The morphology of an unique population of corynosoma. Pusa caspica and was exemplified at the gross, light microscopy lm and electron microscopy em levels. Pusa is a genus of the earless seals, within the family phocidae. Mammal species of the world a taxonomic and geographic reference. The baikal seal pusa sibirica belongs to the genus pusa, along with the other two species that make up this widely allopatric groupingthe ringed seal p. One comb jelly species has been introduced into the caspian sea mnemiopsis leidyi. Improved understanding of pinniped evolution may allow us to identify important drivers and constraints towards adaptation to marine environments.
Historical decline of the caspian seal pusa caspica it is unclear how many seals remain in the caspian sea. The role of canine distemper virus and persistent organic. The morphology of an unique population of corynosoma strumosum acanthocephala, polymorphidae from the caspian seal, pusa caspica, in the landlocked. Between 1997 and 2001, caspian seals pusa caspica suffered a series of mass mortalities, affecting s of animals, which raised. Culturedriven mortality in caspian seal pusa caspica at southern fringe of caspian sea. Pusa caspica zt2 download library wiki fandom powered. Historical decline of the caspian seal pusa caspica gridarendal. Breeding behavior and pup development of the caspian seal. Assessing species abundance and reproductive output is crucial for evaluations of population dynamics, conservation status and the development of management objectives. The caspian seal pusa caspica is a key predator in the caspian sea ecosystem and is listed as endangered by iucn. Pdf breeding behavior and pup development of the caspian seal. The caspian seal, pusa caspica, is an icebreeding phocid endemic to the caspian sea. Media in category pusa caspica museum specimens the following 3 files are in this category, out of 3 total. From a population estimated at more than one million in the early years of the twentieth century, population estimates now vary between 110 000 and 350 000.
Wildscreens arkive project was launched in 2003 and grew to become the worlds biggest encyclopaedia of life on earth. The caspian seal pusa caspica population has declined by more than 90 per. An pusa caspica in nahilalakip ha genus nga pusa, ngan familia nga phocidae. The caspian seal pusa caspica is one of the smallest members of the earless seal family and unique in that it is found exclusively in the brackish caspian sea. Historical decline of the caspian seal pusa caspica. Caspian seal pusa caspica animalsaquaticsealcaspian.
Polymorphidae from the caspian seal, pusa caspica, in the landlocked caspian sea using sem, with special notes on histopathology. The checked caspian seal probably being died of canine distemper virus and was found host to numerous parasites of four helminth species. The invasion of this jelly during the late 1990s represents one of the main environmental issues in this unique ecosystem, and is considered as one of the worlds major marine ecosystem invasive species occurrences. Pinnipeds seals, sea lions, and walruses are the second most diverse clade of marine mammals alive today 36 species. To ukljucuje rusiju, skandinaviju, britaniju, grenland, kanadu, sjedinjene americke drzave, iran, azerbajdzan. An increased plasma level of total thyroxine was found. Hrvatska enciklopedija tri vrste ovoga roda nastanjuju arkticka i subarkticka podrucja te podrucja oko kaspijskoga jezera. The morphology of an unique population of corynosoma strumosum acanthocephala, polymorphidae from the caspian seal, pusa caspica, in the landlocked caspian sea using sem, with special notes on histopathology. An increased plasma level of total thyroxine was found in seals during the molting season. Mass mortalities due to canine distemper virus cdv occurred in caspian seals pusa caspica, in spring of 1997, 2000 and 2001, but the potential role of organochlorine exposure in these epizootics remains undetermined. The caspian seal pusa caspica is a smallbodied phocid pinniped, belonging to the phocina group of northern true seals. Pdf culturedriven mortality in caspian seal pusa caspica. The three species of this genus were split from the genus phoca, and some sources still give phoca as an acceptable synonym for pusa.
Acanthocephala, polymorphidae from the caspian seal, pusa. Here we report on fixedwing aerial strip transect surveys of the breeding population on the caspian sea. Pdf the role of canine distemper virus and persistent. The three species in this genus are found in arctic and subarctic regions, as well as around the caspian sea. Comparison of trace element accumulation in baikal seals.
