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Journal articles on the topic 'Guppies'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Breden, Felix. "Guppies." Current Biology 16, no. 20 (2006): R865—R866. http://dx.doi.org/10.1016/j.cub.2006.09.017.

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Chang, Ying, Shenjun Wu, Junying Li, Haigang Bao, and Changxin Wu. "Identification of Candidate Genes for Red-Eyed (Albinism) Domestic Guppies Using Genomic and Transcriptomic Analyses." International Journal of Molecular Sciences 25, no. 4 (2024): 2175. http://dx.doi.org/10.3390/ijms25042175.

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Guppies are small tropical fish with brightly colored bodies and variable tail shapes. There are two phenotypes of domestic guppy eye color: red and black. The wild type is black-eyed. The main object of this study was to identify candidate genes for the red-eyed phenotype in domestic guppies. We hope to provide molecular genetic information for the development of new domestic guppy strains. Additionally, the results also contribute to basic research concerning guppies. In this study, 121 domestic guppies were used for genomic analysis (GWAS), and 44 genes were identified. Furthermore, 21 dome

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Goldman, Jack A., Laurence E. A. Feyten, Indar W. Ramnarine, and Grant E. Brown. "Sender and receiver experience alters the response of fish to disturbance cues." Current Zoology 66, no. 3 (2019): 255–61. http://dx.doi.org/10.1093/cz/zoz050.

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Abstract Predation is a pervasive selection pressure, shaping morphological, physiological, and behavioral phenotypes of prey species. Recent studies have begun to examine how the effects of individual experience with predation risk shapes the use of publicly available risk assessment cues. Here, we investigated the effects of prior predation risk experience on disturbance cue production and use by Trinidadian guppies Poecilia reticulata under laboratory conditions. In our first experiment, we demonstrate that the response of guppies from a high predation population (Lopinot River) was depende

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SCHELKLE, BETTINA, RYAN S. MOHAMMED, MICHAEL P. COOGAN, et al. "Parasites pitched against nature: Pitch Lake water protects guppies (Poecilia reticulata) from microbial and gyrodactylid infections." Parasitology 139, no. 13 (2012): 1772–79. http://dx.doi.org/10.1017/s0031182012001059.

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SUMMARYThe enemy release hypothesis proposes that in parasite depleted habitats, populations will experience relaxed selection and become more susceptible (or less tolerant) to pathogenic infections. Here, we focus on a population of guppies (Poecilia reticulata) that are found in an extreme environment (the Pitch Lake, Trinidad) and examine whether this habitat represents a refuge from parasites. We investigated the efficacy of pitch in preventing microbial infections in Pitch Lake guppies, by exposing them to dechlorinated water, and reducing gyrodactylid infections on non-Pitch Lake guppies

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V., Sai Sruthi Dr. T. Jagadeeshwara Chari D. Ramkumar. "A Study On "Culturing Paramecium and Analyzing Their Impact on Guppies' Growth Rates" At GDC(A) Siddipet, Telangana." International Journal of Scientific Research and Technology 1, no. 2 (2024): 7–12. https://doi.org/10.5281/zenodo.13683470.

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Paramecium is, a unicellular ciliate, and its potential as a nutritional supplement in the diet of guppies (*Poecilia reticulata). Paramecium were cultured in a controlled environment using standard growth media to ensure optimal population density. Subsequently, the guppies were divided into experimental and control groups, with the former being fed Paramecium in addition to their regular diet, while the latter received only the standard fish feed. Over a period of six weeks, the growth rates of the guppies were monitored and analyzed, focusing on parameters such as weight gain, length increa

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Brown, Grant E., and Jean-Guy J. Godin. "Chemical alarm signals in wild Trinidadian guppies (Poecilia reticulata)." Canadian Journal of Zoology 77, no. 4 (1999): 562–70. http://dx.doi.org/10.1139/z99-035.

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We investigated the presence and possible function of chemical alarm signals (alarm pheromones) in wild Trinidadian guppies (Poecilia reticulata) using laboratory, trapping, and direct field observational methods. In laboratory experiments, female guppies from a population exposed to high predation significantly increased their shoaling, dashing, and freezing behaviours and significantly reduced area use when exposed to the skin extract of sympatric female guppies. When exposed to the skin extract of females from a low-predation population, female guppies from a high-predation population exhib

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Brown, Joseph A., Peter H. Johansen, Patrick W. Colgan, and R. Alastair Mathers. "Changes in the predator-avoidance behaviour of juvenile guppies (Poecilia reticulata) exposed to pentachlorophenol." Canadian Journal of Zoology 63, no. 9 (1985): 2001–5. http://dx.doi.org/10.1139/z85-294.

