Vulnerability of juvenile hermit crabs to reduced seawater pH and shading

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

StandardStandard

Vulnerability of juvenile hermit crabs to reduced seawater pH and shading. / Ragagnin, Marilia; McCarthy, Ian; Fernandez, Wellington et al.
Yn: Marine Environmental Research, Cyfrol 142, 11.2018, t. 130-140.

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

HarvardHarvard

Ragagnin, M, McCarthy, I, Fernandez, W, Tschiptschin, A & Turra, A 2018, 'Vulnerability of juvenile hermit crabs to reduced seawater pH and shading', Marine Environmental Research, cyfrol. 142, tt. 130-140. https://doi.org/10.1016/j.marenvres.2018.10.001

APA

Ragagnin, M., McCarthy, I., Fernandez, W., Tschiptschin, A., & Turra, A. (2018). Vulnerability of juvenile hermit crabs to reduced seawater pH and shading. Marine Environmental Research, 142, 130-140. https://doi.org/10.1016/j.marenvres.2018.10.001

CBE

Ragagnin M, McCarthy I, Fernandez W, Tschiptschin A, Turra A. 2018. Vulnerability of juvenile hermit crabs to reduced seawater pH and shading. Marine Environmental Research. 142:130-140. https://doi.org/10.1016/j.marenvres.2018.10.001

MLA

VancouverVancouver

Ragagnin M, McCarthy I, Fernandez W, Tschiptschin A, Turra A. Vulnerability of juvenile hermit crabs to reduced seawater pH and shading. Marine Environmental Research. 2018 Tach;142:130-140. Epub 2018 Hyd 6. doi: 10.1016/j.marenvres.2018.10.001

Author

Ragagnin, Marilia ; McCarthy, Ian ; Fernandez, Wellington et al. / Vulnerability of juvenile hermit crabs to reduced seawater pH and shading. Yn: Marine Environmental Research. 2018 ; Cyfrol 142. tt. 130-140.

RIS

TY - JOUR

T1 - Vulnerability of juvenile hermit crabs to reduced seawater pH and shading

AU - Ragagnin, Marilia

AU - McCarthy, Ian

AU - Fernandez, Wellington

AU - Tschiptschin, Andre

AU - Turra, Alexander

PY - 2018/11

Y1 - 2018/11

N2 - Multiple simultaneous stressors induced by anthropogenic activities may amplify their impacts on marine organisms. The effects of ocean acidification, in combination with other anthropogenic impacts (apart from temperature) are poorly understood, especially in coastal regions. In these areas, shading caused by infrastructure development, such as harbor construction, may potentially interact with CO2-induced pH reduction and affect invertebrate populations. Here, we evaluated the effects of reduced pH (7.6) and shading (24h in darkness) on mortality, growth, calcification and displacement behavior to live predator (danger signal) and dead gastropod (resource availability signal) odors using juveniles of the hermit crab Pagurus criniticornis collected in Araçá Bay (São Paulo state, Southeastern Brazil). After a 98 day experimental period, both stressors had a significant interaction effect on mortality, and an additive effect on total growth. No difference in calcification was recorded among treatments, indicating that individuals were able to maintain calcification under reduced pH conditions. When exposed to odor of live predators, crab responses were only affected by shading. However, an interactive effect between both stressors was observed in response to gastropod odor, leading to reduced displacement behavior. This study shows how local disturbance impacts may enhance the effects of global environmental change on intertidal crustacean populations.

AB - Multiple simultaneous stressors induced by anthropogenic activities may amplify their impacts on marine organisms. The effects of ocean acidification, in combination with other anthropogenic impacts (apart from temperature) are poorly understood, especially in coastal regions. In these areas, shading caused by infrastructure development, such as harbor construction, may potentially interact with CO2-induced pH reduction and affect invertebrate populations. Here, we evaluated the effects of reduced pH (7.6) and shading (24h in darkness) on mortality, growth, calcification and displacement behavior to live predator (danger signal) and dead gastropod (resource availability signal) odors using juveniles of the hermit crab Pagurus criniticornis collected in Araçá Bay (São Paulo state, Southeastern Brazil). After a 98 day experimental period, both stressors had a significant interaction effect on mortality, and an additive effect on total growth. No difference in calcification was recorded among treatments, indicating that individuals were able to maintain calcification under reduced pH conditions. When exposed to odor of live predators, crab responses were only affected by shading. However, an interactive effect between both stressors was observed in response to gastropod odor, leading to reduced displacement behavior. This study shows how local disturbance impacts may enhance the effects of global environmental change on intertidal crustacean populations.

KW - Effects, multiple stressors, environmental changes, ocean acidification, photoperiod, Pagurus criniticornis

U2 - 10.1016/j.marenvres.2018.10.001

DO - 10.1016/j.marenvres.2018.10.001

M3 - Article

VL - 142

SP - 130

EP - 140

JO - Marine Environmental Research

JF - Marine Environmental Research

SN - 0141-1136

ER -