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Relevant bibliographies by topics / Sex determination of birds

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Academic literature on the topic 'Sex determination of birds'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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Journal articles on the topic "Sex determination of birds"

1

Trukhina, Antonina V., and Aleksandr F. Smirnov. "Problems of Birds Sex Determination." Natural Science 06, no. 15 (2014): 1232–40. http://dx.doi.org/10.4236/ns.2014.615111.

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Eaton, T. "Sex determination of monomorphic birds." Veterinary Record 116, no. 2 (January 12, 1985): 58. http://dx.doi.org/10.1136/vr.116.2.58.

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Vucicevic, Milos, Jevrosima Stevanovic, Milanko Sekler, Radmila Resanovic, and Zoran Stanimirovic. "Historical overview of methods for sex determination in birds." Veterinarski glasnik 70, no. 3-4 (2016): 145–57. http://dx.doi.org/10.2298/vetgl1604145v.

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Determining the sex in birds is very difficult, primarily because over 50% of species is monomorphic (no morphological differences between the sexes). Before the application of molecular genetic methods, there were used numerous methods all of which were un?reliable. Because of the importance of the analyses, they have to be reliable, economical, safe and prompt. Highly conserved CHD gene is defined in 1995. on W chromosome in birds, while on Z chromosome it was defined two years later. The difference in the length of the intronic sequences of CHD gene of Z and W chromosomes enables the distinguishing of the sexes after amplification of specific fragments by the application of specific primers. Molecular genetic methods have the supremacy over all the other methods because, ex?cept for being safe (both for birds and people), they provide reliable results, and also can be applied in all bird species.

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Alipanah, M., A. Torkamanzehi, and H. Taghavi. "Sex determination in ostrich (Struthio camelus) using DNA markers." Canadian Journal of Animal Science 90, no. 3 (September 1, 2010): 357–60. http://dx.doi.org/10.4141/cjas09125.

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Production of bird species such as ostrich (Struthio camelus) has been gaining increasing importance in Iran as well as many other countries. Ostrich, similar to many other species of birds, lacks sexual dimorphism, making it difficult to differentiate between males and females, especially at an early age, which can be problematic in breeding programs. Recently developed molecular genetic methods that utilize polymerase chain reaction (PCR) based techniques can facilitate rapid identification of the bird’s sex in these species using a DNA sample, which can be easily extracted from blood or feather pulps. We successfully applied a PCR-based RFLP technique and sex chromosome primers for sex determination in a sample of 30 Ostrich chicks using DNA extracted from blood and feather pulps. Both DNA samples (blood and feather pulps) provided useful results. However, using feather pulps from 1-day-old chicks can provide an easy and inexpensive method for sex determination in ostrich. Key words: Ostrich (struthio camelus), sex determination, sexual dimorphism, polymerase chain reaction, RFLP

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Guioli, Silvana, Sunil Nandi, Debiao Zhao, Jessica Burgess-Shannon, Robin Lovell-Badge, and Michael Clinton. "Gonadal Asymmetry and Sex Determination in Birds." Sexual Development 8, no. 5 (2014): 227–42. http://dx.doi.org/10.1159/000358406.

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Tagirov, M. T. "SEX DETERMINATION AND CONTROL MECHANISMS IN BIRDS." Biotechnologia Acta 6, no. 1 (2013): 62–72. http://dx.doi.org/10.15407/biotech6.01.062.

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Akter, S., SC Das, AS Apu, T. Ahmed, A. Lahiry, A. Afrin, and NJ Nishat. "Early sex determination of Turkey by observation of differences in body weight between male and female." Progressive Agriculture 31, no. 3 (March 1, 2021): 218–26. http://dx.doi.org/10.3329/pa.v31i3.52126.