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The effects of pentachlorophenol on the predator-avoidance behaviour of the guppy (Poecilia reticulate) in response to largemouth bass (Micropterus salmoides) predation was investigated. There were no consistent effects of pentachlorophenol on habitat use or general behaviour of the guppies. In the presence of predators, all guppies occurred significantly more often alone, motionless, and in the top third of the water column in the nonopen areas. Nine variables associated with predator efficiency were monitored to determine which treatment groups of guppies were easiest to capture. The bass ha

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RUCHIN, Alexander B. "EFFECT OF ILLUMINATION ON GROWTH AND BEHAVIOUR OF GUPPY, POECILIA RETICULATA." Periódico Tchê Química 17, no. 35 (2020): 338–45. http://dx.doi.org/10.52571/ptq.v17.n35.2020.30_ruchin_pgs_338_345.pdf.

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The guppy, Poecilia reticulata, is a model for many ichthyological studies. The effect of light on juvenile growth has been studied on the Poecilia reticulata. Studies have been conducted in twenty-liter aquariums. For experiments on the fish arbitrary choice of light intensity (light transmission behavior), it was used radiant pans of organic glass 150 x 15 x 15 cm divided by transparent semi-partitions into ten communicating compartments. The specific growth rate has been determined after the experiments. It increases with the light level increasing. The growth rate is minimal at 0 lx in all

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9

Mohammed, Ryan Simon, Cock van Oosterhout, Bettina Schelkle, Joanne Cable, and Mark McMullan. "Upstream guppies (Poecilia reticulata, Peters, 1859) go against the flow." Biota Neotropica 12, no. 3 (2012): 68–72. http://dx.doi.org/10.1590/s1676-06032012000300006.

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Guppies (Poecilia reticulata Peters 1859) in lakes and from captive-bred populations are predicted to show little rheotaxis compared to conspecifics in a stream environment that are regularly exposed to flash floods associated with involuntary downstream migration. Here we test this hypothesis using an artificial stream, examining guppies of two wild riverine populations, one lake population, and one ornamental strain. Guppies from the most upstream riverine habitat show the most pronounced rheotaxis and are less likely to be swept downstream during flooding events. However, there is no signif

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Brown, Grant E., Pierre J. C. Chuard, Ebony E. M. Demers, Indar W. Ramnarine, Douglas P. Chivers, and Maud C. O. Ferrari. "Personality and the retention of neophobic predator avoidance in wild caught Trinidadian guppies." Behaviour 155, no. 4 (2018): 265–78. http://dx.doi.org/10.1163/1568539x-00003488.

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Abstract Neophobic predator avoidance allows prey to reduce the risk of predation but is costly in terms of reduced foraging or courtship opportunities if the novel cues do not represent an actual threat. Consequently, neophobic responses to novel cues should wane with repeated exposures in the absence of an actual threat. We tested the prediction that individual personality traits shape the retention of neophobic predator avoidance in wild-caught guppies. Using extinction trials, we demonstrate that personality (measured as latency to escape or approach a novel object) did not influence the i

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Brown, Grant E., Chris K. Elvidge, Camille J. Macnaughton, Indar Ramnarine, and Jean-Guy J. Godin. "Cross-population responses to conspecific chemical alarm cues in wild Trinidadian guppies, Poecilia reticulata: evidence for local conservation of cue production." Canadian Journal of Zoology 88, no. 2 (2010): 139–47. http://dx.doi.org/10.1139/z09-127.

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Within freshwater fishes, closely related species produce alarm cues that are chemically similar, leading to conserved antipredator responses. Similar conservation trends are predicted for species with geographically isolated populations. Here, we tested this hypothesis with the guppy ( Poecilia reticulata Peters, 1859) from two populations within the Aripo River, Trinidad. Free-ranging guppies in the Lower Aripo (high-predation population) exhibited more risk-aversive inspection behaviour towards a fish predator model paired with the alarm cues of guppies collected from the same population ve

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Valero, Alejandra, Constantino Macías Garcia, and Anne E. Magurran. "Heterospecific harassment of native endangered fishes by invasive guppies in Mexico." Biology Letters 4, no. 2 (2008): 149–52. http://dx.doi.org/10.1098/rsbl.2007.0604.

