Time filter

Source Type

Stoch F.,University of L'Aquila | Gerecke R.,Biesingerstr. 11 | Pieri V.,University of Udine | Rossetti G.,University of Parma | Sambugar B.,Museo Civico di Storia Naturale
Journal of Limnology | Year: 2011

The distribution patterns of Alpine crenic meiofauna were studied using a standardised sampling procedure at 110 springs, evenly distributed across both carbonate and siliceous rocks in Trentino (northern Italy). Spring altitude ranges between 170 and 2800 m a.s.l. One hundred and thirty-eight taxa (mainly identified at species level), belonging to the Annelida (39), freshwater Acari (57), Copepoda (24), and Ostracoda (18) were found in springs of the investigated area. Using Canonical Correspondence Analysis, spatial patterns of meiofaunal assemblages at the regional scale were best explained by altitude, water chemistry (mainly related to geology) and water-flow regime; the role of microhabitat structure and anthropogenic disturbance as environmental descriptors was of minor importance.


Pesic V.,University of Montenegro | Cook D.,7725 N. Foothill Drive S. | Gerecke R.,Biesingerstr. 11 | Smit H.,Naturalis Biodiversity Center
Zootaxa | Year: 2013

A rearrangement of genera and subgenera in the water mite family Mideopsidae is proposed, resulting in the following changes: Mideopsellinae Lundblad, 1937 and Phreatomideopsinae Schwoerbel, 1986 are synonymized with Mideopsidae Koenike, 1910; Djeboa K. Viets, 1911, Mideopsides Lundblad, 1943, Neoxystonotus Lundblad, 1927, Octomideopsis K. Viets, 1931 and Xystonotus Wolcott, 1900 are redefined and proposed as distinct genera. A global key for the genera of the family is given. New records of water mites of the genus Djeboa K. Viets, 1911, Xystonotus Wolcott, 1900 and MideopsellidesK.O.Viets, 1962 (Acari: Hydrachnidia, Mideopsidae) from the Afrotropical region are presented. Twenty species new to science are described, i.e., Djeboa amendano (Madagascar), D. amethystica (Madagascar), D. angulipalpis (Madagascar), D. coelestinica (Madagascar), D. crocodilorum (South Africa), D. curtipalpis (Ghana), Djeboa depressa(Côte d'Ivoire), D. dinosaurophila (South Africa), D. elephantina (Côte d'Ivoire), D. ghanaensis (Ghana), D. gledhilli (Côte d'Ivoire, Ghana), D. globulipalpis (South Africa, Ghana), D. granatica (Madagascar), D. mandena (Madagascar), D. maromandia (Madagascar), D. nzia (Côte d'Ivoire), D. turmalinica (Madagascar), D. vanilla (Madagascar), D. wondergemi (Ghana) and Xystonotus madagascariensis (Madagascar); a first description of the male is given for Djeboa bimaculata (Cook, 1966). A key for all species of the Djeboa is presented. © 2013 Magnolia Press. All rights reserved.


Pesic V.,University of Montenegro | Smit H.,Netherlands Center for Biodiversity Naturalis | Gerecke R.,Biesingerstr. 11
Zootaxa | Year: 2011

New records of water mites of the genus Atractides Koch, 1837 (Acari: Hydrachnidia, Hygrobatidae) from South Africa are presented. Five species new to science, Atractides cooki, A. dracomontanus, A. meridianus, A. capensis and A. neoscutifer are described; a first description of the male is given for A. pulcher K. Viets, 1956 and A. assimilis K.O. Viets, 1964. A key to the species of Atractides from South Africa is presented. Copyright © 2011 Magnolia Press.


Pesic V.,University of Montenegro | Gerecke R.,Biesingerstr. 11
Zootaxa | Year: 2014

Four species of water mites (Acari, Hydrachnidia) were collected in 2010 during an Italian speleological expedition to caves of the Ha Giang region in northern Vietnam from rimstone pools or other tiny accumulations of percolating water. Four taxa new to science are described, representing the families Torrenticolidae (Torrenticola anophthalma nov. sp., Sty-gotorrenticola coniseta nov. gen., nov. sp.), Limnesiidae (Raptorhydracarinae subfam. nov., Raptorhydracarus tomasini nov. gen., nov sp.) and Athienemanniidae (Africasia vietnamitica sp. nov.). Most of these taxa show striking morphological adaptations to subterranean life. Copyright © 2014 Magnolia Press.


