Reduction of a Larval Herring Population by Jellyfish Predator

Möller, H.

doi:10.1126/science.224.4649.621

Cited by 188 publications

(93 citation statements)

References 3 publications

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“…However, understanding of the ecological role of gelatinous zooplankton in Namibian waters is limited at present. For example, the impact of the group on fish recruitment (particularly as a result of predation on eggs and larvae) could be considerable (Möller 1984.…”

Section: What Is the Potential Strength Of Competitive Interactions Bmentioning

confidence: 99%

Ecosystem approach to fisheries management in the northern Benguela: the Namibian experience

Roux¹,

Shannon²

2004

African Journal of Marine Science

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Section: What Is the Potential Strength Of Competitive Interactions Bmentioning

confidence: 99%

Ecosystem approach to fisheries management in the northern Benguela: the Namibian experience

Roux¹,

Shannon²

2004

African Journal of Marine Science

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“…Moon jellyfish are considered to be important predators of fish larvae as well as other invertebrate plankton (Bailey & Batty 1984, Sullivan et al 1994. Möller (1984) observed 68 Atlantic herring Clupea harengus (Linnaeus 1758) larvae were eaten by a single moon jellyfish (42 mm in bell diameter: BD) in Kiel Fjord. Recent laboratory experiments reported that more than 110 red sea bream Pagrus major (Temminck et Schlegel 1844) larvae were preyed on by a moon jellyfish (66-80 mm BD) during a short-term satiation experiment (Nakayama et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Non-size-selective predation on fish larvae by moon jellyfish Aurelia aurita under low oxygen concentrations

Shoji

2008

Plankton Benthos Res

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Abstract:The moon jellyfish Aurelia aurita has increased in abundance in coastal waters around Japan during recent decades. Since the moon jellyfish is highly tolerant of low dissolved oxygen concentrations, predation impacts by moon jellyfish on zooplankton can increase during summer hypoxia in coastal waters, which is often caused by anthropogenic effects such as an increase in nutritional loading from the land. Laboratory experiments were conducted in order to test the hypothesis that summer hypoxia leads to qualitative changes in predator-prey interactions between moon jellyfish and larval fish. Larvae of a common coastal fish, red sea bream Pagrus major (2.9, 4.1, 6.2 and 8.6 mm in standard length), were used for the experiments. Predation rates (% of larvae preyed on by a moon jellyfish per 10 min.) were examined at four oxygen concentrations (1, 2, 4 and 5.8 mg L Ϫ1 ) in 10 L tanks (4 replicates). Size-selective predation was observed at the two highest oxygen concentrations (4 and 5.8 mg L Ϫ1 ): about half of the 6.2 and 8.6 mm larvae survived the 10 min. trials while more than 85% of the 2.9 and 4.1 mm larvae were captured. Larval body size did not affect the predation rates at the two lowest oxygen concentrations (1 and 2 mg L Ϫ1 ): more than 90% of larvae in all size classes were caught. These results indicate that trophic flow from ichthyoplankton to moon jellyfish increases during summer hypoxia in coastal waters and a qualitative change in predator-prey interaction, i.e., shift from size-selective to non-sizeselective predation occurs at oxygen concentrations Ͻ2 mg L Ϫ1.

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“…Larval mortality can affect larval supply and, subsequently, recruitment (Milicich et al, 1992). There are many sources of larval mortality including starvation (e.g., Cushing, 1975Cushing, , 1990, predation (e.g., Moller, 1984;McGurk, 1986) and expatriation (e.g., Sponaugle and Pinkard, 2004). Starvation can be a major source of mortality in fish larvae (Leggett and Deblois, 1994).…”

Section: The Recruitment Of Lutjanus Carponotatus To One Tree Islandmentioning

confidence: 99%

“…As large numbers of larvae are produced, small changes in the pre-settlement mortality rate can greatly affect the strength of recruitment events (Cowen et al, 2000;Houde, 2008). The pre-settlement mortality rate of fish larvae can depend on multiple factors including the availability of food (e.g., Cushing, 1975Cushing, , 1990, the abundance of predators (e.g., Moller, 1984;McGurk, 1986) and favorable or unfavorable oceanography (e.g., Sponaugle and Pinkard, 2004;Sponaugle et al, 2005), and this complexity can make it difficult to identify causes of variability in recruitment (Leggett and Deblois, 1994;Houde, 2008).…”

Section: Introductionmentioning

confidence: 99%

Wind Conditions on the Great Barrier Reef Influenced the Recruitment of Snapper (Lutjanus carponotatus)

et al. 2018

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Most coral reef fishes have a pelagic larval stage before recruiting to reefs. The survival of larvae and their subsequent recruitment can drive the dynamics of reef populations. Here we show that the recruitment of the snapper Lutjanus carponotatus to One Tree Island in the Capricorn Bunker Group, in the southern Great Barrier Reef, was highly variable over 23 years. We predicted that the currents in the Capricorn Bunker Group, including their wind driven components and the Capricorn Eddy (a nearby transient oceanic eddy), would affect patterns of recruitment. A biophysical model was used to investigate this prediction. L. carponotatus were collected from One Tree Island and the dates when they were in the plankton as larvae were determined from their otoliths. The winds present during the pelagic phases of the fish were examined; they were found to have survived either longshore (SSE) winds that induced little cross shelf movement in the larval plume or cross shelf (ENE) winds that induced little longshore movement. The unidirectional transportation of the larval plume in these conditions was favorable for recruitment as it kept the plume concentrated in the Capricorn Bunker Group. These winds were more prevalent in the periods of peak L. carponotatus production that preceded high recruitment. Dispersal under average winds (6.2 m s −1 from the prevailing ESE) and strong winds (velocity 1.5 times average), with and without the Capricorn Eddy, was also modeled. Each of these combinations were less favorable for recruitment than the longshore and cross shelf winds larval L. carponotatus survived before reaching OTI. The larval plume was comparatively less concentrated in the Capricorn Bunker Group under average winds. Strong winds transported the larval plume far longshore, to the NW, away from the Capricorn Bunker Group, while the Capricorn Eddy transported larvae seaward into oceanic waters. Larval swimming could counteract these dispersive forces; however, significant dispersion had occurred before larvae developed strong swimming and orientation abilities. This study provides a physical proxy for the recruitment of snapper. Further, we have demonstrated that great insights into recruitment variability can be gained through determining the specific conditions experienced by survivors.

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Reduction of a Larval Herring Population by Jellyfish Predator

Cited by 188 publications

References 3 publications

Ecosystem approach to fisheries management in the northern Benguela: the Namibian experience

Ecosystem approach to fisheries management in the northern Benguela: the Namibian experience

Non-size-selective predation on fish larvae by moon jellyfish Aurelia aurita under low oxygen concentrations

Wind Conditions on the Great Barrier Reef Influenced the Recruitment of Snapper (Lutjanus carponotatus)

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