Acari: Limnic Oribatida

Weigmann, Gerd; Deichsel, Ralf

doi:10.1007/978-3-662-55958-1_4

Cited by 30 publications

(47 citation statements)

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“…The juveniles of H. lacustris accounted for ca. 30% of all Hydrozetes mites at pool LP and 10% at pool K. 1976;WEIgMANN 2006;WEIgMANN & DEIcHSEL 2006) and is often found on floating Sphagnum moss and algae (WILLMANN 1931;POPP 1962;WEIgMANN 2006;WEIgMANN & DEIcHSEL 2006). WALgRAM (1976) observed in Austria that at pH 3.0-3.5, 100% of Hydrozetes mites belonged to H. lacustris, while at pH 4.0-4.5, only 95%.…”

Section: Resultsmentioning

confidence: 99%

“…In Russia it was recorded only in eutrophic bogs near Moscow, in contrast to H. lacustris, which occurred in oligotrophic bogs (DRUK 1982). H. confervae was found mainly in filamentous algae of the family Confervaceae (= Ulotrichaceae) (ScHRANK 1781; OUDEMANS 1897) and on duckweed (WEIgMANN 2006;WEIgMANN & DEIcHSEL 2006;). Interestingly, in this study it lived in Sphagnum mosses at pond edges in the Tatra National Park and was the most abundant Hydrozetes species there.…”

Section: Resultsmentioning

confidence: 99%

“…Hydrozetes is an aquatic genus represented in Europe by 7 species (SENIcZAK et al 2007SENIcZAK & SENIcZAK 2008, 2009) that live in lakes, ponds, and slowly flowing water (WEIgMANN 2006;WEIgMANN & DEIcHSEL 2006). Two of them [H. confervae (Schrank, 1781) and H. thienemanni Strenzke, 1943] reproduce bisexually, while the others [H. lacustris (Michael, 1882), H. lemnae (Coggi, 1897), H. longisetosus S. , H. octosetosus Willmann, 1932and H. parisiensis Grandjean, 1948 are parthenogenetic and reproduce by thelytoky (gRANDJEAN 1948;).…”

Section: Introductionmentioning

confidence: 99%

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Hydrozetes species (Acari, Oribatida) at bog ponds and pools in the Tatra National Park and Orawa-Nowy Targ Basin (Kotlina Orawsko-Nowotarska) in southern Poland

Mistrzak

Seniczak

2011

Biological Letters

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Abstract:The Hydrozetes fauna was investigated at the edges of 4 ponds and pools with acid water in southern Poland. Mites of this genus achieved the highest mean abundance (6×10 4 ind./m²) at a pond in the Tatra National Park (Staw Toporowy Niżni; pH = 3.9; 1089 m a.s.l.). H. confervae dominated there (98%), accompanied by H. octosetosus and H. lacustris. The same species were also present at a nearby pond (Staw Toporowy Wyżni; pH 3.9; 1120 m a.s.l.), but in significantly lower numbers. In the bogs of the Orawa-Nowy Targ Basin, at the edge of pool in Kaczmarka (pH 3.6; 650 m a.s.l.), H. lacustris and H. octosetosus were present, and the former species dominated (73%). The latter species is interesting, because it was not recorded in Europe until recently. At the other pool, in Łysa Puścizna (pH 4.5; 650 m a.s.l.), only H. lacustris was present. The lower abundance and species richness of Hydrozetes at the bog pools in the Orawa-Nowy-Targ Basin, in comparison to the Tatra National Park, was probably caused by poorer water conditions, due to more advanced succession, peat exploitation and disturbed water conditions in the Basin.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hydrozetes species (Acari, Oribatida) at bog ponds and pools in the Tatra National Park and Orawa-Nowy Targ Basin (Kotlina Orawsko-Nowotarska) in southern Poland

