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The biological study of animals.

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Do the “solar-powered” sea slugs, like Elysia chlorotica produce more oxygen than they consume?

Do the animals that utilize photosynthesis produce more oxygen than they consume for themselves?
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22 views

Scientific name priority

Normally, the same name fora genus cannot be used for another genus in the same Kingdom, but if so then the earlier-published name normally takes priority. But what if a genus name is also the name of ...
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1answer
16 views

Why do most internal parasites infect more than one kind of host?

I knew that there were some parasites that infected more than one kind of host species, but now that I am looking into it, it seems like a majority of internal parasites have this kind of life cycle. ...
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0answers
11 views

Honeybee relatedness: workers and nephews

This is my first question on this site. If anyone could help me get to the bottom of it, I would be very grateful. I am currently working on a lecture on kinship in animals. It goes without saying, ...
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1answer
67 views

What is the name of this red and blue striped spider (?) - Brazil, Rio de Janeiro

Anyone knows the name of this thing? I found it in our bathroom. It is maybe 10-15 mm. It looks like a spider but the colors left me puzzled
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1answer
12 views

Why is the spirit bear/Kermode bear a subspecies of the American black bear Ursus americanus?

The Kermode bear Ursus americanus kermodei is only found in British Columbia,Canada. The Kermode bear has single nucleotide polymorphism at the melanocortin 1 receptor gene (mc1r) locus which cause ...
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0answers
37 views

Do Squirrels have 4 legs OR 2 arms and 2 legs? [duplicate]

Do squirrels have four legs, or two arms and two legs? I first asked this question many years ago, and it has since unearthed a whole array of conundrums and questions that I have struggled to get a ...
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1answer
45 views

Data for giraffe subspecies population change over the time.

Is there a historical data for the number of animals in the wild for every subspecies of the giraffe and where it could be found?
2
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1answer
17 views

Is there a record of species kept in zoos worldwide and number of individuals? If yes, can one have access to it?

Looking for the number and species of wild cats kept in zoos to assess the potential pool of individuals available for reintroduction programmes.
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1answer
25 views

How does transition of osmoregulation occur in fishes when they migrate from sea to rivers and vice-versa

From my high school level knowledge I can recollect that there are two types of migration in fishes- From marine to fresh water (like in Hilsa which grows in the marine water but migrates to the ...
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1answer
36 views

Will a dog develop similar feelings with a robot as like human?

I think we are connected to the world by Biochemistry first and then physical and verbal interactions. If a robot feeds a dog regularly, pampers it and cuddles it regularly, would it develop the same ...
2
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1answer
30 views

What does the hornet do on the ivy blossoms?

We've got blooming ivy growing around a tree. Since several weeks lots of hornets have been whirring in the foliage and I wonder whether they want to feed on insects that are lured by the blossoms or ...
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2answers
117 views

Has evolution made a mistake with prehistoric animals?

Let me start this by saying I have very limited knowledge in biology and evolution. However, when visiting museums and watching documentary movies, I always get impression dinosaurs (and other ...
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2answers
32 views

Cross-species infections

I’ve heard that HIV developed from SIV, etc. I’ve also heard that most species (including most monkeys) can’t get a common cold like humans. So then what causes infections to be able to travel ...
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0answers
13 views

There is any way to know from what animal a piece of bone came from?

On one of my recent trips i found some broken bone pieces, probably from a rabbit. Then i put myself on the mind of a paleontologist and i was curious on how could one person clasiffy bone shards, for ...
2
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1answer
54 views

Is the “Manhattan Ant” a new species; still only found in Manhattan's Upper West Side?

I've stumbled upon the viewing.nyc article Upper West Side Has Its Own Ant Species Dubbed the "ManhattAnt" which says: Columbia University biologist Rob Dunn has discovered a unique species of ant ...
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0answers
24 views

Can Anyone Identify this Tissue?

I am hoping someone can identify the image below My wife felt a bug bite her and found this in her hair now she's worried that it was a tick. the photo is at 40X under microscope. I'm guessing it's ...
2
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0answers
47 views

Larva attacking frog ? Guide about this

The above picture was taken in western forest of India where a larva attached itself to a frog neck. What is it and how it will effect the frog?
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29 views

Can you tell me the ID of this bird

Picture taken on September 2018 by me in India
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30 views

Please give information about this sun bird

Please tell me name of this sunbird picture taken by me in 2016 in India
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0answers
18 views

What kind of sieve does one use to extract meiofauna?

Suppose I have a core of sediment, and I want to extract the meiofauna from it, in order to study these organisms. According to the sources I could find, this involves using a very fine (e.g. 45 μm) ...
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0answers
13 views

American Red Squirrel (Tamiasciurus hudsonicus) physical dimensions?

I am trying to determine the physical dimensions of the American Red Squirrel so that I can construct a graphic representation for a project I'm working on. Mainly, I lack standing height and width ...
2
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0answers
21 views

Efficacy of sonic kangaroo deterrents

Bender (2003) tested the efficacy of sonic kangaroo deterrents. Their device is static (and apparently ineffective). Has there been any rigorous testing of the whistle-like 'kangaroo deterrent' ...
3
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1answer
84 views

Why do crocodiles have a high concentration of lactic acid in their blood?

Crocodilians have high concentration of lactic acid in their blood. This is the cause that prevents them from prolonged intense activity, since prolonged intense activity causes the muscles to secrete ...
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31 views

Which extant species has the largest horns?

Among the bovids (cattle, antelope and all member of the Bovidae family): which species has the largest and longest horns? Please answer when including and excluding domesticated livestock and cattle. ...
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1answer
53 views

What kind of red/green/black, spiny caterpillar is this?

