scholarly journals Cellular development of the germinal epithelium during the gametogenic cycle of the golden mussel Limnoperna fortunei (Bivalvia: Mytilidae)

2016 ◽  
Vol 64 (2) ◽  
pp. 521 ◽  
Author(s):  
Claudenice Dei Tos ◽  
Irani Quagio Grassiotto ◽  
Talita Sarah Mazzoni
Keyword(s):  
Invasive Species ◽  
Control Strategies ◽  
Morphological Data ◽  
Germinal Epithelium ◽  
Early Prophase ◽  
Natural Environments ◽  
Limnoperna Fortunei ◽  
Reproductive Life ◽  
Reproductive Phases ◽  
Golden Mussel

<p>The golden mussel <em>Limnoperna fortunei</em> is an invasive species that has quickly dispersed and colonized several potential different habitats distributed all over the world, causing environmental and economic impacts. The control of the species depends on knowledge of its reproductive aspects. Approximately 1 200 specimens of <em>L. fortunei</em> were sampled periodically on the upper Paraná River floodplain (Brazil) from March 2010 to December 2012. Thus, in order to contribute to a better understanding of the reproductive aspects of <em>L. fortunei</em>, using high resolution histology, we described the cellular dynamic of the male and female germinal epithelium during the annual reproductive life history of this species. Based on the activity of the germinal epithelium and consequent germ cell development, this study has resulted in the recognition of the following reproductive phases: Developing, Spawning Capable, Regressing and Regenerating. In the characterization of these phases the following germ cells were described for males: spermatogonia, primary and secondary spermatocytes, spermatids and spermatozoa. Cell nests, oogonia, early prophase oocytes, previtellogenic oocytes and vitellogenic oocytes (early vitellogenic oocytes, middle vitellogenic oocytes and full-grown oocytes) were described for females. The morphological data and reproductive parameters shown here confirm how informative the cellular dynamic of the germinal epithelium is for the understanding of the cyclic gonadal events during the adult reproductive life of the mollusk in general. These knowledge about the gametogenesis of invasive species can become a fundamental tool for the development of control strategies and implementation of programs to decrease their proliferation in natural environments.</p>

Cellular development of the germinal epithelium during the female and male gametogenesis of Chaetodon striatus (Perciformes: Chaetodontidae)

Zygote ◽  
2020 ◽  
Vol 28 (4) ◽  
pp. 291-299
Author(s):  
Isabelle Leite Bayona Perez ◽  
Talita Sarah Mazzoni ◽  
Irani Quagio-Grassiotto
Keyword(s):  
Reproductive Activity ◽  
Gonadal Development ◽  
Reproductive Period ◽  
Morphological Data ◽  
Germinal Epithelium ◽  
Cellular Dynamics ◽  
Spawning Period ◽  
Reproductive Life ◽  
Early Primary ◽  
Reproductive Phases

SummaryButterflyfish Chaetodon striatus is highly sought after in the marine ornamental aquarium, although studies about its reproductive biology are scarce. Therefore, to contribute to a better understanding of the reproductive aspects of C. striatus, we describe in detail with the use of high resolution histology the cellular dynamics of the germinal epithelium during the reproductive life history of this species. Based on the activity of the germinal epithelium, this study describes different stages of the gonadal development, similar to the reproductive phases found in other fish, to determine the reproductive period of C. striatus. In characterization of gonadal development, the following germ cells are described for males: spermatogonia, spermatocytes, spermatids and spermatozoa. Oogonia, early, primary, secondary, full-grown and maturing oocytes are described for females. Female germinal epithelium of C. striatus showed substantial changes over the study period, indicating that there was an active spawning period. Male germinal epithelium also presented relevant alterations, indicating reproductive activity in the testicular lobules. Morphological data confirm how informative was the cellular dynamics of the germinal epithelium for understanding gonadal development during adult reproductive life of fish in general. Although Chaetodon are a popular species, previous studies have only produced superficial and rough histological analyses. Therefore, this study demonstrates important information on germinal epithelium of Chaetodon. This knowledge could be a fundamental tool for development of new strategies for breeding of several species in captivity, especially butterflyfishes.

scholarly journals Toxicity of neem's oil, a potential biocide against the invasive mussel Limnoperna fortunei (Dunker 1857)

2012 ◽  
Vol 84 (4) ◽  
pp. 1065-1071 ◽  
Author(s):  
Patricio J. Pereyra ◽  
Gustavo B. Rossini ◽  
Gustavo Darrigran
Keyword(s):  
Invasive Species ◽  
Toxicity Tests ◽  
Limnoperna Fortunei ◽  
Target Species ◽  
Potential Toxicity ◽  
A Value ◽  
Closed Systems ◽  
The One ◽  
Invasive Mussel ◽  
Golden Mussel

