|Scientific Name:||Arctocephalus australis|
|Species Authority:||(Zimmermann, 1783)|
|Infra-specific Taxa Assessed:|
Arctophoca australis (Zimmermann, 1783)
|Taxonomic Notes:||In 2011 the genus of all Fur Seals other than Arctocephalus pusillus was changed from Arctocephalus to Arctophoca (Committee on Taxonomy 2011) based on evidence presented in Berta and Churchill (2012). However, in 2013, based on genetic evidence presented in Nyakatura and Bininda-Emonds (2012), this change was considered to be premature and these species were returned to the genus Arctocephalus pending further research (Committee on Taxonomy 2014).
In the past, two subspecies were recognized: Arctocephalus australis australis (Zimmerman, 1783) for the Falkland subpopulation and A. a. gracilis (Nehring, 1887) for the mainland subpopulation. Animals from the Falklands have been reported to be larger than animals from coastal South America (Rice 1998). However, the validity of these subspecies was disputed (Reijnders et al. 1993). In their review of pinniped taxonomy, Berta and Churchill (2012) concluded that the Fur Seals in Peru and northern Chile probably represent an unnamed subspecies. After examining all the morphological, genetic and distributional evidence, Oliveira and Brownell (2014) concluded that A. a. gracilis should be treated as a junior synonym of A. a. australis, and they supported the recognition of a Peru/northern Chile subspecies. This assessment combines the IUCN Red List assessments for the South American and Peruvian Fur Seal subspecies to assess the status of the South American Fur Seal as a species.
|Red List Category & Criteria:||Least Concern ver 3.1|
|Assessor(s):||Cárdenas-Alayza, S., Oliveira, L. & Crespo, E.|
|Reviewer(s):||Brownell Jr., R.L.|
|Contributor(s):||Oliva, D. & Sepúlveda, M.|
|Facilitator/Compiler(s):||Lowry, L., Ahonen, H., Pollock, C.M., Chiozza, F. & Battistoni, A.|
The total number of South American Fur Seals is estimated at about 238,000 and population size of the South American subspecies is likely increasing. The species does not meet any IUCN criteria for a threatened listing and should be listed as Least Concern. However, the Peruvian subspecies is much less abundant (about 21,000 total) and the IUCN Pinniped Specialist Group has listed it as Vulnerable.
|Previously published Red List assessments:|
|Range Description:||The South American subspecies is distributed along the western South Atlantic (southern Brazil, Uruguay, Argentina, and the Falkland Islands), and eastern South Pacific (southern Chile) coasts. On the Atlantic side, haulouts can be found along the coasts of Rio Grande do Sul in Brazil (approximately from 29º to 32º S) (Muelbert and Oliveira 2006, Oliveira 2013), although the northern limit for breeding colonies is at Islas del Castillo, Uruguay (34º21’S, 53º44’W). Throughout the coast of Argentina, breeding and non-breeding colonies continue to be found until Tierra del Fuego-Isla de los Estados at the extreme south, also including the Falkland Islands (Túnez et al. 2008, Crespo et al. 2015). Their distribution continues all around the southern tip of South America to the Pacific side, to Isla Guafo in southern Chile (43º33’S, 74º51’W) (Oliveira 2004). |
The Peruvian subspecies is distributed along the coast of Peru and northern Chile. In Peru they occur from Isla Mazorca (11° 20’S) to Ilo (17°42’S), with a small isolated colony occurring in northern Peru at Isla Foca (5° 20’S) (Oliveira et al. 2012). At the southern limit of Peru, colonies continue on the north coast of Chile (from 17°- 2° S) (Torres 1985, Guerra and Torres 1987), although the distribution of this species in Chile is now expanding to the South, reaching to 29°S (Sepúlveda, pers. comm.). Thus, the majority of the breeding population occurs in Peru from 15° to 17°S.
