Phylogeography of California and Galápagos sea lions and population structure within the California sea lion

Marine Biology

Volumn 156, Issue 7, 2009, Pages 1375-1387

  Schramm, Yolanda ^a   Mesnick, S L ^b   De La Rosa, J ^a   Palacios, D M ^b,c   Lowry, M S ^b   Aurioles Gamboa, D ^d   Snell, H M ^e,f   Escorza Trevino S ^g  

^a UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIA   (Mexico)

^b SOUTHWEST FISHERIES SCIENCE CENTER   (United States)

^c UNIVERSITY OF HAWAII   (United States)

^d INSTITUTO POLITÉCNICO NACIONAL   (Mexico)

^e CHARLES DARWIN RESEARCH STATION   (Ecuador)

^f UNIVERSITY OF NEW MEXICO   (United States)

^g CALIFORNIA STATE UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

MARINE MAMMAL; MITOCHONDRIAL DNA; PALEOCEANOGRAPHY; PHYLOGEOGRAPHY; PINNIPED; POPULATION STRUCTURE;

ECUADOR; GALAPAGOS ISLANDS; GULF OF CALIFORNIA; PACIFIC ISLANDS; PACIFIC OCEAN; SOUTH AMERICA;

OTARIIDAE; ZALOPHUS; ZALOPHUS CALIFORNIANUS; ZALOPHUS WOLLEBAEKI;

EID: 67349189147     PISSN: 00253162     EISSN: None     Source Type: Journal    
DOI: 10.1007/s00227-009-1178-1     Document Type: Article

References (104)

