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Transversotrema Elegans
''Transversotrema elegans'' is a species of trematodes found from species of the labrid genus ''Choerodon'' on Heron Island and Lizard Island. It is characterised by its number of vitelline follicles enclosed by its cyclocoel and by the size of its testicle A testicle or testis (plural testes) is the male reproductive gland or gonad in all bilaterians, including humans. It is homologous to the female ovary. The functions of the testes are to produce both sperm and androgens, primarily testostero ....Biogeography of tropical Indo-West Pacific parasites: A cryptic species of Transversotrema and evidence for rarity of Transversotrematidae (Trematoda) in French Polynesia. Thomas H. Cribb, Robert D. Adlard, Rodney A. Bray, Pierre Sasal, Scott C.Cutmore, Parasitology International, Volume 63, Issue 2, April 2014, Pages 285-294, References Trematodes parasiting fish Plagiorchiida Animals described in 2010 {{Trematoda-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Labrid
The wrasses are a family, Labridae, of marine fish, many of which are brightly colored. The family is large and diverse, with over 600 species in 81 genera, which are divided into 9 subgroups or tribes. They are typically small, most of them less than long, although the largest, the humphead wrasse, can measure up to . They are efficient carnivores, feeding on a wide range of small invertebrates. Many smaller wrasses follow the feeding trails of larger fish, picking up invertebrates disturbed by their passing. Juveniles of some representatives of the genera '' Bodianus'', '' Epibulus'', ''Cirrhilabrus'', '' Oxycheilinus'', and ''Paracheilinus'' hide among the tentacles of the free-living mushroom corals & '' Heliofungia actiniformis''. The word "wrasse" comes from the Cornish word ''wragh'', a lenited form of ''gwragh'', meaning an old woman or hag, via Cornish dialect ''wrath''. It is related to the Welsh ''gwrach'' and Breton ''gwrac'h''. Distribution Most wrasses inhabit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Choerodon
''Choerodon'' is a genus of wrasses native to the Indian Ocean and the western Pacific Ocean. They are commonly referred to as tuskfish, because most species have sharp tusk-like teeth. Species The 24 currently recognized species in this genus are: * ''Choerodon anchorago'' (Marcus Elieser Bloch, Bloch, 1791) (orange-dotted tuskfish) * ''Choerodon azurio'' (David Starr Jordan, D. S. Jordan & John Otterbein Snyder, Snyder, 1901) (Azurio tuskfish) * ''Choerodon cauteroma'' Martin Fellows Gomon, M. F. Gomon & Gerald R. Allen, G. R. Allen, 1987 (bluespotted tuskfish) * ''Choerodon cephalotes'' (François Louis Nompar de Caumat de Laporte Castelnau, Castelnau, 1875) (purple tuskfish) * ''Choerodon cyanodus'' (John Richardson (naturalist), J. Richardson, 1843) (blue tuskfish) * ''Choerodon fasciatus'' (Albert Günther, Günther, 1867) (harlequin tuskfish) * ''Choerodon frenatus'' James Douglas Ogilby, J. D. Ogilby, 1910 (bridled tuskfish) * ''Choerodon gomoni'' G. R. Allen & John Ernest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heron Island (Queensland)
Heron Island is a coral cay located near the Tropic of Capricorn in the southern Great Barrier Reef, north-east of Gladstone, Queensland, Australia, and north-north-west of the state capital Brisbane. The island is situated on the leeward (western) side of Heron Reef, a fringing platform reef of significant biodiversity, supporting around 900 of the 1,500 fish species and 72% of the coral species found on the Great Barrier Reef.University of Queensland Centre for Marine StudiesIsland Research Station Retrieved 2006-JUL-14. During the summer months Heron Island is also home to over 200,000 birds including Noddy Terns and Mutton Birds. The island is about long and at its widest, giving an area of approximately . The highest point, near the western tip, is above sea level. A dune ridge along the southern shore rises some above sea level, lower dunes on the north-eastern side are only about above the sea. Heron Island and an extrapolated version of the research station ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lizard Island
Lizard Island is an island on the Great Barrier Reef in Queensland (Australia), northwest of Brisbane and part of the Lizard Island Group that also includes Palfrey Island. It is part of the Lizard Island National Park. Lizard Island is within the locality of Lizard in the Cook Shire. Geology Lizard Island is a granite island about 10 square kilometres in size, with three smaller islands nearby (Palfrey, South and Bird). Together these islands form the Lizard Island Group and their well-developed fringing reef encircles the deep Blue Lagoon. History Aboriginal Lizard Island was known as Dyiigurra to the Dingaal Aboriginal people and was regarded as a sacred place. It was used by the people for the initiation of young males and for the harvesting of shellfish, turtles, dugongs and fish. The Dingaal believed that the Lizard group of islands had been created in the Dreamtime. They saw it as a stingray with Lizard Island being the body and the other islands in the group fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vitelline Membrane