Native:Argentina; Brazil; Chile; Falkland Islands (Malvinas); Peru; Uruguay
|FAO Marine Fishing Areas:|
Atlantic – southwest; Pacific – southeast
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||Available data on South American Fur Seal abundance were compiled and reviewed in the 2016 IUCN Red List assessments for the two recognized subspecies. Estimates of the number of mature individuals, and population trend, for each of those subspecies were as follows:|
|Current Population Trend:||Increasing|
|Habitat and Ecology:||South American Fur Seals are sexually dimorphic. Adult males are approximately 1.3 times longer and 3.3 times heavier than adult females. Adult males can reach 2 m and 90–160 kg, and possibly 200 kg; females do not exceed 1.5 m long and weigh on average 60 kg. Males of the Peruvian subspecies are smaller than the South American subspecies and females are slightly larger (Oliveira et al. 2005, 2008a). Newborns are 50-65 cm and 3-7.5 kg (Vaz-Ferreira 1982, Punta San Juan Program unpublished data), with initial mass being significantly greater for male pups (Baladán Corbo 2012). Females reach their maximum reproductive value at 3-5 years old (Lima and Páez 1995, 1997). Their reproductive cycle has a duration of 11 months, with a 3-4 month embryonic diapause (Vaz Ferreira et al. 1982, Katz et al. 2013).|
Breeding takes place from late October through mid January (Majluf 1987a, Franco-Trecu 2005). Pupping peaks in mid November to mid December, and mating occurs 1-6 days after the female gives birth (Franco-Trecu 2005, Pavés and Schlatter 2008). Following birth, the mother suckles her pup and fasts on shore for almost 11 days (Franco-Trecu 2010). Then the female begins to make foraging trips punctuated by time attending the pup ashore, spending up to 4-5 days foraging at sea and 1-2 days feeding offspring at rookeries (Bastida and Rodriguez 2003). During the first three months of maternal care, duration of foraging trips by females is highly variable, which affects the survival of offspring since longer trips increase pup mortality (Franco-Trecu et al. 2010b).
Time spent on feeding trips and attending offspring likely varies with location, changes in marine productivity, and age of offspring, or a combination of these factors. Trip distances, trip durations and lengths of visits increase throughout the season. During the early lactation females perform short nocturnal foraging trips. Trip duration starts increasing during mid-lactation, but the majority of foraging effort still concentrates close to breeding sites. Later in the season, when pups are capable of withstanding longer fasts and metabolic demands of pregnancy and lactation are higher, females may stay at sea longer and forage in more distant prey patches (Thompson et al. 2003). In the Atlantic, the effects of El Niño-La Niña are less strong. Within the usual variability, the differences between years are relatively minor and the effects of the El Niño Southern Oscillation (ENSO) are relatively moderate. In the absence of drastic changes in the ecosystem, attendance patterns are not affected (Franco-Trecu 2010).
Colonies are generally found along rocky coasts, on ledges above the shoreline or in boulder strewn areas. Most areas utilized have some source of shade such as at the base of cliffs or under boulders, and easy access to the ocean or tidal pools (Stevens and Boness 2003). Around midday, Fur Seals make daily movements from high and dry levels of the rookeries to cool off in low and wet areas or in the sea (Cassini 2001, Vaz-Ferreira and Ponce de León 1984). During the reproductive season, these movements can often cause female aggression towards conspecifics, mostly at other females, in order to protect their new-born pups and maximize their offspring’s survival (Cassini 2001).
Males are polygynous and territorial, and fighting can result in serious wounds and scars (Cappozzo 1995). The number of breeding females associated with a territorial male varies between 3-6 in southern Chile (Pavés and Schlatter 2008) and 6-20 at Punta San Juan (Majluf 1987a). The highest number of territorial males at the colonies can be found in late December, decreasing in January (Franco-Trecu 2005, Franco-Trecu et al. 2014). Individual bulls can occupy territories for up to 60 days (Cappozzo 1995) until most of the females are mated, and then they leave their territories to start foraging at sea (Pavés and Schlatter 2008). Only a few adult males out of the total population achieve mating, and a large proportion is excluded to peripheral or male exclusive areas. In Uruguay, the breeding pattern is a "lek" system where females have extensive home ranges that overlap with the small territories of many males. Females move freely in the colony and males do not monopolize access to females (Franco-Trecu et al. 2014).
