For the now-abandoned mammal taxon, see Insectivora.
"Spider eater" redirects here. For the fictional monster, see Spider eater (Dungeons & Dragons).
This aardwolf skull exhibits greatly reduced molars and carnassials teeth as they are unnecessary for any large, insectivorous animal subsisting on soft insects such as termites. The dentition of a shrew is very different. The aardwolf uses its canine teeth in self-defence and, occasionally, in digging; accordingly, the canines have not been greatly reduced.
A robber fly eating a hoverfly
The giant anteater, a large insectivorous mammal
An insectivore is a carnivorous plant or animal that eats insects.[1] An alternative term is entomophage,[2] which also refers to the human practice of eating insects.
The first insectivorous vertebrates were amphibians. When they evolved 400 million years ago, the first amphibians were piscivores, with numerous sharp conical teeth, much like a modern crocodile. The same tooth arrangement is however also suited for eating animals with exoskeletons, thus the ability to eat insects is an extension of piscivory.[3]
At one time, insectivorous mammals were scientifically classified in an order called Insectivora. This order is now abandoned, as not all insectivorous mammals are closely related. Most of the Insectivora taxa have been reclassified; those that have not yet been reclassified remain in the order Eulipotyphla.
Although individually small, insects exist in enormous numbers - they number over a million described species[4]:1958 and some of those species occur in enormous numbers. Accordingly, insects make up a very large part of the animal biomass in almost all non-marine, non-polar environments. It has been estimated that the global insect biomass is in the region of 1012 kg with an estimated population of 1018 organisms.[5]:13 Many creatures depend on insects as their primary diet, and many that do not (and are thus not technically insectivores) nevertheless use insects as a protein supplement, particularly when they are breeding.[6]
Contents
1Examples
2Insectivorous plants
3See also
4References
Examples
Examples of insectivores include different kinds of species of carp, frogs, lizards (e.g. chameleons, geckos), nightingales, swallows, echidnas,[7] numbats, anteaters, armadillos, aardvarks, pangolins, aardwolfs,[8] bats, and spiders. Even large mammals are recorded as eating insects;[6] the sloth bear is perhaps the largest insectivore. Insects also can be insectivores; examples are dragonflies, hornets, ladybugs, and praying mantises.[9]:31 Insectivory also features to various degrees amongst primates, such as marmosets, tamarins, tarsiers, galagos and aye-aye.[10][11]:56–57 There is some suggestion that the earliest primates were nocturnal, arboreal insectivores.[12]
Insectivorous plants
Main article: Insectivorous plants
Drosera capensis, the Cape sundew, bends on trapping an insect.
Insectivorous plants are plants that derive some of their nutrients from trapping and consuming animals or protozoan. The benefit they derive from their catch varies considerably; in some species it might include a small part of their nutrient intake and in others it might be an indispensable source of nutrients. As a rule, however, such animal food, however valuable it might be as a source of certain critically important minerals, is not the plants' major source of energy, which they generally derive mainly from photosynthesis.[13]:14
Insectivorous plants might consume insects and other animal material trapped adventitiously, though most species to which such food represents an important part of their intake are specifically, often spectacularly, adapted to attract and secure adequate supplies. Their prey animals typically, but not exclusively, comprise insects and other arthropods. Plants highly adapted to reliance on animal food use a variety of mechanisms to secure their prey, such as pitfalls, sticky surfaces, hair-trigger snaps, bladder-traps, entangling furriness, and lobster-pot trap mechanisms.[13]:14–17 Also known as carnivorous plants, they appear adapted to grow in places where the soil is thin or poor in nutrients, especially nitrogen, such as acidic bogs and rock outcroppings.[13]:13
Insectivorous plants include the Venus flytrap, several types of pitcher plants, butterworts, sundews, bladderworts, the waterwheel plant, brocchinia and many members of the Bromeliaceae. The list is far from complete, and some plants, such as Roridula species, exploit the prey organisms mainly in a mutualistic relationship with other creatures, such as resident organisms that contribute to the digestion of prey. In particular animal prey organisms supply carnivorous plants with nitrogen, but they also are important sources of various other soluble minerals, such as potassium and trace elements that are in short supply in environments where the plants flourish. This gives them a decisive advantage over other plants, whereas in nutrient-rich soils they tend to be out-competed by plants adapted to aggressive growth where nutrient supplies are not the major constraints.
Technically these plants are not strictly insectivorous, as they consume any animal that they can secure and consume; the distinction is trivial, however, because not many primarily insectivorous organisms exclusively consume insects. Most of those that do have such a restrictive diet, such as certain parasitoids and hunting wasps, are specialised to exploit particular species, not insects in general. Indeed, much as large mantids and spiders will do, the larger varieties of pitcher plant have been known to consume vertebrates such as small rodents and lizards.[13]:13 Charles Darwin wrote the first well-known treatise on carnivorous plants in 1875.[14]
See also
The dictionary definition of insectivore at Wiktionary
Entomophagy
Insectivora
List of feeding behaviours
Consumer-resource systems
References
^Miller, George A. (2009). ""WordNet - About Us." : entry on insectivorous". Princeton University. Retrieved 1 April 2010.
