{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T12:43:22Z","timestamp":1790685802033,"version":"4.1.0"},"reference-count":76,"publisher":"Inter-Research Science Center","license":[{"start":{"date-parts":[[2022,11,17]],"date-time":"2022-11-17T00:00:00Z","timestamp":1668643200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.int-res.com\/journals\/terms-of-use\/"}],"content-domain":{"domain":["int-res.com"],"crossmark-restriction":false},"short-container-title":["Dis. Aquat. Org."],"published-print":{"date-parts":[[2022,11,17]]},"abstract":"<jats:p>Despite being the most abundant sea turtle in the world, the olive ridley turtle <jats:italic>Lepidochelys olivacea<\/jats:italic> is classified as Vulnerable by the IUCN. There is evidence of congenital malformations in hatchlings, and the associated causes are multifactorial, with both genetic and environmental sources. Santuario Playa Ceuta (SPC) is a sanctuary for the olive ridley, located at the northernmost region of its nesting range in the Mexican Pacific. The objective of this study was to identify and quantify the prevalence and severity of congenital malformations in olive ridley embryos\/hatchlings in SPC during the 2017 nesting season. We collected 62907 eggs from 643 relocated nests that were moved to a hatchery, of which 4242 eggs with obvious development did not hatch and were analyzed for this study. Hatching success was 53.9%, with 22.5% of nests (n = 145) and 0.54% of eggs (n = 344) showing embryos or hatchlings with malformations. The nest severity index was 2.4 (range: 1-10) malformed embryos or hatchlings per nest, and the organism severity index was 1.4 (range: 1-7) malformations per malformed embryo or hatchling. Leucism was the most prevalent malformation (34.4%; 170\/494 total observed), with the craniofacial region showing the greatest diversity of malformations (17\/35 types). Given the geographical position of SPC, extreme environmental conditions (e.g. cold, heat, and dryness) could be one of the main causes of teratogenesis in this species. However, more studies are needed regarding the presence of contaminants, genetic factors, health assessments of nesting females, and malformation rates of nests that remain <jats:italic>in situ<\/jats:italic> versus those that are relocated.<\/jats:p>","DOI":"10.3354\/dao03705","type":"journal-article","created":{"date-parts":[[2022,10,20]],"date-time":"2022-10-20T10:31:50Z","timestamp":1666261910000},"page":"61-71","update-policy":"https:\/\/doi.org\/10.3354\/policy","source":"Crossref","is-referenced-by-count":3,"title":["Leucism: the prevalent congenital malformation in the olive ridley sea turtle of northwestern Mexico"],"prefix":"10.3354","volume":"152","author":[{"given":"I","family":"Sosa-Cornejo","sequence":"first","affiliation":[{"name":"Doctorado en Ciencias Biol\u00f3gicas, Facultad de Biolog\u00eda, Universidad Aut\u00f3noma de Sinaloa, Culiac\u00e1n, Sinaloa 80040, Mexico"},{"name":"Programa de Tortugas Marinas de la Facultad de Biolog\u00eda, Universidad Aut\u00f3noma de Sinaloa, Culiac\u00e1n, Sinaloa 80040, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R","family":"Mart\u00edn-del-Campo","sequence":"additional","affiliation":[{"name":"Department of Oral Health Sciences, Faculty of Dentistry, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"JA","family":"Gonz\u00e1lez-Flores","sequence":"additional","affiliation":[{"name":"Divisi\u00f3n de Ciencias Naturales y Exactas, Departamento de Biolog\u00eda, Universidad de Guanajuato, Guanajuato 36050, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"ZB","family":"Gonz\u00e1lez-Camacho","sequence":"additional","affiliation":[{"name":"Programa de Tortugas Marinas de la Facultad de Biolog\u00eda, Universidad Aut\u00f3noma de Sinaloa, Culiac\u00e1n, Sinaloa 80040, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"BA","family":"Cabrera-Cuellar","sequence":"additional","affiliation":[{"name":"Facultad de Ciencias Biol\u00f3gicas, Universidad Ju\u00e1rez del Estado de Durango, G\u00f3mez Palacio, Durango 35010, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A","family":"Bielli","sequence":"additional","affiliation":[{"name":"Pro Delphinus, Lima 15074, Peru"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"JE","family":"Valdes-Flores","sequence":"additional","affiliation":[{"name":"Doctorado en Ciencias Biol\u00f3gicas, Facultad de Biolog\u00eda, Universidad Aut\u00f3noma de Sinaloa, Culiac\u00e1n, Sinaloa 80040, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"V","family":"Olim\u00f3n-Andal\u00f3n","sequence":"additional","affiliation":[{"name":"Laboratorio de Inmunogen\u00e9tica, Facultad de Biolog\u00eda, Universidad Aut\u00f3noma de Sinaloa, Culiac\u00e1n, Sinaloa 80040, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1913","reference":[{"key":"Ref1","unstructured":"Ackerman RA (1997) The nest environment and the embryonic development of sea turtles. 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