biology

Otala lactea

Otala lactea 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 Otala lactea rather than just read about it. In short: Otala lactea, known as the milk snail or Spanish snail, is a large, edible species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk, in the family Helicidae, the typical snails. Archaeological recovery at the Ancient Roman site of Volubilis, in Morocco, illustrates prehistoric consumption of O. lactea by humans.

Key takeaways

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

Reference excerpt

Otala lactea, known as the milk snail or Spanish snail, is a large, edible species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk, in the family Helicidae, the typical snails. Archaeological recovery at the Ancient Roman site of Volubilis, in Morocco, illustrates prehistoric consumption of O. lactea by humans.

Distribution This species of snail is native to the western Mediterranean Basin in the southern Iberian Peninsula, Morocco, Algeria, Balearic and Canary Islands, Malta and Corsica. It has been introduced to the Azores, Madeira, United States, including Arizona, California, Florida, and Texas, and to Bermuda, Cuba, and southeastern Australia.

Anatomy

This snail creates and uses love darts as part of its courtship behaviour, prior to mating. The shell of the snail plays an important role on its quality of life. This is because the calcium in the snails shell allows for shell regeneration to take place, if the shell was ever to be broken. O. lactea has developed the evolutionary adaptation of estivation to help it deal with harsh conditions such as drought or famine. During this time, O. lactea suppresses its metabolism. This affects many of the body functions. On a cellular level, this conversion from normal to estivation is seen impacting the Na+/K+-ATPase function. The Na+/K+-ATPase activity has been shown to be significantly reduced during estivation. As the Na+/K+-ATPase pump uses quite a lot of ATP, the suppression of this pump plays a key role in the conversion to estivation in the O. lactea.

References

Rossmässler, E. A. (1854-1858). Iconographie der Land- & Süßwasser-Mollusken Europa's, mit vorzüglicher Berücksichtigung kritischer und noch nicht abgebildeter Arten. (1) 3 (1/2) [13-14]: I-VIII + 1–39. pl. 61-70 [≥ Sept. 1854]; (1) 3 (3/4) [15-16]: I-VIII + 41–77. pl. 71-80 [≥ Aug. 1856]; (1) 3 (5/6) [17-18]: I-VIII + 81–140. pl. 81-90 Péchaud, J. (1884). Excursions malacologiques dans le nord de l'Afrique de la Calle a Alger, d'Alger a Tanger. Pallary, P. (1915). Description de quelques mollusques nouveaux du Grand Atlas. Bulletin du Muséum National d'Histoire Naturelle, Zoologie, 21 (1): 21–28. Paris. Pallary, P. (1918). Diagnoses d'une cinquantaine de mollusques terrestres nouveaux du Nord de l'Afrique. Bulletin de la Société d'Histoire Naturelle d'Afrique du Nord, 9 (7): 137–152. Alger Pallary, P. (1919). Hélicidées nouvelles du Maroc. 2e Partie. Journal de Conchyliologie, 64 (2) [1918]: 51–69, pl. 2–3. Paris. Pallary, P. (1920). Descriptions d'une nouvelle cinquantaine de mollusques terrestres nouveaux du Nord-Ouest de l'Afrique. Bulletin de la Société d'Histoire Naturelle d'Afrique du Nord, 11 (2): 18–34. Alger. Pallary, P. (1920). Récoltes malacologiques du capitaine Paul Martel dans la partie septentrionale du Maroc. Journal de Conchyliologie, 65 (1): 1-39, pl. 1–3; 65 (2): 131–160, pl. 4–5. Paris. Pallary, P. (1922). Faune malacologique du Grand Atlas. Journal de Conchyliologie, 66 (2) [1921]: 89–154, pl. 3–5; 66 (3) [1921]: 185–217. Paris. Pallary, P. (1923). Vingt mollusques terrestres nouveaux du Maroc. Bulletin de la Société d'Histoire Naturelle d'Afrique du Nord, 14 (3): 112–118. Alger. Pallary, P. (1924). Note sur quelques mollusques d'un dépôt pléistocène de Colomb-Béchar. Bulletin de la Société d'Histoire naturelle de l'Afrique du Nord. 15 (3): 111–113. Alger Pallary, P. (1926). Compléments à la faune malacologique de la Berbérie. Journal de Conchyliologie, 70 (1): 1-50, pl. 1–8. Paris Pallary, P. (1928). Notice sur seize mollusques nouveaux du Maroc découverts en 1926–1927. Journal de Conchyliologie, 72 (1): 1-24, pl. 1–4. Paris. Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16, 2017 Holyoak, D.T. & Holyoak, G.A. (2017). A revision of the land-snail genera Otala and Eobania (Gastropoda, helicidae) in Morocco and Algeria. Journal of Conchology, 40 (6): 419–490. Londo

External links

Müller, O. F. (1774). Vermium terrestrium et fluviatilium, seu animalium infusorium, Helminthicorum, et testaceorum, non marinorum, succincta historia. vol 2: I-XXXVI, 1-214, 10 unnumbered pages. Havniae et Lipsiae, apud Heineck et Faber, ex officina Molleriana More images: [1] Otala lactea on the UF / IFAS Featured Creatures Web site Images: [2]

Illustrations

Worked examples

Example 1 — a first encounter with Otala lactea

Start with the simplest possible case. Write down what Otala lactea 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 Otala lactea 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 Otala lactea 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 Otala lactea

In research: Otala lactea 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 Otala lactea 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: Otala lactea is common in secondary-school and first-year university syllabi. It links to neighbouring topics Gastropods described in 1774, Helicidae, IUCN Red List least concern species, so understanding it makes those chapters shorter.
In everyday life: Look for Otala lactea 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 Otala lactea in 20 minutes

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

Frequently asked questions

What is Otala lactea in simple terms?

Why does Otala lactea 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 Otala lactea?

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 Otala lactea.