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12052_2013_5_MOESM1_ESM - Springer Static Content Server
12052_2013_5_MOESM1_ESM - Springer Static Content Server

... (=oviposition) singly. Several days after oviposition, a beetle larva (maggot) burrows into the bean and cannot move from the bean on which an egg was deposited. Since the larvae cannot move to another bean, the quality of the food resources available in the bean on which an egg is deposited will in ...
Relationships in Ecosystems
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... ants, while the ants will take the aphids into their nests at night to protect them from predators and escort them back to a plant the next morning. • The ants collect the aphid's eggs and place them in their nests to survive the cold winter months! ...
Bio07_TR__U02_CH4.QXD
Bio07_TR__U02_CH4.QXD

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Commensalism
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... nations, animals, etc. for territory, a niche, or a location of resources. ...
Parasites, diversity and the ecosystem.
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... role of parasites in perspective but the answers to the questions are far from easy and we should appreciate the amount of hard work that has gone behind the studies of parasites in the Carpenteria salt marshes of Californian. To make some of the questions answerable, we may need to restructure them ...
Slide 1 - life.illinois.edu.
Slide 1 - life.illinois.edu.

... which individuals within a species will reproduce and pass their genes to the next generation. ...
chapter 7
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Unit 9 Ecosystems Ch 8 Lessons 1 and 2
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... • Predation- when one organism kills another for food or nutrients – Adaptations are the behaviors and physical characteristics that allow organisms to live successfully in their environments. – Predation can have a major effect on prey population size • If too many predators are in an area, a decr ...
Ecology, 2e - Sinauer Associates
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... determine the carrying capacity of population, and explain what factors cause increases and decreases in a population. ...
General Biology 101 - Linn
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... intraspecific and interspecific competition of the hosts. ...
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... mutualists ranging from highly beneficial herbivore deterrents to seemingly parasitic sterilizers. In essence, the fitness benefits arising from associating with consecutive sets of all ant species, including seeming parasites, can be explained by the timing of the association of different ant speci ...
Preston et al. 2012 Food web data
Preston et al. 2012 Food web data

... littoral, limnetic, profundal, and benthic zones) as well as terrestrial organisms that interact with the aquatic community or have aquatic life-stages. The food web has three attributes that are often omitted from freshwater food webs: inclusion of (1) parasites and other infectious agents, (2) ont ...
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u tigLe thai e - Mrs. Moore`s Advisory Page
u tigLe thai e - Mrs. Moore`s Advisory Page

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File - Hauber Lab Website
File - Hauber Lab Website

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Unit 7: Ecology Name: Date: Aim #51 Community Interactions: How
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... 8) If the grass that the zebras eat decreases in population, what will happen to the zebra population? Will it increase or decrease? ________________________________________ 9) What will happen to the lion population? Will it increase or decrease? _________________________________ 10) The zebra popu ...
PARASITOS DE Acestrorhynchus lacustris (LÜTKEN, 1875
PARASITOS DE Acestrorhynchus lacustris (LÜTKEN, 1875

... infections were aggregated and determine its type of distribution. The statistical d was also calculated to evaluate its significance (LUDWIG; REYNOLDS, 1988). The frequency of dominance and mean relative dominance (specimens number of a species/total specimen’s number of all infracommunity species ...
Coevolution
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... i. reduce mating in populations, reduce gene flow, and results in enough reproductive isolation to cause speciation events ii. commonly seen in parasites iii. Ex. Crossbills and Black Spruce Pines - cone morphology and bill morphology affects feeding -thicker cone caused larger beaks to develop E. E ...
Parasites - Green Resistance
Parasites - Green Resistance

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Community Interactions: Competition, Predation and Symbiosis Part
Community Interactions: Competition, Predation and Symbiosis Part

... 10) The zebra population decreases and the lion population decreases because of it. After a while, will the zebra population start to increase or decrease because of the decrease in lion population? Explain why: ...
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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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