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Persistent courtship by male Trinidadian guppies ( Poecilia reticulata ) is costly for conspecific females. Since male guppies are known to attempt matings with other poeciliid females, we asked whether persistent courtship is also directed towards morphologically similar but phylogenetically distant females encountered following invasion. Skiffia bilineata is one of several endangered viviparous goodeids from Central México, whose remaining habitats are increasingly shared with invasive guppies. Experiments in which guppy sex ratios were manipulated to vary the proportion of heterospecific to

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13

Goodey, Wayne, and N. R. Liley. "The influence of early experience on escape behaviour in the guppy (Poecilia reticulata)." Canadian Journal of Zoology 64, no. 4 (1986): 885–88. http://dx.doi.org/10.1139/z86-132.

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Guppies (Poecilia reticulata) with or without experience of being chased by adult conspecifics were exposed first to a model "aerial predator" to assess the magnitude of their escape response, then to live piscivorous fish to assess their escape ability. Early experience had some influence on response magnitude but a greater influence on escape ability. Guppies that were chased when young by adult conspecifics required significantly more attacks before they were captured than either guppies that had no experience of being chased or guppies exposed to only visual or chemical cues associated wit

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14

Seghers, Benoni H., and Anne E. Magurran. "Population differences in the schooling behaviour of the Trinidad guppy, Poecilia reticulata: adaptation or constraint?" Canadian Journal of Zoology 73, no. 6 (1995): 1100–1105. http://dx.doi.org/10.1139/z95-131.

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Populations of the guppy Poecilia reticulata in Trinidad vary markedly in their tendency to school. In many cases this variation in behaviour can be attributed to variation in the predation regime: guppies that co-occur with the pike cichlid, Crenicichla alta, spend more time schooling and form larger schools than their counterparts from low-risk habitats. However, the association between schooling tendency and predation risk is not ubiquitous. In this paper we document the behaviour of guppies from populations in two Trinidad drainages. Guppies from the (Lower) Aripo River (in the Caroni drai

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De Serrano, Alexandra R., Cameron J. Weadick, Anna C. Price, and F. Helen Rodd. "Seeing orange: prawns tap into a pre-existing sensory bias of the Trinidadian guppy." Proceedings of the Royal Society B: Biological Sciences 279, no. 1741 (2012): 3321–28. http://dx.doi.org/10.1098/rspb.2012.0633.

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Sensory bias, a predisposition towards certain signals, has been implicated in the origin of mate preferences in some species. A risk associated with these biases is that they can be co-opted by predators as sensory lures. Here we propose that the orange spots on the brown pincers of a diurnal, predatory species of prawn function as lures for Trinidadian guppies, which have a sensory bias for orange. We exposed female guppies to (i) a life-like model of this Trinidadian prawn with orange, green or no spots on the pincers or (ii) a live, novel (non-Trinidadian) crustacean (crayfish), also with

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16

Nugroho, Anwari Adi, Ahmad Muzaki, Arista Indah Anggraini, and Dwi Haryanti. "STUDI PERILAKU INTERAKSI IKAN GUPPY JANTAN DAN BETINA (Poecilia reticulata ) PADA MASA REPRODUKSI." TEKNOSAINS: MEDIA INFORMASI SAINS DAN TEKNOLOGI 15, no. 3 (2021): 287. http://dx.doi.org/10.24252/teknosains.v15i3.20582.

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Guppy fish is one type of ornamental fish that has many types. Various body shapes and colors make guppy fish one of the favorite types of ornamental fish to fill the aquarium. The pattern of care and easy breeding makes guppy fish widely cultivated by the community. This study aims to determine the interaction behavior of male and female guppies (Poecilia reticulata) during reproduction. This research was conducted at the practitioner's house, in December 2020. This research used a descriptive exploratory research which was carried out by observing the behavior of male and female guppies dire

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17

DARGENT, FELIPE, ADAM R. REDDON, WILLIAM T. SWANEY, et al. "Demasculinization of male guppies increases resistance to a common and harmful ectoparasite." Parasitology 142, no. 13 (2015): 1647–55. http://dx.doi.org/10.1017/s0031182015001286.

