2019:groups:g7:start
Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
2019:groups:g7:start [2018/12/18 18:46] – felpudo | 2019:groups:g7:start [2024/01/09 18:45] (current) – external edit 127.0.0.1 | ||
---|---|---|---|
Line 1: | Line 1: | ||
- | **Group | + | **Group |
+ | |||
+ | |||
+ | < | ||
- | ====== Fishers vs Pirates: Does Crime Pay? ====== | ||
Line 10: | Line 12: | ||
If you are a group member login to edit this page, create new pages from it, and upload files. | If you are a group member login to edit this page, create new pages from it, and upload files. | ||
- | ==== Introduction ==== | + | ===== Introduction ===== |
+ | {{ https:// | ||
+ | Some animals are widely known for resorting to a different way of obtaining food: theft. Species that steal for eating are known as kleptoparasites. Usually they choose other species as victims, but that's not always true. Some species, like the kelp gull (//Larus dominicanus// | ||
+ | |||
+ | One factor that affects the success of pirates is how many of them exist in the population. If there are few pirates and many fishers, there might be many gulls to steal from, making the theft easier. Otherwise, if there are many pirates and few fishers, there may be competition between pirates, and finding a gull to steal from may be hard. | ||
+ | |||
+ | Food availability may also be a factor: if there is plenty of fish, then fishing may be very easy. The age of a gull may be important as well - juvenile gulls tend to have less experience on fishing and will choose to be a pirate more often. The handling time of the fish may also be relevant, as a fish that takes too long to handle leaves the fisher more susceptible to a pirate. | ||
- | Some animals are widely known for resorting to a different way of obtaining food: theft. Species that steal for eating are known as kleptoparasites. Usually they choose other species as victims, but that's not always true. Some species like the kelp gull ('' | ||
- | The main reason that may take a gull into being a pirate is that, in some occasions, it may be easier to steal. But there are many factor that affect the success of a stealing attempt, and sometimes being a pirate can be costlier than being a fisher. One factor that affects the success of pirates is how many of them exist in the population. If there are few pirates and many fishers, there might be many gulls to steal from, making the theft easier. Otherwise, if there are many pirates and few fishers, there may be competition between pirates, and finding a gull to steal may be hard. | + | ===== Assignment ===== |
- | Several other factors influence the choice of a gull. Food availability may also be a factor. If there is plenty of fish, then fishing may be very easy. Also, the age of a gull may play an important role. Juvenile gulls tend to have less experience | + | Build a mathematical model that describes |
- | + | ||
- | ==== Assignment | + | ===== Suggested Questions ===== |
+ | * If the gulls' behavior is adaptive, what would be the " | ||
+ | * Are there conditions in which no gull would act as pirate? | ||
+ | * Is there an " | ||
+ | ==== Challenge ==== | ||
- | ==== Suggested Questions ==== | + | * From an evolutionary point of view, is there an " |
- | ==== References ==== | + | ===== References |
Steele, W. K., & Hockey, P. A. (1995). Factors influencing rate and success of intraspecific kleptoparasitism among kelp gulls (Larus dominicanus). The Auk, 847-859. | Steele, W. K., & Hockey, P. A. (1995). Factors influencing rate and success of intraspecific kleptoparasitism among kelp gulls (Larus dominicanus). The Auk, 847-859. | ||
2019/groups/g7/start.1545158808.txt.gz · Last modified: 2024/01/09 18:45 (external edit)