Skip to main content

Questions tagged [predation]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0 votes
1 answer
35 views

Overly stabilised population dynamics model

My project aims to model population dynamics of a 3 trophic levels system: primary producers, herbivores and predator. I try to predict how changes in the vegetation abundance might affect higher ...
Rachel's user avatar
  • 1
2 votes
0 answers
55 views

How do Addax defend itself from predators?

The addax (Addax nasomaculatus) is a critically endangered antelope adapted to live in extreme desert conditions. It has long impressive horns that can potentially serve as a weapon because they are ...
Triceratops's user avatar
  • 1,176
1 vote
0 answers
56 views

Is there any evidence that mammalian ears can act as thermal receptors?

Some snakes have a "pit organ" capable of sensing infrared radiation. The structure is similar to a primitive pit eye. Snakes are cold-blooded and their prey is generally warm-blooded, so it ...
Roger Wood's user avatar
1 vote
0 answers
96 views

Why have mammalian predators been so small compared to their prey compared to theropod dinosaur predators?

So this is different than the question of "why are megafaunal mammals smaller than dinosaurs", which I understand to be a combination of: live birth limiting size (even sauropods had ...
Krupip's user avatar
  • 381
5 votes
0 answers
103 views

Why don't hamsters exhibit a fear response when other hamsters nearby are under attack?

There is this live feeding video on youtube that displays 30 live hamsters being eaten by 4 bullfrogs. You can find it here: https://www.youtube.com/watch?v=rz4Or3o-jHA What struck me as extremely odd ...
Maurice's user avatar
  • 253
1 vote
0 answers
24 views

Chronic-stress of predation risk in vertebrate prey

Prey must be vigilant when their predators are around. Predators may affect mortality (and morbidity, i.e. loss of quality of life) through these mechanisms: Direct attacks, including injuries ...
Kevin Kostlan's user avatar
27 votes
3 answers
6k views

Did predators evolve eyes first?

I'm an engineer and biology is my weakest point, so please forgive if this question is dumb. Lately I've been wondering, "Why do animals that have eyes tend to have exactly 2 of them?" The ...
James Strieter's user avatar
1 vote
1 answer
87 views

How selective are wolves about the size of their prey?

For an animal that lives and hunts socially like a wolf, is there a lower threshold to the size of prey items they will hunt? A pack wouldn't have much trouble with catching say a rabbit, but would ...
pbuchheit's user avatar
  • 113
1 vote
0 answers
70 views

Maternal Effects

Does anyone know of a good review of non-human maternal effects, preferably the most recent? I'm looking for a breakdown of the most well-studied/least studied biotic and abiotic cues. Perhaps ...
Tavaro Evanis's user avatar
1 vote
0 answers
57 views

Confused About Why Red Queen Hypothesis Wouldn't Apply to Deer's Color Vision [duplicate]

In this site,https://www.livescience.com/why-are-tigers-orange, it says ""But there seems to be no evolutionary pressure, particularly for deer, which are the main prey of the tiger, to ...
MeltedStatementRecognizing's user avatar
2 votes
1 answer
278 views

Examples of bifurcations in real-life systems

Does period-doubling bifurcation and Neimark-Sacker bifurcation happen in real-life systems? Are there some examples? I'm particularly interested in biological host-parasitoid and predator-prey models....
User154's user avatar
  • 123
1 vote
1 answer
70 views

Refuge impact on growth rate

I have a question related to the refuge effect in ecological models. The assumption is that the population of hosts/prey is divided into two groups. One group consists of individuals that are safe ...
user121's user avatar
  • 125
6 votes
2 answers
2k views

Do cheetahs compete with lions?

Do cheetahs compete with lions for the same prey? A quick Google search says the answer is no: Lions hunt big animals such as buffalo, giraffe, wildebeest, and zebra. What prey do cheetahs hunt? ...
rwallace's user avatar
  • 187
0 votes
0 answers
58 views

Why does the ecosystem of my house seem inverted?

My understanding of a typical ecosystem is that it is like a pyramid, with the mass of prey at the base and the apex predators at the peak. However, the arthropod ecosystem in my house seems to be the ...
SlowMagic's user avatar
  • 535
1 vote
0 answers
30 views

Do *Ambystoma macrodactylum* predate on *ceuthophilinaens* like the one I observed?

I observed this Ambystoma macrodactylum within half of a meter of this Ceuthophilinaen under an old board. I can imagine salamanders eating cricket-like things, but this question is far outside my ...
Galen's user avatar
  • 1,055
4 votes
1 answer
598 views

What's the definition of 'natural prey' and 'natural predator'?

I am sure we all see both of these phrases used commonly, but is there a reason as to why the terms 'natural predator' and 'natural prey' are used as opposed to just 'predator' and 'prey'? Below are ...
Satyajit Sen's user avatar
1 vote
0 answers
73 views

How do predators avoid "food poisoning"?

How do predators avoid becoming ill in cholera, diarrhoea, dysentery and similar diseases? They aren't exactly careful when eating a kill, especially pack animals where there can be quite a fight over ...
d-b's user avatar
  • 365
5 votes
1 answer
174 views

What are these animals, and what happened here?

