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The Salinity Tolerance Limits of the Adults and Early-Stage Embryos of Balanus Glandula Darwin, 1854 (Cirripedia, Thoracica)

The Salinity Tolerance Limits of the Adults and Early-Stage Embryos of Balanus Glandula Darwin,... THE SALINITY TOLERANCE LIMITS OF THE ADULTS AND EARLY-STAGE EMBRYOS OF BALANUS GLANDULA DARWIN, 1854 (CIRRIPEDIA, THORACICA) BY MARY BERGEN 1) Hopkins Marine Station of Stanford University, Pacific Grove, California, U.S.A. INTRODUCTION Under normal conditions of exposure high intertidal barnacles might well be subjected to salinity extremes due to (1) fresh water from precipitation and consequent runoff and (2) high mantle cavity salinities due to evaporation re- sulting from high midday temperatures. Some possible adaptations to such ex- tremes are known. For example, Borusk & Kreps (1929) found that B. balanoides (L.) and B. crena/us Brug. can exist for three weeks in a state of 'salt sleep', a state in which all cirral activity ceases, the opercular plates are closed, and respira- tion is maintained at a low level. Barnes & Barnes (1957) reported that B. bala- noide.r feeds normally in 60% to 90% sea water, opens but does not feed in 50% sea water, and closes its opercular plates in salinities of 25% or less. The same authors (1957) observed that B. balanoide.r exhibits a behavioral response to exposure by extruding mantle cavity water. For this reason they did not consider the question of tolerance to high http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Crustaceana Brill

The Salinity Tolerance Limits of the Adults and Early-Stage Embryos of Balanus Glandula Darwin, 1854 (Cirripedia, Thoracica)

Bergen, Mary
Crustaceana , Volume 15 (3): 229 – Jan 1, 1968
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References (3)

Publisher
Brill
Copyright
© 1968 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0011-216x
eISSN
1568-5403
DOI
10.1163/156854068X00340
Publisher site
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Abstract

THE SALINITY TOLERANCE LIMITS OF THE ADULTS AND EARLY-STAGE EMBRYOS OF BALANUS GLANDULA DARWIN, 1854 (CIRRIPEDIA, THORACICA) BY MARY BERGEN 1) Hopkins Marine Station of Stanford University, Pacific Grove, California, U.S.A. INTRODUCTION Under normal conditions of exposure high intertidal barnacles might well be subjected to salinity extremes due to (1) fresh water from precipitation and consequent runoff and (2) high mantle cavity salinities due to evaporation re- sulting from high midday temperatures. Some possible adaptations to such ex- tremes are known. For example, Borusk & Kreps (1929) found that B. balanoides (L.) and B. crena/us Brug. can exist for three weeks in a state of 'salt sleep', a state in which all cirral activity ceases, the opercular plates are closed, and respira- tion is maintained at a low level. Barnes & Barnes (1957) reported that B. bala- noide.r feeds normally in 60% to 90% sea water, opens but does not feed in 50% sea water, and closes its opercular plates in salinities of 25% or less. The same authors (1957) observed that B. balanoide.r exhibits a behavioral response to exposure by extruding mantle cavity water. For this reason they did not consider the question of tolerance to high

Journal

Crustaceana – Brill

Published: Jan 1, 1968

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