scholarly journals Reproductive biology of the green tiger prawn (Penaeus semisulcatus) in coastal waters of Bushehr, Persian Gulf

2008 ◽  
Vol 65 (9) ◽  
pp. 1593-1599 ◽  
Author(s):  
Nassir Niamaimandi ◽  
Arshad Aziz ◽  
Daud Siti Khalijah ◽  
Saed Che Roos ◽  
Bahram Kiabi
Keyword(s):  
Reproductive Biology ◽  
Coastal Waters ◽  
Persian Gulf ◽  
Reproductive Output ◽  
Minimum Size ◽  
Penaeus Semisulcatus ◽  
Spawning Stock ◽  
Tiger Prawn ◽  
The Persian Gulf ◽  
Sexually Mature

Abstract Niamaimandi, N., Aziz, A., Siti Khalijah, D., Che Roos, S. and Kiabi, B. 2008. Reproductive biology of the green tiger prawn (Penaeus semisulcatus) in coastal waters of Bushehr, Persian Gulf. – ICES Journal of Marine Science, 65: 1593–1599. The reproductive cycle of the green tiger prawn (Penaeus semisulcatus) was investigated in the coastal waters of Bushehr, Iran, Persian Gulf, from January 2003 to March 2004, with the aim of determining spawning seasons, durations, and locations in those waters. Bushehr waters are one of the main fishing grounds for P. semisulcatus in the Persian Gulf. Spawning peaks between December and March, but there is also some spawning in October. The minimum size at maturity was 24 mm carapace length (CL), and 50% were mature at 40 mm CL. The proportion of females that mated increased sharply above this size (40 mm), with 90% of females sexually mature at 54 mm CL. Spawning took place in a limited part of the study area, mostly offshore. Overexploiting the spawning stock could result in reduced reproductive output, limiting fishery production.

Reproductive dynamics of the grooved tiger prawn, Penaeus semisulcatus, in the north-western Gulf of Carpentaria, Australia

1987 ◽  
Vol 38 (1) ◽  
pp. 79 ◽  
Author(s):  
PJ Crocos
Keyword(s):  
Egg Production ◽  
Fishing Effort ◽  
Minimum Size ◽  
Limited Area ◽  
The North ◽  
Penaeus Semisulcatus ◽  
Spawning Stock ◽  
Tiger Prawn ◽  
A Minor ◽  
North Western

The reproductive cycle of female P. semisulcatus was investigated in the region north of Groote Eylandt in the Gulf of Carpentaria from August 1983 to March 1985. Approximately 1750 trawls were carried out over 21 monthly sampling cruises, and 13 748 females were examined. The minimum size at maturity was 29 mm carapace length (CL), and 50% of the population were mature at 39 mm CL. The proportion of females which had mated increased sharply above 34 mm CL with a maximum of 80% of females inseminated in the size range 38-54 mm CL. An index of population egg production, calculated from female abundance, the proportion of females spawning and fecundity according to size, was used as an indicator of reproductive output. Egg production was markedly seasonal, with a major spawning peak in August-September, and a minor one in February. Spawning occurred in a limited area within rhe study area. The spawning stock of P. semisulcatus is likely to be vulnerable to fishing pressure because the area and time of major spawning coincides with the major fishing effort in the region.

scholarly journals Population dynamic of green tiger prawn, Penaeus semisulcatus (De Haan) in Bushehr coastal waters, Persian Gulf

2007 ◽  
Vol 86 (2-3) ◽  
pp. 105-112 ◽  
Author(s):  
Nassir Niamaimandi ◽  
Aziz Bin Arshad ◽  
Siti Khalijah Daud ◽  
Ross Cheroos Saed ◽  
Bahram Kiabi
Keyword(s):  
Population Dynamic ◽  
Coastal Waters ◽  
Persian Gulf ◽  
Penaeus Semisulcatus ◽  
Tiger Prawn

scholarly journals Reproductive Biology of Ovigerous Female Emerita emeritus (Crustacea, Decapoda) in Bengkulu Coastal Waters, Indonesia: Egg Production and Reproductive Output

2016 ◽  
Vol 74 (3) ◽  
pp. 103-109 ◽  
Author(s):  
Ouratul Edritanti ◽  
Achmad Farajallah ◽  
Yusli Wardiatno
Keyword(s):  
Embryonic Development ◽  
Surface Temperature ◽  
Reproductive Biology ◽  
Coastal Waters ◽  
Egg Production ◽  
Reproductive Output ◽  
Ovigerous Female ◽  
Abundant Species ◽  
Sea Surface ◽  
Egg Volume

Abstract Emerita emeritus is an abundant species in Bengkulu coastal waters, but the knowledge of its reproductive biology is poor. The present study was conducted to elucidate the reproductive aspects of ovigerous female E. emeritus, including fecundity, egg volume and reproductive output. This study was conducted between January 2015 and January 2016 in Bengkulu coastal waters, Indonesia. Samples were collected manually using shovels and hands. The results showed that ovigerous females occurred every month. Fecundity increased significantly in ovigerous females proportional to the size. No correlation was shown between sea surface temperature and egg production. Fecundity and reproductive output decreased throughout the embryonic development.

