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Timyminae
''Timyma'' is a genus of land planarians from Chile. It is the sole genus of the subfamily Timyminae. Description The genus ''Timyma'' includes planarians of elongate body and spatula-like anterior end. Although most land planarians native from South America have dorsal testes, ''Timyma'' has ventral testes, which at first suggested that it is related to the Australasia species of the tribe Caenoplanini. However, the longitudinal cutaneous musculature of ''Timyma'' is very weak, differently from other genera in this tribe. However, molecular studies confirmed that it is more closely related to other land planarians in South America, having a sister-group relationship with the subfamily Geoplaninae Geoplaninae is a subfamily of land planarians endemic to the Neotropical region. However, one species, ''Obama nungara'' has been introduced in Europe. Description The subfamily Geoplaninae was initially defined by Ogren and Kawakatsu (1990)Ogr .... The copulatory apparatus lack ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Planarian
Geoplanidae is a family of flatworms known commonly as land planarians or land flatworms. These flatworms are mainly predators of other invertebrates, which they hunt, attack and capture using physical force and the adhesive and digestive properties of their mucus. They lack water-retaining mechanisms and are therefore very sensitive to humidity variations of their environment. Because of their strict ecological requirements, some species have been proposed as indicators of the conservation state of their habitats. They are generally animals with low vagility (dispersal ability) and with very specific habitat requirements, so they can be also used to accurately determine the distribution of biogeographic realms. Today the fauna of these animals is being studied to select conservation priorities in the Atlantic rainforest in Brazil. At the other extreme, one species in this family, ''Platydemus manokwari'' has become an invasive species in both disturbed and wild habitats in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timyma Juliae
''Timyma'' is a genus of land planarians from Chile. It is the sole genus of the subfamily Timyminae. Description The genus ''Timyma'' includes planarians of elongate body and spatula-like anterior end. Although most land planarians native from South America have dorsal testes, ''Timyma'' has ventral testes, which at first suggested that it is related to the Australasia species of the tribe Caenoplanini Caenoplanini is a tribe of land planarians in the subfamily Rhynchodeminae mostly found throughout the Australasian and Oceanian realms. Description The tribe Caenoplanini is defined as containing land planarians with multiple eyes along the bod .... However, the longitudinal cutaneous musculature of ''Timyma'' is very weak, differently from other genera in this tribe. However, molecular studies confirmed that it is more closely related to other land planarians in South America, having a sister-group relationship with the subfamily Geoplaninae. The copulatory apparatus la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timyma Olmuensis
''Timyma'' is a genus of land planarians from Chile. It is the sole genus of the subfamily Timyminae. Description The genus ''Timyma'' includes planarians of elongate body and spatula-like anterior end. Although most land planarians native from South America have dorsal testes, ''Timyma'' has ventral testes, which at first suggested that it is related to the Australasia species of the tribe Caenoplanini. However, the longitudinal cutaneous musculature of ''Timyma'' is very weak, differently from other genera in this tribe. However, molecular studies confirmed that it is more closely related to other land planarians in South America, having a sister-group relationship with the subfamily Geoplaninae. The copulatory apparatus lacks adenodactyls and a permanent penis papilla. Species There are currently two species recognised in the genus ''Timyma'': * ''Timyma juliae ''Timyma'' is a genus of land planarians from Chile. It is the sole genus of the subfamily Timyminae. Des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geoplanidae
Geoplanidae is a family of flatworms known commonly as land planarians or land flatworms. These flatworms are mainly predators of other invertebrates, which they hunt, attack and capture using physical force and the adhesive and digestive properties of their mucus. They lack water-retaining mechanisms and are therefore very sensitive to humidity variations of their environment. Because of their strict ecological requirements, some species have been proposed as indicators of the conservation state of their habitats. They are generally animals with low vagility (dispersal ability) and with very specific habitat requirements, so they can be also used to accurately determine the distribution of biogeographic realms. Today the fauna of these animals is being studied to select conservation priorities in the Atlantic rainforest in Brazil. At the other extreme, one species in this family, ''Platydemus manokwari'' has become an invasive species in both disturbed and wild habitats in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eudóxia Maria Froehlich
