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title Enchytraeus crypticus fitness: effect of density on a two-generation study
authors Goncalves, MFM; Gomes, SIL; Soares, AMVM; Scott-Fordsmand, JJ; Amorim, MJB
author full name Goncalves, Micael F. M.; Gomes, Susana I. L.; Soares, Amadeu M. V. M.; Scott-Fordsmand, Janeck J.; Amorim, Monica J. B.
title Enchytraeus crypticus fitness: effect of density on a two-generation study
nationality internacional
language English
document type Article
author keywords Density; Reproduction; Population growth; Size; Growth; Multigeneration
abstract Organisms' density can influence physiological processes related with fitness. In the present study we assessed the influence of organisms' density on the life-history parameters in two consecutive generations in Enchytraeus crypticus (Oligochaeta), a standard model in soil ecotoxicology. The densities tested were 1 (N1) and 20 (N20) organisms per replicate and 10 vs. 20 g of soil (for the 2nd generation test only). Results showed that reproductive output was affected by density, with organisms in N1 producing three times more juveniles per adult than when at N20. Organisms' length was affected by both density and space, i.e., organisms were smaller when less space available. Further, the density of parental generation (F0) had no influence on the endpoints reproduction and length assessed in F1, hence there was no transference of effects. These findings have potential implications in the standard Enchytraeid Reproduction Test, i.e. early mortality of the adults during toxicant exposure can affect the number and size of the offspring and the final results will also reflect the density related changes in reproduction.
author address [Goncalves, Micael F. M.; Gomes, Susana I. L.; Soares, Amadeu M. V. M.; Amorim, Monica J. B.] Univ Aveiro, Dept Biol, P-3810193 Aveiro, Portugal; [Goncalves, Micael F. M.; Gomes, Susana I. L.; Soares, Amadeu M. V. M.; Amorim, Monica J. B.] Univ Aveiro, CESAM, P-3810193 Aveiro, Portugal; [Scott-Fordsmand, Janeck J.] Aarhus Univ, Dept Biosci, Vejlsovej 25,POB 314, DK-8600 Silkeborg, Denmark
reprint address Gomes, SIL (reprint author), Univ Aveiro, Dept Biol, P-3810193 Aveiro, Portugal.; Gomes, SIL (reprint author), Univ Aveiro, CESAM, P-3810193 Aveiro, Portugal.
e-mail address susana.gomes@ua.pt
funding agency and grant number European Commission EU-FP7 SUN [604305]; CESAM [UID/AMB/50017]; FEDER; Compete 2020; [SFRH/BPD/95775/2013]
funding text This study was supported by the European Commission EU-FP7 SUN (G.A. No. 604305), by CESAM (UID/AMB/50017), to FCT/MEC through national funds, the co-funding by the FEDER, within the PT2020 Partnership Agreement and Compete 2020, and a post-doc grant to Susana Gomes (SFRH/BPD/95775/2013).
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cited reference count 19
times cited 1
total times cited count (wos, bci, and cscd) 1
publisher SPRINGER
publisher city DORDRECHT
issn 0963-9292
29-character source abbreviation ECOTOXICOLOGY
iso source abbreviation Ecotoxicology
publication date MAY
year published 2017
volume 26
issue 4
beginning page 570
ending page 575
digital object identifier (doi) 10.1007/s10646-017-1785-4
page count 6
web of science category Ecology; Environmental Sciences; Toxicology
subject category Environmental Sciences & Ecology; Toxicology
document delivery number EU2IV
unique article identifier WOS:000400853100011
link http://www.readcube.com/articles/10.1007/s10646-017-1785-4?author_access_token=t-nCLD1sKIGEW8PZ7beAlPe4RwlQNchNByi7wbcMAY5__s6oLJcq1iFihHiUDClj4ZpeAIw34Pe3nZLSfl3WNgffUPzjy2rP2nzP4DzvaQPq_ikV1KMi29Y_MKWcPpDiEsPyoh2t-UqDXWpp25jTeA%3D%3D