1. K Acevedo-Whitehouse H de la Cueva FMD Gulland D Aurioles-Gamboa F Arellano-Carbajal F Suárez-Guemes 2003 Evidence of Leptospira interrogans infection in California sea lion pups from the Gulf of California J Wildl Dis 39 145 151 (Pubitemid 38836259)
2. K Acevedo-Whitehouse TR Spraker E Lyons SR Melin F Gulland RL Delong W Amos 2006 Contrasting effects of heterozygosity on survival and hookworm resistance in California sea lion pups Mol Ecol 15 1973 1982 10.1111/j.1365-294X.2006.02903.x (Pubitemid 43725679)
3. EP Akst PD Boersma RC Fleischer 2002 A comparison of genetic diversity between the Galápagos penguin and the Magellanic penguin Cons Gen 3 375 383 10.1023/A:1020555303124 (Pubitemid 35255367)
4. Amos B, Hoelzel AR (1991) Long-term preservation of whale skin for DNA analysis. In: Hoelzel AR (ed) The genetic ecology of whales and dolphins. Special publication no. 13 of the IWC, Cambridge, pp 99-103
5. GA Antonelis BS Stewart WS Perryman 1990 Foraging characteristics of female northern fur seals (Callorhinus ursinus) and California sea lions (Zalophus californianus) Can J Zool 68 150 158 10.1139/z90-022 (Pubitemid 20426863)
6. U Arnason E Johnsson 1992 The complete mitochondrial DNA sequence of the harbor seal, Phoca vitulina J Mol Evol 34 493 505 10.1007/BF00160463
7. Aurioles-Gamboa D, Díaz-Guzmán C, Le Boeuf BJ, Casper D (2009) Temporomandibular arthritis and osteomielitis in California sea lions (Zalophus califorinianus). J Zoo Wildl Med (in press)
8. Aurioles-Gamboa D, Le Boeuf BJ (1991) Effects of the El Niño 1982-1983 on California Sea Lions in México. In: Trillmich F, Ono KA (eds) Pinnipeds and El Niño: responses to environmental stress. Ecological studies 88. Springer, New York, pp 112-118
9. D Aurioles-Gamboa A Zavala-González 1994 Algunos factores ecológicos que determinan la distribución y abundancia del lobo marino Zalophus californianus, en el Golfo de California Cienc Mar 20 535 553
10. D Aurioles-Gamboa F Sinsel C Fox E Alvarado O Maravilla-Chávez 1983 Winter migration of subadult male California sea lions Zalophus californianus in the southern part of Baja California J Mammal 64 513 518 10.2307/1380369
11. Aurioles-Gamboa D, Castillo S, Contreras AI, Barnes LG (2000) Patron latitudinal en caracteres dentarios del lobo marino de California en Norteamérica (Zalophus californianus californianus). In: XXV Reunión Internacional para el Estudio de los Mamíferos Marinos. La Paz, Baja California Sur, México
12. AR Baker TR Loughlin V Burkanov CW Matson RG Trujillo DG Calkins JK Wickliffe JW Bickham 2005 Variation of mitochondrial control region sequences of Steller sea lions: the three-stock hypothesis J Mammal 86 1075 1084 10.1644/04-MAMM-A-113R1.1 (Pubitemid 43068494)
13. Bartholomew GA (1967) Seal and sea lion populations of the Channel Islands. In: Philbrick RN (ed) Proceedings of the symposium on the biology of the Calif. Islands, Santa Barbara Botanic Garden. Santa Barbara, CA, pp 229-243
14. LB Beheregaray N Havill J Gibbs T Fritts JR Powell G Caccone 2004 Giant tortoises are not so slow: rapid diversification and biogeographic consensus in the Galápagos Proc Natl Acad Sci USA 101 6514 6519 10.1073/pnas. 0400393101 (Pubitemid 38586005)
15. G Bernardi L Findley A Rocha-Olivares 2003 Vicariance and dispersal across Baja California in disjunct marine fish populations Evol Int J Org Evol 57 1599 1609 (Pubitemid 36953648)
16. JW Bickham JC Patton TR Loughlin 1996 High variability for control-region sequences in a marine mammal: implications for conservation and biogeography of Steller sea lion (Eumetopias jubatus) J Mammal 77 95 108 10.2307/1382712 (Pubitemid 3041925)
