Eight groups accounted for 95% of total abundance both in January (copepods, chaetognaths
, euphausiids, amphipods, polychaetes, pteropods, fish larvae and decapods) and May (copepods, amphipods, chaetognaths
, euphausiids, decapods, pteropods, fish larvae and gasteropods).
A structural study of these fossils is necessary to obtain a better knowledge and understanding of the early evolution of conodonts and chaetognaths
Plankton samples were comprised of primarily crustaceans (copepods, amphipods, euphausiids, and decapod (brachyuran, pagurid, caridean) larvae) and chaetognaths
with some polychaetes, gastropods, cnidarians, echinoderm larvae, and fish larvae and eggs; no red, blue, or golden king crab larvae were present.
They feed upon crustaceans, mollusks, chaetognaths
, cnidarians and pelagic fish such as engraulids and clupeids, and are prey of sharks, marlins and other large predators (Bernal-Ornelas et al.
Didymozoid Monilicaecum type trematodes in chaetognaths
from Mexican Caribbean Sea.
They seek plankton patches dominated by tiny crustaceans--shrimp, copepods--and predatory worms called chaetognaths
are relatively small (2 to 120 mm) predatory worms that are abundant from the tropics to polar regions (Bone et al.
are also common components of the BMLC zooplankton assemblage.
interruptus eat large food items: fish larvae, chaetognaths
The tendency observed in the North Atlantic is repeated in other oceans, although in the tropical areas of the Pacific and Indian oceans the biomass of krill is greater, and in addition, other groups, such as amphipods, chaetognaths
, cnidarians, and pteropod mollusks each represent about 5% of the total biomass.
(Reeve and Cosper 1975), scleractinian corals (Heyward and Babcock 1986), and bivalves (Sastry 1979).
Some examples include arrow worms (or chaetognaths
- see photo above) and amphipods (photo at right), which are voracious predators on copepods and larvae of larger species.