Egg case (Chondrichthyes) (original) (raw)
An egg case or egg capsule, often colloquially called a mermaid's purse, is the casing that surrounds the eggs of oviparous sharks, skates and chimaeras. Egg cases typically contain one embryo, except for big skate and mottled skate egg cases, which contain up to 7 embryos. Oviparity is completely absent in the superorder Squalomorphii.
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| dbo:abstract | An egg case or egg capsule, often colloquially called a mermaid's purse, is the casing that surrounds the eggs of oviparous sharks, skates and chimaeras. Egg cases typically contain one embryo, except for big skate and mottled skate egg cases, which contain up to 7 embryos. Oviparity is completely absent in the superorder Squalomorphii. (en) Les bourses de sirènes, capsules d'œufs, ou oothèque est le nom donné aux œufs à la forme très caractéristique de certains chondrichthyens (les poissons cartilagineux) ovipares. Les espèces concernées sont notamment des petits requins (en particulier les roussettes), les raies et les chimères. Cet œuf est constitué d'une enveloppe rigide en forme de sac (appelée la capsule) et dont les quatre extrémités sont dotées de longs filaments torsadés (servant à accrocher l'œuf sur des algues ou sur d'autres surfaces du fond des mers ou océans). Souvent échouées sur les plages, les bourses de sirènes sont un des éléments qui peuvent constituer la laisse de mer. (fr) Il nome di borsellino della sirena (in inglese mermaid's purse) è il nome dato talvolta alle sacche vuote, trovate arenate sulla battigia, delle uova di alcune specie di squali e razze. La dimensione di queste sacche può variare da 5 centimetri (come nel caso dello Scyliorhinus canicula) a circa 10 (nel caso dello Scyliorhinus stellaris). Sulla parte terminale della sacca sono presenti dei filamenti, solitamente quattro, che servono ad ancorare la sacca agli scogli o, più comunemente nel caso degli squali del genere Scyliorhinus, ai rami di gorgonia. I colori delle sacche variano di specie in specie, da bianco-giallo traslucido a nero. La sacca contiene sempre un solo uovo fertilizzato. La gestazione dei pesci può variare da 6 a 12 mesi, ma può essere anche più lunga se le sacche vengono deposte in acque fredde. (it) Яйцевая капсула, в разговорной речи называемая «руса́лочий кошелёк» или «дьявольский кошелёк», — оболочка, окружающая оплодотворённые яйца некоторых акул, скатов и химер. Один из обычных объектов, выносимых штормами или приливной волной на берег моря. Яйцевые капсулы состоят из коллагеновых нитей. Они довольно лёгкие, поэтому их часто находят на береговой линии, в области самого высокого уровня воды в прилив. Яйцевые капсулы, выброшенные на берег, обычно пустые, то есть молодь уже вылупилась и вышла из капсулы. Кроме этого, яйцевые капсулы часто встречаются в орудиях лова, таких как сети и ловушки, а также на дне моря во время наблюдений с подводных аппаратов. (ru) Bolsas de sereia, ou cápsulas de ovos, são ovos com morfologia muito característica da maioria dos membros da classe Chondrichthyes, ou seja dos peixes cartilagíneos com reprodução ovípara. As espécies que produzem este tipo de ovos são maioritariamente pequenos tubarões (em particular os Scyliorhinidae), as raias e as quimeras (Chimaeriformes). A cápsulas são rígidas, algumas de formato rectangular, semelhantes a pequenas bolsas com 5-10 de comprimento, outras em formato de espiral, com cerca de 10 cm de comprimento. (pt) |
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| rdfs:comment | An egg case or egg capsule, often colloquially called a mermaid's purse, is the casing that surrounds the eggs of oviparous sharks, skates and chimaeras. Egg cases typically contain one embryo, except for big skate and mottled skate egg cases, which contain up to 7 embryos. Oviparity is completely absent in the superorder Squalomorphii. (en) Les bourses de sirènes, capsules d'œufs, ou oothèque est le nom donné aux œufs à la forme très caractéristique de certains chondrichthyens (les poissons cartilagineux) ovipares. Les espèces concernées sont notamment des petits requins (en particulier les roussettes), les raies et les chimères. Cet œuf est constitué d'une enveloppe rigide en forme de sac (appelée la capsule) et dont les quatre extrémités sont dotées de longs filaments torsadés (servant à accrocher l'œuf sur des algues ou sur d'autres surfaces du fond des mers ou océans). Souvent échouées sur les plages, les bourses de sirènes sont un des éléments qui peuvent constituer la laisse de mer. (fr) Яйцевая капсула, в разговорной речи называемая «руса́лочий кошелёк» или «дьявольский кошелёк», — оболочка, окружающая оплодотворённые яйца некоторых акул, скатов и химер. Один из обычных объектов, выносимых штормами или приливной волной на берег моря. Яйцевые капсулы состоят из коллагеновых нитей. Они довольно лёгкие, поэтому их часто находят на береговой линии, в области самого высокого уровня воды в прилив. Яйцевые капсулы, выброшенные на берег, обычно пустые, то есть молодь уже вылупилась и вышла из капсулы. Кроме этого, яйцевые капсулы часто встречаются в орудиях лова, таких как сети и ловушки, а также на дне моря во время наблюдений с подводных аппаратов. (ru) Bolsas de sereia, ou cápsulas de ovos, são ovos com morfologia muito característica da maioria dos membros da classe Chondrichthyes, ou seja dos peixes cartilagíneos com reprodução ovípara. As espécies que produzem este tipo de ovos são maioritariamente pequenos tubarões (em particular os Scyliorhinidae), as raias e as quimeras (Chimaeriformes). A cápsulas são rígidas, algumas de formato rectangular, semelhantes a pequenas bolsas com 5-10 de comprimento, outras em formato de espiral, com cerca de 10 cm de comprimento. (pt) Il nome di borsellino della sirena (in inglese mermaid's purse) è il nome dato talvolta alle sacche vuote, trovate arenate sulla battigia, delle uova di alcune specie di squali e razze. La dimensione di queste sacche può variare da 5 centimetri (come nel caso dello Scyliorhinus canicula) a circa 10 (nel caso dello Scyliorhinus stellaris). Sulla parte terminale della sacca sono presenti dei filamenti, solitamente quattro, che servono ad ancorare la sacca agli scogli o, più comunemente nel caso degli squali del genere Scyliorhinus, ai rami di gorgonia. I colori delle sacche variano di specie in specie, da bianco-giallo traslucido a nero. (it) |
| rdfs:label | Egg case (Chondrichthyes) (en) Borsellino della sirena (it) Bourse de sirène (fr) Bolsa de sereia (pt) Яйцевая капсула хрящевых рыб (ru) |
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