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The present study was conducted to determine the early sex in turkeys by observation of the differences in body weight between male and female birds. A total of 30-day old black color unsexed poults having almost similar body weight at hatching were considered for the experimentation and housed at the Poultry Farm of Bangladesh Agricultural University, Mymensingh-2202, Bangladesh. All birds were reared up to 12 weeks of age under intensive management with supplementation of commercial broiler starter and grower feeds. Birds were reared under similar management conditions. Significantly higher (p<0.01) body weight was attained in male poults (104g/bird) than the female (90g/bird) at the end of 1st week of age. Similarly, at the end of 2nd week of age higher (p<0.01) body weight attained by male poults (198.31g/bird) than the female (162.13g/bird). At the end of 3rd weeks of age male poults attained higher (p<0.01) body weight (307.23g/bird) than the female (251.33g/bird). After 4 weeks of rearing, male turkeys attained significantly higher (p<0.01) live body weight (424.46g/bird) than the female turkeys (347.87g/bird). The weekly average body weight gains of male and female birds were 94.18g/bird and 76.5g/bird, respectively. Thus, the male and female birds were successfully identified on the basis of differences in their body weight. Weekly feed intake for both the male and female birds was also increased with their age. Up to 4 weeks of age, both the male and female poults consumed same amount of feed (753.46g/bird). The FCR of male and female poults differed non-significantly in 1st, 3rd and 4th week. On the contrary, in 2nd week of age the FCR of male poults (1.60) was significantly lower (p<0.01) than female (2.11). Survivability was 100% up to 4th week of age irrespective of sex of the poults. The birds were reared up to 12 weeks of age until to confirm their sex by observation of the phenotypic appearance. Results of the phenotypic observation of male and female birds correspondence hundred percent accuracy with the results obtained in body weight based differences between male and female birds. It is therefore concluded that farmers can identify male or female poults as early as first week of age on the basis of body weight differences. Progressive Agriculture 31 (3): 218-226, 2020

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Ioannidis, Jason, Gunes Taylor, Debiao Zhao, Long Liu, Alewo Idoko-Akoh, Daoqing Gong, Robin Lovell-Badge, Silvana Guioli, Mike J. McGrew, and Michael Clinton. "Primary sex determination in birds depends on DMRT1 dosage, but gonadal sex does not determine adult secondary sex characteristics." Proceedings of the National Academy of Sciences 118, no. 10 (March 3, 2021): e2020909118. http://dx.doi.org/10.1073/pnas.2020909118.

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In birds, males are the homogametic sex (ZZ) and females the heterogametic sex (ZW). Primary sex determination is thought to depend on a sex chromosome gene dosage mechanism, and the most likely sex determinant is the Z chromosome gene Doublesex and Mab-3–Related Transcription factor 1 (DMRT1). To clarify this issue, we used a CRISPR-Cas9–based monoallelic targeting approach and sterile surrogate hosts to generate birds with targeted mutations in the DMRT1 gene. The resulting chromosomally male (ZZ) chicken with a single functional copy of DMRT1 developed ovaries in place of testes, demonstrating the avian sex-determining mechanism is based on DMRT1 dosage. These ZZ ovaries expressed typical female markers and showed clear evidence of follicular development. However, these ZZ adult birds with an ovary in place of testes were indistinguishable in appearance to wild-type adult males, supporting the concept of cell-autonomous sex identity (CASI) in birds. In experiments where estrogen synthesis was blocked in control ZW embryos, the resulting gonads developed as testes. In contrast, if estrogen synthesis was blocked in ZW embryos that lacked DMRT1, the gonads invariably adopted an ovarian fate. Our analysis shows that DMRT1 is the key sex determination switch in birds and that it is essential for testis development, but that production of estrogen is also a key factor in primary sex determination in chickens, and that this production is linked to DMRT1 expression.

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Widya Pintaka Bayu Putra. "PREDICTING THE GROWTH CURVE OF BODY WEIGHT IN MALEO BIRDS (MACROCEPHALON MALEO)." OISAA Journal of Indonesia Emas 4, no. 2 (June 15, 2021): 59–63. http://dx.doi.org/10.52162/jie.2021.004.02.4.

