Comparison of some reproductive characteristics of farmed and wild white shrimp males Litopenaeus vannamei (Decapoda: Penaeidae)
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| Format: | Artículo científico |
| Language: | en |
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Universidad de Costa Rica
2007
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| author | Sergio Rendón Rodríguez |
| author_facet | Sergio Rendón Rodríguez |
| contents | Comparison of some reproductive characteristics of farmed and wild white shrimp males Litopenaeus vannamei (Decapoda: Penaeidae) Sergio Rendón Rodríguez Emilio Macías Regalado José Antonio Calderón Pérez Rafael Solís Ibarra Arturo Núñez Pastén Biología males reproduction Litopenaeus vannamei We rated some reproductive characteristics of white shrimp Litopenaeus vannamei (Boone, 1931)males using 46 farmed individuals (weighing 21.42±0.56 g) and 40 wild individuals (weighing 36.10±0.72 g).In farmed shrimps, spermatophore mean weight was 8.94±0.51 mg; total mean sperm count was 3.90±0.27 x 106in each spermatophore; and mean percentage of normal sperm was 86.9±0.37 %. In wild individuals, the respectivevalues were 30.68±2.32 mg; 6.22±1.09 x 106; and 62.1±3.56 %. In both groups, the differences betweenright and left spermatophore were not significant (p<0.01). There were significant differences in spermatophoreweight and percentage of normal sperm between farmed and wild shrimps; sperm counts differences, however,were not significant (p<0.01). The relationship between spermatophore weight (Ws) and individual weight (Wo)was Ws (mg)=1.23 (Wo)-17.34 (r2=0.89), in farmed shrimps; and Ws (mg)=2.57 (Wo)-60.04 (r2=0.64), in wildones. In cultivated organisms, the relationship between sperm counts (Cs) and individual weight (Wo) was Cs (x106)=1.13*10-4* (Wo) 3.361 (r2= 0.85); and versus spermatophores weight was Cs (x 106)=0.439* (Ws) 0.984(r2= 0.90). In wild organisms, there was no correlation. The proportion of normal sperm ranged from 79.8 to 95.2% (86.9±0.37 %) and from 14.0 to 91.5 % (62.1±2.52 %), in farmed and wild shrimps, respectively. The mostfrequent abnormalities in both farm and wild animals were sperm without spike (49.3 % and 76.6 %, respectively)and irregular shape (35.8 % and 17.7 %). The less frequent occurrences were those of bent (10.2 % and4.29 %) and double spike (4.7 % and 1.41 %). Rev. Biol. Trop. 55 (1): 199-206. Epub 2007 March. 31. 2007 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44955121 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.55 |
| format | Artículo científico |
| id | redalyc_44955121 |
| institution | Redalyc |
| language | en |
| publishDate | 2007 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Comparison of some reproductive characteristics of farmed and wild white shrimp males Litopenaeus vannamei (Decapoda: Penaeidae) Sergio Rendón Rodríguez Biología males reproduction Litopenaeus vannamei Comparison of some reproductive characteristics of farmed and wild white shrimp males Litopenaeus vannamei (Decapoda: Penaeidae) Sergio Rendón Rodríguez Emilio Macías Regalado José Antonio Calderón Pérez Rafael Solís Ibarra Arturo Núñez Pastén Biología males reproduction Litopenaeus vannamei We rated some reproductive characteristics of white shrimp Litopenaeus vannamei (Boone, 1931)males using 46 farmed individuals (weighing 21.42±0.56 g) and 40 wild individuals (weighing 36.10±0.72 g).In farmed shrimps, spermatophore mean weight was 8.94±0.51 mg; total mean sperm count was 3.90±0.27 x 106in each spermatophore; and mean percentage of normal sperm was 86.9±0.37 %. In wild individuals, the respectivevalues were 30.68±2.32 mg; 6.22±1.09 x 106; and 62.1±3.56 %. In both groups, the differences betweenright and left spermatophore were not significant (p<0.01). There were significant differences in spermatophoreweight and percentage of normal sperm between farmed and wild shrimps; sperm counts differences, however,were not significant (p<0.01). The relationship between spermatophore weight (Ws) and individual weight (Wo)was Ws (mg)=1.23 (Wo)-17.34 (r2=0.89), in farmed shrimps; and Ws (mg)=2.57 (Wo)-60.04 (r2=0.64), in wildones. In cultivated organisms, the relationship between sperm counts (Cs) and individual weight (Wo) was Cs (x106)=1.13*10-4* (Wo) 3.361 (r2= 0.85); and versus spermatophores weight was Cs (x 106)=0.439* (Ws) 0.984(r2= 0.90). In wild organisms, there was no correlation. The proportion of normal sperm ranged from 79.8 to 95.2% (86.9±0.37 %) and from 14.0 to 91.5 % (62.1±2.52 %), in farmed and wild shrimps, respectively. The mostfrequent abnormalities in both farm and wild animals were sperm without spike (49.3 % and 76.6 %, respectively)and irregular shape (35.8 % and 17.7 %). The less frequent occurrences were those of bent (10.2 % and4.29 %) and double spike (4.7 % and 1.41 %). Rev. Biol. Trop. 55 (1): 199-206. Epub 2007 March. 31. 2007 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44955121 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.55 |
| title | Comparison of some reproductive characteristics of farmed and wild white shrimp males Litopenaeus vannamei (Decapoda: Penaeidae) |
| topic | Biología males reproduction Litopenaeus vannamei |
| url | https://www.redalyc.org/articulo.oa?id=44955121 |