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First records of six Hypsibiidae species (Tardigrada, Eutardigrada) in Slovakia
... Tak bol z čeľade Longidoridae v pôde bukového lesa Malých Karpát opísaný vo svete nový druh Longidorus carpathicus (LIŠKOVÁ et al., 1997). V bukových, alebo zmiešaných lesoch sa u nás vyskytujú aj ďalšie druhy tejto čeľade: Longidorus cylindricaudatus, L. nevesi, L. piceicola, L. silvae a L. uroshis, Xiphinema dentatum a X. vuittenezi (LIŠKOVÁ a BROWN, 1999, 2003. Z čeľade Trichodoridae (tiež sú vektormi rastlinných vírusov) sú to druhy Trichodorus sparsus a Paratrichodorus macrostylus (LIŠKOVÁ a STURHAN, 1999) a z čeľade Criconematidae (koreňové ektoparazitické nematódy) druhy Mesocriconema curvatum, Criconemoides annulatus, Criconema annuliferum, C. princeps, Ogma cobbi a Xenocriconemella macrodora (LIŠKOVÁ et al., 2004). ...
... Dosvedčuje to aj štúdia GUOTHA a ŽUFFOVEJ (1989). Z bukových lesov rôznych typov na území Slovenska boli dosiaľ publikované nálezy týchto druhov pomaliek: Bryodelphax parvulus, Echiniscus granulatus, Pseudechiniscus suillus, Testechiniscus spitsbergensis, Milnesium tardigradum, Calohypsibius schusteri, Eremobiotus alicatai, Hypsibius convergens, H. dujardini, H. microps, H. montanus (GUOTH a ŽUFFOVÁ, 1989;DEGMA, 2003DEGMA, , 2006DEGMA a PEČALKOVÁ, 2003;DEGMA et al., 2004). Ide väčšinou o bežné druhy, ale nájdeme medzi nimi aj také, ktoré boli doteraz na Slovensku zistené iba jediný raz (napr. ...
The ecology and importance of another groups of soil invertebrates (e.g. Mollusca, Nematoda, Araneae, Isopoda, Chilopoda, Blattaria ...etc.) in the beech forest ecosystems is presented.
... Only a few studies have looked for an association between tardigrades and their hosts but the results have been mixed. Bertolani's [85] study found that hosts were not important, whilst other studies have reported that particular tardigrades were linked to specific hosts [86][87][88]. Drawing conclusions from these studies is difficult because of the great variability in occupancy from sample to sample: often it is not clear from low sampling effort whether these animals show real preferences between hosts or just stochastic differences in sampled occupancy. ...
Little is known about distribution patterns of micrometazoan organisms at different spatial scales and the mechanisms driving these patterns across different environments. Here we explore the fine-scale structure of tardigrades in a high-elevation Polylepis forest in northern Ecuador. To investigate spatial patterns of tardigrade abundance, we collected samples from different bryophyte taxa (hosts) on the woodland floor. We identified some tardigrades to species, but most taxa were considered at the level of morphological operational taxonomic units. Tardigrade assemblages differed in composition between host taxa, with some tardigrade taxa associated more with certain hosts, which might relate to host architecture or chemistry. Tardigrade occupancy, richness and abundance varied considerably between samples, and we estimate that more than 50 samples are required to estimate tardigrade taxon richness in this forest habitat. Physical distance between samples was not related to similarity of composition, and it seems that fine-scale differences in environmental conditions (including the distribution of host bryophytes) is much more important in determining tardigrade composition. We conclude that standardised, comprehensive sampling of terrestrial tardigrades at fine scales is necessary before making broader comparisons at coarser geographical scales. Such sampling should account for the diversity of potential hosts, with sufficient replication to capture tardigrade diversity.
... Isohypsibius jakieli Dastych, 1984 Remark: Both specimens correspond with the description of A. bartosi in RAMAZZOTTI & MAUCCI (1983) when we take into account the missing bars on the 2 nd and 3 rd legs as a discriminatory character from A. trinacriae (Arcidiacono, 1962) (BINDA, 1974). The last one named has already been reported from Slovakia, when the same criteria have been used (DEGMA, 2003). ...
