Search Results - "Penman, D. J."

Identification of a sex-determining region in Nile tilapia (Oreochromis niloticus) using bulked segregant analysis by Lee, B.-Y., Penman, D. J., Kocher, T. D.

“…Summary Sex determination in the Nile tilapia (Oreochromis niloticus) is thought to be an XX‐XY (male heterogametic) system controlled by a major gene. We…”
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Treatment with an aromatase inhibitor suppresses high-temperature feminization of genetic male (YY) Nile tilapia by KWON, J. Y, MCANDREW, B. J, PENMAN, D. J

“…High temperature (36 degree C) treatment during sexual differentiation caused significant changes in sex ratio in YY male Nile tilapia Oreochromis niloticus…”
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Spontaneous diploidization of the maternal chromosome set in Nile tilapia (Oreochromis niloticus L.) eggs by Ezaz, M T, McAndrew, B J, Penman, D J

“…Spontaneous diploidization of the maternal chromosome set (SDM) in Oreochromis niloticus is described here for the first time. The SDM phenomenon was observed…”
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Long-term, quantitative analysis of gametogenesis in autotriploid rainbow trout, Oncorhynchus mykiss by Carrasco, L A, Doroshov, S, Penman, D J, Bromage, N

“…A long-term, quantitative analysis was conducted on the gametogenesis of autotriploid rainbow trout ( Oncorhynchus mykiss ) to quantify their degree of…”
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Evidence for the presence of sex chromosomes in the Nile tilapia ( Oreochromis niloticus) from synaptonemal complex analysis of XX, XY and YY genotypes by Carrasco, Luis A.P, Penman, David J, Bromage, Niall

“…A cytogenetic analysis of chromosome synapsis was carried out during the first meiotic prophase of the Nile tilapia, Oreochromis niloticus. Three different…”
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Genetics of sex determination in tilapiine species by Cnaani, A, Lee, B-Y, Zilberman, N, Ozouf-Costaz, C, Hulata, G, Ron, M, D'Hont, A, Baroiller, J-F, D'Cotta, H, Penman, D J, Tomasino, E, Coutanceau, J-P, Pepey, E, Shirak, A, Kocher, T D

“…We identified DNA markers linked to sex determining genes in six closely related species of tilapiine fishes. The mode of sex determination differed among…”
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Early origins of the X and Y chromosomes: lessons from tilapia by Griffin, D K, Harvey, S C, Campos-Ramos, R, Ayling, L-J, Bromage, N R, Masabanda, J S, Penman, D J

“…Differentiated sex chromosome pairs in diverse species display certain common characteristics, normally comprising one largely heterochromatic genetically…”
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Induction of diploid androgenetic and mitotic gynogenetic Nile tilapia (Oreochromis niloticus L.) by MYERS, J. M, PENMAN, D. J, BASAVARAJU, Y, POWELL, S. F, BAOPRASERTKUL, P, RANA, K. J, BROMAGE, N, MCANDREW, B. J

“…Androgenesis is a potentially valuable technique for recovering fish from gene banks composed of cryopreserved sperm, developing inbred lines, and analyzing…”
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Molecular-cytogenetic analysis reveals sequence differences between the sex chromosomes of Oreochromis niloticus: evidence for an early stage of sex-chromosome differentiation by Harvey, S C, Masabanda, J, Carrasco, L A P, Bromage, N R, Penman, D J, Griffin, D K

“…Sex determination in the Nile tilapia, Oreochromis niloticus, is primarily genetic, with XX females and XY males. A candidate sex-determining region in the…”
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Identification of putative sex chromosomes in the blue tilapia, Oreochromis aureus, through synaptonemal complex and FISH analysis by Campos-Ramos, R, Harvey, S C, Masabanda, J S, Carrasco, L A, Griffin, D K, McAndrew, B J, Bromage, N R, Penman, D J

“…Sex determination in the blue tilapia, Oreochromis aureus, is primarily a ZW female-ZZ male system. Here, by analysis of the pachytene meiotic chromosomes of…”
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Physical mapping of the brain and ovarian aromatase genes in the Nile Tilapia, Oreochromis niloticus, by fluorescence in situ hybridization by Harvey, S. C., Kwon, J. Y., Penman, D. J.

