Larvacea

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Related to larvacean: appendicularia

Larvacea

[lär′vā·shē·ə]
(invertebrate zoology)
A class of the subphylum Tunicata consisting of minute planktonic animals in which the tail, with dorsal nerve cord and notochord, persists throughout life.
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With their intricate passages and miniature nets, larvacean webs are one of the most complex external structures built by any organism.
Larvacean feeding nets have fascinated marine scientists for more than a century, and led to the discovery of the nanoplankton--extremely small drifting plants of the seas.
Diet of copepods (Scopalatum vorax) associated with mesopelagic detritus (giant larvacean houses) in Monterey Bay, California.
Amphipods and larvaceans (collected at all times), were fourth and fifth in abundance respectively.
Among other taxa present in both seasons, density and percent density of gastropods were similar between seasons, but larvaceans were less available in summer than in autumn.
Pollock also commonly consumed small amounts of other prey, such as larvaceans, gastropods, and chaetognaths.
4C) and was primarily due to declining percentages of small copepods and larvaceans and increasing percentages of large copepods and euphausiids.
Of the small and medium POP sampled at the north and south sites in August, there were no significant differences by numerical or weight proportions in the three main prey items consumed: large copepods, euphausiids, and larvaceans (P > 0.
Other zooplankton components included euphausiids, chaetognaths, Limacina pteropods, and larvaceans.
Using relatively crude equipment, he measured the average transparency of various dinoflagellates, siphonophores, copepods, and larvaceans and presented a model, which, unfortunately, was inaccurate, relating the measurements to sighting distance.