Growth, mortality and yield-per-recruit of deep-water royal red prawns (Haliporoides sibogae) off eastern Australia, using the length-based MULTIFAN method

Around the end of the twentieth century, awareness grew that, in addition to the Taranaki Basin, other unexplored basins in New Zealand’s large exclusive economic zone (EEZ) and extended continental shelf (ECS) may contain petroleum. GNS Science initiated a program to assess the prospectivity of more than 1 million square kilometres of sedimentary basins in New Zealand’s marine territories. The first project in 2001 acquired, with TGS-NOPEC, a 6,200 km reconnaissance 2D seismic survey in deep-water Taranaki. This showed a large Late Cretaceous delta built out into a northwest-trending basin above a thick succession of older rocks. Many deltas around the world are petroleum provinces and the new data showed that the deep-water part of Taranaki Basin may also be prospective. Since the 2001 survey a further 9,000 km of infill 2D seismic data has been acquired and exploration continues. The New Zealand government recognised the potential of its frontier basins and, in 2005 Crown Minerals acquired a 2D survey in the East Coast Basin, North Island. This was followed by surveys in the Great South, Raukumara and Reinga basins. Petroleum Exploration Permits were awarded in most of these and licence rounds in the Northland/Reinga Basin closed recently. New data have since been acquired from the Pegasus, Great South and Canterbury basins. The New Zealand government, through Crown Minerals, funds all or part of a survey. GNS Science interprets the new data set and the data along with reports are packaged for free dissemination prior to a licensing round. The strategy has worked well, as indicated by the entry of ExxonMobil, OMV and Petrobras into New Zealand. Anadarko, another new entry, farmed into the previously licensed Canterbury and deep-water Taranaki basins. One of the main results of the surveys has been to show that geology and prospectivity of New Zealand’s frontier basins may be similar to eastern Australia, as older apparently unmetamophosed successions are preserved. By extrapolating from the results in the Taranaki Basin, ultimate prospectivity is likely to be a resource of some tens of billions of barrels of oil equivalent. New Zealand’s largely submerged continent may yield continent-sized resources.

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Biotic characteristics of Ordovician deep-water cherts from Eastern Australia

Palaeogeography Palaeoclimatology Palaeoecology ◽

10.1016/j.palaeo.2011.11.012 ◽

2012 ◽

Vol 367-368 ◽

pp. 63-72 ◽

Cited By ~ 10

Author(s):

Ian G. Percival

Keyword(s):

Deep Water ◽

Eastern Australia ◽

Biotic Characteristics

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Estimation of Growth, Mortality and Yeild per Recruit of the Australian School Shark, Galeorhinus australis (Macleay), from Tag Recoveries

Marine and Freshwater Research ◽

10.1071/mf9790625 ◽

1979 ◽

Vol 30 (5) ◽

pp. 625 ◽

Cited By ~ 24

Author(s):

CJ Grant ◽

RL Sandland ◽

AM Olsen

Keyword(s):

Mortality Rate ◽

Minimum Length ◽

Human Consumption ◽

Natural Mortality ◽

Australian School ◽

Breeding Stock ◽

South Eastern ◽

Eastern Australia ◽

Yield Per Recruit ◽

Slow Growing

A study of growth, mortality and yield per recruit of G. australis in south-eastern Australia has been undertaken. The species is long-lived, slow growing and has a low natural mortality rate. The fishery in Victoria was recently adversely affected by the imposition in 1972 of an upper size limit of 104 cm, in addition to an existing legal minimum length of 91 cm, to ensure that sharks with flesh mercury levels in excess of 0.5 �g/g were not taken for human consumption. More recent (1976) legislation altered these limits to a minimum length of 71 cm and a maximum length of 112 cm. This paper discusses the possible effects of increased exploitation within the length limitations which are currently operative on the availability of breeding stock of the school shark.

