Reproductive aspects of the Patagonian toothfish (Dissostichus eleginoides) off southern Chile
We present the results for the reproductive biology of Patagonian toothfish (Dissostichus eleginoides) caught off southern Chile from January to March and June to November 2006. A total of 10,896 specimens were measured (55-220 cm total length, TL) and sexed (7,049 males, 64.7%; and 3,847 females, 3...
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| Lenguaje: | English |
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Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
2009
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oai:scielo:S0718-560X20090003000092010-03-17Reproductive aspects of the Patagonian toothfish (Dissostichus eleginoides) off southern ChileArana,Patricio size structure reproduction size at first maturity Patagonian toothfish Dissostichus eleginoides Chile We present the results for the reproductive biology of Patagonian toothfish (Dissostichus eleginoides) caught off southern Chile from January to March and June to November 2006. A total of 10,896 specimens were measured (55-220 cm total length, TL) and sexed (7,049 males, 64.7%; and 3,847 females, 35.3%). Macroscopic observations showed that gonad maturation begins at 60 cm TL in both sexes, with an average maturation size of 81 cm TL in males and 89 cm TL in females. This species appears to have an ampie spawning period that occurs only off the far southern region of Chile. To date, no evidence indicates that this resource reproduces in any other areas of the Pacific Ocean off the coasts of South América, where no specimens were observed with mature gonads, percentages of atresia were high, and juvenile fish were not caught in trawl fishing operations targeting other commercial species.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.37 n.3 20092009-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2009000300009en |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
size structure reproduction size at first maturity Patagonian toothfish Dissostichus eleginoides Chile |
| spellingShingle |
size structure reproduction size at first maturity Patagonian toothfish Dissostichus eleginoides Chile Arana,Patricio Reproductive aspects of the Patagonian toothfish (Dissostichus eleginoides) off southern Chile |
| description |
We present the results for the reproductive biology of Patagonian toothfish (Dissostichus eleginoides) caught off southern Chile from January to March and June to November 2006. A total of 10,896 specimens were measured (55-220 cm total length, TL) and sexed (7,049 males, 64.7%; and 3,847 females, 35.3%). Macroscopic observations showed that gonad maturation begins at 60 cm TL in both sexes, with an average maturation size of 81 cm TL in males and 89 cm TL in females. This species appears to have an ampie spawning period that occurs only off the far southern region of Chile. To date, no evidence indicates that this resource reproduces in any other areas of the Pacific Ocean off the coasts of South América, where no specimens were observed with mature gonads, percentages of atresia were high, and juvenile fish were not caught in trawl fishing operations targeting other commercial species. |
| author |
Arana,Patricio |
| author_facet |
Arana,Patricio |
| author_sort |
Arana,Patricio |
| title |
Reproductive aspects of the Patagonian toothfish (Dissostichus eleginoides) off southern Chile |
| title_short |
Reproductive aspects of the Patagonian toothfish (Dissostichus eleginoides) off southern Chile |
| title_full |
Reproductive aspects of the Patagonian toothfish (Dissostichus eleginoides) off southern Chile |
| title_fullStr |
Reproductive aspects of the Patagonian toothfish (Dissostichus eleginoides) off southern Chile |
| title_full_unstemmed |
Reproductive aspects of the Patagonian toothfish (Dissostichus eleginoides) off southern Chile |
| title_sort |
reproductive aspects of the patagonian toothfish (dissostichus eleginoides) off southern chile |
| publisher |
Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar |
| publishDate |
2009 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2009000300009 |
| work_keys_str_mv |
AT aranapatricio reproductiveaspectsofthepatagoniantoothfishdissostichuseleginoidesoffsouthernchile |
| _version_ |
1714205065585098752 |