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hydrozoa    
n. 水螅虫类

水螅虫类

Hydrozoa
n 1: coelenterates typically having alternation of generations;
hydroid phase is usually colonial giving rise to the
medusoid phase by budding: hydras and jellyfishes [synonym:
{Hydrozoa}, {class Hydrozoa}]

Hydrozoa \Hy`dro*zo"a\, n. pl. [NL., fr. E. hydra Gr. zo^,on
an animal.] (Zool.)
The Acaleph[ae]; one of the classes of c[oe]lenterates,
including the Hydroidea, Discophora, and Siphonophora.
[1913 Webster]


Hydrozoon \Hy`dro*zo"["o]n\, n.; pl. L. {Hydrozoa}, E.
{Hydrozo["o]ns}. [NL.] (Zool.)
One of the Hydrozoa.
[1913 Webster]


{Molluscoidea}, including Brachiopoda and Bryozoa. {Mollusca},
including Cephalopoda, Gastropoda, Pteropoda, Scaphopoda,
Lamellibranchiata or Acephala. {Echinodermata}, including
Holothurioidea, Echinoidea, Asterioidea, Ophiuroidea, and
Crinoidea. {C[oe]lenterata}, including {Anthozoa} or {Polyps},
{Ctenophora}, and {Hydrozoa} or Acalephs. {Spongiozoa} or
{Porifera}, including the sponges.
{Protozoa}, including {Infusoria} and {Rhizopoda}. For
definitions, see these names in the Vocabulary.
[1913 Webster] Animalcular


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  • Hydrozoa - Wikipedia
    Hydrozoa (hydrozoans; from Ancient Greek ὕδωρ (húdōr; "water") and ζώα (zóa; "animals")) is a taxonomic class of individually very small, predatory animals, some solitary and some colonial, most of which inhabit saline water
  • ADW: Hydrozoa: INFORMATION
    The Hydrozoa is a subgroup of cnidarians containging approximately 3700 species It is a diverse group with a variety of life cycles, growth forms, and specialized structures Like many cnidarians, hydrozoans have both polyp and medusa stages in their life cycle
  • Hydrozoa - The World Hydrozoa Database - World Register of Marine Species
    The World Hydrozoa Database includes all extant hydrozoan species and is intended to act as a tool for anyone looking for taxonomic information, both specialists and non-specialists alike
  • Hydrozoans (Class Hydrozoa) - iNaturalist
    Hydrozoa (hydrozoans, from ancient Greek ὕδρα, hydra, "sea serpent" and ζῷον, zoon, "animal") are a taxonomic class of individually very small, predatory animals, some solitary and some colonial, most living in salt water
  • Hydrozoa - Simple English Wikipedia, the free encyclopedia
    The Hydrozoa are a class of the phylum Cnidaria They are small predatory animals which mostly live in the sea Their basic life form is the polyp Some species live singly, others live in colonies Their classification and evolutionary relationships are still under discussion The hydroids may be best understood by taking some examples
  • Hydrozoa - Encyclopedia. com
    Hydrozoa (phylum Coelenterata, class Hydrozoa) are coelenterates that are closely related to the hydra,sea anemones, corals, and jellyfish Although a large majority of these species are common and widespread, they are often overlooked, as they are all small animals
  • Hydrozoa - Animalia
    Hydrozoa (hydrozoans; from Ancient Greek ὕδωρ (húdōr) 'water', and ζῷον (zôion) 'animal') is a taxonomic class of individually very small, predatory animals, some solitary and some colonial, most of which inhabit saline water
  • Hydrozoa - Species, Colonial, Medusoid, and Sessile - JRank
    Hydrozoa (phylum Coelenterata, class Hydrozoa) are coelenterates that are closely related to the hydra, sea anemones, corals, and jellyfish Although a large majority of these species are common and widespread, they are often overlooked, as they are all small animals
  • Cnidaria - Hydrozoa - MESA
    The 2,700 species of Hydrozoans are related to jellyfish and corals and are on of the main groups of the Cnidaria They are very small predators some of which are solitary and most live in colonies Most Hydrozoans live in saltwater but some species, like Hydra, are found in freshwater
  • Hydrozoa - an overview | ScienceDirect Topics
    Hydrozoa are top predators in the marine environment, feeding on the eggs and larvae of almost all animals, including fish 4 When abundant populations establish, they can exert strong pressures on species of commercial importance, decimating recruitment





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