17. Boness DJ, Oftedal OT, Ono KA (1991) The effect of El Niño on pup development in the California Sea Lion (Zalophus californianus) I. Early postnatal growth. In: Trillmich F, Ono KA (eds) Pinnipeds and El Niño: responses to environmental stress. Ecological studies 88. Springer, New York, pp 173-179
18. L Bowen BM Aldridge R DeLong S Melin C Godínez A Zavala F Gulland L Lowenstine JL Stott ML Johnson 2006 MHC gene configuration variation in geographically disparate populations of California sea lions (Zalophus californianus) Mol Ecol 15 529 533 10.1111/j.1365-294X.2005.02612.x
19. KE Brassel D Reif 1979 A procedure to generate Thiessen polygons Geogr Anal 11 289 303
20. RA Browne DJ Anderson JN Houser F Cruz KJ Glasgow CN Hodges G Massey 1997 Genetic diversity and divergence of endangered Galápagos and Hawaiian petrel populations Condor 99 812 815 10.2307/1370494 (Pubitemid 27353972)
21. S Brunner 2004 Fur seals and sea lions (Otariidae): identification of species and taxonomic review Syst Biodivers 1 339 439 10.1017/S147720000300121X
22. JJ Capella L Flórez-González P Falk-Fernández DM Palacios 2002 Regular appearance of otariid pinnipeds along the Colombian Pacific coast Aquat Mamm 28 67 72
23. Cenami Spada E, Hanggi EB, Schusterman RJ (1991) Variation in vocalizations and individual recognition in two subspecies of California sea lions. In: Abstracts of the 9th Biennial conference on the biology of marine mammals. Chicago, Illinois
24. DM Christie RA Duncan AR McBirney MA Richards WM White KS Harp CG Fox 1992 Drowned islands downstream from the Galapagos hotspot imply extended speciation times Nature 355 246 248 10.1038/355246a0
25. 2. Quat Sci Rev 25:3,150-153,184, doi: 10.1016/j.quascirev.2006.07. 008 (Pubitemid 46209385)
26. KA Crandall AR Templeton 1993 Empirical tests of some predictions from coalescent theory with applications to intraspecific phylogeny reconstruction Genetics 134 959 969 (Pubitemid 23193592)
27. JL Davies 1958 The Pinnipedia: an essay in zoogeography Geogr Rev 48 474 493 10.2307/211670
28. L Del Toro G Heckel VF Camacho-Ibar Y Schramm 2006 California sea lion (Zalophus californianus californianus) have lower chlorinated hydrocarbon contents in Baja California, México than in Southern California, USA Environ Pollut 142 83 92 10.1016/j.envpol.2005.09.019 (Pubitemid 44316726)
29. DeLong RL, Antonelis GA, Oliver CW, Stewart BS, Lowry MC, Yochem PK (1991) Effects of the 1982-83 El Niño on several population parameters and diet of California Sea Lions on the California Channel Islands. In: Trillmich F, Ono KA (eds) Pinnipeds and El Niño: responses to environmental stress. Ecological studies 88. Springer, New York, pp 166-172
30. TA Deméré A Berta PJ Adam 2003 Pinnipedimorph evolutionary biogeography Bull Am Mus Nat Hist 279 32 76 10.1206/0003-0090(2003)279<0032: C>2.0.CO;2 (Pubitemid 41577171)
31. Dickerson BR, Ream RR, Vignieri SN, Bentzen P, Antonelis GA (2008) Population Structure as Revealed by mtDNA and Microsatellites in Northern Fur Seals, Callorhinus ursinus. In: Alaska Marine Science Symposium, Anchorage, AK
32. Eibl-Eibesfeldt I (1984) The Galapagos seals. Part 1. Natural history of the Galapagos sea lion (Zalophus californianus wollebaeki, Siverstsen). In: Perry R (ed) Key environments: Galapagos. Pergamon Press, Oxford, pp 207-214
33. F Elorriaga-Verplancken D Aurioles-Gamboa 2008 Trace metal concentrations in the hair of Zalophus californianus pups and their relation to feeding habits Biol Trace Elem Res 126 148 164 10.1007/s12011-008-8186-8
34. Espinosa de los Reyes MG (2007) Variabilidad espacial de la dieta del lobo marino de California (Zalophus californianus californianus, Lesson 1828). MSc thesis, CICESE, Ensenada, BC, México
