Главная 7 Aquarium fish 7 Features and lifestyle of sea lilies

Features and lifestyle of sea lilies

Crinoids from ancient Greek are translated as “similar to lilies.” These inhabitants of the ocean are otherwise called sea lilies. In shape, they resemble a flower and are unique in their bright color.

Crinoids are not plants, but animals that perfectly exist with corals and algae. Attaching to rocks and reefs, they can also live in water bodies, being their original decoration.

The most important thing is to maintain the desired salinity of the water.

Crinoids belong to the class of echinoderms (type of marine animals)

Habitat for common lilies is the ocean. Possessing external splendor, these aquatic inhabitants feed on all living things – plankton, small crustaceans.

Like sea urchins and stars, they belong to the class of echinoderms. For all their types is typical:

  1. The structure in the form of a five-beam symmetry of the body.
  2. Ability to live at any depth.
  3. The body has a cup with rays radiating from it. With the help of the calyx, the animal attaches to any surface, and the rays filter everything living in water and put it in the mouth, which is located in the center of the calyx. Also with the help of smooth movements the animal moves in the water. In total, the crinoid has five rays up to 1 meter long. Scions can depart from them. The rays have a skeleton and well developed muscles, which helps them to be flexible and mobile.

Crinoids have the ability to quickly restore broken rays.

  • A common occurrence in crinoids is the breaking of rays. This is influenced by adverse factors: lack of oxygen, the attack of enemies, a sharp decrease in temperature. After some time, these rays are easily and quickly restored.
  • Appearance is no different from the ancestors.
  • They move in various ways: they swim with the help of rays, crawl along the bottom of the ocean, or walk on legs-cirros.
  • They are found both in countries with a tropical climate and in the cold Antarctic.
  • If you liked the video – share with friends:

    Appearing 488 million years ago, the crinoids settled the ocean. The Paleozoic period is considered their golden age.

    At that time there were about 5,000 species of sea lilies, many of which have not survived to this day. Only species that appeared on the planet 250 million years ago have survived to this day. The crinoids have enemies.

    Predatory mollusks love to feast on the soft flesh of the calyx, drilling it with proboscis. Small crustaceans also cause damage to crinoids by settling in the circus or in the digestive system. There are 2 classes of sea lilies:

    • stalked (they have a stalk, with its help they are attached to a substrate, they rarely move, they can be in one place all their life, they live at any depth);
    • stemless (without a stem, due to which they are more mobile, are constantly in motion, but can live only at a depth of 200 meters).

    Thus, the lifestyle of cochlea can be both active and passive.

    In our time, there are approximately 700 types of crinoids. All of them lead a sedentary lifestyle at different depths and periodically move.

    Food is carried out at night, and in the daytime the crinoids are masked in reefs and under rocks.

    The crinoids feed on algae, the larvae of small crayfish, mollusks, thus being a kind of filter feeder.

    With their rays, these animals catch small animals in the water. The grooves on the inner side of the rays have glandular cells from which mucus is secreted.

    Everything caught from the water is enveloped in mucus and turns into lumps of food.. How much food will a sea lily catch and consume per day, depends on its size and length of the rays.

    Crinoids septum. Breeding features of sea lilies are that males produce sperm and females produce eggs for fertilization. The eggs released by the female are fertilized right in the water.

    Then they turn into a barrel-shaped larva. New individuals appear within 2-3 days.

    Sit on the ground, they are fixed in it, grow, lengthen and change. Over time, they appear calyx, oral cavity and stalk.

    Sea lilies in 2-3 days are able to produce new offspring

    The stalked and stemless members of the class develop in different ways. In a stemless calyx, after a month and a half, it breaks off the stem and swims to conquer oceanic expanses.

    In stalked representatives, the stem eventually stretches in length and overgrown with cirres.

    If you liked the video – share with friends:

    О admin


    Check Also

    Botia dario (Botia dario) – description, content, breeding

    Botia Dario (Botia dario) HAMILTON, 1822. Botsiya Dario – a very bright and beautiful fish ...

    Coliseum striped (Colisa fasciata) – content, breeding

    Coliseum striped (Colisa fasciata) The coliza of the Belontev family is striped with a variety ...

    Speckled otozinclus (Otocinclus flexilis) – content, breeding

    Ototsinkly Mottled (Otocinclus flexilis) Habitat: Ototsinkly speckled inhabits both rapid and calm rivers with dense ...

