science

Thorselliaceae

Thorselliaceae is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Thorselliaceae rather than just read about it. In short: Thorselliaceae is a family of bacteria belonging to the class Gammaproteobacteria and it was first described in February 2015. It is not assigned to an order.

Key takeaways

Thorselliaceae belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Thorselliaceae to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Thorselliaceae from memory before moving on to harder problems.

Reference excerpt

Thorselliaceae is a family of bacteria belonging to the class Gammaproteobacteria and it was first described in February 2015. It is not assigned to an order. The family consists of four species in two genera. The bacteria are Gram-negative and rod shaped, approximately 1 μm wide and 2 μm long. They are facultative anaerobes and motile. Thorselliaceae bacteria have been found around the world associated with vector mosquitoes, mainly with vectors of malaria. The first described species was Thorsellia anophelis. It was isolated from the midgut of the malaria mosquito Anopheles arabiensis from Kenya. This new bacterium was given its name after the Swedish researcher Walborg Thorsell who worked with mosquitoes and insecticides against mosquitoes for many years. Thorsellia bacteria have now been found in mosquito species that are the major vectors of malaria in Africa, Asia and South America. The bacteria have also been found in the waters where the malaria mosquitoes breed. Some properties of Thorsellia suggest that they are adapted to the mosquito guts, they can accept an alkaline pH, which is found in mosquito larvae and they grow faster in blood culture. However, T. anophelis has also been found in the reproductive tissues of male and female Anopheles gambiae and An. coluzzii mosquitoes. Currently, little is known about Thorselliaceae in nature apart from that it has been shown in several studies that Thorsellia anophelis dominate the malaria mosquito gut flora and their breeding waters. Thorsellia has besides in Anopheles also been found to dominate the gut flora in the mosquito species Culex tarsalis, which is a vector of among other things, West Nile virus and encephalitis. It as also been shown that T. anophelis is much more abundant in Cx. nigripalpus than in Cx. coronator. Coetzeea (named after the South African mosquito researcher Maureen Coetzee) has so far only been found in Brazilian Anopheles darlingi.

Application A possible application of Thorselliaceae is in paratransgenesis to prevent the transmission of malaria. This would involve genetically transforming the bacteria with genes that produce effector molecules against malaria parasites inside the malaria mosquito gut. Thorselliaceae can be grown in the laboratory under normal conditions and are related to the bacterium Escherichia coli which suggests that the molecular techniques needed could be similar to those available for E. coli.

References

Illustrations

Worked examples

Example 1 — a first encounter with Thorselliaceae

Start with the simplest possible case. Write down what Thorselliaceae claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Thorselliaceae before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Thorselliaceae ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Thorselliaceae

In research: Thorselliaceae appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Thorselliaceae in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Thorselliaceae is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bacteria families, Enigmatic bacteria taxa, Gammaproteobacteria, so understanding it makes those chapters shorter.
In everyday life: Look for Thorselliaceae outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Thorselliaceae in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Thorselliaceae means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Thorselliaceae out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Thorselliaceae in simple terms?

Thorselliaceae is a family of bacteria belonging to the class Gammaproteobacteria and it was first described in February 2015. It is not assigned to an order.

Why does Thorselliaceae matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Thorselliaceae?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Thorselliaceae.