Common Shiny Woodlouse
探検Animal
Common Shiny Woodlouse
oniscus asellus
The Common Shiny Woodlouse (Oniscus asellus) is a remarkably adaptable and widespread terrestrial crustacean. Far from being an insect, this fascinating little creature belongs to the subphylum Crustacea, making it more closely related to ocean-dwelling crabs and lobsters than to beetles or ants. It has adapted exceptionally well to life on land, finding its niche as a vital decomposer in both wild and human-altered environments. By voraciously consuming dead plant material, it plays a crucial role in nutrient cycling, breaking down organic matter and returning essential elements to the soil. Often overlooked as simple garden pests, these woodlice are actually harmless and highly beneficial scavengers. They are incredibly common across Europe and have been introduced to the Americas, where they thrive in moist, dark microhabitats. Observing a Common Shiny Woodlouse provides a direct window into the hidden, microscopic ecosystems of the forest floor and backyard compost heaps, highlighting nature's incredible ability to clean and renew itself.
生息地: Typically found in moist, shaded environments such as under rotting logs, stones, leaf litter, and compost heaps in woodlands, gardens, and urban spaces.
外見
The Common Shiny Woodlouse is relatively large and flat, reaching up to 16 millimeters in length. As its name suggests, it is characterized by a glossy, shiny dorsal exoskeleton that typically ranges from dark grey to brown. The shell is often decorated with distinct paler, yellowish mottling, and the edges of its segmented armor form a continuous, light-colored "skirt" around its body. Unlike pillbugs, Oniscus asellus cannot roll itself into a tight defensive ball; instead, it relies on staying flat and clamping down against surfaces. Its head features moderately long, sharply angled antennae with three flagellar segments at the tip, which helps distinguish it from similar species.
界Animalia門Arthropoda綱Malacostraca目Isopoda科Oniscidae属Oniscus
カテゴリ
Animalレア度
Common
危険度
1/5 · 非常に低い
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おもしろい事実
Because they breathe using modified, gill-like structures called pleopodal lungs, they must live in damp environments to prevent these 'gills' from drying out.
Unlike the familiar pillbug, the Common Shiny Woodlouse cannot roll up into a ball; if threatened, its main defense is to clamp down incredibly tight against a flat surface.
Woodlice are terrestrial crustaceans, meaning they are more closely related to crabs, shrimp, and lobsters than to insects or centipedes.
Woodlice have copper-based blood utilizing hemocyanin rather than iron-based hemoglobin, which makes their blood appear pale blue when oxygenated.
特殊能力
能力
Ammonia Gas Excretion
Instead of urinating liquid waste, woodlice conserve water by excreting their nitrogenous waste as ammonia gas directly through their exoskeleton.
能力
Heavy Metal Tolerance
They can accumulate and tolerate high levels of heavy metals like copper and zinc in their hepatopancreas, allowing them to survive in heavily polluted environments.
能力
Brood Pouch Rearing
Females develop a fluid-filled marsupium (brood pouch) on their underside where they carry and protect their eggs and newly hatched young until they are ready to emerge.
サイズと詳細
- 長さ
- 1 cm
- 体重
- 0.00005-0.00015 kg
- 寿命
- 2-4 年
- 一度の産卵数
- 20-60
- 抱卵期間
- 30-45 日
食性と食事
They primarily consume dead and decaying plant matter, playing a critical role in nutrient cycling and soil health.
年齢による違い: Newly hatched young, called mancas, consume the same decaying matter but often eat their mother's feces to establish the necessary gut microbiome to digest woody material.
主な食物
- Decaying leaves
- Rotting wood
- Fungi
- Fallen fruit
採餌方法
- Foraging
生態系とのつながり
eaten by
Woodlouse Spider
Dysdera crocata
Preyed upon specifically by specialized spiders with large fangs designed to pierce their tough exoskeleton.
eaten by
Common Toad
Bufo bufo
Consumed by small amphibians foraging in the leaf litter during the night.
eaten by
Common Shrew
Sorex araneus
Eaten by small, highly active insectivorous mammals scurrying across the forest floor.
特徴
このオブジェクトにはまだ特徴バッジが割り当てられていません。
別名
まだ別名はありません。
コレクション
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安全性
危険度
1/5 · 非常に低い
まだ特別な安全上の注意はありません。
よくある質問
Common Shiny Woodlouseを見分けるには？
Common Shiny Woodlouseを識別する最も簡単な方法は、Snappit自然識別アプリを使用することです。
Common Shiny Woodlouseの長さは何ですか？
1 cm
Common Shiny Woodlouseの体重は何ですか？
0.00005-0.00015 kg
Common Shiny Woodlouseの寿命は何ですか？
2-4 年
Common Shiny Woodlouseは何を食べますか？
They primarily consume dead and decaying plant matter, playing a critical role in nutrient cycling and soil health.
Common Shiny Woodlouseは通常どこに生息していますか？
Typically found in moist, shaded environments such as under rotting logs, stones, leaf litter, and compost heaps in woodlands, gardens, and urban spaces.
Common Shiny Woodlouseはどのように狩りをしますか？
Foraging
Common Shiny Woodlouseの一度の産卵数は何ですか？
20-60
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