35. Espinosa-Carreón TL, Strub PT, Beier E, Ocampo-Torres F, Glaxiola-Castro G (2004) Seasonal and interannual variability of satellite-derived chlorophyll pigment, surface height, and temperature off Baja California. J Geophys Res 109(C03039). doi: 10.1029/2003JC002105 (Pubitemid 38708227)
36. L Excoffier P Smouse 1994 Using allele frequencies and geographic subdivision to reconstruct gene genealogies within a species. Molecular variance parsimony Genetics 136 343 359 (Pubitemid 24016698)
37. L Excoffier P Smouse J Quattro 1992 Analysis of molecular variance inferred from metric distances among DNA haplotypes: application to human mitochondrial DNA restriction data Genetics 131 479 491
38. Francis JM, Heath CB (1991) Population abundance, pup mortality, and copulation frequency in the California sea lion in relation to the 1983 El Niño on San Nicolas Island. In: Trillmich F, Ono KA (eds) Pinnipeds and El Niño: responses to environmental stress. Ecological studies 88. Springer, New York, pp 119-128
39. VL Friesen DJ Anderson TE Steeves H Jones EA Schreiber 2002 Molecular support for species status of the Nazca booby (Sula granti) Auk 119 3 820 826 10.1642/0004-8038(2002)119[0820:MSFSSO]2.0.CO;2
40. JP Gallo-Reynoso JL Solórzano-Velasco 1991 Two new sightings of California sea lions on the southern coast of México Mar Mamm Sci 7 96 10.1111/j.1748-7692.1991.tb00557.x
41. FJ García-Rodríguez D Aurioles-Gamboa 2004 Spatial and temporal variation in the diet of the California sea lion (Zalophus californianus) in the Gulf of California, México Fish Bull (Washington, DC) 102 47 62 (Pubitemid 38319086)
42. D Geist 1996 On the emergence and submergence of the Galápagos Islands Not Galap 56 5 9
43. M González-Suárez K McCluney D Aurioles-Gamboa LR Gerber 2006 Incorporating uncertainty in spatial structure for viability predictions: a case study of California sea lions Anim Conserv 9 219 227 10.1111/j.1469-1795. 2006.00022.x
44. Grehan J (2001) Biogeography and evolution of the Galapagos: integration of the biological and geological evidence. Biol J Linn Soc Lond 74(3):267-287. doi: 10.1006/bijl.2001.0576 (Pubitemid 34029872)
45. S Guo E Thomson 1992 Performing the exact test of Hardy-Weinberg proportion for multiple alleles Biometrics 48 361 372 10.2307/2532296
46. A Harlin-Cognato JW Bickham TR Loughlin RL Honeycutt 2006 Glacial refugia and the phylogeography of Steller's sea lion (Eumetopias jubatus) in the North Pacific J Evol Biol 19 955 969 10.1111/j.1420-9101.2005.01052.x
47. Heath CB (2002) California, Galapagos, and Japanese Sea Lions. In: Perrin WF, Würsig B, Thewissen JGM (eds) Enciclopedia of Marine Mammals. Academic Press, San Diego, pp 180-186
48. C Hernández-Camacho D Aurioles-Gamboa J Laake L Gerber 2008 Survival rates of the California sea lion, Zalophus californianus, in México J Mammal 89 1059 1066 10.1644/07-MAMM-A-404.1
49. C Hernández-Camacho D Aurioles-Gamboa L Gerber 2008 Age-specific birth rates of California sea lions (Zalophus californianus) in the Gulf of California, México Mar Mamm Sci 24 664 676 10.1111/j.1748-7692.2008. 00199.x
50. J Hey 1991 The structure of genealogies and the distribution of fixed differences between DNA sequence samples from natural populations Genetics 128 831 840
51. Hickey BM (1998) Coastal oceanography of western North America from the tip of Baja California to Vancouver Island, coastal segment (8,E). In: Robinson AR, Brink KH (eds) The sea, vol 11, pp 345-393. Wiley, New York, pp 345-393
52. SYW Ho MJ Phillips A Cooper AJ Drummond 2005 Time dependency of molecular rate estimates and systematic overestimation of recent divergence times Mol Biol Evol 22 1561 1568 10.1093/molbev/msi145 (Pubitemid 40800685)
