lecture_22_Mar_05_filarial worms
... Each adult female worm produces millions of microscopic larvae (microfilariae), that migrate throughout the body to cause a variety of symptoms. In Onchocerciasis the larval stages cause the damage to the human hosts ...
... Each adult female worm produces millions of microscopic larvae (microfilariae), that migrate throughout the body to cause a variety of symptoms. In Onchocerciasis the larval stages cause the damage to the human hosts ...
- The University of Liverpool Repository
... offer insight into interactions and feedbacks across multiple scales of organization, from within ...
... offer insight into interactions and feedbacks across multiple scales of organization, from within ...
14.2
... Describe and give examples of three types of symbiosis. Mutualism - an interspecies interaction in which both species benefit from one another. Ex. The leaf cutter ants and the fungus they cultivate and harvest (we will see a video on this). They depend completely on one another. Commensalism - An a ...
... Describe and give examples of three types of symbiosis. Mutualism - an interspecies interaction in which both species benefit from one another. Ex. The leaf cutter ants and the fungus they cultivate and harvest (we will see a video on this). They depend completely on one another. Commensalism - An a ...
Dr. Caroline Lynch
... • Ensure immediate implementation of primaquine policy. • Create flexible fund for specific, answerable questions around interim antimalarial dosing and treatment o Part of broader recommendation on funding for Operational ...
... • Ensure immediate implementation of primaquine policy. • Create flexible fund for specific, answerable questions around interim antimalarial dosing and treatment o Part of broader recommendation on funding for Operational ...
Inter- and intraspecific parasitism interactions
... Vector-transmitted microparasites: determinants of Rp ...
... Vector-transmitted microparasites: determinants of Rp ...
Inter- and intraspecific parasitism
... X = number of host offspring * = mistakingly rejects own offspring instead of cuckoo offspring! ** = mistakingly rejects own offspring, despite there is no cuckoo in the nest!! *** = if the host kills own offspring by removing the parasite (e.g. breaks own eggs), term will be X – 2 .. ...
... X = number of host offspring * = mistakingly rejects own offspring instead of cuckoo offspring! ** = mistakingly rejects own offspring, despite there is no cuckoo in the nest!! *** = if the host kills own offspring by removing the parasite (e.g. breaks own eggs), term will be X – 2 .. ...
Interactions among organisms
... Is a close, long lasting, physical relationship between TWO different species. 3.1 Parasitism (+,-) • Is a relationship in which one organism (parasite) lives inside or on surface of another organism known as the host, from which it derives nourishment ...
... Is a close, long lasting, physical relationship between TWO different species. 3.1 Parasitism (+,-) • Is a relationship in which one organism (parasite) lives inside or on surface of another organism known as the host, from which it derives nourishment ...
Ecosystems
... Organisms within an ecosystem constantly interact in order to obtain resources for life, such as water, sunlight or even habitat (a place to live). Because of these constant interactions, organisms develop certain roles or niches in their ecosystems. A niche is the way in which a particular organism ...
... Organisms within an ecosystem constantly interact in order to obtain resources for life, such as water, sunlight or even habitat (a place to live). Because of these constant interactions, organisms develop certain roles or niches in their ecosystems. A niche is the way in which a particular organism ...
internal parasites of lizards from taiwan
... microscope the esophagus, stomach, and small and large intestines for helminths. The lungs were not examined. Some of the donated lizards were already dissected, and sometimes incomplete, in which case we examined them as far as possible. We cleared the helminths in a drop of undiluted glycerol on a ...
... microscope the esophagus, stomach, and small and large intestines for helminths. The lungs were not examined. Some of the donated lizards were already dissected, and sometimes incomplete, in which case we examined them as far as possible. We cleared the helminths in a drop of undiluted glycerol on a ...
What determines where particular species live and how many of
... – Consumer significantly reduces the resource ...
... – Consumer significantly reduces the resource ...
Evasion of Immunity I
... Characteristic ADCC reactions, i.e. killer cells directed against parasite by specific ab. – E.g. Eosinophil killing of parasite larvae by IgE. ...
... Characteristic ADCC reactions, i.e. killer cells directed against parasite by specific ab. – E.g. Eosinophil killing of parasite larvae by IgE. ...
SYMBIOSIS
... Parasitism: one individual known as the parasite, feeds on another individual, known as the host. Endoparasite- Internal Ectoparasite- External Commensalism: interaction in which one species benefits and the other is not affected. ...
... Parasitism: one individual known as the parasite, feeds on another individual, known as the host. Endoparasite- Internal Ectoparasite- External Commensalism: interaction in which one species benefits and the other is not affected. ...
Ecology
... long and thin with a large surface area which enables it to absorb a lot of nutrients from its host. Doesn’t kill the host. Produces many eggs Russo, Elise (2004). The Living Environment. Coordination group publications, Inc. ...
... long and thin with a large surface area which enables it to absorb a lot of nutrients from its host. Doesn’t kill the host. Produces many eggs Russo, Elise (2004). The Living Environment. Coordination group publications, Inc. ...
