Cage-farmed lobsters of Honda Bay (Panulirus ornatus)
Palawan, Puerto Princesa (east coast, Sulu Sea), Philippines
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- Type
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Five lobsters from a sea cage 700 m offshore, fed with local fish and molluscs; mean total Hg of 1.99 ± 0.61 mg/kg, above the European limit of 0.5 mg/kg for crustaceans. Δ199Hg/Δ201Hg of 1.36 ± 0.07: methylmercury photodegraded in the water column before entering the food web; mercury derived from bay sediments according to the authors. Cage coordinates from the authors.
δ202Hg in ‰ (per mil) Values of the same system
Standard : NIST SRM 3133
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −0.25 ± 0.08 ‰ | −0.34 / −0.15 ‰ | 5 | freeze-dried lobster meat (Lob1 to Lob5) Mean and standard deviation recalculated from 5 analyses, δ202Hg higher than in sediments, clearly positive Δ199Hg: methylmercury photodegraded then bioaccumulated. | Samaniego et al. (2026), Mercury speciation and stable isotope signatures in marine sedim… |
Δ199Hg in ‰ (per mil) Values of the same system
Standard : NIST SRM 3133
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 1.02 ± 0.12 ‰ | 0.85 / 1.16 ‰ | 5 | freeze-dried lobster meat (Lob1 to Lob5) Mean and standard deviation recalculated from 5 analyses, mean Δ199Hg/Δ201Hg of 1.36 ± 0.07, the methylmercury photodegradation slope (Bergquist and Blum, 2007). | Samaniego et al. (2026), Mercury speciation and stable isotope signatures in marine sedim… |
Deposits of the same type
- Airborne dust near the Niujiaotang mine China
- Tengchong hot spring (Yunnan) China
- Wendeng hot springs (Jiaodong) China
- Yantai hot springs (Jiaodong) China
- Weihai hot springs (Jiaodong) China
- North-West Pacific, station 1 (34.5° N 147.0° E)
- North-West Pacific, station 2 (44.0° N 155.0° E)
- North-West Pacific, station 7 (24.3° N 170.3° E)
Cite this page
IsoFind Atlas (2026). Cage-farmed lobsters of Honda Bay (Panulirus ornatus), isotope signatures. https://www.isofind.tech/isotopes/en/sites/homards-d-elevage-en-cage-de-la-baie-de-honda-panulirus-ornatus/ (accessed 2026-10-14).
@misc{isofind2026cagefarmedlobstersofhondabayp,
title = {Cage-farmed lobsters of Honda Bay (Panulirus ornatus), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/homards-d-elevage-en-cage-de-la-baie-de-honda-panulirus-ornatus/},
note = {Accessed 2026-10-14}
}Updated : 2026-10-14