A1 Journal article (refereed)
Lifting the Vendace, Coregonus albula, on the Life Table : Survival, Growth and Reproduction in Different Life-Stages during Very High and Low Abundance Regimes (2021)

Marjomäki, T. J., Valkeajärvi, P., & Karjalainen, J. (2021). Lifting the Vendace, Coregonus albula, on the Life Table : Survival, Growth and Reproduction in Different Life-Stages during Very High and Low Abundance Regimes. Annales Zoologici Fennici, 58(4-6), 177-189. https://doi.org/10.5735/086.058.0406

JYU authors or editors

Publication details

All authors or editors: Marjomäki, Timo J.; Valkeajärvi, Pentti; Karjalainen, Juha

Journal or series: Annales Zoologici Fennici

ISSN: 0003-455X

eISSN: 1797-2450

Publication year: 2021

Publication date: 06/09/2021

Volume: 58

Issue number: 4-6

Pages range: 177-189

Publisher: Finnish Zoological and Botanical Publishing Board

Publication country: Finland

Publication language: English

DOI: https://doi.org/10.5735/086.058.0406

Publication open access: Not open

Publication channel open access: 

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/78469

Abstract

We analyzed the variability in vendace population parameters in the context of a life table. Parameters related to growth, fecundity and survival were estimated for post-recruitment (age > 1 growing season) life stages of Lake Southern Konnevesi vendace in both very high and low population abundance regimes. Pre-recruitment survival producing population stability was then determined. We found a very strong compensatory density dependence in growth, fecundity and survival: during low abundance, a lifetime reproductive output of a female was almost 20 times that of the abundant regime. To maintain the low abundance regime, pre-recruitment survival must counterbalance it by decreasing to a very low level. Potential drivers of high variability in pre-recruit survival and potential for depensation, Allee effect, are discussed, as well as the implications of the results on fisheries management and risk of extinction due to anthropogenic stressors such as global warming or extensive predator stocking.

Keywords: vendace; fish populations; population dynamics; life cycle (natural science); reproduction (biology); survival

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2021

JUFO rating: 1