scholarly journals Does anthropogenic introduction of guppy fish (Poecilia reticulata) impact faunal species diversity and abundance in natural aquatic habitats? A systematic review protocol

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Misaki Sasanami ◽  
John Hustedt ◽  
Neal Alexander ◽  
Olaf Horstick ◽  
Leigh Bowman ◽  
...  
Keyword(s):  
Species Diversity ◽  
Poecilia Reticulata ◽  
Tropical Fish ◽  
Food Sources ◽  
Ecosystem Functions ◽  
Sufficient Evidence ◽  
Aquatic Habitats ◽  
Fish Introduction ◽  
Scientific Review ◽  
Guppy Fish

Abstract Background The guppy fish (Poecilia reticulata) is a tropical fish ancestrally linked to northern South America and the Caribbean. It is known to be very tolerant of and adaptable to new environments, and able to consume multiple food sources, including mosquito larvae. Consequently, guppies have been frequently introduced to non-native ecosystems to control mosquito populations, resulting in near-global distribution. Indeed, due to the increasing need for mosquito-borne disease control, guppy releases will likely continue, however there are concerns about potential adverse impacts on other species, biodiversity, and certain ecosystem functions. The most significant of these is local species extinction, and by extension, reduced biodiversity. Yet, the extent of these impacts has not been evaluated by scientific review. Accordingly, this study will examine and evaluate whether anthropogenic introduction of guppy fish (Poecilia reticulata) has impacts on faunal species diversity and abundance in natural aquatic habitats. The results of this review may have implications for environmental management and policy and inform ecosystem-based integrated vector management and public health policy. Methods Relevant scientific articles will be identified by searching electronic databases. Articles will be included if they report changes or differences, associated with guppy fish introduction, in at least one of these population parameters: (1) abundance of individuals in any species, (2) total abundance of individuals in all species present, (3) species richness, (4) species diversity, and (5) community evenness. Each article will be assessed by at least two independent reviewers against pre-defined inclusion/exclusion criteria. Snowballing reference lists of included articles will be conducted. At least two reviewers will critically appraise all included studies using the Collaboration for Environmental Evidence Critical Appraisal Tool (CEECAT) and any discrepancies will be resolved by discussion between the two or adjudication by a third author if agreement is not reached. Each study will also be subjected to data extraction against pre-defined qualitative and quantitative outcomes and results will be tabulated/presented in figures where appropriate. A meta-analysis will be carried out on outcome parameters with sufficient evidence.

Metagenomic profiling of gut microbiota in urban and rural rats: A comparative study

2021 ◽  
Author(s):  
Rafig GURBANOV ◽  
Uygar KABAOĞLU ◽  
Tuba YAĞCI
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Gut Microbiota ◽  
Bacterial Species ◽  
Rattus Rattus ◽  
Food Sources ◽  
Control Group ◽  
Laboratory Rats ◽  
Food Variety ◽  
Wild Rats

Abstract Mammals have a symbiotic relationship with various microorganisms called microbiota throughout their lives. These microorganisms are known to affect the host's physiology, health, and even mental balance. In the harbor of the densest and most diverse microorganisms in mammals, the curved structure of the intestines and their rich nutrient content are effective. The development of the gut microbiota is regulated by a complex interaction between host and environmental factors, including diet and lifestyle. Herein, it is aimed to elucidate the changes in the gut microbiota of rats living in urban and rural habitats. All taxonomic changes in the gut microbiota of wild rats belonging to Rattus rattus species caught from urban and rural areas of Western Anatolian (Bilecik province) were examined comparatively by 16S rRNA next-generation sequencing technique. Laboratory rats were used as a control group for comparison. Thus, 2000 different bacterial species were identified in gut microbiota. According to the Shannon and Simpsons values ​​calculated, laboratory rats showed the highest species diversity. When the similarities of microbiota profiles were compared with the principal coordinate analysis (PcoA), bacterial populations showed variability among different habitats. The comparison of species richness between the groups with the species rarefaction technique revealed higher species richness in all wild rats, especially in the rural habitat, compared to laboratory rats. Food sources were determined as the most important factor contributing to species richness and diversity. While the increased food variety boosted species richness, species diversity was increased due to the diminished food variety.