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Maleo bird (Macrocephalon maleo) is the one of protected bird’s species and originated from Sulawesi island of Indonesia. This study was carried out to obtain the growth curve of body weight (BW) in mixed-sex Maleo birds from hatching to yearling ages. The growth curve in this study was calculated with non-linear regression of Logistic (L) and Gompertz (G) models using CurveExprt 1.4. computer program. The primary data in this study was cited from previous study through a literature study. Research showed that the asymptotic weight (A) in birds was 1825.34 g (L) and 3429.23 g (G). The weight of inflection (Wi) in studied birds were 912.67 g (L) and 1260.75 g (G). The time of inflection (ti) in birds was 8.51 months (L) and 11.00 months (G). The maximum growth rate in birds was 159.72 g/month (L) and 151.29 g/month (G). The coefficient of determination (R2) in both models included of very high category (0.80<R2<1.00) but the lower of standard error (SE) value showed in L model. It can be concluded that the non-linear regression of Logistic model can be used as BW predictors in mixed-sex Maleo birds.

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Kerry, KR, DJ Agnew, JR Clarke, and GD Else. "USe of morphometric parameters for the determination of sex of Adelie penguins." Wildlife Research 19, no. 6 (1992): 657. http://dx.doi.org/10.1071/wr9920657.

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The sex of Addie penguins, Pygoscelis adeliae, may be determined by cloacal examination during the early part of the breeding season. Later in the season it becomes increasingly difficult to determine the sex of penguins by this method as the structures used for identification regress. Discriminant analysis of morphometric characters has been suggested as an alternative. This technique was examined for breeding birds of known sex near Mawson Station, Antarctica. The sex of 89% of breeding birds could be correctly determined by comparing the discriminant score D = 0.582 Bl + 1.118 Bd + 0.219Fw, where Bl is bill length, Bd is bill depth and Fw is flipper width, with a mean discriminant score (MDS) of 55.39. In all, the sexes of 87% were correctly determined by means of length and depth only (D=0.601Bl+ 1.154Bd, MDS=44.96). The sex of juvenile birds could not be determined. Determination of sex by discriminant analysis is shown to give acceptable estimates of morphometric characters divided by sex where only the mean and variance of these variables but not the sexual identity of individual birds is required. Where absolute accuracy in sex determination is required, 80% of the birds in our samples would have to be discarded to be 90% confident of the sex of the remainder.

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Dissertations / Theses on the topic "Sex determination of birds"

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Fridolfsson, Anna-Karin. "Evolutionary studies of sex chromosome linked genes and male-biased mutation in birds /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5740-8.pdf.

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Jones, Kristopher. "Sex-specific environmental sensitivity in birds." Thesis, University of Oxford, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.644894.