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Austrarturellidae (Crustacea : Isopoda : Valvifera), a new family from Australasia

Invertebrate Systematics ◽

10.1071/it9920843 ◽

1992 ◽

Vol 6 (4) ◽

pp. 843 ◽

Cited By ~ 4

Author(s):

GCB Poore ◽

TM Bardsley

Keyword(s):

New Zealand ◽

Continental Shelf ◽

Deep Water ◽

Type Species ◽

Proximal Part ◽

New Family ◽

Eastern Australia ◽

The Family ◽

North Eastern

The family Austrarcturellidae is established for Austrarcturella, gen. nov., Abyssarcturella, gen. nov., Pseudarcturella Tattersall (1921) and Scyllarcturella, gen. nov. Males of this family share a uniquely modified first pleopod in which the exopod has a lateral secondary ramus. The pleotelson is usually of a unique inverted flat-bottomed boat-shape, and the dactyli of pereopods 2 and 3 have a minute proximal part and elongate unguis. The genus Pseudarcturella Tattersall (1921) is redefined; its type species, P. chiltoni Tattersall, is redescribed and P. crenulata, sp. nov. added. Thirteen species of Austrarcturella, gen. nov. are described from the Australian continental shelf and slope: A. oculata (Beddard) (type species), A. aphelura, sp. nov., A. brychia, sp. nov., A. callosa, sp. nov., A. cava (Hale), A. corona, sp. nov., A. hirsuta, sp. nov., A. inornata, sp. nov., A. macrokola, sp. nov., A. pictila, sp. nov., A. sexspinosa, sp. nov., A. spinipes, sp, nov. and A. thetidis, sp. nov. One further species, A. galathea, sp, nov., is described from New Zealand. Abyssarcturella, gen. nov. is diagnosed and two species from deep water in eastern Australia are described: A. panope, sp. nov. (type species) and A. cidaris, sp. nov. Scyllarcturella, gen, nov. is diagnosed for S. falcata, sp. nov. from deep water in north-eastern Australia. Keys to all taxa are presented and their distributions are briefly discussed.

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Yield-per-recruit analysis of Eastern King Prawns Penaeus plebejus Hess, in Eastern Australia

Marine and Freshwater Research ◽

10.1071/mf9900175 ◽

1990 ◽

Vol 41 (1) ◽

pp. 175 ◽

Cited By ~ 15

Author(s):

JP Glaister ◽

SS Montgomery ◽

VC McDonall

Keyword(s):

Fishing Effort ◽

Commercial Catch ◽

Eastern Australia ◽

The Difference ◽

Time Lagged ◽

Catch Composition ◽

Catch Per Effort ◽

Yield Per Recruit ◽

The Relationship ◽

Mortality Estimates

The eastern king prawn, P. plebejus, has been commercially exploited for over 50 years. Controversy has arisen over the presumed effect of increasing fishing effort on reported declining catch per vessel and the need for further management of the fishery. The present study develops the information necessary to evaluate this presumption by analysing landing statistics, data developed from a log-book programme, commercial catch composition and data from a series of mark-recapture experiments conducted on part of the fishing grounds. Population parameters (growth, mortalities and other losses) were calculated via a series of tagging experiments. Recapture rates of tagged prawns were examined for each point release (local recapture) and for the state as a whole (sequentially applied effort), the difference providing estimates of emigration rate. Weekly values chosen for these parameters allowed calculation of yield-per-recruit estimates. For 1979 and 1980, respectively, fishing mortality estimates ranged between 0.04 and 0.08 per week, depending upon number of vessels per port; emigration was estimated to be 0.13 and 0.18 per week for the two years, tagging mortality (0.08 per week), and all other losses other than by tagging and emigration at 0.06 and 0.08 per week. A compartmented, time-lagged model of the fishery was used to predict changes in yield per recruit as a consequence of changes in management strategy and to describe the relationship between fishing effort and yield per recruit. The analyses suggested that limited benefits in terms of yield per recruit would eventuate from substantial increases in effort but that substantial decreases in catch per effort were likely.

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Comparison of life histories of two deep-water sharks from eastern Australia: the piked spurdog and the Philippine spurdog

Marine and Freshwater Research ◽

10.1071/mf15176 ◽

2016 ◽

Vol 67 (10) ◽

pp. 1546 ◽

Cited By ~ 1

Author(s):

Cassandra L. Rigby ◽

Ross K. Daley ◽

Colin A. Simpfendorfer

Keyword(s):

