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4-2 ch5
4-2 ch5

...  Interference competition – when two or more organisms directly try to limit access to a resource (some humming birds defend particular trees)  Exploitation competition – when one group uses a resource faster than another, indirectly limits a resource  Ex. Plant removes nutrients/water from soil ...
interactions among organisms
interactions among organisms

... There are many levels of organization in ecology. They are: The Biosphere – All the area on the surface of earth and in the atmosphere that supports life. Ecosystem – A group of organisms living together and the ...
Species Relationships ppt Worksheet
Species Relationships ppt Worksheet

... • If the parasite kills the _________ then it may die too, so it does not usually do this. • Examples: ________________ and hookworms that live inside of an animal (the host) and get nutrients from them. • This interaction is also called parasite – host. Video Link Predation • An interaction where o ...
Biotic Interaction
Biotic Interaction

... Outcome of Competition •prey on best competitor •result in the persistence of a species that would be excluded •species determining outcome= ...
Let*s Review
Let*s Review

... ...


... whereas the parasitological information of these two species was obtained from Díaz & George-Nascimento (2002) and Flores & George-Nascimento (2009). We did not considered the information given by Muñoz-Muga & Muñoz (2010) because they recorded new parasites species that may be overlooked in previos ...
types of benefits: related terms: commensalism
types of benefits: related terms: commensalism

... individuals • nutrition: exchange of nutrients • protection: attack or remove predators, competitors, parasites (may be a combination) ...
Class: XI Subject: Biology Topic: Mode of Nutrition No. of
Class: XI Subject: Biology Topic: Mode of Nutrition No. of

... Saprophytes are non-green organisms which get their food from dead and decaying bodies. E.g. bacteria, fungi and some angiosperms. Monotrapa is known as indian pipe. It grows in the soil rich in humus. Birds nest orchid or Neottia also grows in forest in forest’s humus rich soil. Parasite get their ...
Barlow`s Brain Busters 5
Barlow`s Brain Busters 5

... 5. Using named examples outline the three ways by which parasites can be transmitted to new hosts. ...
A pest management glossary for growers
A pest management glossary for growers

... predatory mite that feeds on spider mites, eriophyid mites and others. Entomopathogenic – Insect killing. Factitious host - When you force a biological control agent to feed on an insect or mite that it would not feed on it in nature. Breeder pile. GMO – Genetically modified organism. An organism th ...
Is Infectious Disease Just Another Type of Predator
Is Infectious Disease Just Another Type of Predator

... (Grover 1995; Holt et al. 2003; Begon, chapter 1, this volume) or multiple nutrients provided within the tissues of a host/prey resource (Smith and Holt 1996; Sterner and Elser 2002), influence the ability of the parasite or predator to persist? In the separate-resource case, different resource spec ...
10/31 - Fairfield Faculty
10/31 - Fairfield Faculty

... plants extinct? Or Why is the world green? ...
2-2 and 2-3 Ecological roles, relationships and symbiosis
2-2 and 2-3 Ecological roles, relationships and symbiosis

...  Predator – Prey cycle = the population cycles that ...
Populations and Communities Section 2 Predator
Populations and Communities Section 2 Predator

... • The host is almost always larger than the parasite and is usually harmed but not killed. • Parasites often live on or in their host. Therefore, the parasite depends on its host not only for food but for a place to live as well. ...
S-8-9-2_Species Interactions Jigsaw Activity
S-8-9-2_Species Interactions Jigsaw Activity

... Example: Clownfish and sea anemone. The tentacles around the mouth of the sea anemone are used to eat many fish, but not the clownfish. The clownfish swims away from the anemone and captures food, then returns to the tentacles, which protects it from predators. The sea anemone eats food scraps that ...
to pdf - X
to pdf - X

... two organisms of different species. While it is often assumed that this relationship is mutually beneficial, it is, however, not always the case. Symbiotic relationships include mutualism, commensalism and parasitism. ...
Fasciolopsis buski
Fasciolopsis buski

... Fasciolopis buski infect both humans and pigs. After ingestion of the metacercariae, excystation occurs in the duodenum and the organism attaches to the wall of the small intestine where it resides. The adult form develops in about 3 months and produces unembryonated eggs, which are egested in the ...
Thrall, P. H., M. E. Hochberg, J. J. Burdon and J. D. Bever. 2007
Thrall, P. H., M. E. Hochberg, J. J. Burdon and J. D. Bever. 2007

... interactions of varying degrees of complexity. Thus, studying host–symbiont dynamics within a community context is a key component of a more general predictive science of coevolution [6–10]. Importantly, complexity does not imply that coevolutionary impacts on communities and vice versa are limited ...
14.2 Community Interactions
14.2 Community Interactions

... Human Our eyelashes are home to tiny mites that feast on oil secretions and dead skin. Without harming us, up to 20 mites may be living in one eyelash ...
Renewable Resource
Renewable Resource

...  Relationship between species in which the different species compete for the same resources Parasitism  Relationship between host and parasite  One organism feeds off of another living organism o Ex. Fleas and rats, mistletoe and trees, etc ...
國立臺南大學 生態科學與技術學系 生態學期中考題 (A 卷)
國立臺南大學 生態科學與技術學系 生態學期中考題 (A 卷)

... 6. A mycorrhizal-associated fungus grows between cells of the root of a plant, forming a mantle around the exterior of the root. This is an example of ____________. (A) Arbuscular mycorrhizae (B) communalistic mycorrhizae (C) Ectomyorrhizae (D) endomycorrhizae (E) supramycorrhizae 7. Which of the fo ...
270-275 - University of Oklahoma
270-275 - University of Oklahoma

... cycles and rely on more than one host species as they go through different developmental stages. The lack of any necessary host species that does not survive in the extreme habitat interrupts the life cycle of the parasite. Thus, the absence of an obligate host species indirectly leads to the local ...
Diversity and disease: community structure
Diversity and disease: community structure

... between plant diversity and foliar fungal pathogen infections. However, because pathogens were relatively host specific, these relationships were driven by competitionmediated reductions in host plant abundance at higher community richness. While changes in host abundance resulting from competition ...
Transect + species presentation
Transect + species presentation

... Helps in keeping other populations at a suitable level Interaction ...
Health and Disease Questions Name…………………………………. 1
Health and Disease Questions Name…………………………………. 1

... mosquitoes. A mosquito takes up the gametes of the malarial parasite when it feeds on the blood of an ................................... person. Fertilisation occurs in the mosquito’s stomach and the immature parasites reproduce. Infective stages of the parasite migrate to the mosquito’s salivary g ...
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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.
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