Eudóxia Maria Froehlich (21 October 1928 – 26 September 2015) was a Brazilian zoologist. Life Born in 1928, Eudóxia Maria de Oliveira Pinto was the daughter of Alice Alves de Camargo and the ornithologist Olivério Mário de Oliveira Pinto. Since she was a child, her parents used to take her and her siblings to the wooded areas near São Paulo, which helped her to become interested in zoology, especially small animals.Carbayo, F. (2013) "Vida de Zoólogo: Eudóxia Maria Froehlich." ''Informativo da Sociedade Brasileira de Zoologia'' 106: 7–10. After finishing High School, she spent six months in Rio de Janeiro with an uncle who was a physician and returned home interested in studying medicine. Her father did not approve the idea, considering it an inappropriate career for a woman, and suggested her to study natural history and so she did. During this time she became engaged to Claudio Gilberto Froehlich, one of her colleagues. In 1951 she and Froehlich started their doct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australasia
Australasia is a region that comprises Australia, New Zealand and some neighbouring islands in the Pacific Ocean. The term is used in a number of different contexts, including geopolitically, physiogeographically, philologically, and ecologically, where the term covers several slightly different, but related regions. Derivation and definitions Charles de Brosses coined the term (as French ''Australasie'') in ''Histoire des navigations aux terres australes'' (1756). He derived it from the Latin for "south of Asia" and differentiated the area from Polynesia (to the east) and the southeast Pacific (Magellanica). In the late 19th century, the term Australasia was used in reference to the "Australasian colonies". In this sense it related specifically to the British colonies south of Asia: New South Wales, Queensland, South Australia, Tasmania, Western Australia, Victoria (i.e., the Australian colonies) and New Zealand. Australasia found continued geopolitical attention in the earl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caenoplanini
Caenoplanini is a tribe of land planarians in the subfamily Rhynchodeminae mostly found throughout the Australasian and Oceanian realms. Description The tribe Caenoplanini is defined as containing land planarians with multiple eyes along the body, which do not spread dorsally, ventrally located testes and a thick layer of longitudinal muscles. Phylogeny and systematics Based on morphological evidence, species now classified as Caenoplanini were initially considered a subfamily, Caenoplaninae, and sister group of the subfamily Geoplaninae. Both were united by the presence of multiple eyes along the body and distinguished from each other by the presence of dorsal testes in Geoplaninae and ventral ones in Caenoplaninae. However, molecular studies revealed that this classification was artificial and that Caenoplaninae were actually closely related to Rhynchodeminae. Therefore, recent classification puts the former subfamilies Rhynchodeminae and Caenoplaninae as tribes, respectively ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geoplaninae
Geoplaninae is a subfamily of land planarians endemic to the Neotropical region. However, one species, ''Obama nungara'' has been introduced in Europe. Description The subfamily Geoplaninae was initially defined by Ogren and Kawakatsu (1990)Ogren, R. E. and Kawakatsu, M. (1990). ''Index to the species of the family Geoplanidae (Turbellaria, Tricladida, Terricola) Part I: Geoplaninae.'' Bulletin of Fujis Women's College. 29: 79-166. for land planarians which have a broad creeping sole, mouth in the second half of the body, dorsal testes, subepithelial longitudinal musculature well developed and parenchymal longitudinal musculature absent or not well developed. The eyes contour the anterior region in a single row and posteriorly form several rows, which may spread onto the dorsum, and extend to the posterior end of the body. However, most, if not all, of these characteristics are not exclusive and cannot be considered a synapomorphy of the group. Some characteristics have also been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reproductive System Of Planarians
The reproductive system of planarians is broadly similar among different families, although the associated structures can vary in complexity. All planarians are hermaphrodites, so their reproductive system has a male and a female part. Both parts communicate with the surface of the body via a single opening called gonopore, which is located on the ventral side of the posterior half of the body. Male part of the reproductive system The male part of the reproductive system in planarians has a set of several testicles, distributed throughout the body in two or more rows. They are usually concentrated in the anterior two thirds of the body, although they can reach close to the posterior end. The testicles are connected to a pair of sperm ducts which run posteriorly towards the gonopore. In some groups, the sperm ducts met in their distal part, forming the ejaculatory duct, which then opens in a cavity called “male atrium”. In others, like land planarians, both open in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
