No effect of recent sympatry with invasive zebra mussel on the oviposition decisions and reproductive success of the bitterling fish, a brood parasite of unionid mussels

0468668 - ÚBO 2018 RIV NL eng J - Článek v odborném periodiku
Bartáková, Veronika - Reichard, Martin
No effect of recent sympatry with invasive zebra mussel on the oviposition decisions and reproductive success of the bitterling fish, a brood parasite of unionid mussels.
Hydrobiologia. Roč. 794, č. 1 (2017), s. 153-166. ISSN 0018-8158. E-ISSN 1573-5117
Grant CEP: GA ČR GA13-05872S
Institucionální podpora: RVO:68081766
Klíčová slova: Ecological naivety * Population consequences * Rapid adaptation * Unio * Unionida
Obor OECD: Marine biology, freshwater biology, limnology
Impakt faktor: 2.165, rok: 2017

The presence of non-native species can affect coevolved relationships. However, rapid reciprocal changes in coevolutionary associations provide the potential to quickly respond to a new situation. We studied a system where bitterling fish (Rhodeus amarus) parasitize unionid mussels by laying their eggs onto their gills. This association is affected by the infestation of unionid shells by the non-native zebra mussel (Dreissena polymorpha). In a series of experiments under experimental, semi-natural and natural conditions, we compared the behavioural response to zebra mussel infestation of unionid shells, its effect on oviposition decisions and their population consequences between bitterling populations naı¨ve to zebra mussels and those recently sympatric with zebra mussels. We found no effect of recent sympatry on bitterling preoviposition behaviour and oviposition decisions and only a weak effect on their reproductive success. Bitterling from both populations inspected infested and non-infested mussels at the same rate but preferred to oviposit into non-infested unionid hosts. However, neither bitterling population completely avoided oviposition into infested unionids and three ovipositions into zebra mussels were observed. Overall, there was a clear negative relationship between the number of zebra mussels on unionid host shells and the number of juvenile bitterling emerging from the mussels. Our study demonstrated a lack of rapid evolutionary response to adaptively modulate oviposition choice after recent zebra mussel invasion.
Trvalý link: http://hdl.handle.net/11104/0266490