scholarly journals Contrasting Population and Diet Influences on Gut Length of an Omnivorous Tropical Fish, the Trinidadian Guppy (Poecilia reticulata)

PLoS ONE ◽  
2015 ◽  
Vol 10 (9) ◽  
pp. e0136079 ◽  
Author(s):  
Eugenia Zandonà ◽  
Sonya K. Auer ◽  
Susan S. Kilham ◽  
David N. Reznick
Keyword(s):  
Poecilia Reticulata ◽  
Tropical Fish ◽  
Trinidadian Guppy ◽  
Gut Length

scholarly journals Food-resource partitioning among fish species from a first-order stream in northwestern Paraná, Brazil

2012 ◽  
Vol 10 (2) ◽  
pp. 389-399 ◽  
Author(s):  
Jislaine Cristina da Silva ◽  
Rosilene Luciana Delariva ◽  
Karine Orlandi Bonato
Keyword(s):  
Resource Sharing ◽  
Poecilia Reticulata ◽  
Food Resource ◽  
Fish Fauna ◽  
Detrended Correspondence Analysis ◽  
Food Sources ◽  
Dietary Overlap ◽  
Order Stream ◽  
First Order ◽  
Allochthonous Resources

This study addressed the feeding ecology of fish fauna from a first-order stream located in a rural area. The purposes were to evaluate the influence of interspecific, seasonal and spatial factors on the diet, examine the dietary overlap, and determine the predominant food sources. Sampling was conducted in December 2007, September 2008, and March 2009, in three 50-m stretches of Itiz stream (upstream, intermediate, and downstream), through electrofishing. A total of 1,102 stomach contents were analyzed from 14 species, by the volumetric method. In general, allochthonous resources were predominant in the diets. Astyanax aff. fasciatus, Astyanax aff. paranae, Astyanax bockmanni, and Bryconamericus aff. iheringi consumed a higher proportion of plant remains, and Bryconamericus stramineus consumed predominantly Hymenoptera. The diets of Cetopsorhamdia iheringi, Characidium aff. zebra, Imparfinis schubarti, and Trichomycterus sp. consisted of aquatic insects, especially immature forms of Trichoptera, Ephemeroptera, Plecoptera, and Diptera. Hypostomus ancistroides, Hisonotus sp., Poecilia reticulata, and Rineloricaria aff. pentamaculata exploited mainly detritus, while Rhamdia quelen used a variety of items, predominantly terrestrial insects. Detrended Correspondence Analysis (DCA) showed a clear distinction among the species, with different morphology and feeding tactics. The Multi-Response Permutation Procedure (MRPP) supported this differentiation, and also indicated significant spatial and temporal variations in the dietary composition; the Indicator Value Method (IndVal) indicated the main items that contributed to these differences. The diet overlap among species was low (< 0.4) to around 78% of pairs, and the mean value did not vary significantly among the sites or between hydrological periods within each site. According to the null model of Pianka’s index, the values for dietary overlap were significantly higher than expected at random, showing evidence of resource sharing. This was related to the availability of allochthonous resources, highlighting the importance of riparian vegetation as a source of these resources for maintaining the fish fauna of the stream.

scholarly journals Biodiversity and ecosystem functions depend on environmental conditions and resources rather than the geodiversity of a tropical biodiversity hotspot

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Christine I. B. Wallis ◽  
Yvonne C. Tiede ◽  
Erwin Beck ◽  
Katrin Böhning-Gaese ◽  
Roland Brandl ◽  
...  
Keyword(s):  
Species Diversity ◽  
Environmental Conditions ◽  
Environmental Variables ◽  
Conservation Management ◽  
Regional Scale ◽  
Ecosystem Functions ◽  
Soil Variables ◽  
Tropical Biodiversity ◽  
Tropical Mountain ◽  
Tropical Mountain Rain Forest

