Estimating predation rates of restocked individuals: The influence of timing-of-release on metapenaeid survival

Poh, B.; Tweedley, J.R.; Chaplin, Jennifer A.; Trayler, K.M.; Loneragan, N.R.

doi:10.1016/j.fishres.2017.09.019

Cited by 11 publications

(6 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The phenomenon of high, immediate post‐release mortality has been observed in many ABE programmes, and the scale of mortality can be very significant (Bell et al., ). For example, during the release of cultured post‐larval western school prawn, Metapenaeus dalli , Racek, in Western Australia, up to ~300 post‐larvae were identified in the stomach of a single small fish (western gobblegut, Ostorhinchus rueppellii [Günther]), indicating that a concentrated food source can lead to intense feeding (Poh et al., ).…”

Section: Discussionmentioning

confidence: 99%

“…Programmes to enhance coastal abalone fisheries are not always successful and habitat enhancement structures have had somewhat limited success (Davis, 1995;James, Day & Shepherd, 2007). This is due to ecological constraints on these interventions including strong density-dependent processes in the larval phase (Hart, Strain, Fabris, Brown & Davidson, 2013;Shepherd, Preece & White, 2001) and poor behavioural responses among released cultured juveniles (Poh, Tweedley, Chaplin, Trayler & Loneragan, 2018;Tegner & Butler, 1985). Newly released juveniles can have poor behavioural responses towards predators since culture conditions lack the stimuli and environmental cues required to develop instinctive survival patterns that are essential for survival in the wild (Bell, 1999;Bell et al, 2005;Daniels & Watanabe, 2010;Poh et al, 2018).…”

mentioning

confidence: 99%

“…This is due to ecological constraints on these interventions including strong density-dependent processes in the larval phase (Hart, Strain, Fabris, Brown & Davidson, 2013;Shepherd, Preece & White, 2001) and poor behavioural responses among released cultured juveniles (Poh, Tweedley, Chaplin, Trayler & Loneragan, 2018;Tegner & Butler, 1985). Newly released juveniles can have poor behavioural responses towards predators since culture conditions lack the stimuli and environmental cues required to develop instinctive survival patterns that are essential for survival in the wild (Bell, 1999;Bell et al, 2005;Daniels & Watanabe, 2010;Poh et al, 2018). High mortality of transplanted or cultured juveniles presents a significant challenge and has the potential to impede the economic viability of ABE projects (Hart et al, 2013;McCormick, Herbinson, Mill & Altick, 1994;Waal et al, 2013).…”

mentioning

confidence: 99%

See 2 more Smart Citations

Octopus as predators of abalone on a sea ranch

Greenwell

Loneragan

Admiraal

et al. 2019

Fisheries Management Eco

Self Cite

View full text Add to dashboard Cite

This study examined the occurrence of octopus across an abalone, Haliotis laevigata, Donovan, sea ranch in south‐western Australia, to understand how octopus may be impacting abalone production. Commercial divers removed 654 octopus and 17,666 empty abalone shells during regular, 2 to 4‐weekly surveys over 27 months. A negative binomial generalised linear model estimated a 78% increase in empty shells per artificial abalone habitat per day, when octopuses were present, after adjusting for location and season. Of the 408 shells examined for evidence of predation, 19% had a small, slightly ovoid hole consistent with those made by octopus. The mean (± 1 SE) length of shells with boreholes (70.3 ± 2.2 mm) was significantly longer than those without (59.8 ± 0.5 mm), and boreholes were concentrated over the adductor, respiratory organs and heart. This study provides important insights into the adaptable feeding regimes of octopus and their potential to impose strong top‐down controls on sea ranching operations.

show abstract

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Octopus as predators of abalone on a sea ranch

Greenwell

Loneragan

Admiraal

et al. 2019

Fisheries Management Eco

Self Cite

View full text Add to dashboard Cite

show abstract

“…Thus, some may have recruited into the Vasse-Wonnerup. As this species has a similar spatial distribution within an estuary as A. butcheri and consumes the same types of prey [84,85], individuals may have taken advantage of reduced competition following the mass mortality of A. butcheri. The same may also be true for the confamilal R. sarba.…”