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SUMMARYParasites are detrimental to host fitness and therefore should strongly select for host defence mechanisms. Yet, hosts vary considerably in their observed parasite loads. One notable source of inter-individual variation in parasitism is host sex. Such variation could be caused by the immunomodulatory effects of gonadal steroids. Here we assess the influence of gonadal steroids on the ability of guppies (Poecilia reticulata) to defend themselves against a common and deleterious parasite (Gyrodactylus turnbulli). Adult male guppies underwent 31 days of artificial demasculinization with th

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18

Camacho-Cervantes, M., A. F. Ojanguren, A. E. Deacon, I. W. Ramnarine, and A. E. Magurran. "Association tendency and preference for heterospecifics in an invasive species." Behaviour 151, no. 6 (2014): 769–80. http://dx.doi.org/10.1163/1568539x-00003169.

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Animals gain benefits by forming groups with phenotypically and behaviourally similar individuals. The most common groups are homogenous, composed by conspecifics, although in some cases associations of similar organisms of different species have been reported when individuals benefit from it. In this study, we tested the prediction that the Trinidadian guppy, Poecilia reticulata, a fish that has successfully invaded at least 70 countries, will shoal with heterospecifics. We measured shoaling tendency and shoal companion preference in wild-caught female guppies when they encounter two heterosp

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Burns, James G., Arthy Saravanan, and F. Helen Rodd. "Rearing Environment Affects the Brain Size of Guppies: Lab-Reared Guppies have Smaller Brains than Wild-Caught Guppies." Ethology 115, no. 2 (2009): 122–33. http://dx.doi.org/10.1111/j.1439-0310.2008.01585.x.

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20

Seghers, Benoni H., and Anne E. Magurran. "Predator Inspection Behaviour Covaries With Schooling Tendency Amongst Wild Guppy, Poecilia Reticulata, Populations in Trinidad." Behaviour 128, no. 1-2 (1994): 121–34. http://dx.doi.org/10.1163/156853994x00073.

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AbstractWhen fish inspect a predator they incur risk. One way of reducing the cost of inspection is to approach predators in groups large enough to benefit from the safety in numbers advantages of schooling. In a survey of nine populations of guppies, Poecilia reticulata, in their native streams in Trinidad, we observed marked variation in schooling behaviour. Guppies from sites also inhabited by a major predator, the pike cichlid, Crenicichla alta, devoted more time to schooling than those from less dangerous locations where the cyprinodont Rivulus hartii was present. We found a strong correl

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Montalbano, Giulia, Cristiano Bertolucci, and Tyrone Lucon-Xiccato. "Cognitive Phenotypic Plasticity: Environmental Enrichment Affects Learning but Not Executive Functions in a Teleost Fish, Poecilia reticulata." Biology 11, no. 1 (2022): 64. http://dx.doi.org/10.3390/biology11010064.

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Many aspects of animal cognition are plastically adjusted in response to the environment through individual experience. A remarkable example of this cognitive phenotypic plasticity is often observed when comparing individuals raised in a barren environment to individuals raised in an enriched environment. Evidence of enrichment-driven cognitive plasticity in teleost fish continues to grow, but it remains restricted to a few cognitive traits. The purpose of this study was to investigate how environmental enrichment affects multiple cognitive traits (learning, cognitive flexibility, and inhibito

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Camacho-Cervantes, Morelia, Constantino Macías Garcia, Alfredo F. Ojanguren, and Anne E. Magurran. "Exotic invaders gain foraging benefits by shoaling with native fish." Royal Society Open Science 1, no. 3 (2014): 140101. http://dx.doi.org/10.1098/rsos.140101.

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Freshwater habitats are under increasing threat due to invasions of exotic fish. These invasions typically begin with the introduction of small numbers of individuals unfamiliar with the new habitat. One way in which the invaders might overcome this disadvantage is by associating with native taxa occupying a similar ecological niche. Here we used guppies ( Poecilia reticulata ) from a feral population in Mexico to test the prediction that exotic shoaling fish can associate with heterospecifics, and that they improve their foraging efficiency by doing so. Guppies have invaded the Mexican High P

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Liley, N. R., and P. H. Luyten. "Geographic Variation in the Sexual Behaviour of the Guppy, Poecilia Reticulata (Peters)." Behaviour 95, no. 1-2 (1985): 164–79. http://dx.doi.org/10.1163/156853985x00109.

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AbstractThe guppy, Poecilia reticulata, exhibits marked intraspecific variation in behaviour and morphology and occurs over a wide range of natural environments in Trinidad, West In-dies. In this paper we examine the hypotheses that: 1) in clear mountain headstream waters in Trinidad, where Rivulus hartii is the only major aquatic predator, sexual selection has favoured the evolution of visual components of courtship behaviour in the guppy, and 2) in turbid lowland rivers with numerous aquatic predators selection has resulted in greater dependence upon non-visual components of courtship. Guppi

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Kamaszewski, Maciej, Marek Skrobisz, Maciej Wójcik, et al. "The Role of Transcription Factors in Gonad Development and Sex Differentiation of a Teleost Model Fish—Guppy (Poecilia reticulata)." Animals 10, no. 12 (2020): 2401. http://dx.doi.org/10.3390/ani10122401.