Life History ◽

Deep Water ◽

Life Histories ◽

Growth Models ◽

New South ◽

South Wales ◽

Eastern Australia ◽

History Of ◽

Males And Females ◽

Species Specific

Deep-water sharks have low biological productivity and are vulnerable to exploitation with species-specific regional life history required to enable effective management. The present study describes the life history of two squalids collected from Australia: (1) the piked spurdog (Squalus megalops) from the tropical Great Barrier Reef; and (2) the Philippine spurdog (S. montalbani) from New South Wales. Maximum observed ages for males and females were 18 and 25 years for S. megalops and 28 and 27 years for S. montalbani. Multiple growth models were all well supported and indicated very slow growth rates for both species. The tropical S. megalops population was smaller and older at maturity than previously reported temperate populations. Males were mature at 352-mm stretched total length (LST) and 12.6 years, whereas females were mature at 422mm LST and 19.1 years. Squalus montalbani males were mature at 700mm LST and 21.8 years, whereas females were mature at 800mm LST and 26 years. Fecundity was lower for S. megalops than S. montalbani with two to three compared with nine to 16 embryos. Both species have a conservative life history, although in the event of overfishing the longer-lived, later-maturing and deeper-dwelling S. montalbani is likely to take longer to recover than S. megalops.

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Habitat requirements and spawning strategy of an estuarine-dependent fish, Percalates colonorum

Marine and Freshwater Research ◽

10.1071/mf13060 ◽

2014 ◽

Vol 65 (3) ◽

pp. 218 ◽

Cited By ~ 9

Author(s):

Dylan E. van der Meulen ◽

Chris T. Walsh ◽

Matthew D. Taylor ◽

Charles A. Gray

Keyword(s):

Deep Water ◽

Habitat Requirements ◽

Fine Scale ◽

Spatial And Temporal Patterns ◽

Spawning Activity ◽

Eastern Australia ◽

Close Proximity ◽

Prey Items ◽

Spawning Habitats ◽

Timing Of Spawning

Determining the links among estuarine hydrography, habitat and spawning of estuarine-dependent fish is essential for understanding reproductive dynamics, recruitment processes and directing conservation efforts. Acoustic tracking was used to evaluate fine-scale spatial and temporal patterns in spawning activity of Percalates colonorum (estuary perch) within the Shoalhaven River, south-eastern Australia. Plankton tows were used to determine the timing of spawning events. Tagged P. colonorum exhibited movements restricted to areas of structurally complex large wooden debris and a concrete ferry landing. Egg counts confirmed that spawning events coincided with adult aggregations, whereas egg abundances peaked at night during the first 2 h of the run-out tide. We postulate that spawning and recruitment success of P. colonorum is attributable to its selective spawning habitats that are (1) structurally complex to provide refuge and protection from predation, as well as congregate prey items, (2) adjacent to deep water of high velocities to maximise egg dispersal and (3) in close proximity to river entrance to facilitate coastal dispersal of eggs and inter-estuarine connectivity of larvae.

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Deep-water Galatheidae (Crustacea: Decapoda: Anomura) from southern and eastern Australia

Zootaxa ◽

10.11646/zootaxa.472.1.1 ◽

2004 ◽

Vol 472 (1) ◽

pp. 1 ◽

Cited By ~ 18

Author(s):

SHANE T. AHYONG ◽

GARY C.B. POORE

Keyword(s):

New Species ◽

Deep Water ◽

Distinct Species ◽

Australian Species ◽

Eastern Australia ◽

Two New Species ◽

First Time ◽

A New Species

Twenty-nine species in five genera of deep-water Galatheidae are reported from southern and eastern Australia increasing the known Australian galatheid fauna from 55 to 74. Species of Paramunida and Agononida are reported for the first time from southern Australia, with a new species of each described, P. antipodes and A. procera. Seven new species of Munida are described (M. aequalis, M. asprosoma, M. chydaea, M. endeavourae, M. isos, M. kapala, and M. spinicruris) increasing the number of known Australian species from 12 to 19. Four new species of Munidopsis are described (Ms. kensleyi, Ms. proales, Ms. tasmaniae, Ms. treis) and three species are newly recorded from Australia (Ms. centrina, Ms. dasypus, Ms. subsquamosa) increasing the known fauna from 11 to 18. Previous records of Ms. dasypus are based on Ms. kensleyi, but we include the first reliable record of M. dasypus from Australia. Previous records of Munida japonica from Australia are referable to M. rogeri Macpherson. Previous Australian records of Munida microps Alcock are referable to two new species, M. endeavourae and M. isos. Previous Australian records of Ms. dasypus are referable to Ms. kensleyi. Raymunida formosanus Lin, Chan & Chu is reported for the first time from Australia. Alcock s (1894) Munida squamosa var. prolixa is recognised as a distinct species of Agononida.

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