|
Crossota
''Crossota'' is a genus of hydrozoans of the family Rhopalonematidae. The genus comprises five species. Unlike most hydromedusae, these do not have a sessile stage. Rather, they spend their entire lives in the water column as plankton. The genus ''Crossota'' is widespread throughout the oceans. Species *''Crossota alba'' *''Crossota brunnea'' *''Crossota millsae'' *''Crossota norvegica'' *''Crossota rufobrunnea ''Crossota rufobrunnea'' is a species of hydrozoan. References Animals described in 2016 Rhopalonematidae {{hydrozoa-stub ...'' References World Register of Marine Species Rhopalonematidae Hydrozoan genera Bioluminescent cnidarians {{hydrozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crossota Norvegica
''Crossota norvegica'' is a species of hydrozoan in the family Rhopalonematidae. It is closely related to ''Crossota millsae'' and is found in the Arctic Ocean at depths below . ''Crossota norvegica'' is also known as the deep red jellyfish. This species is described as "alien-like" and is known for its vibrant red hue. It is a small cnidarian, reaching only up to 2 cm in its body size. Description Unlike other cnidarians, ''Crossota norvegica'' lives its entire life in the planktonic stage or the planula stage, instead of experiencing both the sessile stage and planula stage. Another unique trait off this species is that it does not develop into a polyp. Polyps typically produce the sexual reproduction gametes of cnidarians by budding. These polyps are stationary and non-moving forms of cnidarians (The Columbia Encyclopedia). Others will reproduce sexually in the medusa stage, where they are free-swimming cnidarians. During this stage they are typically very small, around 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crossota Brunnea
''Crossota'' is a genus of hydrozoans of the family Rhopalonematidae. The genus comprises five species. Unlike most hydromedusae, these do not have a sessile stage. Rather, they spend their entire lives in the water column as plankton. The genus ''Crossota'' is widespread throughout the oceans. Species *''Crossota alba'' *''Crossota brunnea'' *''Crossota millsae'' *''Crossota norvegica'' *''Crossota rufobrunnea ''Crossota rufobrunnea'' is a species of hydrozoan. References Animals described in 2016 Rhopalonematidae {{hydrozoa-stub ...'' References World Register of Marine Species Rhopalonematidae Hydrozoan genera Bioluminescent cnidarians {{hydrozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crossota Alba
''Crossota alba'' is a species of hydrozoan in the family Rhopalonematidae. this species does not have sessile stage as other hydromedusae Hydrozoa (hydrozoans; ) are a taxonomic class of individually very small, predatory animals, some solitary and some colonial, most of which inhabit saline water. The colonies of the colonial species can be large, and in some cases the specialized .... Crossota is spread all over the ocean and lives their life in water as plankton. Crossota alba are commonly distributed in the west coast waters of India.Santhakumari, V., and V. Nair. Distribution of Hydromedusae from the exclusive economic zone of the west and east coast of India. Indian Journal of Marine Sciences 28:150-157 References Rhopalonematidae Animals described in 1913 {{hydrozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crossota Millsae
''Crossota millsae'' is a species of deep-sea hydrozoan.Thuesen, E.V., 2003. ''Crossota millsae'' (Cnidaria: Trachymedusae: Rhopalonematidae), a new species of viviparous hydromedusa from the deep sea off California and Hawaii. ''Zootaxa'', 309: 1-12 http://www.mapress.com/zootaxa/2003f/zt00309.pdf These small ocean-dwelling creatures are bioluminescent; the light emitted by these jellyfish serves as a defense or warning to other creatures. Males and females have both been described, and it reproduces sexually. They are viviparous and females brood baby medusae attached to the gastric canals inside the sub-umbrellar space. Distribution ''Crossota millsae'' was first described from the Pacific Ocean off Hawaii and California. It was subsequently found in the Arctic Ocean and in Guayanilla Canyon off Puerto Rico. NOAA researchers who filmed this species in 2018 near Puerto Rico called it a "psychedelic" jellyfish. It lives below 1 km depth in all four regions. Its highest ab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crossota Rufobrunnea
''Crossota rufobrunnea'' is a species of hydrozoan Hydrozoa (hydrozoans; ) are a taxonomic class of individually very small, predatory animals, some solitary and some colonial, most of which inhabit saline water. The colonies of the colonial species can be large, and in some cases the specialized .... References Animals described in 2016 Rhopalonematidae {{hydrozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhopalonematidae
Rhopalonematidae is a family of hydrozoans. The family comprises 15 genera and 36 species. Genera *'' Aglantha'' (4 species) *'' Aglaura'' (monotypic – ''Aglaura hemistoma'') *'' Amphogona'' (3 species) *'' Arctapodema'' (4 species) *'' Benthocodon'' (2 species) *'' Colobonema'' (3 species) *''Crossota ''Crossota'' is a genus of hydrozoans of the family Rhopalonematidae. The genus comprises five species. Unlike most hydromedusae, these do not have a sessile stage. Rather, they spend their entire lives in the water column as plankton. The genus ...'' (5 species) *'' Pantachogon'' (3 species) *'' Persa'' (monotypic – ''Persa incolorata'') *'' Ransonia'' (monotypic – ''Ransonia krampi'') *'' Rhopalonema'' (2 species) *'' Sminthea'' (2 species) *'' Tetrorchis'' (monotypic – ''Tetrorchis erythrogaster'') *'' Vampyrocrossota'' (monotypic – ''Vampyrocrossota childressi'') *'' Voragonema'' (4 species) References * Schuchert, Peter (2005)The Hydrozoa Directory†Retriev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrozoans
Hydrozoa (hydrozoans; ) are a taxonomic class of individually very small, predatory animals, some solitary and some colonial, most of which inhabit saline water. The colonies of the colonial species can be large, and in some cases the specialized individual animals cannot survive outside the colony. A few genera within this class live in freshwater habitats. Hydrozoans are related to jellyfish and corals and belong to the phylum Cnidaria. Some examples of hydrozoans are the freshwater jelly (''Craspedacusta sowerbyi''), freshwater polyps ('' Hydra''), ''Obelia'', Portuguese man o' war (''Physalia physalis''), chondrophores (Porpitidae), "air fern" (''Sertularia argentea''), and pink-hearted hydroids (''Tubularia''). Anatomy Most hydrozoan species include both a polypoid and a medusoid stage in their lifecycles, although a number of them have only one or the other. For example, ''Hydra'' has no medusoid stage, while '' Liriope'' lacks the polypoid stage. Polyps The hydroid fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydromedusae
Hydrozoa (hydrozoans; ) are a taxonomic class of individually very small, predatory animals, some solitary and some colonial, most of which inhabit saline water. The colonies of the colonial species can be large, and in some cases the specialized individual animals cannot survive outside the colony. A few genera within this class live in freshwater habitats. Hydrozoans are related to jellyfish and corals and belong to the phylum Cnidaria. Some examples of hydrozoans are the freshwater jelly (''Craspedacusta sowerbyi''), freshwater polyps ('' Hydra''), ''Obelia'', Portuguese man o' war (''Physalia physalis''), chondrophores (Porpitidae), "air fern" (''Sertularia argentea''), and pink-hearted hydroids (''Tubularia''). Anatomy Most hydrozoan species include both a polypoid and a medusoid stage in their lifecycles, although a number of them have only one or the other. For example, ''Hydra'' has no medusoid stage, while '' Liriope'' lacks the polypoid stage. Polyps The hydroid fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sessility (zoology)
Sessility is the biological property of an organism describing its lack of a means of self-locomotion. Sessile organisms for which natural ''motility'' is absent are normally immobile. This is distinct from the botanical concept of sessility, which refers to an organism or biological structure attached directly by its base without a stalk. Sessile organisms can move via external forces (such as water currents), but are usually permanently attached to something. Organisms such as corals lay down their own substrate from which they grow. Other sessile organisms grow from a solid such as a rock, dead tree trunk, or a man-made object such as a buoy or ship's hull. Mobility Sessile animals typically have a motile phase in their development. Sponges have a motile larval stage and become sessile at maturity. Conversely, many jellyfish develop as sessile polyps early in their life cycle. In the case of the cochineal, it is in the nymph stage (also called the crawler stage) that the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrozoan Genera
Hydrozoa (hydrozoans; ) are a taxonomic class of individually very small, predatory animals, some solitary and some colonial, most of which inhabit saline water. The colonies of the colonial species can be large, and in some cases the specialized individual animals cannot survive outside the colony. A few genera within this class live in freshwater habitats. Hydrozoans are related to jellyfish and corals and belong to the phylum Cnidaria. Some examples of hydrozoans are the freshwater jelly (''Craspedacusta sowerbyi''), freshwater polyps ('' Hydra''), ''Obelia'', Portuguese man o' war (''Physalia physalis''), chondrophores (Porpitidae), "air fern" (''Sertularia argentea''), and pink-hearted hydroids (''Tubularia''). Anatomy Most hydrozoan species include both a polypoid and a medusoid stage in their lifecycles, although a number of them have only one or the other. For example, ''Hydra'' has no medusoid stage, while '' Liriope'' lacks the polypoid stage. Polyps The hydroid fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Hydromedusae")
.JPG "Click for more on -> Sessility (zoology)")