... From moss fauna, only tardigrades and active gymnamoebae (Mrva, 2005) were studied within this project. Only one study (Guoth, 1986) and several published records including the description of Echiniscus pajstunensis Bartoš, 1941 have referred to Tardigrada of this region (Bartoš, 1937a(Bartoš, ,b, 1941Degma, 2003;Degma et al., 2004Degma et al., , 2005. ...
The structure of tardigrade communities in mosses of Central European oak-hornbeam forests was studied at 10 sites located in the Malé Karpaty Mts and Trnavská pahorkatina hills (SW Slovakia). A total of 3, 050 tardigrade specimens of 21 species and 2 families were gathered from 79 quantitative samples taken from 2000 and 2002. Kruskal-Wallis' tests and regression analyses showed no statistically significant influence between the 12 studied environmental variables and the number of Tardigrada specimens or number of species in the samples. A chi-square goodness of fit test suggested that the number of Tardigrada species in samples of moss Hypnum cupressiforme was random within the investigated area. A t-test of tardigrade species diversity resulted in significant differences between study sites. The group of communities with the lowest diversity does not differ mutually. Majority of differences in species diversity were caused by randomly found species. Results of cluster analysis as well as CCA point out that distribution of tardigrades and their colonisation of particular substrata is a random process. Although the results are affected by restricted number of samples, we believe that Tardigrada as passively dispersed organisms are without significant relationship to ecological variables related to their distribution amongst substrata.
... Ninety Tardigrada species and subspecies have been reported in Slovakia so far (DEGMA, 2003). ...
Ninety Tardigrada species and subspecies have been reported in Slovakia so far (DEGMA, 2003). During sampling of tardigrades in freshwater habitats of SW and C Slovakia, the two species listed below have been found in Slovakian territory for the first time. Grid reference numbers of the Data-bank of Slovak fauna (=DSF) and geographic coor-dinates of sampling sites were taken based on the DSF's map (LUČIVJANSKÁ, 1984). All specimens were identified using keys and descriptions in BERTOLANI (1982, 2003), RAMAZZOTTI & MAUCCI (1983) (also in BEASLEY, 1995), BISEROV, (1998), BERTOLANI et al. (1999) and BINDA & PILATO (1999). The whole ma-terial was prepared and identified by the author. The specimens were mounted in Hoyer's medium and de-posited in the author's collection. The current number of Tardigrada species and subspecies reported in Slo-vakia is 92. Macrobiotidae Thulin, 1928 Dactylobiotus selenicus Bertolani, 1981 Material examined: SW Slovakia, Podunajská rov-ina plain, Bratislava, Štrkovecké jazero lake (7868b) (=DSF), 48 • 10 N, 17 • 09 E, 26.X.1999, 1 specimen in a sediment from the 5.2 m depth, leg. E. Tirjaková; SW Slovakia, Podunajská rovina plain, Gabčíkovo, Danube river (8171a), 47 • 54 N, 17 • 35 E, 20.IV.2004, 1 speci-men in detritus, leg. speci-men in the sediment on the river bottom, leg. E. Tir-jaková; SW Slovakia, Podunajská rovina plain, Brati-slava, Danube river, Karloveské rameno river branch (7868a), 48 • 09 N, 17 • 03 E, 20.IX.1999, 13 specimens (one in simplex stage) in the sediment on the river bottom, leg. M. Mrva; the same place, 30.IX.1999, 8 specimens in a sediment, leg. P. Degma; SW Slovakia, Podunajská rovina plain, Bratislava-Rača, Račiansky potok brook (7768d), 48 • 12 N, 17 • 09 E, 9.X.2003, 28 specimens (two in simplex stage) in detritus on a lateral channel bottom, leg. P. Vďačný. evidently refers to Macrobiotus ruffoi Maucci, 1973 which is synonym to M. islandicus Richters, 1904 ac-cording to RAMMAZZOTTI & MAUCCI (1983).
