Reproductive characteristics of adult channel catfish treated with trenbolone acetate during the phenocritical period of sex differentiation
Channel catfish fry fed for 60 days with 0, 50 or 100 mg/kg trenbolone acetate (TBA) and judged by dissection of fingerlings to be males were grown to sexual maturity in ponds. Body weight and gonadal development were compared when the fish were 18 months old. Trenbolone-treated fish were significan...
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| Veröffentlicht in: | Aquaculture 2000-10, Vol.189 (3), p.351-360 |
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| creator | Davis, Kenneth B Morrison, John Galvez, John I |
| description | Channel catfish fry fed for 60 days with 0, 50 or 100 mg/kg trenbolone acetate (TBA) and judged by dissection of fingerlings to be males were grown to sexual maturity in ponds. Body weight and gonadal development were compared when the fish were 18 months old. Trenbolone-treated fish were significantly lighter, shorter and the gonads less developed than control males. Three-year-old fish were visually examined for external sex characteristics, and sampled for gonadal development and plasma hormone concentrations. Gonad weight, GSI and plasma testosterone were significantly higher in control fish than in either of the trenbolone-treated groups. Twenty fish from each treatment group were placed in spawning cages with normal female fish. Five spawns were obtained from each of the treatment groups; however, all 10 spawns were composed of infertile eggs. TBA interferes with normal gonadal development of both the testis and ovary but does not functionally masculinize channel catfish. |
| doi_str_mv | 10.1016/S0044-8486(00)00378-1 |
| format | Article |
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Body weight and gonadal development were compared when the fish were 18 months old. Trenbolone-treated fish were significantly lighter, shorter and the gonads less developed than control males. Three-year-old fish were visually examined for external sex characteristics, and sampled for gonadal development and plasma hormone concentrations. Gonad weight, GSI and plasma testosterone were significantly higher in control fish than in either of the trenbolone-treated groups. Twenty fish from each treatment group were placed in spawning cages with normal female fish. Five spawns were obtained from each of the treatment groups; however, all 10 spawns were composed of infertile eggs. TBA interferes with normal gonadal development of both the testis and ovary but does not functionally masculinize channel catfish.</description><identifier>ISSN: 0044-8486</identifier><identifier>EISSN: 1873-5622</identifier><identifier>DOI: 10.1016/S0044-8486(00)00378-1</identifier><identifier>CODEN: AQCLAL</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Animal aquaculture ; Animal productions ; Animal reproduction ; Aquaculture ; Biological and medical sciences ; Channel catfish ; Fish ; Fundamental and applied biological sciences. Psychology ; Ictalurus punctatus ; Pisciculture ; Reproduction ; Sex differentiation ; Trenbolone acetate ; Vertebrate aquaculture</subject><ispartof>Aquaculture, 2000-10, Vol.189 (3), p.351-360</ispartof><rights>2000 Elsevier Science B.V.</rights><rights>2000 INIST-CNRS</rights><rights>Copyright Elsevier Sequoia S.A. 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Body weight and gonadal development were compared when the fish were 18 months old. Trenbolone-treated fish were significantly lighter, shorter and the gonads less developed than control males. Three-year-old fish were visually examined for external sex characteristics, and sampled for gonadal development and plasma hormone concentrations. Gonad weight, GSI and plasma testosterone were significantly higher in control fish than in either of the trenbolone-treated groups. Twenty fish from each treatment group were placed in spawning cages with normal female fish. Five spawns were obtained from each of the treatment groups; however, all 10 spawns were composed of infertile eggs. TBA interferes with normal gonadal development of both the testis and ovary but does not functionally masculinize channel catfish.</description><subject>Animal aquaculture</subject><subject>Animal productions</subject><subject>Animal reproduction</subject><subject>Aquaculture</subject><subject>Biological and medical sciences</subject><subject>Channel catfish</subject><subject>Fish</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Ictalurus punctatus</subject><subject>Pisciculture</subject><subject>Reproduction</subject><subject>Sex differentiation</subject><subject>Trenbolone acetate</subject><subject>Vertebrate aquaculture</subject><issn>0044-8486</issn><issn>1873-5622</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><recordid>eNqFkUuLFDEUhQtRsB39CUIQEV2U3jwqlVqJDL5gQPCxDqnkxs5Qk7RJatT_4I821T0ouHERQrjfOUnO6bqHFJ5ToPLFJwAheiWUfArwDICPqqe3uh1VI-8HydjtbvcHudvdK-USAKQc6K779REPObnV1nCNxO5NNrZiDqUGW0jyxLh1qdsgRlyINdWHsic1o6noyPdQj4c4pyVFJMZibQPi1hziV1L3SA57jMnm0AzNQg7NO7nNuOAP4oL32NQ1mBpSvN_d8WYp-OBmP-u-vHn9-fxdf_Hh7fvzVxe95ZOovZNG8cl4YRwHZeYJJ2mRylm60QxK0Mnytvw0TxNDN4D0fhw8m5RiOIPkZ92Tk2_7-rcVS9VXoVhcFhMxrUXTUVIQFBr46B_wMq05trdpBkIqwRlr0HCCbE6lZPT6kMOVyT81Bb0VpI8F6S19DaCPBWnadI9vzE1p0fhsog3lr1gMwPhm__KEYUvkOmDWxQaMFl3IaKt2Kfznot-JkKfy</recordid><startdate>20001002</startdate><enddate>20001002</enddate><creator>Davis, Kenneth B</creator><creator>Morrison, John</creator><creator>Galvez, John I</creator><general>Elsevier B.V</general><general>Elsevier Science</general><general>Elsevier Sequoia S.A</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QL</scope><scope>7QR</scope><scope>7ST</scope><scope>7TN</scope><scope>7U7</scope><scope>7U9</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H94</scope><scope>H95</scope><scope>H98</scope><scope>H99</scope><scope>L.F</scope><scope>L.G</scope><scope>M7N</scope><scope>P64</scope><scope>SOI</scope></search><sort><creationdate>20001002</creationdate><title>Reproductive characteristics of adult channel catfish treated with trenbolone acetate during the phenocritical period of sex differentiation</title><author>Davis, Kenneth B ; Morrison, John ; Galvez, John I</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c394t-d6a839af4ad308ab9e96ce16b6d7a58419c319cf9b992ed506ff75f29882eb063</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Animal aquaculture</topic><topic>Animal productions</topic><topic>Animal reproduction</topic><topic>Aquaculture</topic><topic>Biological and medical sciences</topic><topic>Channel catfish</topic><topic>Fish</topic><topic>Fundamental and applied biological sciences. 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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Animal aquaculture Animal productions Animal reproduction Aquaculture Biological and medical sciences Channel catfish Fish Fundamental and applied biological sciences. Psychology Ictalurus punctatus Pisciculture Reproduction Sex differentiation Trenbolone acetate Vertebrate aquaculture |
| title | Reproductive characteristics of adult channel catfish treated with trenbolone acetate during the phenocritical period of sex differentiation |
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