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- Brachiolaria abstract "A brachiolaria is the second stage of larval development in many sea stars; it follows the bipinnaria. Brachiolaria have bilateral symmetry, unlike the adult sea stars, which have a pentaradial symmetry. Starfish of the order Paxillosida (Astropecten and Asterina) have no brachiolaria stage, with the bipinnaria developing directly into an adult.The brachiolaria develops from the bipinnaria larva when the latter grows three short arms at the underside of its anterior end. These arms each bear sticky cells at the tip, and they surround an adhesive sucker. The larva soon sinks to the bottom, attaching itself to the substrate, firstly with the tips of the arms, and then with the sucker. Once attached, it begins to metamorphose into the adult form.The adult starfish develops only from the hind-part of the larva, away from the sucker. It is from this part that the arms of the adult grow, with the larval arms eventually degenerating and disappearing. The digestive system of the larva also degenerates, and is almost entirely rebuilt. A new mouth forming on the left side of the body, which eventually becomes the lower, or oral, surface of the adult. Similarly, a new anus forms on the right side, which becomes the upper, or aboral, surface.The coelom, or body cavity is divided into three chambers in the larva, two of which form the water vascular system, while the other remains as the adult body cavity. Once the tube feet develop from the water vascular system, the larva frees itself from the bottom. At around the same time, the skeleton begins to develop, initially in a ring around the anus; at this point the larva has developed into an adult, although it will continue to grow for some years before reaching sexual maturity.".
- Brachiolaria thumbnail Asterias_sp_older_brachiolaria_larva_from_below.png?width=300.
- Brachiolaria wikiPageID "1730932".
- Brachiolaria wikiPageLength "2367".
- Brachiolaria wikiPageOutDegree "14".
- Brachiolaria wikiPageRevisionID "594957458".
- Brachiolaria wikiPageWikiLink Asterina_(starfish).
- Brachiolaria wikiPageWikiLink Astropecten.
- Brachiolaria wikiPageWikiLink Bipinnaria.
- Brachiolaria wikiPageWikiLink Category:Echinoderms.
- Brachiolaria wikiPageWikiLink Coelom.
- Brachiolaria wikiPageWikiLink Larva.
- Brachiolaria wikiPageWikiLink Metamorphosis.
- Brachiolaria wikiPageWikiLink Paxillosida.
- Brachiolaria wikiPageWikiLink Sea_star.
- Brachiolaria wikiPageWikiLink Starfish.
- Brachiolaria wikiPageWikiLink Symmetry_(biology).
- Brachiolaria wikiPageWikiLink Symmetry_in_biology.
- Brachiolaria wikiPageWikiLink Tube_feet.
- Brachiolaria wikiPageWikiLink Water_vascular_system.
- Brachiolaria wikiPageWikiLink File:Asterias_sp_older_brachiolaria_larva_from_below.png.
- Brachiolaria wikiPageWikiLinkText "Brachiolaria".
- Brachiolaria wikiPageWikiLinkText "brachiolaria".
- Brachiolaria hasPhotoCollection Brachiolaria.
- Brachiolaria wikiPageUsesTemplate Template:Cite_book.
- Brachiolaria subject Category:Echinoderms.
- Brachiolaria hypernym Stage.
- Brachiolaria type Person.
- Brachiolaria type Organism.
- Brachiolaria type Organism.
- Brachiolaria comment "A brachiolaria is the second stage of larval development in many sea stars; it follows the bipinnaria. Brachiolaria have bilateral symmetry, unlike the adult sea stars, which have a pentaradial symmetry. Starfish of the order Paxillosida (Astropecten and Asterina) have no brachiolaria stage, with the bipinnaria developing directly into an adult.The brachiolaria develops from the bipinnaria larva when the latter grows three short arms at the underside of its anterior end.".
- Brachiolaria label "Brachiolaria".
- Brachiolaria sameAs Brachiolaria.
- Brachiolaria sameAs Brachiolaria.
- Brachiolaria sameAs m.05rt24.
- Brachiolaria sameAs Brachiolaria.
- Brachiolaria sameAs Q896590.
- Brachiolaria sameAs Q896590.
- Brachiolaria wasDerivedFrom Brachiolaria?oldid=594957458.
- Brachiolaria depiction Asterias_sp_older_brachiolaria_larva_from_below.png.
- Brachiolaria isPrimaryTopicOf Brachiolaria.