Species Competition
... Long term interaction between species Parasitism –when 1 species (parasite) feeds on part of another species (host) by living on or in it for a large portion of host's life. Commensalism – benefits one species but doesn't harm or help the other Mutualism – both species benefit ...
... Long term interaction between species Parasitism –when 1 species (parasite) feeds on part of another species (host) by living on or in it for a large portion of host's life. Commensalism – benefits one species but doesn't harm or help the other Mutualism – both species benefit ...
Interacting Parasites - Parasite Ecology Group
... arasitism is the most popular life-style parasite can cross-react with antigens from tion response of the immune system, making on Earth, and many vertebrates host similar parasite species (8). For this reason, it easier for certain protozoan parasites to sucmore than one kind of parasite at a infec ...
... arasitism is the most popular life-style parasite can cross-react with antigens from tion response of the immune system, making on Earth, and many vertebrates host similar parasite species (8). For this reason, it easier for certain protozoan parasites to sucmore than one kind of parasite at a infec ...
Environmental Science
... 11. What is similar about negative growth rate and zero growth rate? ______________________________ __________________________________________________________________________________ 12. What would be the result if a population did not replace its deaths with new births? _________________ __________ ...
... 11. What is similar about negative growth rate and zero growth rate? ______________________________ __________________________________________________________________________________ 12. What would be the result if a population did not replace its deaths with new births? _________________ __________ ...
Species Interactions
... The egrets feed off of lizards and insects forced out of hiding while the buffalo moves through the ...
... The egrets feed off of lizards and insects forced out of hiding while the buffalo moves through the ...
Lecture 14
... Parasitism: a relationship of two organisms living together (symbiosis) and one derives its nourishment at the expense of the other Parasite and host Parasitism has • Negative effect on hosts • But do not usually kill hosts Parasite consists of a wide range of organisms, including • Virus, bacteria, ...
... Parasitism: a relationship of two organisms living together (symbiosis) and one derives its nourishment at the expense of the other Parasite and host Parasitism has • Negative effect on hosts • But do not usually kill hosts Parasite consists of a wide range of organisms, including • Virus, bacteria, ...
Commensalism, mutualism, and parasitism are three
... normally use to maintain itself. The parasite, however, is unlikely to kill the host. This is because the parasite needs the host to complete its reproductive cycle by spreading to another host. The reproductive cycles of parasites are often very complex, sometimes requiring more than one host speci ...
... normally use to maintain itself. The parasite, however, is unlikely to kill the host. This is because the parasite needs the host to complete its reproductive cycle by spreading to another host. The reproductive cycles of parasites are often very complex, sometimes requiring more than one host speci ...
parasites and predators
... • A basic eating relationship between populations of different species. • Must be evaluated on the basis of its effects on populations, not on individuals. ...
... • A basic eating relationship between populations of different species. • Must be evaluated on the basis of its effects on populations, not on individuals. ...
SYMBIOSIS
... close association with the other, the host, which is harmed. • The harm and benefit in parasitic interactions concern the biological fitness of the organisms involved. Parasites reduce host fitness in many ways. Parasites increase their fitness by exploiting hosts for food, habitat and dispersal. ...
... close association with the other, the host, which is harmed. • The harm and benefit in parasitic interactions concern the biological fitness of the organisms involved. Parasites reduce host fitness in many ways. Parasites increase their fitness by exploiting hosts for food, habitat and dispersal. ...
Ecological Concepts Carrying Capacity
... disease, natural disasters, unusual weather) Acting together or separately, limiting factors determine the carrying capacity of a population Limiting factors keep most natural populations somewhere between extinction and over running the planet. ...
... disease, natural disasters, unusual weather) Acting together or separately, limiting factors determine the carrying capacity of a population Limiting factors keep most natural populations somewhere between extinction and over running the planet. ...
Notes - MIT Biology
... Strategies to survive and propagate different hosts i. Yersina pestis (plague blocks feeding of rat parasite to spread to different rats) ii. Trypanosoma brucei (different strains live in different hosts, but only make one host sick) Transmission and sexual cycle of Toxoplasma i. Infect cell, replic ...
... Strategies to survive and propagate different hosts i. Yersina pestis (plague blocks feeding of rat parasite to spread to different rats) ii. Trypanosoma brucei (different strains live in different hosts, but only make one host sick) Transmission and sexual cycle of Toxoplasma i. Infect cell, replic ...
No Slide Title
... Exploitation (Ch. 14) http://www.youtube.com/watch?v= -drpViV5LSw&feature=related ...
... Exploitation (Ch. 14) http://www.youtube.com/watch?v= -drpViV5LSw&feature=related ...
10.hostpops
... • Smallpox, plague, distemper, rinderpest, avian cholera, ticks and moose • Problem of lack of controls ...
... • Smallpox, plague, distemper, rinderpest, avian cholera, ticks and moose • Problem of lack of controls ...
Symbioses
... vertical (mother to baby – HIV, rubella) horizontal (amongst members of species) direct close contact – cold, measles sexual contact – HIV, syphilis indirect contact – polio, cholera (through water) vector contact – malaria, sleeping sickness ...
... vertical (mother to baby – HIV, rubella) horizontal (amongst members of species) direct close contact – cold, measles sexual contact – HIV, syphilis indirect contact – polio, cholera (through water) vector contact – malaria, sleeping sickness ...
