Population dynamics of the tropical oyster Magallana bilineata (Mollusca, Bivalvia, Ostreidae) in Mengkabong Bay, Tuaran, Malaysia

Doinsing, Joanna W.; Ransangan, Julian

doi:10.1016/j.aaf.2022.04.005

Cited by 3 publications

(4 citation statements)

References 37 publications

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“…However, more research on its population dynamics is needed for sustainable stock management (Doinsing & Ransangan, 2022) Temperature fluctuations can influence metabolic rates and growth patterns, while variations in salinity can impact osmoregulation and physiological wellbeing. Additionally, the pH range plays a significant role in shell development for oysters (Yang & Min, 2019).…”

Section: Discussionmentioning

confidence: 99%

Growth rate of farmed Mangrove oysters (Magallana bilineata) at Laucala Bay, Suva, Fiji

Vanukon,

Dehm,

Pickering

et al. 2023

Journal. Aquaculture. Science.

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The cultivation of oysters has a significant historical background in the South Pacific region. The cultivation of pearls has been a significant source of livelihood for numerous island nations. Despite the significant cultural, dietary, and subsistence value of bivalve molluscs among Pacific Islanders, there has been limited advancement in the aquaculture of edible oysters in To enable a comprehensive assessment of the viability of cultivating edible oysters in Fiji, an estimation was conducted pertaining to the growth rate of mangrove oysters Magallana bilineata. A total of 105 oyster spat were cultured in Laucala Bay, Suva, Fiji, over the course of one year, from January 25th, 2021 to January 26th, 2022. The investigation documented exponential growth in oysters, with measurements of 87.3 ± 1.0 mm in length, 67.4 ± 0.7 mm in width, 49.8 ± 0.6 mm in depth, and 104.90 ± 22.6 g in weight. The findings of the study indicated the occurrence of positive isometric growth in relations to weight, length, width, and depth. The observed survival rate was 94%. The growth rates observed in oyster farming in Fiji exhibit similarities to those documented in other geographical locations, thereby providing a favourable indication for the progress of oyster aquaculture in the region.

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Section: Discussionmentioning

confidence: 99%

Growth rate of farmed Mangrove oysters (Magallana bilineata) at Laucala Bay, Suva, Fiji

Vanukon,

Dehm,

Pickering

et al. 2023

Journal. Aquaculture. Science.

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“…The maximum potential longevity is estimated using the following equation (Doinsing & Ransangan, 2022; Pauly & Munro, 1984; Song et al, 2017):

{t}_{\mathrm{max}}=3/K

…”

Section: Methodsmentioning

confidence: 99%

Life history and population ecology ofRadix swinhoei(Lymnaeidae) in nearshore regions of a hypereutrophic plateau lake

Zhang

Song

et al. 2022

Ecology and Evolution

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Accurate assessment of life history and population ecology of widespread species in ultra‐eutrophic freshwater lakes is a prerequisite for understanding the mechanisms by which widespread species respond to eutrophication. Freshwater pulmonate ( Radix swinhoei ) is widespread and abundant in many eutrophic water bodies in Asia. Despite its key roles in eutrophic lake systems, the information on life history and population ecology of R. swinhoei is lacking, especially in ultra‐eutrophic freshwater plateau lakes. Here, we conducted a 1‐year survey of R. swinhoei with monthly collections to measure the life history traits (life span and growth), annual secondary production, and population size structure of R. swinhoei in nearshore regions with a high seasonally variation of nutrients in Lake Dianchi, a typic hypereutrophic plateau lake in Southwest China. Our results showed that R. swinhoei had the highest biomass in autumn and had the lowest in winter. Its maximum potential life span was 2.5 years, with three recruitment periods (November, March, and July) within a year. Its annual secondary production and P/B ratio were 137.19 g WW/m 2 and 16.05, respectively. Redundancy analysis showed that eutrophication‐related environmental factors had weak correlations with population size structure of R. swinhoei . Our results suggested that R. swinhoei is a typical r‐strategist with high secondary production and thrive in eutrophic environment. Our study can help better understand the mechanisms for widespread species to survive eutrophication and could also be relevant for biodiversity conservation and management of eutrophic ecosystems.

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“…Magallana bilineata is a commercially significant species in Malaysia (Nor Idayu et al, 2015), primarily found in the South China Sea, Andaman Sea, and Gulf of Thailand (Yoosukh and Duangdee, 1999), with production restricted mainly to Malaysia and the Philippines (Suzana, 2011). M. bilineata is native to the east coast of Peninsular Malaysia, particularly in Kelantan and Terengganu, along the coast of Sabah (Doinsing and Ransangan, 2022), and a few sites in Sarawak (Zulfigar and Aileen, 2000). Mengkabong Bay, Tuaran, Sabah is an important site for M. bilineata aquaculture (Doinsing and Ransangan, 2022), but its reproductive pattern in the area is poorly understood.…”

Section: Introductionmentioning

confidence: 99%

“…M. bilineata is native to the east coast of Peninsular Malaysia, particularly in Kelantan and Terengganu, along the coast of Sabah (Doinsing and Ransangan, 2022), and a few sites in Sarawak (Zulfigar and Aileen, 2000). Mengkabong Bay, Tuaran, Sabah is an important site for M. bilineata aquaculture (Doinsing and Ransangan, 2022), but its reproductive pattern in the area is poorly understood. Reproduction and settlement processes play a vital role in establishing sustainable populations (McFarland and Hare, 2018).…”

Section: Introductionmentioning

confidence: 99%

Reproductive Biology and Spawning Pattern of Oyster Magallana bilineata in Mengkabong Bay, Sabah, Malaysia

Doinsing,

Al-Azad,

Ransangan

2024

Croatian Journal of Fisheries

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Magallana bilineata is a commercially important oyster species in Malaysia. Despite its economic significance, the biology and ecology of this species, particularly its reproductive cycle, are poorly understood in the region. Therefore, this study aimed to investigate the reproductive cycle of M. bilineata in Mengkabong Bay, Tuaran, Sabah and its correlation with environmental factors. A total of 105 oyster specimens were collected and examined to determine the sex ratio, gonad developmental stages, maturity index (MI), and condition index (CI). The results revealed a sex ratio of 1:2.36 (♂:♀) in the oyster population of the bay, with a significantly higher proportion of females (P < 0.05). Hermaphroditism was detected in 1.90% of the samples. M. bilineata was found to spawn throughout most months in the bay, with the highest MI and CI values recorded in November 2019 when most oysters were in mature or maturing stages. Salinity was found to be the primary factor influencing male gonad maturation, while temperature was the primary factor influencing female gonad maturation. Understanding the reproductive biology of this species is crucial for predicting its future survival and facilitating assisted spawning and hatchery spat production, thereby ensuring the conservation and sustainability of the oyster fishery in Malaysia.

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Population dynamics of the tropical oyster Magallana bilineata (Mollusca, Bivalvia, Ostreidae) in Mengkabong Bay, Tuaran, Malaysia

Cited by 3 publications

References 37 publications

Growth rate of farmed Mangrove oysters (Magallana bilineata) at Laucala Bay, Suva, Fiji

Growth rate of farmed Mangrove oysters (Magallana bilineata) at Laucala Bay, Suva, Fiji

Life history and population ecology ofRadix swinhoei(Lymnaeidae) in nearshore regions of a hypereutrophic plateau lake

Reproductive Biology and Spawning Pattern of Oyster Magallana bilineata in Mengkabong Bay, Sabah, Malaysia

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