| Cerion geophilum | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Family: | Cerionidae |
| Genus: | Cerion |
| Species: | C. geophilum |
| Binomial name | |
| Cerion geophilum Clench & Aguayo, 1949 | |
| Synonyms | |
| |
Cerion geophilum (occasionally known as Cerion geophilus) is a species of terrestrial gastropod in the family Cerionidae, [1] endemic to Morales Beach, Cuba.
Cerion geophilum is part of the distinct semi-square and flat-spired Cerion species clade (or complex) including C. disforme, alberti and torrei all of which are endemic to Holguin Province. This species naturally hybridizes with C. torrei moralesi in the western reaches of Morales Beach. [2] Variation between various Cerion species within small areas of coastline is significant in comparison to that of other terrestrial gastropod groups- along a 50 kilometer stretch of coastline, seven distinct species and many hybrids are present. Several hybrid-swarm populations were interpreted by Ernst Mayr, representing contact zones between various scattered populations of different species and morphotypes. [3]
The Pacific giant salamanders are members of the genus Dicamptodon and are large salamanders endemic to the Pacific Northwest in North America.
The Sierra Nevada de Santa Marta is an isolated mountain range separated from the Andes chain that runs through Colombia. Reaching an altitude of 5,700 m (18,700 ft) just 42 km (26 mi) from the Caribbean coast, the Sierra Nevada is one of the world's highest coastal ranges, being 250m shorter than the Saint Elias Mountains in Canada. The Sierra Nevada encompasses about 17,000 km2 (6,600 sq mi) and serves as the source of 36 rivers. The range is in the Departments of Magdalena, Cesar and La Guajira.
A hybrid zone exists where the ranges of two interbreeding species or diverged intraspecific lineages meet and cross-fertilize. Hybrid zones can form in situ due to the evolution of a new lineage but generally they result from secondary contact of the parental forms after a period of geographic isolation, which allowed their differentiation. Hybrid zones are useful in studying the genetics of speciation as they can provide natural examples of differentiation and (sometimes) gene flow between populations that are at some point between representing a single species and representing multiple species in reproductive isolation.
Terrestrial animals are animals that live predominantly or entirely on land, as compared with aquatic animals, which live predominantly or entirely in the water, or amphibians, which rely on a combination of aquatic and terrestrial habitats. Terrestrial invertebrates include ants, flies, crickets, grasshoppers and spiders.
Cerion nanus is a species of medium-sized air-breathing land snail, a terrestrial pulmonate gastropod in the family Cerionidae.
Cerion is a genus of small to medium-sized tropical air-breathing land snails, terrestrial pulmonate gastropods in the family Cerionidae, sometimes known as the peanut snails. The genus is endemic to the Caribbean region.
Urocoptidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Urocoptoidea.
Cerionidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Urocoptoidea.
The Orthalicoidea are a superfamily of air-breathing land snails, terrestrial gastropod mollusks in the informal group Sigmurethra.
Cenococcum geophilum Fr., synonym Cenococcum graniforme (Sow.) Ferd. and Winge, is an Ascomycete fungal species and is the only member in the genus Cenococcum. It is one of the most common ectomycorrhizal fungal species encountered in forest ecosystems. The geographic distribution of the species is notably cosmopolitan; it is found in ecosystems with a wide range of environmental conditions, and in many cases in high relative frequency. Because of its wide distribution and abundance in forest soils, it is one of the most well-studied ectomycorrhizal fungal species. While the species has long been known to be sterile and not produce asexual or sexual spores, cryptic sexual stages may exist. The hyphae produced by C. geophilum are characterized by their thick (1.5-8 um), straight and jet black appearance with little branching. They usually form monopodial (unbranched) ectomycorrhizas. The mantles of C. geophilum ectomycorrhizas are usually thick with few to many emanating hyphae.
Cerion uva is a species of air-breathing tropical land snail, a terrestrial pulmonate gastropod mollusk in the family Cerionidae, the peanut snails.
The Helderberg Marine Protected Area is a small marine conservation area on the north-eastern side of False Bay in the Western Cape province of South Africa, It lies between the mouths of the Lourens River in the Strand, and the Eerste River in Macassar.
Cerion paucisculptum is a species of terrestrial gastropod in the family Cerionidae, endemic to the Sama Bay area in Cuba. The type locality is Punta de Música, Samá Bay, and this species may already be extinct as it was last collected when the Samá Bay area was less disturbed and the distribution of endemic cerionids was more contiguous. however, C. banesense is also found in the Arroyo Seco, Río Seco, and Ensenada de Río Seco areas which are within the immediate vicinity of the type locality- Cerion paucisculptum may still occur alongside Cerion banesense.
Cerion hessei is a species of terrestrial gastropod in the family Cerionidae endemic to coastal areas near Balcón de Damas in Guardalavaca beach area. Individuals from the type locality showed great variation in size, some individuals being among the smallest recorded in the genus. They are found only among coastal dwarf sea grape trees and in dry foliage in dunes. Some other nearby keys also possess dwarf Cerion species, however the reason is yet unknown.
Cerion alberti is a species of terrestrial gastropod in the family Cerionidae. It is endemic to coastal vegetation in the Ramón de Antilla Peninsula, Cuba. C. alberti is the most restricted species of Cerion in the Holguin Province, occurring within only 1 km2 of sea grapes and coastal vegetation. Historical collections have reported a Cañón de Banes locality, in which several species including C. alberti occur.
Cerion saetiae is a species of terrestrial gastropod in the family Cerionidae endemic to coastal areas on Saetia Key, Cuba. The type locality harbours few specimens, though new locality records have found more remains despite a concerning decline in live individuals. This species is found in coastal sea-grape and sand-vegetation habitats on Playita de Fidel, Playa del Cristo and Baracutey Beach.
Cerion prestoni is a species of terrestrial gastropod in the family Cerionidae, endemic to Preston by Nipe Bay, Cuba. This species is morphologically similar to other cerionids in the 'scalarinum complex', however it differs from most species in having thick, striated ribs. This species complex represents an interesting divergence in Cuban cerionid forms, possessing several unique features.
The Stilbaai Marine Protected Area is an inshore conservation region in the territorial waters near Stilbaai on the south coast of the Western Cape province of South Africa.
Cerion disforme is a species of terrestrial gastropod in the family Cerionidae, endemic to beaches in Holguín Province, Cuba. The nominal subspecies of C. disforme is endemic to various parapatric microhabitats associated with karst rocks and xerophytic palms and evergreen forest. C. disforme nodali however occurs in small dunes littered with rocky substrates, and also shares the evergreen forest ecotone with the nominal subspecies, in which it is found on leaves and branches. Despite sharing ecotones and various habits, there has been a significant divergence and speciation among the Holguín cerionids- within the vicinity of Morales Beach and Punta Manolito in the Ramón de Antillo Peninsula there is one of the greatest concentrations of Cerion diversity in the Caribbean.