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In sexually dimorphic species, the larger sex is often assumed to exhibit greater vulnerability during the period of parental care, due to their assumed greater nutritional requirements. However, results in the literature are mixed regarding sex-biased environmental sensitivity, and it is uncertain to what extent these inconsistencies are due to the shortage of experimental studies in this area, or to flawed assumptions regarding the factors influencing the development of male and female offspring. In this thesis, long term data, along with experimental work were used to test whether habitat quality had sex-specific effects on nestling growth, survival to fledging, immune development, overwinter survival, and recruitment in a population of the great tit. I also investigated whether these sex-specific selective patterns relate to any observed bias in sex ratios. Consistent patterns were observed for greater female sensitivity to poor rearing conditions (relative to males) with regards to their growth; however, males showed greater vulnerability in poor conditions (relative to females) with respect to their post-fledging survival as well as their recruitment success. Investigation of sex allocation suggests that sex ratios become more male biased with improved habitat quality, which appear to correspond to the patterns of selection (e.g., survival and recruitment); however, the overall results suggest that some other factor was likely causing the mismatch observed between growth and survival. Previous work suggests that the development of immunity may influence short and long term fitness, and that males and females may show different priorities in how they allocate resources during development when exposed to harsh conditions (e.g., growth versus immunity). Therefore, I also explored whether rearing conditions had sex-specific effects on the development of immunity, and whether these differences correlate with the survival and recruitment of offspring. Though I was unable to detect any affect of sex, habitat, or their interaction on immune response, I did find that the survival of male and female nestlings varied depending on the habitat in which they were reared, and that those individuals with greater immune responses survived better: female nestlings survived relatively better than males in poorer quality habitats, whereas males survived better than females in good quality habitats, and the survival of male and female nestlings was positively associated with their immune response in those habitats in which they showed overall greater survival. Rearing environment had an opposite effect on the cell mediated immunity (CM I) of male and female nestlings, although these patterns were only evident among nestlings that survived overwinter. Among surviving females, CMI increased with declining rearing conditions, while having the opposite effect among surviving males. Since I found CMI to be important for the survival of nestlings, and found that male and female nestlings showed opposite effects of rearing environment on CMI, it seems plausible that differences in immune function may be at the root of the observed mismatch between results for growth, survival and recruitment. The results from these studies illustrate how sex-specific patterns of vulnerability may be more complex than is commonly assumed. Thus, finally, I examined the support in the literature for three different explanations for sex-specific vulnerability to poor rearing conditions using met a-regression. My results demonstrated that there is no support in the literature for hypotheses based on size or sex alone. However, met aregression revealed a joint influence of sexual size dimorphism and clutch size in explaining patterns of vulnerability. Overall, the results from this thesis suggest that there are many factors which can have sex-specific effects on offspring performance, and that predicting the effects within particular species may be very difficult.

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Bradbury, Richard. "The use of molecular markers of sex to investigate avian sex ratio variation." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296784.

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Pike, Thomas William. "Mechanisms of sex ratio manipulation in birds." Thesis, University of Newcastle Upon Tyne, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.407858.

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Haywood, Sacha. "Physiological determination of clutch-size in birds." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305398.

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Cook, James Mackenzie. "Sex determination and sex ratios in parasitoid wasps." Thesis, Online version, 1991. http://ethos.bl.uk/OrderDetails.do?did=1&uin=uk.bl.ethos.343408.

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Harvey, Simon Crawford. "Sex determination in Strongyloides ratti." Thesis, University of Edinburgh, 1999. http://hdl.handle.net/1842/10942.

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The mechanism of sex determination and the development control of the life-cycle of the gastro-intestinal parasite, Strongyloides ratti was investigated using a combination of genetic and parasitological techniques. Parasitological analysis investigated the effects of intra- and extra-host factors on the development of the free-living phase of the life cycle. An initial analysis of the distribution of infective stages among host faecal pellets showed that they were significantly overdispersed and well described by the negative binomial distribution. This overidspersion was found to occur over a wide range of infection intensities and to increase significantly during infection. Further investigation, coupled with an artificial selection experiment, suggested the existence of two discrete developmental switches; an intra-host sex determination switch and an extra-host free-living female/directly developing iL3 development conversion. Analysis of the effects of host immunity on these developmental switches clarified the way in which the composition of the free-living phase varies over the course of an infection. Increasing host immunity results in a greater proportion of female larvae developing into free-living females rather than into directly developing iL3s. Further evidence suggested that the increase in proportion of female larvae that develop into free-living females with increased host immunity is due to an increased temperature sensitivity of the free-living female/directly developing iL3 developmental conversion. Increasing host immunity also alters the sex ratio, resulting in a greater proportion of larvae developing into free-living males. In addition, increased parasitic female age appears to increase the proportion of larvae that develop into free-living males, but does not increase the proportion of female larvae that develop into free-living females. In conclusion, this thesis has used a combined parasitological and genetic approach to investigate the mechanism of sex determination of S. ratti. This understanding now allows a rational view of the S. ratti life-cycle to be presented. These findings are discussed in relation to previous studies of Strongyloides spp. and further questions raised by this work are discussed.

