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Questions tagged [predation]

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4
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2answers
92 views

Is it possible for a prey to become its main predator's predator?

This is actually for a worldbuilding project, but I thought I'd just ask it here as it is solely about biology. Anyway, would it be possible for a herbivore, let's call him X, that is predated by a ...
4
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2answers
79 views

Are there any pairs of animal species that regularly prey on other?

I don't mean cannibalism within a single species - I mean, are they are any pairs of species A and B such that members of species A regularly prey on members of species B, and also members of species ...
1
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0answers
29 views

Why are there so many species of large predator on the African savanna?

On the tropical grasslands of Africa, there are loads of large carnivores. Lions, cheetahs, leopards, hyenas and wild dogs are all found, sometimes, in the same place. I was wondering, why is it that ...
3
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2answers
1k views

Can predator-prey relationship be an example of negative feedback?

Predators eat their prey, prey population decreases. This results in the predator population to decrease, so less prey are consumed which causes the prey population to increase. Therefore, if the ...
2
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0answers
45 views

Do prey animals fail to see incoming pythons/snakes?

I understand that pythons are considered ambush predators, and I was under the impression that they tend to employ the sit-and-wait strategy: quietly staying in a coiled position near a trail ...
2
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0answers
44 views

Why do buffalos not leave the lion alone? [closed]

In the Buffalo Kill Lion - The Stronger is The Winner video the buffalos seem to be attacking an incapacitated lion. Why would they do that? They seem to risk injury for no gain (they don't eat ...
25
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1answer
3k views

Bird brain-eating Mantis - how does it crack the skull?

The New York Times' Science article Birds Beware: The Praying Mantis Wants Your Brain is a good read and is well researched. Apparently the larger Mantises have been documented to occasionally kill ...
1
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1answer
110 views

How does natural selection explain how organisms that are poisonous evolved? [duplicate]

Natural selection makes perfect sense when describing the evolution of say camouflage. For example 2 bugs of the same species live on a tree. One is mutated to look slightly more like a tree, so the ...
9
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0answers
140 views

What predates on cactus in the Atacama desert?

Introduction Last week, I was in the Atacama desert where I've seen many cacti. Some / many of them were seemingly suffering from predation. Most of predation seemed to be on cardón, often restricted ...
3
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2answers
328 views

Predators on the Galapagos

I understand that in many isolated islands, such as the Galapagos, there are no large predators. I find this observation interesting because it has been suggested that the lack of predators unleashes ...
5
votes
2answers
98 views

References concerning the relative population sizes of predator and prey

In an ecosystem, say there are two species in a predator-prey relationship. What is the most typical ratio of these species' population densities? For instance, it could be that for every fox, there ...
2
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0answers
15 views

Mackerel evolutionary health affected by loss of predators?

I notice that Atlantic Mackerel (Scombrus scombrus) is endemically affected by parasites. In one study I read that the researchers found that over 70% of the mackerel sampled were infected with ...
0
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0answers
171 views

What kind of predators do the snail's shell protect against?

Growing a shell is a significant material and energy investment for a snail. They have lots of predators which can easily eat them, having beaks which can pick them out or teeth strong enough to break ...
6
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1answer
1k views

What percentage of fish are herbivorous vs. carnivorous?

It appears that the majority of fish we eat are carnivorous, such as salmon and tuna. This got me wondering how common herbivores and carnivores are among fish species. I couldn't find an answer to ...
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0answers
25 views

Does the cactus wren use a call to elicit insect prey movement and detection?

I will be referring primarily to a 2013 paper, If a bird flies in the forest, does an insect hear it?, and my own investigation. Bird flight sound frequencies overlap with the hearing range of most ...
5
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2answers
120 views

How can bobcats feel the mice under the snow?

I've just seen the Planet Earth II's second episode "Mountains" where they shock us with these North American bobcats that can feel mice from the distance of several meters, sneak to them and kill ...
1
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0answers
103 views

Why are brightly coloured marine animals thought not to display aposematism?

There are many brightly coloured marine animals, such as fish, corals, sea stars, and octopodes. And yet Wikipaedia says it is thought that those colours don't serve to deter predators, while they do ...
0
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2answers
292 views

Predator prey interaction [closed]

I went through a line in my textbook which read: "But for predators, prey species could achieve very high population densities and cause ecosystem instability." I was not able to understand the ...
2
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1answer
635 views

do game animals have poor eyesight?

I have been watching some bow hunting videos on youtube. When hunting with a bow, the hunter needs to get really close to the animal, sometimes less than 10 meters. It seems to me implicitly, and ...
8
votes
5answers
5k views

What is the difference between a predator and a parasite?

A human encountering a tiger or a malaria plasmodium is likely to suffer, and the tiger/plasmodium is likely to gain from the transaction. Not necessarily a good example, and I am aware that a ...
25
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5answers
10k views

Why haven't prey evolved the ability to always outrun their predators?

I can understand why some prey can't outrun a recently evolved species. However, since cheetahs have existed for so long, why haven't its prey evolved to always outrun it, driving cheetahs to ...
6
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1answer
77 views

Do Asian giant hornets (Vespa mandarinia) prey on other nests of Asian giant hornets?

Asian giant hornets are known to attack nests of other bees and wasps, but should they encounter another nest of their own, would they attack it?
7
votes
1answer
173 views

Are there any animals that gradually approaches the predator to search for food?

I was wondering if there is an animal (or insect, bird, etc.) that eventually comes close to its predator to search for food, but only does so if it couldn't find food in the environment it is in. So ...
4
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2answers
444 views

Do reptiles hunt?

I encountered the following passage in the book The Art of Interactive Design by Criss Crawford (bold formatting is mine): [...] From stalking and evasion to the chase, the [interaction between ...
11
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3answers
2k views

There aren't any animals like hornets that hunt large prey (like a rabbit, or even up to a deer), right? Why not?

There aren't any eusocial animals (hives of wasps, ants, termites, etc) that hunt large prey, are there? I'm thinking prey in the size range of, say, a rabbit, or even a deer. I can't see a rabbit ...
4
votes
1answer
570 views

Why do spiders make their web near the ceiling and near a light source?

Why do spiders make their webs near the ceiling and near light sources ? Is their an advantage for spiders in doing that? For example do they catch more insects when their web is near a light source ...
9
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4answers
1k views

Why are the fertility rates of large predators kept low?

Predators at the top of a food chain, like lions, seem to have a relatively low fertility rate, which fits well to the ecosystem and avoids overpredation. But what is the mechanism that keeps the ...
5
votes
1answer
454 views

Why do the proportion of predators increase at mass extinction events?

Why does predation surge with mass extinction? It is caused by extreme selective pressures over resource competition that forces certain species to adapt to predatory niches?
34
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2answers
3k views

Why is menstruation in wild animals not a disadvantage to organismal survival?

When I watch wilderness specials for more than a few minutes, I notice a familiar pattern: predators are depicted as being alerted by the scent of blood. Wounded animals seem to make the best prey and ...
6
votes
2answers
335 views

Premise of life cycle synchronization between predator and prey

While reading about the predator satiation hypothesis of the periodical cicadas' 13/17 year life cycles, I started wondering about its premise. By the way, I understand the math behind the prime ...
25
votes
7answers
4k views

What prevents predator overpopulation?

I've often heard that a population, human or otherwise, will continue to grow as long as there is food available (assuming nothing else is killing them off). It makes sense: if you have food you can ...