Bacterial microbiota on digestive structure of Cybister lateralimarginalis torquatus (Fischer von Waldheim, 1829) (Dytis
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ORIGINAL PAPER
Bacterial microbiota on digestive structure of Cybister lateralimarginalis torquatus (Fischer von Waldheim, 1829) (Dytiscidae: Coleoptera) Mehmet Bektaş1 · Figen Orhan2 · Ömer Köksal Erman3 · Özlem Barış3 Received: 9 May 2020 / Revised: 25 August 2020 / Accepted: 15 September 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract In the List of World Edible Insects, Cybister sp. (Dytiscidae) genus of species is known to be consumed by humans. Dried Cybister lateralimarginalis torquatus (Fischer von Waldheim, 1829) which has been collected in Turkey long before and compared to other edible insects having large body, belonging to the Dytiscidae family from the aquatic beetle fauna was aimed to determine microbiota (in digestive structure) of the insect species. In this study, Lelliottia amnigena (Enterobacter amnigenus) (male insect) and Citrobacter freundii (female insect) bacteria species were detected from insect digestion structures. Finally, the DNA sequences of the obtained bacteria were matched from the Gene Bank with the accessory numbers. Moreover, levels of some heavy elements (Al, Cr, Fe, Co, Ni, Cu, Zn, As, Se, Cd, Hg, Pb) were evaluated in this study to observe whether Dytiscidae (Coleoptera) is a useful candidate for biomonitoring studies. The result of the study analyzes agricultural, ecological and health research, influence on the microbial flora and the effect of environment would be and how big the problem we would face in our future. Calculated analysis of the results will give a positive impetus and the fighting method to destroy it in the source. Keywords Aquatic insects · Dytiscidae · Cybister · Heavy metals · DNA sequences · Microbiota
Introduction Dated from ancient times, insects have been picked out as one of the alternative protein source to overcome the periodic or seasonal famine of other sources (Young-Area et al. 1997). Insects have not only an extremely important role in ecology (Price 1975), but also have always participated in the nutrition of human beings (Chauvin 1968; Sutton 1988). Insect microbiota help in the food digestion, to produce useful enzymes, synthesize vitamins, bind nitrogen, produce pheromones and compete with insect pathogens (Stull et al. Communicated by Erko stackebrandt. * Mehmet Bektaş [email protected] 1
Hınıs Vocational Training High School, Ataturk University, Erzurum, Turkey
2
Health Services Vocational Training School Erzurum, Ataturk University, Erzurum, Turkey
3
Biology Department, Science Faculty, Ataturk University, Erzurum, Turkey
2018). Additionally, symbionts that inhabit within animal guts can provide their hosts with resistance to bacterial pathogens via a process called colonization resistance (Buffie and Pamer 2013). In an ultimate study, we found that parents transmit their gut microbiome to their larvae by direct feeding (Wang and Rozen 2017). Ordinarily, insect ingestion is a tradition inherited from the ancestors (Ramos-Elorduy 2010); it is known that insects are very rich in terms o
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