Ribosomal RNA gene sequences confirm that protistan endoparasite of larval cod Gadus morhua is Ichthyodinium sp.
نویسندگان
چکیده
منابع مشابه
Baltic larval cod Gadus morhua are infested with a protistan endoparasite in the yolk sac
A protistan endoparasite was d~scovered in the yolk of embryos and larvae of cod Gadus morhua L. from the Baltic. The prevalence of infestation ranged from 0 to 30 ":>. Two stages of the parasite were identified under transmiss~on electron microscopy. One stage was apparently mononucleated; the other stage was multinucleated and seemed to be b reak~ng-up into numerous, mononucleated organisms. ...
متن کاملClick sounds produced by cod (Gadus morhua).
Conspicuous sonic click sounds were recorded in the presence of cod (Gadus morhua), together with either harp seals (Pagophilus groenlandicus), hooded seals (Cystophora cristata) or a human diver in a pool. Similar sounds were never recorded in the presence of salmon (Salmo salar) together with either seal species, or from either seal or fish species when kept separately in the pool. It is conc...
متن کاملEffects of ocean acidification on the calcification of otoliths of larval Atlantic cod Gadus morhua
The growth and development of the aragonitic CaCO3 otoliths of teleost fish could be vulnerable to processes resulting from ocean acidification. The potential effects of an increase in atmospheric CO2 on the calcification of the otoliths were investigated by rearing Atlantic cod Gadus morhua L. larvae in 3 pCO2 concentrations — control (370 μatm), medium (1800 μatm) and high (4200 μatm) — from ...
متن کاملModeling growth of larval cod (Gadus morhua) in large-scale seasonal and latitudinal environmental gradients
Spawning of Northeast Arctic (NA) cod stretches from late February to early May over 1500km along the Norwegian coast. Hatching occurs from late March to late May, a period when the number of daylight hours increases from 11 to 17. Larval feeding opportunities are constrained by prey abundance and environmental variables such as light, while temperature determines the maximum growth potential. ...
متن کاملGrowth pattern and growth dependent mortality of larval and pelagic juvenile North Sea cod Gadus morhua
We investigated growth patterns and evidence of growth dependent survival for a population of Atlantic cod Gadus morhua using analysis of their otolith microstructure. Central concentrations of a population of cod larvae and juveniles in the north-eastern North Sea were sampled twice (in April and May 2001), and larval/juvenile growth history from each of the sampling sequences was outlined. Gr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Diseases of Aquatic Organisms
سال: 2010
ISSN: 0177-5103,1616-1580
DOI: 10.3354/dao02156