... Reference list from which data were compiled Abe and Ito, 1994Dastych and Harris, 1994Pilato and Binda, 1998bAbe et al., 1998Dastych and Harris, 1995Abe et al., 2000Dastych and Kristensen, 1995Pilato and Binda, 2003Abe and Takeda, 2000aDastych and McInnes, 1995Pilato et al., 1998Abe and Takeda, 2000bDastych and McInnes, 1996Beasley, 1998Degma, 2003Pilato et al., 2001Bertolani et al., 1994aDegma and Pecalkova, 2003Pilato et al., 2002aBertolani et al., 1994bDudichev and Biserov, 2000Pilato et al., 2002b Dudichev et al., 1998Pilato et al., 2003aGuidetti, 1998Pilato et al., 2003bBinda et al., 2001Guidi and Grabowski, 1996Pilato et al., 2003cBinda and Pilato, 1995aIharos and Vargha, 1995Binda and Pilato, 1995bIto, 1995Pilato and Lisi, 2003Binda and Pilato, 1995cIto, 1997Pilato and Lisi, 2004Binda and Pilato, 1995d Kaczmarek et al., Pilato and Patanè , 1997Rho et al., 1997 Kaczmarek and Michalczyk, 2003Schuster, 2000Binda and Pilato, 1999a Kaczmarek and Michalczyk, 2004aSemeria, 1994Binda and Pilato, 1999b Kaczmarek and Michalczyk, 2004bSemeria, 2003Binda and Pilato, 2000 Kendall-Fite and Strayer et al., 1994Biserov, 1994Maucci, 1996Tumanov, 1997aBiserov, 1996a McInnes, 1994Tumanov, 1997bBiserov, 1996bMcInnes, 1995Tumanov, 2003aBiserov, 1998Michalczyk and Kaczmarek, 2003aTumanov, 2003bBiserov, 1999aMichalczyk and Kaczmarek, 2003bTumanov, 2004Biserov, 1999bMichalczyk and Kaczmarek, 2003cVan-Rompu et al. 1995Biserov et al., 2001Miller et al., 1995Van-Rompu and De-Smet, 1996Biserov and Gerlach, 1998Van-Rompu and De-Smet, 1998Chang and Rho, 1996Vargha, 1995Claps and Rossi, 1997Nelson et al., 1999Vargha, 1998Claxton 1998Nelson and McGlothlin, 1996Vargha, 2000Claxton 1999Pilato, 1996Vasquez and Vargas, 2003Claxton, 2001Pilato and Binda, 1994Yang, 1999Dastych, 1997Pilato and Binda, 1996aYang, 2002aDastych, 1999Pilato and Binda, 1996bYang, 2002bDastych, 2000Pilato and Binda, 1997Yang, 2003Dastych, 2002Pilato and Binda, 1998a ...
This study was designed to examine the entire species description process of limnoterrestrial tardigrades up until the present,
and to establish the effects of several variables on this process. Information from monographs, revisions and published papers
related to limnoterrestrial tardigrades was assessed using generalized linear models (GLM) and variance partition. Our findings
reveal the tardigrade species description process fails to show an asymptotic tendency. That is, at the current description
rate, we will not get to know all the species in the short- or mid-term. The variables examined served to explain about half
of the process variance. Species distribution areas and variables related to their presence in each region were the factors
found to have the greatest explanatory capacity. Our analysis indicates that insufficient efforts have been invested in the
tardigrades compared to other invertebrates (such as Insecta: Coleoptera), and that there is a need for more taxonomists and
more extensive sampling areas. Studies such as this will be useful for planning future species sampling campaigns, and help
us to improve our methodological approach to investigations aimed at conservation and the preservation of biodiversity.
This study was designed to examine the entire species description process of limnoterrestrial tardigrades up until the present,
and to establish the effects of several variables on this process. Information from monographs, revisions and published papers
related to limnoterrestrial tardigrades was assessed using generalized linear models (GLM) and variance partition. Our findings
reveal the tardigrade species description process fails to show an asymptotic tendency. That is, at the current description
rate, we will not get to know all the species in the short- or mid-term. The variables examined served to explain about half
of the process variance. Species distribution areas and variables related to their presence in each region were the factors
found to have the greatest explanatory capacity. Our analysis indicates that insufficient efforts have been invested in the
tardigrades compared to other invertebrates (such as Insecta: Coleoptera), and that there is a need for more taxonomists and
more extensive sampling areas. Studies such as this will be useful for␣planning future species sampling campaigns, and help
us to improve our methodological approach to␣investigations aimed at conservation and the preservation of biodiversity.