53. DK Jacobs TA Haney KD Louie 2004 Genes, diversity, and geologic process on the Pacific coast Annu Rev Earth Planet Sci 32 601 652 10.1146/annurev.earth. 32.092203.122436 (Pubitemid 38836380)
54. M Kahru SG Marinone SE Lluch-Cota A Parés-Sierra BG Mitchell 2004 Ocean-color variability in the Gulf of California: scales from days to ENSO Deep Sea Res Part II Top Stud Oceanogr 51 139 146 10.1016/j.dsr2.2003.04.001 (Pubitemid 38791446)
55. K Kannan N Kajiwara BJ Le Boeuf S Tanabe 2004 Organochlorine pesticides and polychlorinated biphenyls in California sea lions Environ Pollut 131 425 434 10.1016/j.envpol.2004.03.004 (Pubitemid 38917017)
56. King JE (1983) Seals of the World. National History British Museum. Cornell University Press, New York
57. Kooyman GL, Trillmich F (1986) Diving behavior of Galapagos sea lions. In: Gentry RL, Kooyman GL (eds) Fur seals-maternal strategies on land and at sea. Princeton University Press, Princeton, pp 209-220
58. A Koutavas JP Sachs 2008 Northern timing of deglaciation in the eastern equatorial Pacific from alkenone paleothermometry Paleoceanography 23 PA4205 10.1029/2008PA001593
59. Kumar S, Tamura K, Jakobsen IB, Nei M (2001) Mega, version 2.1. Molecular Evolutionary Genetics Analysis software. Arizona State University, Tempe
60. MV Labrada D Aurioles-Gamboa MI Castro-González 2007 Relation of dental wear to the concentrations of essential minerals in teeth of the California sea lion Zalophus californianus californianus Biol Trace Elem Res 114 107 126 (Pubitemid 46631870)
61. KT Lawrence Z Liu TD Herbert 2006 Evolution of the eastern tropical Pacific through Plio-Pleistocene glaciation Science 321 79 83 10.1126/science.1120395
62. BJ Le Boeuf D Aurioles-Gamboa R Condit C Fox R Gisiner R Romero F Sincel 1983 Size and distribution of the California sea lion in México Proc Calif Acad Sci 43 77 85
63. DW Lea DK Pak CL Belanger HJ Spero MA Hall NJ Shackleton 2006 Paleoclimate history of Galápagos surface waters over the last 135,000 yr Quat Sci Rev 25 1152 1167 10.1016/j.quascirev.2005.11.010 (Pubitemid 43832033)
64. Lesson RP (1828) Phoque. In: Bory de Sanint-Vicent JBGM (ed) Dictionaire Classique d'Histoire Naturelle. Paris Rey et Gravier, Paris
65. Lluch-Belda D (1969) El lobo marino de California, Zalophus californianus (Lesson, 1828). Allen 1880; observaciones sobre su ecología y explotación. Instituto Mexicano de Recursos Naturales Renovables, México
66. Lowry MS, Maravilla-Chávez MO (2002) Abundancia de lobos marinos de California (Zalophus californianus) en Baja California, México y Estados Unidos de America durante julio y agosto del 2000. In: XXVII Reunión Internacional para el estudios de los Mamíferos Marinos. Veracruz, Ver. México
67. Lowry MS, Boveng P, DeLong RJ, Oliver CW, Stewart BS, De Anda-Delgado H, Barlow J (1992) Status of the California sea lion (Zalophus californianus californianus) population in 1992. NOAA-TM-NMFS-SWFSC-LJ-92-32, La Jolla, pp 1-24
68. JE Maldonado F Orta-Dávila BS Stewart E Geffen RK Wayne 1995 Intraspecific genetic differentiation in California sea lions (Zalophus californianus) from Southern California and the Gulf of California Mar Mamm Sci 11 46 58 10.1111/j.1748-7692.1995.tb00273.x
69. S Manel MK Schwartz G Luikart P Taberlet 2003 Landscape genetics: combining landscape ecology and population genetics Trends Ecol Evol 18 189 197 10.1016/S0169-5347(03)00008-9 (Pubitemid 36345738)
70. JM Maniscalco K Wynne KW Pitcher MB Hanson SR Melin S Atkinson 2004 The occurrence of California sea lions in Alaska Aquat Mamm 30 427 433 10.1578/AM.30.3.2004.427 (Pubitemid 40098210)
