scholarly journals Comparative and functional morphology of the mouthparts in larvae of Parasitengona (Acariformes)*

Zoosymposia ◽  
2011 ◽  
Vol 6 (1) ◽  
pp. 14-23 ◽  
Author(s):  
ANDREY B. SHATROV
Keyword(s):  
Functional Morphology ◽  
Ultrastructural Organization ◽  
Functional Specialization ◽  
Evolutionary Trends ◽  
Water Mites ◽  
Dorsal Shield ◽  
Water Mite ◽  
Thin Sections ◽  
Whole Mount

Anatomy and ultrastructural organization of the larval mouthparts in representatives of terrestrial (Trombiculidae parasitizing vertebrates and Microtrombidiidae parasitizing arthropods) as well as aquatic (Pionidae and Hydrodromidae parasitizing arthropods) families from the cohort Parasitengona were studied using whole-mount preparations, semi-thin sections and TEM and SEM methods. In these groups, the organization of the mouth apparatus differs significantly especially with regard to their particular functional specialization and adaptations reflecting evolutionary trends in these groups. In trombiculid larvae, the mouthparts reveal the simplest organization. The gnathosoma is totally free, the infracapitulum and the basal cheliceral segments are short and wide, and the latter are separated from each other. The flexible lateral lips form a temporary sucker, distinguishable when the larva feeds, and the pharynx is totally fused with the bottom of the infracapitulum. In microtrombidiid larvae, the gnathosoma is covered by the arched dorsal shield, the chelicerae are comparatively long and separated, and the lateral lips form a permanent sucker provided with an internal sclerite. Conversely, in water mite larvae, the chelicerae are fused together and either partially (Piona carnea) or totally (Hydrodroma despiciens) free from the overhanging idiosomal fold. The lateral lips are flexible and organized freely, and the pharynx is totally separated from the bottom of the infracapitulum. In general, water mite larvae show significant variations and specializations but at the same time seem to possess the most plesiomorphic characters in organization of the mouth apparatus. The ancestral parasitengone may have given rise to divergent groups of water mites as such, as well as to trombiculids with the secondary simplification of the mouth apparatus and to microtrombidiids with their particular additional adaptations and specialization in organization of the mouthparts.

A description of two new species of water mites of the genus Torrenticola Piersig, 1896 (Acariformes: Hydrachnidia: Torrenticolidae) from the Krasnodar Kray, Russia

2013 ◽  
Vol 22 (2) ◽  
pp. 181-188
Author(s):  
P.V. Tuzovskij
Keyword(s):  
New Species ◽  
Mite Species ◽  
Running Waters ◽  
Water Mites ◽  
North Caucasus ◽  
Water Mite ◽  
The North ◽  
Two New Species

Two new water mite species, Torrenticola amplexella and T. krasnodarensis, from running waters of the North Caucasus (Krasnodar Kray) are described with illustrations.

On the systematics of the water mites Hygrobates nigromaculatus Lebert, 1879 and H. setosus Besseling, 1942 (Acari, Hydrachnidia, Hygrobatidae)

Zootaxa ◽  
2017 ◽  
Vol 4277 (1) ◽  
pp. 17 ◽  
Author(s):  
PETR V. TUZOVSKIJ
Keyword(s):  
Comparative Analysis ◽  
Water Mites ◽  
Water Mite

The first description of the deutonymph of the water mite Hygrobates setosus and a redescription of larvae, females and males of H. nigromaculatus and H. setosus are presented, with a comparative analysis of some morphological structures in all active stages of both species. 

scholarly journals Drifting Behaviour of Aquatic Mites and Regulating Ecological Parameters in Khankragad Stream, A Springfed Trubutary of Alaknanda River, Rudrarayag, Garhwal, Uttarakhand, India

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Shailza Negi ◽  
Pankaj Bahuguna ◽  
Anoop Dobriyal
Keyword(s):  
Water Quality ◽  
Environmental Changes ◽  
Sampling Period ◽  
Mite Species ◽  
Water Mites ◽  
Water Mite ◽  
Physico Chemical ◽  
Ecological Parameters ◽  
Drift Behavior ◽  
Set Up