This page was last edited on 14 september 2017, at 23. Click download from the datasheet actions bar explained in this article. An pusa caspica in uska species han mammalia nga syahan ginhulagway ni gmelin hadton 1788. All structured data from the file and property namespaces is available under the creative commons cc0 license. Here, we report behavioral observations of 518 motherpup pairs and 210 lone pups, made from the bridge of icebreakers traversing seal breeding grounds while servicing oil installations in the northeastern caspian sea, during 34 trips from late. Pusa caspica the caspian seal pusa caspica is one of the smallest members of the earless seal family and unique in that it is found exclusively in the brackish caspian sea. Pdf due to a decline exceeding 70% over the last three generations, reduction in the number of sites used range reduction within the overall.
Caspian seal pusa caspica is countered as a unique, endangered species, restricted only to the caspian sea. Tri su vrste ovoga roda razdvojene od roda phoca i neki izvori jos uvijek daju phoca kao prihvatljivi sinonim za pusa, npr. The enigma of the landlocked baikal and caspian seals. The species have been united with the arctic ringed seal, phoca hispida, into subgenus pusa, but the age and route of invasions tofrom the continental basins remain controversial. It covers approximately 400 000 square kilometres an area slightly larger than germany.
High death rate of caspian seal has been reported owing to chemical infections, extreme concentration of chemical trace elements, organochlorine pollutants, etc. Main objective of this study was to investigate the invasive activity of the liver fluke, pseudamphistomom truncatum against the caspian seal pusa caspica and was exemplified at the gross, light microscopy lm and electron microscopy em levels. Goodman5 1tara seal research centre, killyleagh, county down, northern ireland, united kingdom, 2institute of geology, baku, azerbaijan, 3faculty of fisheries, nagasaki. The endemic seals of lake baikal phoca sibirica and of the caspian sea phoca caspica inhabit ancient continental basins that have remained isolated from primary marine seal habitats for millions of years. Ultrastructural study of pseudamphistomum truncatum. Interyear variation in pup production of caspian seals. A histopathology study of caspian seal pusa caspica phocidae. Pdf caspian seal pusa caspica is countered as a unique, endangered species, restricted only to the caspian sea. In winter, and cooler parts of the spring and autumn season, these marine mammals populate the. Based on mtdna haplotypes, caspian seals were derived from the common ancient type of pusa 60 million years ago and were subsequently isolated in the caspian sea. Pagka karon wala pay siak nga nalista ubos niini niya.
Artiodaktiloen barruko phocidae familian sailkatuta dago. How the comb jelly mnemiopsis leidyi is spreading in the. It is endemic to the caspian sea in central asia, the worlds largest landlocked water body. Mass mortalities due to canine distemper virus cdv occurred in caspian seals pusa caspica, in spring of 1997, 2000 and 2001, but the potential role of organochlorine exposure in. Comparison of trace element accumulation in baikal seals pusa sibirica, caspian seals pusa caspica and northern fur seals callorhinus ursinus tokutaka. This page was last edited on 17 december 2019, at 11. Baikal seals were derived from a ringedseallike ancestor in. The principle cause of the decline was unsustainable. In species where pups are born on ice, females tend to be more. Under this hypothesis, pusa should make a phylogenetically distinct cluster, diverged from the remaining phocines including p. They can be found not only along the shorelines, but also on the many rocky islands and floating blocks of ice that dot. Caspian seal austroraptor zt2 download library wiki. Files are available under licenses specified on their description page. The caspian seal pusa caspica population has declined by more than 90 per cent since the start of the 20th century, falling from more than 1 million individuals in 1900 to around 100 000 today cep, 2007.
However, it is not a legal authority for statutory or regulatory purposes. The role of canine distemper virus and persistent organic pollutants in mortality patterns of caspian seals pusa caspica susan c. Here, we report behavioral observations of 518 motherpup pairs mps and 210 lone pups lps, made from the bridge of icebreakers traversing seal breeding grounds while servicing oil installations in the northeastern. Environmental pollution vol 127, issue 1, pages 1156. The study was done on a freshly dead caspian seal in the southern coast of caspian sea. Baikal, caspian pusa caspica, spotted, harp and ribbon give birth on pack ice or fast ice and mate in the water. Here we integrate caspian seal mortality data spanning 19712008, with data on age, body condition, pathology and blubber organochlorine concentration for carcases stranded between 1997 and 2002. While every effort has been made to provide the most reliable and uptodate information available, ultimate legal requirements with respect to species are contained in.