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The guppy (Poecilia reticulata) is one of the world’s most popular ornamental fish. Due to lecithotrophic viviparous, it is commonly used in toxicological studies and environmental monitoring. This study aimed to investigate the molecular mechanisms of gonad development and differentiation during guppy ontogenesis. The study mainly focused on the role and localization of potential specific sex markers and transcription factors: Sox9, Dmrt1, Erβ. For histological analysis, guppies of both sexes were collected at 1, 60, and 360 dph (day post-hatching). The gonads morphology and immunohistochemis

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Rop, Charles J. "Foraging Behavior in Guppies." American Biology Teacher 63, no. 3 (2001): 194–97. http://dx.doi.org/10.1662/0002-7685(2001)063[0194:fbig]2.0.co;2.

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26

Reznick, David. "Lessons learned from guppies." Trends in Ecology & Evolution 21, no. 1 (2006): 13–14. http://dx.doi.org/10.1016/j.tree.2005.09.001.

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27

Winkleman, Michael. "If Guppies Could Fly." Journal of Business Strategy 16, no. 1 (1995): 4. http://dx.doi.org/10.1108/eb039670.

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Kaya, Doğukan, Ercüment Genç, Şenay Sarıca, and Musa Yavuz. "Dietary Supplementation of Solid-state Fermented Yellow Mealworm (Tenebrio molitor) Larvae Meal Enriched by Lactobacillus sp. in Guppy (Poecilia reticulata)." Turkish Journal of Agriculture - Food Science and Technology 13, no. 1 (2025): 181–93. https://doi.org/10.24925/turjaf.v13i1.181-193.6915.

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The current study examined the dietary solid-state fermented yellow mealworm (Tenebrio molitor) larvae meal inclusion on growth performance, gut microbiota, body composition, liver and intestinal histology and histomorphometric parameters in the guppy (Poecilia reticulata) for 84 days. Guppies were fed diets included with no supplementation (C); 4 g/kg yellow mealworm larva meal (G1), 4 g/kg solid-state fermented with Lactobacillus brevis yellow mealworm larvae meal (G2), 4 g/kg solid-state fermented with Lactobacillus plantarum yellow mealworm larvae meal (G3), the combination of 2 g/kg solid

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Hockley, F. A., C. A. M. E. Wilson, A. Brew, and J. Cable. "Fish responses to flow velocity and turbulence in relation to size, sex and parasite load." Journal of The Royal Society Interface 11, no. 91 (2014): 20130814. http://dx.doi.org/10.1098/rsif.2013.0814.

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Riverine fish are subjected to heterogeneous flow velocities and turbulence and may use this to their advantage by selecting regions that balance energy expenditure for station holding while maximizing energy gain through feeding opportunities. This study investigated microhabitat selection by guppies Poecilia reticulata in terms of flow characteristics generated by hemisphere boulders in an open channel flume. Velocity and turbulence influenced the variation in swimming behaviour with respect to size, sex and parasite intensity. With increasing body length, fish swam further and more frequent

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Wainwright, P. C. "Motor correlates of learning behaviour: feeding on novel prey by pumpkinseed sunfish (Lepomis gibbosus)." Journal of Experimental Biology 126, no. 1 (1986): 237–47. http://dx.doi.org/10.1242/jeb.126.1.237.

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The functional basis of learning in prey capture was investigated in the pumpkinseed sunfish (Lepomis gibbosus). Feeding performance of sunfishes was assessed when the fish were first fed a novel, elusive prey (guppies) and compared with their performance after several weeks of experience with capturing guppies. During these feedings electromyographic recordings were made to document the pattern of activity in four jaw muscles at the strike. With experience, the L. gibbosus improved their ability to capture guppies, and several changes in the pattern of muscle activity were associated with thi

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Bierbach, David, Tim Landgraf, Pawel Romanczuk, et al. "Using a robotic fish to investigate individual differences in social responsiveness in the guppy." Royal Society Open Science 5, no. 8 (2018): 181026. http://dx.doi.org/10.1098/rsos.181026.

