Questions tagged [species]

The basic unit of taxonomic classification.

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Have there been multiple aboriginal species of dogs?

In "Variation under Domestication", Darwin writes that: I may here state, that, looking to the domestic dogs of the whole world, I have, after a laborious collection of all known facts, come to the ...
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Is there a definition of species where Lions and Tigers are the same species?

According to Species concepts There are at least 26 recognized species concepts And according to Why are lions and tigers considered different species (not sure how reliable this source is though, ...
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Please help me identify what worm this is? I found it in my dogs water bowl

Please help me determine the type of worm this is. I’m very frightened. Thank you.
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What are the sufficient criteria that make an entity a living homo sapiens? [closed]

When I say criteria I mean like x biological functions or y genetics. If it were to be appearance,anatomy. A corpse completely looks like a man. Moreover a person who has had their 4 limbs amputated, ...
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What is a “Valid Species”?

I read in a reference book on Google Books (Biology of Termites: a Modern Synthesis, eds. Bignell, Roisin, and Lo) that the termite Heterotermes perfidus found on the South Atlantic island of St ...
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Trying to identify a bug that left a blood spot when killed

Hi, this was flying around inside the car in northwestern Maryland, USA, yesterday. When I squished it with a tissue I was surprised to see a red spot that appeared to be blood. Cannot find a picture ...
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How many different species have existed on Earth?

NOTE: Someone else asked this same question a few years back, but it was incorrectly marked as a duplicate and so the question may not have been answered satisfactorily. I'm asking it again, in hopes ...
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What is this tiny, transparent creature found in my home?

Found these in my bathroom, everything was literally crawling with them - there were thousands of those on walls, sink, bathtub... I have all surfaces were sprayed with chlorine spray and with bug ...
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What is this soft cased worm-like creature?

Found this creature in the bathroom Features which ought to help for identification: Size = 1 cm Soft casing Can emerge from either end of its case and thus reverse the direction it crawls. Many ...
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Are there poisons that affect only mammals but not reptiles

Are there poisons that affect only mammals but not reptiles or crustaceans? E.g. hemotoxins which affect hemoglobin but not hemocyanin or specific Na+ channels? Looking for a "nice" poison/disease as ...
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Worm Identification

Please identify the attached worm and larvae. Location: Payette, Idaho Approximate size: 1 mm Found in home.
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Cross species effects of Apis mellifera queen pheromones

I am looking for studies that show effects of Apis mellifera queen pheromones on other species. An example of one such study is where A. mellifera queen pheromones deactivated the ovaries of ...
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Database of colors mapped to species

I was wondering about the physics of color, and now am interested in finding out if there are any resources (databases, text files, html tables, or pdf listings) of species and their associated colors ...
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Help me ID snake

Could someone please tell me if this is a cotton mouth? Found 2 on my back porch, one got away. Location: Fayetteville, AR (USA) [Note: there are several ponds nearby]
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What species of frog is this?

I was walking around outside my house when I found this little guy clinging to the outer wall of my house. The house in question is located in Indiana, United States. What is interesting to note is ...
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Is it possible to make an estimate of how many species extincted before humans?

This article Species Extinction Happening 1,000 Times Faster Because of Humans? makes an estimate of the rate of extinction now and 200,000 years ago. I know it's difficult but since there are ...
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Why are mules/donkeys aggressive when faced with predators but horses are not?

I came upon an interesting quote after going down the rabbit hole on a variety of subjects. While deep in the data, I came upon this quote oat and farm animal owners likes to have mules with their ...
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Tiny bug in Amman-Jordan

I saw this bug many times in my room this spring. Can any one help identifying it?!
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what is the name of this fish?

]2 fishes are of length 2 to 3 inches.
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What makes an E.coli an E.coli, genotype or phenotype?

According to this paper, among 61 strains of E. coli they studied only 6% of the genes are common in all. Which means that the overwhelming majority of the genes are not shared. And wikipedia ...
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Mild introduction to selective advantage of intelligence/nervous systems in animals?

I have a general understanding of why intelligence, i.e. nervous systems in animals, is advantageous: processing information allows an animal to adapt to its environment dynamically and perform ...
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Can two different species in the same genus generally succeed in the same habitat?

This plant-care website writes In the context of plant care, usually most plants within the same genus need the same environmental conditions suitable for plant growth. If the genus of a plant is ...
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What is this insect

This was found in my house in florida
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What kind of fish is on the picture?

I saw these fish in a video at an art exhibition, I'd like to find out what kind they are.
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Do ring species exist?

