scholarly journals KOMPOSISI DAN KELIMPAHAN BIVALVIA DI EKOSISTEM LAMUN PERAIRAN JUANGA KABUPATEN PULAU MOROTAI PROVINSI MALUKU UTARA

2020 ◽  
Vol 2 (1) ◽  
pp. 31
Author(s):  
Djainudin Alwi ◽  
Iswandi Wahab ◽  
Ilham Bisi
Keyword(s):  
Ostrea Lurida ◽  
Donax Trunculus ◽  
Atrina Pectinata

Secara ekologi bivalvia berperan dalam menjaga poduktifitas lingkungan. Kurangnya informasi mengenai keberadaan dan komposisi spesies dari Bivalvia tersebut, mendorong untuk dilakukan penelitian ini. Tujuan penelitian adalah untuk menganalisis komposisi dan kelimpahan spesies Bivalvia di ekosistem Lamun Desa Juanga Kecamatan Morotai Selatan, Kabupaten Pulau Morotai. Pengambilan sampel menggunakan metode kuadrant ukuran 1 x 1 meter untuk Bivalvia Epifauna, dan pipa paralon dengan diameter 10 cm untuk Bivalvia yang terdapat dalam dasar perairan (infauna). Analisis data menggunakan rumus komposisi, dan kelimpahan menggunakan rumus kelimmpahan dengan menggunakan pendekatan Excel. Hasil penelitian didapatkan sebanyak 7 spesies bivalvia yang tersebar di empat stasiun penelitian yaitu Anadara gubernculum, Donax trunculus, Dosinia dilecta, Frogum unedo, Latona cuenata, Atrina pectinata dan Ostrea lurida dengan jumlah total sebanyak 112 individu. Jumlah individu spesies bivalvia berkisar 47- 96 dengan nilai tertinggi pada adalah Anadara gubernculum pada stasiun II (96%), dan terendah di stasiun I (47%). Kesimpulan diperoleh (1) Komposisi spesies Bivalvia memiliki presentasi (absolut) yaitu Anadara gubernculum 0,74 sedangkan untuk spesies lain secara keseluruhan memiliki komposisi kategori (rendah) dengan nilai dibawah 0,23. (2) Kelimpahan individu dan kelimpahan relatif di semua stasiun yang memiliki nilai tertinggi yaitu jenis Anadara gubernculum. 

Variation in larval supply and recruitment of Ostrea lurida in the Coos Bay estuary, Oregon, USA

2016 ◽  
Vol 560 ◽  
pp. 159-171 ◽  
Author(s):  
CE Pritchard ◽  
RN Rimler ◽  
SS Rumrill ◽  
RB Emlet ◽  
AL Shanks
Keyword(s):  
Ostrea Lurida ◽  
Larval Supply ◽  
Coos Bay

Effect of acidic pH on antibacterial action of peptide isolated from Korean pen shell ( Atrina pectinata )

2011 ◽  
Vol 17 (5) ◽  
pp. 353-357 ◽  
Author(s):  
Suyeon Yoo ◽  
Jin-Young Kim ◽  
Seong-Cheol Park ◽  
Do Young Choi ◽  
Chang Ho Seo ◽  
...  
Keyword(s):  
Antibacterial Action ◽  
Acidic Ph ◽  
Pen Shell ◽  
Atrina Pectinata

Textural Characteristics might Influence Donax trunculus Shellfishing Banks Exploitability

2017 ◽  
Vol 33 (2) ◽  
pp. 87-93 ◽  
Author(s):  
Miguel Á. Nombela ◽  
Paula Diz ◽  
Edgar No Couto ◽  
Gemma Martínez
Keyword(s):  
Textural Characteristics ◽  
Donax Trunculus

Effect of diet on the lipid composition of the commercial clam Donax trunculus (Mollusca: bivalvia): sex-related differences

2011 ◽  
Vol 43 (8) ◽  
pp. 1134-1144 ◽  
Author(s):  
Inés Martínez-Pita ◽  
Ismael Hachero-Cruzado ◽  
Clara Sánchez-Lazo ◽  
Oscar Moreno
Keyword(s):  
Lipid Composition ◽  
Donax Trunculus

scholarly journals Some Aspect on the Biology of Pen Shell Atrina Pectinata (Linneaus, 1767) In Coastal Waters of Maqueda Bay, Philippines

2019 ◽  
Vol 2 (2) ◽  
Keyword(s):  
Coastal Waters ◽  
Total Mortality ◽  
Condition Index ◽  
Recruitment Pattern ◽  
Spawning Period ◽  
Growth Coefficient ◽  
Measurement And Analysis ◽  
Pen Shell ◽  
Atrina Pectinata

A Total of 379 pen shells Atrinapectinata were collected from February 2017 to January 2018 in the coastal waters of Maqueda Bay. Measurement and analysis of length and weight were done using FiSAT software. Population parameters were assessed to evaluate the stock status which includes the asymptotic length (L∞) and growth coefficient (K) to be 34.65 cm, 0.77 year−1 respectively. Specimens of A. pectinata reached a mean length of 20.98 cm. Length-weight relationship resulted to “negative allometric” 0.0462L2.6533 R2 = 0.7823; signifying pen shells growth was faster in length than on weight. The recruitment pattern was continuous over the year with one major peak during rainy season (July). In addition, the highest catch based on collected sampling date catch was during summer, which suggest as the peak season of the species in the area. Furthermore, the average catch annually of hookah diver was 17.69208. Higher condition index was recorded from April to May, September and January, indicating the high quality of pen shell meat and is recommended as the best period to harvest pen shell whereas June to August and October to December can be concluded as the spawning period of the pen shell and the ideal period to institute close season. Further analysis revealed that the pen shell was nearly facing overexploitation with the exploitation rate (E = 0.46) mainly due to lack of a minimum limit size and also due to an increase in the harvesting effort. The estimated total mortality (Z), natural mortality (M) and fishing mortality (F); 1.36 year−1, 1.01year−1 and 0.62 year−1, respectively. Using the mentioned (Z), (M), (F) and (E), the total population resulted to 84725.7 suggesting that half of the population has been exploited due to overfishing

scholarly journals The use of sea shell (Donax trunculus) powder to remove Sr(II) ions from aqueous solutions

2018 ◽  
Vol 78 (4) ◽  
pp. 827-836 ◽  
Author(s):  
Aysun Bulut ◽  
Sabriye Yusan ◽  
Sule Aytas ◽  
Senol Sert
Keyword(s):  
Aqueous Solutions ◽  
Freundlich Isotherm ◽  
Cost Effective ◽  
Mass Ratio ◽  
Sorption Equilibrium ◽  
Sorption Data ◽  
Donax Trunculus ◽  
Strontium Ion ◽  
Shell Powder ◽  
Maximum Removal

Abstract This study aimed to investigate and explore the possibility of using ground sea shell powder (Donax trunculus) (SSP) for sorption of Sr(II) ions from aqueous solutions. The maximum removal of Sr(II) removal in SSP was 60% at initial Sr(II) concentration of 25 mg/L, at pH 6.0, contact time 120 min, temperature 25 °C and volume/mass ratio equivalent to 500. Sorption data were interpreted considering the adsorption isotherms and thermodynamic parameters calculated. The maximum Sr(II) adsorption on SSP was 25.45 mg/g at pH 6.0. Freundlich isotherm and Dubinin–Radushkevich models were seen to be more compatible with the sorption equilibrium. The nature of the process was spontaneous and exothermic. The results suggest that SSP could be used as an efficient and cost-effective adsorbent to remove strontium ion.

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