<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Newly pigmented glass-eels were kept in a cold water quarantine, before being exposed to increased water temperature and weaned with cod roe and commercial dry feed. The otoliths started to grow before fish growth was observed. As a consequence, the relative otolith size increased. This increase was higher at higher temperature. During the first period with significant eel growth, no further change in the otolith/fish size ratio was observed. Initially, the otolith size was not correlated to fish size, but a positive correlation occurred in growing elvers. The results are discussed with reference to variation in relative otolith size of larger eels. As otoliths have frequently been used in back-calculation of previous eel size, further studies on factors determining otolith growth are suggested.</p></abstract>

Newly pigmented glass-eels were kept in a cold water quarantine, before being exposed to increased water temperature and weaned with cod roe and commercial dry feed. The otoliths started to grow before fish growth was observed. As a consequence, the relative otolith size increased. This increase was higher at higher temperature. During the first period with significant eel growth, no further change in the otolith/fish size ratio was observed. Initially, the otolith size was not correlated to fish size, but a positive correlation occurred in growing elvers. The results are discussed with reference to variation in relative otolith size of larger eels. As otoliths have frequently been used in back-calculation of previous eel size, further studies on factors determining otolith growth are suggested.

Note on otolith growth in elvers, Anguilla anguilla (L.), and the relative otolith size during somatic growth

Institute of Freshwater Research, S-178 93 Drottningholm, Sweden

Fisheries & Aquatic Life

Newly pigmented glass-eels were kept in a cold water quarantine, before being exposed to increased water temperature and weaned with cod roe and commercial dry...

Note on otolith growth in elvers, Anguilla anguilla (L.), and the relative otolith size during somatic growth

Publié en ligne: 20 nov. 2012

Pages: 207 - 214

DOI: https://doi.org/10.2478/v10086-012-0026-y

Mots clés
eel elvers, otolith growth, relative otolith size

This content is open access.

Note on otolith growth in elvers, Anguilla anguilla (L.), and the relative otolith size during somatic growth

Publié en ligne: 20 nov. 2012

Pages: 207 - 214

DOI: https://doi.org/10.2478/v10086-012-0026-y

Mots cléseel elvers, otolith growth, relative otolith size

This content is open access.

Mots clés
eel elvers, otolith growth, relative otolith size