Lagis koreni Malmgren 1866
- 1. Departamento de Bioloxía, Universidade da Coruña, 15008 A Coruña, Spain.
- 2. Deceased 9 May 2020. Former addresss: RORUM ehf., Brynjólfsgötu 5, 107 Reykjavík, Iceland.
- 3. Departamento de Biología (Zoología), Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain. & Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Universidad Autónoma de Madrid, 28049 Madrid, Spain.
Description
Lagis koreni Malmgren, 1866
Figs 1B, 2B, 3B, 4 I–L, 16 – 17
Lagis koreni Malmgren, 1866: 360.
Pectinaria koreni – Hessle 1917: 80.
Pectinaria (Lagis) koreni – Fauvel 1927: 221. — Holthe 1986: 18. — Hartmann-Schröder 1996: 483. — Kirkegaard 1996: 283.
Material examined (801 specimens, 75.1% of total specimens identified, in ten samples)
ICELAND – North Western Fjords • 1 spec.; BIOICE station 31, sample 2557; 66º21′90″ N, 23º04′93″ W; 14 Jul. 1993; 7.23ºC; 34.34 ppm; 20 m depth; sand; IINH-40483. – South coast • 1 spec.; BIOICE station 553, sample 2388; 63º30′10″ N, 22º03′70″ W; 30 Jun. 1993; 7.13ºC; 35.1 ppm; 171 m depth; silty sand; IINH-40478 • 1 spec.; BIOICE station 580, sample 2454; 63º20′10″ N, 21º10′20″ W; 4 Jul. 1993; 7.19ºC; 35.08 ppm; 152 m depth; sediment unknown; MNCN 16.01/18034 • 3 specs; BIOICE station 582, sample 2459; 63º29′80″ N, 21º39′40″ W; 4 Jul. 1993; 7.10ºC; 35.08 ppm; 125 m depth; silt; IINH-40480 • 3 specs; BIOICE station 583, sample 2463; 63º25′40″ N, 21º39′89″ W; 5 Jul. 1993; 7.12ºC; 35.08 ppm; 133 m depth; silty sand and gravel; IINH-40481 • 6 specs; BIOICE station 588, sample 2477; 63º39′69″ N, 20º49′63″ W; 6 Jul. 1993;7.80ºC; 34.92 ppm; 64 m depth; shelly sand; IINH-40482 • 4 specs; BIOICE station 715, sample 2818; 63º14′64″ N, 17º50′70″ W; 25 Aug. 1995; 7.18ºC; 35.14 ppm; 206 m depth; silty sand; IINH-40484 • 770 specs; BIOICE station 718, sample 2827; 63º41′00″ N, 17º39′90″ W; 25 Aug. 1995; 8.79ºC; 34.77 ppm; 44 m depth; sandy silt; IINH-40485 • 7 specs; BIOICE station 309, sample 3078; 63º28′16″ N, 19º33′18″ W; 13 Jul. 1997; 9.55ºC; 33.97 ppm; 21 m depth; sediment unknown; IINH-40486 • 5 specs; BIOICE station 726, sample 3257; 63º20′10″ N, 19º52′20″ W; 11 Sep. 2001; 7.92ºC; 35.19 ppm; 221 m depth; sediment unknown; IINH-40487.
OccurrenceOff south-western coast of Iceland (Fig. 1B). Depth range: 20 to 221 m; bottom temperature range: 7.10 to 9.55°C (Fig. 2B). The shallowest sample (2557; 20 m) was found in north-western fjords. The easternmost sample (2827; 44 m) contains the highest number of pectinariid specimens found in any BIOICE sample (770; 96.5%)). Water mass/es: MNAW.
RemarksBody and chaetal features match well those of L. koreni provided by Holthe (1986), including the shape and number of paleae (Figs 4I, K, 16A, 17A), smooth opercular rim (Fig. 4I, K), cirrate cephalic veil (Fig. 17 A–B), a crenulated scaphe (Fig. 16F) provided with slightly distally curved hooks (Figs 16F insert, 17F), and 16 uniramous and 12 biramous segments (see Holthe 1986). However, SEM examination again reveals differences between the uncini features and those reported in the literature, that seem related to morphological variability according to size/age. Large and mid-sized specimens (Fig. 16 C–E) bear uncini as described in the literature, i.e., having 3–4 vertical rows with many teeth (6–8) of similar size each and showing no variation across the body or within an individual torus; by contrast, uncini of small specimens (Fig. 17 C–E) have more rows of teeth (5–7) in frontal view (Fig. 16E vs Fig. 17 D–E).
Finally, SEM micrographs also show circular areas under the parapodia with segmentary arrangement (Fig. 16B); these are likely nephridial or glandular and may have a role in tube building, although this should be confirmed in future morphological studies.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- IINH , MNCN
- Event date
- 1993-06-30 , 1993-07-04 , 1993-07-05 , 1993-07-06 , 1993-07-14 , 1995-08-25 , 1997-07-13 , 2001-09-11
- Family
- Pectinariidae
- Genus
- Lagis
- Kingdom
- Animalia
- Material sample ID
- IINH-40478 , IINH-40480 , IINH-40481 , IINH-40482 , IINH-40484 , IINH-40485 , IINH-40486 , IINH-40487 , MNCN 16.01/18034
- Order
- Terebellida
- Phylum
- Annelida
- Scientific name authorship
- Malmgren
- Species
- koreni
- Taxon rank
- species
- Verbatim event date
- 1993-06-30/07-04 , 1993-07-05/1995-08-25 , 1993-07-14 , 1997-07-13 , 2001-09-11
- Taxonomic concept label
- Lagis koreni Malmgren, 1866 sec. Parapar, Palomanes, Helgason & Moreira, 2020
References
- Malmgren A. J. 1866. Nordiska Hafs-Annulater. Ofversigt af Konglia Vetenskaps-Akademiens Forlandlingar, Stockholm 22: 355 - 410.
- Hessle C. 1917. Zur Kenntnis der terebellomorphen Polychaeten. Zoologiska Bidrag fran Uppsala 5: 39 - 258.
- Fauvel P. 1927. Polychetes sedentaires. Addenda aux errantes, archiannelides, myzostomaires. Faune de France 16: 1 - 494.
- Holthe T. 1986. Polychaeta Terebellomorpha. Marine Invertebrates of Scandinavia 7, Norwegian University Press, Oslo.
- Hartmann-Schroder G. 1996. Annelida, Borstenwurmer, Polychaeta. Die Tierwelt Deutschlands 58, 2 nd ed. Gustav Fischer, Jena.
- Kirkegaard J. B. 1996. Havborsteorme II. Sedentaria. Danmarks Fauna 86: 1 - 451.