Chapter 14: Populations
... species, and in nature predators and their prey usually coexist for long periods of time Prey develop defenses against their predators, and predators develop counter defenses Even with this accommodations, there is not always a balance between predators and prey ...
... species, and in nature predators and their prey usually coexist for long periods of time Prey develop defenses against their predators, and predators develop counter defenses Even with this accommodations, there is not always a balance between predators and prey ...
COMMON INTESTINAL PARASITES
... Phoresis: A biological association in which one animal is transported by another. Commensalism: Two organisms that live together, neither bearing a parasitic relation to the other, without harm or prejudice to either but with one or both members deriving benefit. Parasitism: Infestation with parasit ...
... Phoresis: A biological association in which one animal is transported by another. Commensalism: Two organisms that live together, neither bearing a parasitic relation to the other, without harm or prejudice to either but with one or both members deriving benefit. Parasitism: Infestation with parasit ...
عرض تقديمي من PowerPoint
... harm a larger organism (Host), and relies on said host for nutrients and shelter (a Niche). The parasite generally has a much higher reproductive capability compared to its host. ...
... harm a larger organism (Host), and relies on said host for nutrients and shelter (a Niche). The parasite generally has a much higher reproductive capability compared to its host. ...
Parasitism: The parasite niche
... • Traditionally, parasites have wrongly been considered to play a minor role in ecosystems • A recent study of temperate estuary ecosystem revealed parasite biomass to be equivalent to that of the predators (birds) within the same ...
... • Traditionally, parasites have wrongly been considered to play a minor role in ecosystems • A recent study of temperate estuary ecosystem revealed parasite biomass to be equivalent to that of the predators (birds) within the same ...
6.01 Animal management
... This can be accomplished by: Limit number of people who visit the farm Disinfect any equipment including footwear that is brought onto the farm from another location Sanitize and disinfect facilities, equipment, ect. Keep adequate distance from one farm facility to the next even when owned ...
... This can be accomplished by: Limit number of people who visit the farm Disinfect any equipment including footwear that is brought onto the farm from another location Sanitize and disinfect facilities, equipment, ect. Keep adequate distance from one farm facility to the next even when owned ...
Deterministic versus Stochastic Models
... Offspring size vs. offspring number Parental care Habitat Offspring survival Parental survival Time to sexual maturity ...
... Offspring size vs. offspring number Parental care Habitat Offspring survival Parental survival Time to sexual maturity ...
3.4 Community Interactions
... Organisms interact with each other when share same habitat or niche Types of interactions: ◦ Competition ◦ Predator/prey ◦ Symbiosis: two organisms in close, constant contact Commensalism Mutualism Parasitism ...
... Organisms interact with each other when share same habitat or niche Types of interactions: ◦ Competition ◦ Predator/prey ◦ Symbiosis: two organisms in close, constant contact Commensalism Mutualism Parasitism ...
CH13: PREDATION AND HERBIVORY
... d) million insect species and thousand understory plants live in tropical rainforest and nowhere else depend on the forest for habitat yet have little to no effect on the trees. 3. mutualism and commensalism can evolve in many different ways a) different types of ecological interaction can evolve in ...
... d) million insect species and thousand understory plants live in tropical rainforest and nowhere else depend on the forest for habitat yet have little to no effect on the trees. 3. mutualism and commensalism can evolve in many different ways a) different types of ecological interaction can evolve in ...
Instructor`s Copy
... trying to get the same requirement like food or space host – in a parasitic relationship, the host is the organism that “houses” and is harmed by the parasite mutualism – relationship where both organisms benefit parasite – the organism that lives in a host and gets nourishment from the host at the ...
... trying to get the same requirement like food or space host – in a parasitic relationship, the host is the organism that “houses” and is harmed by the parasite mutualism – relationship where both organisms benefit parasite – the organism that lives in a host and gets nourishment from the host at the ...
6 II. Science and Evolution A. Characteristics of a good scientific
... Diseases such as AIDS and STDs ...
... Diseases such as AIDS and STDs ...
Parasitism
In biology/ecology, parasitism is a non-mutual symbiotic relationship between species, where one species, the parasite, benefits at the expense of the other, the host. Traditionally parasite (in biological usage) referred primarily to organisms visible to the naked eye, or macroparasites (such as helminths). Parasite now includes microparasites, which are typically smaller, such as protozoa, viruses, and bacteria. Examples of parasites include the plants mistletoe and cuscuta, and animals such as hookworms.Unlike predators, parasites typically do not kill their host, are generally much smaller than their host, and will often live in or on their host for an extended period. Both are special cases of consumer-resource interactions. Parasites show a high degree of specialization, and reproduce at a faster rate than their hosts. Classic examples of parasitism include interactions between vertebrate hosts and tapeworms, flukes, the Plasmodium species, and fleas. Parasitism differs from the parasitoid relationship in that parasitoids generally kill their hosts.Parasites reduce host biological fitness by general or specialized pathology, such as parasitic castration and impairment of secondary sex characteristics, to the modification of host behavior. Parasites increase their own fitness by exploiting hosts for resources necessary for their survival, e.g. food, water, heat, habitat, and transmission. Although parasitism applies unambiguously to many cases, it is part of a continuum of types of interactions between species, rather than an exclusive category. In many cases, it is difficult to demonstrate harm to the host. In others, there may be no apparent specialization on the part of the parasite, or the interaction between the organisms may remain short-lived.