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Arion Lusitanicus
''Arion lusitanicus'', also known by its common name Portuguese slug, is a species of air-breathing land slug, a terrestrial molluscs, terrestrial pulmonate gastropod mollusc, mollusk in the family Arionidae. Distribution ''Arion lusitanicus'' is endemic to forests of the western Lisbon Region (such as the Sintra-Cascais Natural Park or the Arrábida Natural Park) in Portugal. Description In slugs it is often difficult to establish good criteria for identifying species using external features or internal features, as colouration can be quite variable, and the rather plastic anatomy makes diagnostic anatomical features difficult to establish. It is a rather large (up to long) slug of reddish-brown colour. There are two light brown bands on the dorsum and mantle, the right band passes above the pneumostome. The margin of the foot is reddish or yellowish with dark transverse lines reaching into the lateral parts of the sole. The sole is olive greyish with darker marginal zones. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Slug
Slug, or land slug, is a common name for any apparently shell-less terrestrial gastropod mollusc. The word ''slug'' is also often used as part of the common name of any gastropod mollusc that has no shell, a very reduced shell, or only a small internal shell, particularly sea slugs and semi-slugs (this is in contrast to the common name ''snail'', which applies to gastropods that have a coiled shell large enough that they can fully retract their soft parts into it). Various taxonomic families of land slugs form part of several quite different evolutionary lineages, which also include snails. Thus, the various families of slugs are not closely related, despite the superficial similarity in overall body form. The shell-less condition has arisen many times independently as an example of convergent evolution, and thus the category "slug" is polyphyletic. Taxonomy Of the six orders of Pulmonata, two – the Onchidiacea and Soleolifera – solely comprise slugs. A third group, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jules François Mabille
Jules François Mabille (Tours, 5 December 1831 − 18 January 1904) was a French malacologist, biologist and zoologist who in many trips around the world discovered and studied many species of mollusc. In 1882−83 Mabille participated in the French scientific expedition to Cape Horn and the South Seas, with his fellow malacologist Alphonse Trémeau de Rochebrune Alphonse Amédée Trémeau de Rochebrune was a French botanist, malacologist and a zoologist. He was born on 18 September 1836 in Saint-Savin, and died on 23 April 1912 in Paris. Biography The son of a curator of the Museum of Angoulême, he bec ... and they described many new species of mollusc. His extensive research was written up in 1889. References External lin ...
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Arrábida Natural Park
Arrábida Natural Park () is a protected area in Portugal. Founded in 1976, the park occupies an area of , ( on land and at sea) covering the southernmost margin of the Setúbal Peninsula. One of the park's unique features is its carbonate geology mountain range, Serra da Arrábida () which comes into contact with the ocean similarly to some locations in the Mediterranean, contrasting with the usual Portuguese coast (long sand beaches and cliffs) Three of the park's beaches—Galapinhos, Portinho da Arrábida and Figueirinha—are popular among the inhabitants of Lisbon and Setúbal. Overlooking the three beaches is the Convent of Our Lady of Arrábida, a former monastery established in the 16th century, managed today by the Fundação Oriente. History The particular characteristics of the Serra da Arrábida, Arrábida massif, resulted (since the 1940s) in various attempts to protect the region, culminating in the creation of the Arrábida Reserve (Decree 355/71) on 16 August 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fauna Of Portugal
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 becomin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arion (gastropod)
''Arion'' is a genus of air-breathing land slugs in the family Arionidae, the roundback slugs. Most species of this Palearctic genus are native to the Iberian Peninsula. Species can be difficult to distinguish from one another upon cursory examination, because individuals of a species can vary in color and there are few obvious differences between taxa. The color of an individual can be influenced by its diet. Some ''Arion'' are known as pests, such as ''A. lusitanicus'' auct. non Mabille (= ''A. vulgaris''), which damages agricultural crops and ornamental plants, and ''A. rufus'', a familiar garden pest. ''Arion'' slugs are often transported internationally in shipments of plant products and mushrooms. ''Arion'' slugs have been identified in North America and Australia as invasive species An invasive species is an introduced species that harms its new environment. Invasive species adversely affect habitats and bioregions, causing ecological, environmental, and/or e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encyclopedia Of Life
The Encyclopedia of Life (EOL) is a free, online encyclopedia intended to document all of the 1.9 million living species known to science. It aggregates content to form "pages" for every known species. Content is compiled from existing trusted databases which are curated by experts and it calls on the assistance of non-experts throughout the world. It includes video, sound, images, graphics, information on characteristics, as well as text. In addition, the Encyclopedia incorporates species-related content from the Biodiversity Heritage Library, which digitizes millions of pages of printed literature from the world's major natural history libraries. The BHL digital content is indexed with the names of organisms using taxonomic indexing software developed by the Global Names project. The EOL project was initially backed by a US$50 million funding commitment, led by the MacArthur Foundation and the Sloan Foundation, who provided US$20 million and US$5 million, respectively. The add ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chromosomes
