Bacterial load of cockroaches in relation to urban environment

Rivault, Colette; Cloarec, Ann; Guyader, Annie Le

doi:10.1017/s0950268800068254

Cited by 51 publications

(39 citation statements)

References 6 publications

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“…Various studies have revealed that cockroaches aggregate in corners in kitchens, especially around the refrigerators and in the bathrooms around chests, around plumbing connections within or between rooms and/or flats [1,14,15]. As cockroaches are engaged in their nocturnal forages, they drop off shed skins, nymphal shed skins and fecal pellets.…”

Section: Introductionmentioning

confidence: 99%

Microbiological studies of cockroaches from three localities in Gaborone, Botswana

Mpuchane¹,

Matsheka²,

Gashe³

et al. 2011

African Journal of Food, Agriculture, Nutrition and Development

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Cockroaches have become the most common pests in a majority of households in Gaborone, the capital city of Botswana Their presence has always raised safety concerns, especially as carriers of food-borne pathogens and food-spoilage organisms. To address the safety issues, bacteriological investigations were carried out on cockroaches trapped from the kitchens and toilets of three localities in Gaborone, households in Botswana. The bacterial, total spore forming, Bacillus cereus, coliforms and E. coli counts from the surfaces of cockroaches were estimated using bacteriological media. Aerobic and facultatively anaerobic bacteria from the fecal pellets were isolated and characterized. Specialized media were used for culturing pathogens. 67 %, 22.2 % and 28.6 % of the cockroaches trapped in the kitchen from Central/Broadhurst, Old Naledi and Tlokweng, respectively, had aerobic plate counts of > 10 6 CFU/cockroach. The cockroaches trapped from the toilets had higher counts than kitchens. Sporeformers were present in most samples though in lower numbers. However, Bacillus cereus was only found in some of the cockroaches at much lower numbers. As much as 70-98.3% of the cockroaches had coliforms; but, E. coli was only found in 5-6.5% of the cockroaches at > 10 3 CFU/cockroach. 70 species of bacteria representing 37 genera were isolated from the surface and fecal pellets. Even though the majority of the bacteria that were isolated from the surfaces were Gram negative those from the pellets were mostly Gram positive. The most common and abundant species belonged to Pseudomonas and Serratia, with members of the Enterobacteriaceae following. In the pellets, species of Bacillus were predominant, but, there were some members of Enterobacteriaceae. Pathogens like Salmonella, Shigella and B. cereus were isolated. Opportunistic pathogens like species of Pseudomonas, Klebsiella and Vibrio and food spoilage bacteria such as species of Enterobacter, Citrobacter, Escherichia, Erwinia, and Pseudomonas were also found. Proper care in disposal of food remnants and overall cleanliness at the households prevents cockroaches from foraging in the kitchen and toilet. Une attention particulière devra être prêtée à la disposition des restes alimentaires ainsi qu'à la propreté générale des ménages afin de prévenir la fouille des cancrelats dans les cuisines et toilettes.

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Section: Introductionmentioning

confidence: 99%

Microbiological studies of cockroaches from three localities in Gaborone, Botswana

Mpuchane¹,

Matsheka²,

Gashe³

et al. 2011

African Journal of Food, Agriculture, Nutrition and Development

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“…was least frequent (10.0%) ( Table 4). These Gram-negative bacilli have been most frequently isolated from cockroaches in several other studies (Fotedar et al 1991, Cloarec et al 1992Rivault et al 1993). Lin et al (2008) reported isolation of E. coli, Pseudomonas sp., Salmonella sp.…”

Section: Resultsmentioning

confidence: 90%

Occurrence of Gram-negative bacteria in cockroaches obtained from different areas of Dhaka city

Akter

Ahmed

Hasanuzzaman

2017

Bangladesh J. Zool.

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Abstract:The presence of Gram-negative bacteria in cuticle and alimentary tract of cockroaches collected from four selected areas of Dhaka city was investigated. Using detection key, a total of 12 cockroaches were identified as Periplaneta americana (58.33%), Blattella germanica (33.33%) and Blatta orientalis (8.33%). From these three species 54 different bacterial isolates were obtained. Out of them, 33 were obtained from P. americana (14 from external and 19 from gut), 9 from B. orientalis (5 from external and 4 from gut) and 12 from B. germanica (5 from external and 7 from gut). Bacterial isolates obtained from external surface of the cockroaches belonged to four different Gram negative bacterial species (Klebsiella spp., Pseudomonas spp., Enterobacter spp. and E. coli), six bacteria have been obtained from alimentary tract (Klebsiella spp, Pseudomonas spp., Enterobacter spp., Escherichia coli, Salmonella spp. and Shigella spp.). Pseudomonas spp. were the most predominant bacteria isolated from external surface (33.34%) while Klebsiella spp. were found to dominate in alimentary tract (23.33%). P. americana carried the highest number (33) of bacterial isolates and B. orientalis carried the minimum (9). This study shows that cockroaches carry several bacteria on their external body surface and alimentary tract and can play a role in bacterial transmission to humans. Therefore, the existence of cockroaches in human dwellings is a serious public health problem.

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“…For example, cockroaches, four of which are listed as alien in the DAISIE database, can carry microbes on their body surface and infest human and animal food. Th ey can also provoke allergic reactions, including asthma (Brenner et al 1987, Rivault et al 1993.…”

Section: Arthropods Aff Ecting Human and Animal Healthmentioning

confidence: 99%

Impact of alien terrestrial arthropods in Europe. Chapter 5

Kenis¹,

Branco²

2010

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Bacterial load of cockroaches in relation to urban environment

Cited by 51 publications

References 6 publications

Microbiological studies of cockroaches from three localities in Gaborone, Botswana

Microbiological studies of cockroaches from three localities in Gaborone, Botswana

Occurrence of Gram-negative bacteria in cockroaches obtained from different areas of Dhaka city

Impact of alien terrestrial arthropods in Europe. Chapter 5

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