Growth of two Antarctic lamellibranchs: Adamussium colbecki and Laternula elliptica

Ralph, R.; Maxwell, Jamie

doi:10.1007/bf00391569

Cited by 79 publications

(55 citation statements)

References 13 publications

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“…Both animals have a comparable ecology as sessile suspension feeders. They dwell buried in soft sediments, siphon particles from the sediment water interface and occupy the same niche in the respective ecosystems (Ralph and Maxwell, 1977). In contrast to the cold stenothermal L. elliptica, M. arenaria is a eurythermal intertidal and subtidal species with a large thermal tolerance range, which spans from as low as 4 8C in winter to 18 8C during low tides on hot summer days (Anderson, 1978;Pedersen, 1992).…”

Section: Discussionmentioning

confidence: 99%

Production of reactive oxygen species by isolated mitochondria of the Antarctic bivalve Laternula elliptica (King and Broderip) under heat stress

Heise

Puntarulo

Pörtner

et al. 2003

Comparative Biochemistry and Physiology Part C: Toxicology &

144

117

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Section: Discussionmentioning

confidence: 99%

Production of reactive oxygen species by isolated mitochondria of the Antarctic bivalve Laternula elliptica (King and Broderip) under heat stress

Heise

Puntarulo

Pörtner

et al. 2003

Comparative Biochemistry and Physiology Part C: Toxicology &

144

117

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“…The growth rings visible on the surface of the shells were assumed to be layed down annually as in other Antarctic and sub-Antarctic mollusc species (see e.g. Ralph & Maxwell 1977, Richardson 1979, Picken 1980. For growth ring analysis, shells were cleaned of organic matter using a 5 % solution of NaOC1, then washed in 96 % ethanol and dried at 60 "C. Growth rings were counted under a stereo microscope by submersing the shells in tert-butyl methyl ether.…”

Section: Methodsmentioning

confidence: 99%

Growth, reproduction and production of Lissarca notorcadensis (Bivalvia. Philobryidae) in the Weddel Sea, Antarctica

Brey¹,

Hain²

1992

Mar. Ecol. Prog. Ser.

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Growth, reproduction and production of the epizoic bivalve Lissarca notorcadensjs were compared between 2 regions of the Weddell Sea, the South Orkney and South Shetland shelves (north of 63" S) and the southeastern continental shelf (south of 70' S). Growth lines on the shell surface were interpreted as annual growth marks. Von Bertalanffy growth functions were fitted to length-at-age data for the northern region (L, = 12.140 mm. K = 0.085 yr-', t o = -1.477 yr) and for the southern region (L, = 9.802 mm, K = 0.112 yr-l, t o = -1.247 yr). Female gonad production was estimated from the number of embryos brooded per female, embryo mass at release and the fraction of females in the population. Somatic production was calculated from weight specific growth rates. Annual somatic and gonad production/biomass (P/B) ratios were 0.316 and 0.151 (north), and 0.305 and 0.132 (south), respectively. These values are lower than P/B ratios of boreal mollusc populations of comparable mean body mass.

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“…It has a circumAntarctic distribution, and much of its general ecology, including feeding, routine metabolism, and growth rate, have been previously investigated (Ralph and Maxwell 1977a;Ahn 1994Ahn , 1997Brey and Mackensen 1997;Ahn and Shim 1998). Also, tissue volumes are large enough to allow extraction of sufficient mitochondria to allow accurate measurement of mitochondrial function, and the animal is large enough to facilitate the collection of hemolymph samples for oxygen analysis.…”

Section: Introductionmentioning

confidence: 99%

Metabolic Demand, Oxygen Supply, and Critical Temperatures in the Antarctic BivalveLaternula elliptica

Peck

Pörtner²,

Hardewig³

2002

Physiological and Biochemical Zoology

148

116

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Oxygen consumption ( ), heartbeat rate and form, and cirMo 2 culating hemolymph oxygen content were measured in relation to temperature in the large Antarctic infaunal bivalve Laternula elliptica. After elevations in temperature from 0Њ to 3Њ, 6Њ, and then 9ЊC, and heartbeat rate rose to new levels, whereaṡ Mo 2 maximum circulating hemolymph oxygen content fell. At 0ЊC, was 19.6 mmol O 2 h Ϫ1 for a standard animal of 2-g tissuė Mo 2 ash-free dry mass, which equates to a 8.95-g tissue dry-mass or 58.4-g tissue wet-mass animal. Elevation of metabolism following temperature change had acute Q 10 values between 4.1 and 5, whereas acclimated figures declined from 3.4 (between 0Њ and 3ЊC) to 2.2 (3Њ-6ЊC) and 1.9 (6Њ-9ЊC). Heartbeat rate showed no acclimation following temperature elevations, with Q 10 values of 3.9, 3.2, and 4.3, respectively. Circulating hemolymph oxygen content declined from 0Њ to 3Њ and 6ЊC but stayed at a constant Po 2 (73-78 mmHg) and constant proportion (∼50%) of the oxygen content of the ambient water. At 9ЊC, and heartbeat rate both peaked at values 3.3 times thosė Mo 2 measured at 0ЊC, which may indicate aerobic scope in this species. After these peaks, both measures declined rapidly over the ensuing 5 d to the lowest measured in the study, and the bivalves began to die. Hemolymph oxygen content fell dramatically at 9ЊC to values between 2% and 12% of ambient water O 2 content and had a maximum Po 2 of around 20 mmHg. These data indicate an experimental upper lethal temperature of 9ЊC and a critical temperature, where a long-term switch to

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Growth of two Antarctic lamellibranchs: Adamussium colbecki and Laternula elliptica

Cited by 79 publications

References 13 publications

Production of reactive oxygen species by isolated mitochondria of the Antarctic bivalve Laternula elliptica (King and Broderip) under heat stress

Production of reactive oxygen species by isolated mitochondria of the Antarctic bivalve Laternula elliptica (King and Broderip) under heat stress

Growth, reproduction and production of Lissarca notorcadensis (Bivalvia. Philobryidae) in the Weddel Sea, Antarctica

Metabolic Demand, Oxygen Supply, and Critical Temperatures in the Antarctic BivalveLaternula elliptica

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