About Lindaspio polybranchiata

Lindaspio polybranchiata is a species of polychaete worm in the family Spionidae. It is known for its unique multiple branchial filaments, which aid in respiration and feeding. This species is typically found in deep-sea environments, often inhabiting soft sediments where it constructs burrows. Like other spionids, it uses its specialized palps to collect organic particles from the surrounding water and sediment, serving as a deposit feeder. Its adaptations to low-oxygen environments and its role in benthic ecosystems make it an important species for studying deep-sea biodiversity and ecological processes.

Classification

Animalia (Kingdom); Annelida (Phylum); Polychaeta (Class); Sedentaria (Subclass); Canalipalpata (Infraclass); Spionida (Order); Spioniformia (Suborder); Spionidae (Family); Lindaspio (Genus); Lindaspio polybranchiata (Species)

Original Name

Lindaspio polybranchiata Sui, Dong, Wu & Li, 2023

Key Reference Paper

1. Sui J, Dong D, Wu X, et al.  A new species of the genus Lindaspio Blake & Maciolek, 1992 (Annelida, Spionidae) from a cold seep near Hainan Island, China[J]. ZooKeys, 2023, 1153: 105. (Sui et al., 2023)

Description

Total length 55 mm, maximum width 4 mm, including chaetae. More than 350 crowded chaetigers. Color pale in alcohol. Prostomium incised, developed into two frontal lobes or weak horns; caruncle present or absent; occipital tentacle absent. Peristomial wings absent. Notopodia of chaetigers 2–4 with fascicles of heavy spines. Anterior neuropodial spines present. Dorsal branchiae starting from chaetiger 2; ventral branchiae starting from an anterior segment, branchiae closely associated with parapodial lamellae, continuing to posterior end. Chaetiger 1 reduced, with notopodia reduced to single lamellae lacking notochaetae. Following notopodia and neuropodia with capillaries and hooded hooks. Pygidium simple, conical, lacking cirri.

Etymology

The species is so named because it has more neuropodial branchiae than the congeners.

Distribution

Lingshui cold seep cruise, Faxian Dive 252, 1758 m, 17°37'N, 111°03'E, coll. crew of R/V Kexue


Basic Information
SpeciesPhylumCommon NameEcosystemDepthHabitatNCBI Taxonomy ID
Lindaspio polybranchiataAnnelida-Cold seep1,700Lingshui Cold Seep3032291

Genome Assembly Information
Genome AssemblyGenome SizeAssembly levelReleased yearWGS accessionSubmitterBioProjectBUSCO completeness (%)Scaffold/Contig N50 (kb)GC content (%)Repeat Rate (%)Gene Number
-1.66GbContig2025--PRJNA118820790.10 ---27,746

References
TitleJournalPubmed ID
Degenerated vision, altered lipid metabolism, and expanded chemoreceptor repertoires enable Lindaspio polybranchiata to thrive in deep-sea cold seepsBMC Biology39806408

Results of comparison between Lindaspio polybranchiata and its nearshore relatives from the paper (Yan et al., 2025)

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Annotation IDDescriptionTypeSubtypeGeneRatioEvolution TypeP-valueQ-value
GO:0010869regulation of receptor biosynthetic processGOBiological Process4expanded0.006621810.028794254
GO:0017148negative regulation of translationGOBiological Process13expanded0.006823640.029593371
GO:0007031peroxisome organizationGOBiological Process8expanded0.0068353450.029593371
GO:1902807negative regulation of cell cycle G1/S phase transitionGOBiological Process8expanded0.0068353450.029593371
GO:0017053transcriptional repressor complexGOCellular Component8expanded0.006843140.036397569
GO:0016885ligase activity, forming carbon-carbon bondsGOMolecular Function3expanded0.0069043680.022978601
GO:0001835blastocyst hatchingGOBiological Process2expanded0.0070431040.030404599
GO:0031860telomeric 3' overhang formationGOBiological Process2expanded0.0070431040.030404599
GO:0045168cell-cell signaling involved in cell fate commitmentGOBiological Process5expanded0.0070758370.030443154
GO:0048067cuticle pigmentationGOBiological Process5expanded0.0070758370.030443154
GO:0055114oxidation-reduction processGOBiological Process42expanded0.0070927450.030443154
GO:0051251positive regulation of lymphocyte activationGOBiological Process10expanded0.0070928570.030443154
GO:0005509calcium ion bindingGOMolecular Function17expanded0.0075166570.024822448
GO:0005996monosaccharide metabolic processGOBiological Process18expanded0.0075914070.032536161
GO:0000791euchromatinGOCellular Component7expanded0.0076206740.039954104
GO:0051602response to electrical stimulusGOBiological Process6expanded0.0077474360.033157249
GO:0002443leukocyte mediated immunityGOBiological Process28expanded0.0077618730.033171441
GO:0046689response to mercury ionGOBiological Process4expanded0.0077980510.033278378
GO:0046889positive regulation of lipid biosynthetic processGOBiological Process8expanded0.0079139970.033724932
GO:0035206regulation of hemocyte proliferationGOBiological Process5expanded0.0079862040.033743408
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