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High, Samantha. "Sex Determination in Zebrafish: Genetics of Sex and wnt4a." Thesis, University of Oregon, 2016. http://hdl.handle.net/1794/20462.

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Effective reproduction is essential for species survival. Sexual reproduction depends upon functional gonads and reproductive ducts. Zebrafish (Danio rerio) is a popular model organism, but the genetic basis of zebrafish sex determination, gonad development, and reproductive tract development are not fully understood, and understanding this basis could inform about the evolutionary conservation of these genes and the use of zebrafish to investigate and treat reproductive diseases. In chapter I, I give a overview of sex determination systems, gonad development, and reproductive duct development in mammals and fish, and ask how sex is determined and how reproductive ducts develop in zebrafish. In chapter II, I used genome wide association studies (GWAS) to investigate if the genetic basis of sex determination in a variety of zebrafish strains -- two ‘wild-type’ strains cultured for about 30 years in the lab, and four ‘natural’ strains, wild-type strains isolated directly or recently from nature in India -- and identified a sex-associated region on zebrafish chromosome 4 in natural zebrafish strains that was lacking in the lab strains. In chapter III, I investigated whether or not wnt4a is important for zebrafish ovarian development, and found that wnt4a is expressed in the early bipotential gonad and that loss of wnt4a results in male-biased sex ratios, indicating that wnt4a is important for zebrafish ovarian development. In chapter IV, I investigated whether or not wnt4a is important for male reproductive duct development, and found that loss of wnt4a slows the formation of male reproductive ducts and prevents the male fused ducti deferens from connecting to the genital orifice in zebrafish males. Results further showed that wnt4a is expressed in tissue around the site where this connection should occur before and after the connection is formed, revealing a novel wnt4a phenotype in zebrafish that hasn’t been seen thus far, and indicating that wnt4a is necessary for proper male reproductive duct development in zebrafish. This dissertation contains both published and unpublished co-authored material.

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Martinez, Bengochea Anabel Lee. "Insights of sex determination and sex differentiation in fish /." Jaboticabal, 2019. http://hdl.handle.net/11449/190916.

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Orientador: Rafael Henrique Nóbrega
Resumo: A decisão sobre se uma gônada bipotencial se desenvolverá em um testículo ou em um ovário é considerado um estágio crítico na diferenciação sexual dos vertebrados. A administração de esteróides exógenos durante este período pode afetar essa plasticidade, promovendo a diferenciação sexual na direção feminina ou masculina. Dessa forma, o objetivo desta tese foi avaliar os efeitos do tratamento de 17β-estradiol no desenvolvimento de Astyanax altiparanae (lambari), através de análises histológicas e de análises de expressão genica de possíveis genes envolvidos em vias masculinas e femininas. Para isso, larvas com gônadas indiferenciadas foram alimentadas com Artemia contendo diferentes concentrações de estradiol durante 28 dias, desde o 1 dia pós-eclosão (dpe) até o período que precede a diferenciação gonadal. Nossos resultados mostraram que o E2 modificou o fenotípo e a relação sexual histológica e, surpreendentemente, induziu intersexo com com a presença de óvulos nos testículos nas concentrações de 2 e 6 mg de E2/kg de alimento. Esses dados são uma evidência clara de que o tratamento utilizado não foi suficiente para induzir a reversão completa do sexo em A. altiparanae. Em termos de expressão gênica, o tratamento com E2 (6 mg/kg de alimento) produziu uma notável plasticidade gonadal entre machos e fêmeas aos 90 dias após a eclosão (dph). Os machos, denominados “machos resistentes ao estradiol”, superexpressaram os genes masculinos, como dmrt1, sox9 e amh. Dessa forma, nó... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The decision whether a bipotential gonad will become a testis or ovary is considered a critical stage in vertebrate sex determination. Administration of exogenous steroids can affect this plasticity by skewing the sex gonadal differentiation towards a male or female. The aim of this study is to evaluate the effects of 17β-estradiol (E2) diet on Astyanax altiparanae (lambari) development, focusing on the gonadal development and gene expression analysis of possible candidate genes involved in either male or female pathways. Larvae with undifferentiated gonads were fed with steroid diet containing different concentrations of E2 during 28 days, from the mouth opening until a period that precedes the gonadal differentiation. Animals were sampled at 90 days post-hatching (dhp) for histology and gene expression analysis. Our results showed that E2 disrupted both phenotypic and histological sex ratios, and surprisingly, induced intersex with testis-ova in the concentrations of 2 and 6 mg E2/Kg food. This data is a clear evidence that the treatment used was not enough to induce complete sex reversal in A. altiparanae. However, in terms of gene expression, E2 (6mg/Kg food) induced a remarkable gonadal plasticity between males and females at 90 dph. The males, named as E2 resistant males, overexpressed the male-biased genes, such as dmrt1, sox9 and amh. We suggested that these males were able to resist the E2-induced feminization by the expression of genes related to testis differentiat... (Complete abstract click electronic access below)
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Oddie, Kate. "Sex ratio adjustment in birds : evidence from Parus species." Thesis, University of Edinburgh, 2000. http://hdl.handle.net/1842/15551.

