Initial sexual maturity and fecundity of the goldfish Carassius auratus (Perciformes: Cyprynidae) under semi-controlled conditions
We studied the time of initial sexual maturity and the fecundity of the goldfish Carassius auratus under semi-controlled conditions. During the study the water temperature fluctuated from 21 to 30 ºC, the pH between 7 and 8, and the dissolved oxygen between 5.5 and 7 ppm. Sixty days old juvenile fis...
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| Format: | Article |
| Language: | English |
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Vicerractoría Investigación
2006-12-01
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| Series: | Revista de Biología Tropical |
| Subjects: | |
| Online Access: | http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442006000400007 |
| _version_ | 1797711588400037888 |
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| author | A.A Ortega-Salas H Reyes-Bustamante |
| author_facet | A.A Ortega-Salas H Reyes-Bustamante |
| author_sort | A.A Ortega-Salas |
| collection | DOAJ |
| description | We studied the time of initial sexual maturity and the fecundity of the goldfish Carassius auratus under semi-controlled conditions. During the study the water temperature fluctuated from 21 to 30 ºC, the pH between 7 and 8, and the dissolved oxygen between 5.5 and 7 ppm. Sixty days old juvenile fish received prophylactic treatments of brackish water (15 ‰) and methylene blue baths (1 %), and they were fed with live Daphnia magna. The initial sexual maturity occurred between 225 and 233 days of captivity. Mean absolute fecundity was 2 347 (± 302.2 SD) ova per gonad, and mean relative fecundity was 63.44 eggs/g fish weight. Gonadosomatic index was between 7.5 and 9.0. Our data will allow ornamental fish producers to calculate the time of initial maturity and fecundity for this species. Rev. Biol. Trop. 54 (4): 1113-1116. Epub 2006 Dec. 15.<br>Estudiamos el tiempo inicial de madurez sexual y la fecundidad del pez dorado Carassius auratus en condiciones semi-controladas. Durante el estudio la temperatura del gua varió de 21 a 30 ºC, el pH entre 7 y 8, y el oxígeno disuelto entre 5.5 y 7 ppm. Jóvenes de 60 días de edad recibieron tratamiento profiláctico con agua salobre (15 ‰), y baños de azul de metileno (1 %). Se les alimentó con Daphnia magna. La madurez sexual inicial fue tras 225 a 233 días en cautiverio. La fecundidad absoluta media fue de 2 347 (±302.2 DS) óvulos por gónada y la fecundidad relativa fue de 63.44 óvulos/g del peso del pez. El índice gonadosomático se calculó entre 7.5 and 9.0. |
| first_indexed | 2024-03-12T07:09:16Z |
| format | Article |
| id | doaj.art-7621fe192b564f5e85ef39c451025b29 |
| institution | Directory Open Access Journal |
| issn | 0034-7744 2215-2075 |
| language | English |
| last_indexed | 2024-03-12T07:09:16Z |
| publishDate | 2006-12-01 |
| publisher | Vicerractoría Investigación |
| record_format | Article |
| series | Revista de Biología Tropical |
| spelling | doaj.art-7621fe192b564f5e85ef39c451025b292023-09-02T23:15:47ZengVicerractoría InvestigaciónRevista de Biología Tropical0034-77442215-20752006-12-0154411131116Initial sexual maturity and fecundity of the goldfish Carassius auratus (Perciformes: Cyprynidae) under semi-controlled conditionsA.A Ortega-SalasH Reyes-BustamanteWe studied the time of initial sexual maturity and the fecundity of the goldfish Carassius auratus under semi-controlled conditions. During the study the water temperature fluctuated from 21 to 30 ºC, the pH between 7 and 8, and the dissolved oxygen between 5.5 and 7 ppm. Sixty days old juvenile fish received prophylactic treatments of brackish water (15 ‰) and methylene blue baths (1 %), and they were fed with live Daphnia magna. The initial sexual maturity occurred between 225 and 233 days of captivity. Mean absolute fecundity was 2 347 (± 302.2 SD) ova per gonad, and mean relative fecundity was 63.44 eggs/g fish weight. Gonadosomatic index was between 7.5 and 9.0. Our data will allow ornamental fish producers to calculate the time of initial maturity and fecundity for this species. Rev. Biol. Trop. 54 (4): 1113-1116. Epub 2006 Dec. 15.<br>Estudiamos el tiempo inicial de madurez sexual y la fecundidad del pez dorado Carassius auratus en condiciones semi-controladas. Durante el estudio la temperatura del gua varió de 21 a 30 ºC, el pH entre 7 y 8, y el oxígeno disuelto entre 5.5 y 7 ppm. Jóvenes de 60 días de edad recibieron tratamiento profiláctico con agua salobre (15 ‰), y baños de azul de metileno (1 %). Se les alimentó con Daphnia magna. La madurez sexual inicial fue tras 225 a 233 días en cautiverio. La fecundidad absoluta media fue de 2 347 (±302.2 DS) óvulos por gónada y la fecundidad relativa fue de 63.44 óvulos/g del peso del pez. El índice gonadosomático se calculó entre 7.5 and 9.0.http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442006000400007pez doradoCarassius auratusmadurez inicialfecundidadgold fishCarassius auratusinitial maturityfecundity |
| spellingShingle | A.A Ortega-Salas H Reyes-Bustamante Initial sexual maturity and fecundity of the goldfish Carassius auratus (Perciformes: Cyprynidae) under semi-controlled conditions Revista de Biología Tropical pez dorado Carassius auratus madurez inicial fecundidad gold fish Carassius auratus initial maturity fecundity |
| title | Initial sexual maturity and fecundity of the goldfish Carassius auratus (Perciformes: Cyprynidae) under semi-controlled conditions |
| title_full | Initial sexual maturity and fecundity of the goldfish Carassius auratus (Perciformes: Cyprynidae) under semi-controlled conditions |
| title_fullStr | Initial sexual maturity and fecundity of the goldfish Carassius auratus (Perciformes: Cyprynidae) under semi-controlled conditions |
| title_full_unstemmed | Initial sexual maturity and fecundity of the goldfish Carassius auratus (Perciformes: Cyprynidae) under semi-controlled conditions |
| title_short | Initial sexual maturity and fecundity of the goldfish Carassius auratus (Perciformes: Cyprynidae) under semi-controlled conditions |
| title_sort | initial sexual maturity and fecundity of the goldfish carassius auratus perciformes cyprynidae under semi controlled conditions |
| topic | pez dorado Carassius auratus madurez inicial fecundidad gold fish Carassius auratus initial maturity fecundity |
| url | http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442006000400007 |
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