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<document id="6242C1E6A24C623323700C1D8484F140" ID-CLB-Dataset="62717" ID-DOI="10.5281/zenodo.6604474" ID-GBIF-Dataset="0ec081dc-b7e4-4a2a-a019-b957fe21087b" ID-ISBN="978-84-96553-93-4" ID-Zenodo-Dep="6604474" IM.metadata_requiresApprovalFor="plazi" IM.taxonomicNames_requiresApprovalFor="plazi" checkinTime="1654112126101" checkinUser="diego" docAuthor="Russell A. Mittermeier &amp; Don E. Wilson" docDate="2014" docId="965C87FE1E5F564B99C093968C90FDA1" docLanguage="en" docName="hbmw_4_Otariidae_0034.pdf.imf" docOrigin="Handbook of the Mammals of the World Volume 4 Sea Mammals, Barcelona: Lynx Edicions" docTitle="Arctocephalus philippii" docType="treatment" docVersion="10" lastPageNumber="90" masterDocId="6A65FF861E5C564F9C7E926A8E54FFA3" masterDocTitle="Otariidae" masterLastPageNumber="101" masterPageNumber="34" pageNumber="90" updateTime="1699339439108" updateUser="ExternalLinkService">
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<mods:title id="BC8C0F534FA95B2DE7BD9E789C3DADA7">Otariidae</mods:title>
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<mods:namePart id="78753C73E6ADA0FCE8CF95A1337E292B">Russell A. Mittermeier</mods:namePart>
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<mods:namePart id="D5EB2BFB78AF60A747AA8241D35B9F6F">Don E. Wilson</mods:namePart>
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<mods:title id="ADF6DA077224A41B6528F40478A0C8BD">Handbook of the Mammals of the World Volume 4 Sea Mammals</mods:title>
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<treatment id="965C87FE1E5F564B99C093968C90FDA1" ID-DOI="http://doi.org/10.5281/zenodo.6604427" ID-GBIF-Taxon="195723748" ID-Zenodo-Dep="6604427" LSID="urn:lsid:plazi:treatment:965C87FE1E5F564B99C093968C90FDA1" httpUri="http://treatment.plazi.org/id/965C87FE1E5F564B99C093968C90FDA1" lastPageId="4" lastPageNumber="90" pageId="3" pageNumber="90">
<subSubSection id="56EF65631E5F564C99C093968B8AFD89" box="[1470,1502,508,554]" pageId="3" pageNumber="90" type="multiple">
<paragraph id="1E4A36E81E5F564C99C093968B8AFD89" blockId="3.[1468,2607,508,596]" box="[1470,1502,508,554]" pageId="3" pageNumber="90">
<heading id="450281841E5F564C99C093968B8AFD89" box="[1470,1502,508,554]" pageId="3" pageNumber="90">
<figureCitation id="86CE2A6D1E5F564C99C093968B8AFD89" box="[1470,1502,508,554]" captionStart="Plate 1: Otariidae" captionStartId="2.[96,126,3408,3429]" captionTargetBox="[12,2749,13,3652]" captionTargetPageId="1" captionText="1. Northern Fur Seal (Callorhinus ursinus), 2. Antarctic Fur Seal (Arctocephalus gazella), 3. Juan Fernandez Fur Seal (Arctocephalus philippii), 4. Guadalupe Fur Seal (Arctocephalus townsendi), 5. Galapagos Fur Seal (Arctocephalus galapagoensis), 6. South American Fur Seal (Arctocephalus australis), 7. New Zealand Fur Seal (Arctocephalus forsteri), 8. Subantarctic Fur Seal (Arctocephalus tropicalis), 9. Afro-Australian Fur Seal (Arctocephalus pusillus)" figureDoi="http://doi.org/10.5281/zenodo.6604520" httpUri="https://zenodo.org/record/6604520/files/figure.png" pageId="3" pageNumber="90">3.</figureCitation>
</heading>
</paragraph>
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<subSubSection id="56EF65631E5F564C9998939689A4FD89" box="[1510,2032,508,554]" pageId="3" pageNumber="90" type="vernacular_names">
<paragraph id="1E4A36E81E5F564C9998939689A4FD89" blockId="3.[1468,2607,508,596]" box="[1510,2032,508,554]" pageId="3" pageNumber="90">
<heading id="450281841E5F564C9998939689A4FD89" box="[1510,2032,508,554]" pageId="3" pageNumber="90">
<vernacularName id="90F646C61E5F564C9998939689A4FD89" box="[1510,2032,508,554]" pageId="3" pageNumber="90">Juan Fernandez Fur Seal</vernacularName>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="56EF65631E5F564C944B93968785FD89" box="[2101,2513,508,554]" pageId="3" pageNumber="90" type="nomenclature">
