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пт., 26/09/2014 - 20:47

#167066

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Россия
Москва, Центр, м. Китай-город

Сообщения: 5398

Poeser F.N. From the Amazonriver to the Amazon molly and back again: dissertatie — Amsterdam: IBED, Universiteit van Amsterdam, 2003. — 180 p.
на англ.
ISBN 90-76894-32-9

pdf:

Thesis [77,5 MB]
Cover
Titlepage
Table of Contents
Titlepage
Introduction Pre-Hennigian taxonomy of Poecilia
Chapter 1. Re-establishment and redescription of Poecilia vandepolli van Lidth de Jeude, 1887 (Pisces: Poeciliinae), with comments on related species
Chapter 2 Nonrandom variation in Poecilia marcellinoi n. sp., and P. salvatoris Regan, 1907 in El Salvador (Pisces, Poeciliidae)
Chapter 3 The role of character displacement in the speciation of Central American members of the genus Poecilia (Poeciliidae).
Chapter 4 Poecilia kykesis nom. nov., a new name for Mollienesia petenensis Günther, 1866, and redescription, revalidation and the designation of a lectotype for P. petenensis Günther, 1866 (Teleostei: Poeciliidae)
Chapter 5 Geographic variation in Poecilia Bloch and Schneider, 1801 (Teleostei: Poeciliidae), with descriptions of three new species and lectotypes for P. dovii Günther, 1866 and for P. vandepolli van Lidth de Jeude, 1887
Chapter 6 An original view on the scientific name of the guppy, Poecilia reticulata Peters, 1859
Chapter 7. Character development and evolutionary mechanisms in Poecilia
Chapter 8 Pseudolimia gen. nov., a new monotypic genus for Limia heterandria Regan, 1913 (Teleostei: Poeciliidae)
Chapter 9. A phylogenetic analysis of Poecilia
Chapter 10. The Evolution, Taxonomy and Biogeography of Poecilia Bloch and Schneider, 1801 in Central America.
Chapter 11 Taxonomy of Poecilia Bloch and Schneider, 1801
Summary & samenvatting
Acknowledgements
Bibliography of F.N. Poeser
Appendix 1 A catalogue of genera considered closely related or synonymous with Poecilia.
Appendix 2 Key to the subgenera and species of Poecilia
Stellingen
Cover

чт., 10/07/2014 - 13:24

#164602

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Россия
Москва, Центр, м. Китай-город

Сообщения: 5398

Краткий библиографический список научных публикаций советских учёных о гуппи [статьи]
Бляхер Л.Я. Y-хромосома и определение пола // М.: ТЛЭБ. — Том II. — 1926. — С. 299.
Бляхер Л.Я. Зависимость самцовых признаков от половой железы у Lebistes reticulatus. I. Сообщение. Исчезновение окраски у самцов в связи с атрофией гонад // М.: ТЛЭБ. — Том I. — 1926. — С. 81.
Бляхер Л.Я. Зависимость самцовых признаков от половой железы у Lebistes reticulatus. II. Сообщение. Случай гермафродитизма у Lebistes // М.: ТЛЭБ. — Том I. — 1926. — С. 90.
Бляхер Л.Я. Материалы по генетике Lebistes reticulatus Peters [I ] // М.: ТЛЭБ. — Том III. — 1927. — С. 139.
Бляхер Л.Я. Материалы по генетике Lebistes reticulatus [II] // М.: ТЛЭБ. — Том IV. — 1928. — С. 245.
Бляхер Л.Я. Обзор новейшей литературы по признакам пола у рыб // М.: ТЛЭБ. — Том I. — 1926. — С. 219.
Бляхер Л.Я. Случай гермафродитизма у Lebistes // М.: ТЛЭБ. — Том I. — 1926. — С. 90.
Кирпичников В.С. Аутосомальные гены у Lebistes reticulatus и проблема возникновения генетического опредления пола // М.: Биол. Жур. — Том IV, вып. 2. — 1935. — С. 343.
Натали В. Ф. и А. И. К вопросу о локализации генов в Х- и Y-хромосомах у Lebistes reticulatus // М.: Ж. эксп. биол. — Том VII, вып. 1. — 1931. — С. 41.

Самохвалова и Эфроимсон (реферат), Demerec M., A possible explanation for Winge's findings in Lebistes reticulatus // М.: ТЛЭБ. — Том VI. — 1931. — Б.с. [?]

