Impacts of sex ratio reduction on male aggression in the Critically endangered Hawaiian monk seal Monachus schauinslandi

Endangered Species Research

Volumn 11, Issue 2, 2010, Pages 123-132

  Johanos, Thea C ^a   Becker, Brenda L ^a   Baker, Jason D ^a   Ragen, Timothy J ^b   Gilmartin, William G ^c   Gerrodette, Tim ^d  

^a PACIFIC ISLANDS FISHERIES SCIENCE CENTER   (United States)

^b Marine Mammal Commission   (United States)

^c Hawaii Wildlife Fund   (United States)

^d SOUTHWEST FISHERIES SCIENCE CENTER   (United States)

Author keywords

Female survival; Hawaiian monk seal; Male aggression; Mating injuries; Sex ratio

Indexed keywords

AGGRESSION; ENDANGERED SPECIES; FEMALE BEHAVIOR; HABITAT USE; INJURY; MALE BEHAVIOR; MORTALITY RISK; PINNIPED; SEX RATIO; SOCIAL STRUCTURE; SURVIVAL;

HAWAII [UNITED STATES]; HAWAIIAN ISLANDS; LAYSAN; UNITED STATES;

MONACHUS SCHAUINSLANDI;

EID: 77952295532     PISSN: 18635407     EISSN: 16134796     Source Type: Journal    
DOI: 10.3354/esr00259     Document Type: Article

References (34)