Culturedriven mortality in caspian seal pusa caspica at southern fringe. Some of these papers may be downloaded directly from the attachments below. Historical decline of the caspian seal pusa caspica historical decline of the caspian seal pusa caspica it is unclear how many seals remain in the caspian sea. Zt2 download library wiki is a fandom games community. The breeding behavior of this species is poorly documented. Fandom apps take your favorite fandoms with you and never miss a beat. Interyear variation in pup production of caspian seals pusa. Caspian seal pusa caspica may refer to the following downloads. Caspian seal austroraptor caspian seal pusa caspica may refer to the following downloads. The role of canine distemper virus and persistent organic pollutants in mortality patterns of caspian seals pusa caspica. Caspian seal pusa caspica public domain image from section. However, at present there are only around 7 to 15 thousand breeding females, meaning the population has very low reproductive capacity. Pdf the caspian seal, pusa caspica, is an icebreeding phocid endemic to the caspian sea.
The levels of thyroid hormones total thyroxine, free thyroxine, and total triiodothyronine in the blood serum of the caspian seal pusa caspica are reported for the first time. Culturedriven mortality in caspian seal pusa caspica at. Among numerous possible reasons for mortality of caspian seals, the role of culture in mortality has always been less. A histopathology study of caspian seal pusa caspica. It is distributed throughout the caspian sea from avantdeltas of the volga and ural rivers to the iranian coasts. Breeding behavior and pup development of the caspian seal, pusa.
Comparison of trace element accumulation in baikal seals pusa sibirica, caspian seals pusa caspica and northern fur seals callorhinus ursinus author links open overlay panel tokutaka ikemoto a takashi kunito a 1 izumi watanabe b genta yasunaga a 2 norihisa baba c nobuyuki miyazaki d evgeny a. The caspian sea runs north and south, extending over 1 200 kilometres, with an average width of 320 kilometres, with 7 000 km coastline. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Quantitative analysis of thyroid hormone levels in the. Baikal seals are uniformly dark silver gray dorsally and light yellowish gray ventrally fig. Pdf breeding behavior and pup development of the caspian. Although hawaiian monk seals and harbor seals give birth to their offspring on land, they too mate in the water. The caspian seal pusa caspica is a key predator in the caspian sea ecosystem and is listed as endangered by the iucn. Espesye sa mamipero nga una nga gihulagway ni gmelin ni adtong 1788 ang pusa caspica. Historical decline of the caspian seal pusa caspica grid.
Pdf the morphology of an unique population of corynosoma. With the help of over 7,000 of the worlds best wildlife filmmakers and photographers, conservationists and scientists, featured multimedia factfiles for more than 16,000 endangered species. Ang pusa caspica sakop sa kahenera nga pusa sa kabanay nga phocidae. The endemic seals of lake baikal phoca sibirica and of the caspian sea phoca caspica inhabit ancient continental basins that have remained isolated from primary marine seal habitats for millions. Culturedriven mortality in caspian seal pusa caspica at southern. The population of the region is about 14 million, distributed over the coastal provinces of five countries. They are found not only along the shorelines, but also on the many rocky islands and floating blocks of ice that dot the caspian sea. Download fulltext pdf download fulltext pdf download fulltext pdf. Itis taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. Pusa caspica is one of the smallest members of the earless seal family phocidae and unique in that it is found exclusively in the brackish caspian sea and endemic to it. The serum levels of thyroid hormones in caspian seal were comparable to those in the harbor seal phoca vitulina. Here, we report behavioral observations of 518 motherpup pairs mps and 210 lone pups lps, made from the bridge of icebreakers traversing seal breeding grounds while servicing oil installations in the northeastern caspian sea, during. The caspian seal pusa caspica is one of the smallest members of the earless seal family and. Ginklasipika han iucn an species komo nangangaratan.
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