Riassunto-Uno studio sulla fauna tardigradologica di ambiente terrestre delle Marche e dell'Umbria, il terzo condotto dal nostro gruppo di ricerca, ha portato all'indi-viduazione di 26 specie, una delle quali, Diphascon (Diphascon) humicus, è nuova per la scienza ed una è segnalata per la prima volta per l'area studiata; di un'altra specie, Ramazzottius affinis, era finora noto soltanto il materiale tipico proveniente dall'area oggetto di studio. Diphascon humicus n. sp. è caratterizzato dalla presenza di tre macro-placoidi bastoncellari e microplacoide, e mostra tra tubo boccale e tubo faringeo una struttura sclerificata a forma di goccia insolitamente piccola, che permette di distinguer-lo da quasi tutte le altre specie dello stesso sottogenere; infatti, soltanto D. (D.) higginsi ha quell'ispessimento molto ridotto (e appiattito); Diphascon humicus si distingue però da questa specie per l'assenza di septulum, per l'assenza di barrette cuticolari sulle zampe e per la presenza di unghie a base completamente liscia. Abstract-Further contribution to the knowledge on the tardigrades {rom the Marches and Umbria. This study, the third of ours on the tardigrades from terrestri al habitas in the regions of the Marches and Umbria, has identified 26 species, one of which, Diphascon (Diphascon) humicus was new to science and another new to the area. Moreover, for Ramazzottius affinis, only type material was known to date from the area examined in this study. Diphascon humicus n. sp. is characterised by three rod-like macroplacoids and a microplacoid, and it shows a very small, drop-shaped sclerified structure between the buccal and pharyngeal tubes. This structure distinguishes this species from most of the others of the same subgenus. Qnly D. (D.) higginsi has a similarly small drop-like structure (but more flattened). However, Diphascon humicLls n. sp. can be distinguished from this species by the absence of the septulum in the bulb and of cuti-colar bars on the legs and by the presence of claws with completely smooth base.
El/OGEOGHAPHIA - vol‘ XV/I — 1993 (Pubblfcalo I131 oltobre 1994) p II popolamento animale e vegetale de||’Appennino Umbro—Marchigiano Tardigradi dell’Appennino umbro—marchigiano ROBERTO BERTOLANI, ROBERTO GUIDETTI e LORENA REBECCHI Dz'pzzrtz'meI1lo di Biologia Animczle de[l’Um'z1ersz'tz2 dz’ Modem Key words: Tardigrada, Taxonomy, Biogeography, Apennines M.ts, Ra/7zazz0ttz'zz: zzfliizis n. sp. SUMMARY We carried out a faunistic study on tardigrades living in different terrestrial habitats of the Urnbria and Marches Apennines. The investigation led to the identification of 32 species, including Rzmzazzattius afliizzlr that is new to science, and Hypribztr pedrattiz‘ known only for the Marches. The species can be grouped on the basis of their different chorology. In particular, the percentage frequency of the species for most groups is similar to that found in the islands neighbouring Sicily. Moreover, attention is focused on the genus Ramtzzzottius, consi- sting prevalently of species with a limited geographical range and thus significant biogeographical bearing. INTRODUZIONE Diverse specie di Tardigradi possiedono geonernia estremamente arnpia e non di rado distribuzione discontinua. Tali condizioni sono favorite dalla capa- cita di questi animali di entrare in criptobiosi permanendovi anche per lunghi periodi e di percorrere in questo stato notevoli distanze utilizzando una disper- sione di tipo passivo. Appare pertanto evidente il motivo per cui questo gruppo anirnale e stato generalmente trascurato dal punto di vista zoogeografico. Tutta— via, si e lontani dall’aver dirnostrato Che tutte le specie di Tardigradi possiedono notevoli capacita di vita latente; inoltre, ben poco si conosce sulla nicchia ecolo- gica delle varie specie e sulla loro eventuale esigenza di particolari microhabitat in grado di condizionare la loro dispersione. Maggiori conoscenze sono state in- vece acquisite in questi ultirni decenni dal punto di vista sistematicogin conse- guenza di un approfondimento dei criteri tassonornici applicati a questo gruppo animale. Questo ha portato ad un forte incremento delle specie note e soprat- tutto