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Natural selection favours those individuals capable of biasing investment in male and female offspring when the reproductive value of each sex differs. One way in which parental investment can be skewed is through altering the sex ratio, i.e. the numbers of sons and daughters produced. In birds, this can potentially be achieved at the egg stage or through subsequent modification of the numbers of male and female offspring post-hatching. I investigate both sex ratio biasing mechanism in Parus major and P. caeruleus breeding on the Swedish island of Gotland. From deserted P. major nests where eggs had been numbered as they were laid, egg sex ratio with laying sequence increased from approximately 0.50 to 0.75. However, sample sizes were small and the effect was not statistically significant when analyses were limited to modal clutch sizes. A cross-species analysis of sex ratio variation with laying sequence suggests that females lay eggs of the larger sex first, whether that is males or females. This relationship is expected to be associated with increased levels of brood reduction. Biasing egg sex ratios in this way might increase the reproductive value of a brood if, by reducing nestling competition through mortality, the quality of remaining offspring is enhanced. There was some evidence that this may only be true for small-brooded species. Female body condition of both P. major and P. caeruleus was experimentally manipulated through heating and cooling nest boxes prior to and during egg laying. There was no evidence of alterations to egg sex ratios in relation to female body condition in either species. After hatching, higher mortality of larger male P. major nestlings in poor nesting conditions is expected to result in female biased sex ratios.

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Books on the topic "Sex determination of birds"

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International Symposium on Vertebrate Sex Determination (3rd 2003 Kailua Kona, Hawaii). Vertebrate sex determination. Edited by Lance Valentine. Basel: Karger, 2003.

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Sex determination in fish. Enfield, NH: Science Publishers, 2011.

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Sex chromosomes and sex determination in vertebrates. Boca Raton: CRC Press, 1994.

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service), ScienceDirect (Online, ed. Sex determination and sexual development. San Diego, Calif: Elsevier/Academic Press, 2008.

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Hormonal and Genetic Basis of Sexual Differentation (2010 Miami, Fla.). Hormonal and genetic basis of sexual differentiation disorders and hot topics in endocrinology: Proceedings of the 2nd world conference. Edited by New Maria I. 1928- and Simpson Joe Leigh 1943-. New York, N.Y: Springer Science+Business Media, 2011.

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Chadwick, Derek, and Jamie Goode, eds. The Genetics and Biology of Sex Determination. Chichester, UK: John Wiley & Sons, Ltd, 2002. http://dx.doi.org/10.1002/0470868732.

