Dietary preferences and diet effects on life-history traits of tardigrades

0531361 - BC 2021 RIV DE eng J - Článek v odborném periodiku
Bryndová, Michala - Stec, D. - Schill, R.O. - Michalczyk, Ł. - Devetter, Miloslav
Dietary preferences and diet effects on life-history traits of tardigrades.
Zoological Journal of the Linnean Society. Roč. 188, č. 3 (2020), s. 865-877. ISSN 0024-4082. E-ISSN 1096-3642
Grant CEP: GA MŠMT(CZ) LTC17019
Institucionální podpora: RVO:60077344
Klíčová slova: feeding traits * gut contents * Hypsibius exemplaris * LHT * Milnesium inceptum * Paramacrobiotus fairbanksi * reproductive success * starvation resistance * survival * Tardigrada * water bears
Obor OECD: Zoology
Impakt faktor: 3.286, rok: 2020
Způsob publikování: Omezený přístup
https://academic.oup.com/zoolinnean/article-abstract/188/3/865/5708952?redirectedFrom=fulltext

Tardigrades may be divided into the following feeding groups: herbivores, carnivores and omnivores. However, little is known about their specific feeding preferences. Here, we used a number of laboratory experiments with 18 potential food sources, representing a wide variety of organisms, to test feeding preferences, survival and fecundity of three tardigrade species, representing different feeding modes. We also tested for differences in preferences between juveniles and adults, and differences in survival between two age groups: one that started the experiment as juveniles and the other as adults. In our experiments, Milnesium inceptum is confirmed to be a carnivore, being able to reproduce only on animal prey. We also show that Hypsibius exemplaris is a herbivore, feeding on cyanobacteria, algae and fungi. Paramacrobiotus fairbanksi, on the other hand, is demonstrated to be an omnivore, feeding on cyanobacteria, algae, fungi and animals. In some cases, juveniles preferred different types of food than adults. Reproduction was strongly affected by food type. Finally, we demonstrate that tardigrades may ingest food types that they are not able to digest. Thus, gut content analysis may be misleading as a method of studying tardigrade feeding habits.
Trvalý link: http://hdl.handle.net/11104/0310462