Chaetognatha

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Related to chaetognaths: phylum Chaetognatha, arrow worms, Ctenophores
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Noun1.Chaetognatha - arrowworms: a group of small active transparent marine wormsChaetognatha - arrowworms: a group of small active transparent marine worms
animal kingdom, Animalia, kingdom Animalia - taxonomic kingdom comprising all living or extinct animals
arrowworm, chaetognath - any worm of the Chaetognatha; transparent marine worm with horizontal lateral and caudal fins and a row of movable curved spines at each side of the mouth
genus Sagitta - chief genus of Chaetognatha including the largest arrowworms
genus Spadella - marine worms resembling the sagittas but with a broader body and only one pair of lateral fins
phylum - (biology) the major taxonomic group of animals and plants; contains classes
References in periodicals archive ?
chaetognaths), they prey on much smaller organisms, probably eggs and early larval stages of planktonic organisms.
Microsetella is known as a parasite of chaetognaths (Huys 2016).
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.
Chaetognaths are relatively small (2 to 120 mm) predatory worms that are abundant from the tropics to polar regions (Bone et al., 1991).
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.