Reproductive biology of a cave-associated population of the frog Rana palustris

1988 ◽  
Vol 66 (2) ◽  
pp. 329-333 ◽  
Author(s):  
William J. Resetarits Jr. ◽  
Robert D. Aldridge
Keyword(s):  
Body Size ◽  
Clutch Size ◽  
Reproductive Biology ◽  
Minimum Size ◽  
Detectable Effect ◽  
Size At Maturity ◽  
Fat Bodies ◽  
Autumn And Winter ◽  
Cave Use ◽  
Sexually Mature

Aspects of the reproductive biology of a trogloxene population of the pickerel frog, Rana palustris (Anura: Ranidae), were studied at a cave on the edge of the Ozark plateau in Missouri. Sexual dimorphism in body size was marked; there was almost no overlap in adult body size ranges, and the ratio of mean adult female snout–vent length (SVL) to adult male SVL was 1.26. All males with SVL of >45 mm were sexually mature. Males showed a clear cycle of spermatogenesis, with a peak in midsummer and a decline in spermatogenic activity through autumn and winter. Minimum size at maturity for females was 59 mm SVL. Females completed vitellogenesis during the summer, before their arrival at the study site. Of 28 females above the minimum size at maturity, 27 contained egg clutches. Clutch size, clutch mass, and egg size (mass) show significant positive correlation with SVL. Mean (±SD) clutch size was 1759 ± 548. Fat bodies were present in both males and females in autumn, but were totally depleted before the animals emerged from hibernation. Trogloxene R. palustris do not diverge significantly from patterns of reproductive biology typical of other temperate zone Rana. Current or past patterns of cave use have had no detectable effect on reproductive characteristics of trogloxene R. palustris.

Reproductive biology of largescale tonguesole Cynoglossus arel in coastal waters of Bandar Abbas, Persian Gulf, Iran

2015 ◽  
Vol 154 ◽  
pp. 142-157
Author(s):  
H. Ghaffari ◽  
H. Hosseinzadeh Sahafi ◽  
G.H. Engelhard ◽  
M. Mekhanik Babaei
Keyword(s):  
Reproductive Biology ◽  
Coastal Waters ◽  
Persian Gulf ◽  
Bandar Abbas

Mercury contamination in some marine biota species from Khuzestan shore, Persian Gulf

2014 ◽  
Vol 32 (7) ◽  
pp. 1302-1309 ◽  
Author(s):  
Mehdi Hosseini ◽  
Seyed Mohammad Bagher Nabavi ◽  
Yaghoob Parsa ◽  
Maryam Saadatmand
Keyword(s):  
Persian Gulf ◽  
Mercury Contamination ◽  
Marine Biota ◽  
Portunus Pelagicus ◽  
Penaeus Semisulcatus ◽  
Barbus Grypus ◽  
Musa Estuary ◽  
North Part ◽  
Acanthopagrus Latus ◽  
The Persian Gulf

In this study, concentrations of mercury (Hg) were analyzed in some marine biota species (fish, shrimp, and crab) from Khuzestan shore, north part of the Persian Gulf. It was also our intention to evaluate potential risks to human health associated with seafood consumption. The results indicated that concentrations of Hg in the fish and crustacean were different among the species and tissues. Liver in fish and hepatopancreas in crustacean exhibited higher Hg concentration than the other tissues. The highest concentration of Hg was detected in Acanthopagrus latus liver (1.37 µg/g), followed by Labeo rohita (0.87 µg/g), Johnius belangerii (0.79 µg/g), and Barbus grypus (0.69 µg/g), respectively. Also the highest Hg concentrations were detected in shrimp species, Penaeus semisulcatus hepatopancreas (0.95 µg/g), followed by blue crab Portunus pelagicus (0.76 µg/g) and Metapenaues affinis (0.64 µg/g), respectively. The comparison indicated that benthic species were more contaminated than were other pelagic species. The results indicated that highest concentrations of Hg between different stations were detected in Musa estuary. The Hg concentration in all species were low than standards, expect in A. latus and P. semisulcatus collected from Musa estuary (S4). The variation in Hg levels among the species is likely to have resulted from metal bioavailability, changes in tissue composition, habitat,s and locations.

Stock-recruitment relationships of the tiger prawns (Penaeus esculentus and Penaeus semisulcatus) in the Australian northern prawn fishery

1996 ◽  
Vol 47 (1) ◽  
pp. 87 ◽  
Author(s):  
YG Wang ◽  
D Die
Keyword(s):  
Population Model ◽  
Fishing Effort ◽  
Maximum Sustainable Yield ◽  
Production Model ◽  
Commercial Catch ◽  
Penaeus Semisulcatus ◽  
Spawning Stock ◽  
Tiger Prawn ◽  
Stock Recruitment ◽  
Northern Prawn Fishery

This paper investigates the stock-recruitment and equilibrium yield dynamics for the two species of tiger prawns (Penaeus esculentus and Penaeus semisulcatus) in Australia's most productive prawn fishery: the Northern Prawn Fishery. Commercial trawl logbooks for 1970-93 and research surveys are used to develop population models for these prawns. A population model that incorporates continuous recruitment is developed. Annual spawning stock and recruitment indices are then estimated from the population model. Spawning stock indices represent the abundance of female prawns that are likely to spawn; recruitment indices represent the abundance of all prawns less than a certain size. The relationships between spawning stock and subsequent recruitment (SRR), between recruitment and subsequent spawning stock (RSR), and between recruitment and commercial catch were estimated through maximum-likelihood models that incorporated autoregressive terms. Yield as a function of fishing effort was estimated by constraining to equilibrium the SRR and RSR. The resulting production model was then used to determine maximum sustainable yield (MSY) and its corresponding fishing effort (fMSY). Long-term yield estimates for the two tiger prawn species range between 3700 and 5300 t. The fishing effort at present is close to the level that should produce MSY for both species of tiger prawns. However, current landings, recruitment and spawning stock are below the equilibrium values predicted by the models. This may be because of uncertainty in the spawning stock-recruitment relationships, a change in carrying capacity, biased estimates of fishing effort, unreliable catch statistics, or simplistic assumptions about stock structure. Although our predictions of tiger prawn yields are uncertain, management will soon have to consider new measures to counteract the effects of future increases in fishing effort.

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