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Bullactidae
Haminoeidae, commonly known as the haminoeid bubble snail family, is a taxonomic family of sea snails, marine opisthobranch gastropod mollusks in the superfamily Haminoeoidea. The name of this family has long been controversial, and used to be Atyidae or Atydidae. Another, but incorrect, spelling was Haminaeidae (See (ICZN) 2000. Opinion 1942). A number of genera have been proposed for this family, but the species are hard to identify (or sometimes impossible to identify) by looking only at the external characteristics. Until the internal anatomy of 'wet' specimens has been fully described, the status of many of the genera listed here is uncertain. Distribution These bubble snails occur in all warm or temperate seas. Habitat These are sand dwellers or they live on muddy bottoms, in bays, estuaries, and close to the shore in tidepools. Description of the live animal These are colorful snails, that can partially take the color of the sea floor. Their large cephalic shield is r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haminoeoidea
Haminoeoidea is a Taxonomy (biology), taxonomic Taxonomic rank, superfamily of small sea snails or bubble shells, marine (ocean), marine opisthobranch gastropod mollusks in the clade Cephalaspidea, the headshield slugs and bubble snails. These cephalaspideans do have distinct Anatomy, anatomical and Morphology (biology), morphological characteristics, but unfortunately many species were described only from empty gastropod shell, shells. For proper clarification of the taxonomy, those species still need the research necessary to provide a good description of the external and internal anatomy of the living animal. Description of live animal The soft parts of the animals can retract completely or partially into their shells, and yet this offers them scant protection, because the aperture (mollusc), aperture is rather wide and there is no Operculum (gastropod), operculum. Furthermore, the shell is very fragile and can easily be crushed by a predator. The cephalic shield of most spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haminoea
''Haminoea'' is a genus of medium-sized sea snails or bubble snails, marine (ocean), marine opisthobranch gastropod molluscs in the family (biology), family Haminoeidae, the haminoea bubble snails, part of the clade Cephalaspidea, the headshield slugs and bubble snails.Bouchet, P.; Gofas, S. (2012). Haminoea. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=138054 on 2012-06-06 Systematics Three different spellings (''Haminoea, Haminea, Haminaea'') were used for this genus over two hundred years. The International Code of Zoological Nomenclature, ICZN finally made a decision that the correct spelling is ''Haminoea''. Oskars et al. (2019) restricted ''Haminoea'' to species from the Atlantic and eastern Pacific, and resurrected ''Haloa (gastropod), Haloa'' and ''Lamprohaminoea'' for Indo-Pacific species.Oskars, T. R. and M. A. E. Malaquias. 2019. A molecular phylogeny of the Indo-West Pacific species of Haloa sensu lato ga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apex (mollusc)
In anatomy, an apex (adjectival form: apical) is part of the mollusc shell, shell of a mollusk. The apex is the pointed tip (the oldest part) of the shell of a gastropod, scaphopod, or cephalopod. The apex is used in end-blown conch (instrument), conches. Gastropods The word "apex" is most often used to mean the tip of the spire (mollusc), spire of the shell of a gastropod. The apex is the first-formed, and therefore the oldest, part of the shell. To be more precise, the apex would usually be where the tip of the embryonic shell or protoconch is situated, if that is still present in the adult shell (often it is lost or eroded away). Coiled gastropod shells The phrase apical whorls, or protoconch, means the whorls that constitute the embryonic shell at the apex of the shell, especially when this is clearly distinguishable from the later whorls of the shell, otherwise known as the teleoconch. Comparison of the apical part and the whole shell of ''Otukaia kiheiziebisu'': File:Cal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atys (gastropod)
''Atys'' is a genus of very small to medium-sized sea snails, marine opisthobranch gastropod mollusks in the family Haminoeidae. All the species within the genus Atys are herbivores. They occur in tropical and warm oceans and seas. They are cephalaspideans, part of the suborder of headshield slugs and bubble snails. The genus was named after Atys, a king of Alba Longa, who was mentioned in ancient Greek texts. Description These snails have a shell which is very lightweight and translucent, with a sunken spire. The shape of the shell in some species resembles a bubble, and because of this, species in this genus are commonly known as Atys bubble shells or Atys bubble snails. (Several other shelled families within the Cephalaspidea are even more commonly known as "bubble shells" or "bubble snails", for example, the Bullidae.) The anatomy of the soft parts of most species within this genus has not been studied, but it seems that some of the species in this genus can not reliably ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aliculastrum
''Aliculastrum'' is a genus of small sea snails or bubble snails, marine opisthobranch gastropod molluscs in the family Haminoeidae. MolluscaBase eds. (2024). MolluscaBase. Aliculastrum Pilsbry, 1896. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=718604 on 2024-08-11 This genus was originally considered to be a subgenus of '' Atys''. Life habits These bubble snails are herbivores; they live on plant or algal substrates. Species Species in the genus ''Aliculastrum'' include: * † '' Aliculastrum attenuatum'' (J. de C. Sowerby, 1831) * ''Aliculastrum cylindricum ''Aliculastrum cylindricum'', (common names: cylindrical atys, cylindrical true bubble, silkworm shell), is a species of gastropods belonging to the family Haminoeidae. Description The length of the shell reaches . (Described as ''Bulla elo ...'' (Helbling, 1779) * '' Aliculastrum debile'' (Pease, 1860) * '' Aliculastrum exaratum'' (Carpenter, 185 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fluorescence
