biology

Haliotis corrugata

Haliotis corrugata 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 corrugata rather than just read about it. In short: The pink abalone, scientific name Haliotis corrugata, is a species of large edible sea snail, a marine gastropod mollusk in the family Haliotidae, the abalone. Subspecies H. c. corrugata W.

Key takeaways

Haliotis corrugata 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 corrugata to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Haliotis corrugata from memory before moving on to harder problems.

Reference excerpt

The pink abalone, scientific name Haliotis corrugata, is a species of large edible sea snail, a marine gastropod mollusk in the family Haliotidae, the abalone.

Subspecies H. c. corrugata W. Wood, 1828 (synonyms: Haliotis diegoensis Orcutt, 1900; Haliotis nodosa Philippi, 1845) H. c. oweni Talmadge, 1966 - synonym: Haliotis oweni Talmadge, 1966

Distribution Pink abalone can be found along the Pacific coast of North America from Point Conception, California to Bahia de Santa Maria, Baja California Sur, Mexico.

Description The shell is thick and characterized by strong corrugations and is more circular than other American abalone. The two to four open respiratory apertures have edges that are strongly elevated above the surface of the shell. These holes collectively make up the selenizone, which forms as the shell grows. The epipodium is a "ruffle" of tissue along the side of the foot. The head and epipodial tentacles are black, but the epipodial fringes are a mottled black and white, with many tubercles on the surface and a lacy edge. "The large shell is subcircular or short, oval, very convex, like a halfglobe. The surface is corrugated all over with nodose wrinkles. The three open perforations are elevated and tubular. The inner surface is dark, very brilliantly iridescent. The roughened muscle scar is distinct. The outline is more rounded than usual, being a very short oval. The back is very convex. The strong epidermis is dull, olive-brown with usually wide oblique greenish intervals. The sculpture begins as crowded spiral cords or lirae, but over the greater part of the body whorl these become nodose at short intervals, or are crossed by obliquely radiating corrugations. It is angled at the row of the holes. Below these there is a distinct spiral channel or furrow, bounded below by a more or less distinct row of nodules. And between this and the columellar margin it is obliquely corrugated. The folds scalloping the lower part of the columellar margin. The spire does not project above the general outline of the shell. The inner surface is dark, iridescent, with red predominating in the coloration. The muscle impression is large, distinct, roughened all over, and like fine mosaic work in its brilliant coloration. The flat or concave columellar plate slopes strongly inward, and is not at all truncate at the base. Above it, it almost conceals the small cavity of the spire. The large tubular perforations number sometimes two, but normally three."

Ecology

Habitat This species occupies sheltered waters at depths between 20 and 118 feet (6 – 36 m). They are herbivores, feeding on kelp and drifting algae.

Life cycle Pink abalone have separate sexes and broadcast spawn from March to November. Maturity is reached at about 1.4 in (35 mm) length or three to four years. Lifespan is 70 years or more.

Predators Predators of this species other than mankind are sea otters, sea stars, large fish, and octopus.

Diseases Pink abalone are subject to a chronic, progressive and lethal disease: the Withering Syndrome or abalone wasting disease, leading to mass mortality.

Threats and conservation Pink abalone are threatened by historic overharvesting, illegal harvest, withering abalone syndrome disease, and climate change. In 1996, the California Department of Fish and Game closed the commercial and recreational abalone fisheries in California, but populations continued to decline. California has a Abalone Recovery Management Plan to guide conservation efforts. The pink abalone is a US National Marine Fisheries Service Species of Concern. Species of Concern are those species about which the National Oceanic and Atmospheric Administration, National Marine Fisheries Service has some concerns regarding status and threats, but for which insufficient information is available to indicate a need to list the species under the US Endangered Species Act. Information regarding the status of pink abalone in Mexico is scant. A commercial fishery for pink abalone is still in place in Mexico and is managed by local cooperatives.

References

Geiger D.L. & Owen B. (2012) Abalone: Worldwide Haliotidae. Hackenheim: Conchbooks. viii + 361 pp. [29 February 2012] page(s): 77

External links Gastropods.com Withering Syndrome in Black Abalone

Illustrations

Worked examples

Example 1 — a first encounter with Haliotis corrugata

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

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

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

Frequently asked questions

What is Haliotis corrugata in simple terms?

The pink abalone, scientific name Haliotis corrugata, is a species of large edible sea snail, a marine gastropod mollusk in the family Haliotidae, the abalone. Subspecies H. c. corrugata W.

Why does Haliotis corrugata 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 corrugata?

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 corrugata.