In trying to understand evolution better, I have been looking at examples of speciation, and have thus come across the topic of ring species. I have tried to find concrete examples of how these work, ...
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Anyone know what emerged from these cocoons?

Found a little universe in the back of a ceramic decoration I put up outside in summer...the concave back was full of grainy soil and several exited cucoons...anyone know what critter this is/was?!
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I'm trying to identify this salamander-looking creature I found in my house today in Coos Bay, Oregon. It is about 2" long. What is it?

This is about 2" long. It is white on its underside and looks like a small salamander, except for it being white underneath. It is about 1/8th inch wide.
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What is my pet tortoise' species?

I got this tortoise from my uncle. He said that it wandered into his yard. Found in Khon Kaen, Thailand during the summer.
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What is the name of the bug that emerging from a wood chip like cocoon?

We found it on the wall of a home at West Palm Beach Florida. Is this a kind of infestation or a sick tree near the house fall on the wall?
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What is the name of this spider and is it poisonous?

We found it between Palm trees in the backyard of a home in West Palm Beach Florida.
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What kind of snake is this

Found this outside on patio in northern Virginia, Ashburn area, September 2018. It's about 12 inches. Is it a water snake or rattlesnake?
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What is this? Found crawling across ground under oak tree. Six arms waving, I broke off 1 trying to pick it up. Less than 1 inch long

Crawled like snail. No slime trail. Less than one inch. Six arms, I broke one off.
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What species of butterfly is this? Picture taken on 9-18-2018, near Helena, Mt

Butterfly picture taken on the 18th of September 2018 at an elevation of 1800 meters (6,000 feet) near Mount Helena in Montana, USA.
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The meaning of and standards for “specimen numbers”

I just read here: For example, in the research collection of the Natural History Museum in London, there is a bird specimen numbered 1886.6.24.20. This is a specimen of a kind of bird commonly ...
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Any examples of a group of micro-organism that continuously spans two or more species classifications?

Are there any examples of a group of micro-organisms where two different, established species are designated and these two groups meet all aspects of the definition of species (perhaps can not ...
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Is Human a race? [closed]

Is it correct to say that 'humans' are a race? Will it also include apes and chimpanzees? Can I use the terms 'species' and 'race' interchangeably?
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Question about the quantity of orchid species and genera

One flower which I am reminded of is the orchid and conjointly, the Orchidaceae family. I am surprised when discovering there is an abundance of species and genera, hence I would like to know the ...
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Can Anyone Tell Me , Which Insect or I think Moth Is This

Region : Asia ( India ) , Size is about : 4 cm . Since yesterday this Insect is in the same place . I don't know any other info , I was just curious to know about this Insect.
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Can anyone identify this bird - small flock in ireland?

I saw small birds in a flock of about 6 or 8. Here are details that can be seen on my best photo - The beak looks pointed and also the legs are quite long and the eye has a bar across it. I have a ...
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Time taken for species to become endemic [closed]

Is it known how long species take to become endemic? I know from examples such as Canada which have no endemics following the end of glaciation that the process must take at least 10 thousand years, ...
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Black oyster of sweet water

I have seen recently a documentary starting with introducing of the spectacular black oyster of sweet waters which imitate exactly like a prey fish in order to convey its eggs to predator fish's gills,...
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Is this a Tsetse fly?

I found this on my back while looking in the mirror.It took me 10 minutes to kill it.I hit it well at least 5 times before it died.It kept flying to me every time i tried to hit it,trying to go under ...
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3cm Worm Found in a Glass of Tap Water - please help identify

3cm Stripy Worm Found in a Glass of Tap Water - please help identify. The worm was found in the beginning of July in a glass of tap water, in Ireland. It was about 3cm long, had a round shape and was ...
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What is this tiny translucent worm I found on my desk?

I found this tiny critter crawling vertically up my speakers. It seems to crawl like a caterpillar, but strangely, every now and then, it stops, rears-up and look/ feel around. It looks sort of grey/...
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Is this an Eastern Banjo Frog?

[ I found this little guy in my orchid on the upstairs balcony. I live at Sanctuary Point which is on the south coast NSW
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Can anyone tell me what this is? [closed]

On my one plants, this green worm is all over it, with white and yellow cocoons on the Leaves.
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What type of spider is this?

What kind of spjder is this? It was found in nova Scotia
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What bird is this seen trekking in Nepal during descent on Manaslu circuit?

What bird is this seen trekking in Nepal during descent on Manaslu circuit?
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Most well studied termite species or a species that I could use to compare termite genes for functional annotation

I am working with termites and I have a set of genes that I would like to compare with a species similar to termites so that I could elucidate its function. I am looking for a species that is similar ...