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Placobdelloides Siamensis
''Placobdelloides siamensis '' is a species of blood-feeding jawless leech in the family Glossiphoniidae.Oka, A. 1917. Zoological Results of a Tour in the Far East, pt. III. Hirudinea. Memoirs of the Asiatic Society of Bengal, VI, pp. 157-176, pl. VII.Sawyer, R.T. 1986: Leech biology and behaviour. Volume II. Feeding biology, ecology, and systematics. Clarendon Press, Oxford. It is commonly known as the Siam shield leech and is a prevalent ectoparasite on Malayemys turtles but has a range of Geoemydidae hosts. In high numbers it can cause severe anaemia and malnutrition which can lead to the death of its host. Taxonomy The species was first described as ''Hemiclepsis siamensis'' by Oka in 1917 then transferred by Sawyer to his new genus '' Placobdelloides'' in 1986. In 2018, it was redescribed from specimens collected in Thailand. Hosts The type host is the Black Marsh Turtle, '' Siebenrockiella crassicollis''. Other hosts include the Southeast Asian Box Turtle, ''Cuora amboi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malayemys Subtrijuga
The Mekong snail-eating turtle (''Malayemys subtrijuga'') is a species of turtle in the family Geoemydidae. It was monotypic within the genus ''Malayemys'' until Brophy (2004, 2005) reevaluated (based on morphology) ''Malayemys macrocephala'' (Gray, 1859),Gray, John Edward. (1859). Description of a new species of freshwater tortoise from Siam. ''Proceedings of the Zoological Society of London'' 1859(27):478–479. which has been long time considered to be a synonym of ''M. subtrijuga''. Distribution The Mekong snail-eating turtle is found in the Mekong River basin of Cambodia, Laos, southern Vietnam, and Thailand and the northern Malay Peninsula, and Java, Indonesia. It could have been introduced to Java via human intervention from the Mekong River Basin. The occurrence of the species in Indonesia is regarded by Brophy (2005) to be allochthonous, i.e., non-native (Sumatra Sumatra is one of the Sunda Islands of western Indonesia. It is the largest island that is fully wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Invertebrates Of China
Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate subphylum Vertebrata. Familiar examples of invertebrates include arthropods, mollusks, annelids, echinoderms and cnidarians. The majority of animal species are invertebrates; one estimate puts the figure at 97%. Many invertebrate taxa have a greater number and variety of species than the entire subphylum of Vertebrata. Invertebrates vary widely in size, from 50 μm (0.002 in) rotifers to the 9–10 m (30–33 ft) colossal squid. Some so-called invertebrates, such as the Tunicata and Cephalochordata, are more closely related to vertebrates than to other invertebrates. This makes the invertebrates paraphyletic, so the term has little meaning in taxonomy. Etymology The word "invertebrate" comes from the Latin word ''vertebra'', which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parasites Of Reptiles
Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The entomologist E. O. Wilson has characterised parasites as "predators that eat prey in units of less than one". Parasites include single-celled protozoans such as the agents of malaria, sleeping sickness, and amoebic dysentery; animals such as hookworms, lice, mosquitoes, and vampire bats; fungi such as honey fungus and the agents of ringworm; and plants such as mistletoe, dodder, and the broomrapes. There are six major parasitic strategies of exploitation of animal hosts, namely parasitic castration, directly transmitted parasitism (by contact), trophicallytransmitted parasitism (by being eaten), vector-transmitted parasitism, parasitoidism, and micropredation. One major axis of classification concerns invasiveness: an endoparasite lives inside the host's body; an ect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leeches
Leeches are segmented parasitism, parasitic or Predation, predatory worms that comprise the Class (biology), subclass Hirudinea within the phylum Annelida. They are closely related to the Oligochaeta, oligochaetes, which include the earthworm, and like them have soft, muscular segmented bodies that can lengthen and contract. Both groups are hermaphrodites and have a clitellum, but leeches typically differ from the oligochaetes in having suckers at both ends and in having ring markings that do not correspond with their internal segmentation. The body is muscular and relatively solid, and the coelom, the spacious body cavity found in other annelids, is reduced to small channels. The majority of leeches live in freshwater habitats, while some species can be found in terrestrial or marine environments. The best-known species, such as the medicinal leech, ''Hirudo medicinalis'', are hematophagous, attaching themselves to a host with a sucker and feeding on blood, having first secr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heosemys Grandis
The giant Asian pond turtle (''Heosemys grandis'') inhabits rivers, streams, marshes, and rice paddies from estuarine lowlands to moderate altitudes (up to about ) throughout Cambodia and Vietnam and in parts of Laos, Malaysia, Myanmar and Thailand. Description Slight variations in coloration can be seen among the species. The carapace of the giant Asian pond turtle has a brown to black coloration with a distinct ridge along the center while the plastron is yellow in color. The head is gray to brown in color. Habitat and behavior Capable of living in water or on land the giant Asian pond turtle can be located along bodies of water such as lakes, ponds, rivers, streams, and canals. The giant Asian pond turtle is omnivorous and finds food in both aquatic and terrestrial environments. Their diets consist of worms, larvae, insects, snails, deceased animals, and aquatic and terrestrial plants. Similarly to other species of turtles, the giant Asian pond turtle has developed adaptation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclemys Oldhamii
Oldham's leaf turtle (''Cyclemys oldhamii'') is a species of turtle in the family Geoemydidae. Etymology Both the specific name, ''oldhamii'', and the common name, Oldham's leaf turtle, are in honor of Thomas Oldham, Superintendent of the Geological Survey of India. The generic name ''Cyclemys'' comes from the Greek κύκλος (kyklos, meaning 'round' or 'circle', referring to the shape of the carapace) and εμύς (emys; 'freshwater turtle'). Geographic range ''C. oldhamii'' is found in Bangladesh, in the terai of mizoram, in Myanmar, Thailand, Vietnam, West Borneo, Sumatra and Java. In addition, ''Cyclemys oldhami shanensis'' – sometimes considered a distinct species due to its shell pattern, oft described as looking similar to aged meat - occurs from central Myanmar to Thailand and Cambodia. The type locality was originally given as "Mergui and Siam", and restricted to Mergui by Smith (1931). Gallery Image:Cyclemys_male_and_female_shell.jpg, ''Cyclemys oldhamii'' carap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