Most pup mortality take place at the beginning of the breeding season, during the peak of birthing (Franco-Trecu 2010). In general, the principal causes of death of South American Fur Seal pups are enteritis with microscopic lesions of bacteremia (associated with the presence of hookworms) (28%), and starvation, trauma, and drowning (63%) (Seguel et al. 2013). Locally, pup mortality is also caused by predation by adult male South American Sea Lions that can be significant at some colonies (Harcourt 1993). Maternal aggression was also recognized as an important source of mortality for Peruvian Fur Seals before the 1997-98 ENSO (Harcourt 1991,1992; Majluf 1992).
Based on satellite tracking data, South American Fur Seals apparently forage between 50 and 600 m with no clear water-depth preference, and mean duration of the female foraging trips during the breeding season is 126 hours (Thompson et al. 2003). Lactating females in Uruguay forage 41-185 km from the breeding sites (Vaz-Ferreira 1976, York et al. 1998). For the Peruvian Fur Seal, ENSO years have a negative impact on animals and during those years females must spend much more time attempting to forage, which affects offspring growth and survival (Majluf 1987a, Gentry and Kooyman 1987). During the 1983 ENSO, adult female Peruvian Fur Seals showed mean dives to 29 m, with a maximum of 170 m and mean duration of 2.5 minutes and maximum of 7 minutes (Majluf 1987b). During the 1997 ENSO, adult females had to spend longer periods at sea foraging (10-20 days) causing their pups to die of starvation.
The location of foraging grounds almost certainly depends on the distribution of preferred prey (Laptikhovsky 2009). The foraging area of the South American Fur Seals southwest of the Falkland Islands coincides with the region of the highest abundance of the Lobster Krill (Munida spp.), the most important food resource of Fur Seals off the Falklands (Laptikhovsky 2009). Seasonal variations in intensity and position of both the Falkland Current and Argentine Drift could also be a reason for seasonal changes in female foraging grounds (Thompson et al. 2003).
The Southern Fur Seal diet varies according to prey availability. Although they are trophic generalists with the potential to prey upon many species, a few species dominate their diet. Pelagic and demersal fishes and cephalopods are the most common prey (Vásquez 1995; Zavalaga et al. 1998, Arias-Schreiber 2000, 2003; Oliveira et al. 2008b, Vallejos 2010, Franco-Trecu et al. 2012, 2013, 2014).
|Continuing decline in area, extent and/or quality of habitat:||No|
|Generation Length (years):||11.7|
|Movement patterns:||Not a Migrant|
|Congregatory:||Congregatory (and dispersive)|
|Use and Trade:||Human subsistence hunting of South American Fur Seals undoubtedly began with first contact and continues today. Commercial exploitation began after the discovery of South American Fur Seals by Europeans in the 18th century. As an example, in 1775 the ship States from Boston, loaded 13,500 skins from the Falkland Islands area (Bonner 1982). A managed harvest was conducted in Uruguay, and between 1965 and 1991 (when harvesting ceased) 234,000 Fur Seals were harvested. Harvest levels generally declined in the 20th century bringing about the cessation of hunting at many locations (Ximenez and Languth 2002). In Peru, commercial harvests are believed to have reduced Fur Seal numbers to the point that it was thought that few, if any, Fur Seals were left by the late 20th Century (Majluf and Trillmich 1981, Muck and Fuentes 1987). That led to the banning of all sealing in 1959, and population numbers increased following protection.|
Development of large and small scale commercial fisheries have a negligible effect on South American Fur Seals in the Atlantic due to the minimal overlap between Fur Seal prey items and target commercial species (Crespo pers. comm.). In contrast, industrial fishing along the coast of Peru may threaten the pelagic resources on which Fur Seals depend. Those fisheries started in the 1950s and 1960s, and contributed to several declines in biomass of Anchoveta which is a major prey of Fur Seals (Pauly and Palomares 1989, Pauly and Tsukayama 1987).
Mortality due to bycatch and interactions is known to occur occasionally in artisanal and other fisheries (Maijluf et al. 2002, Franco-Trecu et al. 2009, De Maria 2012, Sepúlveda pers. comm., Cárdenas-Alayza unpublished data). Incidental captures of Fur Seals in shark nets have been reported in Uruguay (Scialabba 1989, Franco-Trecu et al. 2009).
