Cephalopod growth: historical context and future directions

Jackson, George D.

doi:10.1071/mf04075

Cited by 17 publications

(7 citation statements)

References 20 publications

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“…However, this growth phase can be influenced by many factors, such as temperature, food availability and space, which makes body size a poor indicator of an animal's age. 238,[274][275][276] The age of sexual maturity is variable and also appears to depend on the ecological niche of the species. As reviewed by Rocha et al, some cephalopods (e.g.…”

Section: Health and Welfare Of Ageing Cephalopods: A Special Case?mentioning

confidence: 99%

Guidelines for the Care and Welfare of Cephalopods in Research –A consensus based on an initiative by CephRes, FELASA and the Boyd Group

et al. 2015

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This paper is the result of an international initiative and is a first attempt to develop guidelines for the care and welfare of cephalopods (i.e. nautilus, cuttlefish, squid and octopus) following the inclusion of this Class of ∼700 known living invertebrate species in Directive 2010/63/EU. It aims to provide information for investigators, animal care committees, facility managers and animal care staff which will assist in improving both the care given to cephalopods, and the manner in which experimental procedures are carried out. Topics covered include: implications of the Directive for cephalopod research; project application requirements and the authorisation process; the application of the 3Rs principles; the need for harm-benefit assessment and severity classification. Guidelines and species-specific requirements are provided on: i. supply, capture and transport; ii. environmental characteristics and design of facilities (e.g. water quality control, lighting requirements, vibration/noise sensitivity); iii. accommodation and care (including tank design), animal handling, feeding and environmental enrichment; iv. assessment of health and welfare (e.g. monitoring biomarkers, physical and behavioural signs); v. approaches to severity assessment; vi. disease (causes, prevention and treatment); vii. scientific procedures, general anaesthesia and analgesia, methods of humane killing and confirmation of death. Sections covering risk assessment for operators and education and training requirements for carers, researchers and veterinarians are also included. Detailed aspects of care and welfare requirements for the main laboratory species currently used are summarised in Appendices. Knowledge gaps are highlighted to prompt research to enhance the evidence base for future revision of these guidelines.

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Section: Health and Welfare Of Ageing Cephalopods: A Special Case?mentioning

confidence: 99%

Guidelines for the Care and Welfare of Cephalopods in Research –A consensus based on an initiative by CephRes, FELASA and the Boyd Group

et al. 2015

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“…Experimental and modelling work on the influence of temperature on hatching dates, hatching success and paralarval survival and growth provide insights into possible mechanisms (Forsythe, 1993;Jackson, 2004), highlighting sensitivity to water temperature. Recent studies suggests that increased temperature may also have a negative impact on cephalopods due to a progressive transition of routine mantle metabolism to an anaerobic mode of energy production (Portner, 1994;Melzner et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

A review of cephalopod–environment interactions in European Seas

et al. 2008

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Cephalopods are highly sensitive to environmental conditions and changes at a range of spatial and temporal scales. Relationships documented between cephalopod stock dynamics and environmental conditions are of two main types: those concerning the geographic distribution of abundance, for which the mechanism is often unknown, and those relating to biological processes such as egg survival, growth, recruitment and migration, where mechanisms are sometimes known and in a very few cases demonstrated by experimental evidence. Cephalopods seem to respond to environmental variation both 'actively' (e.g. migrating to areas with more favoured environmental conditions for feeding or spawning) and 'passively' (growth and survival vary according to conditions experienced, passive migration with prevailing currents). Environmental effects on early life stages can affect life history characteristics (growth and maturation rates) as well as distribution and

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“…Cortez et al (1999a) and Baltazar et al (2000) found that O. mimus showed a decrease in SGR over time, from values close to 1% to 0.1% in animals between 350-400 g in both genders. This decrease in SGR was reflected in the growth curves that clearly showed a logarithmic phase described by Cortez et al (1999a), Jackson (2004), andSemmens et al (2004), which characterizes the second growth phase in cephalopods. O'Dor and Wells (1978) indicated that somatic growth in female octopuses stops during sexual maturity and egg laying, because the animals undergo important metabolic changes, coinciding with the results of the current study in which the weight increase in males was greater than in females during the egg-laying period.…”

Section: Discussionmentioning

confidence: 96%