|
Lipkea
''Lipkea'' is a genus of stalked jellyfish. It is the only genus in the monotypic family Lipkeidae. ''Lipkea'' species lack tentacles at the end of their bell. Genera and Species According to the World Register of Marine Species, there are only three described species in this family and genus: *'' Lipkea ruspoliana'' Vogt, 1886 *'' Lipkea stephensoni'' Carlgren, 1933 *'' Lipkea sturdzi'' (Antipa, 1893) Distribution According to the World Register of Marine Species '' L. stephensoni'' is the only species known from the waters off the coast of South Africa. The other ''Lipkea'' species ('' Lipkea ruspoliana'' and '' Lipkea sturdzi'') are found in the mediterranean sea. It is likely that there are undescribed specimens of Lipkea. For instance the images in the gallery below show ''Lipkea'' with dense nematocyst A cnidocyte (also known as a cnidoblast) is a type of cell containing a large secretory organelle called a ''cnidocyst'', that can deliver a sting to other organisms a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lipkea Stephensoni
The bell trumpet jelly (''Lipkea stephensoni''), is a species of stalked jellyfish in the family Lipkeidae ''Lipkea'' is a genus of stalked jellyfish. It is the only genus in the monotypic family Lipkeidae. ''Lipkea'' species lack tentacles at the end of their bell. Genera and Species According to the World Register of Marine Species, there are only .... Description This small stalked jellyfish grows up to 1 cm across and is pale and transparent. Four distinct opaque white lines run down the bell and into the mouth, which is surrounded by four horseshoe-shaped gonads. The bell has opaque white spots. Several lobes extend from the margin of the bell. Distribution This stalked jellyfish has been found in Smitswinkel Bay off Cape Town in less than 10m of water. References Lipkeidae Animals described in 1933 {{Medusozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lipkea Ruspoliana
''Lipkea ruspoliana'' is a species of stalked jellyfish Stauromedusae are the stalked jellyfishes. They are the sole living members of the class Staurozoa and belong to the medusozoa subphylum of Cnidaria. They are unique among medusa jellyfish in that they do not have an alternation of polyp and med .... ''Lipkea'' species lack tentacles at the end of their bell. References Lipkeidae {{Medusozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. Phylogeneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour, or ecological niche. In addition, palaeontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. About 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomen". The first part of a binomen is the name of a genus to which the species belongs. The second part is called the specific name (zoology), specific name or the specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematocyst
A cnidocyte (also known as a cnidoblast) is a type of cell containing a large secretory organelle called a ''cnidocyst'', that can deliver a sting to other organisms as a way to capture prey and defend against predators. A cnidocyte explosively ejects the toxin-containing cnidocyst which is responsible for the stings delivered by a cnidarian. The presence of this cell defines the phylum Cnidaria, which also includes the corals, sea anemones, hydrae, and jellyfish. Cnidocytes are single-use cells that need to be continuously replaced. Structure and function Each cnidocyte contains an organelle called a cnidocyst, which consists of a bulb-shaped capsule and a hollow, coiled tubule that is contained within. Immature cnidocytes are referred to as cnidoblasts or nematoblasts. The externally oriented side of the cell has a hair-like trigger called a cnidocil, a mechano-chemical receptor. When the trigger is activated, the tubule shaft of the cnidocyst is ejected and, in the case ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
