Growth and exploitation rate of <i>Anadara gubernaculum</i> (reeve, 1844) Arcidae Family in Asahan Aquatic of North Sumatra

Fauzan, Masrian; Bakti, Darma; Susetya, Ipanna Enggar; Desrita, Desrita

doi:10.1088/1755-1315/122/1/012105

Cited by 5 publications

(10 citation statements)

References 4 publications

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“…L ∞ is interpreted as the mean length of a very old species, while K is the rate at which determines how fast the species approaches its L ∞ (Sparre & Venema, 1998). The initial condition parameter (t 0 ) was estimated applying the formula used for other bivalves (Hariyadi et al, 2017;Fauzan et al, 2018;Solis et al, 2019). In theory, t 0 determines the point in time when the organism has zero length.…”

Section: Methodsmentioning

confidence: 99%

POPULATION DYNAMICS AND AQUACULTURE POTENTIAL OF THE MUD CLAM, Geloina expansa (MOUSSON, 1849) (BIVALVIA: CYRENIDAE) IN LOAY-LOBOC RIVER, BOHOL, CENTRAL PHILIPPINES

Argente¹,

Ilano²

2021

JSSM

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The status of the mud clam, Geloina expansa, an important bivalve in the artisanal fisheries of the Loay-Loboc River, was assessed using monthly shell length frequency data (October, 2012 to January, 2015 to estimate population parameters. Growth parameters derived were L ∞ = 91.35 mm, K = 0.75 yr -1 and t 0 = -0.16. Predicted L max was 90.39 mm. Estimated growth rates showed fast growth for the first two years. Longevity is approximately 6.1 years. Length-weight relationship showed a positive allometric growth (r 2 = 0.94). The estimated total mortality (Z) was 2.89 yr -1 . Natural (M) and fishing (F) mortalities estimates were 0.90 yr -1 and 1.99 yr -1 , respectively. Estimated exploitation rate (E = 0.69) was higher than the maximum sustainable exploitation (E max = 0.41). Two annual recruitment peaks occurred during the months of December to February and July to August. Monthly condition index (CI) suggested that spawning is year-round. It appeared that the variations in CI of G. expansa in the river was influenced by the water temperature and salinity (r² = 0.54; P < 0.0001). These biological information may be used for aquaculture technique development for G. expansa in central Philippines which will aid in the conservation and management of natural stocks.

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Section: Methodsmentioning

confidence: 99%

POPULATION DYNAMICS AND AQUACULTURE POTENTIAL OF THE MUD CLAM, Geloina expansa (MOUSSON, 1849) (BIVALVIA: CYRENIDAE) IN LOAY-LOBOC RIVER, BOHOL, CENTRAL PHILIPPINES

Argente¹,

Ilano²

2021

JSSM

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“…Kendari Bay which receives allochthonous and autochthonous inputs in the form of household waste and weathering of organic matter in the mangroves has the potential to accumulate chemical content that can change water quality which in turn contributes to the natural death of blood clams, especially after the occurrence of rains such as in Modiolus modulaides in Kendari Bay (Nasrawati et al 2017). There are no studies on the size, structure, growth, mortality, and exploitation rates of blood clams in Kendari Bay, but similar studies have been carried out in other locations, such as on Pacific Coast (Lucero-Rincón et al 2013), Asahan North Sumatra (Fauzan et al 2018), Sunda Strait (Komala and Zahara 2020), Penang Island, West Coast of Malaysia (Fauzan et al 2018), North Arabian Sea (Jahangir et al 2013), andChone Estuary, Ecuador (Panta-Velez et al 2020). Therefore, this study aims to determine the population dynamics, particularly the size, growth, mortality, and exploitation level of blood clams in Kendari Bay, Southeast Sulawesi.…”

