Welfare and Deformities in Fish

Branson, E. J.; Turnbull, T.

doi:10.1002/9780470697610.ch13

Cited by 50 publications

(68 citation statements)

References 38 publications

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“…egg incubation temperature), nutritional deficiencies (e.g. phosphorus) and poor handling (Branson and Turnbull 2008). Although attributed to ''egg quality'', differences in mortality rates between batches of marine The classification and listing is likely be refined with further directed research; causes could be further classified in terms of predictability and preventability, depending on site Fish Physiol Biochem (2012) 38: 189-199 191 larvae are thought to be due largely to the status of the broodstock (nutrition, stress) rather than inherent genetic deficiencies (e.g.…”

Section: Why Do Farmed Fish Die?mentioning

confidence: 99%

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Mortality and fish welfare

Ellis

Berrill

Lines

et al. 2011

Fish Physiol Biochem

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Mortality has received insufficient attention as a fish welfare topic. Here, we aim to prompt fish farming stakeholders to discuss fish mortalities in relation to welfare. Mortality in farmed fish populations is due to a variety of biotic and abiotic causes, although it is often difficult to differentiate between underlying and immediate causes of mortality. Most mortality appears to occur during episodes associated with disease outbreaks and critical periods (in development or production). Most causes of mortality can be assumed to be associated with suffering prior to death. As mortality rates in farmed fish populations are suspected to rank amongst the highest in commonly farmed vertebrate species, mortality should be a principal fish welfare issue. Long-term mortality rates can be used as a retrospective welfare performance indicator and short-term mortality rates as an operational welfare indicator. Scrutiny of mortality records and determining causes of death will enable action to be taken to avoid further preventable mortality. The welfare performance of fish farms should only be judged on levels of predictable and preventable mortality. Fish farmers will already be monitoring mortality due to commercial and legal requirements. As profitability in fish farming is directly linked to survival, confronting mortality should ultimately benefit both fish and farmers.

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Section: Why Do Farmed Fish Die?mentioning

confidence: 99%

“…For example, mortality is conspicuous by its absence as a stand-alone topic in Branson's (2008) book entitled ''Fish Welfare'', although it is mentioned under other topics (e.g. Branson and Turnbull 2008;Wall 2008).…”

mentioning

confidence: 98%

Mortality and fish welfare

Ellis

Berrill

Lines

et al. 2011

Fish Physiol Biochem

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“…Two mouth deformities previously highlighted as serious welfare issues for this species are LJD and pugheadedness (or brachygnathia; Sadler et al 2001;Branson and Turnbull 2008). LJD is characterised by downward curvature of the lower jaw and ankylosis of mandibular articulation which results in the jaw being locked in a permanently open position (Bruno 1990).…”

Section: Types Of Mouth Damagementioning

confidence: 99%

Injuries and deformities in fish: their potential impacts upon aquacultural production and welfare

Noble

Cañon–Jones

Damsgård

et al. 2011

Fish Physiol Biochem

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Fish can be the recipients of numerous injuries that are potentially deleterious to aquacultural production performance and welfare. This review will employ a systematic approach that classifies injuries in relation to specific anatomical areas of the fish and will evaluate the effects of injury upon production and welfare. The selected areas include the (1) mouth, (2) eye, (3) epidermis and (4) fins. These areas cover a large number of external anatomical features that can be injured during aquacultural procedures and husbandry practices. In particular, these injuries can be diagnosed on live fish, in a farm environment. For each anatomical feature, this review addresses (a) its structure and function and (b) defines key injuries that can affect the fish from a production and a welfare perspective. Particular attention is then given to (c) defining known and potential aquacultural risk factors before (d) identifying and outlining potential short- and long-term farming practices and mitigation strategies to reduce the incidence and prevalence of these injuries. The review then concludes with an analysis of potential synergies between risk factors the type of injury, in addition to identifying potential synergies in mitigation strategies. The paper covers both aquaculture and capture-based aquaculture.

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“…Pugheadness is infrequently observed in the wild, particularly in large estuarine systems (Catelani et al, 2017), but higher incidences of this case were revealed from more polluted waters (Slooff, 1982). Fish specimens with this type of anomaly can have their mouth partially closed (Jawad and Hosie, 2007;Branson and Turnbull, 2008), which can affect the feeding procedure and hindered growth rate (Shariff et al, 1986). (Figure 1).…”

Section: Introductionmentioning

confidence: 95%

Occurence of Scoliosis, Pugheadness and Disappearance of Pelvic Fin in Three Marine Fish Species from Turkey

Jawad¹,

CELiK²,

ATES³

2017

ijms

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Skeletal deformities such as scoliosis, pugheadness and complete absence of pelvic fins have been described in three specimens of Mugil cephalus Linnaeus, 1758, Nemipterus randalli Russell, 1986 and Sparus aurata (Linnaeus, 1758). The cases of scoliosis were with 4 lateral bends, pugheadness with a significant absence of bones from the preorbital region of the fish skull and the complete absence of pelvic fins accompanied with absence of pelvic girdle.

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Welfare and Deformities in Fish

Cited by 50 publications

References 38 publications

Mortality and fish welfare

Mortality and fish welfare

Injuries and deformities in fish: their potential impacts upon aquacultural production and welfare

Occurence of Scoliosis, Pugheadness and Disappearance of Pelvic Fin in Three Marine Fish Species from Turkey

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