71. F Manni E Guérard E Heyer 2004 Geographic patterns of (genetic, morphologic, linguistic) variation: how barriers can be detected by "Monmonier's algorithm" Am J Hum Biol 76 173 190 10.1353/hub.2004.0034 (Pubitemid 39014211)
72. Melin SR, DeLong RL (1999) At-sea distribution and diving behavior of California sea lion females from San Miguel Island, California. In: Browne DR, Mitchell KL, Chaney HW (eds) Proceeding of the fifth California islands symposium. Santa Barbara Museum of Natural History, Santa Barbara, pp 402-407
73. C Moritz 1994 Defining "Evolutionarily Significant Units" for conservation Trends Ecol Evol 9 373 375 10.1016/0169-5347(94)90057-4 (Pubitemid 2130029)
74. Morris PA, Oliver GW, Elliott J, Melin SR, DeLong RL (1999) El Niño 1998 and changes in California sea lion, Zalophus californianus, use of Año Nuevo island. In: Abstracts of the 13th Biennial Conference on the Biology of Marine Mammals, Wailea, Hawaii
75. SD Newsome MA Etnier PL Koch D Aurioles-Gamboa 2006 Using Carbon and Nitrogen isotopes to investigate reproductive strategies in Northeast Pacific otariids Mar Mamm Sci 22 556 572 10.1111/j.1748-7692.2006.00043.x (Pubitemid 43876183)
76. DM Palacios F Félix L Flórez-González JJ Capella D Chiluiza BJM Haase 1997 Sightings of Galápagos sea lions (Zalophus californianus wollebaeki) on the coasts of Colombia and Ecuador Mammalia 61 114 116 (Pubitemid 27222167)
77. Peterson RS, Bartholomew GA (1967) The natural history and behavior of the California sea lion. Special publication no. 1. The American society of mammalogists, pp 1-79
78. H Porras-Peters D Aurioles-Gamboa VH Cruz-Escalona PL Koch 2008 Position, breadth and trophic overlap of sea lions (Zalophus californianus) in the Gulf of California, México Mar Mamm Sci 24 554 576 10.1111/j.1748-7692.2008. 00197.x
79. K Rassmann 1997 Evolutionary age of the Galapagos iguanas predates the age of the present Galapagos Islands Mol Phylogenet Evol 7 158 172 10.1006/mpev.1996.0386 (Pubitemid 127345879)
80. Repenning CA, Ray CE, Grigourescou D (1979) Pinniped biogeography. In: Gray J, Boucot AJ (eds) Historical biogeography, plate tectonics, and the changing environment. Proceedings of the 37th Annual Biology Colloquium, and selected papers. Oregon State University, Corvallis, Oregon, pp 357-369
81. Riedman M (1990) The Pinnipeds. Seals, sea lions, and walruses. University of California Press, Berkeley/Los Angeles
82. Salazar S (2002) Lobo Marino y Lobo Peletero. In: Danulat E, Edgar GJ (eds) Reserva Marina de Galápagos. Linea Base de la biodiversidad. Fund Charles Darwin/Ser Par Nac Galap, Santa Cruz, Galápagos, Ecuador, pp 267-290
83. S Salazar RH Bustamante 2003 Effects of the 1997-98 El Niño on population size and diet of the Galápagos sea lion (Zalophus wollebaeki) Not Galap 62 40 45
84. Salazar S, Michuy V (2008) Estado poblacional y conservación de los pinnípedos de las islas Galápagos. XIII Reunión de Trabajo de Especialístas en Mamíferos Acuáticos de América del Sur y 7° Congreso SOLAMAC. Montevideo, Uruguay, p 196
85. Sambrook J, Fritsch EF, Maniatis T (1989) Molecular cloning: a laboratory manual. Cold Spring Harbor Laboratory Press, Cold Spring Harbor
86. E Santamaría del Ángel R Millán-Nuñez A González-Silvera F Müller-Karger 2002 The color signature of the Ensenada Front and its seasonal and interannual variability CCOFI Rep 43 155 161 (Pubitemid 36837564)
87. Schneider S, Roessli D, Excoffier L (2001) Arlequin, version 2. A software for population genetic data analysis. Genetic and Biometry Laboratory, University of Geneva, Switzerland
88. E Sivertsen 1953 A new species of sea lion, Zalophus wollebaeki from the Galapagos Islands Det Kong Nor Videnskaps Selsk Forh 26 1 3
