| 词条 | Discurria insessa |
| 释义 |
| image = Discurria insessa.jpg | image_caption = Discurria insessa living on a stipe of the feather boa kelp, in California | regnum = Animalia | phylum = Mollusca | classis = Gastropoda | unranked_superfamilia = clade Patellogastropoda | superfamilia = Lottioidea | familia = Lottiidae | subfamilia = | genus = Discurria | species = D. insessa | binomial = Discurria insessa | binomial_authority = (Hinds, 1842) | synonyms =Lottia insessa }} Discurria insessa, common name the seaweed limpet, is a species of sea snail, a true limpet, a marine gastropod mollusk in the family Lottiidae. DescriptionThe size of the shell varies between 10 mm and 38 mm. {{Expand section|date=March 2016}}DistributionThis marine species occurs from South Alaska to Baja California, Mexico EcologyD. insessa is believed to live only on Egregia menziesii (feather boa kelp). Young limpets seem to orient randomly on the stipe but adults are almost always oriented longitudinally along the stipe. D. insessa feed both on epiphytes and on the Egregia itself. D. insessa spawns mainly in spring and summer. There is high mortality during the winter—the largest individuals are usually not more than 1 year old. Larvae settle preferentially on large, crowded, post-reproductive Egregia and on fronds which already have adults. They grow fastest if they settle on scars made by older limpets. This species runs away quickly if it contacts a seastar such as Pisaster ochraceus.[1]References1. ^Discurria insessa at Walla Walla University
External links
2 : Lottiidae|Gastropods described in 1842 |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。