Key Takeaways: Commensalism
- Commensalism is a type of symbiotic relationship in which one species benefits, while the other species is neither harmed nor helped.
- The species that gains the benefit is called the commensal. The other species is termed the host species.
- An example is a golden jackal (the commensal) following a tiger (the host) to feed on leftovers from its kills.
What are facts about commensalism?
Commensalism in Nature
- Barnacles. While some barnacles are parasitic and others root on nonliving surfaces like rocks, many species are commensal.
- Birds. Birds that live in the hollows of trees are commensal. ...
- Bromeliads. ...
- Cattle Egrets. ...
- Epiphytic Plants. ...
- Gila Woodpeckers and Small Animals. ...
- Gobies. ...
- Golden Jackals. ...
- Hermit Crabs. ...
- Mites. ...
What's example of the types of commensalism?
Examples of Commensalism
- Caribou (Reindeer) and Arctic fox
- Beetles/Large insects and Pseudoscorpions
- Aspergillus and Humans
- Staphylococcus and Humans
- Birds and Army ants
- Nitrosomonas spp and Nitrobacter spp
- Whales and Barnacles
- Orchids that grow on branches
- Livestock and Cattle egrets
- Milkweed and Monarch butterfly
What is a good sentence with the science word commensalism?
Sentence Examples. This can be interpreted as a clear example of commensalism similar to many shrub-understorey experiments. There are numerous other examples of symbiosis, mutualism, commensalism and parasitism between ray-finned fishes and other groups. Multiple geographic origins of commensalism and complex dispersal history of black rats.
What is the difference between commensalism and ammensalism?
what is the difference between commensalism and mutualism?
- Symbiosis: Mutualism, Commensalism, and Parasitism
- Symbiotic Relationships – Mutualism, Commensalism, Parasitism, Predation, Competition II Symbiosis
- Difference between Commensalism and Mutualism
- Difference between mutualism commensalism and parasitism
What is commensalism and examples?
Another example of commensalism is one organism using another as a means of transportation. A lot of insects, fish, and other animals use each other in this way, but a good example is the remora. This is a type of suckerfish that will attach itself to sharks and other big fish to catch an underwater ride.
What are 5 examples of commensalism?
Examples of CommensalismOrchids Growing on Branches. Orchids are a family of flowering plants that grow on trunks and branches of other trees. ... Sharks and Remora Fish. The remora or suckerfish is a small fish that grows to about three feet. ... Milkweed and Monarch Butterfly. ... Burdock Seeds on Animals.
What is commensalism in simple words?
: a relation between two kinds of organisms in which one obtains food or other benefits from the other without damaging or benefiting it.
What is mutualism in science?
Mutualism is a type of symbiotic relationship where all species involved benefit from their interactions. While mutualism is highly complex, it can be roughly broken down into two types of relationship.
What is the best example of commensalism?
One of the best-known examples of a commensal is the remora (family Echineidae) that rides attached to sharks and other fishes. Remoras have evolved on the top of their heads a flat oval sucking disk structure that adheres to the bodies of their hosts.
What are the 3 types of commensalism?
The simplest commensalism definition is that it's a type of symbiosis where one organism benefits and the other neither benefits nor is harmed. The three main types of commensalism are inquilinism, metabiosis, and phoresy.
Why is it called commensalism?
The word "commensalism" is derived from the word "commensal", meaning "eating at the same table" in human social interaction, which in turn comes through French from the Medieval Latin commensalis, meaning "sharing a table", from the prefix com-, meaning "together", and mensa, meaning "table" or "meal".
What is commensalism in parasitism?
Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected. Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed.
What is commensalism mutualism and parasitism?
Parasitism-a symbiotic relationship in which one organism benefits and the other is harmed. Mutualism-a symbiotic relationship in which both organisms benefit. Commensalism-a symbiotic relationship in which one organism benefits and the other is neither helped nor harmed.
What is parasitism example?
A parasitic relationship is one in which one organism, the parasite, lives off of another organism, the host, harming it and possibly causing death. The parasite lives on or in the body of the host. A few examples of parasites are tapeworms, fleas, and barnacles.
What is parasitism in science?
Parasitism is a nonmutual relationship between two organisms in which one benefits at the expense of the other. There are two types of parasites affecting living organisms: ectoparasites (living on the surface of host) and endoparasites (living in the body of host).