<paragraph id="1E4A36E81E5F564C944B93968785FD89" blockId="3.[1468,2607,508,596]" box="[2101,2513,508,554]" pageId="3" pageNumber="90">
<heading id="450281841E5F564C944B93968785FD89" box="[2101,2513,508,554]" pageId="3" pageNumber="90">
<taxonomicName id="D9F54D6B1E5F564C944B93968785FD89" ID-CoL="5W433" baseAuthorityName="Peters" baseAuthorityYear="1866" box="[2101,2513,508,554]" class="Mammalia" family="Otariidae" genus="Arctocephalus" kingdom="Animalia" order="Carnivora" pageId="3" pageNumber="90" phylum="Chordata" rank="species" species="philippii">
<emphasis id="2C81EAFA1E5F564C944B93968785FD89" box="[2101,2513,508,554]" italics="true" pageId="3" pageNumber="90">Arctocephalus philippii</emphasis>
</taxonomicName>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="56EF65631E5F564C99C39056847BFDF2" box="[1469,2607,572,593]" pageId="3" pageNumber="90" type="vernacular_names">
<paragraph id="1E4A36E81E5F564C99C39056847BFDF2" blockId="3.[1468,2607,508,596]" box="[1469,2607,572,593]" pageId="3" pageNumber="90">
<heading id="450281841E5F564C99C39056847BFDF2" box="[1469,2607,572,593]" pageId="3" pageNumber="90">
<emphasis id="2C81EAFA1E5F564C99C39056885DFDF2" bold="true" box="[1469,1545,572,593]" pageId="3" pageNumber="90">French:</emphasis>
<vernacularName id="90F646C61E5F564C9A6C90568946FDF2" box="[1554,1810,572,593]" pageId="3" pageNumber="90">Otarie de Juan-Fernandez</vernacularName>
/
<emphasis id="2C81EAFA1E5F564C9B59905689D6FDF2" bold="true" box="[1831,1922,572,593]" pageId="3" pageNumber="90">German:</emphasis>
<vernacularName id="90F646C61E5F564C9BF490568621FDF2" box="[1930,2165,572,593]" pageId="3" pageNumber="90">Juan-Fernandez-Seebar</vernacularName>
/
<emphasis id="2C81EAFA1E5F564C94F7905686B0FDF2" bold="true" box="[2185,2276,572,593]" pageId="3" pageNumber="90">Spanish:</emphasis>
<vernacularName id="90F646C61E5F564C94909056847BFDF2" box="[2286,2607,572,593]" pageId="3" pageNumber="90">Lobo marino de Juan Fernandez</vernacularName>
</heading>
</paragraph>
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<subSubSection id="56EF65631E5F564C94549015843BFD03" box="[2090,2671,639,672]" pageId="3" pageNumber="90" type="reference_group">
<paragraph id="1E4A36E81E5F564C94549015843BFD03" blockId="3.[2090,2673,639,1066]" box="[2090,2671,639,672]" pageId="3" pageNumber="90">
<emphasis id="2C81EAFA1E5F564C945490158692FD03" bold="true" box="[2090,2246,639,672]" pageId="3" pageNumber="90">Taxonomy.</emphasis>
<taxonomicName id="D9F54D6B1E5F564C94A29015843EFD03" authority="Peters, 1866" authorityName="Peters" authorityYear="1866" box="[2268,2666,639,672]" class="Mammalia" family="Otariidae" genus="Otaria" kingdom="Animalia" order="Carnivora" pageId="3" pageNumber="90" phylum="Chordata" rank="species" species="philippii">Otaria philippii Peters, 1866</taxonomicName>
,
</paragraph>
</subSubSection>
<subSubSection id="56EF65631E5F564C945590CC87EAFCB5" pageId="3" pageNumber="90" type="materials_examined">
<paragraph id="1E4A36E81E5F564C945590CC87EAFCB5" blockId="3.[2090,2673,639,1066]" pageId="3" pageNumber="90">
<materialsCitation id="AE9D3CB51E5F564C945590CC87EAFCB5" ID-GBIF-Occurrence="3800731301" pageId="3" pageNumber="90">“Insel Juan Fernandez.” Restricted by V. B. Scheffer in 1958 to “Isla Mas a Tierra, Islas Juan Fernandez, Chile.”</materialsCitation>
</paragraph>
</subSubSection>
<subSubSection id="56EF65631E5F564C94559176880DFBF2" pageId="3" pageNumber="90" type="discussion">
<paragraph id="1E4A36E81E5F564C94559176843AFB89" blockId="3.[2090,2673,639,1066]" pageId="3" pageNumber="90">
It is estimated that A.
