A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Cyclopoids feed selectively on free‐living stages of parasites (2020)
Mironova, E., Gopko, M., Pasternak, A., Mikheev, V., & Taskinen, J. (2020). Cyclopoids feed selectively on free‐living stages of parasites. Freshwater Biology, 65(8), 1450-1459. https://doi.org/10.1111/fwb.13512
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Mironova, Ekaterina; Gopko, Mikhail; Pasternak, Anna; Mikheev, Viktor; Taskinen, Jouni
Lehti tai sarja: Freshwater Biology
ISSN: 0046-5070
eISSN: 1365-2427
Julkaisuvuosi: 2020
Volyymi: 65
Lehden numero: 8
Artikkelin sivunumerot: 1450-1459
Kustantaja: Wiley-Blackwell
Julkaisumaa: Britannia
Julkaisun kieli: englanti
DOI: https://doi.org/10.1111/fwb.13512
Linkki tutkimusaineistoon: https://figshare.com/articles/Supplementary_data_to_the_paper_Cyclopoids_feed_selectively_on_free-living_stages_of_parasites_by_Mironova_E_Gopko_M_Pasternak_A_Mikheev_V_Taskinen_J_Item/7894823
Julkaisun avoin saatavuus: Ei avoin
Julkaisukanavan avoin saatavuus:
Tiivistelmä
2. We experimentally studied ingestion rates of cyclopoids Macrocyclops distinctus fed with cercariae of trematode Diplostomum pseudospathaceum, a common and harmful parasite of freshwater fishes, and ciliates Paramecium caudatum (an alternative prey, known as suitable food for copepods). First, the feeding response of cyclopoids to different densities of each prey was studied. Then, feeding selectivity in the mixtures of cercariae and ciliates was tested.
3. Feeding rates of cyclopoids increased with prey densities (both ciliates and cercariae) but almost stopped growing at high prey densities, which indicated saturation (Holling type II functional response). In most cases, cyclopoids consumed cercariae at higher rates than ciliates. Maximum ingestion rates estimated from the obtained curves were 37 cercariae ind−1 hr−1 and 17 ciliate ind−1 hr−1.
4. When exposed to prey mixtures, cyclopoids fed on cercariae selectively. When cercariae were offered to cyclopoids at concentrations exceeding the saturation level, the ingestion of ciliates remained constantly low at all ciliate densities. In contrast, the ingestion of cercariae increased with rising cercariae densities even when ciliates were presented ad libitum, decreasing only at very high prey densities. Possible reasons of such feeding preferences are discussed.
5. Our study demonstrated that cyclopoids may prefer to feed on cercariae when there is an alternative food choice and can ingest cercariae at high rates. These experimental results could be extended to natural communities, suggesting that cyclopoids can reduce the transmission of parasites and contribute to the incorporation of parasite production in food webs of lentic ecosystems.
YSO-asiasanat: hankajalkaiset; makea vesi; ekosysteemit (ekologia); ravinnonotto (kasvit)
Vapaat asiasanat: copepods; Diplostomum; freshwater ecosystem; ingestion rates; Paramecium
Liittyvät organisaatiot
Hankkeet, joissa julkaisu on tehty
- Loisten käyttäytymissopeumat suojautumis
- Taskinen, Jouni
- Suomen Akatemia
- Kalojen puolustautuminen loisia vastaan: käyttäytymisen ja suojapaikkojen merkitys
- Taskinen, Jouni
- Suomen Akatemia
OKM-raportointi: Kyllä
Raportointivuosi: 2020
JUFO-taso: 2