{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,24]],"date-time":"2026-01-24T06:52:50Z","timestamp":1769237570515,"version":"3.49.0"},"reference-count":41,"publisher":"Oxford University Press (OUP)","issue":"9","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2008,12,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Serra-Pereira, B., Figueiredo, I., Farias, I., Moura, T., and Gordo, L. S. 2008. Description of dermal denticles from the caudal region of Raja clavata and their use for the estimation of age and growth. \u2013 ICES Journal of Marine Science, 65: 1701\u20131709. This work is a response to a lack of knowledge of the biology of Raja clavata in southern European waters, particularly in terms of age and growth. Two structures were analysed: dermal denticles and vertebral centra. Six types of dermal denticle were identified in the tail. Among those, small thorns were the most suitable for age determination owing to their fixed position, persistence throughout their lifespan, and defined growth-band pattern. Caudal thorns were more accurate than vertebral centra for age determination and were therefore selected as the most appropriate structure for ageing R. clavata. Based on edge analysis, annual band deposition was verified. The birthdate was established as 1 June based on the prevalence of hyaline edges in age-0 class specimens: prevalence peaked in May and June. Both von Bertalanffy and Gompertz growth models were fitted to age-at-length data, but the former was considered more appropriate based on similarity between the estimated L\u221e and the maximum size recorded for the species. No significant differences in growth parameters were observed between sexes. The estimated growth parameters were L\u221e = 1280 mm, k = 0.117 year\u22121, and t0 = \u22120.617 years. The maximum age estimated for R. clavata was 10 years, for a female of length 835 mm.<\/jats:p>","DOI":"10.1093\/icesjms\/fsn167","type":"journal-article","created":{"date-parts":[[2008,10,17]],"date-time":"2008-10-17T00:13:20Z","timestamp":1224202400000},"page":"1701-1709","source":"Crossref","is-referenced-by-count":30,"title":["Description of dermal denticles from the caudal region of Raja clavata and their use for the estimation of age and growth"],"prefix":"10.1093","volume":"65","author":[{"given":"B.","family":"Serra-Pereira","sequence":"first","affiliation":[{"name":"Unidade de Recursos Marinhos e Sustentabilidade, Instituto de Investiga\u00e7\u00e3o das Pescas e do Mar (IPIMAR\u2014INRB), Avenida Bras\u00edlia, 1449-006 Lisboa, Portugal"},{"name":"Faculdade de Ci\u00eancias de Lisboa, Centro de Oceanografia, Departamento de Biologia Animal, Bloco C2, Campo Grande, 1749-016 Lisboa, Portugal"}]},{"given":"I.","family":"Figueiredo","sequence":"additional","affiliation":[{"name":"Unidade de Recursos Marinhos e Sustentabilidade, Instituto de Investiga\u00e7\u00e3o das Pescas e do Mar (IPIMAR\u2014INRB), Avenida Bras\u00edlia, 1449-006 Lisboa, Portugal"}]},{"given":"I.","family":"Farias","sequence":"additional","affiliation":[{"name":"Unidade de Recursos Marinhos e Sustentabilidade, Instituto de Investiga\u00e7\u00e3o das Pescas e do Mar (IPIMAR\u2014INRB), Avenida Bras\u00edlia, 1449-006 Lisboa, Portugal"},{"name":"Faculdade de Ci\u00eancias de Lisboa, Centro de Oceanografia, Departamento de Biologia Animal, Bloco C2, Campo Grande, 1749-016 Lisboa, Portugal"}]},{"given":"T.","family":"Moura","sequence":"additional","affiliation":[{"name":"Unidade de Recursos Marinhos e Sustentabilidade, Instituto de Investiga\u00e7\u00e3o das Pescas e do Mar (IPIMAR\u2014INRB), Avenida Bras\u00edlia, 1449-006 Lisboa, Portugal"},{"name":"Faculdade de Ci\u00eancias de Lisboa, Centro de Oceanografia, Departamento de Biologia Animal, Bloco C2, Campo Grande, 1749-016 Lisboa, Portugal"}]},{"given":"L. S.","family":"Gordo","sequence":"additional","affiliation":[{"name":"Faculdade de Ci\u00eancias de Lisboa, Centro de Oceanografia, Departamento de Biologia Animal, Bloco C2, Campo Grande, 1749-016 Lisboa, Portugal"}]}],"member":"286","published-online":{"date-parts":[[2008,10,15]]},"reference":[{"key":"2019081211252949700_FSN167C1","doi-asserted-by":"crossref","first-page":"982","DOI":"10.1139\/f81-132","article-title":"A method for comparing the precision of a set of age determinations","volume":"38","author":"Beamish","year":"1981","journal-title":"Canadian Journal of Fisheries and Aquatic Sciences"},{"key":"2019081211252949700_FSN167C2","doi-asserted-by":"crossref","first-page":"233","DOI":"10.1139\/f81-030","article-title":"Multivariate analysis as a means of comparing growth in fish","volume":"38","author":"Bernard","year":"1981","journal-title":"Canadian Journal of Fisheries and Aquatic Sciences"},{"key":"2019081211252949700_FSN167C3","doi-asserted-by":"crossref","first-page":"231","DOI":"10.1051\/alr:2004015","article-title":"Skate and ray species composition in mainland Portugal from the commercial landings","volume":"17","author":"Bordalo-Machado","year":"2004","journal-title":"Aquatic and Living Resources"},{"key":"2019081211252949700_FSN167C4","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1093\/icesjms\/42.2.125","article-title":"Growth rate of Raja clavata in the northeast Irish Sea","volume":"42","author":"Brander","year":"1985","journal-title":"Journal du Conseil International pour l'Exploration de la Mer"},{"key":"2019081211252949700_FSN167C5","doi-asserted-by":"crossref","first-page":"211","DOI":"10.1007\/s10641-006-9105-5","article-title":"Age and growth studies of chondrichthyan fishes: the need for consistency in terminology, verification, validation, and growth function fitting","volume":"77","author":"Cailliet","year":"2006","journal-title":"Environmental Biology of Fishes"},{"key":"2019081211252949700_FSN167C6","doi-asserted-by":"crossref","first-page":"197","DOI":"10.1111\/j.1095-8649.2001.tb00127.x","article-title":"Accuracy, precision and quality control in age determination, including a review of the use and abuse of age validation methods","volume":"59","author":"Campana","year":"2001","journal-title":"Journal of Fish Biology"},{"key":"2019081211252949700_FSN167C7","doi-asserted-by":"crossref","first-page":"1208","DOI":"10.1139\/f82-158","article-title":"A statistical method for evaluating the reproducibility of age determination","volume":"39","author":"Chang","year":"1982","journal-title":"Canadian Journal of Fisheries and Aquatic Sciences"},{"key":"2019081211252949700_FSN167C8","doi-asserted-by":"crossref","first-page":"577","DOI":"10.1017\/S002531540000967X","article-title":"Rays and skates (Raiae). 1. 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