During the 1970s and part of the 1980s, South American Fur Seals (and other wildlife) were hunted illegally in southern Chile and Argentina to bait traps set for Southern King Crab. Bait used between 1976 and 1980 was estimated as 200–400 tons per year (Cárdenas et al. 1987). Because this fishery is decreasing due to overexploitation, hunting pressure on the Fur Seal is being reduced. In Peru, Arias-Schreiber (1993) reported that it is common for some fishermen to kill and use pinnipeds as bait to catch saltwater Snails. However, the incidence of illegal Fur Seal catches and their impact on populations are not known.
The limited number of large, dense breeding aggregations could make this species particularly sensitive to the effects of oil spills and disease epidemics. Like other Fur Seals, South American Fur Seals are vulnerable to oil spills because of their dependence on their thick pelage for thermoregulation. In February 1997, 5,000 metric tons of crude oil were spilled from the vessel San Jorge onto on the coast of Isla de Lobos in southern Uruguay. Nearly 5,000 South American Fur Seal pups (2-3 months old) were heavily oiled and/or died (Mearns et al. 1999).
With the breeding population located at a limited number of rookeries, human activities could have populations consequences if disturbance occurs (Cárdenas-Alayza 2012).
|Conservation Actions:||South American Fur Seals are protected and managed by laws in most of the countries where they occur. In Peru it is illegal to poach, export, or transport Fur Seals for commercial purposes (Decreto Supremo No. 013-99-AG). The catastrophic decline that followed the 1997-1998 ENSO led to South American Fur Seals being categorized as in danger of extinction in Peru (Decreto Supremo No. 034-2004-AG), and this decree was recently revised and Fur Seals remain in the same category (Decreto Supremo No. 004-2014-MINAGRI). In Chile, the status of total protection was given to all Arctocephalus species in 1978 (Torres 1987, Reijnders et al. 1993), and in 1995 the protection was extended for 30 years (Decreto Supremo No. 225-Subsecretaría de Pesca; Sielfeld 1999). In Argentina, marine mammals are under the administration of the provinces. At the Falkland Islands, Fur Seals are protected by British law. In Brazil, all the pinniped species have been protected by law since 1986 (Portaria SUDEPE n0 N-11, de 21-02-1986) and also by the National Action Plans for Conservation of Brazilian Aquatic Mammals (IBAMA 2001, Rocha-Campos et al. 2011). In Uruguay, the South American Fur Seal was named as a focal object of conservation in the Marine Protected Area of Cabo Polonio by the National System of Protected Areas. South American Fur Seals have also been afforded protection by the establishment of numerous reserves and marine protected areas, including privately owned sites.|
Arias-Schreiber, M. 1993. Interacciones entre lobos marinos (Fam.Otariidae) y la pesquería artesanal en el puerto de San Juan de Marcona, Perú. BSc. Thesis, Universidad Agraria La Molina, Lima.
Arias-Schreiber, M. 2000. Los lobos marinos y su relación con la abundancia de la anchoveta peruana durante 1979-2000. Boletín del Instituto del Mar del Perú 19: 133-138.
Arias-Schreiber, M. 2003. Prey spectrum and feeding behaviour of two sympatric pinnipeds (Arctocephalus australis and Otaria flavescens) in relation to the 1997/98 ENSO in southern Peru. MSc Thesis, University of Bremen.
Baladán, C.A. 2012. Dimorfismo sexual en el crecimiento y comportamiento de Arctocephalus australis durante los tres primeros meses de vida. Universidad de la República Uruguay.
Bastida, R. and Rodríguez, D. 2003. Mamíferos Marinos de Patagonia y Antartida. Vazquez Mazzini Editores, Buenos Aires.
Berta, A. and Churchill, M. 2011. Pinniped taxonomy: review of currently recognized species and subspecies, and evidence used for their description. Mammal Review 42: 207-234.
Berta, A. and Churchill, M. 2012. Pinniped taxonomy: review of currently recognized species and subspecies, and evidence used for their description. Mammal Review 42: 207-234.
Bonner, W. N. 1982. Seals and man: A study of interactions. University of Washington Press.
