Actividad ovárica del pampanito, Stromateus stellatus en el litoral de la Región del Biobío, Chile
A study on the reproductive biology of the Pacific butterfish, Stromateus stellatus, using samples from the coast off Biobío Region (Chile), was carried out. Samples were obtained from fishing vessels during austral spring and summer months. Microscopic analysis shows the presence of oocytes at diff...
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| Lenguaje: | Spanish / Castilian |
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Universidad de Valparaíso. Facultad de Ciencias del Mar
2010
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| Acceso en línea: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572010000400018 |
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oai:scielo:S0718-195720100004000182011-04-28Actividad ovárica del pampanito, Stromateus stellatus en el litoral de la Región del Biobío, ChileCarocca,ClaudioChong,Javier Reproduction asynchronous spawning fecundity sexual maturity A study on the reproductive biology of the Pacific butterfish, Stromateus stellatus, using samples from the coast off Biobío Region (Chile), was carried out. Samples were obtained from fishing vessels during austral spring and summer months. Microscopic analysis shows the presence of oocytes at different developmental stages in the same ovaries, a feature consistent with asynchronous spawning. The frequency of maturity stages shows dominance of mature specimens (90%) in October, previtellogenic in December (33%), and an increase of vitellogenic (73%) and mature (21%) specimens in January. This suggests spawning events in November and February, and a reduced reproductive activity in December. The average size at first maturity was 21.1 cm TL. Partial fecundity varied from 8,340 (TL = 20.6 cm) to 36,210 (TL = 28.1 cm) oocytes. The relationship between partial fecundity and size is represented by Fp = 14.832 TL 2.258 (R² = 0.3043).info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.45 suppl.1 20102010-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572010000400018es10.4067/S0718-19572010000400018 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
Spanish / Castilian |
| topic |
Reproduction asynchronous spawning fecundity sexual maturity |
| spellingShingle |
Reproduction asynchronous spawning fecundity sexual maturity Carocca,Claudio Chong,Javier Actividad ovárica del pampanito, Stromateus stellatus en el litoral de la Región del Biobío, Chile |
| description |
A study on the reproductive biology of the Pacific butterfish, Stromateus stellatus, using samples from the coast off Biobío Region (Chile), was carried out. Samples were obtained from fishing vessels during austral spring and summer months. Microscopic analysis shows the presence of oocytes at different developmental stages in the same ovaries, a feature consistent with asynchronous spawning. The frequency of maturity stages shows dominance of mature specimens (90%) in October, previtellogenic in December (33%), and an increase of vitellogenic (73%) and mature (21%) specimens in January. This suggests spawning events in November and February, and a reduced reproductive activity in December. The average size at first maturity was 21.1 cm TL. Partial fecundity varied from 8,340 (TL = 20.6 cm) to 36,210 (TL = 28.1 cm) oocytes. The relationship between partial fecundity and size is represented by Fp = 14.832 TL 2.258 (R² = 0.3043). |
| author |
Carocca,Claudio Chong,Javier |
| author_facet |
Carocca,Claudio Chong,Javier |
| author_sort |
Carocca,Claudio |
| title |
Actividad ovárica del pampanito, Stromateus stellatus en el litoral de la Región del Biobío, Chile |
| title_short |
Actividad ovárica del pampanito, Stromateus stellatus en el litoral de la Región del Biobío, Chile |
| title_full |
Actividad ovárica del pampanito, Stromateus stellatus en el litoral de la Región del Biobío, Chile |
| title_fullStr |
Actividad ovárica del pampanito, Stromateus stellatus en el litoral de la Región del Biobío, Chile |
| title_full_unstemmed |
Actividad ovárica del pampanito, Stromateus stellatus en el litoral de la Región del Biobío, Chile |
| title_sort |
actividad ovárica del pampanito, stromateus stellatus en el litoral de la región del biobío, chile |
| publisher |
Universidad de Valparaíso. Facultad de Ciencias del Mar |
| publishDate |
2010 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572010000400018 |
| work_keys_str_mv |
AT caroccaclaudio actividadovaricadelpampanitostromateusstellatusenellitoraldelaregiondelbiobiochile AT chongjavier actividadovaricadelpampanitostromateusstellatusenellitoraldelaregiondelbiobiochile |
| _version_ |
1714202304658276352 |