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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 ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haminoeoidea
Haminoeoidea is a taxonomic superfamily of small sea snails or bubble shells, marine opisthobranch gastropod mollusks in the clade Cephalaspidea, the headshield slugs and bubble snails. These cephalaspideans do have distinct anatomical and morphological characteristics, but unfortunately many species were described only from empty 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 is rather wide and there is no operculum. Furthermore, the shell is very fragile and can easily be crushed by a predator. The cephalic shield of most species in this superfamily has two hind lobes that lie back on the front of the shell. The black eyes are usually buried just beneath the surf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bullacta
''Bullacta exarata'', common name the Korean mud snail, is a species of a sea snail or bubble snail, a marine gastropod mollusc in the family Haminoeidae, the bubble snails. ''Bullacta exarata'' is a commercially important mollusc which is used as a food item in eastern China. Taxonomy ''Bullacta exarata'' is the only species in the genus ''Bullacta''. cf. ''Bullacta'' is the type genus of the family Bullactidae Thiele, 1926, as shown in the taxonomy of the Gastropoda by Bouchet & Rocroi (2005). Based on phylogenetic genetic analysis by Malaquias (2010), ''Bullacta exarata'' should be placed in the family Haminoeidae. Distribution ''Bullacta exarata'' is endemic to coastlines of the South and East China Seas from Hainan to the Bohai Sea in north-eastern China, the western coast and south coast of Korea and Japan.Ye S.-F. & Lu J.-J. (2001) "Analysis on the spatial distribution of ''Bullacta exarata'' (Mollusca: Gastropoda: Atyidae) population in Yangtze River Estuary, C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apex (mollusc)
In anatomy, an apex ( adjectival form: apical) is part of the 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 conches. Gastropods The word "apex" is most often used to mean the tip of the 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:Calliostoma kiheiziebisu apex.png File:Calli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bakawan (gastropod)
Bakawan is a village in the state of Madhya Pradesh located on the banks of the river Narmada in India. The village falls under the Nimar region (pronounced Nimadh/Nimad/Nimarh) in Malwa. The region predominantly speaks the local dialect "Nimadi" and Hindi. Nearest airport is Indore and nearest railway station is Khandwa. Introduction A steep climb from the banks of the river Narmada leads to the village with paved streets. The village has a population around 8000 as per 2011 Census, supported by a government school, dispensary, nearest post office mardana and other amenities. Six buses run from the city to Sanawad and Khargone. History Ruins indicates that a small fort was constructed in the nearby village called Mardana. The fort is said to be the capital of Raja Mordhvaj who died at Prayagraj. The ruins show the ''sinhasana'' (seat) of Maharaja Mayuradhvaja in a cave. The fort has a hidden ghat (gupt ghat) and a guhavasi Shiva. The village was also among the sites se ... [...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 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 A .... 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'' * '' Aliculastrum cylindricum'' (Helbling, 1779) - Cylindrical atys, cylindrical true bubble, silkworm shell, Distribution : Indo-West Pacific, Length: 10 to 30 mm * '' Aliculastrum debile'' (Pease, 1860) * '' Aliculastrum exaratum'' (Carpenter, 1857) * '' Aliculastrum extensum'' * '' Aliculastrum ooformis'' (Habe, 1964) * '' Aliculastrum parallelum'' (Go ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fluorescence
Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. It is a form of luminescence. In most cases, the emitted light has a longer wavelength, and therefore a lower photon energy, than the absorbed radiation. A perceptible example of fluorescence occurs when the absorbed radiation is in the ultraviolet region of the electromagnetic spectrum (invisible to the human eye), while the emitted light is in the visible region; this gives the fluorescent substance a distinct color that can only be seen when the substance has been exposed to UV light. Fluorescent materials cease to glow nearly immediately when the radiation source stops, unlike phosphorescent materials, which continue to emit light for some time after. Fluorescence has many practical applications, including mineralogy, gemology, medicine, chemical sensors ( fluorescence spectroscopy), fluorescent labelling, dyes, biological detectors, cosmic-ray detec ... [...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 Phrygia In classical antiquity, Phrygia ( ; grc, Φρυγία, ''Phrygía'' ) was a kingdom in the west central part of Anatolia, i ... [...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 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 A herbivore is an animal anatomically and physiologically adapted to eating plant material, for example foliage or marine algae, for the mai ... [...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, and also known as seaweed by some fishermen and recreational boaters including yachtsmen. 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 w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Egg (biology)
An egg is an organic vessel grown by an animal to carry a possibly fertilized egg cell (a zygote) and to 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 such as insects, vertebrates (excluding live-bearing mammals), and 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 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 mother. At and up to , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intersex
Intersex people are individuals 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 anatomical sex and phenotype. The number of births with ambiguous genitals is in the range of 1:2000–1:4500 (0.022%–0.05%). Other conditions involve atypical chromosomes, gonads, or hormones. Some persons may be assigned and raised as a girl or boy but then identify with another gender later in life, while most continue to identify with their assigned sex. The number of births where the baby is intersex has been reported differently depending on who reports and which definition of intersex is used. Anne Fausto-Sterling and her co-authors suggest that the prevalence of "nondimorphic sexual development" might be as high as 1.7%. A study publi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