<taxonomicName id="D9F54D6B1E5F564C95CB91768477FC9E" authorityName="Peters" authorityYear="1866" box="[2485,2595,796,829]" class="Mammalia" family="Otariidae" genus="Otaria" kingdom="Animalia" order="Carnivora" pageId="3" pageNumber="90" phylum="Chordata" rank="species" species="philippii">philippii</taxonomicName>
and A. townsend: diverged from a common ancestor ¢.300,000 years ago. In a recent review in 2012, A. Berta and M. Chrurchill lumped both taxa in a single species with two subspecies, but most marine mammalogists have not adopted this proposal.
</paragraph>
<paragraph id="1E4A36E81E5F564C99C3965E880DFBF2" blockId="3.[1467,2676,1076,3469]" box="[1469,1625,1076,1105]" pageId="3" pageNumber="90">Monotypic.</paragraph>
</subSubSection>
<subSubSection id="56EF65631E5F564C99C2960A8884FB03" pageId="3" pageNumber="90" type="distribution">
<caption id="4A8A66601E5F564C99C2960A8884FB03" ID-DOI="http://doi.org/10.5281/zenodo.6604486" ID-Zenodo-Dep="6604486" httpUri="https://zenodo.org/record/6604486/files/figure.png" inLine="true" pageId="3" pageNumber="90" targetBox="[1471,2062,643,1057]" targetPageId="3">
<paragraph id="1E4A36E81E5F564C99C2960A8884FB03" blockId="3.[1467,2676,1076,3469]" pageId="3" pageNumber="90">
<emphasis id="2C81EAFA1E5F564C99C2960A8838FBDA" bold="true" box="[1468,1644,1120,1145]" pageId="3" pageNumber="90">Distribution.</emphasis>
S Pacific, in Juan Fernandez Is and San Félix I (Desventuradas Is), which lie 600 km to the N.
</paragraph>
</caption>
</subSubSection>
<subSubSection id="56EF65631E5F564C99C296C086C3F8C6" pageId="3" pageNumber="90" type="description">
<paragraph id="1E4A36E81E5F564C99C296C086C3F8C6" blockId="3.[1467,2676,1076,3469]" pageId="3" pageNumber="90">
<emphasis id="2C81EAFA1E5F564C99C296C088EDFB64" bold="true" box="[1468,1721,1194,1223]" pageId="3" pageNumber="90">Descriptive notes.</emphasis>
Total length 200 cm (males) and 120-140 cm (females); weight mean 140 kg (males) and c.48 kg (females). Newborns are ¢.65—68 cm and 6.2-6.9 kg. Dental formula I 3/2, C 1/1, PC 6/5 (x 2) = 36. Juan Fernandez Fur Seals are sexually dimorphic. Mature males are c.1-4 times the length and c.3 times the weight of mature females. Pale vibrissae are of medium length, and ear pinnae are long and conspicuous. Shape of crown and forehead on males is fairly round. Muzzle is straight and long, tapering to fleshy nose (rhinarium) that is large and slightly bulbous toward tip. Mane of longer fur reaches from shoulders to head, where long guard hairs emphasize crown and forehead. Neck, chest, and shoulders are broad. Adult females, subadults, and juveniles also have long tapering muzzles, but their noses are smaller, giving muzzles more pointed appearance. Flippers have dark, sparse, short fur that extends beyond wrists and ankles onto dorsal surface of flippers that are otherwise covered in black leathery skin. Juan Fernandez Fur Seals have thick coats that sport dense underfur. Adult males are dark gray-brown to blackish-gray. Mane may appear as grizzled cape due to guard hairs on sides and neck, tipped in cream-to-auburn color. Adult females, subadults, and juveniles are dark brown to blackish-gray above and buff or cream-colored below. All Juan Fernandez Fur Seals may be light tan to ruddy brown on muzzle and face. Neonates have thick black coat.
