Phoretic mites in uni- and bivoltine populations of Ips typographus: a 1-year case study

Abstract

Members of the order Mesostigmata frequently use other animals to colonize suitable habitats, and thus their phoretic exploitation of bark beetles is not exceptional. We compared the abundance and species spectrum of phoretic mites in univoltine and bivoltine populations of the European spruce bark beetle Ips typographus. Two localities with high population densities of Ips typographus in the eastern part of the Czech Republic (400 and 1100 m a.s.l.) were studied. Beetles were sampled with pheromone traps baited with IT Ecolure (5 per locality). In total, 1268 I. typographus individuals were captured, from which 1662 mite individuals were collected and 8 species of phoretic mites were identified. The most numerous species were Dendrolaelaps quadrisetus and Trichouropoda polytricha. Trichouropoda polytricha was dominant at the higher elevation (1100 m a.s.l.). Neither the number of phoretic mites per beetle nor the percentage of beetles carrying the mites differed between the localities. At the locality with bivoltine beetle populations, however, the number of phoretic mites per beetle was greater in the spring generation than in the summer generation.

REVIEW OF MITES (ACARI) ASSOCIATED WITH THE EUROPEAN SPRUCE BARK BEETLE, <i>IPS TYPOGRAPHUS</i> (COLEOPTERA: CURCULIONIDAE: SCOLYTINAE) IN ASIAN RUSSIA

“…This species is known from Austria, Germany, Poland, Croatia, Russia, Lebanon, Slovakia (Mašán 2001), Sweden , Czech Republic (Čejka and Holuša 2014), Bulgaria (Takov et al 2009) and Spain (Fernández et al 2013). Deutonymphs of this species are phoretic on various bark beetles: Ips typographus (Čejka and Holuša 2014;Feketeová 2011;Moser and Bogenschütz 1984;Takov et al 2009;Vrabec et al 2012), Ips sexdentatus (Fernández et al 2013), Hylastes cunicularius (Kršlak et al 2010), Pityocteines curvidens, P. spinidens, P. worontzowi (Pernek et al 2008(Pernek et al , 2012, and Pityogenes chalcographus (Khaustov et al 2016;Zach et al 2016).…”

“…Gwiazdowicz et al (2011Gwiazdowicz et al ( , 2015 studied mesostigmatic mites associated with I. typographus in Poland using Borregard pipe traps. Vrabec et al (2012) and Čejka and Holuša (2014) also studied mesostigmatic mites in Slovakia (collected manually) and the Czech Republic (collected with pheromone traps), respectively. Wirth et al (2016) compared mite communities associated with I. typographus and I. cembrae in Croatia (manual sampling in beetles' galleries).…”

Foretičtí roztoči lýkožrouta smrkového Ips duplicatus (Coleoptera: Curculionidae: Scolytinae) z oblasti recentní gradace ve střední Evropě / Phoretic mites (Mesostigmata) on double-spined spruce bark beetle Ips duplicatus (Coleoptera: Curculionidae: Scolytinae) in recent oubreak area in the central Europe

“…Mezi lokalitami se signifikantně lišilo procento brouků, které na svých tělech nesou alespoň jednoho foretického roztoče, stejně tak se liší v počtu foretických roztočů na jednoho brouka. Zjištěné hodnoty se ovšem nijak neliší od těch, které byly nalezeny na dalších lokalitách ve východní části České republiky u druhu I. typographus (Čejka & Holuša 2014).…”

“…Celkově je počet foretických roztočů na jednoho brouka i procento brouků, kteří nesou alespoň jednoho foretického roztoče a druhové spektrum i pozice roztočů na těle velice podobná jako u druhu I. typographus (Moser & Bogenschütz 1984;Feketeová 2011a;Čejka & Holuša 2014). Je to způsobeno tím, že se na studovaných lokalitách I. duplicatus vyskytuje na stejné hostitelské dřevině, jako se běžně vyskytuje I. typographus, bionomie obou druhů je velice podobná a proto je sdílení stejného druhového spektra roztočů zřejmé.…”

Alpha diversity of mesostigmatid mites associated with the bark beetle Ips typographus (L.) in Poland

“…Mesostigmatid mites attach to the body of the host (an insect or myriapod) and they are often carried long distances from one microhabitat to another (Schwarz & Müller, ; Gwiazdowicz, ; Błoszyk et al ., , ; Gwiazdowicz et al ., ). This phenomenon has been also observed on the spruce beetle I. typographus (L.) , which can be a carrier for mesostigmatid mites (Gwiazdowicz et al ., , ; Čejka & Holuša, ).…”