TY - JOUR
T1 - Optimizing harvest time through absolute and relative growth of the black clam, chionista fluctifraga, cultivated in the intertidal along the southeastern coast of the gulf of california
AU - Góngora-Gómez, Andrés Martín
AU - Acosta-Campos, María José
AU - Navarro-Chávez, María Fernanda
AU - Rodríguez-González, Hervey
AU - Villanueva-Fonseca, Lizeth Carolina
AU - Villanueva-Fonseca, Brenda Paulina
AU - García-Ulloa, Manuel I.I.
AU - Hernández-Sepúlveda, Juan Antonio
AU - García-Ulloa, Manuel
N1 - Publisher Copyright:
© 2022, Central Fisheries Research Inst. All rights reserved.
PY - 2022
Y1 - 2022
N2 - The shell height-body weight relationship of the black clam Chionista fluctifraga cultivated in the intertidal of the southeastern Gulf of California, was evaluated for the first time, to improve the knowledge in determining its harvesting time. Clam seeds (n=900,000; 6.1±1.9 mm) were produced in the laboratory. The culture was divided into pre-fattening in racks on the bottom (2 months) and fattening directly in the bottom (16 months) from May 2018 to October 2019. Each month, 60 (n=1080) clams were randomly selected to stablish the morphometric relationship between shell height (SH) and body weight (BW). The growth rate (mm/d and g/d) was recorded. The SH-BW Interaction in both cultivation phases showed positive allometry. SH in pre-fattening and fattening registered a growth rate of 0.072 and 0.058 mm/d, respectively. In fattening, the interaction BW-SH displayed a high coefficient of determination (R2=0.99). A final survival rate of 90% was obtained. The results yielded the equations that describe the relative growth of C. fluctifraga for the fattening stage. A harvesting time after 10 months of fattening in the intertidal zone is stablished to reach the commercial size (35 mm, SH).
AB - The shell height-body weight relationship of the black clam Chionista fluctifraga cultivated in the intertidal of the southeastern Gulf of California, was evaluated for the first time, to improve the knowledge in determining its harvesting time. Clam seeds (n=900,000; 6.1±1.9 mm) were produced in the laboratory. The culture was divided into pre-fattening in racks on the bottom (2 months) and fattening directly in the bottom (16 months) from May 2018 to October 2019. Each month, 60 (n=1080) clams were randomly selected to stablish the morphometric relationship between shell height (SH) and body weight (BW). The growth rate (mm/d and g/d) was recorded. The SH-BW Interaction in both cultivation phases showed positive allometry. SH in pre-fattening and fattening registered a growth rate of 0.072 and 0.058 mm/d, respectively. In fattening, the interaction BW-SH displayed a high coefficient of determination (R2=0.99). A final survival rate of 90% was obtained. The results yielded the equations that describe the relative growth of C. fluctifraga for the fattening stage. A harvesting time after 10 months of fattening in the intertidal zone is stablished to reach the commercial size (35 mm, SH).
KW - Molluscan aquaculture
KW - Morphometric relationships
KW - Relative growth
KW - Venus clam
UR - http://www.scopus.com/inward/record.url?scp=85116198969&partnerID=8YFLogxK
U2 - 10.4194/TRJFAS19537
DO - 10.4194/TRJFAS19537
M3 - Artículo
AN - SCOPUS:85116198969
SN - 1303-2712
VL - 22
JO - Turkish Journal of Fisheries and Aquatic Sciences
JF - Turkish Journal of Fisheries and Aquatic Sciences
IS - 2
M1 - TRJFAS19537
ER -