Pesic V.,University of Montenegro | Smit H.,University of Amsterdam | Gerecke R.,Biesingerstr. 11 | Di Sabatino A.,University of L'Aquila
Zootaxa | Year: 2010

Based on published records and original data from recent research, a list is presented of the water mite (Acari: Hydrachnidia) fauna of the Balkan countries, i.e. Croatia, Bosnia and Hercegovina, Montenegro, Albania, Serbia, Macedonia, Bulgaria and Greece. It includes 382 species and subspecies in 77 genera and 34 families. Numerous new records for national faunas are reported, and five taxa, Sperchon pelopeius (Greece), Atractides stankovici (Croatia), Axonopsis graeca (Greece), Woolastookia minuta (Bosnia and Hercegovina, Greece) and Arrenurus ornatus graecus (Greece) are described as new to science. Atractides moniezi (Motas, 1927) is synonymized with A. lacustris (Lundblad, 1925). The assumption of K. O. Viets (1987) that Pionopsis subruber Dordevic, 1903 is a synonym of P. lutescens (Hermann, 1804) is confirmed. The characteristics of the water mite fauna in the treated area are briefly outlined. Additional field work is highly desirable for a more appropriate evaluation of the extant water mite biodiversity in the Balkans. Copyright © 2010.


Pesic V.,University of Montenegro | Smit H.,Netherlands Center for Biodiversity Naturalis | Gerecke R.,Biesingerstr. 11
Zootaxa | Year: 2012

A list is given of the water mite material of the genus Atractides Koch, 1837 (Acari: Hydrachnidia, Hygrobatidae) deposited in the Muséum national d'Histoire naturelle in Paris. Atractides allgaier Gerecke, 2003 and A. remotus Szalay, 1948 are recorded for the first time for France. From running waters in central-southern France, Atractides marsus n. sp. and A. angelieri n. sp. are described. Copyright © 2012 · Magnolia Press.


Gerecke R.,Biesingerstr. 11 | Cantonati M.,Museo Tridentino di Science Naturali | Spitale D.,Museo Tridentino di Science Naturali | Stur E.,Norwegian University of Science and Technology | Wiedenbrug S.,Zoologische Staatssammlung
Journal of Limnology | Year: 2011

After extensive exploratory investigations into crenic habitats at the beginning of the 1990s, a number of springs were selected and long-term ecological research programmes independently initiated in the Berchtesgaden National Park (north-eastern Alps, Bavaria) and the Adamello-Brenta Nature Park (south-eastern Alps, Trentino). Following more than a decade of standardized work, this paper presents a selection of results from both sides of the Alps, with a focus on zoobenthos in Bavaria and on pro- and eukaryotic algae in Trentino. In order to test the assumption that permanent springs are particularly suitable habitats for long-term ecological research, the following topics are addressed: (1) taxonomic diversity and relationships between diversity and spring typology; (2) transverse gradients in crenic habitats, hygrophilous terrestrial invertebrates and xerotolerant algae; (3) possibilities of documenting changes in species composition over decadal time scales ("medium-term") based on emergence traps, benthos, and benthic algae. The data obtained show that: (1) crenic habitats support particularly high biological diversity (but a thorough documentation of insect diversity is impossible without emergence studies); (2) helocrenes are the most species-rich habitats, for both invertebrates and diatoms; (3) dynamic (unstable) and occasionally-impacted springs show identifiable signs of medium-term change, whilst particularly complex and stable crenic habitats seem to be controlled by internal processes. Our results suggest that: (1) the meiofauna is likely to react directly to environmental change, while emergers and the hygrophilous terrestrial fauna are indirectly affected, and (2) diatoms react both to direct effects of environmental change, e.g. discharge and hydrochemistry, and to indirect effects on the surroundings of the spring. Based on our results, long-term research strategies are discussed. For long-term studies, we propose a focus on meiofauna and diatoms, with target-oriented emergence studies and macroscopic benthic algal analyses. This could form the basis for an integrated and uniform approach to studies of these habitats worldwide.