89. Sivertsen E (1954) A survey of the eared seals (family Otariidae) with remarks on the Antarctic seals collected by M/K "Norwegian" in 1928-1929. Det Nor Videnskaps-Akad Oslo
90. DT Stewart AJ Baker 1994 Patterns of sequence variation in the mitochondrial D-loop region of shrews Mol Biol Evol 11 9 21 (Pubitemid 24034119)
91. Szteren D (2006) Regionalización ecológica de las colonias reproductivas de Zalophus c. californianus en el Golfo de California, México. PhD thesis, CICIMAR-IPN, La Paz, BCS México
92. Szteren D, Aurioles D, Gerber LR (2006) Population status and trends of the California sea lion (Zalophus californianus californianus) in the Gulf of California, México. In: Trites AW, Atkinson SK, DeMaster DP, Fritz LW, Gelatt TS, Rea LD, Wynne KM (eds) Sea Lions of the World. Alaska Sea Grant College Program, Lowell Wakefield Fisheries Symposium Series, Rhode Island, pp 369-384
93. Trillmich F, Dellinger T (1991) The effects of El Niño on Galapagos Pinnipeds. In: Trillmich F, Ono KA (eds) Pinnipeds and El Niño: Responses to environmental stress. Ecological Studies 88. Springer, New York, pp 66-74
94. F Trillmich D Limberger 1985 Drastic effects of El Niño on Galapagos pinnipeds Oecologia 67 19 22 10.1007/BF00378445 (Pubitemid 17245357)
95. S Villegas-Amtmann DP Costa Y Tremblay S Salazar D Aurioles-Gamboa 2008 Multiple foraging strategies in a marine apex predator, the Galapagos sea lion Zalophus wollebaeki Mar Ecol Prog Ser 363 209 299 10.3354/meps07457
96. PL Walker S Craig 1979 Archaeological evidence concerning the prehistoric occurrence of sea mammals at Point Bennet, San Miguel Island Calif Fish Game 65 50 54
97. Walker PL, Kennett DJ, Jones TL, DeLong R (1999) Archaeological investigations at the Point Bennett pinniped rookery on San Miguel Island. In: Brown DR, Mitchell KC, Chaney HW (eds) Proceedings of the fifth California Islands symposium. US Department of the Interior Minerals Management Service, Pacific OCS Region, pp 628-632
98. DS Weber BS Stewart N Lehman 2004 Genetic consequences of a severe population bottleneck in the Guadalupe fur seal (Arctocephalus townsendi) J Hered 95 144 153 10.1093/jhered/esh018 (Pubitemid 38509731)
99. R Werner K Hoernle P van den Bogaard C Ranero R von Huene D Korich 1999 Drowned 14-m.y.-old Galápagos Archipelago off the coast of Costa Rica: Implications for tectonic and evolutionary models Geology 27 499 502 0.1130/0091-7613(1999)027<0499:DMYOGP>2.3.CO;2 (Pubitemid 29483685)
100. JBW Wolf D Tautz F Trillmich 2007 Galápagos and California sea lions are separate species: genetic analysis of the genus Zalophus and its implications for conservation management Front Zool 4 20 10.1186/1742-9994-4-20 (Pubitemid 350098952)
101. JBW Wolf C Harrod S Brunner S Salazar F Trillmich D Tautz 2008 Tracing early stages of species differentiation: ecological, morphological and genetic divergence of Galápagos sea lion populations BMC Evol Biol 8 150 10.1186/1471-2148-8-150
102. LP Wynen SD Goldsworthy SJ Insley M Adams JW Bickham J Francis JP Gallo-Reynoso AR Hoelzel P Majluf RWG White R Slade 2001 Phylogenetic relationships within the eared seals (Otariidae: Carnivora): Implications for the historical biogeography of the Family Mol Phylogenet Evol 21 270 284 10.1006/mpev.2001.1012 (Pubitemid 33098572)
103. A Zavala-González E Mellink 2000 Historical exploitation of the California sea lion, Zalophus californianus, in México Mar Fish Rev 62 35 40 (Pubitemid 32592982)
104. Zavaleta-Lizárraga L (2003) Variaciones geográficas en morfometría craneal en machos adultos de lobo marino de California (Zalophus californianus) en México. MSc thesis, CICIMAR-IPN, México