Cappozzo, H.L. 1995. Comportamiento Reproductivo en dos Especies de Otáridos de América del Sur. Tesis de Doctorado, Universidad de Buenos Aires, Buenos Aires, Argentina.
Cárdenas-Alayza, S. 2012. Prey abundance and population dynamics of South American fur seals (Arctocephalus australis) in Peru. MSc. dissertation, University of British Columbia, Vancouver.
Cárdenas, J.C., Oporto, Y., Stutzin, M. and Gibbons, J. 1987. Impact of the crab fishery (Lithodes antarctica) and snow crabs (Paralomis granulosa) on populations of cetaceans and pinnipeds of Magallanes, Chile. Proposiciones para una política de conservación y manejo. Anais da 2a. Reuniao de Trabalho de Especialistas em Mamíferos Aquáticos da América do Sul:32–36. Available from SOLAMAC at http://www.solamac.org/.
Cassini, M.H. 2001. Aggression between females of the Southern Fur Seal (Arctocephalus australis) in Uruguay. Mammal Review 31(2): 169-172.
Committee on Taxonomy. 2011. List of marine mammal species and subspecies. Society for Marine Mammalogy. Available at: https://www.marinemammalscience.org/species-information/list-of-marine-mammal-species-subspecies/. (Accessed: 10 January 2012).
Committee on Taxonomy. 2014. List of marine mammal species and subspecies. Society for Marine Mammalogy. Available at: https://www.marinemammalscience.org/species-information/list-of-marine-mammal-species-subspecies/. (Accessed: 4 February 2014).
Crespo, E.A., Schiavini, A.C.M., García, N.A., Franco-Trecu, V., Goodall, R.N.P., Rodriguez, D., Morgante, J.S. and Oliveira, L.R. de. 2015. Status, population trend and genetic structure of South American fur seals, Arctocephalus australis, in southwestern Atlantic waters. Marine Mammal Science 31: 866-890.
De María, M., Golluchi, M., Szteren, D. 2012. Registros de Arctocephalus australis (Carnivora Mammalia) interaccionando con la pesca artesanal en Uruguay. Boletín de la Sociedad Zoológica del Uruguay (2a época) 21(1-2): 50-58.
de Oliveira, L.R. and Brownell Jr., R.L. 2014. Taxonomic status of two subspecies of South American fur seals: Arctocephalus australis australis vs. A. a. gracilis. Marine Mammal Science: DOI: 10.1111/mms.12098.
Franco-Trecu, V. 2005. Comportamiento maternal y aspectos reproductivos de Arctocephalus australis en Isla de Lobos - Uruguay. Universidad de la República.
Franco-Trecu, V. 2010. Éxito de crianza y hábitos alimenticios en hembras del lobo fino sudamericano (Arctocephalus australis) y su relación trófica con hembras del león marino sudamericano (Otaria flavescens). Universidad de la República.
Franco-Trecu V., Aurioles D., Lima M. and Arím M. 2012. Prepartum and postpartum trophic segregation between sympatrically breeding female Arctocephalus australis and Otaria flavescens. Journal of Mammalogy 93: 514-521.
Franco-Trecu V., Aurioles-Gamboa, D. and Inchausti, P. 2014. Individual trophic specialisation and niche segregation explain the contrasting population trends of two sympatric otariids. Marine Biology 161(3): 609-618.
Franco-Trecu V., Costa P., Abud C., Dimitriadis C., Laporta P., Passadore C. and Szephegyi M. 2009. By-catch of franciscana (Pontoporia blainvillei) in Uruguayan artisanal gillnet fisheries: an evaluation after a twelve-year gap in data collection. Latin American Journal of Aquatic Mammals 7(1-2): 11-22.
Franco-Trecu, V., Drago, M., Riet-Sapriza, F.G., Parnell, A., Frau, R. and Inchasuti, P. 2013. Bias in diet determination: Incorporating traditional methods in Bayesian mixing models. Plos ONE 8(11): e80019.
Franco-Trecu, V., Tassino, B. and Páez, E. 2010b. Comportamiento maternal de Arctocephalus australis, en Isla de Lobos-Uruguay. Revista de Etología 9(1): 29-40.
