Stock structure of Australian herring (Arripis georgiana) in southwestern Australia

Ayvazian, Suzanne G.; Bastow, Trevor P.; Edmonds, John S.; How, Jason; Nowara, Gabrielle B.

doi:10.1016/j.fishres.2003.08.003

Cited by 21 publications

(20 citation statements)

References 33 publications

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“…Alternatively, it may be a result of contrasting migratory behaviours where some garfish remain relatively site-attached while others disperse more widely, or at least occupy home ranges that exhibit some degree of overlap with neighbouring groups. Similar migratory strategies have been identified in the Australian Herring (Arripis georgiana) (Ayvazian et al 2004) and the Western Australian Pilchard (Sardinops sagax) (Edmonds and Fletcher 1997), two species that are otherwise considered to be highly migratory. Determining partial residency is dependent on fine-scale spatial sampling (i.e., how close the sampling areas are to each other, how large the sites are considered to be and the time-frame in which the samples were collected) (Edmonds and Fletcher 1997).…”

Section: Discussionsupporting

confidence: 56%

“…Alternatively, if fish occupy a specific location for most of their lives, then they would have a site-specific signature that would be indicative of a level of subpopulation structure. This relationship, however, is only consistent if there is no significant variation in the isotopic composition of the ambient water (Ayvazian et al 2004). Ontogenetic correlations of δ 18 O with mean SST for South Australian garfish did not reflect temperature in the manner that would be expected.…”

Section: Discussionmentioning

confidence: 85%

“…Variation in otolith δ 18 O has been used for determining the population structure of commercially harvested fish species (Edmonds and Fletcher 1997;Newman et al 2000;Ayvazian et al 2004). Differences in oxygen isotope values among locations are generally explained by relative differences in water temperature.…”

Section: Discussionmentioning

confidence: 99%

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Stock discrimination of Southern Garfish (Hyporhamphus melanochir) by stable isotope ratio analysis of otolith aragonite

et al. 2010

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Section: Discussionsupporting

confidence: 56%

Section: Discussionmentioning

confidence: 85%

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Stock discrimination of Southern Garfish (Hyporhamphus melanochir) by stable isotope ratio analysis of otolith aragonite

et al. 2010

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“…They provide a record of the growth patterns in individuals, cohorts and populations and can accurately estimate age and growth at both the daily and yearly level (Campana and Thorrold, 2001). Increment counts and measurements can provide information on hatching times and growth rates (Sinclair and Tremblay, 1984;Munk et al, 1991;Gallego et al, 1999;Fox et al, 2003) and offer insight into stock structure for numerous species (Mosegaard and Madsen, 1996;Finn et al, 1997;Brophy and Danilowicz, 2002;Ayvazian et al, 2004). Variation in otolith shape is also a useful descriptor for discriminating between fish stocks (Campana and Casselman, 1993;Begg and Brown, 2000;Turan, 2000;Robertson and Talman, 2002;Cardinale et al, 2004;Stransky, 2005) and can also be used in age classification (Bermejo, 2007).…”

Section: Introductionmentioning

confidence: 99%

Shape analysis of otolith annuli in Atlantic herring (Clupea harengus); a new method for tracking fish populations

2008

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“…26° S; 113° E) on the west coast and eastwards to Port Phillip Bay ( c . 38° S; 145° E) in south‐eastern Australia (Hutchins & Swainston, 1999; Ayvazian et al , 2004). This marine species spawns in coastal waters south of c .…”

Section: Introductionmentioning

confidence: 99%

Implications of the divergent use of a suite of estuaries by two exploited marine fish species

Potter

Chuwen

Hesp

et al. 2011

Journal of Fish Biology

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Biological characteristics of the marine species King George whiting Sillaginodes punctatus and Australian herring Arripis georgianus in three seasonally open estuaries (Broke, Irwin and Wilson Inlets), one permanently open estuary (Oyster Harbour) and one normally closed estuary (Wellstead Estuary) on the south coast of Western Australia have been determined and compared. Sillaginodes punctatus enters the seasonally and permanently open estuaries early in life and reaches total lengths (L(T)) >280 mm at which it can be legally retained and thus contributes to commercial and recreational fisheries in these systems. This sillaginid almost invariably emigrates from these estuaries before reaching its typical size at maturity (L(T50)) and does not return after spawning in marine waters. In contrast, virtually all female A. georgianus (≥ 98%) in the three seasonally open estuaries and the majority in the normally closed (89·5%) and permanently open estuaries (83%) exceeded the L(T50) of this species at maturity, reflecting the fact that the nursery areas of this species are predominantly located much further to the east. Although adult females of A. georgianus in seasonally open and normally closed estuaries had developed mature ovaries by autumn, at which time they were prevented from migrating to the sea by closure of the estuary mouths, this species did not spawn in those estuaries. The oocytes in their ovaries were undergoing extensive atresia, a process that had been incipient prior to oocyte maturation. As the adult females of A. georgianus in the permanently open Oyster Harbour at this time all possessed resting gonads, i.e. their oocytes were all previtellogenic, the adults that were present in that estuary earlier and were destined to spawn in autumn must have emigrated from that permanently open estuary to their marine spawning areas prior to the onset of gonadal recrudescence. The body masses at length of A. georgianus, which were almost invariably higher in summer and autumn than in winter and spring, were greater in the very productive environments of the seasonally open and normally closed estuaries than in the less productive and essentially marine environment of Oyster Harbour and coastal marine waters. In general, the same pattern of differences between water bodies was exhibited by the growth of A. georgianus and by the more restricted data for body mass at L(T) and growth of S. punctatus. Despite an increase in anthropogenic activities in Wilson Inlet over the last two decades, the growth of both species was very similar to that recorded 20 years earlier. The fisheries implications of the results for the two species are discussed.

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Stock structure of Australian herring (Arripis georgiana) in southwestern Australia

Cited by 21 publications

References 33 publications

Stock discrimination of Southern Garfish (Hyporhamphus melanochir) by stable isotope ratio analysis of otolith aragonite

Stock discrimination of Southern Garfish (Hyporhamphus melanochir) by stable isotope ratio analysis of otolith aragonite

Shape analysis of otolith annuli in Atlantic herring (Clupea harengus); a new method for tracking fish populations

Implications of the divergent use of a suite of estuaries by two exploited marine fish species

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