What's the difference between naiad and nymph?

Naiad


Definition:

  • (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.

Nymph


Definition:

  • (n.) A goddess of the mountains, forests, meadows, or waters.
  • (n.) A lovely young girl; a maiden; a damsel.
  • (n.) The pupa of an insect; a chrysalis.
  • (n.) Any one of a subfamily (Najades) of butterflies including the purples, the fritillaries, the peacock butterfly, etc.; -- called also naiad.

Example Sentences:

  • (1) A relationship between the level of sterility induced by juvenoids and reductions in nymph-to-adult ratios permitted formulation of a biological action threshold for regulating treatment.
  • (2) After molting, resulting nymphs (n = 74) were fed on susceptible mice.
  • (3) sp., described from wild-caught and laboratory-reared females, males, nymphs, and larvae parasitizing the Humboldt Penguin, Spheniscus humboldti Meyen, is the fifth species of the Ornithodoros (Alectorobius) capensis group to be recognized in the Neotropical Region.
  • (4) It was found to remain intact until at least 11, 30 and 10 days after repletion in larvae, nymphs and females, respectively.
  • (5) The mayfly nymphs, Habrophlebia lauta Eaton and H. fusca (Curtis) were found to serve as experimental intermediate hosts.
  • (6) Extremely high concentrations of Vg were observed in the hemolymph of female nymphs (fourth instar), particularly engorged nymphs, treated with CyM (10 micrograms).
  • (7) Nymphs produced by the interrupted larval feeding method feed well on cattle, in regard to timing of detachment and weight, compared with nymphs produced by interrupted feeding on rabbits.
  • (8) The accumulating process and concentration ratios of ingested blood meals in the larvae and nymphs of Amblyomma testudinarium, Haemaphysalis campanulata, H. concinna, H. formosensis, H. hystricis, H. kitaokai, the bisexual and parthenogenetic strains of H. longicornis, H. megaspinosa, and Ixodes persulcatus on rabbits and Argas japonicus on chickens were comparatively investigated.
  • (9) Last week we hatched our 13,000th baby nymph – that’s the number that hatched since 2003, when we hatched our first ones.
  • (10) In addition, fenoxycarb caused mortality in 59% of the nymphs treated on day 6.
  • (11) The percentage of nymphs infected correlated with the viremic titer on the final day of engorgement (the time of maximum blood uptake).
  • (12) Rates of infection were 5.4% in adults (n = 467) and 3.4% in nymphs (n = 289); 15.6% of clusters of unengorged larvae harbored B. burgdorferi, suggesting transovarial passage of the spirochete.
  • (13) Inputs to the model were the temporal patterns of recruitment of nymphs into the active class, mortality and successful acquisition of hosts by the ticks.
  • (14) The fatty acid synthetase was active from Nymph L stage.
  • (15) Amblyomma cohaerens nymphs, which had been collected as engorged larvae from African buffalo (Syncerus caffer) in the Mara region of Kenya, transmitted a theilerial parasite to a steer.
  • (16) In order to study schizogony and merozoite formation, D. variabilis nymphs were allowed to feed on domestic cats experimentally infected with C. felis, after which the molted adult ticks were fed on susceptible cats.
  • (17) Development of the protozoan parasite Nuttallia danii was observed in salivary glands which were extirpated from Hyalomma anatolicum excavatum nymphs, fed as larvae on infected gerbils and held in organ culture.
  • (18) Variation in temperature (4-40 degrees C) had a significant effect on moulting rate of the ticks and transmission of theilerial parasites from nymphs to resultant adults.
  • (19) A total of 317 ticks (202 nymphs and 115 adults) from three different sites were examined for the spirochaete Borrelia burgdorferi Johnson et al.
  • (20) In the Eastern Cape Province of South Africa, larvae and nymphs of Ablyomma marmoreum Koch occur in habitats in which there is tree cover and herbaceous ground cover.