Influence of coastal eddies and counter-currents on the influx of spiny lobster, Panulirus argus, postlarvae into Florida Bay

Yeung, Cynthia; Jones, David L.; Criales, María M.; Jackson, T. L.; Richards, William J.

doi:10.1071/mf01110

Cited by 39 publications

(35 citation statements)

References 22 publications

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“…They found that four drifters spent 1, 3, 5 and 8 months, respectively, in various eddies off the Gulf of Batabanó, suggesting possible larval retention, taking into account that larvae remain about 6-8 months in the ocean (Alfonso et al, 1991). Yeung et al (2001) also concluded that in the Florida Keys, a retention pathway of 6-8 months is possible for P. argus local larvae, because of the circulation mechanisms determined by eddies and counter-current systems.…”

Section: Stock Assessmentmentioning

confidence: 95%

Bioeconomic modelling and risk assessment of the Cuban fishery for spiny lobster Panulirus argus

Puga¹,

Vázquez²,

Martínez³

et al. 2005

Fisheries Research

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Section: Stock Assessmentmentioning

confidence: 95%

Bioeconomic modelling and risk assessment of the Cuban fishery for spiny lobster Panulirus argus

Puga¹,

Vázquez²,

Martínez³

et al. 2005

Fisheries Research

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“…Therefore we think that, for all shallow-water palinurid species, including P. ornatus and P. argus, whose larval transport pathways are effected by multi-current systems (Dennis et al 2001;Yeung et al 2001), metamorphosis will occur mainly in, or adjoining, regions where there are sustained and richer food resources for instars of the penultimate and final stage phyllosomas at critical periods of their moulting cycles (McWilliam and Phillips 1997). This nutritional effect has been found experimentally for other decapod larvae (see Anger 2001, Chap.…”

Section: Discussionmentioning

confidence: 99%

“…However, the ocean circulation off the Florida Keys is marked by the warm Florida Current which passes close to the reef tract, and coastal eddies and counters currents (Yeung et al 2001). Larval transport of P. argus may be driven by ocean currents, eddies and wind-driven currents, but the exact mechanisms are uncertain (Yeung and Lee 2002).…”

Section: Panulirus Argusmentioning

confidence: 99%

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Spiny lobster development: where does successful metamorphosis to the puerulus occur?: a review

Phillips

McWilliam²

2008

Rev Fish Biol Fisheries

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This review re-addresses the question: Where does metamorphosis to the puerulus mainly take place among the shallow-water palinurids? A decade ago we reviewed this ecological question in a paper that focused on phyllosomal development of the western rock lobster, Panulirus cygnus. The main region of occurrence of its metamorphosis was found to be in the slope region beyond the shelf break. Because the puerulus of P. cygnus is a non-feeding stage, it was hypothesised that metamorphosis will not occur until the final phyllosoma has reached some critical, and specific, level of stored energy reserves. For late larval development and successful metamorphosis of P. cygnus, the richest food resources seem to be located in the slope waters adjoining the shelf break off Western Australia. This, like most shelf break areas, is a region of higher zooplankton and micronekton biomass than is usually found further offshore, and is dominated (in winter-spring months) by the warm south-flowing Leeuwin Current. In this new review, distribution and abundance data of final phyllosomas and pueruli are examined from, Panulirus argus, Panulirus cygnus, Panulirus japonicus, Panulirus ornatus and Jasus edwardsii, and where possible, related to features of the satellite imagery of the areas in which they occur. We hypothesise that metamorphosis will occur where the final stages have partaken of sufficient, appropriate nutrition to provide them with a reserve of bioenergetic resources, and this can occur where oceanographic fronts effect greater planktonic productivity and concentrations of food organisms. This may be near the shelf-break, or out to large distances offshore, because of large-scale oceanographic events such as the prevailing current system, its off-shoots, mesoscale eddy fronts, counter-currents, etc. However, we contend that, in terms of population recruitment, metamorphosis in most shallow-water palinurid species occurs mainly in the slope waters adjoining the shelf break of the region to which the species is endemic. Although some final phyllosomas may metamorphose much further offshore, it is unlikely that these pueruli will reach the shore, let alone settle and successfully moult to the juvenile stage. All of the data indicate that successful metamorphosis from the final-stage phyllosoma to the puerulus stage in all species occurs offshore but close to the continental shelf.