Принятые сокращения:
Биол. Жур. — Биологический журнал
Ж. эксп. биол. — Журнал экспериментальной биологии
ТЛЭБ — Tp. лабор. эксп. биол. Моск. зооп. — Труды лаборатории экспериментальной биологии Московского зоопарка

вс., 11/05/2014 - 01:35

#163322

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Россия
Москва, Центр, м. Китай-город

Сообщения: 5398

Kottler Verena A., Koch Iris, Flötenmeyer Matthias, Hashimoto Hisashi, Weigel Detlef, Dreyer Christine
Multiple Pigment Cell Types Contribute to the Black, Blue, and Orange Ornaments of Male Guppies (Poecilia reticulata)
PLoS ONE 9(1): e85647. doi:10.1371/journal.pone.0085647
Published: January 22, 2014
(pdf или онлайн)

Аннотация

The fitness of male guppies (Poecilia reticulata) highly depends on the size and number of their black, blue, and orange ornaments. Recently, progress has been made regarding the genetic mechanisms underlying male guppy pigment pattern formation, but we still know little about the pigment cell organization within these ornaments. Here, we investigate the pigment cell distribution within the black, blue, and orange trunk spots and selected fin color patterns of guppy males from three genetically divergent strains using transmission electron microscopy. We identified three types of pigment cells and found that at least two of these contribute to each color trait. Further, two pigment cell layers, one in the dermis and the other in the hypodermis, contribute to each trunk spot. The pigment cell organization within the black and orange trunk spots was similar between strains. The presence of iridophores in each of the investigated color traits is consistent with a key role for this pigment cell type in guppy color pattern formation.

вс., 11/05/2014 - 00:46

#163318

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Россия
Москва, Центр, м. Китай-город

Сообщения: 5398

Martyn Ulrike, Weigel Detlef, Dreyer Christine
In Vitro Culture of Embryos of the Guppy, Poecilia reticulata
Developmental Dynamics 235:617–622, 2006. © 2005 Wiley-Liss, Inc.
DOI 10.1002/dvdy.20664
(pdf, 1.4 MB)

Аннотация

The rich variation in adult color patterns of male guppies (Poecilia reticulata) has attracted the attention of geneticists and ecologists for almost a century. Studies on their embryogenesis, however, have been limited by the fact that guppies are live bearers. We have observed normal development after explantation of guppy embryos from the ovary of pregnant females at various times after last parturition, and found that development of each batch of eggs is slightly asynchronous, most likely due to asynchronous fertilization.
We have cultured explanted embryos in vitro and continuously observed their development. Although embryos explanted a few days after fertilization survived up to 4 weeks in culture, they did not complete their development. In contrast, embryos explanted at late stages of gestation could hatch and develop to fertile adults. Our embryo culture techniques overcome some of the limitations of using livebearers as study objects, and they allow continuous observation of and accessibility to live embryos at all stages.
Key words: Poecilia reticulata; embryo culture; asynchronous development

сб., 10/05/2014 - 21:05

#163310

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Россия
Москва, Центр, м. Китай-город

Сообщения: 5398

Endler John A.
Natural Selection on Color Patterns in Poecilia reticulata
Evolution, Volume 34, Issue 1(Jan.,1980), 76-91.
(pdf, 1.9 MB)

Аннотация

All too often in evolutionary biology we are led to speculate or infer the mode of action of natural selection; we usually do not know why some individuals are more adaptive than others. Very often attempts to measure natural selection are unsuccessful, leading to heated arguments abouf the relative importance of selection, genetic drift, and epistasis in evolution (Lewontin, 1974). Until we know more about how and why natural selection occurs, attempts to measure it are quixotic, and discussions of its importance are theandric.
It is no coincidence that most of the successful studies of natural selection have dealt with animal color patterns; it should be obvious which color patterns are more adaptive in the presence of visually hunting predators. The adaptive significance of warning coloration and mimicry of distasteful species has been worked out (Cott, 1940; Wickler, 1968; Edmunds, 1974; Rothschild, 197 5; Turner, 1977). But most species are neither distasteful nor mimetic; most have inconspicuous or cryptic color patterns in their natural habitats (Poulton, 1890; Thayer, 1909; Cott, 1940; Endler, 1978).
Most field and experimental studies have shown that the overall color or tone of inconspicuous species matches or approximates the background (DiCesnola, 1904; Sumner, 1934, 1935; Isley, 1938; Popham, 1942; Dice, 1947; Kettlewell, 1956, 1973; Turner, 1961; Kaufman, 1974; Wicklund, 1975; Curio, 1976), but they treated species with solid colors or have ignored color pattern. A color pattern can be regarded as a mosaic of colored spots or patches of various sizes, colors and shapes. Some striking examples of color pattern polymorphisms remain largely unexplained, for example in Partula and Cepaea (Clarke and Murray, 1971; Jones et al., 1977). In three fish species, the frequency of a color pattern element is correlated with the presence or absence of visually directed predation: Gasterosteus aculeatus (McPhail, 1969; Semler, 1971; Moodie, 1972), Nothobranchius guntheri (Haas, 1976a, b), and Cichlasoma citrinellum (Barlow, 1976; Barlow and Ballin, 1976; McKaye and Barlow, 1976). But these simple pattern polymorphisms tell us very little about the factors which determine color patterns as a whole. The purpose of this paper is to show how various aspects of color patterns are moulded by natural selection.

