Preliminary results of the empirical validation of daily increments in otoliths of jack mackerel Trachurus symmetricus murphyi (Nichols, 1920) marked with oxytetracycline
The frequency of microincrement formation in sagittae otoliths of jack mackerel Trachurus symmetricus was validated using experiments on captive fish. Adult jack mackerel were injected with a dose of 100 mg of oxytetracycline/kg of fish. A second injection was performed 30 days later. The fish were...
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| Format: | Article |
| Language: | English |
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Consejo Superior de Investigaciones Científicas
2003-12-01
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| Series: | Scientia Marina |
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| Online Access: | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/516 |
| _version_ | 1818622936954699776 |
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| author | Miguel Araya Marianela Medina Hugo Arancibia |
| author_facet | Miguel Araya Marianela Medina Hugo Arancibia |
| author_sort | Miguel Araya |
| collection | DOAJ |
| description | The frequency of microincrement formation in sagittae otoliths of jack mackerel Trachurus symmetricus was validated using experiments on captive fish. Adult jack mackerel were injected with a dose of 100 mg of oxytetracycline/kg of fish. A second injection was performed 30 days later. The fish were then sacrificed and their sagittae otoliths were extracted. Thin sections of the otoliths were prepared and observed through an epifluorescent microscope using ultraviolet light. Two fluorescent marks corresponding to the two injections were clearly visible. The average number of microincrements between the two fluorescent marks was 29 (n=10; S.D.=1.63) and the median was 29.3. The Wilcoxon signed-rank test indicated that this value was not significantly different from 30. This result indicates that microincrements in otoliths of adult jack mackerel of between 28.4 and 37.7 cm fork length are formed with a daily frequency. |
| first_indexed | 2024-12-16T18:33:06Z |
| format | Article |
| id | doaj.art-46a891e94e5c4701bcca0d2f5cd9436b |
| institution | Directory Open Access Journal |
| issn | 0214-8358 1886-8134 |
| language | English |
| last_indexed | 2024-12-16T18:33:06Z |
| publishDate | 2003-12-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Scientia Marina |
| spelling | doaj.art-46a891e94e5c4701bcca0d2f5cd9436b2022-12-21T22:21:14ZengConsejo Superior de Investigaciones CientíficasScientia Marina0214-83581886-81342003-12-0167447147510.3989/scimar.2003.67n4471510Preliminary results of the empirical validation of daily increments in otoliths of jack mackerel Trachurus symmetricus murphyi (Nichols, 1920) marked with oxytetracyclineMiguel Araya0Marianela Medina1Hugo Arancibia2Departamento Ciencias del Mar, Universidad Arturo PratDepartamento Ciencias del Mar, Universidad Arturo PratDepartamento de Oceanografía, Facultad de Ciencias Naturales y Oceanográficas, Universidad de ConcepciónThe frequency of microincrement formation in sagittae otoliths of jack mackerel Trachurus symmetricus was validated using experiments on captive fish. Adult jack mackerel were injected with a dose of 100 mg of oxytetracycline/kg of fish. A second injection was performed 30 days later. The fish were then sacrificed and their sagittae otoliths were extracted. Thin sections of the otoliths were prepared and observed through an epifluorescent microscope using ultraviolet light. Two fluorescent marks corresponding to the two injections were clearly visible. The average number of microincrements between the two fluorescent marks was 29 (n=10; S.D.=1.63) and the median was 29.3. The Wilcoxon signed-rank test indicated that this value was not significantly different from 30. This result indicates that microincrements in otoliths of adult jack mackerel of between 28.4 and 37.7 cm fork length are formed with a daily frequency.http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/516otolithvalidationmicroincrementstrachurusjack mackerel |
| spellingShingle | Miguel Araya Marianela Medina Hugo Arancibia Preliminary results of the empirical validation of daily increments in otoliths of jack mackerel Trachurus symmetricus murphyi (Nichols, 1920) marked with oxytetracycline Scientia Marina otolith validation microincrements trachurus jack mackerel |
| title | Preliminary results of the empirical validation of daily increments in otoliths of jack mackerel Trachurus symmetricus murphyi (Nichols, 1920) marked with oxytetracycline |
| title_full | Preliminary results of the empirical validation of daily increments in otoliths of jack mackerel Trachurus symmetricus murphyi (Nichols, 1920) marked with oxytetracycline |
| title_fullStr | Preliminary results of the empirical validation of daily increments in otoliths of jack mackerel Trachurus symmetricus murphyi (Nichols, 1920) marked with oxytetracycline |
| title_full_unstemmed | Preliminary results of the empirical validation of daily increments in otoliths of jack mackerel Trachurus symmetricus murphyi (Nichols, 1920) marked with oxytetracycline |
| title_short | Preliminary results of the empirical validation of daily increments in otoliths of jack mackerel Trachurus symmetricus murphyi (Nichols, 1920) marked with oxytetracycline |
| title_sort | preliminary results of the empirical validation of daily increments in otoliths of jack mackerel trachurus symmetricus murphyi nichols 1920 marked with oxytetracycline |
| topic | otolith validation microincrements trachurus jack mackerel |
| url | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/516 |
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