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“…She reported that its metamorphosis is believed to occur ''offshore'', but was thwarted in answering the question because catches of final-stage phyllosomas and pueruli of this species were too low to make any estimates. Yeung therefore focussed on larval transport pathways across the coastal eddies in a circulation model of the Florida Keys and offshoots of the Florida Current (see Yeung et al 2001) and favoured an external stimulus as the 'trigger' for metamorphosis. Yeung (2005) suggested that ''entrainment of the larvae in eddies of the coastal environment with different chemistry, biology and hydrodynamics from the surrounding ocean'' would trigger their metamorphosis, and concluded that ''with further field and laboratory investigation we might find that requisites for metamorphosis [of spiny lobsters] are variable among species, environments, or regions.''…”

Section: Discussionmentioning

confidence: 99%

Spiny lobster development: mechanisms inducing metamorphosis to the puerulus: a review

McWilliam¹,

Phillips

2007

Rev Fish Biol Fisheries

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This review outlines current knowledge of mechanisms effecting metamorphosis in decapod crustaceans and insects. The comparative approach demonstrates some of the complexities that need resolving to find an answer to the question raised frequently by ecologists: ''What triggers metamorphosis in spiny lobsters?'' It is evident that crustacean moulting and metamorphosis are genetically controlled through endocrine systems that mediate gene expression. The molecular mechanisms underlying these developmental processes have been studied intensively in insects, particularly in the fruitfly, Drosophila melanogaster (Diptera), and some lepidopteran species. Comparatively, there is minimal information available for a few decapod crustacean species, but none for spiny lobsters (Palinuridae). Nothing was known of hormone signalling transduction pathways, via nuclear receptors (NRs) and gene activation during larval moults in palinurids-until a recent, ground-breaking study of early phyllosomal development of Panulirus ornatus by Wilson et al. (Rock Lobster Enhancement and Aquaculture Subprogram. FRDC Project 2000/263, Australian Govt, Fisheries Research and Development Corporation and Australian Institute of Marine Science, Nov 2005).Their study not only identified homologues of five hormone NRs of D. melanogaster, but also patterns of gene regulation showing strong similarities to those of gene expression found in insect larval development. Their results indicated that control of moulting and metamorphosis in palinurids closely parallels that in insects, suggesting that insects can serve as model systems for elucidating molecular mechanisms in larval decapods. In insects and crustaceans, the steroid hormone, ecdysone, (20E) initiates moulting. In insects, juvenile hormone (JH) mediates the type of larval moult that occurs, either anamorphic or metamorphic. The latter results when the level of JH in the haemolymph drops in the final larval instar. High levels of JH inhibit the metamorphic moult during insect larval development. The interaction of 20E and JH is not fully understood, and the operative molecular mechanisms are still being elucidated. No nuclear receptor for JH has been identified, and alternative JH signalling pathways await identification. In decapod crustaceans, methyl farnesoate (MF), a precursor of JH, replaces the latter in other functions mediated by JH in insects; but there is little evidence indicating that MF plays a similar 'antimetamorphic' role in decapod larval moults.

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Influence of coastal eddies and counter-currents on the influx of spiny lobster, Panulirus argus, postlarvae into Florida Bay

Cited by 39 publications

References 22 publications

Bioeconomic modelling and risk assessment of the Cuban fishery for spiny lobster Panulirus argus

Bioeconomic modelling and risk assessment of the Cuban fishery for spiny lobster Panulirus argus

Spiny lobster development: where does successful metamorphosis to the puerulus occur?: a review

Spiny lobster development: mechanisms inducing metamorphosis to the puerulus: a review

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