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:0031904endosome lumenGOCellular Component8expanded6.69E-069.82E-05
GO:0008233peptidase activityGOMolecular Function34expanded6.77E-064.30E-05
GO:0030432peristalsisGOBiological Process6expanded6.86E-069.65E-05
GO:0071257cellular response to electrical stimulusGOBiological Process6expanded6.86E-069.65E-05
GO:0016538cyclin-dependent protein serine/threonine kinase regulator activityGOMolecular Function9expanded7.05E-064.42E-05
GO:1902362melanocyte apoptotic processGOBiological Process4expanded7.27E-060.00010178
GO:0071438invadopodium membraneGOCellular Component5expanded7.61E-060.000107355
GO:0004175endopeptidase activityGOMolecular Function24expanded7.85E-064.84E-05
GO:0017144drug metabolic processGOBiological Process42expanded8.88E-060.000123796
GO:0043171peptide catabolic processGOBiological Process7expanded9.32E-060.000128655
GO:0051350negative regulation of lyase activityGOBiological Process7expanded9.32E-060.000128655
GO:0032890regulation of organic acid transportGOBiological Process11expanded1.01E-050.000139356
GO:0010715regulation of extracellular matrix disassemblyGOBiological Process6expanded1.07E-050.000145345
GO:1902751positive regulation of cell cycle G2/M phase transitionGOBiological Process8expanded1.07E-050.000145345
GO:0031102neuron projection regenerationGOBiological Process13expanded1.08E-050.00014656
GO:0006037cell wall chitin metabolic processGOBiological Process5expanded1.13E-050.000147133
GO:0009644response to high light intensityGOBiological Process5expanded1.13E-050.000147133
GO:0031659positive regulation of cyclin-dependent protein serine/threonine kinase activity involved in G1/S transition of mitotic cell cycleGOBiological Process5expanded1.13E-050.000147133
GO:0032075positive regulation of nuclease activityGOBiological Process5expanded1.13E-050.000147133
GO:0033631cell-cell adhesion mediated by integrinGOBiological Process5expanded1.13E-050.000147133
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