(n.) A water nymph; one of the lower female divinities, fabled to preside over some body of fresh water, as a lake, river, brook, or fountain.
(n.) Any species of a tribe (Naiades) of freshwater bivalves, including Unio, Anodonta, and numerous allied genera; a river mussel.
(n.) One of a group of butterflies. See Nymph.
(n.) Any plant of the order Naiadaceae, such as eelgrass, pondweed, etc.
Example Sentences:
(1) The insects of the Order Odonata both naiads and adults may serve as the second intermediate host of some intestinal parasites in Thailand.
(2) Differences in oxygen consumption attributable to apparent specific dynamic action (SDA) were measured in relation to feeding level in the dragonfly naiad Somatochlora cingulata exposed to low pH and sublethal aluminum concentration plus low pH.
(3) Development of cercariae into infective metacercariae in dragon-fly naiads took 18 days.
(4) Metacercarial cysts were found in dragon-fly naiads (Tholymis tillarga and Tramea limbata) and aquatic bugs (Laccotrephes griseus and Ranatra elongata) collected from a stream.
(5) Overall, predation was maximal in young and mature rice, moderate in the submerged naiad vegetation, and minimal in areas of open water.
(6) However, no remains of mosquito larvae were detected in any of the specimens, even though mosquito larvae were observed as being continuously present in the pond sites where the naiad specimens were collected.
(7) Foregut contents of naiads of the damselfly species, Enallagma civile, collected from a permanent pond, were analyzed to determine the natural prey for immatures of this species.
(8) Corixid, cladoceran, ostracod and aquatic mite remains were found in some of the naiad specimens examined.
(9) The analyses revealed the naiads containing prey had fed predominantly on chironomid larvae.
(10) Although predator abundances differed in these studies, sometimes by an order of magnitude, the common predators colonized mesocosms in the following order: Triops, hydrophilid beetle larvae, dytiscid beetle larvae, mesoveliids, dragonfly and damselfly naiads, and notonectids.
(11) Based on relative abundance and correlation over time and space, zygopteran naiads were the most important predator at a stable foothill breeding site during 1985, and coleopteran larvae were the most important predator at ephemeral breeding sites sampled during 1986.
Undine
Definition:
(n.) One of a class of fabled female water spirits who might receive a human soul by intermarrying with a mortal.
Example Sentences:
(1) The main indications for diaphragmatic pacing are paralysis of respiration following high cervical spinal traumata and the chronic central hypoventilation syndrome (sleep apnoea of Undine's curse).
(2) Among the polydisperse RNA in the renal nuclei are small amounts of 45S RNA and large amounts of 32S RNA; the latter first appear when 18S RNA is detectable in the cytoplasm 10 min after administration of undine-H(3).