The vitelline membrane or vitelline envelope is a structure surrounding the outer surface of the plasma membrane of an ovum (the oolemma) or, in some animals (e.g., birds), the extracellular yolk and the oolemma. It is composed mostly of protein fibers, with protein receptors needed for sperm binding which, in turn, are bound to sperm plasma membrane receptors. The species-specificity between these receptors contributes to prevention of breeding between different species. It is called zona pellucida in mammals. Between the vitelline membrane and zona pellucida is a fluid-filled perivitelline space. As soon as the spermatozoon fuses with the ovum, signal transduction occurs, resulting in an increase of cytoplasmic calcium ions. This itself triggers the cortical reaction, which results in depositing several substances onto the vitelline membrane through exocytosis of the cortical granules, transforming it into a hard layer called the “fertilization membrane”, which serves as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Follicle (anatomy)
A follicle is a small, spherical or vase-like group of cells enclosing a cavity in which some other structure grows or other material is contained. Thyroid follicles make up the thyroid gland. Follicles are best known as the sockets from which hairs grow in humans and other mammals, but the bristles of annelid The annelids (Annelida , from Latin ', "little ring"), also known as the segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches. The species exist in and have adapted to various ecol ... worms also grow from such sockets. References {{reflist Skin anatomy Cells ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Testicle
A testicle or testis (plural testes) is the male reproductive gland or gonad in all bilaterians, including humans. It is homologous to the female ovary. The functions of the testes are to produce both sperm and androgens, primarily testosterone. Testosterone release is controlled by the anterior pituitary luteinizing hormone, whereas sperm production is controlled both by the anterior pituitary follicle-stimulating hormone and gonadal testosterone. Structure Appearance Males have two testicles of similar size contained within the scrotum, which is an extension of the abdominal wall. Scrotal asymmetry, in which one testicle extends farther down into the scrotum than the other, is common. This is because of the differences in the vasculature's anatomy. For 85% of men, the right testis hangs lower than the left one. Measurement and volume The volume of the testicle can be estimated by palpating it and comparing it to ellipsoids of known sizes. Another method is to use calip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trematodes Parasiting Fish
Trematoda is a class of flatworms known as flukes. They are obligate internal parasites with a complex life cycle requiring at least two hosts. The intermediate host, in which asexual reproduction occurs, is usually a snail. The definitive host, where the flukes sexually reproduce, is a vertebrate. Infection by trematodes can cause disease in all five traditional vertebrate classes: mammals, birds, amphibians, reptiles, and fish. Etymology Trematodes are commonly referred to as flukes. This term can be traced back to the Old English name for flounder, and refers to the flattened, rhomboidal shape of the organisms. Taxonomy There are 18,000 to 24,000 known species of trematodes, divided into two subclasses — the Aspidogastrea and the Digenea. Aspidogastrea is the smaller subclass, comprising 61 species. These flukes mainly infect bivalves and bony fishes.https://www.biotaxa.org/Zootaxa/article/view/zootaxa.3918.3.2 Digenea — which comprise the majority of trematodes — ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plagiorchiida
Plagiorchiida is a large order of trematodes, synonymous to Echinostomida. They belong to the Digenea, a large subclass of flukes. This order contains relatively few significant parasites of humans. The following families are placed here, organised by superfamily and suborder:Jones, A., Bray, R. A., & Gibson, D. I. (Eds.). (2002). ''Keys to the Trematoda'' (Vol. 1). CABI Publishing and The Natural History Museum. * Apocreadiata ** Apocreadioidea Skrjabin, 1942 *** Apocreadiidae Skrjabin, 1942 * Bivesiculata ** Bivesiculoidea *** Bivesiculidae Yamaguti, 1934 * Bucephalata ** Bucephaloidea Poche, 1907 *** Bucephalidae Poche, 1907 *** Nuitrematidae Kurochkin, 1975 * Echinostomata ** Echinostomatoidea Looss, 1902 *** Caballerotrematidae Tkach, Kudlai & Kostadinova, 2016 *** Calycodidae Dollfus, 1929 *** Cyclocoelidae Stossich, 1902 *** Echinochasmidae Odhner, 1910 *** Echinostomatidae Looss, 1899 *** Fasciolidae Railliet, 1895 *** Himasthlidae Odhner, 1910 *** Phil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
