{"id":"https://openalex.org/W2056957877","doi":"https://doi.org/10.1111/j.1469-7998.1998.tb00133.x","title":"Reproduction in the male Cape fur seal Arctocephalus pusillus pusillus: age at puberty and annual cycle of the testis","display_name":"Reproduction in the male Cape fur seal Arctocephalus pusillus pusillus: age at puberty and annual cycle of the testis","publication_year":1998,"publication_date":"1998-09-01","ids":{"openalex":"https://openalex.org/W2056957877","doi":"https://doi.org/10.1111/j.1469-7998.1998.tb00133.x","mag":"2056957877"},"language":"en","primary_location":{"id":"doi:10.1111/j.1469-7998.1998.tb00133.x","doi":"https://doi.org/10.1111/j.1469-7998.1998.tb00133.x","is_oa":false,"landing_page_url":"https://doi.org/10.1111/j.1469-7998.1998.tb00133.x","pdf_url":null,"source":{"id":"https://openalex.org/S44571845","display_name":"Journal of Zoology","issn_l":"0952-8369","issn":["0952-8369","1469-7998"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-d","jufo-1","ki-jl-1","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Zoology","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5080005044","display_name":"CL Stewardson","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I118347636","display_name":"Australian National University","ror":"https://ror.org/019wvm592","country_code":"AU","type":"education","lineage":["https://openalex.org/I118347636"]}],"countries":["AU"],"is_corresponding":true,"raw_author_name":"C. L. Stewardson","raw_affiliation_strings":["Division of Botany and Zoology, Australian National University, Canberra, ACT 0200, Australia. E-mail: carolyn.stewardson@anu.edu.au"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Division of Botany and Zoology, Australian National University, Canberra, ACT 0200, Australia. E-mail: carolyn.stewardson@anu.edu.au","institution_ids":["https://openalex.org/I118347636"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5025854592","display_name":"Marth\u00e1n N Bester","orcid":"https://orcid.org/0000-0002-2265-764X","observed_orcids":["https://orcid.org/0000-0002-2265-764X"]},"institutions":[{"id":"https://openalex.org/I69552723","display_name":"University of Pretoria","ror":"https://ror.org/00g0p6g84","country_code":"ZA","type":"education","lineage":["https://openalex.org/I69552723"]}],"countries":["ZA"],"is_corresponding":false,"raw_author_name":"M. N. Bester","raw_affiliation_strings":["Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa","Department of Zoology & Entomology, University of Pretoria, Pretoria 0002, South Africa"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa","institution_ids":["https://openalex.org/I69552723"]},{"raw_affiliation_string":"Department of Zoology & Entomology, University of Pretoria, Pretoria 0002, South Africa","institution_ids":["https://openalex.org/I69552723"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5041961969","display_name":"W. Herman Oosthuizen","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"W. H. Oosthuizen","raw_affiliation_strings":["Sea Fisheries Research Institute, Private Bag X2, Rogge Bay 8012, South Africa"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Sea Fisheries Research Institute, Private Bag X2, Rogge Bay 8012, South Africa","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5080005044"],"corresponding_institution_ids":["https://openalex.org/I118347636"],"apc_list":{"value":4430,"currency":"USD","value_usd":4430},"apc_paid":null,"fwci":0.6651,"has_fulltext":false,"cited_by_count":24,"citation_normalized_percentile":{"value":0.60806733,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":97},"biblio":{"volume":"246","issue":"1","first_page":"63","last_page":"74"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10116","display_name":"Sperm and Testicular Function","score":0.4975999891757965,"subfield":{"id":"https://openalex.org/subfields/2743","display_name":"Reproductive Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T10116","display_name":"Sperm and Testicular Function","score":0.4975999891757965,"subfield":{"id":"https://openalex.org/subfields/2743","display_name":"Reproductive Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10659","display_name":"Marine animal studies overview","score":0.4399000108242035,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10174","display_name":"Animal Behavior and Reproduction","score":0.03310000151395798,"subfield":{"id":"https://openalex.org/subfields/1105","display_name":"Ecology, Evolution, Behavior and Systematics"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/cape-fur-seal","display_name":"Cape fur seal","score":0.984000027179718},{"id":"https://openalex.org/keywords/arctocephalus-pusillus-pusillus","display_name":"Arctocephalus pusillus