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| Registros recuperados: 27 | |
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| Panfili, Jacques; De Pontual, Helene; Troadec, Herve; Wrigh, Peter J.. |
| Sclerochronology, the study of calcified structures to reconstruct the past history of living organisms, is central to fish biology and fisheries management. This manual aims to provide an overview of the current theoretical and practical aspects of sclerochronological studies. By providing information on the nature of calcified structures (otoliths, scales, skeleton), their uses in fish research and methods for preparation and examination, the manual constitutes a comprehensive guide for researchers, technicians and students either new to the field or interested in expanding their range of expertise. The enclosed multimedia version (DVD) is supplemented by videos illustrating the main technical procedures with an alternative navigation mode based on... |
| Tipo: Text |
Palavras-chave: Age; Age determination; Biological aging; Chemistry; Growth; Otolith reading; Otoliths; Scale reading; Scales; Skeleton. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/00017/12801/9742.pdf |
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| Degrati,Mariana; García,Néstor A.; Grandi,M. Florencia; Leonardi,M. Soledad; Loizaga de Castro,Rocío; Vales,Damián G.; Dans,Silvana L.; Pedraza,Susana N.; Crespo,Enrique A.. |
| We present a new record of sperm whale with notes on diet, age determination and a review of strandings along the continental Argentine coast. A complete necropsy was made in the field, and morphometric data were taken. The specimen stranded was a mature male of 64+ years old. This is the oldest specimen determined for a sperm whale in the Southwest Atlantic coast. In the stomach contents a total of 302 cephalopod lower beaks were recovered. Cestodes were present in the blubber but parasites were not found in stomach and intestine contents. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Age determination; Continental Argentine coast; Sperm whale; Stranding. |
| Ano: 2011 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832011000200013 |
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| Noldus, L.P.J.J.; Klerk, R.J.J. De. |
| This study of the Harbour Porpoise Phocoena phocoena (Linnaeus, 1758) has been undertaken in order to find out whether differences in size and growth rate between the skulls of males and females could be demonstrated. Stuart & Morejohn (1980) have established this phenomenon in the population of the north-eastern Pacific. The material on which this study is based, consists of 76 skulls present in the collection of the Rijksmuseum van Natuurlijke Historie (RMNH), Leiden. They all belong to specimens stranded on the Dutch coast. In order to determine the age, of all these specimens the number of dentinal growth layer groups (GLG) in the teeth was counted. Thereupon 32 cranial characters were measured of each skull; these measurements were plotted against... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Mammalia; Cetacea; Phocoenidae; Phocoena phocoena; North Sea; Skull; Growth; Teeth; Age determination; 42.84. |
| Ano: 1984 |
URL: http://www.repository.naturalis.nl/record/319036 |
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| Urteaga, J.R.; Perrotta, R.G.. |
| Argentine black drum distributes mainly in shallow waters associated to estuarine areas, particularly to Samborombon Bay where it may be detected throughout the year. Nevertheless, it can also be spotted more southwards (40°S) and at deeper waters. During summer, catches of the species in Samborombon Bay are practically negligible, probably due to movements towards shallow waters out of reach of the inshore commercial fleet. Landings increase in autumn and show peak values in winter, coinciding with the fishing season of whitemouth croaker, Micropogonias furnieri, whose geographical distribution within the bay overlaps that of black drum. As of 1995, landings of black drum showed increasing trends both in Argentina and Uruguay. These increments coincide... |
| Tipo: Journal Contribution |
Palavras-chave: Age determination; Growth; Landing statistics; Geographical distribution; Fishery management; Coastal fisheries; Growth; Age determination; Geographical distribution; Fishery management; Coastal fisheries; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_24110; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_1696. |
| Ano: 2001 |
URL: http://hdl.handle.net/1834/2593 |
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| Villarino, M.F.. |