AbstractBiodiversity and ecosystem functions are highly threatened by global change. It has been proposed that geodiversity can be used as an easy-to-measure surrogate of biodiversity to guide conservation management. However, so far, there is mixed evidence to what extent geodiversity can predict biodiversity and ecosystem functions at the regional scale relevant for conservation planning. Here, we analyse how geodiversity computed as a compound index is suited to predict the diversity of four taxa and associated ecosystem functions in a tropical mountain hotspot of biodiversity and compare the results with the predictive power of environmental conditions and resources (climate, habitat, soil). We show that combinations of these environmental variables better explain species diversity and ecosystem functions than a geodiversity index and identified climate variables as more important predictors than habitat and soil variables, although the best predictors differ between taxa and functions. We conclude that a compound geodiversity index cannot be used as a single surrogate predictor for species diversity and ecosystem functions in tropical mountain rain forest ecosystems and is thus little suited to facilitate conservation management at the regional scale. Instead, both the selection and the combination of environmental variables are essential to guide conservation efforts to safeguard biodiversity and ecosystem functions.

scholarly journals DNA Barcoding: A Study of Guppy Fish (Poecilia reticulata) in East Java, Indonesia

2019 ◽  
Vol 11 (2) ◽  
pp. 272-278
Author(s):  
Sucipto Hariyanto ◽  
Hasan Adro’i ◽  
Mahrus Ali ◽  
Bambang Irawan
Keyword(s):  
Dna Barcoding ◽  
Fish Species ◽  
Dna Sequences ◽  
Poecilia Reticulata ◽  
Phylogenetic Reconstruction ◽  
Coi Gene ◽  
West Java ◽  
Advance Research ◽  
Phylogeny And Evolution ◽  
Guppy Fish

Poecilia reticulata is a freshwater fish from the northeastern part of South America and spread widely to various countries in Asia and other continents. However, research about P. reticulate is limited even though it is a well-known fish species in Indonesia. The purpose of study was to identify the fish species of P. reticulata through DNA barcoding using the COI gene to determine the phylogenetic relationships among fish populations in East Java, Indonesia. In a present study, there were eight samples of P. reticulata from four different freshwater locations in East Java. Extraction, amplification, and sequencing of DNA samples were conducted to obtain the genetic data and construct a phylogenetic tree based on DNA sequences. The COI gene is the most popular markers to study genetic populations and phylogeography among the animal kingdom. Our phylogenetic reconstruction showed a clear that there were two groups of P. reticulata. The first group was obtain through species from East Java, Sukabumi, West Java (KU692776.1), Dominican Republic, Pandeglang, Banten and Myanmar. The second group was P. reticulata from southern Africa, Brazil, and Sukabumi, West Java (KU692775.1). The result of this study indicate that the guppy fish in East Java identic with P. reticulata from West Java (KU692776.1), which a widely used in classification based on evolutionary relationships. The findings of this study have important implication for the development of advance research about adaptation, phylogeny, and evolution of fish, especially of guppy fish.

scholarly journals Effect of Different Dietary Protein Levels on Survival Rate and Growth Per-formance of Guppy (Poecilia reticulata)

2021 ◽  
Vol 36 (2) ◽  
pp. 175-181
Author(s):  
Abdalbast H. Fadel ◽  
Awad J. Lamin ◽  
Randa Rajab Ali ◽  
Karema A. Momen
Keyword(s):  
Survival Rate ◽  
Dietary Protein ◽  
Crude Protein ◽  
Growth Response ◽  
Poecilia Reticulata ◽  
Specific Growth ◽  
Protein Levels ◽  
Significant Difference ◽  
Guppy Fish ◽  
Density Rate

This study was carried out to evaluate the growth response of guppy Poecilia reticulata to different dietary protein levels. A total of 72 fry of guppy fish of an initial body weight 0.365± 0.01g were distributed randomly into 60 L aquaria at the density rate of 0.05 g/L. Fish were fed to satiation twice daily for eight weeks with diets containing different dietary protein levels (20%, 30%, or 40%.). The survival rate of guppy was unaffected by increasing dietary protein levels. At the end of the experiment, weight gains (g) ranging from 1.93 to 3.55 were obtained corresponding to 20% and 40% crude protein respectively. The growth performance and feeding efficiencies were significantly improved (P < 0.05) by increasing dietary protein levels. However, no significant difference (P > 0.05) was observed in the specific growth rate of fish that were fed 20% and 30% dietary protein levels. The value of the condition factor was significantly high in fish fed at 40% dietary protein. It can be concluded that a 40% dietary protein level is recommended for guppy fish.

