biology

Ichthyofilaroides

Ichthyofilaroides 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 Ichthyofilaroides rather than just read about it. In short: Ichthyofilaroides is a genus of parasitic nematodes, belonging to the family Guyanemidae Petter, 1974. Species of Ichthyofilaroides are parasitic as adults in fish, in the musculature, surface of visceral organs and body cavity.

Key takeaways

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

Reference excerpt

Ichthyofilaroides is a genus of parasitic nematodes, belonging to the family Guyanemidae Petter, 1974. Species of Ichthyofilaroides are parasitic as adults in fish, in the musculature, surface of visceral organs and body cavity. According to the World Register of Marine Species, the genus currently (2021) includes a single species, Ichthyofilaroides novaecaledoniensis (Moravec et Justine, 2009) Moravec & Justine, 2020. This species was originally described in 2009 as Ichthyofilaria novaecaledoniensis, then transferred to the genus Ichthyofilaroides in 2020 to become the type-species of the genus.

The new genus was differentiated from Ichthyofilaria mainly by the presence of the buccal capsule and the number and arrangement of the cephalic papillae. Moravec & Justine (2020) added that "since the buccal capsule has not yet been described in any species of the Guyanemidae, it may be necessary to create a new family for Ichthyofilaroides in the future. Nevertheless, since the male of its type species remains unknown, we provisionally assign Ichthyofilaroides to the family Guyanemidae, subfamily Travassosneminae."

Hosts and localities

Ichthyofilaroides novaecaledoniensis (Moravec et Justine, 2009) Moravec & Justine, 2020 is a parasite of a deep-sea fish, the Lemon ghost flathead Hoplichthys citrinus Gilbert (Hoplichthyidae, Scorpaeniformes), caught off New Caledonia.

References

Illustrations

Worked examples

Example 1 — a first encounter with Ichthyofilaroides

Start with the simplest possible case. Write down what Ichthyofilaroides 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 Ichthyofilaroides 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 Ichthyofilaroides 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 Ichthyofilaroides

In research: Ichthyofilaroides 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 Ichthyofilaroides 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: Ichthyofilaroides is common in secondary-school and first-year university syllabi. It links to neighbouring topics Monotypic nematode genera, Parasites of fish, Parasitic nematodes of fish, so understanding it makes those chapters shorter.
In everyday life: Look for Ichthyofilaroides 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 Ichthyofilaroides in 20 minutes

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

Frequently asked questions

What is Ichthyofilaroides in simple terms?

Why does Ichthyofilaroides 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 Ichthyofilaroides?

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 Ichthyofilaroides.