Effects of increased tank bottom areas on cuttlefish (<i>Sepia officinalis</i>, L.) reproduction performance

Sykes, António V.; Pereira, Diana; Rodrı́guez, Covadonga; Lorenzo, A.; Andrade, J.P.

doi:10.1111/j.1365-2109.2012.03106.x

Cited by 17 publications

(23 citation statements)

References 23 publications

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“…In females of many, but not all species, reproductive status is accompanied by loss of body weight due to reduced or absent food intake (e.g., Wodinsky, 1977; but see Sykes et al, 2013b), and reduction of food intake may also occur in senescent mature males (Anderson et al, 2002). …”

Section: Body Weight and Deviation From “Normality”mentioning

confidence: 99%

The Digestive Tract of Cephalopods: Toward Non-invasive In vivo Monitoring of Its Physiology

et al. 2017

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Ensuring the health and welfare of animals in research is paramount, and the normal functioning of the digestive tract is essential for both. Here we critically assess non- or minimally-invasive techniques which may be used to assess a cephalopod's digestive tract functionality to inform health monitoring. We focus on: (i) predatory response as an indication of appetitive drive; (ii) body weight assessment and interpretation of deviations (e.g., digestive gland weight loss is disproportionate to body weight loss in starvation); (iii) oro-anal transit time requiring novel, standardized techniques to facilitate comparative studies of species and diets; (iv) defecation frequency and analysis of fecal color (diet dependent) and composition (parasites, biomarkers, and cytology); (v) digestive tract endoscopy, but passage of the esophagus through the brain is a technical challenge; (vi) high resolution ultrasound that offers the possibility of imaging the morphology of the digestive tract (e.g., food distribution, indigestible residues, obstruction) and recording contractile activity; (vii) needle biopsy (with ultrasound guidance) as a technique for investigating digestive gland biochemistry and pathology without the death of the animal. These techniques will inform the development of physiologically based assessments of health and the impact of experimental procedures. Although intended for use in the laboratory they are equally applicable to cephalopods in public display and aquaculture.

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Section: Body Weight and Deviation From “Normality”mentioning

confidence: 99%

The Digestive Tract of Cephalopods: Toward Non-invasive In vivo Monitoring of Its Physiology

et al. 2017

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“…As for the reproduction of cephalopods in captivity, despite researchers being currently able to obtain eggs and that technology has progressed over the past years, these are not meeting the naturally occurring quantity and/or quality in the wild, due to the lack of knowledge on the variables that affect directly or indirectly animals at this adult life stage (Sykes et al. 2012).…”

Section: Production Protocols Aquaculture Technology Related Researcmentioning

confidence: 99%

Directive 2010/63/EU on animal welfare: a review on the existing scientific knowledge and implications in cephalopod aquaculture research

Sykes

Baptista

Gonçalves

et al. 2012

Reviews in Aquaculture

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This review intends to provide a reflection regarding Directive 2010/63/EU, on animal welfare, and its application concerning cephalopod breeding and experimentation in aquaculture research. To do so, we gathered different perspectives of our group members, involving two cephalopod aquaculture researchers, an aquaculture fish production technician and a veterinary professional, the latter with no background on cephalopod research. The inclusion of this class in the animal welfare legislation; the definition of live cephalopods, stress, pain and suffering are revised according to the latest scientific knowledge. Considering the 15 year background that the Centre of Marine Sciences holds on the cultivation of the European cuttlefish, an evaluation of existing production protocols, aquaculture technology related research, ethics and cephalopod welfare are discussed. The application of anaesthesia, analgesia and euthanasia is discussed, bearing in mind the different procedures applied on a daily basis in aquaculture breeding and experimentation and the requirements of the new Directive. Finally, an overview of the above and progress on 3Rs (replacement of animals, reduction in number of animals and refinement of procedures) application to cephalopod welfare is presented.

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“…Despite multiple consecutive generations of S. officinalis having been achieved in captivity (Forsythe et al, 1994;Sykes et al, 2006a), reproduction performance results are inconsistent (in terms of replication) and do not meet the occurring quantity and/or quality observed in the wild (Laptikhovsky et al, 2003;Sykes et al, 2006b). Recently, Sykes et al (2013) have hypothesized that this unpredictability is probably due to insufficient knowledge on the variables that affect directly or indirectly the captive breeding stock. Comparatively, this issue is more important in S. officinalis than with O. vulgaris since the first species displays natural low fecundity and there are reports of the eventual existence of inbreeding after 6 consecutive generations of culture (Sykes et al, 2006a), while the second species can lay up to 500,000 eggs/female in nature (Mangold, 1983) and ≈100,000 eggs/female are obtained in captivity .…”

Section: Introductionmentioning

confidence: 99%

“…However, both knowledge on nutrition and digestive physiology of cuttlefish, and in general of cephalopods, is still currently low (Navarro et al, 2014;Sykes et al, 2017a). Therefore, until now the current management of the cuttlefish breeding stock has included feeding on natural frozen food (Sykes et al, 2006a(Sykes et al, , 2013(Sykes et al, , 2014. It is known that tank size (water volume and/or depth) and bottom areas (Sykes et al, 2013), as well as stocking density (Correia et al, 2005), influence cuttlefish reproduction performance.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, until now the current management of the cuttlefish breeding stock has included feeding on natural frozen food (Sykes et al, 2006a(Sykes et al, , 2013(Sykes et al, , 2014. It is known that tank size (water volume and/or depth) and bottom areas (Sykes et al, 2013), as well as stocking density (Correia et al, 2005), influence cuttlefish reproduction performance. However, cuttlefish behavior and eventual stress in captivity (in both growth and reproduction phases) should not be overlooked when setting up the breeding stocks, as Conte (2004) reported that rearing/housing conditions influence finfish welfare translating into lower female quality and reproduction performance.…”

Section: Introductionmentioning

confidence: 99%

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Control of Zootechnology Leads to Improved Cuttlefish (Sepia officinalis, L.) Reproduction Performance up to Pre-industrial Levels

et al. 2020

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Effects of increased tank bottom areas on cuttlefish (Sepia officinalis, L.) reproduction performance

Cited by 17 publications

References 23 publications

The Digestive Tract of Cephalopods: Toward Non-invasive In vivo Monitoring of Its Physiology

The Digestive Tract of Cephalopods: Toward Non-invasive In vivo Monitoring of Its Physiology

Directive 2010/63/EU on animal welfare: a review on the existing scientific knowledge and implications in cephalopod aquaculture research

Control of Zootechnology Leads to Improved Cuttlefish (Sepia officinalis, L.) Reproduction Performance up to Pre-industrial Levels

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