Effects of temperature, pH and salinity on the infection of Leptolegnia chapmanii Seymour (Peronosporomycetes) in mosquito larvae

Pelizza, Sebastián Alberto; Lastra, Cláudia C. López; Becnel, James J.; Bisaro, Vilma; García, Juan José

doi:10.1016/j.jip.2007.04.005

Cited by 32 publications

(34 citation statements)

References 13 publications

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“…Regragui and Lahlou [30] showed that the stimulator effect of salinity was observed on the mycelial growth, conidia production, and conidia germination of the tested stain of V. dahliae , respectively, in concentrations 170, 120, and 256 mM of NaCl. Oppositely, Pelizza et al [31] showed that the presence of NaCl in the medium culture reduces the growth of an isolate of Leptolegnia chapmanii . However, Reid et al [32] reported that sodium chloride was more effective than other chloride salts (calcium chloride, ammonium chloride, and manganese chloride) in controlling Fusarium crown and root rot caused by F. oxysporum f. sp.…”

Section: Discussionmentioning

confidence: 99%

Effects of Two Salts Compounds on Mycelial Growth, Sporulation, and Spore Germination of Six Isolates ofBotrytis cinereain the Western North of Algeria

Boumaaza

Benkhelifa

Moulay

2015

International Journal of Microbiology

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Six isolates of Botrytis cinerea were isolated from leaves and stems of different tomato varieties taken from four areas in the northwest of Algeria where tomato is mostly grown in greenhouses and high tunnels. The purpose of this research was to determine the effect of two salts, NaCl and CaCl2, on three stages of Botrytis cinerea's life cycle. All isolates tested were stimulated in 50 to 150 ppm; NaCl was the most effective treatment to increase mycelial growth at two tested concentrations. However, at 300 ppm concentration, CaCl2 completely inhibited the growth of mycelium; they reach 34.78% for the isolate TR46 and 26.72% for isolate F27. The sodium and calcium salts stimulated conidia production in liquid culture. We noticed that the effect of calcium chloride on sporulation was average while sodium chloride. In the medium containing 50 ppm, calcium chloride and sodium chloride increased the germination capacity of most isolates compared with the control. Other calcium salts, at 100 or 300 ppm, decreased the germination percentage of the conidia. With the exception of sodium salts, the inhibitions of germination reduce at 150 or 300 compared with the control. Conidial germination was slightly inhibited by sodium chloride only when the concentration was over 300 ppm.

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Section: Discussionmentioning

confidence: 99%

Effects of Two Salts Compounds on Mycelial Growth, Sporulation, and Spore Germination of Six Isolates ofBotrytis cinereain the Western North of Algeria

Boumaaza

Benkhelifa

Moulay

2015

International Journal of Microbiology

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“…Laboratory assays with the fungus Leptolegnia chapmanii found 85% of susceptibility for 4th instar and 100% for 1st -3rd larvae (López Lastra et al 2004). Posterior studies determined that this fungus was infectious within a wide range of temperature (10-35°C), pH levels (4-10) and NaCl concentrations (0-7 ppt) that could be found in natural habitats (Pelizza et al 2007). …”

Section: Aedes Spp In Argentina: State Of Artmentioning

confidence: 99%

Aedes aegypti, Aedes albopictus, and dengue in Argentina: current knowledge and future directions

Vezzani

Carbajo

2008

Mem. Inst. Oswaldo Cruz

138

101

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“…Abakpa tends to be more populated than other locations and Eguniobi (1996) observed that the number of people living in an area is directly proportional to the waste they generate and this sequentially creates breeding habitat for mosquitoes. Pelizza et al (2007) stated that pH of 7 is neutral and water with a pH of 6.8-7.2 is preferable for breeding mosquito of any species and the pH reading observed in this study was in that range (6.03-6.89). The result of the pH has no correlation (r=-0.695) with abundance of the larvae.…”

Section: Discussionmentioning

confidence: 46%

Mosquito Species Associated with Refuse Dumps within Enugu Municipal, Enugu State, Nigeria

Ebuka¹,

Chukwudi²,

Uka³

et al. 2017

jmr

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A survey of refuse dumps in Enugu municipal for the presence of mosquito larvae and eggs from March to August, 2015 were studied. Twenty refuse sites from the five zones according to ESWAMA classifications were sampled to elucidate the mosquito ecology and their breeding habitats. Ovitrapping and larval sampling were used to collect the eggs and larvae from the different study sites. Water samples collected from the breeding sites during the larval collection were analysed for physico-chemical parameters and their correlation with larval abundance. Result indicated a total of 1,140 mosquito eggs were collected from Ovitrapping and 820 of the eggs were positive. Of the collections, 168 eggs were collected from New Haven, 199 eggs from G.R.A, 186 eggs from Abakpa, 163 eggs from Emene and 104 eggs from Independence layout. Culex quinquefasciatus accounted for 33.3% of the total eggs collected. The eggs of Cx.quinquefasciatus, Ae.albopictus and Ae.aegypti were the most abundant (p<0.05). Using larval sampling, 362 mosquito larvae comprising of seven species {Cx quinquefasciatus (36.7%), Ae. albopictus (28.2%), Ae.aegypti (21.3%), Ae.africanus (5.2%), Cx .tigripes (4.1%) and An.gambiae (0.8%)} were collected. Bulk of the collections was made in G.R.A (25.7%) while least collection was in Independence layout. The physico-chemical parameters sought after was Temp, pH, Dissolved oxygen, Copper (Cu), Lead (Pb), Zinc (Zn) and Iron (Fe) from the water collected from the breeding sites. Although there was no significance difference (P>0.05) between the physico-chemical parameters and mosquito larval abundance, temperature and Lead (Pb) showed strong positive (r=0.5, 0.6440) correlation respectively while Copper (Cu) showed a strong negative (r= -860) correlation. To avert disease outbreaks caused by vectors breeding in dump sites or around the sites in Enugu municipal, more dumpsters with coverlid should be provided to prohibit waste been disposed indiscriminately.

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Effects of temperature, pH and salinity on the infection of Leptolegnia chapmanii Seymour (Peronosporomycetes) in mosquito larvae

Cited by 32 publications

References 13 publications

Effects of Two Salts Compounds on Mycelial Growth, Sporulation, and Spore Germination of Six Isolates ofBotrytis cinereain the Western North of Algeria

Effects of Two Salts Compounds on Mycelial Growth, Sporulation, and Spore Germination of Six Isolates ofBotrytis cinereain the Western North of Algeria

Aedes aegypti, Aedes albopictus, and dengue in Argentina: current knowledge and future directions

Mosquito Species Associated with Refuse Dumps within Enugu Municipal, Enugu State, Nigeria

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