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Amastra Variegata
''Amastra variegata'' is a terrestrial snail species belonging to the family Amastridae. Description The shell of ''Amastra variegata'' is reddish-brown with darker variegated bands, hence the specific epithet "variegata". Its body is translucent brown. Distribution and habitat ''Amastra variegata'' is endemic to Oahu, Hawaii, found in the Wai‘anae Mountains. It was believed to be extinct until recently, when a population was rediscovered at the bottom of a steep gulch in northern Wai'anae. This species is also one of the rarest mollusks in the world. Threats Though this species is not federally or state listed as endangered but it is listed as critically endangered on the IUCN red list. It is vulnerable and susceptible to predation by rats and chameleons Chameleons or chamaeleons (family Chamaeleonidae) are a distinctive and highly specialized clade of Old World lizards with 200 species described as of June 2015. The members of this family are best known for their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family (, : ) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amastridae
Amastridae is a Taxonomy (biology), taxonomic family (biology), family of small, air-breathing, land snails, Terrestrial animal, terrestrial pulmonate gastropod mollusks in the superfamily Pupilloidea.MolluscaBase eds. (2021). MolluscaBase. Amastridae Pilsbry, 1910. Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=994718 on 2021-02-21 Distribution This family is endemism, endemic to the Hawaiian Islands. Genera ;Subfamily Amastrinae Pilsbry, 1910 * ''Amastra'' H. Adams & A. Adams, 1855 * ''Carelia (gastropod), Carelia'' H. Adams & A. Adams, 1855 * ''Cyclamastra'' Pilsbry & Vanatta, 1905 : synonym of ''Amastra (Cyclamastra)'' Pilsbry & Vanatta, 1905 represented as ''Amastra'' H. Adams & A. Adams, 1855 * ''Kauaia'' Sykes, 1900: synonym of ''Amastra (Kauaia)'' Sykes, 1900 represented as ''Amastra'' H. Adams & A. Adams, 1855 (unaccepted rank) * ''Laminella'' L. Pfeiffer, 1854 * ''Planamastra'' Hyatt & Pilsbry, 1911 * ''Tropidop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amastra Variegata
''Amastra variegata'' is a terrestrial snail species belonging to the family Amastridae. Description The shell of ''Amastra variegata'' is reddish-brown with darker variegated bands, hence the specific epithet "variegata". Its body is translucent brown. Distribution and habitat ''Amastra variegata'' is endemic to Oahu, Hawaii, found in the Wai‘anae Mountains. It was believed to be extinct until recently, when a population was rediscovered at the bottom of a steep gulch in northern Wai'anae. This species is also one of the rarest mollusks in the world. Threats Though this species is not federally or state listed as endangered but it is listed as critically endangered on the IUCN red list. It is vulnerable and susceptible to predation by rats and chameleons Chameleons or chamaeleons (family Chamaeleonidae) are a distinctive and highly specialized clade of Old World lizards with 200 species described as of June 2015. The members of this family are best known for their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ludwig Karl Georg Pfeiffer
Ludwig Karl Georg Pfeiffer, also known as Louis Pfeiffer (4 July 1805 – 2 October 1877), was a German physician, botany, botanist and conchology, conchologist. Early life, education and medical career Pfeiffer was born in Cassel, the eldest son of the jurist Burkhard Wilhelm Pfeiffer and his wife Louise (née Harnier). Pfeiffer received his primary education in the Friedrichsgymnasium Kassel, Cassel Lyceum, where he distinguished himself academically, and by the age of fifteen was already at the top of his class. In 1820, political tensions forced his father to relocate the family to Lübeck, but Louis continued to excel, reaching the top of his class there as well. At the age of sixteen, Pfeiffer entered into university to study medicine, first at the University of Göttingen, and finally at the University of Marburg, where he studied under such prominent scientists as Georg Wilhelm Franz Wenderoth and :de:Ernst Daniel August Bartels, Ernst Daniel August Bartels, graduating in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variegated