вс., 27/04/2014 - 16:02

#162802

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Россия
Москва, Центр, м. Китай-город

Сообщения: 5398

Kong, X.F., Li, J.T., Wen, S.X.
Complete mitochondrial genome of Japanese guppy, Poecilia reticulata
Unpublished
результаты исследования (Январь, 2014).

пт., 25/10/2013 - 23:33

#155176

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Россия
Москва, Центр, м. Китай-город

Сообщения: 5398

Lawal M.O., Edokpayi C.A. and Osibona A.O. Food and Feeding Habits of the Guppy, Poecilia reticulata, from Drainage Canal Systems in Lagos, Southwestern Nigeria
West African Journal of Applied Ecology, vol. 20 (2), 2012:1—9.
(pdf)

Аннотация

The food and feeding habits of the Guppy, Poecilia reticulata, from drainage canal systems in Lagos Metropolis, Nigeria, was investigated over a period of 24 months. Fish samples were collected monthly from 15 study sites. A total of 2400 fish stomachs were analyzed using the numerical and frequency of occurrence methods. P. reticulata fed mainly on algae, organic detritus, diatoms, mosquito larvae parts, protozoan, zooplankton and fish parts while algae form the most abundant and important food item, constituting 79.03% of food items by numerical and 33.17% by occurrence of stomachs examined. Amongst the algae, Ulothrix sp. was the most preferred, constituting 33.17% by numerical and 20.82% by occurrence. The least eaten food item was fish parts constituting 4.46% by numerical and 1.19% by occurrence. There was a significant difference (P < 0.05) in the number of algae and mosquito larvae consumed, while there was no significant difference (P > 0.05) in the number of other food items consumed for both seasons. However, by occurrence method there was no significant difference (P > 0.05) in food items consumed for both seasons. The three size classes of P. reticulata exhibited similar food habits with the presence of eight categories of food items in their stomachs. The largest size class ate more of algae, organic detritus and fish parts, followed by the medium size class while the small size class ate less of these food items. The species is an opportunistic benthopelagic omnivores, whose preference for food fluctuates with season, with a peak in diversity of food types occurring in the rainy season.

чт., 22/08/2013 - 01:44

#153093

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Россия
Москва, Центр, м. Китай-город

Сообщения: 5398

Kottler Verena A., Fadeev Andrey, Weigel Detlef, Dreye Christine . Pigment Pattern Formation in the Guppy, Poecilia reticulata, Involves the Kita and Csf1ra Receptor Tyrosine Kinases
Genetics. 2013 July; 194(3): 631–646.
doi: 10.1534/genetics.113.151738
(pdf или онлайн)

Аннотация

Males of the guppy (Poecilia reticulata) vary tremendously in their ornamental patterns, which are thought to have evolved in response to a complex interplay between natural and sexual selection. Although the selection pressures acting on the color patterns of the guppy have been extensively studied, little is known about the genes that control their ontogeny. Over 50 years ago, two autosomal color loci, blue and golden, were described, both of which play a decisive role in the formation of the guppy color pattern. Orange pigmentation is absent in the skin of guppies with a lesion in blue, suggesting a defect in xanthophore development. In golden mutants, the development of the melanophore pattern during embryogenesis and after birth is affected. Here, we show that blue and golden correspond to guppy orthologs of colony-stimulating factor 1 receptor a (csf1ra; previously called fms) and kita. Most excitingly, we found that both genes are required for the development of the black ornaments of guppy males, which in the case of csf1ra might be mediated by xanthophore–melanophore interactions. Furthermore, we provide evidence that two temporally and genetically distinct melanophore populations contribute to the adult camouflage pattern expressed in both sexes: one early appearing and kita-dependent and the other late-developing and kita-independent. The identification of csf1ra and kita mutants provides the first molecular insights into pigment pattern formation in this important model species for ecological and evolutionary genetics.
Keywords: guppy, color pattern, pigment pattern development, Kita, Csf1ra

