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Questions tagged [taxonomy]

Questions on the classification of biological organisms, and the methods used for classifying them.

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0answers
48 views

Appropriateness of PCA to visualize clusters in genetic data

In many genetic studies, PCA is often utilized to examine genetic cluster in human populations. Rarely is the % variance reported for the components. With human data it's been my experience that the ...
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2answers
148 views

Are Triceratops and Eotriceratops similar enough to be considered as the same genus?

Everybody knows Triceratops, the horned dinosaur from Late Cretaceous North America, who lived 68-66 MYA. In 2007, Eotriceratops xerinsularis was named and described (Wikipedia). It lived in (what is ...
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113 views

How would I represent this on a cladogram?

So, right now I am making a cladogram (More of a dendrogram) for a kingdom of fictional species, and I'm not exactly sure how to represent a certain relationship. Let's say that the oldest class in ...
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1answer
66 views

Identifying flying insect from southern Poland / Upper Silesia area

Yesterday evening, I spotted this quite huge insect at my home in southern Poland (the exact location of the place). Unfortunately, I have only a very low quality pictures available at the moment: ...
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1answer
9k views

Difference between Genus, Genus sp. and Genus spp

What is the difference between the three following sentences? There is significant increase in Bifidobacterium There is significant increase in Bifidobacterium sp. There is significant increase in ...
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1answer
62 views

How can a two genera share a latin name?

Recently, someone asked if species could share a latin name. In his answer, Remi.b said the latin name is unique to the species, and I think he is right. However, this made me remember that I once ...
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1answer
141 views

Looking for the closest example of life forms similar to some mathematical patterns

Caveat: this is my first question here, it is quite interdisciplinary, but I hope to be in the correct place to ask. I am a user of Mathematics Stack Exchange since some years ago, and this question ...
2
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1answer
33 views

Are there comprehensive species descriptions on most species?

I was having a browse through Wikipedia and noticed how even the rarest, hardest to find species of bird have comprehensive articles and comprehensive descriptions, but other species like the 1400 ...
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2answers
91 views

Why was Achromobacter xerosis removed from the NCBI taxonomy?

The Global Catalogue of Microorganisms lists a bacterium called Achromobacter xerosis which is mentioned in several papers and patents. It once existed in the NCBI taxonomy database, with ID 216898. ...
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1answer
152 views

Help me identify species of fruit fly?

I found this fruit fly in Pune/India. It was about 1 cm in size. I explored info on several species in same region, but they were different in appearance, especially that black spot in middle of body.
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1answer
546 views

What do the qualifiers used in botanical species names mean?

These are all the qualifiers I've come across so far. The first 3 were quite easy to google, but the other 4 have me stumped. I also can't say I'm completely clear on the nuances of ...
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50 views

what is the classification of this stream insect?

This insect I found from Southers region of Bangladesh. Its limbs are larger than its body.and the picture shows its dorsal part.
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36 views

need to identify species of this Leaf-footed bug?

I found this bug in Pune/India. I checked many species of leaf-footed bugs, but none of them is matching this one. It was about 3cm long. It was not showing any movement.
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1answer
323 views

The 4-chambered heart

Birds and humans have a four chambered heart. All animals having 4-chambered hearts are warm-blooded. Why are crocodiles an exception? Why are they cold-blooded even though they have a 4-chambered ...
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1answer
121 views

Distance between species

Is there an on-line database that will enable one to find the genetic distance between two species? I'm vaguely aware that there are various metrics used that may give different results, but I'm ...
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1answer
102 views

found this flying ant like insect in pune, help me identify it?

Is it species of wasp or ant or fly? I found it in Pune/India. I need its common name at least. Here is another photo I managed to take...Found at same place as previous one.
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1answer
94 views

Where can I find a compendium of microorganisms?

I recently bought a microscope hoping to learn more about algae and bacteria and stuff. I've collected a few samples of pond water and found tons of algae and stuff, but I have no idea what to call ...
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30 views

Plant determination: Lilium monadelphum versus L. szovitsianum

Lilium monadelphum, L. szovitsianum and L. armenicum belong to group of yellow flowering Lilium species and they are both often cultivated. These species come from Caucasus area, so the first two are ...
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1answer
450 views

Do archaea undergo the same horizontal gene transfer processes as bacteria?

Do archaea also undergo processes like conjugation, trasformation, etc.? If not, do they have their own horizontal gene transfer methods? Can bacteria conjugate with archaea?
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2answers
229 views

Do Black Pepper and Black Nightshade share specific characteristics?

In my textbook, I read that two organisms of the same species share specific or fundamental characters. Piper nigrum (Black pepper) and solanum nigrum (Black nightshade) share the same specific ...
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1answer
118 views

Insect identification: Fly with eye strip

Location details: Country - India, State - Tamil Nadu, District- Chennai. Found this fly in my backyard keen to know its exact name. Thanks for the help
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101 views

How to produce correct epithet of a species named in the honor of a person?

I want to name a new diatom species in the honor of Prof. Vodyanitskiy. What will be the species epithet: "vodyanitskiya", or other? Are there any rules that regulates how the end of such epithets is ...
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1answer
159 views

Would chimpanzees and humans normally be in the same genus if we weren't so sensitive about it?

Listening to the BBC's radio program The Why Factor particularly poignant episode What Can Chimps Teach us About Politics? hosted by Professor James Tilley, I heard Professor Frans de Waal of Emory ...
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1answer
227 views

Are freshwater jellyfishes really jellyfishes?

Articles from the aquaticcommunity.com and the Nature Conservancy suggest that freshwater jellyfish, Craspedacusta sowerbyi, are more closely related to the Genus Hydra. From the Nature Conservancy ...
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1answer
108 views

Finding phylogenetic distance between sequences?