“…Summary Cytochrome P450‐aromatase enzyme (CYP19), which catalyses the conversion of androgens to oestrogens, is critical in ovarian differentiation and hence…”
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Variation in size and location of the Ag-NOR in the Atlantic halibut (Hippoglossus hippoglossus) by Ocalewicz, K., Penman, D. J., Babiak, I.

“…The distribution of differentially stained chromatin was studied in the Atlantic halibut ( Hippoglossus hippoglossus ) chromosomes (2n = 48). Four pairs of…”
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Chromosome evolution in African cichlid fish: contributions from the physical mapping of repeated DNAs by Ferreira, I A, Poletto, A B, Kocher, T D, Mota-Velasco, J C, Penman, D J, Martins, C

“…Cichlid fishes have been the subject of increasing scientific interest because of their rapid adaptive radiation that has led to extensive ecological diversity…”
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Analysis of repetitive DNA sequences in the sex chromosomes of Oreochromis niloticus by Harvey, S C, Boonphakdee, C, Campos-Ramos, R, Ezaz, M T, Griffin, D K, Bromage, N R, Penman, P

“…In the Nile tilapia, Oreochromis niloticus, sex determination is primarily genetic, with XX females and XY males. While the X and Y chromosomes (the largest…”
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Karyotype evolution in Tilapia: mitotic and meiotic chromosome analysis of Oreochromis karongae and O. niloticus x O. karongae hybrids by Harvey, S C, Campos-Ramos, R, Kennedy, D D, Ezaz, M T, Bromage, N R, Griffin, D K, Penman, D J

“…The karyotype of Oreochromis species is considered to be highly conserved, with a diploid chromosome complement of 2n = 44. Here we show, by analysis of…”
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Mitochondrial DNA Diversity in Three Populations of the Giant Tiger Shrimp Penaeus monodon by Klinbunga, S, Penman, DJ, McAndrew, BJ, Tassanakajon, A

“…: Mitochondrial DNA restriction fragment length polymorphism (mtDNA-RFLP) was utilized for determination of genetic variation and population structure in…”
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Monosex female production in the silver barb ( Puntius gonionotus Bleeker) by Pongthana, Nuanmanee, Penman, David J, Baoprasertkul, Puttharat, Hussain, Mohammed G, Shahidul Islam, M, Powell, Stephen F, McAndrew, Brendan J

“…This paper describes hormonal masculinisation of genetically female, gynogenetic silver barbs ( Puntius gonionotus) and the results of crosses between such…”
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Comparative performance of growth, biochemical composition and endocrine profiles in diploid and triploid tilapia Oreochromis niloticus L by Hussain, M.G., Rao, G.P.S., Humayun, N.M., Randall, C.F., Penman, D.J., Kime, D., Bromage, N.R., Myers, J.M., McAndrew, B.J.

“…Growth, biochemical composition and endocrine profiles of normal diploid and pressure, heat and cold shock induced triploids of Oreochromis niloticus were…”
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Karyotype analysis of Oreochromis mortimeri (Trewavas) and Sarotherodon melanotheron (Rüppell) by Harvey, S C, Powell, S F, Kennedy, D D, McAndrew, B J, Penman, D J

“…The karyotypes of both Oreochromis mortimeri (Trewavas) and Sarotherodon melanotheron (Rüppell) are shown to consist of 22 pairs of chromosomes (2n = 44). In…”
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Cloning of brain aromatase gene and expression of brain and ovarian aromatase genes during sexual differentiation in genetic male and female Nile tilapia Oreochromis niloticus by Kwon, Joon Yeong, McAndrew, Brendan J., Penman, David J.

“…A brain aromatase gene was identified from the Nile tilapia Oreochromis niloticus. The cDNA sequence of this gene differed from that of the ovarian aromatase…”
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