pusillus","score":1.0},{"id":"https://openalex.org/keywords/male-reproduction","display_name":"male reproduction","score":0.9190000295639038},{"id":"https://openalex.org/keywords/puberty-onset","display_name":"puberty onset","score":0.8880000114440918},{"id":"https://openalex.org/keywords/testis","display_name":"testis","score":0.5799999833106995},{"id":"https://openalex.org/keywords/spermatogenesis","display_name":"spermatogenesis","score":0.8500000238418579},{"id":"https://openalex.org/keywords/seminiferous-tubules","display_name":"seminiferous tubules","score":0.8080000281333923},{"id":"https://openalex.org/keywords/epididymis","display_name":"epididymis","score":0.9739999771118164},{"id":"https://openalex.org/keywords/reproductive-quiescence","display_name":"reproductive quiescence","score":0.9169999957084656},{"id":"https://openalex.org/keywords/photoperiod","display_name":"photoperiod","score":0.6759999990463257},{"id":"https://openalex.org/keywords/breeding-season","display_name":"breeding season","score":0.746999979019165},{"id":"https://openalex.org/keywords/reproductive-anatomy","display_name":"reproductive anatomy","score":0.5180000066757202},{"id":"https://openalex.org/keywords/inter-individual-variability","display_name":"interindividual variability","score":0.4320000112056732}],"concepts":[{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.8777452707290649},{"id":"https://openalex.org/C123765429","wikidata":"https://www.wikidata.org/wiki/Q36961","display_name":"Spermatogenesis","level":2,"score":0.8185182809829712},{"id":"https://openalex.org/C2778799465","wikidata":"https://www.wikidata.org/wiki/Q1043473","display_name":"Fur seal","level":2,"score":0.7665843963623047},{"id":"https://openalex.org/C102874275","wikidata":"https://www.wikidata.org/wiki/Q2914623","display_name":"Seasonal breeder","level":2,"score":0.6269944310188293},{"id":"https://openalex.org/C59659247","wikidata":"https://www.wikidata.org/wiki/Q11990","display_name":"Reproduction","level":2,"score":0.6223752498626709},{"id":"https://openalex.org/C2777628658","wikidata":"https://www.wikidata.org/wiki/Q1034198","display_name":"Cape","level":2,"score":0.5745327472686768},{"id":"https://openalex.org/C2781254305","wikidata":"https://www.wikidata.org/wiki/Q1973610","display_name":"Epididymis","level":3,"score":0.5590815544128418},{"id":"https://openalex.org/C2781087480","wikidata":"https://www.wikidata.org/wiki/Q17145","display_name":"Sperm","level":2,"score":0.49656230211257935},{"id":"https://openalex.org/C90856448","wikidata":"https://www.wikidata.org/wiki/Q431","display_name":"Zoology","level":1,"score":0.49604567885398865},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.25221168994903564},{"id":"https://openalex.org/C134018914","wikidata":"https://www.wikidata.org/wiki/Q162606","display_name":"Endocrinology","level":1,"score":0.14773893356323242},{"id":"https://openalex.org/C166957645","wikidata":"https://www.wikidata.org/wiki/Q23498","display_name":"Archaeology","level":1,"score":0.0},{"id":"https://openalex.org/C59822182","wikidata":"https://www.wikidata.org/wiki/Q441","display_name":"Botany","level":1,"score":0.0},{"id":"https://openalex.org/C95457728","wikidata":"https://www.wikidata.org/wiki/Q309","display_name":"History","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1111/j.1469-7998.1998.tb00133.x","doi":"https://doi.org/10.1111/j.1469-7998.1998.tb00133.x","is_oa":false,"landing_page_url":"https://doi.org/10.1111/j.1469-7998.1998.tb00133.x","pdf_url":null,"source":{"id":"https://openalex.org/S44571845","display_name":"Journal of Zoology","issn_l":"0952-8369","issn":["0952-8369","1469-7998"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-d","jufo-1","ki-jl-1","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Zoology","raw_type":"journal-article"},{"id":"doi:10.1017/s095283699800908x","doi":"https://doi.org/10.1017/s095283699800908x","is_oa":false,"landing_page_url":"https://doi.org/10.1017/s095283699800908x","pdf_url":null,"source":{"id":"https://openalex.org/S44571845","display_name":"Journal of