Fluorescence is one of two kinds of photoluminescence, the emission of light by a substance that has absorbed light or other electromagnetic radiation. When exposed to ultraviolet radiation, many substances will glow (fluoresce) with colored visible light. The color of the light emitted depends on the chemical composition of the substance. Fluorescent materials generally cease to glow nearly immediately when the radiation source stops. This distinguishes them from the other type of light emission, phosphorescence. Phosphorescent materials continue to emit light for some time after the radiation stops. This difference in duration is a result of quantum spin effects. Fluorescence occurs when a photon from incoming radiation is absorbed by a molecule, exciting it to a higher energy level, followed by the emission of light as the molecule returns to a lower energy state. The emitted light may have a longer wavelength and, therefore, a lower photon energy than the absorbed radi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atys Cylindricum
Atys may refer to: * Atys (King of Alba Longa), a king of Alba Longa in Roman mythology * Atys of Lydia, an early king of Lydia, then probably known as Maeonia, and was the father of Lydus * Atys (son of Croesus), the son of the later King Croesus of Lydia * Tantalus (son of Broteas), husband of Clytemnestra in Greek mythology * ''Atys'' (Lully), a 1676 ''tragédie lyrique'' by Jean-Baptiste Lully * Atys, a poorly-studied Lydian solar deity, wrongly conflated with Attis in 19th century scholarship (''see discussion in'' Attis) * ''Atys'' (gastropod), a genus of gastropods in the family Haminoeidae * ''Atys'' (Piccinni), a 1780 tragédie lyrique in three acts by Niccolò Piccinni * Atys, a fictional planet that is the setting of the massively multiplayer online role-playing game '' Ryzom'' See also * Atis (other) * Attis, a Phrygian / Roman deity with a similar-sounding name, frequently but mistakenly equated with Atys (deity), due to a long-accepted 19th c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atys Naucum
''Atys naucum'', common names the "white nut sheath bubble'" and the "Pacific nut sheath bubble", is a species of small tropical sea snail, a bubble snail, a Marine (ocean), marine opisthobranch gastropod mollusk in the family Haminoeidae, the haminoea bubble snails.Rosenberg, G. (2012). Atys naucum. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=215008 on 2012-06-07 Distribution The distribution of this species occurs in the Indo-Pacific, off Madagascar, the Red Sea, and also in Australia. It is a common species. Description The length of the shell of this species is 22–50 mm. In life the shell is light brown and inflated. When the animal dies the periostracum which covers the shell dries out and is lost. Juveniles have brown wavy lines on the shell. This snail is a herbivore. References * Dautzenberg, Ph. (1929). ''Contribution à l'étude de la faune de Madagascar:'' Mollusca marina testacea. Faune des c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zostera
''Zostera'' is a small genus of widely distributed seagrasses, commonly called marine eelgrass, or simply seagrass or eelgrass. The genus ''Zostera'' contains 15 species. Ecology '' Zostera marina'' is found on sandy substrates or in estuaries, usually submerged or partially floating. Most ''Zostera'' are perennial. They have long, bright green, ribbon-like leaves, the width of which are about . Short stems grow up from extensive, white branching rhizomes. The flowers are enclosed in the sheaths of the leaf bases; the fruits are bladdery and can float. ''Zostera'' beds are important for sediment deposition, substrate stabilization, as substrate for epiphytic algae and micro-invertebrates, and as nursery grounds for many species of economically important fish and shellfish. ''Zostera'' often forms beds in bay mud in the estuarine setting. It is an important food for brant geese and wigeons, and even (occasionally) caterpillars of the grass moth '' Dolicharthria punctalis''. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Egg (biology)
An egg is an organic vessel grown by an animal to carry a possibly fertilization, fertilized egg cell (a zygote) and to egg incubation, incubate from it an embryo within the egg until the embryo has become an animal fetus that can survive on its own, at which point the animal hatches. Most arthropods, vertebrates (excluding live-bearing mammals), and Mollusca, mollusks lay eggs, although some, such as scorpions, do not. Reptile eggs, bird eggs, and monotreme eggs are laid out of water and are surrounded by a protective eggshell, shell, either flexible or inflexible. Eggs laid on land or in nests are usually kept within a warm and favorable temperature range while the embryo grows. When the embryo is adequately developed it hatches, i.e., breaks out of the egg's shell. Some embryos have a temporary egg tooth they use to crack, pip, or break the eggshell or covering. The largest recorded egg is from a whale shark and was in size. Whale shark eggs typically hatch within the m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intersex
Intersex people are those born with any of several sex characteristics, including chromosome patterns, gonads, or genitals that, according to the Office of the United Nations High Commissioner for Human Rights, "do not fit typical binary notions of male or female bodies". Sex assignment at birth usually aligns with a child's external genitalia. The number of births with ambiguous genitals is in the range of 1:4,500–1:2,000 (0.02%–0.05%). Other conditions involve the development of atypical chromosomes, gonads, or hormones. The portion of the population that is intersex has been reported differently depending on which definition of intersex is used and which conditions are included. Estimates range from 0.018% (one in 5,500 births) to 1.7%. The difference centers on whether conditions in which chromosomal sex matches a phenotypic sex which is clearly identifiable as male or female, such as late onset congenital adrenal hyperplasia (1.5 percentage points) and Kline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Alga
The green algae (: green alga) are a group of chlorophyll-containing autotrophic eukaryotes consisting of the phylum Prasinodermophyta and its unnamed sister group that contains the Chlorophyta and Charophyta/ Streptophyta. The land plants ( Embryophytes) have emerged deep within the charophytes as a sister of the Zygnematophyceae. Since the realization that the Embryophytes emerged within the green algae, some authors are starting to include them. The completed clade that includes both green algae and embryophytes is monophyletic and is referred to as the clade Viridiplantae and as the kingdom Plantae. The green algae include unicellular and colonial flagellates, most with two flagella per cell, as well as various colonial, coccoid (spherical), and filamentous forms, and macroscopic, multicellular seaweeds. There are about 22,000 species of green algae, many of which live most of their lives as single cells, while other species form coenobia (colonies), long filaments, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
