Keyword search (3,619 papers available)


Early-life and parental predation risk shape fear acquisition in adult minnows.

Author(s): Crane AL, Meuthen D, Thapa H, Ferrari MCO, Brown GE

Exposure to predation risk can induce a fearful baseline state, as well as fear reactions toward novel situations (i.e., neophobia). Some research indicates that risk exposure during sensitive periods makes adults more prone to acquiring long-term fearful p...

Article GUID: 33125574
The propensity for re-triggered predation fear in a prey fish.

Author(s): Crane AL, Feyten LEA, Ramnarine IW, Brown GE

Sci Rep. 2020 Jun 09;10(1):9253 Authors: Crane AL, Feyten LEA, Ramnarine IW, Brown GE

Article GUID: 32518253
High-risk environments promote chemical disturbance signalling among socially familiar Trinidadian guppies.

Author(s): Crane AL, Feyten LEA, Ramnarine IW, Brown GE

Oecologia. 2020 Apr 15;: Authors: Crane AL, Feyten LEA, Ramnarine IW, Brown GE

Article GUID: 32296954
Effects of chronic exposure to selenomethionine on social learning outcomes in zebrafish (Danio rerio): serotonergic dysregulation and oxidative stress in the brain.

Author(s): Attaran A, Salahinejad A, Naderi M, Crane AL, Niyogi S, Chivers DP

Chemosphere. 2020 Jan 11;247:125898 Authors: Attaran A, Salahinejad A, Naderi M, Crane AL, Niyogi S, Chivers DP

Article GUID: 31972490
An ecological framework of neophobia: from cells to organisms to populations.

Author(s): Crane AL, Brown GE, Chivers DP, Ferrari MCO

Biol Rev Camb Philos Soc. 2019 Oct 10;: Authors: Crane AL, Brown GE, Chivers DP, Ferrari MCO

Article GUID: 31599483
Chronic exposure to dietary selenomethionine dysregulates the genes involved in serotonergic neurotransmission and alters social and antipredator behaviours in zebrafish (Danio rerio).

Author(s): Attaran A, Salahinejad A, Crane AL, Niyogi S, Chivers DP

Environ Pollut. 2019 Mar;246:837-844 Authors: Attaran A, Salahinejad A, Crane AL, Niyogi S, Chivers DP

Article GUID: 30623840
Time-dependent latent inhibition of predator-recognition learning.

Author(s): Crane AL, Chivers DP, Ferrari MCO

Biol Lett. 2019 May 31;15(5):20190183 Authors: Crane AL, Chivers DP, Ferrari MCO

Article GUID: 31064311
Title:Chronic exposure to dietary selenomethionine dysregulates the genes involved in serotonergic neurotransmission and alters social and antipredator behaviours in zebrafish (Danio rerio).
Authors:Attaran A,  Salahinejad A,  Crane AL,  Niyogi S,  Chivers DP
Link:https://www.ncbi.nlm.nih.gov/pubmed/30623840?dopt=Abstract
DOI:10.1016/j.envpol.2018.12.090
Category:Environ Pollut
PMID:30623840
Dept Affiliation: BIOLOGY
1 Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, Saskatchewan, S7N 5E2, Canada. Electronic address: Anoosha.attaran@usask.ca.
2 Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, Saskatchewan, S7N 5E2, Canada.
3 Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, Saskatchewan, S7N 5E2, Canada; Department of Biology, Concordia University, Montreal, Quebec, H4B 1R6, Canada.
4 Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, Saskatchewan, S7N 5E2, Canada; Toxicology Centre, University of Saskatchewan, 44 Campus Drive, Saskatoon, Saskatchewan, S7N 5B3, Canada.

Description:

Chronic exposure to dietary selenomethionine dysregulates the genes involved in serotonergic neurotransmission and alters social and antipredator behaviours in zebrafish (Danio rerio).

Environ Pollut. 2019 Mar;246:837-844

Authors: Attaran A, Salahinejad A, Crane AL, Niyogi S, Chivers DP

Abstract

Selenium (Se) is a metalloid of potential interest from both a toxicological and nutritional perspective, having a range of safe intake. The adverse neuro-behavioural effects of Se have been investigated in both humans and fishes, but little is known about its effects on social behaviours or the serotonergic signaling pathway in the brain. In the present study, we investigated the effects of chorionic dietary exposure to Se (as selenomethionine) at different concentrations (control, 2.1, 11.6 or 31.5?µg/g dry wt.) on antipredator avoidance, shoaling behaviour, and social group preferences in adult zebrafish (Danio rerio). In addition, we also measured the expression of important genes in the serotonergic pathway that influence social behaviours. After 60 days of exposure, the highest dose (31.5?µg/g dry wt.) caused the highest level of baseline fear behaviour, with fish swimming lower in the water column and in tighter shoals compared to fish in the other treatments. With high levels of baseline fear, these fish did not significantly intensify fear behaviours in response to predation risk in the form of exposure to chemical alarm cues. When individual fish were given an opportunity to shoal with groups of differing sizes (3 vs. 4 individuals), fish exposed to the high dose spent less time with groups in general, and only control fish showed a significant preference for the larger group. In the zebrafish brain, we found significant upregulation in the mRNA expression of serotonin receptors (htr1aa and htr1b), a transporter (slc6a4a), and tryptophan hydroxylase-2 (tph2), whereas there was a downregulation of the monoamine oxidase (mao) gene. The results of this study suggest that disruption of serotonergic neurotransmission might have been responsible for Se-induced impairment of antipredator and social behaviour in zebrafish.

PMID: 30623840 [PubMed - indexed for MEDLINE]