^Gullan, P. J.; Cranston, P. S. (2005). The Insects: An Outline of Entomology. Malden: Blackwell Publishing. p. 455. ISBN 978-1-4051-1113-3.
^Capinera, John L. (Editor). (2008). Encyclopedia of Entomology, (2nd ed). Springer Reference. ISBN 1-4020-6242-7, ISBN 978-1-4020-6242-1. Ltd preview in Google Books. Accessed on 1 Apr 2010.
^Dudley, Robert (2002). "Flight and the Pterygote Insecta". The biomechanics of insect flight: form, function, evolution. Princeton University Press. pp. 3–35. ISBN 978-0-691-09491-5.
^ abWhitney, Stephen R.; Sandelin, R. (2004). Field Guide to the Cascades & Olympics. The Mountaineers Books. p. 317. ISBN 978-0-89886-808-1. Retrieved 2010-04-01.
^""Long-beaked Echidna (Zaglossus bruijni)" (entry)". animalinfo.org. West of Scotland & Ayr Group. Retrieved 1 April 2010.
^Holekamp, Kay E. "Aardwolf (Proteles cristata)". www.animalinfo.org. Archived from the original on 17 April 2010. Retrieved 1 April 2010.
^Hill, Dennis S. (1997). The economic importance of insects. Springer. p. 198. ISBN 978-0-412-49800-8. Retrieved 2010-04-01.
^Stetoff, Rebecca (2006). The Primate Order. Marshall Cavendish. p. 92. ISBN 978-0-7614-1816-0.
^Jones, S., Martin, R., & Pilbeam, D., eds. (1994). The Cambridge Encyclopedia of Human Evolution. Cambridge: Cambridge University Press. ISBN 0-521-32370-3.CS1 maint: Uses editors parameter (link)
^Weiss, M. L., & Mann, A. E. (1985). Human Biology and Behaviour: An Anthropological Perspective. Boston: Little Brown & Co. ISBN 0-673-39013-6.CS1 maint: Multiple names: authors list (link)
^ abcdSlack, Adrian; Gate, Jane (2000). Carnivorous Plants. MIT Press. p. 240. ISBN 978-0-262-69089-8.
^Darwin, C. (1875). Insectivorous plants. London: John Murray. Archived from the original on 2006-09-23.
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Feeding behaviours
Carnivores
adult
Hematophagy
Insectivore
Lepidophagy
Man-eater
Molluscivore
Mucophagy
Myrmecophagy
Ophiophagy
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Avivore
Spongivore
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Oophagy
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Herbivores
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Microbivory
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Fungivore
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Predation
Ambush predator
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Intraguild predator
Pursuit predator
Aquatic predation
Lunge feeder
Pivot feeder
Ram feeder
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Bait balls
Bottom feeder
Feeding frenzy
Filter feeder
Browsing
Grazing
Hypercarnivore
Hypocarnivore
Kleptoparasitism
Mesocarnivore
Scavenger
Trophallaxis
Predation
Antipredator adaptation
Carnivorous plant
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Category:Eating behaviors
English Journal
Discovery of hantaviruses in bats and insectivores and the evolution of the genus Hantavirus.
Hantaviruses are among the most important zoonotic pathogens of humans, causing either hemorrhagic fever with renal syndrome (HFRS) or hantavirus pulmonary syndrome (HPS). From the period 1964-2006 almost all hantaviruses had been identified in rodents, with the exception of Thottapalayam virus (TPM
Hemorrhagic fever with renal syndrome is endemic in the Balkans with epidemic outbreaks and sporadic cases that have been recorded yearly since the disease was first recognized. The incidence of Balkan HFRS is modest, with approximately one hundred cases reported in most years. Seroepidemiological i
Proceedings. Biological sciences / The Royal Society.Proc Biol Sci.2014 Jul 7;281(1786). pii: 20140649. doi: 10.1098/rspb.2014.0649.
Migratory bird species that feed on air-borne insects are experiencing widespread regional declines, but these remain poorly understood. Agricultural intensification in the breeding range is often regarded as one of the main drivers of these declines. Here, we tested the hypothesis that body mass in
A unifying framework for quantifying the nature of animal interactions.
Potts JR1, Mokross K2, Lewis MA3.
Journal of the Royal Society, Interface / the Royal Society.J R Soc Interface.2014 Jul 6;11(96). pii: 20140333. doi: 10.1098/rsif.2014.0333.
Collective phenomena, whereby agent-agent interactions determine spatial patterns, are ubiquitous in the animal kingdom. On the other hand, movement and space use are also greatly influenced by the interactions between animals and their environment. Despite both types of interaction fundamentally in
