Hawthorn flies and apple flies are considered to be two races of the species complex Rhagoletis pomonella. The flies are textbook examples for the process of sympatric speciation, a process by which new species evolve in the same geographic region from a common ancestor species.
Are hawthorn and apple maggot flies the same species?
According to the phylogenetic species concept, are hawthorn and apple maggot flies separate species? YES – They are GENETICALLY DISTINGUISHABLE and have a DISTINCT GENETIC PROFILE, so they’re SEPARATE SPECIES according to this concept.
Can hawthorn flies mate with apple flies?
Hawthorn & Apple Maggot Flies
There is only a 4-6% hybridization rate between hawthorn and apple maggot flies.
Why are hawthorn flies becoming different species?
Their breeding season matches the season when the apple or hawthorn fruits mature. Because they rarely interbreed, the two populations of flies are evolving other genetic differences. They appear to be in the process of becoming separate species.
How is Apple maggot an example of sympatric speciation?
The sympatric hypothesis posits that ecological specialization after a host shift can result in speciation in the absence of complete geographic isolation. The apple maggot, Rhagoletis pomonella, is a model for sympatric speciation in progress. Hawthorn (Crataegus spp.) is the native host for R. pomonella in N.
What causes apple maggot?
Apple maggot flies lay eggs in fruit and the fruit becomes pitted and misshapen. Each “sting” or hole created by the female fly as she lays an egg, forms a tiny spot or dimple. Pulp breaks down, discolors and starts to rot as a result of maggots (larvae) tunneling through the flesh.
Why would apple maggot flies be considered two separate races?
They would have as many similar alleles as any two random individuals.
Is the population of hawthorn flies living on the apples becoming a new species?
Is the population of hawthorn flies living on the apples becoming a new species? If flies from the apple and hawthorn populations are freely interbreeding with one another, then they would be considered the same species.
What makes two organisms the same species?
Key points. According to the biological species concept, organisms belong to the same species if they can interbreed to produce viable, fertile offspring. Species are separated from one another by prezygotic and postzygotic barriers, which prevent mating or the production of viable, fertile offspring.
What is Parapatric speciation example?
3.2 Parapatric Speciation
The best-known example of incipient parapatric speciation occurs in populations of the grass Agrostis tenuis which span mine tailings and normal soils. Individuals that are tolerant to heavy metals, a heritable trait, survive well on contaminated soil, but poorly on non-contaminated soil.
Are flies from apple and hawthorn trees becoming two different species?
Hawthorn flies and apple flies are considered to be two races of the species complex Rhagoletis pomonella. The flies are textbook examples for the process of sympatric speciation, a process by which new species evolve in the same geographic region from a common ancestor species.
What is the most likely consequence of the introduction of apple trees to apple maggots?
What is the most likely consequence of the introduction of apple trees to apple maggots? A. Populations of apple maggots that mate on different trees could become reproductively isolated and eventually speciate.
What are the types of speciation?
There are four major variants of speciation: allopatric, peripatric, parapatric, and sympatric. Speciation is how a new kind of plant or animal species is created.
What do apple maggots look like?
Identification Slightly smaller than a housefly, adult apple maggots are 1/5 inch long and have conspicuous black bands — resembling a W — running across their transparent wings. The larvae (1/4 inch long) are white, tapered maggots that tunnel throughout the flesh of fruit.
What was the species concept most used by Linnaeus?
Linnaeus pioneered the use of binomial nomenclature, Latin scientific names which serve as a shorthand for descriptions of species. As an example, the scientific name of the yellow-shafted flicker (a woodpecker) is Colaptes auratus, where Colaptes is the generic and auratus the specific epithet.
What is Peripatric speciation in biology?
Peripatric speciation is a mode of speciation in which a new species is formed from an isolated peripheral population. Since peripatric speciation resembles allopatric speciation, in that populations are isolated and prevented from exchanging genes, it can often be difficult to distinguish between them.
References:
- https://quizlet.com/109813329/hw-speciation-ppt-flash-cards/
- https://www.lcps.org/cms/lib4/VA01000195/Centricity/Domain/2898/maggot_fly_clicker.pdf
- https://k12.libretexts.org/Bookshelves/Science_and_Technology/Biology/05%3A_Evolution/5.14%3A_Origin_of_Species
- https://pubmed.ncbi.nlm.nih.gov/11048719/
- https://extension.umn.edu/yard-and-garden-insects/apple-maggot
- https://quizlet.com/550100395/quiz-13-flash-cards/
- https://teach.genetics.utah.edu/content/evolution/speciation/expert-groups-key.pdf
- https://www.khanacademy.org/science/ap-biology/natural-selection/speciation/a/species-speciation
- https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/parapatric-speciation
- https://www.sciencedaily.com/releases/2017/01/170125091655.htm
- https://quizlet.com/525690556/no-flash-cards/
- https://www.nationalgeographic.org/encyclopedia/speciation/
- https://www.planetnatural.com/pest-problem-solver/tree-pests/apple-maggot-control/
- https://www.ucl.ac.uk/taxome/jim/Sp/speconc.html
- https://en.wikipedia.org/wiki/Peripatric_speciation