Mistrzak

Seniczak

2011

Biological Letters

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“…The length and shape of gastronotal setae are variable in both H. lemnae and H. thienemanni, but more in the former species. This differentiates them from similar stages of H. lacustris, in which these setae are thin and flexible (Weigmann & Deichsel 2006;Seniczak et al 2007). Therefore, these morphological characteristics may be used to separate the juvenile stages of these species in ecological investigations and also to enrich the diagnoses of species.…”

mentioning

confidence: 85%

“…The larvae of these species are unknown, while the nymphs were partly investigated by Grandjean (1948) and Weigmann & Deichsel (2006); the latter authors also prepared a key to nymphs of five European species, including H. lemnae and H. thienemanni. Grandjean (1948) mentioned the variation of gastronotal setae in the nymphs of H. lemnae and H. thienemanni, while Weigmann & Deichsel (2006) showed it only in H. lemnae. In reality, setal variation occurs in the larva and nymphal stages of both species, but it has not been investigated in details.…”

Section: Introductionmentioning

confidence: 99%

Setal variability of Hydrozetes lemnae and H. thienemanni (Acari: Oribatida: Hydrozetidae)

Seniczak

2008

Biologia

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Setal variability and the other morphological characters of juvenile stages and adult of Hydrozetes lemnae (Coggi, 1897) and H. thienemanni Strenzke, 1943 were investigated. In the juveniles of both species the length and shape of some setae vary, especially in the gastronotic region, more so in H. lemnae, which is parthenogenetic and reproduces by thelytoky, than in H. thienemanni, which is dioecious. The former species usually has more thick setae in the anterior and medial regions of the gastronotum, especially in the larva, compared to the latter. In the juveniles of H. lemnae the prodorsal setae le and in are longer, and in the nymphs the gastronotal setae of the l-series are usually longer than in H. thienemanni. These species differ distinctly by the number of long setae in the posterior part of the nymphs; in H. lemnae three pairs of long setae occur, while in H. thienemanni only two pairs; the respective juvenile stages of H. lemnae are also smaller than those of H. thienemanni. In the adults the number of c-series setae varies, as seta c1 is lost, and in some individuals also seta c3, and only seta c2 remains.

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Niche dimensions in soil oribatid mite community assembly under native and introduced tree species

Noske,

Lu,

Schaefer

et al. 2024

Ecology and Evolution

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Forest soils are a critical component of terrestrial ecosystems and host a large number of animal decomposer species. One diverse and abundant decomposer taxon is oribatid mites (Acari: Oribatida), whose species composition varies with forest type and tree species composition. We used functional traits that indicate different niche dimensions, to infer assembly processes of oribatid mite communities in monocultures and mixed forests of native and introduced tree species. We found that coexisting species differed more in the resource‐related niche dimension, i.e., reproductive mode and trophic guild, than in the morphological dimension, e.g., body length and width, sclerotization and concealability. These results suggest that both filtering and partitioning processes structure oribatid mite communities. In native European beech forests, but not in non‐native Douglas fir forests, oribatid mites were mainly structured by filtering processes acting via traits related both to environmental tolerance and to resources. Furthermore, oribatid mite trait diversity, but not phylogenetic diversity, differed significantly between monocultures and mixed forests, demonstrating that multidimensional diversity indices provide additional information on soil biodiversity. Overall, the study provides evidence that traits representing different niche dimensions need to be considered for understanding assembly processes in soil animal communities and thereby soil biodiversity.

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Acari: Limnic Oribatida

Cited by 30 publications

References 3 publications

Hydrozetes species (Acari, Oribatida) at bog ponds and pools in the Tatra National Park and Orawa-Nowy Targ Basin (Kotlina Orawsko-Nowotarska) in southern Poland

Hydrozetes species (Acari, Oribatida) at bog ponds and pools in the Tatra National Park and Orawa-Nowy Targ Basin (Kotlina Orawsko-Nowotarska) in southern Poland

Setal variability of Hydrozetes lemnae and H. thienemanni (Acari: Oribatida: Hydrozetidae)

Niche dimensions in soil oribatid mite community assembly under native and introduced tree species

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