</paragraph>
</subSubSection>
<subSubSection id="56EF65631E5F564C99C295018405F789" pageId="3" pageNumber="90" type="biology_ecology">
<paragraph id="1E4A36E81E5F564C99C295018405F789" blockId="3.[1467,2676,1076,3469]" pageId="3" pageNumber="90">
<emphasis id="2C81EAFA1E5F564C99C295018878F82F" bold="true" box="[1468,1580,1899,1932]" pageId="3" pageNumber="90">Habitat.</emphasis>
Away from coastal island waters into deep oceanic areas. Favored terrestrial habitats to haul out and for breeding are rugged volcanic shorelines, cliffs, and boulders. Suspected predators include Killer Whales (Orcinus orca), blue sharks (Prionace glauca), great white sharks (Carcharodon carcharias), and possibly Leopard Seals (Hydrurga leptonyx) that occasionally make it as far north as the Juan Fernandez Islands.
</paragraph>
</subSubSection>
<subSubSection id="56EF65631E5F564C99C29A5A89E5F76B" pageId="3" pageNumber="90" type="food_feeding">
<paragraph id="1E4A36E81E5F564C99C29A5A89E5F76B" blockId="3.[1467,2676,1076,3469]" pageId="3" pageNumber="90">
<emphasis id="2C81EAFA1E5F564C99C29A5A8897F7F2" bold="true" box="[1468,1731,2096,2129]" pageId="3" pageNumber="90">Food and Feeding.</emphasis>
Juan Fernandez Fur Seals feed nocturnally on vertically migrating prey. Lanternfish (
<taxonomicName id="D9F54D6B1E5F564C9ABA9A36892AF7DA" authorityName="T.N.Gill" authorityYear="1893" box="[1732,1918,2140,2169]" class="Actinopterygii" family="Myctophidae" kingdom="Animalia" order="Myctophiformes" pageId="3" pageNumber="90" phylum="Chordata" rank="family">Myctophidae</taxonomicName>
) and squid are the most important prey items. Their diet is not as diverse as other species of otariids, likely the result of low productivity in their offshore marine environment.
</paragraph>
</subSubSection>
<subSubSection id="56EF65631E5F564C99C29AA48439F5F1" pageId="3" pageNumber="90" type="breeding">
<paragraph id="1E4A36E81E5F564C99C29AA48439F5F1" blockId="3.[1467,2676,1076,3469]" pageId="3" pageNumber="90">
<emphasis id="2C81EAFA1E5F564C99C29AA48817F74C" bold="true" box="[1468,1603,2254,2287]" pageId="3" pageNumber="90">Breeding.</emphasis>
The Juan Fernandez Fur Seal has the same general polygynous breeding system as described for the Northern Fur Seal (
<taxonomicName id="D9F54D6B1E5F564C94239A938732F6B5" baseAuthorityName="Linnaeus" baseAuthorityYear="1758" box="[2141,2406,2297,2326]" class="Mammalia" family="Otariidae" genus="Callorhinus" kingdom="Animalia" order="Carnivora" pageId="3" pageNumber="90" phylum="Chordata" rank="species" species="ursinus">Callorhinus ursinus</taxonomicName>
). For the Juan Fernandez Fur Seal, the breeding season extends from mid-November through January, and rookeries are abandoned by early September or October. Male Juan Fernandez Fur Seals defend small territories that average 36 m?and hold an average four females. Males may hold larger territories in shallow waters off the rookery. Lactating females leave on their first foraging trip c.11 days after giving birth. Although some trips may last only a single day, on average females stay away for 12-3 days, up to the maximum recorded 25 days, both being the longest for any otariid. Average length of time a female stays ashore to nurse her young is 5-3 days. Young are weaned in 7-10 months.
