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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Vasquez, M. Christina Murillo, Andrea Brockmann, H. Jane Julian, David |
| Description | Country affiliation: United States Author Affiliation: Vasquez MC ( Animal Molecular and Cellular Biology Program, University of Florida, Gainesville, FL 32611-0910, USA.); Murillo A ( Department of Biology, University of Florida, Gainesville, FL 32611-8525, USA.); Brockmann HJ ( Department of Biology, University of Florida, Gainesville, FL 32611-8525, USA.); Julian D ( Animal Molecular and Cellular Biology Program, University of Florida, Gainesville, FL 32611-0910, USA Department of Biology, University of Florida, Gainesville, FL 32611-8525, USA djulian@ufl.edu.) |
| Abstract | Fertilized eggs of the American horseshoe crab, Limulus polyphemus, are buried in shallow nests above the high tide line, where they are exposed to variations in abiotic conditions during early development. Using a multiple-stressors approach, we examined whether the rate of embryonic development is affected by exposure to combinations of three factors: temperature (25, 30 and 35°C), salinity (5, 15 and 34â ppt) and ambient O2 (5%, 13% and 21% O2). Newly fertilized eggs were incubated under 27 fully factorial stressor combinations for 14â days, then allowed to recover in control conditions (30°C, 34â ppt, 21% O2) for an additional 14â days. Growth rate was measured every 2â days throughout the experiment (N=1289). We found that the effect of isolated stressors (high temperature, low salinity or low O2) reduced developmental success by up to 72% (low salinity), and that stressor combinations showed stronger effects and evidence of complex interactions. For example, low O2 had little effect individually but was lethal in combination with high temperature, and low temperature in isolation slightly decreased the rate of development but reduced the negative effects of low salinity and low O2. Development was delayed under exposure to low O2 but resumed upon return to control conditions after a 10â day lag. These data demonstrate that complex, synergistic interactions among abiotic stressors can substantially alter the development of a coastal invertebrate in ways that may not be predicted from the effects of the stressors in isolation. |
| File Format | HTM / HTML |
| ISSN | 00220949 |
| e-ISSN | 14779145 |
| Journal | Journal of Experimental Biology |
| Issue Number | Pt 15 |
| Volume Number | 218 |
| Language | English |
| Publisher | The Company of Biologists |
| Publisher Date | 2015-08-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | Open |
| Subject Keyword | Discipline Biology Horseshoe Crabs Embryology Animals Ecosystem Embryo, Nonmammalian Oxygen Metabolism Salinity Stress, Physiological Temperature Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physiology Medicine Aquatic Science Molecular Biology Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Insect Science |
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