scholarly journals The Acute Single and Mixture Toxicity of Paraquat Dichloride and Deltamethrin to Guppy (Poecillia reticulata)

2021 ◽  
Author(s):  
Rully Adi Nugroho ◽  
Cornelis van Gestel
Keyword(s):  
Dose Level ◽  
Adult Male ◽  
Surface Waters ◽  
Poecilia Reticulata ◽  
Mixture Toxicity ◽  
Concentration Addition ◽  
Independent Action ◽  
Acute Effects ◽  
Reference Models ◽  
Guppy Fish

Abstract Although herbicide and insecticide contamination of surface waters normally occurs in the form of mixtures, the toxicity interactions displayed by such mixtures have only rarely been characterized. This study evaluated the acute effects of single pesticides (paraquat dichloride and deltamethrin, tested in their commercial formulations Gramoxone 276 SL and Decis 25EC) and their equitoxic mixtures on the survival of adult male guppy fish (Poecilia reticulata). Mixture toxicity was evaluated against the reference models of Concentration Addition (CA) and Independent Action (IA). In the single treatments, the 72h LC10 and LC50 values were 1.5 and 6.0 mg a.s. L-1 and 0.53 and 3.6 µg a.s. L-1 for paraquat dichloride and deltamethrin, respectively. The equitoxic mixtures showed significant paraquat dichloride-deltamethrin antagonism, both based on the CA and the IA model, without significant dose-level dependent deviations.

scholarly journals Pengaruh lama perendaman induk ikan guppy (Poecilia reticulate) dalam madu terhadap nisbah kelamin jantan (sex reversal) ikan guppy

2016 ◽  
Vol 3 (2) ◽  
pp. 75
Author(s):  
Nurlina Nurlina ◽  
Zulfikar Zulfikar
Keyword(s):  
Poecilia Reticulata ◽  
Quality Parameters ◽  
Soaking Time ◽  
Male Ratio ◽  
Randomized Design ◽  
Male Sex ◽  
Completely Randomized Design ◽  
Higher Doses ◽  
Brood Fish ◽  
Guppy Fish

Penelitian ini bertujuan untuk mendapatkan waktu perendaman yang terbaik bagi induk ikan guppy (Poecilia reticulata. Penelitian ini dilaksanakan pada bulan November sampai dengan Januari 2015 yang bertempat di Laboratorium Hatchery dan Teknologi Budidaya Fakultas Pertanian, Universitas Malikussaleh. Menggunakan metode eksperimental dan Rancangan penelitian yang digunakan Rancangan Acak Lengkap (RAL) non faktorial dengan 4 perlakuan dan 3 ulangan. Hasil penelitian menunjukkan bahwa Pengaruh lama perendaman yang Berbeda menunjukkan hasil yang berbeda nyata terhadap keberhasilan jenis kelamin jantan ikan guppy. Dengan hasil perlakuan yang terbaik terdapat pada perlakuan C dengan perendaman 15 jam dengan jumlah rata-rata 89.93%. Sedangkan yang terendah terdapat pada perlakuan (A) perendaman 9 jam yaitu (72.32%). Saran Perlu adanya penelitian lanjutan mengenai jantanisasi dengan menggunakan madu dilakukan dengan dosis yang lebih tinggi dan waktu pemaparan singkat, serta perlu di lakukan penelitian mengenai kemampuan ikan guppy untuk menyerap madu yang di berikan.This study aimed to get the best immersion time for the guppy brood fish (Poecilia reticulate). The research was conducted in November 2014 until January 2015 which was held at the Laboratory of Aquaculture Hatchery and Technology, Faculty of Agriculture, University of Malikussaleh. The method of this study wos experimental menthod and analysis used completely randomized design (CRD) with 4 treatments and 3 replications. The results showed that the soaking time influenced significantly to the success of the male sex of guppy fish. The best treatment of soaking time was a 15- hours immersion with the male ratio 89.93%. While the lowest one was obtaimed in treatment of 9 hours immersion which was of (72.32%) of male. Range Value of water quality parameters during the study, namely the temperature was 26.4 - 28. 0 ° C, pH between 6.5 -8.0. There fore Suggestions for further research by using is to implement the higher doses and shorter exposure time, as well as further rescarch is also needed to do on to ability of guppy fish in absor bigy honey.

