{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T12:38:37Z","timestamp":1753879117474,"version":"3.41.2"},"reference-count":36,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2024,5,14]],"date-time":"2024-05-14T00:00:00Z","timestamp":1715644800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Medical Primatology"],"published-print":{"date-parts":[[2024,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Analysing the literature about the reproductive anatomy on New World Primates, one can see the need of standardisation on the description methods and, more importantly, the lack of detailed information. The problem is aggravated by the difficult access to specimens of the endangered species such as <jats:italic>Brachyteles<\/jats:italic> sp. This paper's objective was to extend knowledge on the male reproductive anatomy of these primates. The testis and funiculus spermaticus of <jats:italic>Brachyteles<\/jats:italic> are described in detail.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We utilised one individual of <jats:italic>Brachyteles arachnoides<\/jats:italic>, two hybrids (<jats:italic>B.\u2009arachnoides<\/jats:italic>\u2009\u00d7\u2009<jats:italic>Brachyteles hypoxanthus<\/jats:italic>) and photographs of the testis of a third fresh specimen of a hybrid individual.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The septum formed by tunica dartos adheres to the testis and separates the scrotum in two testicular cavities. Passed the spermatic cord, the external spermatic fascia continues with the tunica dartos, covering the cranial half of the testis. The fascia cremasterica divides itself in bundles of fibres and forms loops around the testicles creating a sac like structure that seems to be unique among Neotropical Primates. The appendix testis is described for the first time in platyrrhini. It is presented as a sessile structure in the extremitas capitata of the testis. Previous literature on the reproductive anatomy of platyrrhini is limited. Despite that, it can be said that the large size and volume of the testis, and complex structure of the cremaster, could consist of a heat loss reduction strategy in cold and humid forest environments.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Except for the larger size of the testicles in hybrid individuals, no other significant morphological differences were found between <jats:italic>B.\u2009arachnoides<\/jats:italic> and hybrids (<jats:italic>B.\u2009arachnoides<\/jats:italic>\u2009\u00d7\u2009<jats:italic>B.\u2009hypoxanthus<\/jats:italic>).<\/jats:p><\/jats:sec>","DOI":"10.1111\/jmp.12702","type":"journal-article","created":{"date-parts":[[2024,5,15]],"date-time":"2024-05-15T03:45:40Z","timestamp":1715744740000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Observations on the anatomy of the funiculus spermaticus and the testis in <i>Brachyteles<\/i> sp. (<scp>SPIX<\/scp>, 1823) primates \u2013 Atelidae"],"prefix":"10.1111","volume":"53","author":[{"given":"Pedro do Carmo","family":"Labanca","sequence":"first","affiliation":[{"name":"Manchester University NHS Trust (MFT), Medical Illustration and Clinical Photography  Manchester UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marcovan","family":"Porto","sequence":"additional","affiliation":[{"name":"Centro Universit\u00e1rio Serra dos \u00d3rg\u00e3os (Unifeso)  Teres\u00f3polis Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Felipe Carvalho","family":"Resende","sequence":"additional","affiliation":[{"name":"Instituto de Ci\u00eancia e Tecnologia em Biomodelos \u2013 ICTB\/FIOCRUZ  Rio de Janeiro Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marcelo","family":"Abidu\u2010Figueiredo","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Ensino, Pesquisa e Extens\u00e3o em Morfologia de Animais Dom\u00e9sticos e Selvagens, Departamento de Anatomia Animal e Humana, Instituto de Ci\u00eancias Biol\u00f3gicas e da Sa\u00fade Universidade Federal Rural do Rio Janeiro  Serop\u00e9dica Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alcides","family":"Pissinatti","sequence":"additional","affiliation":[{"name":"Centro Universit\u00e1rio Serra dos \u00d3rg\u00e3os (Unifeso)  Teres\u00f3polis Brazil"},{"name":"Centro de Primatologia do Rio de Janeiro \u2013 (CPRJ\u2010INEA)  Guapimirim Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,5,14]]},"reference":[{"volume-title":"Primate Anatomy: An Introduction","year":"2000","author":"Ankel\u2010Simons F","key":"e_1_2_9_2_1"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/ahe.12365"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1159\/000076264"},{"volume-title":"The Anatomy of the Gorilla","year":"1950","author":"Raven HC","key":"e_1_2_9_5_1"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmor.1051220202"},{"key":"e_1_2_9_7_1","first-page":"1","article-title":"Morphological description of the clitoris from the Leontopithecus rosalia (Linnaeus, 1766), Leontopithecus chrysomelas (Kuhl, 1820) and Leontopithecus chrysopygus (Mikan, 1823) (Primates, Platyrrhini, Callitrichidae)","volume":"180","author":"Porto M","year":"2010","journal-title":"Ann Natl Acad Med"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF01730382"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajp.20633"},{"volume-title":"Primates: Comparative Anatomy and Taxonomy. 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