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Scherer, Gerd, and Michael Schmid, eds. Genes and Mechanisms in Vertebrate Sex Determination. Basel: Birkhäuser Basel, 2001. http://dx.doi.org/10.1007/978-3-0348-7781-7.

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Sex determination, differentiation, and intersexuality in placental mammals. Cambridge: Cambridge University Press, 1995.

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Huseva, I. S. I͡O︡n i i͡a︡na: Ėtsi͡u︡dy pa henetytsy i ėvali͡u︡tsyi polu. Minsk: Navuka i tėkhnika, 1995.

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Biologie de l'homosexualité: On naît homosexuel, on ne choisit pas de l'être. Wavre: Mardaga, 2010.

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Book chapters on the topic "Sex determination of birds"

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Kuroiwa, Asato. "Sex Determination and Differentiation in Birds." In Diversity and Commonality in Animals, 391–405. Tokyo: Springer Japan, 2018. http://dx.doi.org/10.1007/978-4-431-56609-0_19.

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Clinton, Michael, and Lynne C. Haines. "An overview of factors influencing sex determination and gonadal development in birds." In Experientia Supplementum, 97–115. Basel: Birkhäuser Basel, 2001. http://dx.doi.org/10.1007/978-3-0348-7781-7_6.

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Potter, Sarah J., Deepti Lava Kumar, and Tony DeFalco. "Sex Determination." In Endocrinology, 1–49. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-29456-8_5-1.

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Pandian, T. J. "Sex Determination." In Reproduction and Development in Echinodermata and Prochordata, 163–69. Boca Raton, FL : CRC Press, Taylor & Francis Group, [2018] | Series: Reproduction and development in aquatic invertebrates ; volume 3 | “A science publishers book.”: CRC Press, 2018. http://dx.doi.org/10.1201/9780815364733-6.

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Potter, Sarah J., Deepti Lava Kumar, and Tony DeFalco. "Sex Determination." In Endocrinology, 169–216. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-44441-3_5.

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Kowles, Richard. "Sex Determination and Sex Linkage." In Solving Problems in Genetics, 39–63. New York, NY: Springer New York, 2001. http://dx.doi.org/10.1007/978-1-4613-0205-6_2.

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Dunford, James C., Louis A. Somma, David Serrano, C. Roxanne Rutledge, John L. Capinera, Guy Smagghe, Eli Shaaya, et al. "Environmental Sex Determination." In Encyclopedia of Entomology, 1347. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6359-6_5005.

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Wuertz, Sven, Hilal Güralp, Martin Pšenička, and Mikhail Chebanov. "Sex Determination in Sturgeon." In Sex Control in Aquaculture, 645–68. Chichester, UK: John Wiley & Sons, Ltd, 2018. http://dx.doi.org/10.1002/9781119127291.ch33.

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Rodriguez-Granados, Natalia Yaneth, Afef Lemhemdi, Fadi Abou Choucha, David Latrasse, Moussa Benhamed, Adnane Boualem, and Abdelhafid Bendahmane. "Sex Determination in Cucumis." In Genetics and Genomics of Cucurbitaceae, 307–19. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/7397_2016_32.

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Abdel-Hamid, Ibrahim A., Ezzat S. Elsobky, and Moustafa A. Elsaied. "Disorders of Sex Determination." In Genetics of Male Infertility, 279–99. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-37972-8_18.

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Conference papers on the topic "Sex determination of birds"

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Ataei, Abdol Hossain, and Figen Kırkpınar. "Application of In-Ovo Injection of Some Substances for Manipulation of Sex and Improving Performance in Chicken." In International Students Science Congress. Izmir International Guest Student Association, 2021. http://dx.doi.org/10.52460/issc.2021.006.

