Neuroendocrine changes upon exposure to predator odors

Hegab, Ibrahim M.; Wei, Wanhong

doi:10.1016/j.physbeh.2014.04.041

Cited by 21 publications

(17 citation statements)

References 75 publications

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“…There is an abundance of information on the structure and function of the olfactory system (Derby and Sorensen, 2008;Dowling, 2013;Firestein, 2001;Hamdani and Døving, 2003;Li, 2014) and the neuroendocrine system of aquatic organisms (Dennis et al, 2014;Døving and Lastein, 2009;Dufty et al, 2002). In addition, much is known about the way predator odours are processed in terrestrial animals (Hegab and Wei, 2014;Li, 2014). Consequently, a thorough understanding of how predator odours and diet cues are detected and processed by aquatic species could be readily obtained in the near future.…”

Section: Discussionmentioning

confidence: 99%

“…The physiological processes that control responses to general olfactory cues have been well studied across multiple systems and taxa (Bell, 2009;Dennis et al, 2014;Døving and Lastein, 2009;Firestein, 2001;Hegab and Wei, 2014). However, for responses to cues related to predation, much of the work is limited to a few terrestrial organisms, such as the responses of rats to predatory cat urine (Hegab and Wei, 2014).…”

Section: Mechanisms Underlying Prey Responses To Predator Odours and mentioning

confidence: 99%

“…However, for responses to cues related to predation, much of the work is limited to a few terrestrial organisms, such as the responses of rats to predatory cat urine (Hegab and Wei, 2014). The response cascade initiated by exposure to predator odours and diet cues generally involves the detection of cues, which initiates neuronal and endocrine signalling, changes in gene expression and synaptic sensitisation, and, ultimately, changes in phenotypes associated with antipredator defences (Fig.…”

Section: Mechanisms Underlying Prey Responses To Predator Odours and mentioning

confidence: 99%

“…In crustaceans, the antennular chemosensory pathway, consisting of the aesthetasc sensilla and Within each box are general topics that should prove fruitful in furthering our understanding of the proximate mechanisms controlling antipredator responses in aquatic prey. These topics are based on the findings discussed in the main text and also on papers looking at mechanistic responses to different predation cues, developmental pathways and neurobiology (Denver, 2009;Derby and Sorensen, 2008;Firestein, 2001;Hamdani and Døving, 2003;Hegab and Wei, 2014;Li, 2014). HPA/I axis, hypothalamic-pituitary-adrenal/interrenal axis; HPT axis, hypothalamic-pituitary-thyroid axis.…”

Section: Odour Detection and Neurosignalling Pathwaysmentioning

confidence: 99%

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Mechanisms underlying the control of responses to predator odours in aquatic prey

Mitchell

Bairos‐Novak

Ferrari

2017

Journal of Experimental Biology

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In aquatic systems, chemical cues are a major source of information through which animals are able to assess the current state of their environment to gain information about local predation risk. Prey use chemicals released by predators (including cues from a predator's diet) and other prey (such as alarm cues and disturbance cues) to mediate a range of behavioural, morphological and life-history antipredator defences. Despite the wealth of knowledge on the ecology of antipredator defences, we know surprisingly little about the physiological mechanisms that control the expression of these defensive traits. Here, we summarise the current literature on the mechanisms known to specifically mediate responses to predator odours, including dietary cues. Interestingly, these studies suggest that independent pathways may control predator-specific responses, highlighting the need for greater focus on predator-derived cues when looking at the mechanistic control of responses. Thus, we urge researchers to tease apart the effects of predator-specific cues (i.e. chemicals representing a predator's identity) from those of dietmediated cues (i.e. chemicals released from a predator's diet), which are known to mediate different ecological endpoints. Finally, we suggest some key areas of research that would greatly benefit from a more mechanistic approach.

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Section: Discussionmentioning

confidence: 99%

Section: Mechanisms Underlying Prey Responses To Predator Odours and mentioning

confidence: 99%

Section: Mechanisms Underlying Prey Responses To Predator Odours and mentioning

confidence: 99%

Section: Odour Detection and Neurosignalling Pathwaysmentioning

confidence: 99%

See 2 more Smart Citations

Mechanisms underlying the control of responses to predator odours in aquatic prey

Mitchell

Bairos‐Novak

Ferrari

2017

Journal of Experimental Biology

View full text Add to dashboard Cite

show abstract

“…In this context, a number of studies demonstrated a widespread DOIinduced induction of c-fos in several cortical brain regions (Tischmeyer & Grimm, 1999;Hegab & Wei, 2014) which appeared to depend upon a 5-HT 2A receptor-mediated release of glutamate (Scruggs et al, 2000;Scruggs et al, 2003).…”

Section: Immunohistochemistrymentioning

confidence: 99%