5%, used as a vehicle control, caused very little mortality among Artemia salina nauplii
Samples of newly hatched Artemia nauplii
, enriched Artemia and postlarvae were washed with distilled water and frozen (-20[degrees]C) until analysis.
Acute exposure test for Artemia nauplii
was carried out according to the OECD 202 test guide.
Although copepod nauplii
can serve as an important resource for larval fish less than eight mm TL (Bremigan et al.
In addition, it is unlikely that food availability or food quality altered results, as crabs in all treatments were fed identical diets of fresh and enriched Artemia nauplii
and were fed in excess to ensure that food availability did not limit growth.
About 10 to 15 nauplii
were added to each solution containing the samples, negative control, and positive control.
Melibe feeds differently than most other gastropods because it lacks a radula and uses a large, tentacle-lined oral hood to capture zooplankton, nauplii
, and other small organisms floating by in the water column (Hurst, 1968; Watson and Trimarchi, 1992).
The major groups of zooplankton were copepods rotifers sergestidae lucifer gastropod larvae bivalve larvae pelagic polychaetes nematodes crustacean nauplii
insects and mysidacea.
Abstract Larval snakehead Channa striatus were fed with three cladocerans (Ceriodaphnia cornuta, Moina micrura and Daphnia carinata) and Artemia nauplii
at the rate (500 Ind.
After 24 hours, the tubes were inspected using a magnifying glass and the number of survived nauplii
in each vial was counted and observations were recorded for each vial.
Five different types of zooplankton were counted: Rotifer, Cyclopoid, Calanoid, Nauplii
COPEPODA Cyclopidae Nauplii
+ + + Copepodite + + + DIPTERA Chaoboridae Chaoborus sp.