Franco-Trecu, V., Tassino, B. and Soutullo, A. 2010a. Allo-suckling in the South American fur seal (Arctocephalus australis) in Isla de Lobos, Uruguay: cost or benefit of living in a group? Ethology Ecology and Evolution 22(2): 143-150.
Gentry, R.L. and Kooyman, G.L. 1986. Fur seals: Maternal strategies on land and at sea. Princeton University Press, Princeton, NJ.
Guerra, C.C. and Torres, D.N. 1987. Presence of South American fur seal, Arctocephalus australis, in northern Chile. In: J.P. Croxall and R.L. Gentry (eds), Proceedings of the International Symposium and Workshop: Status, Biology and Ecology of Fur Seals, Cambridge, UK 23-27 April 1984, pp. 169-176.
Harcourt, R. 1991. Maternal aggression in the South American fur seal in Peru. Canadian Journal of Zoology 70: 320-325.
Harcourt, R. 1992. Factors affecting early mortality in the South American fur seal (Arctocephalus australis) in Peru: density-related effects and predation. Journal of Zoology, London 226: 259-270.
Harcourt, R. 1993. Individual variation in predation on fur seals by southern sea lions (Otaria byronia) in Peru. Canadian Journal of Zoology 71(9): 1908-1911.
IBAMA. 2001. Mamiferos aquaticos do Brasil: Plano de Acao – versao II. Brasilia, Brazil.
IUCN. 2016. The IUCN Red List of Threatened Species. Version 2016-1. Available at: www.iucnredlist.org. (Accessed: 30 June 2016).
Katz, H., Pessina, P. and Franco-Trecu, V. 2013. Serum progesterone concentration in female South American fur seals (Arctophoca australis) during the breeding season. Aquatic Mammals 39(3): 290-295.
Laptikhovsky, V. 2009. Oceanographic factors influencing the distribution of South American fur seal, Arctocephalus australis around the Falkland Islands before the breeding season. Journal of the Marine Biological Association of the United Kingdom 89(8): 1597.
Lima, M. and Páez, E. 1995. Growth and reproductive patterns in the South American fur seal. Journal of Mammalogy 76(4): 1249-1255.
Lima, M. and Páez, E. 1997. Demography and population dynamics of South American fur seals using projection matrix models. Journal of Mammalogy 78(3): 914-920.
Majluf, P. 1987a. Reproductive ecology of female South American fur seals at Punta San Juan, Peru. PhD Thesis, University of Cambridge, Cambridge.
Majluf, P. 1987b. South American fur seal, Arctocephalus australis, in Peru. NOAA Technical Report NMFS 51: 33-35.
Majluf, P. 1992. Timing of births and juvenile mortality in the South American fur seal in Peru. Journal of Zoology 227: 367-383.
Majluf, P. and Trillmich, F. 1981. Distribution and abundance of sea lions (Otaria byronia) and fur seals (Arctocephalus australis) in Peru. Saugtierk 46: 384-393.
Majluf, P., Babock, E., Riveros J.C., Arias, M. and Alderete, W. 2002. Catch and Bycatch of Sea Birds and Marine Mammals in the Small-Scale Fishery of Punta San Juan, Peru. Conservation Biology 16(5): 1333-1343.
Mearns, A., Levine, E., Yender, E., Helton, D. and Loughlin, T. 1999. Protecting Fur Seals During Spill Response: Lessons from the San Jorge (Uruguay) Oil Spill. International Oil Spill Conference.
Muck, P. and Fuentes, H. 1987. Sea lion and fur seal predation on the Peruvian anchoveta, 1953-1982. In: D. Pauly and I. Tsukayama (eds), The Peruvian Anchoveta and its Upwelling Ecosystem: Three Decades of Change, IMARPE-GTZ-ICLARM, Lima.
Muelbert, M.M.C. and Oliveira, L.R. de. 2006. First records of stranded pregnant female South American fur seals, Arctocephalus australis, in the southern Brazilian coast. Latin American Journal of Aquatic Mammals 5(1): 67-68.
