), they prey on much smaller organisms, probably eggs and early larval stages of planktonic organisms.
Microsetella is known as a parasite of chaetognaths
chuni specimens had partially digested, large calanoid copepods, chaetognaths
, hyperiid amphipods, and euphausiids attached to their gastric cirri, suggesting that A.
Phylum Species Annelids Neanthes kerguelensis Aphroditidea sp Serula narconensis Lumbrineridea sp Oligochaetes Chaetognaths
Chaetognathe sp Crustaceans Euphausiids Decapods sp Copepods Coryceaus Cumacea sp Larvae of crustaceans Arthropods Serilis sp Pedunculata sp Natatolana sp Tanaids Tanaidacea sp Apseudomorpha sp Gastropod mollusks Cerithiopsidea sp Buccinidea sp Turridea sp Cancellariidea sp Nassariidae sp Epitoniidea sp Gasteropodea sp Enixotiophan sp Epoitonidea sp Fissurellidea sp Bivalve mollusks Crassatellidea sp Nuculana sp Bivalvia sp Crasostrea gasar Kidderia sp Euciroa sp Opistotranchia sp Cyaniidae sp Galeommatidea sp Limopsidea sp Cardiidea Gouldiopa sp Nematodes Priapulidea sp Sipunculidea sp Pennatulacea sp Platyhelminthes sp Broken eggs Fish?
As a result even the elements of originally organic composition, like the grasping spines of chaetognaths
, are often well preserved (Szaniawski 1982, 2002).
Such fine resolution enables detection of particles as small as a 100 [micro]m (e.g., diatoms), although the ability to clearly resolve particles is typically in the range of 700 [micro]m (i.e., small copepods and larvaceans) and larger sizes (e.g., larval fishes, chaetognaths
, and ctenophores).
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.
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., 1991).
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.