Water mites are a large group of macroinvertebrates that are very vulnerable to contamination and environmental changes. As a result, they are often used to monitor water quality. Khankra gad stream, a third-order perennial spring-fed stream of the Alaknanda River in Uttarakhand, India, was studied to determine the drift behavior of water mites and water quality. Drift nets were set up for 24 hours in both spots of the Khankra stream where there was little or no human influence over a two-year sampling period (June 2018-20). Every four hours, the nets were changed out with new ones. Water mites signify a particular drift month and diel drift pattern. The majority of the drift mite species were present in considerably higher numbers in the daytime. During the two-year study period, a total of 2503 mite samples were collected from the Khankra stream, from which 204 water mite species drifted. The least number of Hydrachnidia (694) were collected from Spot-1, and the highest (1809) were collected from Spot-2, with 106 water mites drifting from Spot-1 and 134 mites drifting from Spot-2 during the study period. From Spot-2 maximum 25 mite species were collected and minimum 19 mite species were collected from Spot-1. For various mite species, the DBDI value ranged from 0.155 (July) to 0.204 (April) in Spot-1 and 0.134 (July) to 0.149 (February) in Spot-2. It was also observed that maximum water mite species were day-drifter. The physico-chemical parameters of the Khankra stream were also reported. The effect of ecological parameters on mite drift was investigated using Canonical correspondence analysis (CCA).

New water mites species (Acariformes: Hydrachnidia) from the Far East of Russia

Zootaxa ◽  
2009 ◽  
Vol 2241 (1) ◽  
pp. 1-21
Author(s):  
PETR V. TUZOVSKIJ ◽  
KSENIA A. SEMENCHENKO
Keyword(s):  
Far East ◽  
Mite Species ◽  
Far East Of Russia ◽  
Water Mites ◽  
Water Mite ◽  
The Far East ◽  
Standing Waters

Illustrated descriptions of five water mite species, Sperchon (Hispidosperchon) nevelskoii sp. n., Teutonia (Subteutonia) minor sp. n., Lebertia (Mixolebertia) sokolowi sp. n., Mixobates amurensis sp. n. and Feltria (Feltria) orientalis sp. n., from running and standing waters of the Far East of Russia are presented.

New records of water mites (Acari: Hydrachnidia) from Tasmania, with descriptions of three new species

Zootaxa ◽  
2009 ◽  
Vol 2070 (1) ◽  
pp. 53-62 ◽  
Author(s):  
VLADIMIR PESIC ◽  
HARRY SMIT
Keyword(s):  
New Species ◽  
New Records ◽  
Water Mites ◽  
Water Mite ◽  
Biological Survey ◽  
Three New Species ◽  
Interstitial Waters

Three new water mite (Acari: Hydrachnidia) species are described from Tasmania, Tasmanobates separatus sp. nov., Procorticacarus karanovici sp. nov. and Guineaxonopsis tasmanica sp. nov. The material was collected in 2008 during a biological survey by Tom and Ivana Karanović (Hobart, Tasmania) from surface and interstitial waters of Tasmania. Moreover, a detailed description of Litarachna cf. amnicola Cook, 1986 is given.

New records of water mites (Acari: Hydrachnidia) from Sri Lanka with description of four new species and some remarks of relationships

2020 ◽  
Vol 25 (9) ◽  
pp. 1589-1610
Author(s):  
Andrzej Zawal ◽  
Izabela Szućko ◽  
Magdalena Szenejko ◽  
Lidia Skuza ◽  
Aleksandra Bańkowska ◽  
...  
Keyword(s):  
New Species ◽  
Sri Lanka ◽  
New Records ◽  
Dna Barcodes ◽  
Water Mites ◽  
Water Mite ◽  
Standing Waters ◽  
First Time

New records of water mites (Acari: Hydrachnidia) from the standing waters of Sri Lanka are presented. Fifteen species have been registrated, among them four species, i.e. Piona srilankana (Pionidae), Neumania edytae (Unionicolidae), Krendowskia (Krendowskiella) srilankana (Krendowskiidae), and Mideopsis ewelinae (Mideopsidae) are described as new to science. DNA was extracted from 18 water mite specimens and DNA barcodes are given for the first time for nine species.

Water mites of the genus Sperchon Kramer (Acari: Hydrachnidia: Sperchontidae) from Turkey, with description of two new species

Zootaxa ◽  
2010 ◽  
Vol 2514 (1) ◽  
pp. 35 ◽  
Author(s):  
YUNUS ESEN ◽  
VLADIMIR PEŠIĆ ◽  
ORHAN ERMAN
Keyword(s):  
New Species ◽  
New Records ◽  
First Record ◽  
Mite Species ◽  
Published Data ◽  
Water Mites ◽  
Water Mite ◽  
Two New Species

A survey is given of the distribution of the water mite species of the genus Sperchon Kramer (Acari: Hydrachnidia: Sperchontidae) in Turkey, based on all published data and numerous new records. Sperchon (Hispidosperchon) oezkani and S. (Sperchon) ayyildizi are described as new species; Sperchon fundamentalis Bader & Sepasgozarian, 1980 is synonymized with S. glandulosus Koenike, 1886; the first record from Turkey is given for Sperchon (Hispidosperchon) tarnogradskii Sokolow, 1927.

scholarly journals Does parasitism mediate water mite biogeography?

