Questions tagged [migration]
The migration tag has no usage guidance.
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How did migrations evolve?
Disclaimer: I know nearly nothing about biology.
I was wondering how did the migratory behaviour of birds evolve. Assuming that evolution/natural selection works slowly and gradually (at least most of ...
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What external signals do tell catadromous fish to go from the sea to the rivers?
What signals do tell catadromous fish to go from the sea to the rivers? Is it photoperiodicity? Are there any other signals?
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How far can locust swarms expand and beplague?
March 2020 is the the latest map that I see. I'm asking about all relevant species of locusts. What's the maximum effective range for these locusts swarms? Southern Europe? China? Japan?
I read Michel ...
user4466
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What's the smallest flier that migrates?
Painted ladies and monarchs migrate hundreds of miles (~1.61 hundreds of kms).
Are there long distance fliers that are significantly smaller?
Dual question: Are fliers' migration distances strictly ...
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Island model vs. stepping stone model
Wright's Island model and Kimura's stepping stone model are classic explanations for migration/gene flow o individuals between subpopulations within the field of population genetics.
My question ...
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Do birds change their diet before migration?
Migration takes up a lot of energy, so I am wondering if birds (in my case mallards) change their diet / food preferences in the weeks before migrating. Do they select for more energetic foods to fuel ...
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Simulating Migration in SimBit Software Program
How is migration incorporated into the SimBit program of Remi Matthey-Doret and Michael Whitlock?
Is an island model or stepping stone model assumed?
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Correct migration rate expression in infinite island model
In Sewall Wright's infinite island model, where all demes exchange migrants each generation, I have seen the migration rate stated variously as $m$ or $\frac{m}{d - 1}$ (as in Matthew B. Hamilton's ...
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How do migrating geese handle hurricanes?
I live on the East coast of the United States, where we are in hurricane season. This week during my morning bike rides in Charlotte, North Carolina, I have seen migrating Canadian geese.
I'm curious ...
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Population-biology, migration-patterns, & ethology of the Big Five (elephants, rhinos, lions, leopards, & buffalo) in S. Africa's winter months?
I know that animals are unpredictable, but I also know that there are seasons in which the wildlife are more active. Now, August in South Africa is still their winter season, which is emerging into ...
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Can immune cells be recruited to an area of inflammation, and later go on to a second?
With regards to innate or adaptive immune cells... can naive/immature cells such as neutrophils, monocytes, macrophage/dendritic cells or adaptive T-cells be recruited to an area of inflammation, for ...
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Did migratory birds' ancestors live in the places of migration?
I was studying birds' migration as a type of instinctive behaviour. But my textbook points out that other than for warm climate and easy food, migratory bird migrate to places where their ancestors ...
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How did the felines get to America?
I don't know if the felines got originated on America or on Africa, but I do know there are species of cat in America and Africa that belong to the same family and genus (Felidae & Panthera).
How ...
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How do migrating birds know where to migrate?
Migrating birds return to the same spot, year after year. These locations are often thousands of kilometers apart. How do the birds know where to fly to?
So far I have found that the birds tend to ...
user30163
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Why haven't environmentally-reactive bodies developed as an evolutionary advantage? [duplicate]
Regardless of region, earth's tilt results in yearly seasonal changes, which organisms deal with through processes like migration/hibernation. Both seem like attempts to avoid the extreme fluctuations....
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Do non-migratory canada geese still exhibit migration behaviors?
I have noticed that many of the geese in my region (NE US) remain overwinter. I also see many of what I guess (but am not sure) may be the same geese flying in migration patterns. One thing that makes ...
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What are the migratory patterns of Orcas in the Pacific Northwest? Do they pass by Vancouver in the Fall?
What are the migratory patterns of Orcas in the Pacific Northwest? Do the pass by Vancouver in the Fall?
I know you can never predict the sightings of a wild creature, but I was wondering what the ...
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How diverse are species in remote, isolated areas on Earth? [closed]
If we consider land areas that have been largely isolated from each other from a human point of view, but with a similar climate – for example, a part of Europe and a part of Americas with a similar ...
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How do animals end up in remote areas?
I was thinking specifically about random marshy water holes on farmers fields. It seems that you can visit just about any one of these and you will find frogs if you look hard enough.
They usually ...
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Do butterflies pass over migration patterns to their offspring?
So, earlier, I read online (http://io9.com/butterflies-remember-a-mountain-that-hasnt-existed-for-509321799) that Monarch butterflies veer east during their southward migration to avoid a mountain ...
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Biostatistics: Pollen dispersal directionality
What Information am I looking for?
Think about a tree that is sending pollen all over the place. Because of wind, most pollen grain will go toward one direction. Imagine, we split the 2D area around ...
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What triggers the migration of robins?
I live in central Massachusetts, and have begun seeing robins, as we generally do in early March. The temperature is well below normal, though, and three feet of snow are covering the still-frozen ...
