星虫动物门

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星虫动物门
Sipuncula
化石時期: 寒武纪现代
Sipuncula.jpg
科學分類
界: 动物界 Animalia
亞界: 真後生動物 Eumetazoa
超门: 冠輪動物總門 Lophotrochozoa
門: 星虫动物门 Sipuncula
Rafinesque, 1814

見內文

星虫动物(学名:SipunculaSipunculida)是海洋底栖的對稱無環節动物,分布与生活环境及生活方式与螠类相似。根據不同的分類或估計方式,現時本門物種從144到300种不等。比較知名的物種有:土钉虫方格星虫。 星蟲動物的學名Sipuncula的意思就是「小型的虹管」。 动物界的一个,現時基於分子生物學的研究,可能會放到㻿節動物門之下成為一個「亞門」[1]

分類[编辑]

本門物種在支序生物學的位置過往也問題多多。最初被歸類為環節動物門,儘管這些物種完全沒有環節,bristles and other annelid characters, the phylum Sipuncula was later allied with the Mollusca, mostly on the basis of developmental and larval characters. Currently these two phyla have been included in a larger group, the Lophotrochozoa, that also includes the annelids, the ribbon worms and several other phyla. Phylogenetic analyses based on 79 ribosomal proteins indicated a position of Sipuncula within Annelida.[2] Subsequent analysis of the mitochondrion's DNA has confirmed their close relationship to the Myzostomida and Annelida (including echiurans and pogonophorans).[3] It has also been shown that a rudimentary neural segmentation similar to that of annelids occurs in the early larval stage, even if these traits are absent in the adults.[4]

食用[编辑]

部分种类可食用。以沙虫为原料制作的菜肴,在福建广东广西台湾海南等地沿海均有分布,是著名海鲜之一。海上絲綢之路的起點泉州著名小吃土筍凍即由可口革囊星蟲Phascolosoma esculenta)製成。這道菜亦隨着海上絲綢之路傳往沿途的地方,例如:菲律賓米沙鄢地區,但烹調方法有點不同。在菲律賓,當地人會把星蟲的肉清潔好,再以做檸汁醃魚生的方式把星蟲肉泡在醋和香料內。這道菜是一道尋常漁家菜,但在餐館裡不常見。

參考文獻[编辑]

  1. ^ Struck, T. H.; Paul, C.; Hill, N.; Hartmann, S.; Hösel, C.; Kube, M.; Lieb, B.; Meyer, A.; Tiedemann, R.; Purschke, G. N.; Bleidorn, C. Phylogenomic analyses unravel annelid evolution. Nature. 2011, 471 (7336): 95–98. doi:10.1038/nature09864. PMID 21368831. 
  2. ^ Hausdorf, B.; 等. Spiralian Phylogenomics Supports the Resurrection of Bryozoa Comprising Ectoprocta and Entoprocta. Molecular Biology and Evolution. 2007, 24 (12): 2723–2729. doi:10.1093/molbev/msm214. PMID 17921486. 
  3. ^ Shen, X.; Ma, X.; Ren, J.; Zhao, F. A close phylogenetic relationship between Sipuncula and Annelida evidenced from the complete mitochondrial genome sequence of Phascolosoma esculenta. BMC Genomics. 2009, 10: 136. doi:10.1186/1471-2164-10-136. 
  4. ^ Wanninger, Andreas; Kristof, Alen; Brinkmann, Nora. Sipunculans and segmentation. Communicative and Integrative Biology. Jan–Feb 2009, 2 (1): 56–59. doi:10.4161/cib.2.1.7505. PMC 2649304. PMID 19513266. 

外部連結[编辑]