Limúlidos: Diferenzas entre revisións

Detrás das patas, teñen [[branquias en libro]], que intercambian os gases respiratorios, e son tamén usualmente ocasionalmente para a natación. Como noutros artrópodos, carecen dun verdadeiro [[endosqueleto]], pero o corpo ten certas estruturas internas feitas de placas cartilaxinosas que sosteñen as branquias en libro.<ref>[http://www.researchgate.net/publication/229787084_The_biology_of_cartilage._I._Invertebrate_cartilages_Limulus_gill_cartilage The biology of cartilage. I. Invertebrate cartilages: Limulus gill cartilage]</ref> Os limúlidos normalmente nadan cabeza abaixo, cunha inclinación duns 30° con respecto á horizontal e móvese a uns 10–15&nbsp;cm/s.<ref>{{cite book |author=S. M. Manton |year=1977 |title=The Arthropoda: Habits, Functional Morphology, and Evolution |page=57 |publisher=[[Clarendon Press]] |url=http://books.google.com/books?id=P3IWAQAAIAAJ | isbn = 019857391X | lccn = 77005466 }}</ref><ref>{{cite book | editor = Carl N. Shuster, Robert B. Barlow & H. Jane Brockmann | year = 2003 | url = http://books.google.com/books?id=0OSAKny-6M4C&pg=PA163 | title = The American Horseshoe Crab | pages = 154–188 | chapter = A history of skeletal structure: clues to relationships among species | author = Carl N. Shuster, Jr. & Lyall I. Anderson | publisher = [[Harvard University Press]] | isbn = 978-0-674-01159-5 | lccn = 2003056640 }}</ref><ref>{{cite journal |author=E. D. Vosatka |year=1970 |title=Observations on the swimming, righting, and burrowing movements of young horseshoe crab, ''Limulus polyphemus'' |journal=Ohio Journal of Science |volume=70 |issue=5 |pages=276–283 |url=https://kb.osu.edu/dspace/handle/1811/5558}}</ref> Atópanse normalmente no leito do mar na procura de vermes e [[molusco]]s, que son a súa principal comida, e outros pequenos animais.

 

{{-}}