Archive for the ‘Nothobranchius Furzeri killifish’ Category

Nothobranchius furzeri killifish distribution

notho furzeriIntensive collecting in southern Mozambique and the scope of potential external furzeri Nothobranchius among vertebrate species and records of the shorter lifespan as a model in aging research has found that, contrary to previous data, it is a widespread species. It ‘happened in a small swimming pool of the river south of the northern part of the preservation and Incomate River Limpopo River and other basins, Xie added mazimechopes still rich and Vaneteze river. Collected during February 2008 (second part of the rainy season), the strong inclination of the female population (an average of 28% of men in 19 groups), and a set of spatial patterns of gender bias in the population. The proportion of different groups of male color morphs. All members of the 14 male populations of the phenotype red, yellow, three populations of men and 12 of phenotypic mixing. Overall, the phenotype of the more common red, but there are strong regional variations as the ratio of the richest men in yellow and red on the outskirts of male superiority in the central basin of the River Limpopo, North furzeri. Nothobranchius furzeri same domain and orthonotus North (35% of the survey pool) and rachovii N. (27% of the site).habitat use analysis, to N. furzeri; North furzeri library primarily contains a soft muddy substrate and turbid water.

Introduction
Genus Nothobranchius (Cyprinodontiformes, Nothobranchiidae) is a group of
Small (range 3-15 cm, average 5 cm), short (3-12 months) distinct groups of fish habitats in the savannah regions of Central and Eastern Europe. Its distribution in southern Sudan, South Africa from KwaZulu-Natal (Wildekamp, 2004). The genus currently includes around 50 species described, is divided into five classes defined (Huber, 2000; Wildekamp, 2004). The history of life Nothobranchius is to adapt to its habitat dry years. After the start of the rainy season the fish hatch and grow quickly and become sexually mature in a few weeks. reach sexual maturity, they reproduce every 50-50 days and lay eggs a day for women (Haas, 1976a). Eggs produced at the bottom of the pool and stay dry. Although the habitat is dry, the survival of diapause in embryonic development, until the next rainy season (Wourms, 1972; Wildekamp, 2004). All the fish Nothobranchius is sexual dimorphism and color, men and women and a bright light yellow or brown. Bright color is a male sexual selection (Haas, 1976b) and particular species (Huber, 2000). Many species of color in different ways, either by domain or exotic (Huber, 2000; Wildekamp, 2004). The cooperation of different Nothobranchius species may occur in sympatry in the same pool (Huber, 2000).
The Nothobranchius furzeri Jubb has the shortest life expectancy recorded in all vertebrates (Valdesalici and Cellerino, 2003, but see Depczynski & Bellwood, 2005). In nature, its life is limited habitat exists, but its survival is also a short prison term, with a marked increase in mortality in the age of 6 weeks, the maximum duration of less than 12 weeks after hatching (Valdesalici and Cellerino, 2003). Furzeri as the mortality rate is inherent in the North, severe degradation of the maturation of the fish that organizations (such as the accumulation of lipofuscin in the liver) and the sharp decline of cognitive functions and spontaneous activity (Valenzano, etc.., 2006) , introduced a note furzeri as a species in the model of aging (Genadi so., 2005, Valenzano, etc.., 2006 b). It has been used to extend the life of Pharmacological Research (Valenzano and Cellerino, 2006), and provide a potential mechanism to investigate the genetic control of aging. Although the life line of laboratory display less than 3 months (Valdesalici and Cellerino, 2003), it is said that great changes in life expectancy and life history characteristics in different populations of North furzeri (Terzibasi so., In review ).
Current knowledge of distribution and natural history of North furzeri flawed. The species was described by the Gona re Zhou GD Mody reserves in Zimbabwe, where the fish were collected in the pan Sazale March 1968, in December 1968 and January 1969 (Jubb, 1971). Sazale Pan is 25 kilometers from the border with Mozambique, and into the river upstream Guluene, a pair of flow Hsieh Fu tributaries of the river in Mozambique, a major tributary of the river Chingovo. The basin Chingovo never reached since disappeared into the sea, a series of low marshes and inland lakes, large plain about 80 meters above sea level (asl). However, the topography of the region shows that the river system may have been connected to the Limpopo River Basin Pleistocene wet period is still in its downstream part by an increase River (Jubb, 1971 Skelton, 2001).
From his description, furzeri note has never been collected in the reserve week Gona new (the current conservation status upgraded to national park), until recently, only strain collected in those days in captivity, is to keep lovers. Gona another week, initially conceived as an extension of the South African Kruger National Park, the migration in 1960 to protect elephants, became the center of guerrilla activities, and was soon after poaching, which is N, and furzerirandomly selected later. In 1999, three new species found in North furzeri along the north bank of the Limpopo River in southern Mozambique (Wood, 2000). Interestingly, significant differences between the new population is seen as a new color, not two species (Wood, 2000).Although the population of North furzeri type exclusively male yellow strip at the edge of the caudal fin (Jubb, 1971), all three groups (side by side), collected in the Limpopo River Basin States are all male and red tail fin. Only when the F1 generation of prisoners was a mixture of red and yellow fish phenotype has been identified as a new form of N-type table, furzeri. From 2004 to 2007, when North furzeri been identified as species of Aging Model (Valdesalici and Cellerino, 2003) and field visit to Mozambique as a potential sampling points, collected six times to complete. In these collections, and some other people were found, including the population of a mixture of red and yellow phenotypes. Champion is one purpose of export of captive populations of wild fish to determine whether it is a hobby (by Waters in 2004, Hengstler in 2005, five, Gomez 2006), or in research laboratories (from A. Cellerino and colleagues in 2004, 2007 by S. & M’s Schories Schartl 2006 年) (Nothobranchius Maintenance Section, 2008; B Waters, personal communication). Unfortunately, there is no system for collecting, no distribution of accurate data, the parameters of population or habitat preferences are available.
data distribution, ecology and the population is essential to note furzeri fully appreciate the evolution of their research the origin and consequences of aging (Genadi so., 2005). In this study, a systematic survey of the population is 28 Note furzeri. In particular, (1) N series have been studied furzeri section 10 the degree of potential under the No furzeri Mozambique (2) the relationship between male color polymorphisms investigated, the majority of the population and sample (3) the habitat selection and habitat segregation furzeri between the North and other bacteria Nothobranchius. (Note furzeri with the same domain) were studied.