{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,29]],"date-time":"2026-06-29T05:44:07Z","timestamp":1782711847175,"version":"3.54.5"},"reference-count":21,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2026,3,16]],"date-time":"2026-03-16T00:00:00Z","timestamp":1773619200000},"content-version":"vor","delay-in-days":15,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,3,1]],"date-time":"2026-03-01T00:00:00Z","timestamp":1772323200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100002322","name":"Coordena\u00e7\u00e3o de Aperfei\u00e7oamento de Pessoal de N\u00edvel Superior","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100002322","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Anat Histol Embryol"],"published-print":{"date-parts":[[2026,3]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    The scorpion mud turtle (\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:italic>Kinosternon scorpioides<\/jats:italic>\n                    <\/jats:styled-content>\n                    ), a freshwater chelonian widely distributed in South and Central America, presents gaps in the microscopic and ultrastructural characterisation of its male reproductive system. This study provides a comprehensive characterisation of the testes, epididymides, and deferent ducts of adult males collected during the rainy reproductive season in the Brazilian Amazon. Morphometric parameters were recorded and showed a positive association between body weight and reproductive tract mass, supporting increased gonadal investment during the breeding period. Tissues were processed for light microscopy (LM), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). Histological and ultrastructural analyses revealed active spermatogenesis, abundant germ cells in multiple developmental stages, and regionally specialised epithelia along the epididymis and deferent ducts. Spermatozoa exhibited preserved acrosomal, nuclear, mitochondrial and axonemal structures, indicating functional integrity and short\u2010term storage capacity within the male reproductive tract. These findings expand current knowledge of chelonian reproductive biology and provide essential baseline data to support assisted reproductive technologies and conservation strategies for\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:italic>K. scorpioides<\/jats:italic>\n                    <\/jats:styled-content>\n                    and related freshwater turtle species.\n                  <\/jats:p>","DOI":"10.1111\/ahe.70101","type":"journal-article","created":{"date-parts":[[2026,3,17]],"date-time":"2026-03-17T14:25:08Z","timestamp":1773757508000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Spermatogenesis and Morphology of the Male Reproductive Tract of the Turtle\n                    <i>Kinosternon scorpioides<\/i>"],"prefix":"10.1111","volume":"55","author":[{"given":"Vinicius Maia Ribeiro","family":"de Godoy","sequence":"first","affiliation":[{"name":"Department of Surgery Graduate Program in the Anatomy of Domestic and Wild Animals, School of Veterinary Medicine and Animal Science, University of S\u00e3o Paulo  S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0920-2560","authenticated-orcid":false,"given":"Alana Lislea","family":"de Sousa","sequence":"additional","affiliation":[{"name":"Department of Clinic State University of Maranh\u00e3o  S\u00e3o Lu\u00eds Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9870-1539","authenticated-orcid":false,"given":"Mariapaz Due\u00f1as","family":"Fl\u00f3rez","sequence":"additional","affiliation":[{"name":"Department of Surgery Graduate Program in the Anatomy of Domestic and Wild Animals, School of Veterinary Medicine and Animal Science, University of S\u00e3o Paulo  S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5914-7491","authenticated-orcid":false,"given":"Ant\u00f4nio Francisco da Silva","family":"Lisboa Neto","sequence":"additional","affiliation":[{"name":"Federal University of Piau\u00ed (UFPI)  Piau\u00ed Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6260-661X","authenticated-orcid":false,"given":"Antonio Chaves","family":"de Assis Neto","sequence":"additional","affiliation":[{"name":"Department of Surgery Graduate Program in the Anatomy of Domestic and Wild Animals, School of Veterinary Medicine and Animal Science, University of S\u00e3o Paulo  S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,3,16]]},"reference":[{"issue":"6","key":"e_1_2_9_2_1","first-page":"42","article-title":"Aproximaci\u00f3n al Conocimiento Sobre la Reproducci\u00f3n de Los Quelonios","volume":"3","author":"Avenda\u00f1o I.","year":"2002","journal-title":"Bolet\u00edn GEAS III"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10750\u2010020\u201004402\u2010y"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.3854\/crm.5.063.scorpioides.v1.2011"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1590\/s0100\u2010736x2010000400001"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1590\/1676\u201006032014006413"},{"issue":"6","key":"e_1_2_9_7_1","first-page":"1641","article-title":"Plasma Testosterone and Seasonal Reproductive Changes in the Scorpion Mud Turtle","volume":"46","author":"Carvalho Viana D.","year":"2014","journal-title":"Pakistan Journal of Zoology"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.21071\/az.v66i255.2515"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/vms3.245"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmor.10872"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1038\/srep20456"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1590\/1519\u20106984.285306"},{"issue":"1","key":"e_1_2_9_13_1","first-page":"9","article-title":"Caracter\u00edsticas Ecol\u00f3gicas do Habitat de Kinosternon scorpioides scorpioides Linnaeus, 1766 (Reptila, Chelonia, Kinosternidae) no Munic\u00edpio de S\u00e3o Bento\u2014Baixada Maranhense (Maranh\u00e3o, Brasil)","volume":"20","author":"Pereira L. 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