biology

LarvalBase

LarvalBase 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 LarvalBase rather than just read about it. In short: LarvalBase is a global online database of information about fish eggs, larvae and fry. It includes detailed data on the identification of very young fish and the rearing of fish species important for fisheries and aquaculture.

Key takeaways

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

Reference excerpt

LarvalBase is a global online database of information about fish eggs, larvae and fry. It includes detailed data on the identification of very young fish and the rearing of fish species important for fisheries and aquaculture. As of July 2011, it included descriptions of 2,228 species, 4,229 pictures, and references to 4,513 works in the scientific literature. The database is under the supervision of Bernd Ueberschaer at the Leibniz Institute of Marine Sciences in Kiel, Germany. LarvalBase is an offshoot of, and follows the same format as FishBase, a comprehensive online database about finfish. Whereas FishBase is a database about adult finfish, LarvalBase is a database about the juvenile stages of fish. Juvenile fish often feed differently and occupy different habitats than the adults do. LarvalBase complements FishBase by providing information about these early stages of life. LarvalBase aims to include all the key data on finfish larvae, with an emphasis on standardising the data, making it easy to extract and combine data with other data, and offering powerful presentation tools. It draws on the traditional primary sources found in papers, books and reports, gray literature and unpublished but reliable data from sources such as practicing aquaculturists. The data includes information such as identification keys, morphometrics, broodstock, spawning and nursery behaviour, prey and predators, and growth stages and rates. It also includes information of specific interest to aquaculturists, such as how long it takes egg to hatch, diagrams charting changes in anatomy at different larval stages, analysis of larval diets, and techniques for rearing fish fry.

Background It can be difficult for fisheries, aquaculture and hatchery scientists and managers to get the information they need on the species that concern them, because the relevant facts can be scattered and buried across numerous journal articles, reports, newsletters and other sources. It can be particularly difficult for people in developing countries who need such information. An answer to this situation is to consolidate all the available information, drawn from the global sources, into an easily accessed database. The database will be particularly useful if the data has also been standardised and validated. It was with such considerations that the FishBase project was born in 1988. FishBase is now the world's main database on finfish with over 30 million hits a month. However, FishBase does not include detailed information on fish eggs and juvenile fish. In 1998 the LarvalBase project was launched to remedy this.

See also List of online encyclopedias SeaLifeBase

Notes

References LarvalBase . Presentation at conference, "Aqualex, A Multilingual Glossary In Support Of Multimedia And Online Products And Programmes Related To Fisheries And Aquaculture", May 10–12, 2001, Agriculture University of Szczecin, Poland. Biological Information Systems IFM-GEOMAR, Retrieved 28 July 2011. Ueberschär, Bernd (2000) LarvalBase: base and knowledge gaps. ACP-EU Fisheries Research Report, 9: 78.

External links LarvalBase online Photo archive LarvalBase. Critical times for fish larvae Archived 4 March 2016 at the Wayback Machine Bernd Ueberschär, IFM-GEOMAR. Presentation to Summer school, Qingdao, 2008. Introductory lecture on larval ecology.

Worked examples

Example 1 — a first encounter with LarvalBase

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

In research: LarvalBase 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 LarvalBase 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: LarvalBase is common in secondary-school and first-year university syllabi. It links to neighbouring topics Biology websites, Fish reproduction, Fisheries databases, so understanding it makes those chapters shorter.
In everyday life: Look for LarvalBase 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 LarvalBase in 20 minutes

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

Frequently asked questions

What is LarvalBase in simple terms?

Why does LarvalBase 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 LarvalBase?

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 LarvalBase.