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Abstract:

In intensive production, freshly hatched cockerels are culled in the layer hatchery (7 billion males each year), On the other hand, for meat production rearing female birds has not economic benefits because of male broiler chicks have a faster growth rate and better feed efficiency than females. In this regards several methods are being developed for sex determination in the chick embryo during the incubation period. But these methods need to be rapid, cost-efficient, and suitable practical for commercial use. Additionally, sex determination should be done before pain perception has evolved in chick embryos. Biotechnology by in ovo technique to sex determination of between male and female chicks or sex reversal could improve production and eliminate ethical dilemmas for poultry industries. In birds, the differentiation of embryonic gonads is not determined by genetic gender with the certainty that occurs in mammals and can be affected by early treatment with a steroid hormone. During the development of the chick embryo, the genotype of the zygote determines the nature of the gonads, which then caused male or female phenotype. The differentiation of gonads during the period called the "critical period of sexual differentiation" is accompanied by the beginning of secretion of sexual hormones. Namely, any change in the concentration of steroid hormones during the critical period affects the structure of the gonads. Many synthetic anti-aromatases such as federazole and non-synthetic in plants, mushrooms, and fruits containing natural flavonoids have been used in the experiments in ovo injection of anti-aromatase had no negative effect on the growth performance of sexual reversal female chickens. In conclusion, administration of an aromatase inhibitor causes testicular growth in the genetic female gender, and estrogen administration leads to the production of the left ovotestis in the genetic male gender. Therefore, in the early stages of embryonic development, sexual differentiation can be affected by changing the ratio of sexual hormones. In this review, effects of some substances applied by in ovo injection technique on sex reversal and performance in chicks.

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Meisel, Richard. "Sex chromosomes and sex determination in muscid flies." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.106939.

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Katsuma, Susumu. "Sex determination pathways in lepidopteran insects." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.92934.

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Beukeboom, Leo W. "Diversity of insect sex determination mechanisms." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.92936.

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Marec, Frantisek. "Role of sex chromosomes in sex determination of moths and butterflies." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.92757.

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Abdullah, Hadi, Muhammad Mahadi Abdul Jamil, and Faridah Mohd Nor. "Automated haversian canal detection for histological sex determination." In 2017 IEEE Symposium on Computer Applications & Industrial Electronics (ISCAIE). IEEE, 2017. http://dx.doi.org/10.1109/iscaie.2017.8074952.

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SILVA ALVES, LUIZA, ESTELA GALVÃO DE OLIVEIRA, Paulo Henrique Ferreira Caria, and CRISTIANO MANOEL. "Mandible branch assessment as sex determination for human identification." In XXIV Congresso de Iniciação Científica da UNICAMP - 2016. Campinas - SP, Brazil: Galoa, 2016. http://dx.doi.org/10.19146/pibic-2016-51337.

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Yang, Wen, Xiamixiding Reziwanguli, Jiachen Xu, Piao Wang, Jiabei Hu, and Xiaoning Liu. "Sex Determination of Skull Based on Fuzzy Decision Tree." In 4th Workshop on Advanced Research and Technology in Industry (WARTIA 2018). Paris, France: Atlantis Press, 2018. http://dx.doi.org/10.2991/wartia-18.2018.4.

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Torres, Maria Fernanda, Lisa S. Mathew, Candice Purchase, Yasmin A. Mohamoud, and Joel A. Malek. "Mapping and Sequencing of Sex Determination Genes in Phoenix Dactylifera." In Qatar Foundation Annual Research Conference Proceedings. Hamad bin Khalifa University Press (HBKU Press), 2016. http://dx.doi.org/10.5339/qfarc.2016.eepp2787.

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Mircea, Ioan Gabriel. "A fuzzy decision tree based method for skeletal sex determination." In 2016 IEEE 11th International Symposium on Applied Computational Intelligence and Informatics (SACI). IEEE, 2016. http://dx.doi.org/10.1109/saci.2016.7507418.

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Reports on the topic "Sex determination of birds"

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Wanek, Veronica. A Qualitative Analysis for Sex Determination in Humans Utilizing Posterior and Medial Aspects of the Distal Humerus. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.5455.

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