If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

The influence of temperature on the stage at hatch of laboratory reared Gadus morhua and implications for comparisons of length and morphology

$48.00 plus tax (Refund Policy)

Download / Buy Article:

Abstract:

A staging table for yolk‐sac larvae of Atlantic cod Gadus morhua was developed and applied to determine the development stage at hatch. Larvae (n = 20) were sampled during the period from 50% hatch to first‐feeding from four temperature treatments (c. 2, 4, 8 and 12° C). Data recorded included standard length, development stage, yolk‐sac area and evidence of feeding by larvae. The results indicated that the stage of development at hatch was positively correlated to larval size. Furthermore, developmentally based changes in morphology shortly after hatch reduced much of the initial difference in size, although some difference still existed. No relationship between size at hatch and the incidence of first‐feeding larvae was found. Based on these observations, it is recommended that the development stage of hatching larvae be reported in studies investigating size and morphological differences when observing individual larval fish that originate from different populations, batches or species.

Keywords: Atlantic cod; batch comparisons; length; morphology; stage; temperature

Document Type: Regular Paper

DOI: http://dx.doi.org/10.1111/j.0022-1112.2006.00857.x

Affiliations: School of Marine Sciences, University of Maine, 214 Libby Hall, Orono, Maine, 04469, U.S.A.

Publication date: January 1, 2006

Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more