сб., 18/05/2013 - 03:02

#150417

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Россия
Москва, Центр, м. Китай-город

Сообщения: 5398

Fraser et al.: Sequencing and characterization of the guppy (Poecilia reticulata) transcriptome.
BMC Genomics 2011 12:202.
doi:10.1186/1471-2164-12-202
(pdf)

Аннотация

Background: Next-generation sequencing is providing researchers with a relatively fast and affordable option for
developing genomic resources for organisms that are not among the traditional genetic models. Here we present a de novo assembly of the guppy (Poecilia reticulata) transcriptome using 454 sequence reads, and we evaluate potential uses of this transcriptome, including detection of sex-specific transcripts and deployment as a reference for gene expression analysis in guppies and a related species. Guppies have been model organisms in ecology, evolutionary biology, and animal behaviour for over 100 years. An annotated transcriptome and other genomic tools will facilitate understanding the genetic and molecular bases of adaptation and variation in a vertebrate species with a uniquely well known natural history.
Results: We generated approximately 336 Mbp of mRNA sequence data from male brain, male body, female brain, and female body. The resulting 1,162,670 reads assembled into 54,921 contigs, creating a reference transcriptome for the guppy with an average read depth of 28×. We annotated nearly 40% of this reference transcriptome by searching protein and gene ontology databases. Using this annotated transcriptome database, we identified candidate genes of interest to the guppy research community, putative single nucleotide polymorphisms (SNPs), and male-specific expressed genes. We also showed that our reference transcriptome can be used for RNA-sequencing-based analysis of differential gene expression. We identified transcripts that, in juveniles, are regulated differently in the presence and absence of an important predator, Rivulus hartii, including two genes implicated in stress response. For each sample in the RNA-seq study, >50% of high-quality reads mapped to unique sequences in the reference database with high confidence. In addition, we evaluated the use of the guppy reference transcriptome for gene expression analyses in a congeneric species, the sailfin molly (Poecilia latipinna). Over 40% of reads from the sailfin molly sample aligned to the guppy transcriptome.
Conclusions: We show that next-generation sequencing provided a reliable and broad reference transcriptome.
This resource allowed us to identify candidate gene variants, SNPs in coding regions, and sex-specific gene expression, and permitted quantitative analysis of differential gene expression.

сб., 18/05/2013 - 02:37

#150416

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Россия
Москва, Центр, м. Китай-город

Сообщения: 5398

Harpaz Sheenan, Slosman Tatiyana & Segev Ran. Effect of feeding guppy fish fry (Poecilia reticulata)
diets in the form of powder versus flakes
Aquaculture Research, 2005, 36, 996—1000.
(pdf)

Аннотация

The effects of feeding guppy (Poecilia reticulata) fry a diet offered as either powder or £akes on their growth and survival were tested over a period of 8 weeks. The results show that the growth of both male and female fish was considerably enhanced when the diet was
presented in the form of a finely ground powder compared with a £ake form. Final average weights of fish given a diet containing the exact same ingredients (44.9% protein and 6.1% fat), from the same
batch of raw materials in the powdered form were 280.0±12.1mg compared with 114.6±19.9mg for the diet given in the form of flakes. In a diet that had a higher fat level (45.1% protein and 10.6% fat), the difference in final weight attained was even more
dramatic: 303.9±16.7mg for the powder-fed fish
compared with 92.6±12.5mg for the flake-fed fish.
The coefficient of variance in the fish fed a £ake diet was signi¢cantly higher than that exhibited in the treatments fed the powder feed. The ability of the ¢sh to consume the food in a rapid manner, preventing leaching of vital nutrients from the feed before being engulfed by the ¢sh probably led to the better
growth results exhibited by the fish given the powdered food.
Keywords: guppy, Poecilea reticulata, feed preparation, growth

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