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Responding towards the actions of others is one of the most important behavioural traits whenever animals of the same species interact. Mutual influences among interacting individuals may modulate the social responsiveness seen and thus make it often difficult to study the level and individual variation in responsiveness. Here, open-loop biomimetic robots that provide standardized, non-interactive social cues can be a useful tool. These robots are not affected by the live animal's actions but are assumed to still represent valuable and biologically relevant social cues. As this assumption is c

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Renčko, Andrej, Silvia Ondrašovičová, Drahomíra Sopková, and Jana Ondrašovičová. "Effect of gamma-irradiation on the differential leukocyte count in fish Poecilia reticulata." Acta Veterinaria Brno 83, no. 3 (2014): 209–12. http://dx.doi.org/10.2754/avb201483030209.

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The study investigated the effect of a single gamma-irradiation with a 60Co source at a dose of 20 Gy (1.05 Gy/min) on the guppy Poecilia reticulata (females, n = 60), which has not been determined before in this fish. We observed food intake, clinical symptoms, pathological-anatomical and histological changes and differential leukocyte count in the irradiated guppies compared to the control ones. In the first days, timidity and lethargy were observed. The most prominent clinical symptoms observed were exophthalmia, emaciation and intravital haemorrhages. Livers of irradiated guppies were char

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Elvidge, Chris K., Indar Ramnarine, and Grant E. Brown. "Compensatory foraging in Trinidadian guppies: Effects of acute and chronic predation threats." Current Zoology 60, no. 3 (2014): 323–32. http://dx.doi.org/10.1093/czoolo/60.3.323.

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Abstract In response to acute predation threats, prey may sacrifice foraging opportunities in favour of increased predator avoidance. Under conditions of high or frequent predation risk, such trade-offs may lead to reduced fitness. Here, we test the prediction that prey reduce the costs associated with lost opportunities following acute predation threats by exhibiting short-term compensatory foraging responses. Under semi-natural conditions, we exposed female guppies Poecilia reticulate from high and low predation risk sites to one of three levels of acute predation threat (high, intermediate

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Goldman, Jack A., Annick Singh, Ebony E. M. Demers, Laurence E. A. Feyten, and Grant E. Brown. "Does donor group size matter? The response of guppies (Poecilia reticulata) and convict cichlids (Amatitlania nigrofasciata) to disturbance cues from conspecific and heterospecific donors." Canadian Journal of Zoology 97, no. 4 (2019): 319–25. http://dx.doi.org/10.1139/cjz-2018-0170.

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Prey are under immense pressure to make context-specific, behavioural decisions. Prey use public information to reduce the costs associated with making inappropriate decisions. Chemical cues are commonly used by aquatic vertebrates to assess local threats and facilitate behavioural decision making. Previous studies on chemosensory assessment of risk have largely focused on damage-released alarm cues, with the cues released by disturbed or stressed prey (i.e., disturbance cues) receiving less attention. Disturbance cues are “early-warning signals” common among aquatic vertebrates that may warn

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Urku, Cigdem, and Mustafa Kemal Meydan. "DETECTION OF CO-INFECTION IN DISEASED GUPPY (POECILIA RETICULATA): TETRAHYMENA SP., MYXOBOLUS SP. AND OPPORTUNISTIC BACTERIA." Archives of Veterinary Medicine 17, no. 2 (2024): 59–72. https://doi.org/10.46784/e-avm.v17i2.379.

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The guppy (Poecilia reticulata) is one of the world's most popular freshwater aquarium fish. The present study aims to determine the cause of mortality in guppies obtained from the ornamental fish farm in Istanbul province and to detect tissue damage. Externally diseased guppies showed sloughing scales and large ulcerative skin lesions on the body surface. Bacteriological inoculation from internal organs was made onto Tryptic Soy Agar (TSA). After incubation, isolated bacteria were identified as Aeromonas hydrophila and Vibrio parahaemolyticus according to their physiological, morphological, a

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Sari, Intan Wahyuning Purnama, Zulfa Nabila Fitria, Muhammad Mirandy Pratama Sirat, and Fajar Shodiq Permata. "Comparative of Hepatocytes and Intestinal Villi in Zebra Fish (Danio rerio) and Guppy Fish (Poecilia reticulata): Novel Insights into Species-Specific Fish for Animal Model." UTTAR PRADESH JOURNAL OF ZOOLOGY 45, no. 18 (2024): 390–401. http://dx.doi.org/10.56557/upjoz/2024/v45i184457.

