potatoes and many other crop species can be found mainly in agricultural fields, but also in grasslands and suburban areas such as greenhouses, gardens, and parks. (Le Guigo, et al., 2012; Petrovic-Obradovic, 2010; van Emden and Harrington, 2007)colonizes over 200 species of host plants throughout temperate and tropical regions. Its host plants, such as
- Terrestrial Biomes
- savanna or grassland
- Range length
- 1.7 to 3.6 mm
- 0.07 to 0.14 in
- Development - Life Cycle
Holocyclic populations of Rosa spp.) hatch in May. In the spring, produces several wingless, parthenogenetic generations while colonizing its primary host. Later, winged females are produced; the winged offspring colonize secondary host plants in June and July. colonizes over 200 secondary host plant species, though it typically prefers plants of the family Solanaceae. Parthenogenesis continues on the secondary host until the fall, at which time males and sexually reproductive females are produced. Males and sexually reproductive females return to the primary host plant species, mate, and lay eggs that overwinter. Anholocyclic populations (in which individuals reproduce only by parthenogenesis) account for the populations that are distributed throughout the rest of the world. The life cycle in anholocyclic populations is similar, except for the absence of the sexually reproductive stage. Apterous (wingless) females of likely overwinter on primary host plants in warmer regions and later produce alate (winged) females that in turn colonize secondary hosts later in the season. One female can give birth to anywhere from a few to 50 offspring in a single day. nymphs develop to reproductive maturity after about 6 to 12 days. (De Conti, et al., 2011; Lamb, et al., 2009; Raboudi, et al., 2011)(in which individuals undergo both parthenogenesis and sexual reproduction) are present in North America. In these holocyclic populations, eggs that have overwintered on primary hosts (usually
- Key Reproductive Features
- gonochoric/gonochoristic/dioecious (sexes separate)
- Breeding season
- Sexually reproducing populations breed between the end of summer and early fall.
- Range age at sexual or reproductive maturity (female)
- 6 to 12 days
- Parental Investment
- Typical lifespan
- 10 to 35 days
- Typical lifespan
- Typical lifespan
- 10 to 35 days
- Typical lifespan
Communication and Perception
The main sensory organ in aphids is their antennae. The antennae are used for tactile and chemical detection. To determine whether a plant is a suitable host, (Goldansaz and McNeil, 2006; Kaplan and Thaler, 2012; Legarrea, et al., 2012; Pompon, et al., 2010a)uses its antennae to feel along the leaves and detect host-specific odors and other chemical cues. also uses its stylet mouthparts to probe into plants beneath the epidermis. Color cues can play a role in host plant selection, and can detect UV light. In other insects, UV light likely plays a role in flight patterns; however, the detection of UV light by likely serves a different purpose, as aphids are weak fliers and instead rely on air currents. Changes in UV light have been shown to alter orientation and colonization in . Aphids that are captured or harassed produce an alarm pheromone that alerts other aphids of danger. The alarm pheromone typically elicits evasive behaviors in aphids, such as dropping off the host plant or walking away. In , alarm pheromones also cause an increase in the parthenogenetic production of winged individuals, while sexually reproductive females produce a pheromone that attracts male mates.
