Biological Aspects of Diopatra claparedii Grube, 1878 (Onuphidae, Polychaeta) Maintained at Different Salinity Levels

Diopatra claparedii Grube, 1878, is a tubicolous polychaete species widely used as fishing bait by local anglers in Cilacap, Central Java, Indonesia. Little is known about its biological characteristics despite its ecological and economic importance. This study aimed to examine the survival rate, gr...

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Main Authors: Eko Setio Wibowo, Atang Atang, Eko Setiyono, Hana Hana, Sorta Basar Ida Simanjuntak, Untung Susilo, Phuping Sucharitakul, Yuni Apriyanti, Joko Pamungkas
Format: Article
Language:English
Published: Diponegoro University; Association of Indonesian Coastal Management Experts 2025-03-01
Series:Ilmu Kelautan
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Online Access:https://ejournal.undip.ac.id/index.php/ijms/article/view/60038
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author Eko Setio Wibowo
Atang Atang
Eko Setiyono
Hana Hana
Sorta Basar Ida Simanjuntak
Untung Susilo
Phuping Sucharitakul
Yuni Apriyanti
Joko Pamungkas
author_facet Eko Setio Wibowo
Atang Atang
Eko Setiyono
Hana Hana
Sorta Basar Ida Simanjuntak
Untung Susilo
Phuping Sucharitakul
Yuni Apriyanti
Joko Pamungkas
author_sort Eko Setio Wibowo
collection DOAJ
description Diopatra claparedii Grube, 1878, is a tubicolous polychaete species widely used as fishing bait by local anglers in Cilacap, Central Java, Indonesia. Little is known about its biological characteristics despite its ecological and economic importance. This study aimed to examine the survival rate, growth, metabolic rate, and osmoregulatory capacity of D. claparedii under different salinity conditions. The experiment was conducted using plastic containers (20 × 30 × 25 cm) filled with a muddy substrate and water at four salinity levels: 10, 15, 20, and 25 ppt, with each treatment replicated five times. The results showed that the survival rate of D. claparedii ranged from 87% to 93%, while its growth varied between 0.17 and 0.58 g. The metabolic rate, measured in terms of oxygen consumption, ranged from 0.201 to 0.467 mg·g-¹·h-¹. The  osmoregulatory capacity of the worms varied between 1.26 and 1.54 mOsm·kg-¹ solvent. Statistical analysis indicated that salinity did not significantly affect survival (p> 0.05). However, it significantly influenced growth, metabolic rate, and osmoregulatory capacity (p< 0.05). The results suggested that a 15–25 ppt salinity range was more favorable for the species, with 20 ppt being the most optimal level for its maintenance and growth. This study highlights the potential for cultivating D. claparedii under controlled conditions, providing a sustainable alternative to wild harvesting. As polychaete farming has been successfully implemented in several countries, similar efforts could be applied in Indonesia to support local fisheries while conserving natural populations.
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spelling doaj-art-36fcbe77f0f145f5bb8257c747a5fb672025-08-20T02:42:12ZengDiponegoro University; Association of Indonesian Coastal Management ExpertsIlmu Kelautan0853-72912406-75982025-03-013011610.14710/ik.ijms.30.1.1-625467Biological Aspects of Diopatra claparedii Grube, 1878 (Onuphidae, Polychaeta) Maintained at Different Salinity LevelsEko Setio Wibowo0Atang Atang1Eko Setiyono2Hana Hana3Sorta Basar Ida Simanjuntak4Untung Susilo5Phuping Sucharitakul6Yuni Apriyanti7Joko Pamungkas8Faculty of Biology, Jenderal Soedirman University, IndonesiaFaculty of Biology, Jenderal Soedirman University, IndonesiaFaculty of Biology, Jenderal Soedirman University, IndonesiaFaculty of Biology, Jenderal Soedirman University, IndonesiaFaculty of Biology, Jenderal Soedirman University, IndonesiaFaculty of Biology, Jenderal Soedirman University, IndonesiaSchool of Environment, Tsinghua University, ThailandDirectorate of Scientific Collection Management, National Research and Innovation Agency, IndonesiaResearch Center for Biosystematics and Evolution, National Research and Innovation Agency, IndonesiaDiopatra claparedii Grube, 1878, is a tubicolous polychaete species widely used as fishing bait by local anglers in Cilacap, Central Java, Indonesia. Little is known about its biological characteristics despite its ecological and economic importance. This study aimed to examine the survival rate, growth, metabolic rate, and osmoregulatory capacity of D. claparedii under different salinity conditions. The experiment was conducted using plastic containers (20 × 30 × 25 cm) filled with a muddy substrate and water at four salinity levels: 10, 15, 20, and 25 ppt, with each treatment replicated five times. The results showed that the survival rate of D. claparedii ranged from 87% to 93%, while its growth varied between 0.17 and 0.58 g. The metabolic rate, measured in terms of oxygen consumption, ranged from 0.201 to 0.467 mg·g-¹·h-¹. The  osmoregulatory capacity of the worms varied between 1.26 and 1.54 mOsm·kg-¹ solvent. Statistical analysis indicated that salinity did not significantly affect survival (p> 0.05). However, it significantly influenced growth, metabolic rate, and osmoregulatory capacity (p< 0.05). The results suggested that a 15–25 ppt salinity range was more favorable for the species, with 20 ppt being the most optimal level for its maintenance and growth. This study highlights the potential for cultivating D. claparedii under controlled conditions, providing a sustainable alternative to wild harvesting. As polychaete farming has been successfully implemented in several countries, similar efforts could be applied in Indonesia to support local fisheries while conserving natural populations.https://ejournal.undip.ac.id/index.php/ijms/article/view/60038annelidadiopatra claparediimariculturemarine worms
spellingShingle Eko Setio Wibowo
Atang Atang
Eko Setiyono
Hana Hana
Sorta Basar Ida Simanjuntak
Untung Susilo
Phuping Sucharitakul
Yuni Apriyanti
Joko Pamungkas
Biological Aspects of Diopatra claparedii Grube, 1878 (Onuphidae, Polychaeta) Maintained at Different Salinity Levels
Ilmu Kelautan
annelida
diopatra claparedii
mariculture
marine worms
title Biological Aspects of Diopatra claparedii Grube, 1878 (Onuphidae, Polychaeta) Maintained at Different Salinity Levels
title_full Biological Aspects of Diopatra claparedii Grube, 1878 (Onuphidae, Polychaeta) Maintained at Different Salinity Levels
title_fullStr Biological Aspects of Diopatra claparedii Grube, 1878 (Onuphidae, Polychaeta) Maintained at Different Salinity Levels
title_full_unstemmed Biological Aspects of Diopatra claparedii Grube, 1878 (Onuphidae, Polychaeta) Maintained at Different Salinity Levels
title_short Biological Aspects of Diopatra claparedii Grube, 1878 (Onuphidae, Polychaeta) Maintained at Different Salinity Levels
title_sort biological aspects of diopatra claparedii grube 1878 onuphidae polychaeta maintained at different salinity levels
topic annelida
diopatra claparedii
mariculture
marine worms
url https://ejournal.undip.ac.id/index.php/ijms/article/view/60038
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