WHAT IS PARASITISM? Definition of parasitism, Parasitism is a feeding relationship or association between two organisms, in which the parasite lives in or on the body of the host,
deriving benefit from and causing harm to it while the host loses in the process. The study of biology, chemistry and physics has brought a lot of discoveries in regard to things seen and unseen.
the rare name parasitism is not common in some parts of the world like in Africa. what people have idea of in old times is just that someone is sick and needs to be treated.
so many means were deployed in order to cure the sickness. the missing link in most nations of the world in the lack of advanced technological equipment for the purpose of proper documentation of parasitism
how does parasitism works?
this is a one-sided relationship affair between two organisms of different species. in parasitism, the parasite lives either inside or outside of the host from which it derives its nutrients for daily metabolic activities.
some parasites live as endoparasites or ectoparasites. you can read my post on ectoparasite or endo-parasite here
In other words, parasitism is a close association between two organisms in which one, known as the PARASITE, lives on or in and feeds on the expense of the other known as the HOST. The parasite benefits from the association while the host suffers
Typical examples of parasitism are
MAN AND THE TAPEWORM AS AN EXAMPLE OF ENDO-PARASITISM
The tapeworm is a parasite that lives in the small intestine of man, where it derives the benefits of a habitat, protection and food.
The man who s the host suffers because he loses to the tape worm parts of the food he has eaten and digested
MISTLETOE AND FLOWERING PLAN
The mistletoe is a plant parasite that lives on other larger flowering plants. The mistletoe benefits because the host gives its support and raises it to a position from which it can receive sunlight.
The parasite also derives water and mineral salts from the host while the host suffers harm by losing to the parasite part of the water and mineral salts that it has absorbed
FUNGAL PARASITES OF HOST PLANTS INCLUDE
Ustilago on maize, Ustilago is the largest genus in the Ustilaginales, with approximately 300 species, and most species parasitize monocotyledonous hosts.
Teliospores of Ustilago spp. typically germinate with a cylindrical, mostly four-celled basidium. Each basidial cell repeatedly buds off basidiospores (=sporidia), which produce the haploid yeast state.
Puccinia on maize, wheat or barley. Puccinia is a genus of fungi. All species in this genus are obligate plant pathogens and are known as rusts.
The genus contains about 4000 species. The genus name Puccinia is in honour of Tommaso Puccini (died 1735), who was an Italian doctor and botanist who taught Anatomy at the Hospital of Santa Maria Nuova in Florence
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Originally posted 2021-12-14 11:01:33.