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:0098869cellular oxidant detoxificationGOBiological Process13expanded5.32E-071.12E-05
GO:0016441posttranscriptional gene silencingGOBiological Process17expanded5.33E-071.12E-05
GO:0070006metalloaminopeptidase activityGOMolecular Function7expanded5.44E-075.15E-06
GO:1990748cellular detoxificationGOBiological Process13expanded6.35E-071.32E-05
GO:0016209antioxidant activityGOMolecular Function13expanded6.41E-075.94E-06
GO:0038023signaling receptor activityGOMolecular Function43expanded6.60E-075.98E-06
GO:0051781positive regulation of cell divisionGOBiological Process18expanded7.37E-071.53E-05
GO:0033573high-affinity iron permease complexGOCellular Component5expanded8.76E-071.79E-05
GO:0034777recycling endosome lumenGOCellular Component5expanded8.76E-071.79E-05
GO:0099600transmembrane receptor activityGOMolecular Function40expanded9.16E-078.13E-06
GO:2000241regulation of reproductive processGOBiological Process30expanded9.73E-072.00E-05
GO:0097065anterior head developmentGOBiological Process9expanded9.98E-072.04E-05
GO:0009636response to toxic substanceGOBiological Process49expanded1.02E-062.04E-05
GO:0031999negative regulation of fatty acid beta-oxidationGOBiological Process5expanded1.03E-062.04E-05
GO:0033632regulation of cell-cell adhesion mediated by integrinGOBiological Process5expanded1.03E-062.04E-05
GO:0060447bud outgrowth involved in lung branchingGOBiological Process5expanded1.03E-062.04E-05
GO:0019221cytokine-mediated signaling pathwayGOBiological Process26expanded1.08E-062.12E-05
GO:0008484sulfuric ester hydrolase activityGOMolecular Function9expanded1.16E-069.99E-06
GO:0008170N-methyltransferase activityGOMolecular Function16expanded1.17E-069.99E-06
GO:0070050neuron cellular homeostasisGOBiological Process10expanded1.34E-062.63E-05
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