1. Alcorn DJ (1984) The Hawaiian monk seal on Laysan Island: 1982. US Department of Commerce, NOAA Tech Memo NMFS, NOAA-TM-NMFS-SWFC-42, Honolulu, HI
2. Alcorn DJ, Buelna EK (1989) The Hawaiian monk seal on Laysan Island: 1983. US Department of Commerce, NOAA Tech Memo NMFS, NOAA-TM-NMFS-SWFC-124
3. Atkinson S, Becker BL, Johanos TC, Pietraszek JR, Khun BC (1994) Reproductive morphology and status of female Hawaiian monk seals (Monachus schauinslandi) fatally injured by adult male seals. J Reprod Fertil 100:225-230
4. Baker JD, Thompson PM (2007) Temporal and spatial variation in age-specific survival rates of a long-lived mammal, the Hawaiian monk seal. Proc Biol Sci 274:407-415
5. Baker JD, Harting AL, Johanos TC (2006) Use of discovery curves to assess abundance of Hawaiian monk seals. Mar Mamm Sci 22:847-861
6. Banish LD, Gilmartin WG (1992) Pathological findings in the Hawaiian monk seal. J Wildl Dis 28:428-434
7. Boness DJ, Bowen WD, Iverson SJ (1995) Does male harassment of females contribute to reproductive synchrony in the grey seal by affecting maternal performance? Behav Ecol Sociobiol 36:1-10
8. Boness DJ, Craig MP, Honigman L, Austin S (1998) Fostering behavior and the effect of female density in Hawaiian monk seals, Monachus schauinslandi. J Mammal 79:1060-1069
9. Galimberti F, Boitani L (1999) Demography and breeding biology of a small, localized population of southern elephant seals (Mirounga leonina). Mar Mamm Sci 15:159-178
10. Galimberti F, Boitani L, Marzetti I (2000) Frequency and costs of harassment in southern elephant seals. Ethol Ecol Evol 12:345-365
11. Gilmartin WG, Eberhardt LL (1995) Status of the Hawaiian monk seal (Monachus schauinslandi) population. Can J Zool 73:1185-1190
12. Gilmartin WG, Delong RL, Smith AW, Griner LA, Dailey MD (1980) An investigation into unusual mortality in the Hawaiian monk seal, Monachus schauinslandi. In: Grigg RW, Pfund RT (eds) Proceedings of the symposium on status of resource investigations in the Northwestern Hawaiian Islands. UNIHI-SEAGRANT-MR-80-04, April 24-25, 1980, University of Hawaii, Honolulu, HI, p 32-41
13. Harting AL, Baker JD, Johanos TC (2007) Reproductive patterns of the Hawaiian monk seal. Mar Mamm Sci 23:553-573
14. Hiruki LM, Gilmartin WG, Becker BL, Stirling I (1993a) Wounding in Hawaiian monk seals (Monachus schauinslandi). Can J Zool 71:458-468
15. Hiruki LM, Stirling I, Gilmartin WG, Johanos TC, Becker BL (1993b) Significance of wounding to female reproductive success in Hawaiian monk seals (Monachus schauinslandi) on Laysan Island. Can J Zool 71:469-474.
16. IUCN (2010) IUCN Red List of threatened species. Version 2010.1. www.iucnredlist.org (accessed 31 March 2010)
17. Johanos TC, Austin SL (1988) The Hawaiian monk seal population structure, reproduction, and survival on Laysan Island, 1985. US Department of Commerce, NOAA Tech Memo NMFS, NOAA-TM-NMFS-SWFC-118, Honolulu, HI
18. Johanos TC, Kam AKH (1986) The Hawaiian monk seal on Lisianski Island: 1983. US Department of Commerce, NOAA Technical Memorandum NMFS, NOAA-TMNMFS-SWFC-58, Honolulu, HI
19. Johanos TC, Kam AKH, Forsyth RG (1987) The Hawaiian monk seal on Laysan Island: 1984. US Department of Commerce, NOAA Tech Memo NMFS, NOAA-TMNMFS-SWFC-70, Honolulu, HI
20. Johanos TCB, Becker BL, Brown ML, Choy BK, Hiruki LM, Brainard RE, Westlake RL (1990) The Hawaiian monk seal on Laysan Island, 1988. US Department of Commerce, NOAA Tech Memo NMFS, NOAA-TM-NMFS-SWFC-151, Honolulu, HI
21. Johanos TC, Becker BL, Ragen TJ (1994) Annual reproductive cycle of the female Hawaiian monk seal (Monachus schauinslandi). Mar Mamm Sci 10:13-30
22. Johnson BW, Johnson PA (1978) Observations of the Hawaiian monk seal on Laysan Island: 1977. US Department of Commerce, National Technical Information Service, No. PB-285-428
23. Johnson BW, Johnson PA (1981a) The Hawaiian monk seal on Laysan Island: 1978. US Department of Commerce, National Technical Information Service, Springfield, VA. PB-285-428
24. Johnson BW, Johnson PA (1981b) Estimating the Hawaiian monk seal population on Laysan Island. US Department of Commerce, National Technical Information Service, Springfield, VA, PB-82-106113
25. Johnson BW, Johnson PA (1984) Observations of the Hawaiian monk seal on Laysan Island from 1977 through 1980. US Department of Commerce, NOAA Tech Memo NMFS, NOAA-TM-NMFS-SWFC-49, Honolulu, HI
26. Le Boeuf BJ, Mesnick S (1991) Sexual behavior of male northern elephant seals: lethal injuries to adult females. Behaviour 116:143-159
27. Le Galliard JF, Fitze FS, Ferriere R, Clobert J (2005) Sex ratio bias, male aggression, and population collapse in lizards. Proc Natl Acad Sci USA 102:18231-18236
28. Linklater WL, Cameron EZ, Minot EO, Stanfford KJ (1999) Stallion harassment and the mating system of horses. Anim Behav 58:295-306
29. McCowan B, Anderson K, Heagarty A, Cameron A (2008) Utility of social network analysis for primate behavioral management and well-being. Appl Anim Behav Sci 109: 396-405
30. National Marine Fisheries Service (2007) Recovery plan for the Hawaiian monk seal (Monachus schauinslandi), 2nd edn (revised). National Marine Fisheries Service, Silver Spring, MD
31. Starfield AM, Roth JD, Ralls K (1995) 'Mobbing' in Hawaiian monk seals (Monachus schauinslandi): the value of simulation modeling in the absence of apparently crucial data. Conserv Biol 9:166-174
32. Steifetten O, Dale S (2006) Viability of an endangered population of ortolan buntings: the effect of a skewed operational sex ratio. Biol Conserv 132:88-97
33. Westlake RL, Gilmartin WG (1990) Hawaiian monk seal pupping locations in the Northwestern Hawaiian Islands. Pac Sci 44:366-383
34. Wirtz WO II (1968) Reproduction, growth and development, and juvenile mortality in the Hawaiian monk seal. J Mammal 49:229-238