What is parasitism in biology?
parasitism, relationship between two species of plants or animals in which one benefits at the expense of the other, sometimes without killing the host organism.
Where does the word "commensalism" come from?
The word commensalism comes from the Latin word commensalis, which means "sharing a table.". Commensalism is most often discussed in the fields of ecology and biology, although the term extends to other sciences.
What are some examples of commensalism?
Examples of Commensalism. Remora fish have a disk on their heads that makes them able to attach to larger animals, such as sharks, mantas, and whales. When the larger animal feeds, the remora detaches itself to eat the extra food.
What is the relationship between two living organisms?
Commensalism is a type of relationship between two living organisms in which one organism benefits from the other without harming it. A commensal species benefits from another species by obtaining locomotion, shelter, food, or support from the host species, which (for the most part) neither benefits nor is harmed. Commensalism ranges from brief interactions between species to life-long symbiosis.
What is the difference between amensalism and commensalism?
Amensalism - A relationship in which one organism is harmed while the other is not affected. Parasitism - A relationship in which one organism benefits and the other is harmed.
What is the term for a relationship in which one species benefits while the other species is neither harmed nor helped?
Commensalism is a type of symbiotic relationship in which one species benefits, while the other species is neither harmed nor helped. The species that gains the benefit is called the commensal. The other species is termed the host species.
What is a commensalistic relationship in which one organism forms a habitat for another?
Metabiosis - Metabiosis is a commensalistic relationship in which one organism forms a habitat for another. An example is a hermit crab, which uses a shell from a dead gastropod for protection. Another example would be maggots living on a dead organism.
What is an example of inquilinism?
Sometimes epiphytic plants growing on trees are considered iniquilism, while others might consider this to be a parasitic relationship because the epiphyte might weaken the tree or take nutrients that would otherwise go to the host.
What is commensalism in biology?
Commensalism is a relationship between two organisms in which one organism benefits, and one is unaffected. This can be contrasted with other types of symbiosis, such as mutualism and parasitism. The supposed difference between commensalism and other types of symbiosis is that in commensalism, the second party or host remains unaffected.
What is the relationship between two species?
Symbiosis – A close and lasting relationship between two different species. Mutualism – A type of symbiosis in which both species benefit. Parasitism – A type of symbiosis in which only one species benefits.
Why are anemones mutualistic?
Because both parties receive added benefits, the relationship is mutualistic. In fact, in each of the 30 known species of anemonefish, the fish can only live in one species of anemone. This suggests that the species pairs have been evolving together for a very long time as evolutionary buddies. 3.
Is symbiosis mutualism or commensalism?
Since the bacteria does not affect you in any way, and it receives much benefit from riding around in your gut, this symbiosis is an example of commensalism. If the bacteria produced a product your body could use, it would be mutualism. If the bacteria used your body to reproduce, but destroyed it in the process, it would be parasitism.
Do marine animals have parasites?
Most large marine animals have some if not many smaller animals following or attached to them. In some cases the animals are parasitic, as in the case of lampreys, which feed on their host. Many cases of commensalism exist as well, where the host is unaffected.
Does commensalism exist?
Other scientists argue that commensalism does exist when the effect on the host is imperceptible. Many cases of supposed commensalism exist in the natural world. The benefits to be gained in a commensal relationship can be transportation, nutrition, protection, or a variety of other benefits. Many hosts of commensal organisms appear ...
What is commensalism in biology?
In other words, commensalism is a type of symbiosis in which spatial proximity allows the commensal to feed on substances captured or ingested by the host. The two partners can survive independently.
How does commensalism work?
One species can harm or help another species without any benefit or detriment in return. Commensalism refers to the benefit of one species, species A, from the presence of another species, species B, whereas B experiences no effect from the presence of A (Table 1 ). Conversely, amensalism refers to the detrimental effect of species B on A whereas B experiences no effect of A in return ( Table 1 ). Far less research has focused on commensalism and amensalism than on other types of interactions, and the strength of commensalism and amensalism is generally thought to be weak. A famous example of commensalism is an association between cattle egrets and cattle. The egrets eat insects flushed by the cattle. The presence of the egrets, however, has no measurable effect on the cattle. Amensalism often occurs as the incidental damage to one species from the presence or activity of another. For example, in the cattle–egret example, some ground-dwelling insects suffer incidental mortality from the cows that step on them.