While walking along the northern shore of Lake Ontario, I noticed the following strange scene: Here is a closer angle: What are these animals, and what is the likeliest cause of this?
416E64726577's user avatar
7 votes
0 answers
109 views

Grasshopper vs Tarantula?

This past weekend (October 2021) while hiking west of the VLA in New Mexico (near Datil, NM, ~2200m elevation) my wife and I came across a strange sight. A small (5cm long), likely immature, ...
Jon Custer's user avatar
1 vote
1 answer
92 views

Have orcas ever been observed to be eaten by another species?

Orcas are well known to prey on just about everything that lives in the ocean, even including great white sharks. Yet in a lot of cases I know that the food chain is not unidirectional, there are many ...
user2352714's user avatar
17 votes
1 answer
3k views

Why aren't native predators in Australia able to handle the mice problem?

Australia is currently dealing with a mouse infestation problem, but Australia is awash with different types of predators that presumably eat lots of mice like animals. Snakes in particular are well ...
Krupip's user avatar
  • 381
34 votes
8 answers
10k views

Do "shooting" animals exist?

The well-known cartoon imagery of porcupines shooting their quills at opponents in a fight is just that: a silly cartoon concept that isn't real. But it makes me wonder, does that mechanism exist ...
Mason Wheeler's user avatar
0 votes
1 answer
56 views

Why do predatory mites have to be introduced multiple times?

I'm combating spider mite infestation using either Phytoseiulus persimilis or Amblyseius californicus. After extensive study of the literature, I'm still unsure why the producers of these predatory ...
CuriousIndeed's user avatar
7 votes
1 answer
238 views

How do snakes determine the direction of prey from their thermal infrared sensing pit organs?

This answer to How does the “heat vision” of some snakes work? explains the basic idea and there are several linked sources within that go into greater detail on the sensing mechanisms on a physical ...
uhoh's user avatar
  • 5,598
0 votes
0 answers
61 views

Why do Oak Processionary caterpillars form processions?

Firstly ,I don't live in Europe. I live in South India, and my garden has a Night Flowering Jasmine tree. And these trees are quite popular, but notorious for their caterpillars. In our region ,there ...
Amarylis Vaselaar's user avatar
1 vote
1 answer
28 views

Are there any examples of predators that ambush scavengers?

I'm specifically asking about animals that use a hunting strategy revolving around hanging around cadavers to attack animals attracted to the cadaver, or even leaving part of their catches out to lure ...
0xFFF1's user avatar
  • 379
1 vote
1 answer
90 views

What "algorithm" are carnivorous larvae using when foraging?

What algorithms are carnivorous larvae (lady bugs like Adalia bipunctata, Coccinella septempunctata, common green lacewing (Chrysoperla carnea) or hoverfly (Syrphus)) using as they are foraging for ...
emacs drives me nuts's user avatar
-2 votes
1 answer
52 views

What species mimics two others?

Richard Dawkins in 'the selfish gene': But there are species of mimic that do something very strange. Some individuals of the species mimic one nasty species; other individuals mimic another. ... ...
user59918's user avatar
5 votes
1 answer
3k views

What are the predators of Glaucus atlanticus?

I'm researching the Glaucus atlanticus, also known as the blue glaucus, among various other names, but after reading quite a few articles and searching on the Internet as many different ways as I can ...
米凯乐's user avatar
  • 345
4 votes
2 answers
194 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 ...
SealBoi's user avatar
  • 253
4 votes
2 answers
401 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 ...
tparker's user avatar
  • 717
1 vote
0 answers
257 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 ...
SealBoi's user avatar
  • 253
3 votes
2 answers
4k 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 ...
Hari's user avatar
  • 31
2 votes
0 answers
68 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 ...
Justas's user avatar
  • 253
2 votes
0 answers
55 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 ...
sds's user avatar
  • 309
26 votes
1 answer
4k 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 ...
uhoh's user avatar
  • 5,598
2 votes
1 answer
307 views

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

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 ...
David says Reinstate Monica's user avatar
11 votes
1 answer
335 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 ...
Remi.b's user avatar
  • 68.2k
3 votes
3 answers
3k 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 ...
altroware's user avatar
  • 195
4 votes
2 answers
644 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 ...
Bobson Dugnutt's user avatar
2 votes
0 answers
24 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 ...
Imprisoned Rhesus's user avatar
0 votes
0 answers
232 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 ...
vsz's user avatar
  • 1,086
7 votes
1 answer
6k 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 ...
WetlabStudent's user avatar
1 vote
0 answers
37 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 ...
Dalton Bentley's user avatar
4 votes
2 answers
223 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 ...
Probably's user avatar
  • 2,438
1 vote
0 answers
159 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 ...
Cerberus's user avatar
  • 723
0 votes
2 answers
579 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 ...
Deepali's user avatar
  • 11
2 votes
1 answer
844 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 ...
Martin Vegter's user avatar
8 votes
5 answers
11k 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 ...
NL_Derek's user avatar
  • 323
27 votes
3 answers
12k 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 ...
Timothy's user avatar
  • 886