all’individuazione, per una cospicua parte di esse, di una distribuzione geografica limitata. Binda 8: Pilato (1973), analizzando la fauna tardigradolo- gica di alcune piccole isole circurnsiciliane, hanno potuto formulate, pur con le dovute cautele, l’ipotesi Che anche questo gruppo di invertebrati sia in grado di fornire indicazioni utili per considerazioni a carattere biogeografico. I dati che qui riferiarno rappresentano, dopo circa vent’anni, la prima veri- fica di tale ipotesi; essi portano inoltre un contributo alla conoscenza della fauna tardigradologica dell’Appennino urnbro-marchigiano, area finora decisamente poco studiata da questo punto di vista. Infatti, 21 parte i limitati riferimenti di Ra- mazzotti (1945) 6: Maucci (1951-52), le notizie di letteratura sui Tardigradi di Marche ed Umbria provengono esclusivamente da ricerche condotte negli ul- 113
Terrestrial samples from diverse areas of the Caucasus yielded 51 species of tardigrades, 6 of which are new to the Russian fauna and 6 of which are new to science (one species is not described here). Macrobiotus altitudinalis sp, n. is similar to M. harmsworthi and differs from the latter by larger claws and dimensions of all other structures. Macrobiotus walteri sp. n. is similar to M. crenatus, but can be distinguished by peculiarities shown by adult animals and eggs. Ramazzottius caucasicus sp. n. and R. andreevi sp. n. differ from other species of the genus mainly by peculiarities of the eggs. R. ljudmilae sp. n. is similar to R. cataphractus but differs from it by the presence of accessory points on main branches of the claws and by another form of egg processes. The tardigrade fauna of the Caucasus is reviewed and the zoogeography of the species is analyzed. Some problems of the genus Ramazzottius are discussed, and a world-wide key to its species is given.
Terrestrial, freshwater and marine samples from several areas of Novaya Zemlya (South Is.) yielded 59 species of tardigrades, four of which are new to science (three of which are described here): Isohypsibius glazovi sp. n.; Rawzazzottius rupeus sp. n.; Mixibius ninguidus. The tardigrade fauna of Novaya Zemlya, now 76 species, is reviewed and the zoogeography of the species is analysed. The state of the environment in the Archipelago, according to its tardigrade fauna, is good.
The Authors give new data to complete and/or correct the descriptions of a lot of species of Tardigrades.
The literature on terrestrial and freshwater Tardigrada is relatively limited, being concerned with 617 species world wide. Many of the references are in obscure publications. This paper attempts to bring this information together, tabulating the numbers of tardigrade species recorded from terrestrial and freshwater habitats in various countries and the number of countries from which tardigrades have been recorded. Each record is cross-referenced to the author in the references. It is hoped this paper will serve as a reference point and background for further zoogeographic studies.
Thirty-one species of eutardigrades were collected on five mountains on Vancouver Island, British Columbia, during July 1986 and July 1987. Three of the species found were new to science, including 1 species, Platicrista cheleusis n.sp., described herein and 2 species described elsewhere, and 21 others are new to British Columbia; 13 of these are also new to Canada.
This is the first report on tardigrades from the Taimyr peninsula. Seventy-one species of tardigrades were recorded, new to Russian fauna and two of which are new to science. Diphascon boreale sp. nov. is closely related to D. brevipes (Marcus, 1936) but easily distinguished from it by claw structure and the absence of cuticular bars on the legs. Isohypsibius roberti sp. nov. belongs to the elegans group of the genus Isohypsibius; it diners from other species in the group by having a long and thin buccal tube and large lunulae with small teeth on leg IV. The eggs of Ramazzottius montivagus are here described for the first time. The almost complete absence of tardigrades in and around Norilsk is noted. This is related to the heavy industrial pollution from a local nickel-copper plant.