What are some examples of commensalism?
A famous example of commensalism is an association between cattle egrets and cattle. The egrets eat insects flushed by the cattle.
What is the transition zone between the sterile upper and the densely populated lower digestive tract?
The small intestine serves as a transition zone between the relatively “sterile” upper digestive tract and the densely populated lower digestive tract. The key factor regulating commensalism in the small intestine is peristalsis. The composition of microflora of the proximal small intestine is similar to that of the stomach, although a higher concentration of the various microorganisms can be detected (10 5 CFUs/ml of jejunal aspirate). Anaerobic and coliform bacteria are present in relatively low concentrations.
Why is the bacterial population dependent on the growth of the yeast?
The bacterial population is dependent on the growth of the yeast because the latter produces a niacinlike factor required by the former. Since the numbers of S. cerevisiae are identical in pure or mixed culture, the interaction has been suggested as an example of a true commensalism ( Shindala et al., 1965 ).
Where does commensalism occur?
Commensalism occurs in both the plant and animal kingdoms , and is also prevalent among bacterial species. We recognize three distinct types of commensal relationships, although more complex variants of these basic types can be established:
What is the association between organisms?
Any association between organisms (parasitism, commensalism, mutualism, phoresis). An association of organisms in which both partners benefit from the association and cannot live without each other.
What is commensalism in biology?
In commensalism, one organism benefits while the other is unaffected. For example, one organism can provide an essential growth factor, such as a vitamin, for another organism. This type of cross-feeding is common in soil organisms. The opposite of commensalism is amensalism, where one organism is harmed while the other is unaffected. A good example of this interaction is when one organism produces an antibiotic against another organism. Such an interaction is often the basis of biological control. For example, some isolates of the bacterium Pseudomonas fluorescens can suppress the fungal pathogen Gaeumannomyces graminis, responsible for ‘take-all’ in wheat ( Triticum aestivum ).
What is the meaning of commensalism?
Commensalism refers to the benefit of one species, species A, from the presence of another species, species B, while B experiences no effect from the presence of A (Table I). From: Encyclopedia of Biodiversity, 2001. Download as PDF. About this page.
Why are sea urchins dying?
He suggested this could have been due to either disease or poor nutrition leading to disease. Connolly (1986) noted that the parasitic turbellarian Syndisyrinx punicea occurs in the gut of most H. erythrogramma. Laegdsgaard et al. (1991) recorded the presence of trematodes in the gonads of 1 to 3% of H. erythrogramma in their study sites near Sydney.
How does commensalism benefit a symbiont?
Commensalism benefits the symbiont without significantly affecting the host. This is a relatively rare type of interaction because few hosts can be considered to be completely unaffected by their symbionts. Epiphytes, plants that benefit by using their hosts for aerial support but gain their resources from the atmosphere, and cattle egrets, which eat insects flushed by grazing cattle, are well-known examples of commensalism. However, epiphytes may capture and provide nutrients to the host (a benefit) and increase the likelihood that overweight branches will break during high winds (a detriment). Some interactions involving insects may be largely commensal.
What is mutualistic symbiosis?
Mutualistic symbioses, commensalism, parasitism, and amensalism (e.g. whereby parasites might change the animal behaviour and either contribute or impede the delivery of specific services) are of general importance to regulating services. A large number of studies have been dedicated to understanding how a single pathogen agent interacts with its host, without taking into account the role of the overall biotic environment. This reductionist approach of pathogenesis has, however, evolved considerably in the past decade, triggered by the development of network ecology (Hudson et al., 2006; Lafferty et al., 2008; Vacher et al., 2008) followed by that of meta-omics ( Berendsen et al., 2012; Hacquard and Schadt, 2015; Vayssier-Taussat et al., 2014 ). The transition to a more holistic understanding of diseases has led to the recent emergence of the ‘pathobiome’ concept, which represents the agent integrated within its wider biotic environment ( Vayssier-Taussat et al., 2014 ). Our understanding of the relationship between network properties and disease regulation is still in its infancy ( Vacher et al., 2016 ). The idea revolves around the fact that symbiotic interactions might be key for functioning (e.g. the black queen hypothesis in microbial communities) and, hence, for services ( Carroll, 1988; Jackson et al., 2012; Kiers et al., 2007; Polin et al., 2014; Rapparini and Peñuelas, 2014 ). Regulating services delivered through different co-production processes mostly benefit human well-being locally, although many regulating ESs are influenced by local-to-regional management and global changes (climate warming, pollution, landscape, fragmentation) spanning multiple scales ( Gill et al., 2016; Hein et al., 2006; Stephens et al., 2015 ). Overall, service diversity coupled to biodiversity seems to be a good and reliable predictor for the delivery of regulating ESs ( Raudsepp-Hearne et al., 2010a ). We grouped questions under emerging themes, as before:
How does indirect mutualism affect commensalism?
