Journal article
Thermal dependency of burrowing in three species within the bivalve genus Laternula: A latitudinal comparison
SA Morley, KS Tan, RW Day, SM Martin, HO Pörtner, LS Peck
Marine Biology | SPRINGER HEIDELBERG | Published : 2009
Abstract
The upper thermal limits for burrowing and survival were compared with micro-habitat temperature for anomalodesmatan clams: Laternula elliptica (Antarctica, 67°S); Laternula recta, (temperate Australia, 38°S) and Laternula truncata (tropical Singapore, 1°N). Lethal limits (LT50) were higher than burrowing limits (BT50) in L. elliptica (7.5-9.0 and 2.2°C) and L. recta (winter, 32.8-36.8 and 31.1-32.8°C) but the same range for L. truncata (33.0-35.0 and 33.4-34.9°C). L. elliptica and L. truncata had a BT50 0.4 and 2.4-3.9°C, respectively, above their maximum experienced temperature. L. recta, which experience solar heating during midday low tides, had a BT50 0.7-2.4°C below and a range for LT5..
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Awarded by Natural Environment Research Council
Funding Acknowledgements
This research was funded by NERC core funding to the BAS Bioreach/Bioflame program, the Antarctic Funding Initiative (AFI2/34) and A* Star proposal (SERC project no. 0821010024). We thank the Biodiversity Centre and Sungei Buloh Wetland Reserve (National Parks Board Singapore) and Zoology Department, University of Melbourne for facilitating this project. Antarctic scientific diving was supported by the NERC National Scientific Diving Facility. Pete Rothery provided expert statistical advice. The comments of Pete Convey and two anonymous reviewers improved this manuscript. All experiments comply with the current laws of the countries in which they were conducted.