{"refrec":{"BRefID":2510,"RR":"<b>Ten Winkel, E.H.; Davids, C.; De Nobel, J.G.</b> (1989). Food and feeding strategies of water mites of the genus <i>Hygrobates</i> and the impact of their predation on the larval population of their predation on the larval population of the chironomid <i>Gladotanytarsus mancus</i> (walker) in Lake Maarsseveen. <i>Neth. J. Zool. 39(3-4)</i>: 246-263","BEntID":2510,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":". <i>Neth. J. Zool. 39(3-4)</i>: 246-263","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":1,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Ten Winkel, E.H.; Davids, C.; De Nobel, J.G.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Ten Winkel, E.H.; Davids, C.; De Nobel, J.G.","Englishabstract":"The role of several aquatic animals, as food for the water mites <i>Hygrobates nigromaculates</i> and <i>H.trigonicus</i>, was examined. Both water mite speceis are able to enter the sediments and pray on different larval stages of chironomids. <i>H. nigromaculatus</i> fed on both cladocerans and chironomids, while <i>H. trigonicus</i> preyed only upon chironomid larvae. <i>H. trigonicus</i> burrowed in the sediment independent of the presence of prey. In <i>H. nigromaculatus</i> on the contrary, the burrowing activity entirely dissapeared in vials with a high number of <i>Daphnia</i>. Prey vulnerability is significantly increased in experiments without sediment. In a temperature range from 5° to 20°C, prey consumption rates increased about five times. The destiny of the chironomid <i>Cladotanytarsus mancus</i> declined by about 50% (27.000 to 13.000 per m<sup>2</sup>) in winter.<i>Hygrobates</i> (about 1000 per m<sup>2</sup>) was found to be the most important predator, despite the fact that <i>Cladotanytarsus</i> larvae inhabit tubes constructed of sand-grains, which inhibits predation. Due to their small size, benthivorous fish will not feed on these larvae. Virtually no other predators of these chironomids were present. The numerical decline of the chironomid closely matched the population food requirements of the water mite <i>Hygrobates</i> between November and May. It is concluded that the mite is almost entirely responsible for this decline. <i>Cladotanytarsus</i> is an indispensable food source for the mite during winter and spring, and is a source of energy when the eggs of the new generation are formed.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Food and feeding strategies of water mites of the genus <i>Hygrobates</i> and the impact of their predation on the larval population of their predation on the larval population of the chironomid <i>Gladotanytarsus mancus</i> (walker) in Lake Maarsseveen","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1989,"MonPub":null,"DateUpdate":"2003-01-07","DateCreate":"2000-08-24","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":2510,"PubliDate":1989,"Pagination":"246-263","XtraPublOfAnaID":null,"ISBN":null,"Volume":"39","Issue":"3-4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43566,"SerRR":"Netherlands Journal of Zoology. E.J. Brill: Leiden.  ISSN 0028-2960; e-ISSN 1568-542X","StandardTitleSer":"Netherlands Journal of Zoology","ISSN":"0028-2960","AbbrevSer":"Neth. J. 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