Indirect mutualism and commensalism involve a consumer–resource interaction coupled with either exploitative (Figure 1d) or interference ( Figure 1e) competition. For instance, starfish and snails reduce the abundance of mussels, a dominant space occupier, and increase the abundance of inferior sessile species. The presence of grazers on oyster farms in Australia increases oyster recruitment by removing algae, who otherwise preempt the available spaces. In Figure 1d, an increase in species 1 should lead to a decrease in species 2 and an increase in species 3. The latter positive effect would propagate up the right branch of the diagram, increasing the abundances of species 4 and 5. This situation arises when, for example, planktivorous fish preferentially feeding on large zooplankton indirectly increase the abundance of small zooplankton. Cases involving interference competition are well known from, for example, the intertidal environment, where birds increase the abundance of acorn barnacles by consuming limpets that otherwise dislodge the young barnacles off the rock.
What is the name of the symbionts that live in ant colonies?
A number of insect and other arthropod species function as nest commensals in ant or termite colonies. Such species are called myrmecophiles or termitophiles, respectively. These symbionts gain shelter, and often detrital food, from their host colonies with little, if any, effect on their hosts.
What Is Commensalism?
Within the biosphere, organisms develop evolutionary and nutrient related relationships with one another. Besides the obvious relationship between some organisms such as a panther and a deer as predator and prey, some organisms develop different sorts of symbiotic relationships.
Commensalism Examples
Below are examples of each of the four types of commensal symbiotic relationships between different species of organisms:
Prompts About Commensalism
In at least one paragraph, define symbiotic relationship and commensalism in your own words.
What is Commensalism?
Commensalism refers to the relationship between two living organisms in which one of them depends on the other without either endangering it or benefiting it. The parasite obtains shelter, locomotion, support, or food from its host. Often, the host is neither endangered nor benefits from the interaction, whereas the commensal species manifests a lot of morphological adaptation. Dependence ranges from short-term interaction to long life reliance. In practice, it is not easy to show that the passive species remains unaffected. For instance, certain birds live in holes in trees. Does their living in there affect the trees? All we can say for real is that the trees continue living and producing, and therefore we assume that the birds do not harm the host plant.
When was commensalism first used?
The term Commensalism was created in 1876 by a Belgian zoologist and paleontologist Pierre-Joseph van Beneden, together with the term ‘mutualism.’ Originally, Beneden used the term to explain the activity of carcass-eating animals, which followed predators to consume their uneaten food without causing any harming to them. The word commensalism originates from the Latin word commensalis, meaning ‘sharing a table.’ Commensalism is most regularly in the field of ecology and biology.
What are some examples of amensalism?
There are two forms of amensalism: competition and antibiosis. Competition occurs when a more powerful or larger species eliminates another species from its source of food or shelter. Antibiosis occurs when one species discharges a chemical which kills the other organism, while the one that discharged the chemical remains unharmed. An example of antibiosis amensalism is given by the bread mold Penicillium. Several types of fungi and bacteria can grow on bread given the desired conditions. When bread passes its shelf life mold, Penicillium can grow on it. This mold can secrete penicillin, which ruins any form of bacteria that would want to grow on the bread. Penicillin remains unaffected by bacteria.
What is the relationship between two species called?
Symbiosis describes any relationship between members of two different species, including parasitism, mutualism, commensalism, endosymbiosis, and ectosymbiosis, in which an organism lives inside another and on the surface of the organism respectively. Therefore, both beneficial and harmful or unfavorable interactions are included, and the participants are referred to as symbionts. Any relationship between two species of a population that live together in the same environment is symbiotic, irrespective of whether an organism gets harmed, benefits, or does not affect the other species.