    Tetra Kerry (Inpaichthys kerri) – content, breeding

    Kerry or False Royal Tetra (Inpaichthys kerri) Gery Junk, 1977 Other names: Tetra Kerry, Violet ...

    Dario dario (Dario dario) – description, content, breeding

    Dario Dario (Dario dario / Scarlet Badis) Hamilton, 1822 Other names: Badis Scarlet, Badis Red, ...

    Botsiya dwarf (Yunnanilus cruciatus) – content, breeding

    Botsiya dwarf striped (Yunnanilus cruciatus) Striped was first described in 1944. Names are synonyms: Yunnanilus ...

    Adolf’s Corridor (Corydoras adolfoi) – content, breeding

    Adolphus Corridor (Corydoras adolfoi) Burgess, 1982 Adolf’s Corridor is a very elegant catfish, described only ...

    Popondetta furcata (Pseudomugil furcatus) – content, breeding

    Popondetta blue-eyed or Popondetta furcata (Pseudomugil furcatus) Popondetta furcata of the melanoteny family lives in ...

    Tetra Kitty (Hyphessobrycon heliacus) – content, breeding

    Tetra Kitty (Hyphessobrycon heliacus) described by ichthyologists in 2002. Tetra Kitty, Hifessobrikon Heliacus, Tetra Heliacus ...

    Koridoras Rabauti (Corydoras rabauti) – content, breeding

    Rabidy Corridor (Corydoras rabauti) Rabauti Corridor is a very active, friendly and curious fish that ...

    Marble Botion (Botia lohachata) – content, breeding

    Botsiya marble (Botia lohachata) It became known to aquarists in 1912, and only got to ...

    Koridoras similis (Corydoras similis) – content, breeding

    Koridoras similis (Corydoras similis) Habitat: The Similis Corridor is found in nature in the Madeira ...

    Pseudomugil Gertrude (Pseudomugil gertrudae) – content, breeding

    Blue-eyed spotted Gertrude (Pseudomugil gertrudae) WEBER 1911 Detachment: Atheriform (Atheriniformes).Family: Iris (Melanotaeniidae). Genus: Pseudomugil (Pseudomugilidae). ...

    Tetra Congo (Phenacogrammus interruptus) – content, breeding

    Congo tetra (Phenacogrammus interruptus) Boulenger, 1899 Congo tetra – this is amazingly beautiful, active, peaceful, ...

    Koridoras pygmy (Corydoras pygmaeus) – content, breeding

    Pygmy Corridor (Corydoras pygmaeus) Knaack, 1966 Corridor Pygmy is a miniature fish with an elegant ...

    Bull-calf Bee (Brachygobius doriae) – content, breeding

    Goby Bee or Bumblebee (Brachygobius doriae) Gunter, 1868. The bumblebee goby or bee is a ...

    Sterba Corridor (Corydoras sterbai) – content, breeding

    Sterba Corridor (Corydoras sterbai) – very bright and popular catfish aquarists. Known since 1962. Habitat: ...

    Pterigoplicht brocade (Glyptoperichthys gibbiceps) – description, content

    Pterigoplicht brocade (Glyptoperichthys gibbiceps) – The brocade leopard catfish was first described by Kner in ...

    Tetra Krasnonosay (Hemigrammus bleheri) – content, breeding

    In the late 70s – early 80s, a heated controversy flared up on the pages ...

    Venezuelan Corridor (Corydoras venezuelanus) – content, breeding

    Corridor inVenezuelan (Corydoras venezuelanus) Family – Callicht (Callichthyidae).Subfamily – Carapace – (Corydoradinae). Origin: South America ...

    Girinoheylus (Gyrinocheilus aymonieri) – content, breeding

    Girinoheylus (Gyrinocheilus aymonieri) – called yet Chinese Seaweed Habitat: inhabits mountain streams in China, Thailand, ...

    Corridors (Corydoras) – types, description, content, breeding

    Corridors (Corydoras) – kind of aquarium catfish. Family: Calligthy catfishes (Callichthyidae). Inhabit Central America, the ...

    Iridescent Boesman (Melanotaenia boesemani) – content, breeding

    Boosman’s iris (Melanotaenia boesemani) – relatively recently appeared in the decorative aquarism, but has already ...

    Tetra Firefly (Hemigrammus erythrozonus) – content, breeding

    Erythrosonus (Hemigrammus erythrozonus), bearing the name Tetra Svetlyachok, from the family of haracin. First came ...