Strong relationships between levels of puerulus settlement and recruited stock abundance in the red rock lobster (Jasus edwardsii) in New Zealand

Booth, John D.; McKenzie, Andy

doi:10.1016/j.fishres.2008.08.009

Cited by 21 publications

(25 citation statements)

References 11 publications

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“…Catch rates in CRA 6 have increased by ∼30% over this period while those in CRA have doubled. In addition, there is no evidence from puerulus monitoring data in New Zealand to indicate that settlement patterns have decreased, at least over the last two decades (Booth and McKenzie, 2009). Overall, this suggests that the factors driving the declines in south-eastern Australia are spatially confined and are not impacting stocks within other regions.…”

Section: Discussionmentioning

confidence: 99%

“…However, more quantified estimates of settlement developed in the 1990s (Prescott et al, 1996), fuelled by the success in Western Australia of utilising puerulus settlement indices for Panulirus cygnus to predict future recruitment to the fishable biomass (Phillips, 1986;Caputi et al, 1995). An emerging settlement-recruitment relationship also appears evident in J. edwardsii, namely in Tasmania (Gardner et al, 2001) and New Zealand (Booth and McKenzie, 2009). In both species, it has been shown that future commercial catches can be successfully predicted from settlement indices using a 3-7-year time lag depending on the fishing region.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evidence of large-scale spatial declines in recruitment patterns of southern rock lobster Jasus edwardsii, across south-eastern Australia

Linnane

Gardner

Hobday³

et al. 2010

Fisheries Research

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evidence of large-scale spatial declines in recruitment patterns of southern rock lobster Jasus edwardsii, across south-eastern Australia

Linnane

Gardner

Hobday³

et al. 2010

Fisheries Research

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“…Esta relación entre las variaciones en los niveles de asentamiento y en la producción pesquera (extracción de langostas), para especies congenéricas de J. frontalis, presenta un alto nivel de correlación (Phillips et al, 2000;Gardner et al, 2001;MelvilleSmith et al, 2001;Booth & McKenzie, 2009). La importancia de estas variaciones interanuales en el asentamiento también es reportada por el análisis de sensibilidad del modelo IBM (Tabla 3), donde se sugiere que este sería uno de los factores que influiría significativamente en los niveles de conectividad dentro de los sistemas.…”

Section: ) Y Más Elevados (unclassified

Modelacion de la conectividad de las subpoblaciones de la langosta de Juan Fernandez (Jasus frontalis), a traves de un modelo biofisico

