biology

Haliotis gigantea

Haliotis gigantea 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 Haliotis gigantea rather than just read about it. In short: Haliotis gigantea, common name the giant abalone, is a species of sea snail, a marine gastropod mollusk in the family Haliotidae, the abalone. It is also known as Siebold's abalone, after Philipp Franz von Siebold.

Key takeaways

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

Reference excerpt

Haliotis gigantea, common name the giant abalone, is a species of sea snail, a marine gastropod mollusk in the family Haliotidae, the abalone. It is also known as Siebold's abalone, after Philipp Franz von Siebold.

Description The size of the shell varies between 80 mm and 200 mm. "The very large shell has a rounded-oval, quite convex shape. The distance of the apex measures from the margin between one-ninth and one-tenth the length of the shell. The surface of the shell shows coarse, low, unequal spiral cords and broad wave-like undulations. The typical form of this shell is one of the largest in the genus. It has a rounded-oval outline. The back of the shell is quite convex and highest in the middle. It is solid but not very thick,. The coloration is reddish-brown, radiately streaked more or less with chocolate and green. The spiral cords are low but strong. And there are irregular but very strong wavelike obliquely radiating folds above. The four open perforations are situated in high tubercles upon a strong dorsal angle, below which the left side slopes steeply to the columellar margin. This slope has low spiral cords, waved or festooned below the row of the holes, and it has also an obtuse ridge parallel with that row, not far below it. The spire is very small, quite low. Inside there are shallow spiral sulci and indentations at the positions of the cords and waves of the exterior. The nacre is light colored or silvery, to a high degree iridescent, reflections of emerald green and red predominating. The muscle attachment is smooth, but its posterior and lateral outlines are marked by a rugose line. The columellar plate is wide, its face concave, sloping inward." The copepod Panaietis haliotis Yamaguti, 1936 is ectoparasitic on this species.

Distribution H. gigantea is endemic to the waters off Japan and Korea.

References

Geiger D.L. & Poppe G.T. (2000). A Conchological Iconography: The family Haliotidae. Conchbooks, Hackenheim Germany. 135pp 83pls Geiger D.L. & Owen B. (2012) Abalone: Worldwide Haliotidae. Hackenheim: Conchbooks. viii + 361 pp. page(s): 93

External links

"Haliotis (Haliotis) gigantea". Gastropods.com. Retrieved 16 January 2019.

Illustrations

Worked examples

Example 1 — a first encounter with Haliotis gigantea

Start with the simplest possible case. Write down what Haliotis gigantea 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 Haliotis gigantea 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 Haliotis gigantea 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 Haliotis gigantea

In research: Haliotis gigantea 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 Haliotis gigantea 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: Haliotis gigantea is common in secondary-school and first-year university syllabi. It links to neighbouring topics Abalone, Biota of the Temperate Northern Pacific, Gastropods described in 1791, so understanding it makes those chapters shorter.
In everyday life: Look for Haliotis gigantea 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 Haliotis gigantea in 20 minutes

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

Frequently asked questions

What is Haliotis gigantea in simple terms?

Why does Haliotis gigantea 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 Haliotis gigantea?

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 Haliotis gigantea.