Section: Introductionmentioning

confidence: 99%

Population dynamics of blood clams Tegillarca granosa in Kendari Bay, Southeast Sulawesi, Indonesia

et al. 2022

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Abstract. Bahtiar, Purnama MF, Kasim M, Ishak E. 2022. Population dynamics of blood clams Tegillarca granosa in Kendari Bay, Southeast Sulawesi, Indonesia. Biodiversitas 23: 5084-5092. Blood clams (Tegillarca granosa) are bivalves found in the intertidal areas of ??Kendari Bay which are subjected to ecological stresses. Therefore, this study aims to determine the population dynamics of blood clams in Kendari Bay, Southeast Sulawesi, in terms of their size structure, growth, mortality, and exploitation level from March 2018-February 2019. The samples were collected with scoop nets in ten 5x5 m2 transects. Water quality parameters were monitored every sampling period. The length of the shells was measured using a caliper with an accuracy of 0.05 mm. The data were processed using the Bhattacharya method, inverse von Bertalanffy model, length-converted catch curve, and Pauly's empirical data, respectively. All of the methods were accommodated in the FiSAT II version 3.0 program. Results showed that the blood clams were divided into 2-3 size categories, namely young adult, adult, and old age, where the most dominant was the adult size group. The growth pattern of the samples was based on the equation Lt = [6.67-(6.67-0.025)] e-0.72t. The majority of the blood clams were distributed in the 1-2 years age group. Natural, fishing and total mortalities (Z) of the blood clams were 2.18 yr-1, 0.29yr-1, and 3.09yr-1, respectively, with an exploitation rate (E) of 0.29 (underexploited).

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“…Secara umum, kematian total (alami dan penangkapan) juga ditemukan lebih tinggi bila dibandingkan dengan kerang yang sama di tempat lain (Rohmah & Muhsoni, 2020;Admodisastro et al 2021;Amin et al 2009 dan kerang sejenis Meretrix casta (Laxmilatha, 2013). Demikian halnya kematian total kerang tahu di muara Sungai Kambu juga lebih tinggi dibandingkan dengan kerang lain di antaranya Anadara gubernaculum (Fauzan et al 2018), Potamocorbula faba (Hariyadi et al 2017), Geloina expansa (Yahya et al 2018), walaupun lebih rendah dibandingkan dengan Batissa violacea var. celebensis di muara Sungai Lasolo (Bahtiar et al 2016) (Tabel 1).…”

Section: Kematianunclassified

The Population Dynamics of the Exploited White Shells (Meretrix meretrix) at the Kambu River Estuary, Southeast Sulawesi

Bahtiar¹,

Pratama

Purnama

et al. 2022

JPPT

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White shells is one of the types of shellfish that is exploited by the community around the Kambu River estuary whose population dynamics is not known certainty. This study aims to determine the population dynamics of white shells in the Kambu River estuary, Southeast Sulawesi. This research was carried out for six months from August 2021 to January 2022. white shells were collected using garok in all parts of the waters. The shell length was measured using a caliper with an accuracy of 0.05 cm. Data on population structure, growth and mortality of clams was analyzed using FiSAT II version 3,0 software. The results showed that the population structure of white shells were dominated by one size group (young adult) which were distributed. The growth parameters of white shells consisted of asymptotic length (L∞) and growth coefficient (K) were 58,91 mm and 1.1, respectively. Natural mortality (M) of white shells at an annual mean temperature of 28oC was 1,59 yr-1, while fishing mortality (F) and total mortality (Z) of white shells were 3,16 yr-1 and 4,75 yr-1, respectively. The white shells were in an overexploitation condition with an exploitation level (E) of 0,67 yr-1.

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Growth and exploitation rate of Anadara gubernaculum (reeve, 1844) Arcidae Family in Asahan Aquatic of North Sumatra

Cited by 5 publications

References 4 publications

POPULATION DYNAMICS AND AQUACULTURE POTENTIAL OF THE MUD CLAM, Geloina expansa (MOUSSON, 1849) (BIVALVIA: CYRENIDAE) IN LOAY-LOBOC RIVER, BOHOL, CENTRAL PHILIPPINES

POPULATION DYNAMICS AND AQUACULTURE POTENTIAL OF THE MUD CLAM, Geloina expansa (MOUSSON, 1849) (BIVALVIA: CYRENIDAE) IN LOAY-LOBOC RIVER, BOHOL, CENTRAL PHILIPPINES

Population dynamics of blood clams Tegillarca granosa in Kendari Bay, Southeast Sulawesi, Indonesia

The Population Dynamics of the Exploited White Shells (Meretrix meretrix) at the Kambu River Estuary, Southeast Sulawesi

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