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The zebra fish (Danio rerio) is widely recognized as a prominent model organism in research. In contrast, Indonesia, with its abundant aquatic resources, frequently encounters the guppy (Poecilia reticulata) in its freshwater ecosystems. Notably, guppies exhibit reproductive rates akin to those of zebra fish. This study endeavors to compare the histomorphometric characteristics of the liver and intestinal organs between zebra fish and guppies. The research involved 9 zebra fish and 9 guppies obtained from local breeders in Malang, East Java. Following euthanasia, histological samples were prep

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BREDEN, FELIX, and GREGORY STONER. "Sexual selection in guppies defended." Nature 334, no. 6179 (1988): 201–2. http://dx.doi.org/10.1038/334201c0.

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Fitzpatrick, J. L., and J. P. Evans. "Postcopulatory inbreeding avoidance in guppies." Journal of Evolutionary Biology 27, no. 12 (2014): 2585–94. http://dx.doi.org/10.1111/jeb.12545.

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Kelley, J. L., J. A. Graves, and A. E. Magurran. "Familiarity breeds contempt in guppies." Nature 401, no. 6754 (1999): 661–62. http://dx.doi.org/10.1038/44314.

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Becher, S. A., and A. E. Magurran. "Gene flow in Trinidadian guppies." Journal of Fish Biology 56, no. 2 (2000): 241–49. http://dx.doi.org/10.1111/j.1095-8649.2000.tb02103.x.

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Nanda, Indrajit, Susanne Schories, Namita Tripathi, et al. "Sex chromosome polymorphism in guppies." Chromosoma 123, no. 4 (2014): 373–83. http://dx.doi.org/10.1007/s00412-014-0455-z.

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Doleželová, Petra, Stanislava Mácová, Vladimíra Pištěková, Zdeňka Svobodová, Iveta Bedáňová, and Eva Voslářová. "Comparison of the sensitivity of Danio rerio and Poecilia reticulata to silver nitrate in short-term tests." Interdisciplinary Toxicology 1, no. 2 (2008): 200–202. http://dx.doi.org/10.2478/v10102-010-0040-0.

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Comparison of the sensitivity ofDanio rerioandPoecilia reticulatato silver nitrate in short-term testsThe aim of this study is to assess the acute toxicity of silver nitrate in adult zebra fish and adult guppies and to compare the sensitivity of these species to this compound. Silver is a naturally occurring element in our environment and it combines with other elements such as sulfide, chloride, and nitrate. Silver, in the form of silver nitrate, is one of the most toxic metals affecting freshwater fish. Industry, particularly photographical and electrotechnical, is the major contributor of s

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Scabra, Andre Rachmat, Sofhia Dewi Arini, and Muhammad Junaidi. "PENGARUH BUBUK DAUN KETAPANG (Terminalia catappa) TERHADAP PERFORMA PERTUMBUHAN IKAN GUPPY (Poecilia reticulata)." JURNAL PERIKANAN TROPIS 9, no. 2 (2022): 91. http://dx.doi.org/10.35308/jpt.v9i2.3970.

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Indonesia has biodiversity and one of which is the diversity of ornamental fish species both marine and freshwater. One type of freshwater ornamental fish is quite in demand, namely guppies. This study aimed to analyze the effect of adding tropical almond leaf powder to the growth performance of guppies. This study used an experimental method with the addition of tropical almond leaf powder. The experimental design used was a completely randomized design (CRD) consisting of 5 treatments, namely treatment A (without the addition of tropical almond leaf powder/control), B (tropical almond leaf p

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Sektiana, Sinar Pagi, Muhammad Fiqi Zulendra, Rina Rina, and Sinung Rahardjo. "THE ADDITION OF COCONUT WATER THROUGH FEED EFFECTIVE ON MASCULINIZATION OF GUPPY FISH (Poecilia reticulata)." Indonesian Aquaculture Journal 19, no. 2 (2025): 189. https://doi.org/10.15578/iaj.19.2.2024.189-200.

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The production of male guppies is more desirable due to it higher selling value than females. One way to produce male guppies is change it sex, namely masculinization which can be enhanced through the addition of coconut water, with high potassium level. Potassium can convert all cholesterol in the larvae into pregnenolone, which functions to convert estrogen into progesterone and produces testosterone. Hormones required in sex change can be supplemented by the oral method through feed. The research, which was conducted from November 2022 - March 2023, was divided into two stages, first is to

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Dahlan, Achmad, and Andri Nur Tantiono. "ANALISIS FAKTOR PSIKOLOGIS, HARGA, DAN KUALITAS PELAYANAN DALAM MENGAMBIL KEPUTUSAN PEMBELIAN IKAN GUPPY PADA ERA PANDEMI COVID-19 DI SOLO RAYA." Journal of Management : Small and Medium Enterprises (SMEs) 16, no. 3 (2023): 571–81. http://dx.doi.org/10.35508/jom.v16i3.8882.

