Taxonomy of the Kelp Gull Larus dominicanus Lichtenstein Revisited with Sex-Separated Analyses of Biometrics and Wing Tip Patterns

• Main Authors: Frédéric Jiguet, Peter Capainolo, Alan Tennyson
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2012
• Subjects: Antarctic; Antarctic Peninsula; Indian; Kerguelen; New Zealand; Patagonia; The Antarctic; Antarc*; Antarctica
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.654.7148; http://zoolstud.sinica.edu.tw/Journals/51.6/881.pdf

Lichtenstein revisited with sex-separated analyses of biometrics and wing tip patterns. Zoological Studies 51(6): 881-892. We investigated geographical phenotypic variations in the Kelp Gull Larus dominicanus Lichtenstein, 1823, by separately conducting analyses of biometrics and wing tip patterns in males and females. We attempted to investigate the separate taxonomic status of the recently described L. d. judithae and L. d. melisandae, define the geographical range of the Antarctic taxon L. d. austrinus, and look for variations among populations currently attributed to the nominate L. d. dominicanus in South America and New Zealand. Sex-separated analyses confirmed the discriminant structures and wing patterns of L. d. judithae (from Indian Ocean sub-Antarctic islands) and L. d. melisandae (from Madagascar). We failed to find differences among birds from Antarctica, South Georgia, and the Falklands Is., and suggest that the range of L. d. austrinus could extend from the Antarctic Peninsula to these sub-Antarctic islands. Populations sampled in southern Patagonia appeared close to L. d. austrinus, although they might also represent populations intermediate between L. d. dominicanus and L. d. austrinus. The subspecific status of L. d. antipodus from New Zealand populations was suggested by phenotypic characters, while a recently published molecular study of Kelp Gull populations suggests well-separated clades for birds breeding in New Zealand, Antarctica, and the Kerguelen Is., while the genetic separation of birds from South America (L. d. dominicanus) and Namibia (L. d. vetula) needs further study.