River, as well as samples monitored at other dates and places in Europe. It allows the prediction of the duration of estuarine residency for glass eels, in winter and spring, in the Atlantic estuaries.