Benthic Polychaeta (Annelida) from La Paz Bay and Southwestern Gulf of California

Study Extent

The samples were collected during the oceanographic cruise GC06-1 on board the R/V “El Puma” of the Universidad Nacional Autónoma de México (UNAM), during the spring (May) of 2006. Eight stations with depths between 46 and 208 m were sampled inside La Paz Bay and Southwestern Gulf of California.

Sampling

The geographic position of the stations was determined with the on-board GPS, the depth with a Konsberg (SIMRAD ES60) echosounder, salinity and temperature with a Niels Brown CTD, and the dissolved oxygen concentration with the Winkler method (Strickland and Parsons, 1977), the granulometric analysis was carried out with the Carranza-Edwards (1997) method.

Method steps

1. The biological material was collected with a Reineck box corer. The sediment was sieved through a 0.5 mm sieve and the macrofauna was fixed with 10% formalin and preserved in ethylic alcohol 70%. The polychaetes were identified to species level and the validity of the identified species names was verified with recent systematic reviews and with the World Polychaeta database (Read and Fauchald, 2018).

1. Leiochrides sp.
2. Notomastus americanus Day, 1973
3. Maldane sp.
4. Aricidea (Acmira) lopezi Berkeley & Berkeley, 1956
5. Aricidea (Acmira) simplex Day, 1963
6. Aricidea (Aedicira) pacifica Hartman, 1944
7. Aricidea (Strelzovia) hartleyi Blake, 1996
8. Cirrophorus furcatus (Hartman, 1957)
9. Levinsenia gracilis (Tauber, 1879)
10. Levinsenia oculata (Hartman, 1957)
11. Linopherus kristiani Salazar-Vallejo, 1987
12. Eunice cedroensis Fauchald, 1970
13. Eunice vittatopsis Fauchald, 1970
14. Lumbrineris crassidentata (Fauchald, 1970)
15. Ninoe marthae Hernández-Alcántara, Pérez-Mendoza & Solís-Weiss, 2006
16. Diopatra farallonensis Fauchald, 1968
17. Diopatra neotridens Hartman, 1944
18. Diopatra papillata Fauchald, 1968
19. Diopatra splendidissima Kinberg, 1865
20. Heptaceras sp.
21. Kinbergonuphis cedroensis (Fauchald, 1968)
22. Kinbergonuphis gorgonensis (Monro, 1933)
23. Kinbergonuphis pigmentata (Fauchald, 1968)
24. Longibrachium sp.
25. Mooreonuphis sp.
26. Nothria conchylega (Sars, 1835)
27. Nothria occidentalis Fauchald, 1968
28. Paradiopatra sp.
29. Paradiopatra abyssalis (Imajima, 1999)
30. Polyodontes panamensis (Chamberlin, 1919)
31. Hemipodia simplex (Grube, 1857)
32. Ophiogoniada sp.
33. Oxydromus minutus (Hartmann-Schröder, 1959)
34. Aglaophamus erectans Hartman, 1950
35. Aglaophamus verrilli (McIntosh, 1885)
36. Ceratocephale papillata De León-González & Góngora-Garza, 1992
37. Sigambra tentaculata (Treadwell, 1941)
38. Subadyte mexicana Fauchald, 1972
39. Parexogone breviseta Kudenov & Harris, 1995
40. Parexogone molesta (Banse, 1972)
41. Salvatoria californiensis (Kudenov & Harris, 1994)
42. Syllis sp.
43. Aonides californiensis Rioja, 1947
44. Paraprionospio pinnata (Ehlers, 1901)
45. Prionospio dubia Day, 1961
46. Prionospio ehlersi Fauvel, 1928
47. Prionospio lighti Maciolek, 1985
48. Genus A (Spionidae)
49. Melinna sp.
50. Aphelochaeta monilaris (Hartman, 1960)
51. Aphelochaeta williamsae Blake, 1996
52. Caulleriella pacifica E. Berkeley, 1929
53. Pherusa capulata (Moore, 1909)
54. Scionella japonica Moore, 1903
55. Galathowenia piltzi Blake, 2000
56. Galathowenia pygidialis (Harman, 1960)

La Paz Bay and Southwestern Gulf of California