Lack of evidence for a role of olfaction on first maturation in farmed sea bass Dicentrarchus labrax

Saraiva, João L.; Martins, Rute; Hubbard, Peter C.; Canário, Adelino V. M.

doi:10.1016/j.ygcen.2015.02.017

Cited by 6 publications

(4 citation statements)

References 43 publications

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“…For example, increased ventilation rate, decreased foraging and swimming activity, increased dashing and dorsal fin erection 176 or even morphological changes 179 are within the effects of exposing fish to chemical cues. These effects should not be taken lightly as many of the most farmed fish species have been characterised in terms of chemical sensing, such as salmonids, 180,181 tilapias, 182‐184 carps, 185 European seabass, 186 gilthead seabream 187 or Senegalese sole 188 …”

Section: Environmental Enrichment Strategiesmentioning

confidence: 99%

“…177,178 For example, increased ventilation rate, decreased foraging and swimming activity, increased dashing and dorsal fin erection 176 or even morphological changes 179 are within the effects of exposing fish to chemical cues. These effects should not be taken lightly as many of the most farmed fish species have been characterised in terms of chemical sensing, such as salmonids, 180,181 tilapias, [182][183][184] carps, 185 European seabass, 186 gilthead seabream 187 or Senegalese sole. 188 In this context, manipulation of odours or other chemical stimulations, whether in the form of olfactory stimuli that are specific or non-specific to an animal's natural habitat, or pheromonal in nature, have been proposed as potential EE for both land animals and captive fish.…”

Section: Chemical Stimuli: Olfaction Taste and Chemosensingmentioning

confidence: 99%

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Environmental enrichment in fish aquaculture: A review of fundamental and practical aspects

Arechavala-López

Cabrera-Álvarez

Maia

et al. 2021

Reviews in Aquaculture

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Environmental enrichment (EE) can improve the welfare of captive fish. Its objective is to provide new sensorial and motor stimulation in order to help meet their behavioural, physiological, morphological and psychological needs, whilst reducing stress and frequency of abnormal behaviours. In fish farms, rearing environments are usually designed from a human perspective and based on economic requirements, mainly for practical reasons for the farmer, with little consideration for animal welfare. Throughout aquaculture production cycles, many farming operations can be stressful for fish, and EE may not only help them cope with these stressful events but also improve their overall welfare. In recent years, increasing interest on the effects of EE in captive fish has focussed mainly on structural enrichment. However, there are many other enrichment strategies that merit attention (e.g. sensorial, occupational, social and dietary enrichment) and which may be of interest for fish farming. Here, we review in depth the existing literature on EE and its effects on the welfare of a wide range of farmed fish species, discussing the feasibility and potential applications of different EE strategies to promote fish welfare at a commercial scale. We also present a practical framework to address the design, validation and implementation of EE by the aquaculture industry, taking in consideration the technical challenges of providing enrichment for farmed fish.

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Section: Environmental Enrichment Strategiesmentioning

confidence: 99%

Section: Chemical Stimuli: Olfaction Taste and Chemosensingmentioning

confidence: 99%

Environmental enrichment in fish aquaculture: A review of fundamental and practical aspects

Arechavala-López

Cabrera-Álvarez

Maia

et al. 2021

Reviews in Aquaculture

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“…Animals frequently communicate chemically, and olfaction is a potent means of receiving social and environmental information. Olfactory stimuli have been shown to affect physiological functions in fish, including reproduction [14]. Anosmia seems to modify gene expression of key reproduction-related genetic factors, it seems to be insufficient to stop or delay growth or gonadal development and maturation [14].…”

Section: Discussionmentioning

confidence: 99%

“…Olfactory stimuli have been shown to affect physiological functions in fish, including reproduction [14]. Anosmia seems to modify gene expression of key reproduction-related genetic factors, it seems to be insufficient to stop or delay growth or gonadal development and maturation [14]. Because the olfactory adenylyl cyclase III is expressed in rat germ cells during spermiogenesis, the olfactory signal transduction pathway is also utilized during gamete formation [15].…”

Section: Discussionmentioning

confidence: 99%

From Nose to Lumbar Spinal Cord – Reduced Sperm Numbers Occur by Olfactory Bulbectomy-Related Onuf’s Nucleus Degeneration: New Experimental Evidence for Kallmann Syndrome

Yolaş¹,

Kanat²,

Zeynal³

et al. 2023

Neuroendocrinology

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Introduction: Olfaction and its relation to human health is an area of growing interest. Although olfaction disorders have been considered a part of Kallmann Syndrome, the role of olfactory dysfunction on spermatogenesis has not been studied yet. We studied if olfactory bulbectomy causes dysfunction in spermatogenesis as a result of Onuf’s nucleus damage. Methods: Twenty-eight male rats were divided into three groups: six as the control (G-1; n=6), six as the only frontal burr-hole applied animals SHAM (G-1I; n=6), and 16 as the study group (G-III; n=16) in which OBX was performed. The animals were followed for two months. After the decapitation of the animals, olfactory bulb (OB) volumes (mm3), the neuron density of the Onuf nucleus (n/mm3), and sperm density (n/mm3) were estimated stereologically, and analyzed. Results: Olfactory bulb volumes (mm3), degenerated neuron density of Onuf's nucleus (n/mm3), and sperm numbers of control, SHAM, and study groups were estimated as: 4±0.5; 6±2 and 103.245±10.841 in G-I; 3.5±0.7; 14±4 and 96.891±9.569 in G-II and 1.3±0.3; 91±17 and 73.561±6.324 in GIII. The statistical results of degenerated neuron density of Onuf's nucleus and sperm numbers between groups are as p<0.005 for GI/GII; p<0.0005 for GII/GIII and p<0.00001 for G-I/G-III. Discussion/Conclusion: This study first time indicates that Onuf's nucleus degeneration secondary to OBX seems to be responsible for reduced sperm numbers.

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Aquatic Olfaction

Korsching

2016

Chemosensory Transduction

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Lack of evidence for a role of olfaction on first maturation in farmed sea bass Dicentrarchus labrax

Cited by 6 publications

References 43 publications

Environmental enrichment in fish aquaculture: A review of fundamental and practical aspects

Environmental enrichment in fish aquaculture: A review of fundamental and practical aspects

From Nose to Lumbar Spinal Cord – Reduced Sperm Numbers Occur by Olfactory Bulbectomy-Related Onuf’s Nucleus Degeneration: New Experimental Evidence for Kallmann Syndrome

Aquatic Olfaction

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