Discovery of a specialised anatomical structure in some physoclistous carangid fishes which permits rapid ascent without barotrauma

Hughes, Julian M.; Rowland, Andrew J.; Stewart, John; Gill, Howard S.

doi:10.1007/s00227-016-2943-6

Cited by 10 publications

(8 citation statements)

References 26 publications

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“…Although neither of these issues could be addressed in the current study, P . georgianus are not susceptible to barotrauma 57 , so likely survived releases that were completed within a timely manner. Also, while poor handling and tagging procedures may reduce the recapture rate, these issues are not expected to result in biased estimates of movement distance.…”

Section: Discussionmentioning

confidence: 99%

Patterns and drivers of movement for a coastal benthopelagic fish, Pseudocaranx georgianus, on Australia’s southeast coast

Fowler

Chick

Stewart

2018

Sci Rep

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Knowledge of connectivity and population structure is integral to the sustainable management of fished populations, yet such information is unavailable for many species over scales relevant to their exploitation. We examined broad-scale patterns and drivers of adult movement for a putatively mobile carangid (Pseudocaranx georgianus) on Australia’s southeast coast using an angler tag-recapture dataset. More than 6300 individuals were tagged and released across 1007 km of coastline, with anglers recapturing 157 (2.48%) individuals during a 14-year period. Median distance moved was 5 km and a substantial proportion of individuals (19%) were recaptured at their release location. Recapture latitude was also strongly predicted by release latitude (r2 = 0.87). However, a broad range of movements were observed (0–508 km), with 6% of individuals moving further than 100 km. Most individuals recaptured in areas now designated as Marine Protected Areas (MPAs) were originally released in the same area (79.2%). Larger body size, longer periods at liberty, and releases during Spring all positively influenced distance moved. Results support restricted movement over an intermediate scale, punctuated by occasional large movements. Our findings suggest adult movement of P. georgianus in southeastern Australia primarily occurs over smaller distances than the current spatial scale of management.

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Section: Discussionmentioning

confidence: 99%

Patterns and drivers of movement for a coastal benthopelagic fish, Pseudocaranx georgianus, on Australia’s southeast coast

Fowler

Chick

Stewart

2018

Sci Rep

Self Cite

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“…Consequently, this group of fishes have restricted free vertical ranges (FVR) and in the wild ascend slowly to avoid injury or becoming too buoyant 63,64 . To partially counteract this shortcoming, some physoclistous fish such as samson fish ( Seriola hippos ) and silver trevally ( Pseudocaranx georgianus ) have evolved the ability to release excess air from expanding swim bladders during ascent through a specialised vent near the back of the mouth 56 . However, most cultured physoclists, such as Atlantic cod, sea bass, red porgy, amberjack and haddock, have not evolved this unique anatomical structure.…”

Section: The Biological Outcomes Considerations and Challenges Of Submerged Fish Farmingmentioning

confidence: 99%

“…Like physostomous fish, physoclistous fish also fill their swim bladder by swallowing air, but only when larvae. 56,57 During development, the connection between the swim bladder and gut disappears, resulting in a closed swim bladder disconnected from the external environment (Figure 3). 41,56 Instead of swallowing air, gas is secreted into and resorbed from the swim bladder by diffusion with the bloodstream.…”

Section: Swim Bladder and Buoyancymentioning

confidence: 99%

Submerged cage aquaculture of marine fish: A review of the biological challenges and opportunities

Sievers

Korsøen

Warren‐Myers

et al. 2021

Reviews in Aquaculture

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Surface‐based cages are the dominant production technology for the marine finfish aquaculture industry. However, issues such as extreme weather events, poor environmental conditions, interactions with parasites, and conflicts with other coastal users are problematic for surface‐based aquaculture. Submerged cages may reduce many of these problems and commercial interest in their use has increased. However, a broad synthesis of research into the effects of submerged culture on fish is lacking. Here, we review the current status of submerged fish farming worldwide, outline the biological challenges that fish with fundamentally different buoyancy control physiologies face in submerged culture, and discuss production benefits and problems that might arise from submerged fish farming. Our findings suggest that fish with closed swim bladders, and fish without swim bladders, may be well‐suited to submerged culture. However, for fish with open swim bladders, such as salmonids, submergence is more complex as they require access to surface air to refill their swim bladders and maintain buoyancy. Growth and welfare of open swim bladder fish can be compromised by submergence for long periods due to complications with buoyancy regulation, but the recent addition of underwater air domes to submerged cages can alleviate this issue. Despite this advance, a greater understanding of how to couple advantageous environmental conditions with submerged culture to improve fish growth and welfare over the commercial production cycle is required if submerged cages are to become a viable alternative to surface‐based cage aquaculture.

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“…The pneumatic duct favours the entrance of gas to the swim bladder by swallowing air at the surface and passing it down the gut (Bone & Moore, ; Bruno et al, ). In contrast, in physoclists (e.g., Carangidae), the connection between the swim bladder and the digestive tract ceases to exist during the embryonic development and the filling and emptying mechanisms of the swim bladder are done by diffusion with the bloodstream (Bruno et al, ; Genten et al, ; Hughes, Rowland, Stewart, & Gill, ).…”

mentioning

confidence: 99%

“…However, we cannot further hypothesize on this portal of entry, as dorsal aorta was not sampled in the present case. Recently, it was reported that, in some species of Carangidae (e.g., S. dumerili , S. lalandi) , the swim bladder may not be completely sealed (Hughes et al, ). Hughes et al () detailed a specialized anatomical structure, consisting of a membranous opening, dorsal in the swim bladder, which led to a flattened tube that bifurcated around the vertebral columns and exited via a small hole in the pharyngocleithral membrane underneath each operculum.…”

mentioning

confidence: 99%

First description of spontaneous granulomatous aerocystitis by Phoma herbarum in a wild greater amberjack (Seriola dumerili Risso, 1810)

Sales‐Ribeiro

Sanchez‐Henao

García‐Álvarez

et al. 2019

Journal of Fish Diseases

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Discovery of a specialised anatomical structure in some physoclistous carangid fishes which permits rapid ascent without barotrauma

Cited by 10 publications

References 26 publications

Patterns and drivers of movement for a coastal benthopelagic fish, Pseudocaranx georgianus, on Australia’s southeast coast

Patterns and drivers of movement for a coastal benthopelagic fish, Pseudocaranx georgianus, on Australia’s southeast coast

Submerged cage aquaculture of marine fish: A review of the biological challenges and opportunities

First description of spontaneous granulomatous aerocystitis by Phoma herbarum in a wild greater amberjack (Seriola dumerili Risso, 1810)

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