It's red and lime green with black on its back and a few white spots as well. Found in Tulsa, Oklahoma (USA).
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2answers
193 views

Among primates, is it true that homosexual behavior is extremely unnatural and uncommon?

I was recently reading a book published by some anonymous biologist known as Lynn Saxon, in which she appears to want to refute Christopher Ryan's thesis in Sex at Dawn that prior to the invent of ...
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What kind of horn is this?

We found this horn and know nothing about its origins. It seems super short! Maybe we are mistaken in thinking it is a horn at all...
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20 views

Is there mismatch in injures or death numbers for carnivores that hunt during day time and night time?

Is there significant mismatch in injures or death numbers for hunters (when hunter was killed or injured by its prey), between day time and night time hunts (carnivores that hunt during the day time ...
4
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1answer
62 views

Why are the hormones dopamine, adrenaline, noradrenaline and serotonin so ubiquitous across the animal kingdom?

As far as I know there is no reason for the makeup of a given hormone to be universal as it merely serves as a carrier from one part of the brain to another. So why are the above hormones seen across ...
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0answers
35 views

Is it more risky for lions to hunt during the night?

Lions as I understand are very versatile hunters. Using many different hunting strategies to increase their success rate including hunting during the night. Do they risk more during night hunts (...
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0answers
40 views

Is there a limit on how big a free living unicellular mono-nuclear organism can be?

When I looked for the largest protozoan I've found the name Syringammina fragilissima. According to wikipedia " .. Syringammina fragilissima, is among the largest known coenocytes, reaching up to 20 ...
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0answers
55 views

Is this is a parasitic wasp, which I found in Blackpool Lancashire?

A wasp I photographed on my van window in Blackpool just before it attacked me. Is it true that it’s rare to see them in the UK?
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33 views

What is this white bird called?

White bird that looks like a pigeon or a dove. Does anyone know what it’s called?
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554 views

Insect identification - Is this a baby cockroach?

This bug was found in a kitchen in Augusta, Georgia. I've seen it three times in two days (and some more in the past). Two nights ago, It was on my arm. Last night, I saw one on the kitchen floor and ...
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1answer
42 views

What are the classical adaptations of amphibians? [closed]

My question is about amphibians in humid or underwater environments. What biological adaptations can found in them, further what purposes do they serve?
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1answer
34 views

Why do frogs and toads only appear when it is dark outside?

I noticed outdoors how frogs and toads only appear when it is dark or cloudy. Such as only after it rains or during night time. Why is this?
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1answer
34 views

Why swordfish aren't put in the same family as Marlins?

Why Swordfish (Xiphias gladius), which are very similar to Marlins, do not belong to the same family as Marlin - Istiophoridae? Both has long bill or a sword in the upper jaw, both has (at least in ...
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0answers
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How did craniates evolve?

Looking at most chordate phylogenetic trees, it seems that we usually have something like this: ...
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1answer
98 views

Identify this excreta!

A picture is worth a thousand words! It's about 1.3cm (1/2") long. We rented a basement and I found this on a machine that was moved in a bit earlier. I would like to know if there are any mice, ...
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1answer
76 views

If wolves (or foxes) are fitter than rabbits, why rabbits have not become extinct? [duplicate]

I do not pretend to "demolish" the Darwinian theory of biological evolution and the "survival of the fittest", that's far from my intention. I have this doubt because of the fact that humanity, as ...
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1answer
65 views

What benefits do sloths and manatees gain from algae growth on their fur/skin?

Slow moving sloths and manatees have green algae growing on their fur/skin. Are there any other animals that have algae growth on them, and does the algae benefit the fitness of these animals? ...
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51 views

Can anyone identify this insect, is it a tree bug species

This insect was found in Pune, India near a Bauhinia variegata (orchid tree). I think it's a bug. What species is it?
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25 views

Butterfly/Moth identification: Puppa is half green, half brown, and 1,5cm long, found in Upper Austria

Question: What butterfly is going to evolve out of the puppa illustrated in the attached picture? Characteristics: Puppa is half green, half brown, and 1,5cm long Further details: I don't know if ...
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0answers
38 views

what's the species identification of that camponotus queen

City: Antalya, Turkey Date: July 27 night Specific location: I found it in the middle of the city
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29 views

Why is Engraulis encrasicolus(boqueron) conservated in fresh water?

I've been visiting fishmarkets for a while and ive percieved that fishmarketers usually conservate Engraulis encrasicolus (boqueron, anchova, etc) in fresh water with ice. They say that it is because ...
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0answers
95 views

Is this a bed bug nymph?

hello , I want to know if this is a bed bug nymph or it's just an another insect? I got an issue with bed bugs few days ago in a hotel during a travel to Prague. Once home (in Germany), I washed all ...
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0answers
26 views

Can someone identify this Lepidoptera larva?

That's from Brazilian Amazon, more specifically a small mountain (300 m high) called "Morro dos Seis Lagos" (six lakes hill), at São Gabriel da Cachoeira municipality, Amazonas state, located at 0.283 ...
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1answer
31 views

Is it possible to guide animals to a new breeding ground?

(This is a question for a book I'm working on.) One of the threats to some animal species is the disappearance of breeding grounds (because of the spreading human population, or for example because ...
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1answer
126 views

Caterpillar resembling a snake

I found a very interesting caterpillar. It's 5 cm long and looks like a snake. I discoved it in a greenhouse on a vine in the Czech Republic. I found two types: a green one and a brown one, both ...