scholarly journals Penjantanan ikan gapi, Poecilia reticulata Peters, 1859 dengan pemberian ekstrak jeroan teripang pasir (Holothuria scabra)

2019 ◽  
Vol 18 (2) ◽  
pp. 127
Author(s):  
Anugerah Saputra ◽  
Astri Wulandari ◽  
. Ernawati ◽  
Muhammad Amri Yusuf ◽  
Irvan Eriswandy ◽  
...  
Keyword(s):  
Sea Cucumber ◽  
Poecilia Reticulata ◽  
Hormone Treatment ◽  
Positive Control ◽  
Male Fish ◽  
Randomized Design ◽  
Parent Stock ◽  
Completely Randomized Design ◽  
Guppy Fish ◽  
Different Doses

Guppy fish Poecilia reticulata is one of the most popular freshwater ornamental fish species because it is easy to main-tain, and has beautiful variations of color, especially males. One method to produce male guppy is masculinization me-thod. This study aimed to determine the dose of hormone treatment from visceral organ of sea cucumber to the process masculinization of fish guppy. This study used a completely randomized design with the immersion treatment of parent guppy which has been bred into the extract solution of sea cucumber innards for 24 hours with different doses i.e. 0 mg L-1, 10 mg L-1, 20 mg L-1, 30 mg L-1 and 22 mg L-1 (metiltestosterone as positive control). The parameter measured was the percentage of male fish produced. The results showed that although the effect of the treatment was not significantly different, but it can be said to be significantly different to the treatment of 0 mg L-1 (control) to obtain the best result for masculinization of guppy at 30 mg L-1 immersion and the best survival rate on treatment of 0 mg L-1 (control). The re-sults of this study suggest that the masculinization technology on the parent stock can be done using extracts of sea cu-cumber innards which has been considered as waste.AbstrakIkan gapi Poecilia reticulata merupakan salah satu jenis ikan hias air tawar yang banyak digemari karena mudah dipe-lihara, dan memiliki variasi wama yang indah, terutama jantannya. Salah satu metode untuk menghasilkan ikan gapi jantan adalah dengan metode pembalikan kelamin melalui produksi penjantanan ikan gapi. Penelitian ini bertujuan un-tuk menentukan dosis hormon perlakuan ekstrak jeroan teripang pasir terhadap proses penjantanan ikan gapi. Penelitian  ini menggunakan rancangan acak lengkap dengan perlakuan perendaman induk ikan gapi yang telah dipijahkan ke dalam larutan ekstrak jeroan teripang pasir selama 24 jam dengan dosis berbeda, yaitu 0 mg L-1, 10 mg L-1, 20 mg L-1, 30 mg L-1 dan 22 mg L-1 (metiltestosteron sebagai kontrol positif). Parameter yang diukur adalah persentase ikan jantan yang dihasilkan. Hasil penelitian menunjukkan bahwa walaupun pengaruh antarperlakuan yang diberikan tidak berbeda nyata, tetapi dapat dikatakan berbeda nyata terhadap perlakuan 0 mg L-1 (kontrol) sehingga diperoleh hasil terbaik untuk penjantanan ikan gapi pada dosis perendaman 30 mg L-1  dan sintasan terbaik pada perlakuan 0 mg L-1 (kontrol). Hasil penelitian ini memberikan informasi bahwa teknologi penjantanan pada induk ikan gapi dapat dilakukan dengan me-manfaatkan ekstrak jeroan teripang pasir yang selama ini dianggap sebagai limbah.

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