The Physiology and Behavior of Triploid Fishes

Benfey, Tillmann J.

doi:10.1080/10641269991319162

Cited by 401 publications

(460 citation statements)

References 156 publications

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“…Similar results were reported in fast-growing transgenic Atlantic salmon by Cogswell et al (2002), who speculated that the alterations in transgenic Atlantic salmon erythrocyte morphology were likely an adaptive mechanism to meet increased metabolic requirements because the increase in the cell surface area to volume ratio would facilitate more rapid oxygen diffusion into and out of the cells (Benfey, 1999;Lay and Baldwin, 1999;Cogswell et al, 2002;). This could apply to 'all-fish' GH transgenic carp as well, which have also been shown to have elevated routine metabolic rates (Guan et al, 2008).…”

Section: Erythrocyte Measurementssupporting

confidence: 74%

The hematological response to exhaustive exercise in ‘all-fish’ growth hormone transgenic common carp (Cyprinus carpio L.)

Wang

et al. 2011

Aquaculture

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Section: Erythrocyte Measurementssupporting

confidence: 74%

The hematological response to exhaustive exercise in ‘all-fish’ growth hormone transgenic common carp (Cyprinus carpio L.)

Wang

et al. 2011

Aquaculture

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“…In comparison to CL 50-96h of dissolved oxygen between diploid and triploid jundia, Weiss and Zaniboni-Filho (2009) have reported the sensibility of triploid 6% higher than the concentration for diploid. In agreement with Benfey (1999), these characteristics can result in a variation of the growth and behaviour of triploid animals when compared to diploids in the same conditions of rearing.…”

Section: Discussionmentioning

confidence: 50%

“…In agreement with Benfey (1999), the reduced number of erythrocytes in triploid organisms is a result of a homeostatic mechanism of triploids to compensate the increase of the cell volume, caused by accommodation of extra genetic material. Several studies have drawn attention to the theoretical impediment caused by the alteration in the relation superficial area/cell volume in the basal metabolism of the cells in the triploid organisms, especially on the physiological processes mediated by the plasmatic membrane of these cells.…”

Section: Discussionmentioning

confidence: 61%

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Triploidy in the hematology of jundia juveniles (Siluriformes: Heptapteridae)

et al. 2012

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This study compared the hematological characteristics of diploid and triploid of jundia, Rhamdia quelen juveniles, an important freshwater fish cultured in south Brazil. Hematological morphometry of erythrocytes were determined in blood smears under a light microscope. The blood was used to measure the number of red blood cells (RBC) with a hemocytometer Neubauer chamber, and the numbers of white blood cells (WBC) and thrombocytes that were obtained using an indirect method. The results showed that triploidy increased (p < 0.01) the size and volume of the erythrocytes. Nevertheless, as expected, triploidy decreased (p < 0.01) the number of circulating erythrocytes, leucocytes and trombocytes in the blood of jundia. Moreover differential cell counts were different in diploids and triploids, suggesting that triploidy affects the number of cells and their proportion in blood. Lymphocytes were the most predominant cells in the differential counting of diploid fish (62.5%) while monocytes were predominant in triploid fish (49.6%). These results suggest performance differences between ploidies of jundia, and require future studies to evaluate the potential of triploid jundia in the culture conditions and resistance to infection.Keywords: Rhamdia quelen, triploid, diploid, blood cells. Triploidia na hematologia de juvenis de jundiá (Siluriformes: Heptapteridae)Resumo O presente estudo comparou características hematológicas de juvenis de jundiás Rhamdia quelen diploides e triploides, um importante peixe de água doce cultivado no sul do Brasil. A morfometria hematológica dos eritrócitos foi determinada em extensões sanguíneas sob microscopia óptica comum. O sangue dos animais foi também utilizado para mensurar o número total de eritrócitos em câmera de Neubauer, bem como os números totais de leucócitos e trombócitos pelo método indireto. Os resultados demonstraram que a triploidia aumentou (p < 0,01) o tamanho e volume dos eritrócitos. No entanto, como esperado, a triploidia reduziu (p < 0,01) o número de eritrócitos, leucócitos e trombócitos circulantes do jundiá. Além disto, a contagem diferencial de células sanguíneas foi diferente em diploides e triploides, sugerindo que a triploidia afeta o número das células, bem como sua proporção no sangue. Linfócitos foram as células predominantes na contagem de leucócitos de peixes diploides (62,5%), enquanto os monócitos foram os predominantes nos peixes triploides (49,6%). Estes resultados sugerem desempenhos diferentes entre as ploidias do jundiá e exige estudos futuros para avaliar o potencial dos jundiás triploides sob condições de cultivo e frente à infecção.Palavras-chave: Rhamdia quelen, triploide, diploide, células sanguíneas.

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“…doi:10.1038/sj.hdy.6800165 quently inviable. Most studies of reproductive physiology in triploid fishes have concluded that triploid females do not produce mature oocytes, although triploid males are able to produce mature, postmeiotic cells, albeit generally aneuploid and in small numbers (Benfey, 1999). The culture of turbot (Scophthalmus maximus) is firmly established in Europe and triploid individuals have been obtained in order to avoid problems related to sexual maturation (Piferrer et al, 2000(Piferrer et al, , 2001.…”

Section: Introductionmentioning

confidence: 99%

Sex-dependent synaptic behaviour in triploid turbot, Scophthalmus maximus (Pisces, Scophthalmidae)

et al. 2002

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A surface-spreading synaptonemal complex (SC) technique was used to analyse spermatocytes and oocytes of triploid turbot (Scophthalmus maximus) in order to visualise the process of chromosome synapsis. The most conspicuous characteristic of triploid oocytes is that, in the trivalents, the lateral elements of the SC were frequently associated in threes, either completely along the length of the trivalent, or partially, forming a variety of forked structures. In these nuclei, synapsis usually occurred among homologous chromosomes and the number of bivalents observed was significantly higher than that expected under the assumption of

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The Physiology and Behavior of Triploid Fishes

Cited by 401 publications

References 156 publications

The hematological response to exhaustive exercise in ‘all-fish’ growth hormone transgenic common carp (Cyprinus carpio L.)

The hematological response to exhaustive exercise in ‘all-fish’ growth hormone transgenic common carp (Cyprinus carpio L.)

Triploidy in the hematology of jundia juveniles (Siluriformes: Heptapteridae)

Sex-dependent synaptic behaviour in triploid turbot, Scophthalmus maximus (Pisces, Scophthalmidae)

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