- Other Communication Modes
Solanaceae family, particularly potatoes and tomatoes and plants in the Brassicaceae family, including cabbage and lettuce. individuals (usually dehydrated alate females) also have been observed consuming xylem sap for rehydration. (Atamian, et al., 2013; Le Guigo, et al., 2012; Legarrea, et al., 2012; Pompon, et al., 2010b)feeds on plant phloem. It uses its stylet mouthparts to pierce the plant tissue and access the phloem. This aphid species is highly polyphagous and has been documented as feeding on over 200 species in 20 different plant families, many of them crop species. Its most notable host plants include plants in the
- Primary Diet
- eats sap or other plant foods
- Plant Foods
- sap or other plant fluids
Lady beetles are avid predators of aphids. Many lady beetle species have been documented preying on , including Harmonia axyridis, Coccinella septempunctata, Hippodamia convergens, Coleomegilla maculata lengi, Coccinella trifasciata perplexa, and Propylea quatuordecimpunctata. Other predators include the carabid beetle, Pterostichus melanarius, which occurs in potato ecosystems, as well as other generalist aphid predators, such as spiders, syrphid flies, green lacewings, and midge larvae. To defend against predators, releases an alarm pheromone, as do most aphid species. The alarm pheromone alerts others in the colony of a predation threat and typically elicits evasive behavior such as dropping off the host plant or walking away. Additionally, the European red ant, Myrmica rubra, tends some colonies of . The ants protect the aphids from predators and parasitoids in exchange for honeydew produced by the aphids. (Alvarez, et al., 2013; Alyokhin, et al., 2011; Finlayson, et al., 2009; Kaplan and Thaler, 2012; van Emden and Harrington, 2007)
- Known Predators
- lady beetles (Coccinellidae)
- multicolored Asian lady beetles (Harmonia axyridis)
- seven spotted ladybugs (Coccinella septempunctata)
- convergent lady beetles (Hippodamia convergens)
- spotted lady beetles (Coleomegilla maculata lengi)
- three-banded lady beetles (Coccinella trifasciata perplexa)
- 14-spotted ladybird beetles (Propylea quatuordecimpunctata)
- carabid beetles (Pterostichus melanarius)
- spiders (Araneae)
- syrphid flies (Syrphidae)
- green lacewings (Chrysopidae)
- midges (Cecidomyiidae)
Rosa spp. Its preferred secondary host is potato, though feeds on other plant species in the family Solanaceae. Other significant host plants include tomatoes, lettuce, and plants in the Brassicaceae family, such as cabbage. All aphids, including , contain a bacterial endosymbiont, Buchnera aphidicola. These bacteria live within the bodies of aphids and synthesize amino acids that the aphids cannot get from their nutrient-poor phloem diet. The European red ant, Myrmica rubra, has been documented tending colonies of in a mutualistic relationship. The ants eat the honeydew produced by the aphids; in return, the ants protect, clean, and transport the aphids. is prey to many species of lady beetle and many other insect species, such as syrphid flies and green lacewings. Many species of wasp parasitoids lay eggs inside aphids, which causes aphid death when the wasp offspring hatch. These wasp species can be used to control aphid populations. Aphidius ervi and Praon volucre are two of the major wasp species that use as a host. Pathogenic fungi in the genus Entomophthora can cause disease and death in . (Alyokhin, et al., 2011; Atamian, et al., 2013; Boquel, et al., 2011; Finlayson, et al., 2009; Francis, et al., 2010; Le Guigo, et al., 2012; Legarrea, et al., 2012; Lins, et al., 2013; Petrovic-Obradovic, 2010; Thi, et al., 2013)is a significant crop pest with an almost worldwide distribution. It colonizes over 200 host plant species. Its primary host often is cited to be
- roses (Rosa)
- nightshades (Solanaceae)
- potatoes (Solanum tuberosum)
- tomatoes (Solanum lycopersicum)
- lettuce (Lactuca)
- cabbage (Brassica oleracea)
- bacteria (Buchnera aphidicola)
- European red ants (Myrmica rubra)
Economic Importance for Humans: Positive
There are no known positive effects ofon humans.
Economic Importance for Humans: Negative
potatoes, tomatoes, lettuce, and cabbage. The aphid also is a vector of many plant diseases, including 40 non-persistent viruses and several persistent viruses (e.g., yellow net virus, pea leaf roll virus, and potato leaf roll virus). To prevent as much crop damage as possible, substantial research has been and continues to be conducted to find the most effective insecticides, biological control methods, and resistant plants. (Legarrea, et al., 2012; Raboudi, et al., 2011; van Emden and Harrington, 2007), the potato aphid, is described as one of the most harmful aphid species in the world. It feeds on many plant species and causes significant crop damage in
- Negative Impacts
- crop pest
has no special conservation status.