The golden mussel Limnoperna fortunei (Dunker 1857) is one of the most distributed Nuisance Invasive Species (NIS) in South America, and a threat of great concern for the industry of the area. In this study, we carried out toxicity tests made with a Neem's oil solution with L. fortunei larvae and benthonic adults (7, 13 and 19 ± 1 mm). Tests with non-target species (Daphnia magna, Lactuca sativa and Cnesterodon decemmculatus) were also made with the aim to evaluate the potential toxicity of the Neem's solution in the environment. The LC100 of Neem's solution obtained for larvae was 500 µl/L, a value much higher than the one obtained for D. magna and C. decemmaculatus. Thus, we recommend that it should not be used in open waters. However, since the adults were killed in 72 h and the larvae in 24 h, this product can be used in closed systems, in man-made facilities.

scholarly journals The scientific literature on Limnoperna fortunei (Dunker 1857) from 1982 to 2012

2014 ◽  
Vol 86 (3) ◽  
pp. 1373-1384 ◽  
Author(s):  
FABIANA G. BARBOSA
Keyword(s):  
Invasive Species ◽  
Aquatic Ecosystems ◽  
Observational Studies ◽  
Scientific Literature ◽  
Scientific Information ◽  
Scientometric Analysis ◽  
Limnoperna Fortunei ◽  
Freshwater Bivalve ◽  
Collaborative Studies ◽  
Golden Mussel

Limnoperna fortunei (golden mussel) is a freshwater bivalve native to Southeast Asia, but is becoming an invasive species in several aquatic ecosystems in the world. In this study, a scientometric analysis was performed to identify the patterns, trends and gaps of knowledge for this invasive species. A survey of the published literature was conducted using the database of the Thomson Institute for Scientific Information (ISI). A total of 107 papers were surveyed that were published between 1982 and 2012 in 60 journals. The number of papers on L. fortunei over the years has increased, especially within the last eight years of the study period. Argentina, Brazil, and Japan are the countries that contributed the most papers to the literature on invasive bivalve. The majority of papers were field-observational studies. Among some important gaps that need to be addressed are the relatively small number and/or lack of studies conducted in the native countries and in countries invaded by L. fortunei, the lack of internationally collaborative publications in these countries, as well as a low number of internationally collaborative studies.

scholarly journals RFLP pattern determination for the invasive bivalves Limnoperna fortunei (Dunker, 1857) and Corbicula fluminea (Muller, 1774)

2018 ◽  
Vol 13 (3) ◽  
pp. 1 ◽  
Author(s):  
Renato Brito de Oliveira Junior ◽  
Rayan Silva de Paula ◽  
Vinícius Sergio Rodrigues Diniz ◽  
Marcela David de Carvalho ◽  
Antônio Valadão Cardoso
Keyword(s):  
Invasive Species ◽  
Corbicula Fluminea ◽  
Hydroelectric Dams ◽  
Limnoperna Fortunei ◽  
Bivalve Larvae ◽  
Detection And Identification ◽  
Invasive Bivalves ◽  
Pcr Rflp ◽  
Pattern Determination ◽  
Golden Mussel

The golden mussel (Limnoperna fortunei) and Corbicula fluminea are considered well-established invasive species in the rivers of Brazil and South America. In addition to the environmental problems resulting from this invasion process, the economic issue, especially in hydroelectric dams, is very worrisome and has mobilized several types of studies on these invasive bivalves. The detection and identification of these organisms in their adult phase in the rivers is not a problem; however, the identification of bivalve larvae by usual morphological methods is difficult due to high similarity conserved in these stages. The use of PCR-RFLP has proven to be an efficient and agile molecular method that allowed the detection of different patterns in the agarose gel for the two bivalves tested. The gel pattern showed a 100 bp band for L. fortunei not detected for C. fluminea. Thus, it is possible to detect larvae of these species from water samples, which can be a powerful tool for environmental monitoring programs on aquatic invasive species.

scholarly journals Density and body size of the larval stages of the invasive golden mussel (Limnoperna fortunei) in two neotropical rivers

2012 ◽  
Vol 23 (3) ◽  
pp. 282-292 ◽  
Author(s):  
Vivianne Eilers ◽  
Márcia Divina de Oliveira ◽  
Kennedy Francis Roche
Keyword(s):  
Body Size ◽  
Larval Stage ◽  
Larval Density ◽  
Limnoperna Fortunei ◽  
Larval Size ◽  
Larval Stages ◽  
Positive Effects ◽  
Paraguay River ◽  
Body Sizes ◽  
Golden Mussel