A chromosome is a package of DNA containing part or all of the genetic material of an organism. In most chromosomes, the very long thin DNA fibers are coated with nucleosome-forming packaging proteins; in eukaryotic cells, the most important of these proteins are the histones. Aided by chaperone proteins, the histones bind to and condense the DNA molecule to maintain its integrity. These eukaryotic chromosomes display a complex three-dimensional structure that has a significant role in transcriptional regulation. Normally, chromosomes are visible under a light microscope only during the metaphase of cell division, where all chromosomes are aligned in the center of the cell in their condensed form. Before this stage occurs, each chromosome is duplicated ( S phase), and the two copies are joined by a centromere—resulting in either an X-shaped structure if the centromere is located equatorially, or a two-armed structure if the centromere is located distally; the joined ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spermatophore
A spermatophore, from Ancient Greek σπέρμα (''spérma''), meaning "seed", and -φόρος (''-phóros''), meaning "bearing", or sperm ampulla is a capsule or mass containing spermatozoa created by males of various animal species, especially salamanders and arthropods, and transferred in entirety to the female's ovipore during reproduction. Spermatophores may additionally contain nourishment for the female, in which case it is called a nuptial gift, as in the instance of bush crickets. In the case of the toxic moth '' Utetheisa ornatrix'', the spermatophore includes sperm, nutrients, and pyrrolizidine alkaloids which prevent predation because it is poisonous to most organisms. However, in some species such as the Edith's checkerspot butterfly, the "gift" provides little nutrient value. The weight of the spermatophore transferred at mating has little effect on female reproductive output. Arthropods Spermatophores are the norm in arachnid Arachnids are arthro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spanish Slug
The Spanish slug (''Arion vulgaris'', but formerly widely referred to as ''Arion lusitanicus'' owing to a misidentification) is an air-breathing land slug, a terrestrial molluscs, terrestrial pulmonate gastropod mollusc, mollusk in the family Arionidae, the roundback slugs. Other vernacular names are Lusitanian slug, Iberian slug, and killer slug. It is a large, conspicuous slug, which has spread across much of Europe since the 1950s and now reached North America. It may attain high densities and be a serious horticultural and agricultural pest, and is considered an invasive species. The life cycle is annual, with adults appearing in summer and dying off before winter. Confusion over nomenclature The Spanish slug was identified as ''Arion lusitanicus'' when it was first reported as an invading species in France in 1956, and hence it is sometimes called the Lusitanian slug (e.g.). This was a case of misidentification. In slugs, it is often impossible to find external characters th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animalbase
AnimalBase is a project brought to life in 2004 and is maintained by the University of Göttingen, Germany. The goal of the AnimalBase project is to digitize early zoological literature, provide copyright-free open access to zoological works, and provide manually verified lists of names of zoological genera and species as a free resource for the public. AnimalBase contributed to opening up the classical taxonomic literature, which is considered as useful because access to early literature (especially for the late 18th century) can be difficult for researchers who need the old sources for their taxonomic research. AnimalBase data are public domain. The public use of AnimalBase data is not restricted or conditioned.AnimalBase Project Group, 2005-2010. AnimalBase. Early zoological literature online. World wide web electronic publication http://www.animalbase.uni-goettingen.de accessed 30 July 2010. AnimalBase covers all zoological disciplines. In the field of biodiversity informatics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portugal
Portugal, officially the Portuguese Republic, is a country on the Iberian Peninsula in Southwestern Europe. Featuring Cabo da Roca, the westernmost point in continental Europe, Portugal borders Spain to its north and east, with which it shares Portugal-Spain border, the longest uninterrupted border in the European Union; to the south and the west is the North Atlantic Ocean; and to the west and southwest lie the Macaronesia, Macaronesian archipelagos of the Azores and Madeira, which are the two Autonomous Regions of Portugal, autonomous regions of Portugal. Lisbon is the Capital city, capital and List of largest cities in Portugal, largest city, followed by Porto, which is the only other Metropolitan areas in Portugal, metropolitan area. The western Iberian Peninsula has been continuously inhabited since Prehistoric Iberia, prehistoric times, with the earliest signs of Human settlement, settlement dating to 5500 BC. Celts, Celtic and List of the Pre-Roman peoples of the Iberia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lisbon Region
Lisbon Region () is one of the seven NUTS II designated regions of Portugal, which coincides with the NUTS III subregion Lisbon Metropolitan Area. The region covers an area of 3001.95 km2 (the smallest region on mainland Portugal) and includes a population of 2,815,851 inhabitants according to the 2011 census (the second most populated region in Portugal after the Norte region), a density of 1039 inhabitants/km2. Considered as representing the Lisbon Metropolitan Region. It is a region of significant importance in industry (light and heavy), services, and it is highly urbanized. The gross domestic product (GDP) of the region was 73.3 billion euros in 2018, accounting for 36% of Portugal's economic output. GDP per capita adjusted for purchasing power was 30,200 euros or 100% of the EU27 average in the same year. The GDP per employee was 92% of the EU average. History Prior to 2002, the area was included within the NUTS II region of Lisbon and Tagus Valley (that also inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