Angela Miner (author), Animal Diversity Web Staff, Elizabeth Wason (author, editor), Animal Diversity Web Staff, Leila Siciliano Martina (editor), Animal Diversity Web Staff.
Living in Australia, New Zealand, Tasmania, New Guinea and associated islands.
living in sub-Saharan Africa (south of 30 degrees north) and Madagascar.
living in the Nearctic biogeographic province, the northern part of the New World. This includes Greenland, the Canadian Arctic islands, and all of the North American as far south as the highlands of central Mexico.
living in the southern part of the New World. In other words, Central and South America.
living in the northern part of the Old World. In otherwords, Europe and Asia and northern Africa.
living in landscapes dominated by human agriculture.
reproduction that is not sexual; that is, reproduction that does not include recombining the genotypes of two parents
- bilateral symmetry
having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.
uses smells or other chemicals to communicate
used loosely to describe any group of organisms living together or in close proximity to each other - for example nesting shorebirds that live in large colonies. More specifically refers to a group of organisms in which members act as specialized subunits (a continuous, modular society) - as in clonal organisms.
- active during the day, 2. lasting for one day.
animals which must use heat acquired from the environment and behavioral adaptations to regulate body temperature
union of egg and spermatozoan
An animal that eats mainly plants or parts of plants.
having a body temperature that fluctuates with that of the immediate environment; having no mechanism or a poorly developed mechanism for regulating internal body temperature.
- internal fertilization
fertilization takes place within the female's body
referring to animal species that have been transported to and established populations in regions outside of their natural range, usually through human action.
A large change in the shape or structure of an animal that happens as the animal grows. In insects, "incomplete metamorphosis" is when young animals are similar to adults and change gradually into the adult form, and "complete metamorphosis" is when there is a profound change between larval and adult forms. Butterflies have complete metamorphosis, grasshoppers have incomplete metamorphosis.
having the capacity to move from one place to another.
- native range
the area in which the animal is naturally found, the region in which it is endemic.
reproduction in which eggs are released by the female; development of offspring occurs outside the mother's body.
development takes place in an unfertilized egg
chemicals released into air or water that are detected by and responded to by other animals of the same species
"many forms." A species is polymorphic if its individuals can be divided into two or more easily recognized groups, based on structure, color, or other similar characteristics. The term only applies when the distinct groups can be found in the same area; graded or clinal variation throughout the range of a species (e.g. a north-to-south decrease in size) is not polymorphism. Polymorphic characteristics may be inherited because the differences have a genetic basis, or they may be the result of environmental influences. We do not consider sexual differences (i.e. sexual dimorphism), seasonal changes (e.g. change in fur color), or age-related changes to be polymorphic. Polymorphism in a local population can be an adaptation to prevent density-dependent predation, where predators preferentially prey on the most common morph.
reproduction that includes combining the genetic contribution of two individuals, a male and a female
living in residential areas on the outskirts of large cities or towns.
uses touch to communicate
that region of the Earth between 23.5 degrees North and 60 degrees North (between the Tropic of Cancer and the Arctic Circle) and between 23.5 degrees South and 60 degrees South (between the Tropic of Capricorn and the Antarctic Circle).
Living on the ground.
the region of the earth that surrounds the equator, from 23.5 degrees north to 23.5 degrees south.
- tropical savanna and grassland
A terrestrial biome. Savannas are grasslands with scattered individual trees that do not form a closed canopy. Extensive savannas are found in parts of subtropical and tropical Africa and South America, and in Australia.
A grassland with scattered trees or scattered clumps of trees, a type of community intermediate between grassland and forest. See also Tropical savanna and grassland biome.
- temperate grassland
A terrestrial biome found in temperate latitudes (>23.5° N or S latitude). Vegetation is made up mostly of grasses, the height and species diversity of which depend largely on the amount of moisture available. Fire and grazing are important in the long-term maintenance of grasslands.
uses sight to communicate
reproduction in which fertilization and development take place within the female body and the developing embryo derives nourishment from the female.
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