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This study aims to determine whether the independent variables, namely psychological factors, price, and service quality, affect the dependent variable Purchase Decision of Guppies during the COVID-19 pandemic in Solo Raya. This research includes correlational quantitative research, using 97 respondents from consumers who had bought Guppies in Solo Raya. This research uses a multiple linear regression analysis technique. The results of this study concluded that psychological factors, price, and service quality simultaneously affect purchase decisions. Partially, psychological factors and servi

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Reznick, David N., Ronald D. Bassar, Joseph Travis, and F. Helen Rodd. "LIFE-HISTORY EVOLUTION IN GUPPIES VIII: THE DEMOGRAPHICS OF DENSITY REGULATION IN GUPPIES (POECILIA RETICULATA)." Evolution 66, no. 9 (2012): 2903–15. http://dx.doi.org/10.1111/j.1558-5646.2012.01650.x.

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Anka, Ishrat Zahan, Jakia Sultana Jothi, Joyshri Sarker, Avijit Talukder, and Md Sadrul Islam. "Growth performance and survival of guppy (Poecilia reticulata): different formulated diets effect." Asian Journal of Medical and Biological Research 2, no. 3 (2016): 451–57. http://dx.doi.org/10.3329/ajmbr.v2i3.30117.

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Growth performance of guppy fries was assessed by providing four different types of formulated diets comprised of some available ingredients (fish meal (FM), prawn meal (PM), meat and bone meal (MBM), wheat flour (WF), corn flour (CF), starch (S) and soya bean oil) and the result was compared with supplied commercial diet as control. After 30 days experimental period, diet 1 (FM: PM=6:1) showed the best result in case of length gain (0.48 cm) in guppies whereas lowest (0.01 cm) was reported from diet 2 (PM: MBM= 4:3). The body weight gain in guppies was also found higher (0.004 g) in diet 1 th

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Kimbell, Helen S., and Lesley J. Morrell. "‘Selfish herds’ of guppies follow complex movement rules, but not when information is limited." Proceedings of the Royal Society B: Biological Sciences 282, no. 1816 (2015): 20151558. http://dx.doi.org/10.1098/rspb.2015.1558.

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Under the threat of predation, animals can decrease their level of risk by moving towards other individuals to form compact groups. A significant body of theoretical work has proposed multiple movement rules, varying in complexity, which might underlie this process of aggregation. However, if and how animals use these rules to form compact groups is still not well understood, and how environmental factors affect the use of these rules even less so. Here, we evaluate the success of different movement rules, by comparing their predictions with the movement seen when shoals of guppies ( Poecilia

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Lucon-Xiccato, Tyrone, Elia Gatto, and Angelo Bisazza. "Male and female guppies differ in problem-solving abilities." Current Zoology 66, no. 1 (2019): 83–90. http://dx.doi.org/10.1093/cz/zoz017.

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Abstract In a number of species, males and females have different ecological roles and therefore might be required to solve different problems. Studies on humans have suggested that the 2 sexes often show different efficiencies in problem-solving tasks; similarly, evidence of sex differences has been found in 2 other mammalian species. Here, we assessed whether a teleost fish species, the guppy, Poecilia reticulata, displays sex differences in the ability to solve problems. In Experiment 1, guppies had to learn to dislodge a disc that occluded a feeder from which they had been previously accus

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Stephenson, Jessica F., and Michael Reynolds. "Imprinting can cause a maladaptive preference for infectious conspecifics." Biology Letters 12, no. 4 (2016): 20160020. http://dx.doi.org/10.1098/rsbl.2016.0020.

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Recognizing and associating with specific individuals, such as conspecifics or kin, brings many benefits. One mechanism underlying such recognition is imprinting: the long-term memory of cues encountered during development. Typically, juveniles imprint on cues of nearby individuals and may later associate with phenotypes matching their ‘recognition template’. However, phenotype matching could lead to maladaptive social decisions if, for instance, individuals imprint on the cues of conspecifics infected with directly transmitted diseases. To investigate the role of imprinting in the sensory eco

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