Reproductive dynamics of the tiger prawn Penaeus esculentus, and a comparison with P. semisulcatus, in the north-western Gulf of Carpentaria, Australia

Crocos, PJ

doi:10.1071/mf9870091

Cited by 37 publications

(22 citation statements)

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“…Also, the overall incidence of mature females was lower in Moreton Bay (9.4%) compared with results of studies undertaken in the Gulf. In the present study, approximately 20%) of females >35 mm CL were mature while in the Gulf about 70 to 80% of females >35 mm CL were mature (Buckworth 1985, Robertson et al 1985, Crocos 1987b.…”

Section: Latitudinal Variation In Penaeus Esculentusmentioning

confidence: 98%

“…(1990) in Torres Strait (lOOS). Crocos (1987b) concluded from ovarian histological examination that the minimum size at maturity was 25 mm CL and that about 35% of 30 mm CL females were mature in the northwestern Gulf (13" 30's). Also, the overall incidence of mature females was lower in Moreton Bay (9.4%) compared with results of studies undertaken in the Gulf.…”

Section: Latitudinal Variation In Penaeus Esculentusmentioning

confidence: 99%

“…Although of major commercial importance nationally (Dall 1985), P esculentus constitutes only 10 to 15% of the total prawn catch in Moreton Bay. Its population dynamics have been studied intensively in Torres Strait, northeastern Australia (Mellors 1990), the Gulf of Carpentana, northern Australia (Kirkwood & Somers 1984, Crocos 1987b, Loneragan et al 1994 and Exmouth Gulf, Western Australia (Penn & Caputi 1985, Penn et al 1995. Post-larvae and juveniles prefer shallow seagrass habitats (Young & Carpenter 1977, Staples et al 1985, Coles et al 1987, O'Brien 1994.…”

Section: Introductionmentioning

confidence: 99%

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Spawning stock dynamics of two penaeid prawns, Metapenaeus bennettae and Penaeus esculentus, in Moreton Bay, Queensland, Australia

Courtney¹,

Masel²

1997

Mar. Ecol. Prog. Ser.

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ABSTRACT. Spawning stock dynamics of 2 commercially important penaeid prawns, Metapenaeus bennettae and Penaeus esculentus, from 9 stations in Moreton Bay (27" 15'S, 153'15'E), southeast Queensland, Australia, were examined. An egg production index (EPI), based on the relative abundance, proportion that were mature or ripe, and s u e of adult females, was used as a measure of e g g production in the 2 populations. Egg production by M. bennettae was 20 to 30 higher than that by P esculentus, extended over 7 to 8 mo each year and peaked from February to March (late summer to early autumn). Monthly patterns in egg production by M. bennettaevaried between years. In contrast, P esculentiis produced most of its eggs in a single, clearly defined peak in Octobcr (spring), although production continued to March (early autumn) each year The seasonal onset and subsequent decline in maturation In P esculentus were r a p~d .Egg production by M. bennettae was several times higher at the 5 northern statlons than at the 4 southern stations and negatively correlated with salinity during the main spawning p e r~o d .Egg production by P esculentus was less varied among stations and positively correlated with depth. P esculentus appeared more likely than M. bennettae to experience recruitment overfishing because (1) the peak spawning period for F! esculentus was dependent on relatively few adult females spawning over a short period, and (2) the selectivity of trawl nets used in the bay was much higher for P esculentus spawners than for those of M. bennettae Compared with more northern populations, P esculentus in Moreton Bay matured a t a larger size, had lower inc~dences of insemination and mature or ripe females, and had a shorter spawning period. These results suggest the likelihood of recruitment overfishing in F! esculentus increases with increasing latitude.

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Section: Latitudinal Variation In Penaeus Esculentusmentioning

confidence: 98%

Section: Latitudinal Variation In Penaeus Esculentusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Spawning stock dynamics of two penaeid prawns, Metapenaeus bennettae and Penaeus esculentus, in Moreton Bay, Queensland, Australia

Courtney¹,

Masel²

1997

Mar. Ecol. Prog. Ser.

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“…In contrast, in Amvrakikos Gulf, maximum insemination frequency seems to be signiWcantly lower (56 % in June) (Klaoudatos et al 1992) than in Thermaikos. High percentages of spermatophore insemination are recorded throughout the year for other closed thelycum species: Melicertus longistylus, elicertus latisulcatus (Courtney and Dredge 1988), Penaeus esculentus (Crocos 1987b), arsupenaeus japonicus (Minagawa et al 2000).…”

Section: Spermatophore Inseminationmentioning

confidence: 99%

“…The proportion of mature females increases with increasing size in M. japonicus (Minagawa et al 2000), P. semisulcatus (Crocos 1987a), P. esculentus (Crocos 1987b), Metapenaeus dalli (Potter et al 1989), M. endeavouri, and M. ensis (Crocos et al 2001). On the contrary, according to Courtney et al (1995), in .…”

Section: Ovarian Stagesmentioning

confidence: 99%

Reproductive biology of the prawn Melicertus kerathurus (Decapoda: Penaeidae) in Thermaikos Gulf (N. Aegean Sea)

Kevrekidis

Thessalou-Legaki

2012

Helgol Mar Res

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The reproductive biology including insemination frequency, ovarian maturation, gonadosomatic index (GSI), size at Wrst maturity, and fecundity of Melicertus kerathurus were investigated using monthly samples from Thermaikos Gulf. Insemination was recorded by the presence of a spermatophore in the thelycum, and ovarian development was based on macroscopic ovarian staging (ST1-ST5). Inseminated females were found throughout the year with high percentages recorded from April to July. Although all ovarian stages were represented in mated females, insemination increased with size and ovarian maturation. High percentages of vitellogenic or mature ovarian stages were observed from May to July, while immature and developing ovaries were predominant mainly in winter. Spawned ovaries occurred from May to October. Carapace length at Wrst maturity based on the presence of a spermatophore (CL 50sp ) was estimated at 39.20 mm, while that based on the presence of vitellogenic and mature ovaries (CL 50ov ) at 40.70 mm. The seasonal peak in the proportion of mature females (ST4) varied with size. Inseminated females at ST4 and GSI peaked in June-July. GSI varied in relation to insemination status and ovarian stage. In large females (>50 mm CL), the decline in mature ovaries and GSI increment with size indicates a relative reduction in the reproductive output. The number of oocytes ranged from 62,742 to 602,947 (mean § SD: 268,000 § 113,000). As the prawns are targeted during the spawning season, mainly by the artisanal Wshery, and female size at Wrst maturity is selected by artisanal net size, managerial measures toward artisanal Wshery should be implemented.

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Habitat Shifts by Decapods—an Example of Connectivity Across Tropical Coastal Ecosystems

Haywood

Kenyon

2009

Ecological Connectivity Among Tropical Coastal Ecosystems

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Reproductive dynamics of the tiger prawn Penaeus esculentus, and a comparison with P. semisulcatus, in the north-western Gulf of Carpentaria, Australia

Cited by 37 publications

References 0 publications

Spawning stock dynamics of two penaeid prawns, Metapenaeus bennettae and Penaeus esculentus, in Moreton Bay, Queensland, Australia

Spawning stock dynamics of two penaeid prawns, Metapenaeus bennettae and Penaeus esculentus, in Moreton Bay, Queensland, Australia

Reproductive biology of the prawn Melicertus kerathurus (Decapoda: Penaeidae) in Thermaikos Gulf (N. Aegean Sea)

Habitat Shifts by Decapods—an Example of Connectivity Across Tropical Coastal Ecosystems

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