The morphological variability of Pseudofeltria scourfieldi Soar, 1904, a water mite species known from scattered sites in Central and Northern Europe, is documented on the base of populations from the Bavarian Alps and bibliographic data; its diagnostic characters are discussed in comparison with P. quadriscutata Biesiadka, 1971 from Western Beskides (Poland) and P. aemiliana n. sp. from mountain springs in the Region of Emilia Romagna (Italy). Pseudofeltria vanrensburgi Bader, 1974 (Switzerland) is a junior synonym of Forelia variegator (Koch, 1837). A new diagnosis of the subfamily Foreliinae is given and discussed, including species of the genera Pionacercopsis (former subgenus of Pionacercus, here elevated to the genus rank) and Pionacercus. © Gerecke R. Acarologia is under free license.


Selected water mite species of the family Aturidae are revised. The following synonyms are established: Aturus intermedius serrata K. Viets, 1922 = A. asserculatus Walter, 1906; A. lelgioensis Rensburg, 1971 = A. natangensis Protz, 1900; A. oudemansi Besseling, 1932 = A. intermedius Protz, 1900. The proposal of E. Angelier (1965), to synonymize A. paucisetus Motaş & Tanasachi, 1946 with A. brachypus K. Viets, 1934 is rejected. Aturus elongatus Walter, 1927 (described after females, type material heavily damaged) and Ljania bipapillata subterranea Schwoerbel, 1964 (no type material available, no type locality defined) are considered as species incertae. Ljania macilenta longissima Schwoerbel, 1962 is redescribed and elevated to species rank. Two species of the genus Kongsbergia are described as new to science from interstitial habitats in the Central Mediterranean: K. albanorum sp. nov. from Western Sicily and K. jaentschi sp. nov. from Sicily and Sardinia. Woolastookia basilicalabrica sp. nov. is described from mountain streams in Southern Italy. Numerous new records are given, extending noteworthy the known distribution area of several species in Southern Europe. Aturus rotundus Romijn, 1921, Kongsbergia dentata Walter, 1947 and K. simillima K. Viets, 1949 are recorded for the first time from Italy, K. pectinigera Motaş & Tanasachi, 1946 from France and Italy; first records from Corsica are given for Aturus intermedius and A. spatulifer Piersig, 1904. Lectotypes are designated for Aturus asserculatus Walter, 1906; A. asserculatus serratus K. Viets, 1922; A. oudemansi Besseling, 1932. Copyright © 2014 Magnolia Press.


Smit H.,University of Amsterdam | Gerecke R.,Biesingerstr. 11
Acarologia | Year: 2010

A review is given of all species reported from France. In total, 420 species and seven subspecies have been found in France. The following synonyms are established: Atractides vandeli Angelier, Decamps & Rey as a synonym of A. phreaticus Motaş & Tanasachi, Atractides fonticolus gallicus Angelier, Decamps & Rey as a synonym of A. spinipes Koch and Barbaxonella pilosa Angelier, Decamps & Rey as a synonym of B. angulata (K. Viets). The following species are reported for the first time: Atractides orghidani Motaş & Tanasachi, Hydrachna goldfeldi Thor, Hydrodroma pilosa Besseling, Limnesia curvipalpis Tuzovskij, Limnesia undulatoides Davids, Piona ambigua (Piersig), Forelia curvipalpis K. Viets, Mideopsis roztoczensis Biesiadka & Kowalik, Arrenurus octagonus Halbert and Arrenurus tubulator (Müller). Moreover, Arrenurus affinis Koenike is reported for the first time with certainty. For each species, all references are given which contain geographical information about their occurrence in France. Numerous new records are given, especially of species from standing waters. © 2009-2011 ACAROLOGIA.

Loading Biesingerstr. 11 collaborators
Loading Biesingerstr. 11 collaborators