2. (two points) A researcher is studying the mating calls of a widespread specie
ID: 214470 • Letter: 2
Question
2. (two points) A researcher is studying the mating calls of a widespread species of syrphid fly. She discovers that males differ greatly in their banding patterns, but females are essentially identical. In laboratory crosses, females do not discriminate among males with different banding patterns, BUT, when they mate with males that do not have a banding pattern typical of the area they came from, these crosses produce eggs that do not hatch. a) Are these flies a single species, or perhaps a species complex? Is there an isolation mechanism? Explain? b) Go online and research. Give at least two examples of species complexes composed of morphologically similar microspecies or cryptic species. e) What is a syrphid fly? Research a few species and describe the ecological niches they occupy.Explanation / Answer
2a. a species complex is a group of morphologically similar species which are closely related to each of other. They consist of cryptic species.
this is a species complex. The eggs do not hatch due to reproductive barrier among the species. post-zygotic -isolation is occur. Post-zygotic isolation prevent the formation of viable eggs
2b. Cryptic species are the species that are morphologically similar but they are genetically different.
examples of species complex containing crptic species are Motacilla flava and Phylloxera caryaecaulis
2 c. syrphid fly is also known hover fly or flower fly. It sucks the nectar of a flower. It is an important pollinator. It has many genera and species. The abdomen has bands and head has small antennae.
some of the species of it are as follows:
An ecological niche is a place or area where a species plays its role and take its resources and fulfill its daily meet.
The ecological niche of a syrphid fly is flowers of any plant. They consume nectar and pollen from flowers.
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