I'm working on a piece of software that does comparative genomic analysis; and I found out in homology methods for functional annotation, it's preferable to pick the high scoring homolog from a ...
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29 views

How would extraterrestrial organisms be categorized?

Suppose we find bacteria on Mars, we sequence its genome, and find it is genetically similar to $E. Coli$. Would we categorize it in the $Escherichia$ genus? Or would we put it into a seperate system ...
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2answers
280 views

Are there two varities of dandelion leaves?

This is in India. I noticed a dandelion plant which had the familiar leaves. Right next to it there was another plant which had similar flowers and white tufts, but the leaves were different. Is the ...
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2answers
200 views

Did Carl Linnaeus ever name a species he never saw?

According to this post Carl Linnaeus named more than 13,000 species which is definitely quite impressive. If we consider a 50 years career it makes about 5 species per week! It would feel impressive ...
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142 views

What spider is that in south of Brazil?

I'd like to know if it is possible to identify the spider in the photo below. In fact, as shown in the next picture, it is very small. Location: South of Brazil.
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1answer
182 views

Insect Identification (even the family name would do)

I found this insect in Bhopal,Madhya Pradesh,India could you please help me identify it?? I think it is some kind of beetle. Approximately 2-3 cm in size.
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1answer
325 views

Largest extinct clade? [closed]

What is the largest (by large I mean most general) clade of organisms that has gone extinct? domain > kingdom > phylum > class > order > family > genus > species So, for example, an extinct kingdom ...
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1answer
86 views

What is the difference between kingdoms protistae and protoctistae?

I understand that both kingdoms represent primitive eukaryotic organisms, and both contain both unicellular and multicellular organisms. What are the points that distinguish one kingdom from the ...
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1answer
236 views

Praying mantis identification

I found this praying mantis in Bangalore, India. It is around 6 cms in length and has a distinct marking on the forelimbs. Can I know the species ?
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132 views

Why do scientists hold that there is no human race? [duplicate]

It has always seemed odd to me to say that there are no human races when there are clear features that set one group of people apart from another, like skin colour and average height. It is said that ...
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2answers
683 views

Do common terms for animals such as amphibian or reptile fall somewhere in taxonomy levels?

Where in the "ranks" of taxonomy (domain, kingdom, phylum etc.) do common words used to describe animals such as amphibian and reptile fall?
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1answer
46 views

Wikibooks claim that it is difficult to find two texts that agree on the definition of an animal

In this entry of Wikibooks we find the claim It is surprisingly difficult to find two texts that agree on a precise definition of an animal. Is this true? [I know nothing about biology, but I ...
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1answer
2k views

Bootstrap values

What do the bootstrap values indicate about the relationship between the species? I'm working on Mega program but I don;t understand what bootstrap value means in simple terms and also what does it ...
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2answers
67 views

Who gives a newly discovered microbe its name?

Assuming a hitherto unknown microbe is found - who gives it its name?
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1answer
3k views

Segmentation in Platyhelminthes

My text book says: Platyhelminthes are unsegmented worms. Moreover, tape worm (Taenia solium), which is segmented, is one of the examples of Platyhelminthes. My question is: why a segmented worm ...
5
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1answer
850 views

In the NCBI Taxonomy tree what does “no rank” mean?

NCBI publish their taxonomy browser at https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi While many taxa have a well defined rank (Order, Family, Genus etc..), some of them have "no rank". ...
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109 views

Book for molecular biology comparative to major taxonomic groups

Want recommendation of books on molecular biology (or molecular cell biology), that elaborately compares the structures and phenomena in the major taxonomic groups. For say, whenever studying about ...
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1answer
222 views

Lactobacillales vs LAB (Lactic acid bacteria)

As far as I understand bacteria of order Lactobacillales are all LAB (Lactic acid bacteria). So often "Lactobacillales" and "LAB" are used interchangeably. But I also thought that this is not the ...
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2answers
2k views

Number of families in Animal kingdom

I found this question about how many taxonomic families there are. That made me wonder how many are just in the animal kingdom alone. I want to know about families not species. Now the linked question ...
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1answer
205 views

How does one confirm the discovery of a new species of plant/animal

Hearing from the National Geographic and the news about the discoveries of new species of plants/animals, I was wondering how can a person confirm when they have actually discovered a new species of ...
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22 views

Why are some bird species placed as family Incertae sedis while some families are simply monotypic?

The Bananaquit and Western Spindalis are passerines of Incerta sedis. But species such as the Osprey, Limpkin and Olive Warbler belong to their own, monotypic, family. Why aren't Bananaquit and ...
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1answer
86 views

What does the species name 'fistula' mean?

Cassia fistula is tree with yellow flowers. As a medical student what amazes me is that the word fistula implies other meanings. A fistula, at least in medical science refers to a tract with two ...
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2answers
2k views

How is the concept of species defined in asexual organisms?

In asexual organisms such as bacteria, archea and some fungi, as well as in some plants where asexual reproduction is the only reproductive strategy, how can we be unambiguous in defining if an ...
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2answers
567 views

Why the “cfr.” in 'Cirrhipathes cfr. anguina' and not “cf.”?

Recently I stumbled upon the species name Cirrhipathes anguina. In the literature it is often mentioned as Cirrhipathes cfr. anguina. What does cfr. mean? Does it carry the same meaning as ...
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1answer
728 views

What instances are there in which two species share the same binomial name?

Since binomials are required to be unique only within a kingdom, two species can share the same binomial name if they are in different kingdoms. I know of one instance of this, Orestias elegans: this ...
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1answer
28 views

Am I entitled to the latlong coordinates of all specimens used in a species revision paper?

If someone publishes a species revision with distribution maps but without publishing all the data used in the paper itself - or in an attached or linked-to file - are the authors nevertheless ...