| La merluza común (Merluccius hubbsi) es uno de los más importantes recursos pesqueros del Mar Argentino. Constituye aproximadamente el 68 por ciento de las capturas desembarcadas, según lo indicado por las estadísticas oficiales (Boletín Oficial, Subsecretaría de Pesca, 1988). Su explotación ha mantenido una tendencia creciente a partir de 1974, como consecuencia del incremento de las capturas de Argentina y el plan de desarrollo pesquero implementado por Uruguay. Las capturas de 1978 y 1979 superaron ampliamente el valor del rendimiento máximo sostenible, estimado en 344.000 toneladas (Verazay y Otero, 1986), y se mantienen próximas al mismo a partir del último año mencionado.Como resultado de esta explotación el recurso pesquero se redujo aproximadamente... |
| Tipo: Theses and Dissertations |
Palavras-chave: Age determination; Otoliths; Growth. |
| Ano: 1990 |
URL: http://hdl.handle.net/1834/5027 |
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| Jabeur, Ch.; Missaoui, H.; Gharbi, H.; El Abed, A.. |
| L’étude de la croissance du rouget de roche Mullus surmuletus dans le golfe de Gabès, basée sur la lecture de 478 otolithes d’individus provenant essentiellement de la pêche côtière et partiellement du chalutage benthique , a permis d’estimer les paramètres de croissance de cette espèce selon le modèle de Von Bertalanffy. La clé âge-longueur a été établie et les courbes de croissance en longueur et pondérale ont été tracées séparément pour les mâles, les femelles et sexes confondus. Sans différenciation de sexe, la longueur asymptotique est estimée à 223 mm, le coefficient K à 0.344 an -1 et l’âge théorique T0 à –0.79. Les relations Longueur-Poids ont été également établies séparément pour les mâles et les femelles. Dans la gamme des tailles étudiées, la... |
| Tipo: Journal Contribution |
Palavras-chave: Otolith reading; Growth; Age determination; Mullet fisheries; Mullus surmuletus; Http://aims.fao.org/aos/agrovoc/c_43348. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/4295 |
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| Leta, Héctor R.; Keim, Albert. |
| In general, the increased exploitation of the natural organic resources of the world makes it more and more necessary to apply proper resource management procedures in order to avoid overexploitation. In the fisheries field, the managemente is, among other things often based on studies of fish ageing. Such studies have become an important tool, to be used in the elaboration of population dynamic models and of biological parameters like stock recruitment, growth and mortality. In age studies the otoliths and scales of the fish are of basic importance. The reason is that they reflect th occurrence of the biological changes, which take place in the fish during its lifespan. Such changes may derive from for instance the natural growth process of the fish or... |
| Tipo: Report |
Palavras-chave: Otoliths; Marine fish; Age determination; Otolith reading. |
| Ano: 1982 |
URL: http://hdl.handle.net/1834/4911 |
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| Zavatteri, A.; Abachian, V.E.; Giussi, A.R.; Di Leva, I.V.. |
| Estimate of age, growth and natural mortality of longtail hake (Macruronus magellanicus) in the Southwest Atlantic Ocean during summer 2010. Longtail hake (Macurornus magellanicus) total length (TL) and weight (W) growth parameters were estimated and age structure and natural instantaneous mortality coefficient (M) analyzed. Data were obtained within the framework of the Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) “Observers on Board of Commercial Vessels” Subprogramme. The information, derived from the area comprised between 46° S-54° S, was collected during the February-April 2010 period. Sagittae otoliths reading of 5,034 individuals (2,429 males and 2,605 females) between 28-99 cm TL was performed. The maximum ages observed in... |
| Tipo: Journal Contribution |
Palavras-chave: Age determination; Growth; Natural mortality. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5504 |
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| Bach, P.; Chauvelon, P.. |
| Daily growth increments (DGI) density - otolith radius relationship according to the von Bertanlanffy's growth model: application to Lutjanus sebae (Cuvier, 1828) in Seychelles. Often, age determination of fishes is conducted from several parts (scales and otoliths for teleost fishes, vertebrae, spine, opercular bones, ...) displaying seasonal marks (annuli) associated with growth checks, which can be used for the estimation of individual age. Since Panella's (1971, 1974) discovery of the daily growth increments (DGI) in the teleost otoliths, age determination with DGI method has been used more and more on larval stages of both temperate and tropical species and juvenile and adult individuals of, principally, snapper and grouper species. The age study of... |
| Tipo: Report |
Palavras-chave: Otolith reading; Age determination; Methodology; Growth; Lutjanus sebae. |
| Ano: 1993 |
URL: http://hdl.handle.net/1834/5119 |
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| Registros recuperados: 27 | |
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