1 "PRINCIPLES OF PHYLOGENETICS: ECOLOGY AND
... parsimonious (or likely) trees, trees resulting from different character partitions, models of evolution, or methods of analysis, and comparisons with trees from the literature. -- Within an analysis of one clade, with different OTUs; trying to come up with a general tree for all OTUs, e.g. super tr ...
... parsimonious (or likely) trees, trees resulting from different character partitions, models of evolution, or methods of analysis, and comparisons with trees from the literature. -- Within an analysis of one clade, with different OTUs; trying to come up with a general tree for all OTUs, e.g. super tr ...
Parasitology Meets Ecology on Its Own Terms
... the definitions of theoretical terms are often best left to the science and its theoreticians (although we feel obliged to deal with some that are in very broad use in parasitology), whereas observational terms are more amenable to definition by convention. ...
... the definitions of theoretical terms are often best left to the science and its theoreticians (although we feel obliged to deal with some that are in very broad use in parasitology), whereas observational terms are more amenable to definition by convention. ...
Ecosystems & Their Components
... Can be among members of same or different species Occurs when organisms share same niche Ex: Hawks and fox eat mice Results in decrease in population of species that is less adapted to compete ...
... Can be among members of same or different species Occurs when organisms share same niche Ex: Hawks and fox eat mice Results in decrease in population of species that is less adapted to compete ...
File
... number of prey to decline. • As there is less food, more competition occurs and the predator either dies, or must move, causing their numbers to decline as well. ...
... number of prey to decline. • As there is less food, more competition occurs and the predator either dies, or must move, causing their numbers to decline as well. ...
Study of fragmented fossil diatoms using an invariant
... parasitology of the wild “botete diana” show the existence of a diverse parasitic fauna. Monogeneans and digeneans have been identified and when the fish are transferred to captivity, parasites with a direct life - cycle reproduce rapidly resulting in parasitic diseases that can lead to fish mortali ...
... parasitology of the wild “botete diana” show the existence of a diverse parasitic fauna. Monogeneans and digeneans have been identified and when the fish are transferred to captivity, parasites with a direct life - cycle reproduce rapidly resulting in parasitic diseases that can lead to fish mortali ...
Unit 8: Community Interactions REVIEW GUIDE KEY Documentaries
... 15. What prevents herbivores from overgrazing the land? Natural enemies keep the herbivore population below the overgrazing levels 16. Predator-Prey Balance- How does the population of predator influence the population of prey? How does the population of prey influence the population of predator? W ...
... 15. What prevents herbivores from overgrazing the land? Natural enemies keep the herbivore population below the overgrazing levels 16. Predator-Prey Balance- How does the population of predator influence the population of prey? How does the population of prey influence the population of predator? W ...
Symbiotic Relationships
... • Parasite- The organism that benefits from parasitism – Usually smaller than the host – The parasite does not usually kill the organism it feeds on. If the host dies, the parasite could lose its source of food or ...
... • Parasite- The organism that benefits from parasitism – Usually smaller than the host – The parasite does not usually kill the organism it feeds on. If the host dies, the parasite could lose its source of food or ...
Is a healthy ecosystem one that is rich in parasites?
... focused on the functioning of a whole community; therefore the term must embrace the overall performance and persistence of the system. Thus, a healthy ecosystem is one that persists, maintains vigor (productivity), organization (biodiversity and predictability) and resilience (time to recovery) [6] ...
... focused on the functioning of a whole community; therefore the term must embrace the overall performance and persistence of the system. Thus, a healthy ecosystem is one that persists, maintains vigor (productivity), organization (biodiversity and predictability) and resilience (time to recovery) [6] ...
Symbiosis: I get by with a little help from my friends*.
... Food: What the organism eats, how it’s obtained, where is it on the food web? What eats it? Abiotic Conditions: Non-living things needed to survive (sun, temperature, water, salt water, fresh water, heat, protection, etc.) Behavior: When and how it reproduces, mating ...
... Food: What the organism eats, how it’s obtained, where is it on the food web? What eats it? Abiotic Conditions: Non-living things needed to survive (sun, temperature, water, salt water, fresh water, heat, protection, etc.) Behavior: When and how it reproduces, mating ...
Eperythrozoon Ovis (sp. nov.) Infection in Sheep. 3, 2, 1934,
... these two genera is the situation of the parasites which in the case of Eperythrozoon is epicellular or extracellular. As regards the result of infection with these different genera. Anaplasma in cattle causes a very severe disease characterised by extreme anaemia and the condition is frequently fat ...
... these two genera is the situation of the parasites which in the case of Eperythrozoon is epicellular or extracellular. As regards the result of infection with these different genera. Anaplasma in cattle causes a very severe disease characterised by extreme anaemia and the condition is frequently fat ...
Lecture 8 Exploitative and Mutualistic Species Interactions
... Snail-fluke（蜗牛-吸虫） infects snails and makes them seek light. Snails climb to the top of grasses where they are consumed by birds, the next host in the fluke’s lifecycle ...
... Snail-fluke（蜗牛-吸虫） infects snails and makes them seek light. Snails climb to the top of grasses where they are consumed by birds, the next host in the fluke’s lifecycle ...
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.