'' Cryptocarya williwilliana'' showing leaf venation and variegated leaves Variegation is the appearance of differently coloured zones in the foliage, flowers, and sometimes the stems and fruit of plants, granting a speckled, striped, or patchy appearance. The colors of the patches themselves vary from a slightly lighter shade of the natural coloration to yellow, to white, or other colors entirely such as red and pink. This is caused by varying levels and types of pigment, such as chlorophyll in leaves. Variegation can be caused by genetic mutations affecting pigment production, or by viral infections such as those resulting from mosaic viruses. Many plants are also naturally variegated, such as '' Goeppertia insignis''. Most of these are herbaceous or climbing plants, and are most often species native to tropical rainforests. Many species which are normally non-variegated are known to display variegation. Their appearance is desirable to enthusiasts, and many such plants are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oahu
Oahu (, , sometimes written Oahu) is the third-largest and most populated island of the Hawaiian Islands and of the U.S. state of Hawaii. The state capital, Honolulu, is on Oahu's southeast coast. The island of Oahu and the uninhabited Northwestern Hawaiian Islands constitute the City and County of Honolulu, Hawaii, City and County of Honolulu. In 2021, Oahu had a population of 995,638, up from 953,207 in 2010 (approximately 70% of the total 1,455,271 population of the Hawaiian Islands, with approximately 81% of those living in or near the Honolulu urban area). Oahu is long and across. Its shoreline is long. Including small associated islands such as Ford Island plus those in Kāneohe Bay and off the eastern (windward and leeward, windward) coast, its area is , making it the List of islands of the United States by area, 20th-largest island in the United States. Well-known features of Oahu include Waikīkī, Pearl Harbor, Diamond Head, Hawaii, Diamond Head, Hanauma Bay, Kān ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waiʻanae Range
Waianae Range (sometimes referred to as the ''Waianae Mountains'') is the eroded remains of an ancient shield volcano that comprises the western half of the Hawaiian Island of Oahu. Its crest, at Kaʻala, is the highest peak on Oahu at . Like the neighboring Koolau, the Waianae Range is not a mountain range in the sense most people are familiar with, as the mountain range as a whole was created from a single volcano rather than plate tectonics. The oldest lava dated from the volcano are about 3.9 million years old. About 3.2 million years ago, the volcano's activity changed, the rate of eruption started to decrease and the composition of the lava erupted from the volcano changed. The volcano is thought to have last erupted about 2.5 million years ago. When active, the Waianae volcano's center of activity was at present-day Lualualei Valley. Intense erosion on the western flank of the mountain has destroyed much of those flanks. Thus, the mountain today is much smaller tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chameleon
Chameleons or chamaeleons (Family (biology), family Chamaeleonidae) are a distinctive and highly specialized clade of Old World lizards with 200 species described as of June 2015. The members of this Family (biology), family are best known for their distinct range of colours, being capable of colour-shifting camouflage. The large number of species in the family exhibit considerable variability in their capacity to change colour. For some, it is more of a shift of brightness (shades of brown); for others, a plethora of colour-combinations (reds, yellows, greens, blues) can be seen. Chameleons are also distinguished by their zygodactylous feet, their prehensility, prehensile tail, their laterally compressed bodies, their head casques, their projectile tongues used for catching prey, their swaying gait, and in some species crests or horns on their brow and snout. Chameleons' eyes are independently mobile, and because of this the chameleon’s brain is constantly analyzing two sepa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amastra
''Amastra'' is a genus of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Amastridae. Like many Hawaiian land snails, species in this genus have adapted to a specific ecological niche and have evolved in relative isolation. They are thriving in wet or moderately wet forested areas. Many of the species in this genus have become extinct in recent times or have become critically endangered through habitat loss or predation. This loss is often highlighted as part of the broader biodiversity crisis faced by the Hawaiian Islands. Description The elongated shell is typically dextral (but some are sinistral), ranging from globose-conic to oblong-conic in shape. It may be umbilicate or imperforate. he shell surface might show growth striations or a fine malleation. The coloration varies, often appearing dull or dark, but sometimes light with a dull, darker, or yellowish cuticle. The shell consists of 5½ to 8 whorls, with the spire and apex conical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Molluscs Of Hawaii
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or becoming ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