</paragraph>
</subSubSection>
<subSubSection id="56EF65631E5F564C99C598328837F4B4" pageId="3" pageNumber="90" type="activity">
<paragraph id="1E4A36E81E5F564C99C598328837F4B4" blockId="3.[1467,2676,1076,3469]" pageId="3" pageNumber="90">
<emphasis id="2C81EAFA1E5F564C99C5983288F3F5DA" bold="true" box="[1467,1703,2648,2681]" pageId="3" pageNumber="90">Activity patterns.</emphasis>
While at sea, Juan Fernandez Fur Seals groom, rest, and feed as described for the Antarctic Fur Seal. Despite foraging in deep oceanic water, average dive depth of the Juan Fernandez Fur Seal is only 12-3 m, with an average duration of 51 seconds, suggesting surface feeding. Deeper dives can be made to 90-100 m, lasting c.6 minutes.
</paragraph>
</subSubSection>
<subSubSection id="56EF65631E5F564C99C29977891EF389" pageId="3" pageNumber="90" type="biology_ecology">
<paragraph id="1E4A36E81E5F564C99C29977891EF389" blockId="3.[1467,2676,1076,3469]" pageId="3" pageNumber="90">
<emphasis id="2C81EAFA1E5F564C99C2997786D7F49D" bold="true" box="[1468,2179,2845,2878]" pageId="3" pageNumber="90">Movements, Home range and Social organization.</emphasis>
Adult female Juan Fernandez Fur Seals travel long distances from breeding rookeries to reach their feeding areas. Average distance traveled is 653 km, which is the maximum for any species of otariids. Most foraging trips are made to the west and south-west of the Juan Fernandez Islands. Their distribution at sea is not well known, although they are generally restricted to the Juan Fernandez Archipelago. Individuals occasionally reach the coast of South America from Peru to Chile.
</paragraph>
</subSubSection>
<subSubSection id="56EF65631E5F564B99C39E5B8A1EFE28" lastPageId="4" pageId="3" pageNumber="90" type="conservation">
<paragraph id="1E4A36E81E5F564B99C39E5B8A1EFE28" blockId="3.[1467,2676,1076,3469]" lastBlockId="4.[105,1310,283,515]" lastPageId="4" pageId="3" pageNumber="90">
<emphasis id="2C81EAFA1E5F564C99C39E5B8949F3F1" bold="true" box="[1469,1821,3121,3154]" pageId="3" pageNumber="90">Status and Conservation.</emphasis>
CITES Appendix II. Classified as Near Threatened on The IUCN Red List. Based on a 1990-1991 breeding census, total population of the Juan Fernandez Fur Seal 1s ¢.12,000 individuals. As with other southern fur seals, commercial hunting of the Juan Fernandez Fur Seal in the 19&quot; century led to a population crash. It was thought to be extinct in the early 20&quot; century but was rediscovered in the mid-20&quot; century. With protection, the population has been slowly increasing ever since. Fisheries impacts are currently minimal, but the Juan Fernandez Fur Seal may face future challenges. Population reductions of the 19&quot; century led to a genetic bottleneck, reducing genetic variability, which may increase vulnerability to disease or climate change. Climate change has the potential to affect marine environments of the South Pacific Ocean in ways that may negatively impact species already required to make extremely long distance and duration foraging trips during their breeding season.
</paragraph>
</subSubSection>
<subSubSection id="56EF65631E58564B9C1493F08C90FDA1" pageId="4" type="bibRefCitation_list">
<paragraph id="1E4A36E81E58564B9C1493F08C90FDA1" blockId="4.[105,1310,283,515]" pageId="4">
<emphasis id="2C81EAFA1E58564B9C1493F08F57FE10" bold="true" box="[106,259,410,435]" pageId="4">Bibliography.</emphasis>
Arnould (2009), Aurioles &amp; Trillmich (2008c), Bonner (1981), Brunner (2004), Francis &amp; Boness (1991), Francis et al. (1998), Hubbs &amp; Norris (1971), Jefferson et al. (2008), Reijnders et al. (1993), Repenning etal. (1971), Rice (1998), Scheffer (1958), Torres (1987).
</paragraph>
</subSubSection>
</treatment>
</document>