Nyakatura, K. and Bininda-Emonds, O.R.P. 2012. Updating the evolutionary history of Carnivora (Mammalia): a new species-level supertree complete with divergence time estimates. BMC Biology 10: 12.
Oliveira, L.R. 2004. Variação geográfica do lobo-marinho sulamericano, Arctocephalus australis (Zimmermann, 1783) com base em dados morfológicos e moleculares. PhD thesis, Universidade de São Paulo.
Oliveira, L.R. 2013. Canívoros Marinhos. In: M.M. Weber, C. Roman, N.C. Cáceres (ed.), Mamíferos do Rio Grande do Sul, pp. 405-427.
Oliveira, L.R. and Brownell Jr., R.L. 2014. Taxonomic status of two subspecies of South American fur seals: Arctocephalus australis australis vs. A. a. gracilis. Marine Mammal Science 30: 1258-1263.
Oliveira, L.R., Hingst-Zaher, E. and Morgante J.S. 2005. Size and shape sexual dimorphism in the skull of the South American fur seal, Arctocephalus australis (Zimmermann, 1783) (Carnivora: Otariidae). Latin American Journal of Aquatic Mammals 4: 27-40.
Oliveira, L.R., Hoffman, J.I., Hingst-Zaher, E., Majluf, P., Muelbert, M.M.C., Morgante J.S. and Amos, W. 2008a. Morphological and genetic evidence for two evolutionarily significant units (ESUs) in the South American fur seal, Arctocephalus australis. Conservation Genetics 91451-1466.
Oliveira, L.R., Lopes, F.R.V., Almeida, R., Cárdenas, S., Márquez, J.C., García, D., Bonatto, S.L. 2012. Status Taxonomico dos lobos-marinhos de Isla Foca (Peru): Arctocephalus australis, A. galapagoensis (CARNIVORA: OTARIIDAE) ou híbridos? 15va Reunión de Trabajo de Expertos en Mamíferos Acuáticos de América del Sur. 9no. Congreso SOLAMAC. 16-20 Setiembre, Puerto Madryn, Argentina.
Oliveira, L.R., Ott, P.H., Malbarba, L.R. 2008b. Ecologia alimentar dos pinípedes do sul do Brasil e uma avaliação de suas interações com atividades pesqueiras. In: N. Furtado (ed.), Ecologia de Mamíferos, pp. 97-116.
Pacifici, M., Santini, L., Di Marco, M., Baisero, D., Francucci, L., Grottolo Marasini, G., Visconti, P. and Rondinini, C. 2013. Generation length for mammals. Nature Conservation 5: 87–94.
Pauly, D. and Palomares, M. 1989. New estimates of monthly biomass recruitment and related statistics of anchoveta (Engraulis ringens) off Peru (4-14S), 1953-1985. In: D. Pauly, P. Muck, J. Mendo and I. Tsukayama (eds), The Peruvian Upwelling Ecosystem: Dynamics and Interactions, IMARPE-GTZ-ICLARM.
Pauly, D. and Tsukayama, I. 1987. The Peruvian Anchoveta and its Upwelling Ecosystem: Three Decades of Change. 1987. The Peruvian Anchoveta and its Upwelling Ecosystem: Three Decades of Change. IMARPE-GTZ-ICLARM.
Pavés, H.J. and Schlatter, R.P. 2008. Temporada reproductiva del lobo fino austral, Arctocephalus australis (Zimmerman, 1783) en la Isla Guafo, Chiloé, Chile. Revista Chilena de Historia Natural, pp. 137-149.
Reijnders, P., Brasseur, S., van der Toorn, J., van der Wolf, P., Boyd, I., Harwood, J., Lavigne, D. and Lowry, L. 1993. Seals, fur seals, sea lions, and walrus. Status survey and conservation action plan. IUCN Seal Specialist Group.
Rice, D.W. 1998. Marine Mammals of the World: Systematics and Distribution. Society for Marine Mammalogy, Lawrence, Kansas.
