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measuring ecosystem diversity is not easy and ther e is no definite index for its measurement it is generally assessed by the measure of species
how is l monoctogenes infection transmittedlistriosis caused by listeria monocytogenes infectiontransmitted by animal excretions faecal matter and
this method makes use of a common but peculiar group of dna sequences known as minisatellites high levels of variation in the numbers of these
q explain restricted fragment polymorphismthis method makes use of a group of enzymes termed restriction enzymes which recognise particular sequence
q protein electrophoresis - measuring genetic diversitythis method is now being used to measure genetic diversity genes contain the information
what is yersiniosis give its symptomsyersiniosis caused by the bacteria yersinia enterolytica bull causes severe abdominal pain fever and
what are the symptoms and foods associated with campylobacteriosis campylobacteriosis incubation period 2-5 days after ingestion of contaminated
give the causative organism and symptoms of bacillary dysentery bull bacillary dysentery is caused by shigella sp shigella sonnei s dysenteraei
from an ecological point of view species richness alone has limited value more meaningful measures use the number of different species in a given
q what is taxonomic diversitytaxonomic diversity is relative abundance of a species as well as the ancestor descendant relationships of species to
q explain about gamma diversitygamma g richness refers to the rate of change across larger landscape gradients and gamma diversity is a measure of
q what do you mean by alpha diversity alpha a richness refers to the number of species found in small homogenous area alpha diversity refers to the
how do you prevent food borne infectionprevention of food borne infections avoid consumption of contaminated foods and water eat properly cooked
q describe the complex spatial patterns of biodiversityto describe the complex spatial patterns of biodiversity ecologists and biogeographers have
briefly discuss the salmonella food infectionbull salmonella food infection is caused by salmonella gastroenteritis transmitted by faecal
the measurement of species diversity provides an important preliminary assessment of overall biodiversity there are many ways by which species
conservation and management of biodiversity require measurement of biodiversity because it is important to make choices about what where and how to
q describe ecosystem diversityecosystem diversity means the variation between different types of ecosystems different species of animals plants and
the distinct ecological importance of species supports functional diversity and has a direct bearing on the species composition of the site and
q explain about ecological species conceptthe ecological species concept this identifies a species as a population that occupies a distinct
the evolutionary species concept which identifies a species as a lineage ie ancestor descendant sequence of population evolving separately from
define listeriosis monocytogenes l monocytogenes can grow over the temperature range of about 10 to 450c and the ph range 41 to around 96 it maybe
q phylogenetic species concept taxonomists scientists who compare classify and name organisms tend to describe a species by studying their physical
q biological species concepta biological species as defined by ernst mayr are groups of actually or potentially interbreeding natural populations
species diversityspecies diversity means the differences between species both domesticate d and wild it is the most visible component of biodiversity