Zoology","issn_l":"0952-8369","issn":["0952-8369","1469-7998"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-d","jufo-1","ki-jl-1","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Zoology","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":61,"referenced_works":["https://openalex.org/W54712854","https://openalex.org/W146502877","https://openalex.org/W306197395","https://openalex.org/W401116983","https://openalex.org/W1479818030","https://openalex.org/W1515176672","https://openalex.org/W1526605379","https://openalex.org/W1964530727","https://openalex.org/W1970023638","https://openalex.org/W1979204632","https://openalex.org/W1980618012","https://openalex.org/W1983989257","https://openalex.org/W1987332224","https://openalex.org/W1992411485","https://openalex.org/W1994361987","https://openalex.org/W1995221804","https://openalex.org/W1999624374","https://openalex.org/W2001691973","https://openalex.org/W2009502433","https://openalex.org/W2012259223","https://openalex.org/W2014239318","https://openalex.org/W2024801401","https://openalex.org/W2037414900","https://openalex.org/W2053569879","https://openalex.org/W2059181721","https://openalex.org/W2062127574","https://openalex.org/W2065687701","https://openalex.org/W2068475786","https://openalex.org/W2069517510","https://openalex.org/W2080364834","https://openalex.org/W2085539875","https://openalex.org/W2088148416","https://openalex.org/W2091144647","https://openalex.org/W2107715094","https://openalex.org/W2108835167","https://openalex.org/W2179856018","https://openalex.org/W2226036891","https://openalex.org/W2251966798","https://openalex.org/W2253556723","https://openalex.org/W2285054225","https://openalex.org/W2316008936","https://openalex.org/W2319705865","https://openalex.org/W2319914034","https://openalex.org/W2323189495","https://openalex.org/W2332165811","https://openalex.org/W2464941686","https://openalex.org/W2485672358","https://openalex.org/W2487426486","https://openalex.org/W2522761461","https://openalex.org/W2782277037","https://openalex.org/W2915113965","https://openalex.org/W3125363650","https://openalex.org/W4239156083","https://openalex.org/W4241287998","https://openalex.org/W4248856567","https://openalex.org/W4255627481","https://openalex.org/W4256447005","https://openalex.org/W4299844692","https://openalex.org/W4387961265","https://openalex.org/W4388321442","https://openalex.org/W7007823309"],"related_works":["https://openalex.org/W1987332224","https://openalex.org/W7014993896","https://openalex.org/W2281606468","https://openalex.org/W1970023638","https://openalex.org/W1996104935","https://openalex.org/W3113855118","https://openalex.org/W2071461755","https://openalex.org/W1983989257","https://openalex.org/W2009054608","https://openalex.org/W4360865663"],"abstract_inverted_index":{"Abstract":[0],"Seasonal":[1],"changes":[2],"in":[3,54,102,111,164,179],"the":[4,10,31,55,80,83,107,112,134,172,177,202],"reproductive":[5,131],"anatomy":[6],"and":[7,37,57,67,79,85,94,122,153,167,184],"histology":[8],"of":[9,34,52,70,74,82,109,138,174],"male":[11],"Cape":[12,38],"fur":[13],"seal":[14],"Arctocephalus":[15],"pusillus":[16,17],"were":[18,21,88,140],"examined.":[19],"Studies":[20],"based":[22],"on":[23,30,90],"99":[24],"specimens":[25],"collected":[26],"between":[27,65,160,181],"Algoa":[28],"Bay":[29],"south\u2010east":[32],"coast":[33],"South":[35],"Africa,":[36],"Frio,":[39],"Namibia,":[40],"during":[41,114],"1974":[42],"to":[43,116,209],"1990.":[44],"Reproductive":[45],"organs":[46],"are":[47],"briefly":[48],"described.":[49],"The":[50],"presence":[51],"sperm":[53],"seminiferous":[56,84],"epididymal":[58,86],"tubules":[59,87],"indicates":[60],"that":[61,188],"males":[62,99],"attain":[63],"puberty":[64],"3":[66],"4":[68],"years":[69],"age.":[71],"Quantitative":[72],"measurements":[73],"testis":[75,77,120],"weight,":[76],"volume,":[78],"diameter":[81,125],"analysed":[89],"a":[91,127],"monthly":[92],"basis":[93],"spermatogenesis":[95,139,147,151,198],"documented.":[96],"Although":[97],"some":[98],"may":[100,170,190],"remain":[101],"breeding":[103,205],"condition":[104],"until":[105],"March,":[106],"absence":[108],"spermatozoa":[110],"epididymis":[113],"February":[115],"June,":[117],"when":[118],"mean":[119,123],"mass":[121],"tubule":[124],"reached":[126],"minimum,":[128],"clearly":[129],"showed":[130],"quiescence":[132],"following":[133],"rut.":[135],"Four":[136],"stages":[137],"observed:":[141],"(1)":[142],"inactive":[143],"(February/March\u2013June);":[144],"(2)":[145],"early":[146],"(July);":[148],"(3)":[149],"late":[150],"(July/August\u2013December/January);":[152],"(4)":[154],"epithelial":[155,182],"regression":[156,183],"(February\u2013June).":[157],"Individual":[158],"variation":[159],"males,":[161],"possibly":[162],"differences":[163],"social":[165],"status":[166],"body":[168],"condition,":[169],"influence":[171],"duration":[173,180],"spermatogenesis,":[175],"hence":[176],"overlap":[178],"inactivity.":[185],"It":[186],"appears":[187],"photoperiod":[189],"act":[191],"as":[192],"an":[193],"obligatory":[194],"proximate":[195],"factor":[196],"initiating":[197],"3\u20134":[199],"months":[200],"before":[201],"relatively":[203],"short":[204],"season":[206],"from":[207],"November":[208],"December.":[210]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":3},{"year":2015,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2026-11-08T12:12:28.789561","created_date":"2016-06-24T00:00:00"}