Rocha-Campos, C., Moreno, I.B., Rocha, J.M., Palazzo, J.T. Jr., Karina R.G., Oliveira, L.R., Gonçalves, L., Dalla Rosa, L., Emgel, M., Marcondes, M.C.C., Muelbert, M.M., Ott, P.H., Silva, V.M.F. 2011. Plano de ação nacional para conservação dos mamíferos aquáticos - grandes cetáceos e pinípedes.. 1. ed. Brasília: INSTITUTO CHICO MENDES DE CONSERVAÇÃO DA BIODIVERSIDADE, v. 1. .
Scialabba, N. 1989. World review of marine mammal entanglement in fishing gear and plastic marine debris. Food and Agriculture Organization, Rome.
Seguel, M., Pavés, H., Paredes, E. and Schlatter, R. 2013. Causes of mortality in South American fur seal pups (Arctophoca australis gracilis) at Guafo Island, southern Chile (2004-2008). Marine Mammal Science 29: 36-47.
Sielfeld, W. 1999. Estado del conocimiento sobre conservación y preservación de Otaria flavescens (Shaw, 1800) y Arctocephalus australis (Zimmermann, 1783) en las costas de Chile. Estudios Oceanológicos 18: 81-96.
Stevens, M. and Boness, D. 2003. Influences of habitat features and human disturbance on use of breeding sites by a declining population of southern fur seals (Arctocephalus australis). Journal of Zoology 260: 145-152.
Thompson, D., Moss, S.E.W. and Lovell, P. 2003. Foraging behaviour of South American fur seals Arctocephalus australis: extracting fine scale foraging behaviour from satellite tracks. Marine Ecology Progress Series 260: 285-296.
Torres, D.N. 1987. Juan Fernández fur seal, Arctocephalus philippii. In: J.P. Croxall and R.L. Gentry (eds), Status, biology, and ecology of fur seals, pp. 37-41. National Oceanic and Atmospheric Administation Technical Report, National Marine Fisheries Service No. 51.
Túnez, J.I., Cappozzo, H.L. and Cassini, M.H. 2008. Natural and anthropogenic factors associated with the distribution of South American sea lions along the Atlantic coast of South America. Hydrobiologia 589(1): 191-202.
Vallejos, A. 2010. Dieta del lobo fino austral, Arctocephalus australis (Zimmermann, 1783), en Isla Guafo. Seminario de Título, Departamento de Acuicultura y Recursos Acuáticos, Universidad de los Lagos, Chile.
Vásquez, P. 1995. Determinación de los hábitos alimentarios de Arctocephalus australis y Otaria byronia en Punta San Juan de Marcona, Ica, Perú. MSc. thesis, Universidad Nacional Agraria La Molina, Lima.
Vaz-Ferreira, R. 1976. Arctocephalus australis (Zimmermann) South American fur seal. Advisory Committee on Marine Resources Research:1–13.
Vaz-Ferreira, R. 1982. Arctocephalus australis Zimmermann, South American fur seal. Mammals in the Seas, Vol. IV: Small cetaceans, seals, sirenians and otters, pp. 497-508. FAO Fisheries Ser. 5.
Vaz-Ferreira, R. and Ponce de Leon, A. 1984. South American fur seal, Arctocephalus australis, in Uruguay. In: J. P. Croxall and R. L. Gentry (eds), Status, biology, and ecology of fur seals. Proceedings of an international workshop. Cambridge, England. April 1984, pp. 29-32. National Oceanic and Atmospheric Administration Technical Report National Marine Fisheries Service 51, Cambridge, UK.
Ximenez, I.M., and Langguth, E. 2002. Isla de Lobos. Graphis ??
York, A., Lima, M., Ponce de León, A., Malek, A., and Páez, E. 1998. First description of diving behavior of female South American fur seals in Uruguay. World Marine Mammal Science Conference, Monaco.
Zavalaga, C., Paredes, R. and Arias-Schreiber, M. 1998. Dieta del lobo fino (Arctocephalus australis) y del lobo chusco (Otaria byronia) en la costa sur del Perú, en febrero de 1998. Informe Progresivo del Instituto del Mar del Perú 79: 3-16.
|Citation:||Cárdenas-Alayza, S., Oliveira, L. & Crespo, E. 2016. Arctocephalus australis. The IUCN Red List of Threatened Species 2016: e.T2055A45223529.Downloaded on 23 July 2016.|
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