Section: Temporal Differencesmentioning

confidence: 99%

Spatial and Temporal Changes in the Fish Fauna of a Low-Inflow Estuary following a Mass Mortality Event and Natural and Artificial Bar Breaches

Tweedley,

Beatty,

Cottingham

et al. 2024

Coasts

Self Cite

View full text Add to dashboard Cite

Estuaries that become closed from the ocean through the formation of a sand bar are particularly susceptible to degradation and often experience poor water quality and fish kills. Sampling was conducted seasonally for two years in the deeper waters of the Vasse–Wonnerup (southwestern Australia) after a large fish mortality event to identify the fish species present and determine if richness, abundance, diversity and faunal composition differed among regions and over time. Species richness, abundance and diversity were far greater in the downstream regions than in the upstream regions, reflecting patterns in salinity. Catch rates of two marine estuarine-opportunist mugilids (Mugil cephalus and Aldrichetta forsteri) and an estuarine-resident sparid (Acanthopagrus butcheri), which were the species most affected by the mortality event, were relatively stable. It is suggested that before sampling commenced, mugilids had entered the estuary following an artificial sand bar breach, while the loss of 0+ (new recruits) A. butcheri in the mortality event and subsequent recruitment failure prevented stocks from increasing. Temporal shifts in fish composition were driven by less abundant species, which utilized the estuary more opportunistically. Increases in the occurrences and abundances of these species coincided with an open bar and salinities close to those of seawater. The data also show how the estuary responds to differing hydrodynamic phases and artificial breaches.

show abstract

“…The Postrelease Survival Time Course.-A general postrelease mortality pattern starts with a conspicuously high mortality rate, followed by a period where mortality rate decreases until the mortality rate is stabilized at a relatively low level (e.g., Stoner and Davis 1994, Furuta et al 1998, Bettinger and Bettoli 2002, Shimizu et al 2008, Sudo et al 2008, Lebata-Ramos et al 2013, Melnychuk et al 2014, Long et al 2018, Poh et al 2018. Time course studies estimating postrelease mortality rate over time could provide important information about whether prerelease training programs work.…”

Section: Postrelease Performance Issuesmentioning

confidence: 99%

Reared to become wild-like: addressing behavioral and cognitive deficits in cultured aquatic animals destined for stocking into natural environments—a critical review

Näslund

2021

bms

View full text Add to dashboard Cite

Hatchery-reared aquatic animals tend to perform worse in natural environments than wild conspecifics. This was pointed out over a century ago and while there are many possible causes, one persistent observation is that unnatural rearing environments cause behavioral expressions unsuitable for a life in the wild. Behavioral traits being adaptive in barren, food-rich, and predator-free hatchery tanks likely differ from those being adaptive in nature. More recently, suspicions of cognitive deficiencies due to sensory deprivation have also been raised. Over the last few decades, substantial research has been devoted to produce more wild-like phenotypes in animals reared for stocking. This research includes life-skills training programs, where animals learn to cope with important features of the natural environment (e.g., live food and predation risk), and environmental modifications aimed at stimulating the formation of adequate cognitive and behavioral traits (e.g., environmental enrichment and reduction of the number of individuals per tank). The main purpose of this paper is to provide a summary of the current state-of-knowledge of interventions aimed at ameliorating cognitive and behavioral deficiencies in aquatic animals reared for stocking. Furthermore, it aims to provide a foundation to assist in the development of future questions, hypotheses, and experiments to eventually improve the postrelease performance of these animals.

show abstract

Estimating predation rates of restocked individuals: The influence of timing-of-release on metapenaeid survival

Cited by 11 publications

References 72 publications

Octopus as predators of abalone on a sea ranch

Octopus as predators of abalone on a sea ranch

Spatial and Temporal Changes in the Fish Fauna of a Low-Inflow Estuary following a Mass Mortality Event and Natural and Artificial Bar Breaches

Reared to become wild-like: addressing behavioral and cognitive deficits in cultured aquatic animals destined for stocking into natural environments—a critical review

Contact Info

Product

Resources

About