biology

Riemerella anatipestifer

Riemerella anatipestifer is a biology 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 Riemerella anatipestifer rather than just read about it. In short: Riemerella anatipestifer is a member of the Flavobacteriaceae family. It is a Gram-negative bacterium that causes septicaemia and death in young ducks and geese throughout the world.

Key takeaways

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

Reference excerpt

Riemerella anatipestifer is a member of the Flavobacteriaceae family. It is a Gram-negative bacterium that causes septicaemia and death in young ducks and geese throughout the world. There are 21 known serotypes and infection is spread horizontally between birds. Infection may be referred to as duck septicaemia, goose flu, riemerellosis, new duck disease and polyserositis.

Clinical signs and diagnosis Clinical signs are most commonly seen in birds between the ages of 1–8 weeks old. Systemic infection is most common, producing a variety of clinical signs. These include diarrhoea, pyrexia, anorexia, stunted growth, respiratory signs (e.g. coughing), neurological abnormalities (e.g. convulsions), and ocular signs. These signs are rapidly followed by death in many birds. Infection may localise in chronic cases. On post-mortem, a yellow-white exudate and congestion can be seen throughout the body. The signs seen on clinical exam and postmortem are normally sufficient to make a presumptive diagnosis. This diagnosis can be confirmed using laboratory tests such as bacterial culture, PCR and ELISA.

Treatment and control Antibiotics are the treatment of choice. The type of antibiotic selected should be determined by licensing and sensitivity testing. Both a live and inactivated vaccines are available to control the disease. Good husbandry is also an essential part of disease prevention.

References

Riemerella anatipestifer, reviewed and published by Wikivet at http://en.wikivet.net/Riemerella_anatipestifer, accessed 19/09/2011.

External links Type strain of Riemerella anatipestifer at BacDive - the Bacterial Diversity Metadatabase

Worked examples

Example 1 — a first encounter with Riemerella anatipestifer

Start with the simplest possible case. Write down what Riemerella anatipestifer claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, 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 Riemerella anatipestifer 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 Riemerella anatipestifer 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 Riemerella anatipestifer

In research: Riemerella anatipestifer appears in biology 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 Riemerella anatipestifer 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: Riemerella anatipestifer is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bacteria described in 1932, Bacterial diseases, Poultry diseases, so understanding it makes those chapters shorter.
In everyday life: Look for Riemerella anatipestifer 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 Riemerella anatipestifer in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Riemerella anatipestifer 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 Riemerella anatipestifer out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Riemerella anatipestifer in simple terms?

Riemerella anatipestifer is a member of the Flavobacteriaceae family. It is a Gram-negative bacterium that causes septicaemia and death in young ducks and geese throughout the world.

Why does Riemerella anatipestifer matter?

Because it connects several biology 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 Riemerella anatipestifer?

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 Riemerella anatipestifer.