Ecological Groups of the Daubed Shanny <Emphasis Type="Italic">Leptoclinus maculatus</Emphasis> (Fries, 1838), an Arcto-boreal Species,Regarding Growth and Early Development |
| |
Authors: | S N Pekkoeva S A Murzina E P Ieshko Z A Nefedova S Falk-Petersen J Berge O Lonne N N Nemova |
| |
Institution: | 1.Institute of Biology, Karelian Scientific Center,Russian Academy of Sciences,Petrozavodsk,Russia;2.Akvaplan-niva AS, Fram Centre,Troms?,Norway;3.The Arctic University of Norway (UiT),Troms?,Norway;4.The University Centre in Svalbard (UNIS),Longyearbyen,Norway |
| |
Abstract: | The patterns of growth and development have been studied in L. maculatus early life stages of different ecological groups (pelagic and demersal) from Kongsfjorden and Billefjorden (the northwestern coast of West Spitsbergen). It has been found that the growth rate of larvae markedly increases by age 2+ (stage L2), which is due to their transition to exogenous feeding. Consideration is given to changes in the length and condition of the lipid sac (a provisory organ) in the period of its formation, growth, and resorption in the course of ontogeny. The lipid sac reaches the maximum size at stage L4* and is resorbed at stage L5. Analysis of individual variation in the size and body weight of fish early life stages provides the possibility to evaluate the adaptation capacity of a species under specific conditions of the Arctic. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|