AIM: The present study involved an analysis of the monthly variations in the population densities and body sizes of the different stages of planktonic larvae of the invasive golden mussel (Limnoperna fortunei), in the rivers Paraguay and Miranda; METHODS: The study was carried out between February 2004 and January 2005. Monthly collection of the plankton samples was accompanied by physical, chemical and biological analyses of the water; RESULTS: The Miranda River presented higher values of calcium, pH, alkalinity, conductivity and total phosphorous. Larval density varied from 0-24 individuals.L-1 in the Paraguay River, with a peak in March of 2004, while in the Miranda River, densities varied between 0-9 individuals.L-1 with a peak in February of 2004. No larvae were encountered during the coldest months, May and June. No significant correlations were found between environmental variables and larval density in either river. Only the valved larval stages were recorded. The "D" and veliger forms were most abundant; umbonate larvae were rare in the Miranda River samples. Mean body sizes of "D", veliger and umbonate larval stages were, respectively, 111, 135 and 152 µm, in the Paraguay River, and 112, 134 and 154 µm in the Miranda River. Principal Components Analysis indicated positive relationships between "D" larval stage size and the ratio between inorganic and organic suspended solids, while negative relationships were found between larval size and calcium and chlorophyll-<img border=0 width=7 height=8 src="/img/revistas/alb/2012nahead/ALB_AOP_230307car01.jpg">; CONCLUSIONS: The larvae were recorded in the plankton during most of the year, with the exception of the two colder months. Neither densities nor larval stage body sizes were significantly different between the two rivers. Possible positive effects of food and calcium concentrations on body size were not recorded. This species may be adapted to grow in environments with elevated sediment concentrations.

Titanium dioxide nanoparticles induce genotoxicity but not mutagenicity in golden mussel Limnoperna fortunei

2016 ◽  
Vol 170 ◽  
pp. 223-228 ◽  
Author(s):  
Francine Girardello ◽  
Camila Custódio Leite ◽  
Izabel Vianna Villela ◽  
Miriana da Silva Machado ◽  
André Luiz Mendes Juchem ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Titanium Dioxide Nanoparticles ◽  
Limnoperna Fortunei ◽  
Golden Mussel

scholarly journals Three invasive species occurring in the diets of fishes in a Neotropical floodplain

2014 ◽  
Vol 74 (3 suppl 1) ◽  
pp. s16-s22 ◽  
Author(s):  
A Isaac ◽  
A Fernandes ◽  
MJM Ganassin ◽  
NS Hahn
Keyword(s):  
Invasive Species ◽  
Hydrilla Verticillata ◽  
Corbicula Fluminea ◽  
Limnoperna Fortunei ◽  
River Floodplain ◽  
Upper Paraná River Floodplain ◽  
Neotropical Floodplain ◽  
Upper Paraná River ◽  
The Impact ◽  
Mollusk Species

The composition of the diets of 66 species of fishes was investigated from September 2009 to June 2010 in three subsystems of the Upper Paraná River floodplain (Brazil), following invasion by the two mollusk species Limnoperna fortunei (Dunker, 1857) and Corbicula fluminea (Müller, 1774), and the macrophyte Hydrilla verticillata (L.f.) Royle. Limnoperna fortunei was consumed in all three subsystems and occurred in the diet of 15 fish species, with a high proportion in the diet of Leporinus obtusidens. Corbicula flumineawas present in the diet of Pterodoras granulosus caught in the Paraná and Ivinheima subsystems. Hydrilla verticillataoccurred in the diet of Schizodon nasutus caught in the Ivinheima and Paraná subsystems. It is not yet possible to evaluate the potential of these species to control invasive mollusks in the study area or the impact of these species on the structure of the food chain. Omnivorous and herbivorous fishes in the study area may have little impact on the population of H. verticillata.

scholarly journals A sustainable synthetic biology approach for the control of the invasive golden mussel (Limnoperna fortunei)

2018 ◽  
Author(s):  
Mauro F Rebelo ◽  
Luana F Afonso ◽  
Juliana A Americo ◽  
Lucas da Silva ◽  
José L B Neto ◽  
...  
Keyword(s):  
Synthetic Biology ◽  
Control Method ◽  
Economic Feasibility ◽  
South American ◽  
Gene Drive ◽  
Limnoperna Fortunei ◽  
Invasive Mussel ◽  
Golden Mussel ◽  
And Control ◽  
Synthetic Biology Approach

The recent development of the CRISPR-Cas9-based gene drive has created the conditions to seriously consider this technology to solve one of the major environmental challenges in biodiversity conservation i.e. the control of invasive species. There is no efficient control method for golden mussel infestation available so far. Here we discuss the technical and economic feasibility of using a synthetic biology based approach to fight and control the invasive mussel Limnoperna fortunei in South American rivers and reservoirs.

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