What is the term for a living thing that is surgically connected to another living thing?
Parabiosis is a term frequently used in the field of physiology and biology. This term means “living beside.” In experiment, two living creatures are surgically connected together and develop single, shared physiological system, for instance, a shared circulatory system. By surgically joining two animals, researchers can confirm that the feedback structure in one animal is transmitted and affects the second animal through plasma and exchange of blood.
How did dogs and humans become domesticated?
Domesticated animals, such as cats and dogs, seem to have begun their relationship with humans through commensal relationship. DNA evidence indicates that dogs associated themselves with humans before people shifted from hunting and gathering to agriculture. The ancestors of dogs followed people in their hunting expeditions to eat carcass leftovers. As time elapsed, the relationship transformed to a mutual one, whereby humans also benefited from the association by acquiring defense against their predators and help in tracking and killing prey. As the relationship reformed, so did the features of dogs.
Why do nurse plants grow?
Because of their large size, nurse plants protect seedlings against herbivores and harsh weather conditions to enable them to grow.
What is a commensalism?
Definition of commensalism. : a relation between two kinds of organisms in which one obtains food or other benefits from the other without damaging or benefiting it.
What is commensalism in medical terms?
: a relation between two kinds of organisms in which one obtains food or other benefits from the other without damaging or benefiting it.

Commensalism Definition
Terms Related to Commensalism
- Commensalism is often confused with related words: Mutualism - Mutualismis a relationship in which two organisms benefit from each other. Amensalism- A relationship in which one organism is harmed while the other is not affected. Parasitism- A relationship in which one organism benefits and the other is harmed. There's often debate about whether a particular relationship is …
Examples of Commensalism
- Remora fish have a disk on their heads that makes them able to attach to larger animals, such as sharks, mantas, and whales. When the larger animal feeds, the remora detaches itself to eat the extr...
- Nurse plants are larger plants that offer protection to seedlings from the weather and herbivores, giving them an opportunity to grow.
- Remora fish have a disk on their heads that makes them able to attach to larger animals, such as sharks, mantas, and whales. When the larger animal feeds, the remora detaches itself to eat the extr...
- Nurse plants are larger plants that offer protection to seedlings from the weather and herbivores, giving them an opportunity to grow.
- Tree frogsuse plants as protection.
- Golden jackals, once they have been expelled from a pack, will trail a tiger to feed on the remains of its kills.
Types of Commensalism
- Inquilinism- In inquilinism, one organism uses another for permanent housing. An example is a bird that lives in a tree hole. Sometimes epiphytic plants growing on trees are considered iniquilism, while others might consider this to be a parasitic relationship because the epiphyte might weaken the tree or take nutrients that would otherwise go to the host. Metabiosis- Metabi…
Domesticated Animals and Commensalism
- Domestic dogs, cats, and other animals appear to have started out with commensal relationships with humans. In the case of the dog, DNA evidence indicates dogs associated themselves with people before humans switched from hunting-gathering to agriculture.1 It's believed the ancestors of dogs followed hunters to eat remains of carcasses. Over time, the relationship bec…
Commensalism Definition
Examples of Commensalism
- Pseudoscorpions
An interesting example of commensalism is that of the pseudoscorpion. Pseudoscorpions are very tiny scorpions (less than a centimeter) that hitch rides on much larger insects. Seen in the photo above, a pseudoscorpion is attached to the leg of a much larger fly. The pseudoscorpion … - Bait Fish and Manta Rays
Small bait fish and manta rays often show a form of commensalism in which the baitfish are protected simply by their proximity to the larger fish. Large manta rays will often be seen with huge schools of small fish underneath their enormous fins. It is believed that the small fish are p…
Related Biology Terms
- Symbiosis– A close and lasting relationship between two different species.
- Mutualism– A type of symbiosis in which both species benefit.
- Parasitism– A type of symbiosis in which only one species benefits.
Quiz
- 1. A new species of bacteria is found that lives inside of your gut. The bacteria lives off of waste that you would excrete anyway, and the heat you produce. It does not seem to give you any benefit in return. How would you classify this symbiotic relationship? A. Mutualism B. Parasitism C.Commensalism 2. Anemonefish, or “clownfish”, are certain species of fish that live inside of a…