Porobić

Parada

Ernst

et al. 2012

lajar

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RESUMEN.El archipiélago de Juan Fernández y el de las islas Desventuradas, corresponden a dos pequeños grupos de islas oceánicas, separadas entre sí 460 mn y ubicadas aproximadamente a 360 mn frente a la costa chilena. La economía local de estas islas se basa casi exclusivamente en la extracción y comercialización de recursos marinos, focalizados principalmente en la explotación de la langosta (Jasus frontalis). Esta especie endémica se encuentra distribuída en ambos archipiélagos conformando una metapoblación, donde su dinámica y estructura poblacional sería modulada por forzantes oceanográficos, especialmente durante su prolongada fase larval planctónica. Se evaluó la estructura poblacional y el grado de conectividad-retención dentro y entre las diferentes islas mediante el uso de modelos biofísicos acoplados (modelos hidrodinámicos provenientes del modelo OFES y un modelo individuo basado de J. frontalis). El análisis de los resultados del modelo hidrodinámico indica la presencia de estructuras de mesoescala asociadas al sistema de islas. Índices provenientes del modelo biofísico muestran niveles importantes de conectividad-retención dentro y entre los sistemas de islas y una fuerte variación interanual de estos. Los resultados de la modelación biofísica indican que la varibilidad en el reclutamiento asociado al archipiélago de Juan Fernández depende mayoritariamente de larvas originadas en este mismo sistema, con un aporte importante de reclutas hacia el archipiélago de las Desventuradas. Se realizaron estudios de sensibilidad del modelo biofísico para identificar forzantes potenciales de las variables dependientes del modelo (e.g. índices de conectividad-retención), resultando en que los patrones temporales y espaciales reproductivos, la duración del estadio larval y la temporada (año) son altamente significativos. Finalmente, se propone que J. frontalis presenta una estructura metapoblacional con un alto nivel de conectividad en el archipiélago de Juan Fernández y un fuerte aporte de larvas hacia las islas Desventuradas. Estos flujos se ven determinados principalmente por el acoplamiento entre los factores biológicos y los factores oceanográficos imperantes. Palabras clave: langosta de Juan Fernández, Jasus frontalis, modelación biofísica, conectividad-retención, metapoblación, modelo individuo basado, Chile. Modeling the connectivity of Juan Fernández rock lobster (Jasus frontalis),subpopulations through a biophysical model ABSTRACT. Located approximately 360 nm off the coast of Chile there is a disjoint realm of two small oceanic islands systems, the Juan Fernández and the Desventuradas archipelago. Currently the local economy of the islands is almost exclusively supported by the harvest and trade of marine resources, focusing mainly on the exploitation of the rock lobster (Jasus frontalis). This endemic species is distributed in both archipelagos, forming a metapopulation, whose population structure and dynamic is modulated by oceanographic forcing, especially during its extended planktonic larval phase...

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“…Of these, underwater sound appears to be the most likely orientation cue at distances more than a few kilometres offshore (Montgomery et al 2006). Monitoring of the settlement of J. edwardsii pueruli in the CROP Marine Reserve with the use of artificial crevice collectors by MacDiarmid (1987) confirmed the generally very low levels of recruitment of juveniles to reefs in northeastern New Zealand (Booth & McKenzie 2009). …”

Section: Reproductionmentioning

confidence: 92%

Rock lobster biology and ecology: contributions to understanding through the Leigh Marine Laboratory 1962–2012

MacDiarmid

Freeman

Kelly³

2013

New Zealand Journal of Marine and Freshwater Research

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We review the contributions from research conducted through the Leigh Marine Laboratory (LML) since its establishment in 1962, to the understanding of the biology and ecology of the rock lobster, Jasus edwardsii. The number of publications (103 since 1978), their breadth of subject matter, and their frequency of citation indicate the influence of this research effort. The development of an underwater population sampling tool at the LML has been key to the research on lobster distribution, abundance, size structure and sex ratios. These, in turn, allowed significant insights into the impact of fishing on lobster populations, population recovery in marine reserves, the mating system of lobsters, and the cascading effects of lobster removal on reef communities. Other key research has focused on the planktonic larval and post-larval stages. It is likely that J. edwardsii has received a greater level of ecological research effort through the LML than any other species. The location of the LML on a stretch of rocky coastline with year-round easy access to the field, and the availability of a rebuilding population of J. edwardsii in an adjacent marine reserve, allowed coupled laboratory and field research to rapidly develop without the confounding effects of fishing. The LML is well placed to address outstanding questions about lobster biology and ecology, and to further contribute to the conservation and management of this important resource.

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Strong relationships between levels of puerulus settlement and recruited stock abundance in the red rock lobster (Jasus edwardsii) in New Zealand

Cited by 21 publications

References 11 publications

Evidence of large-scale spatial declines in recruitment patterns of southern rock lobster Jasus edwardsii, across south-eastern Australia

Evidence of large-scale spatial declines in recruitment patterns of southern rock lobster Jasus edwardsii, across south-eastern Australia

Modelacion de la conectividad de las subpoblaciones de la langosta de Juan Fernandez (Jasus frontalis), a traves de un modelo biofisico

Rock lobster biology and ecology: contributions to understanding through the Leigh Marine Laboratory 1962–2012

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