earth science

Meretrix lamarckii

Meretrix lamarckii is a earth 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 Meretrix lamarckii rather than just read about it. In short: Meretrix lamarckii, also called Korean clam or Korean hard clam, is a species of saltwater bivalve in the family Veneridae. It is the second species of venerid clam where doubly uniparental inheritance (DUI) has been identified.

Key takeaways

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

Reference excerpt

Meretrix lamarckii, also called Korean clam or Korean hard clam, is a species of saltwater bivalve in the family Veneridae. It is the second species of venerid clam where doubly uniparental inheritance (DUI) has been identified.

Genomics A chromosome-level genome assembly of Meretrix lamarckii was published in 2026, providing the first reference genome for the species. The genome is approximately 890.5 Mb in size and comprises 19 pseudo-chromosomes. The assembly has a BUSCO completeness of 99.5% and contains 33,346 predicted protein-coding genes.

Ecology It is a medium-sized clam which lives in sandy sediments from the subtidal zone to a depth of 20 meters. In the waters off Hyūga, Miyazaki, it spawns between late July and early September.

Relationship to humans M. lamarckii is edible and economically important in China; commercial fishing has greatly disrupted the habitat where it lives. It is a filter feeder which primarily feeds on phytoplankton. Its shell is used to make the white stones used in Go.

References

Further reading Feng, Jiantong; Fu, Zeqin; Guo, Yahong; Li, Jiji; Guo, Baoying; Lü, Zhenming; Ye, Yingying (2020). "Strong genetic differentiation of the clam Meretrix lamarckii in the China Sea revealed by mitochondrial DNA marker". Molecular Biology Reports. 47 (1): 693–702. doi:10.1007/s11033-019-05177-9. ISSN 0301-4851. PMID 31701474. S2CID 207941192. Shigeno, Kunihiko (1955). "Notes on the Biology of the Clam Meretrix lamarckii". Bulletin of the Japanese Society of Scientific Fisheries. 21 (4): 218–225. doi:10.2331/suisan.21.218.

Illustrations

Worked examples

Example 1 — a first encounter with Meretrix lamarckii

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

In research: Meretrix lamarckii appears in earth 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 Meretrix lamarckii 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: Meretrix lamarckii is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bivalves described in 1853, Molluscs of the Pacific Ocean, Veneridae stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Meretrix lamarckii 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 Meretrix lamarckii in 20 minutes

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

Frequently asked questions

What is Meretrix lamarckii in simple terms?

Why does Meretrix lamarckii matter?

Because it connects several earth 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 Meretrix lamarckii?

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 Meretrix lamarckii.