100 years in the dark: Extreme longevity of Eocene bivalves from Antarctica

Devin P. Buick, Linda C Ivany

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

A combination of sclerochronologic techniques and stable isotope analysis reveals that the fossil bivalve Cucullaea raea, from the Eocene of Antarctica, regularly lived for more than a century. In addition, shell growth occurred only during the Austral winter, when food (phytoplankton) availability was limited by darkness. Although extreme longevity in modern bivalves tends to correlate with cold temperature, paleotemperature conversion of δ18O values indicates that these high-latitude fossil clams lived in relatively warm (∼ 14°C) shallow seas of the Eocene greenhouse world. Growth cessation during otherwise optimal summer conditions is inferred to reflect summer spawning and a reproductive strategy by which to increase the likelihood of larval survival in a light-stressed (and hence food stressed) setting. Long life may therefore be adaptive in a setting where the chances of reproductive success during any one spawning cycle are very low. In addition, food limitation may play a role in extending life by reducing metabolic rate and somatic growth, slowing the process of senescence (aging). The unusual life history of this fossil high-latitude, temperate-water bivalve suggests that low light and food availability, as opposed to cold temperature, may have a greater influence on molluscan growth at high latitudes than previously thought.

Original languageEnglish (US)
Pages (from-to)921-924
Number of pages4
JournalGeology
Volume32
Issue number10
DOIs
StatePublished - Oct 2004

Fingerprint

bivalve
Eocene
fossil
spawning
food limitation
food
paleotemperature
light availability
summer
senescence
food availability
reproductive strategy
reproductive success
stable isotope
life history
temperature
phytoplankton
shell
Antarctica
winter

Keywords

  • Antarctic
  • Bivalve
  • Climate
  • Life history
  • Longevity
  • Stable isotope

ASJC Scopus subject areas

  • Geology

Cite this

100 years in the dark : Extreme longevity of Eocene bivalves from Antarctica. / Buick, Devin P.; Ivany, Linda C.

In: Geology, Vol. 32, No. 10, 10.2004, p. 921-924.

Research output: Contribution to journalArticle

@article{9e94007f910f483b92af7c37ef795133,
title = "100 years in the dark: Extreme longevity of Eocene bivalves from Antarctica",
abstract = "A combination of sclerochronologic techniques and stable isotope analysis reveals that the fossil bivalve Cucullaea raea, from the Eocene of Antarctica, regularly lived for more than a century. In addition, shell growth occurred only during the Austral winter, when food (phytoplankton) availability was limited by darkness. Although extreme longevity in modern bivalves tends to correlate with cold temperature, paleotemperature conversion of δ18O values indicates that these high-latitude fossil clams lived in relatively warm (∼ 14°C) shallow seas of the Eocene greenhouse world. Growth cessation during otherwise optimal summer conditions is inferred to reflect summer spawning and a reproductive strategy by which to increase the likelihood of larval survival in a light-stressed (and hence food stressed) setting. Long life may therefore be adaptive in a setting where the chances of reproductive success during any one spawning cycle are very low. In addition, food limitation may play a role in extending life by reducing metabolic rate and somatic growth, slowing the process of senescence (aging). The unusual life history of this fossil high-latitude, temperate-water bivalve suggests that low light and food availability, as opposed to cold temperature, may have a greater influence on molluscan growth at high latitudes than previously thought.",
keywords = "Antarctic, Bivalve, Climate, Life history, Longevity, Stable isotope",
author = "Buick, {Devin P.} and Ivany, {Linda C}",
year = "2004",
month = "10",
doi = "10.1130/G20796.1",
language = "English (US)",
volume = "32",
pages = "921--924",
journal = "Geology",
issn = "0091-7613",
publisher = "Geological Society of America",
number = "10",

}

TY - JOUR

T1 - 100 years in the dark

T2 - Extreme longevity of Eocene bivalves from Antarctica

AU - Buick, Devin P.

AU - Ivany, Linda C

PY - 2004/10

Y1 - 2004/10

N2 - A combination of sclerochronologic techniques and stable isotope analysis reveals that the fossil bivalve Cucullaea raea, from the Eocene of Antarctica, regularly lived for more than a century. In addition, shell growth occurred only during the Austral winter, when food (phytoplankton) availability was limited by darkness. Although extreme longevity in modern bivalves tends to correlate with cold temperature, paleotemperature conversion of δ18O values indicates that these high-latitude fossil clams lived in relatively warm (∼ 14°C) shallow seas of the Eocene greenhouse world. Growth cessation during otherwise optimal summer conditions is inferred to reflect summer spawning and a reproductive strategy by which to increase the likelihood of larval survival in a light-stressed (and hence food stressed) setting. Long life may therefore be adaptive in a setting where the chances of reproductive success during any one spawning cycle are very low. In addition, food limitation may play a role in extending life by reducing metabolic rate and somatic growth, slowing the process of senescence (aging). The unusual life history of this fossil high-latitude, temperate-water bivalve suggests that low light and food availability, as opposed to cold temperature, may have a greater influence on molluscan growth at high latitudes than previously thought.

AB - A combination of sclerochronologic techniques and stable isotope analysis reveals that the fossil bivalve Cucullaea raea, from the Eocene of Antarctica, regularly lived for more than a century. In addition, shell growth occurred only during the Austral winter, when food (phytoplankton) availability was limited by darkness. Although extreme longevity in modern bivalves tends to correlate with cold temperature, paleotemperature conversion of δ18O values indicates that these high-latitude fossil clams lived in relatively warm (∼ 14°C) shallow seas of the Eocene greenhouse world. Growth cessation during otherwise optimal summer conditions is inferred to reflect summer spawning and a reproductive strategy by which to increase the likelihood of larval survival in a light-stressed (and hence food stressed) setting. Long life may therefore be adaptive in a setting where the chances of reproductive success during any one spawning cycle are very low. In addition, food limitation may play a role in extending life by reducing metabolic rate and somatic growth, slowing the process of senescence (aging). The unusual life history of this fossil high-latitude, temperate-water bivalve suggests that low light and food availability, as opposed to cold temperature, may have a greater influence on molluscan growth at high latitudes than previously thought.

KW - Antarctic

KW - Bivalve

KW - Climate

KW - Life history

KW - Longevity

KW - Stable isotope

UR - http://www.scopus.com/inward/record.url?scp=7444260728&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=7444260728&partnerID=8YFLogxK

U2 - 10.1130/G20796.1

DO - 10.1130/G20796.1

M3 - Article

AN - SCOPUS:7444260728

VL - 32

SP - 921

EP - 924

JO - Geology

JF - Geology

SN - 0091-7613

IS - 10

ER -