2020 ◽  
Vol 25 (9) ◽  
pp. 1552-1560
Author(s):  
Hiromi Yagui ◽  
Antonio G. Valdecasas
Keyword(s):  
Geographic Distribution ◽  
Larval Stage ◽  
Extreme Values ◽  
Empirical Distribution ◽  
Distribution Patterns ◽  
Mite Species ◽  
Distribution Functions ◽  
Dispersal Ability ◽  
Water Mites ◽  
Water Mite

The biogeography of organisms, particularly those with complex lifestyles that can affect dispersal ability, has been a focus of study for many decades. Most Hydrachnidia, commonly known as water mites, have a parasitic larval stage during which dispersal is predominantly host-mediated, suggesting that these water mites may have a wider distribution than non-parasitic species. However, does this actually occur? To address this question, we compiled and compared the geographic distribution of water mite species that have a parasitic larval stage with those that have lost it. We performed a bootstrap resampling analysis to compare the empirical distribution functions derived from both the complete dataset and one excluding the extreme values at each distribution tail. The results show differing distribution patterns between water mites with and without parasitic larval stages. However, contrary to expectation, they show that a wider geographic distribution is observed for a greater proportion of the species with a non-parasitic larval stage, suggesting a relevant role for non-host-mediated mechanisms of dispersal in water mites.

Description of a new species of Anisitsiellidae Koenike, 1910 (Acari, Hydrachnidia), the first record of the family from China

Zootaxa ◽  
2009 ◽  
Vol 2158 (1) ◽  
pp. 50-56
Author(s):  
TIANCI YI ◽  
DAOCHAO JIN ◽  
JIANJUN GUO
Keyword(s):  
New Species ◽  
Geographical Location ◽  
First Record ◽  
Water Mites ◽  
Water Mite ◽  
The Family ◽  
A New Species ◽  
Rich Fauna

Considering the geographical location of China, a very rich fauna of water mites should be expected. Previously, seventeen families have been reported from China (Jin, 1997; Smit, 2002; Guo & Jin, 2005): Eylaidae Leach, 1815, Limnocharidae Grube, 1859, Hydryphantidae Piersig, 1896, Hydrodromidae Viets, 1936, Hydrachnidae Leach, 1815, Sperchontidae Thor, 1900, Lebertiidae Thor, 1900, Oxidae Viets, 1926, Teutoniidae Koenike, 1910, Limnesiidae Thor, 1900, Hygrobatidae Koch, 1842, Unionicolidae Oudemans, 1909, Pionidae Thor, 1900, Mideopsidae Koenike, 1910, Arrenuridae Thor, 1900 and Pontarachnidae Koenike, 1910. The species described in this paper belongs to the subgenus Dartia Soar, 1917 in the genus Nilotonia Thor, 1905 of the family Anisitsiellidae Koenike, 1910, which increases the number of known water mite families in the Chinese fauna to eighteen.

Studies on water mites (Acari, Hydrachnidia) from the Himalayas, I. The water mite genus Feltria Koenike, with descriptions of eight new species

Zootaxa ◽  
2008 ◽  
Vol 1758 (1) ◽  
pp. 1
Author(s):  
VLADIMIR PESIC ◽  
ARNE PANESAR
Keyword(s):  
New Species ◽  
Water Mites ◽  
Water Mite ◽  
Indian Water ◽  
New Information ◽  
Indian Himalayas ◽  
Mite Genus

New information about the distribution of species of the water mite genus Feltria Koenike (Acari: Hydrachnidia, Feltriidae) in the Indian Himalayas is presented. Eight species (Feltria indica, F. tuzovskyi, F. schwoerbeli, F. himachali, F. kulluis, F. balneatoris, F. sannae and F. gereckei) are described as new to science; F. rubra Piersig, 1898 and F. longipalpis (Lundblad, 1941) are new to the Indian water mite fauna and for the latter species the first description of the female is provided.

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