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Within a single population of hawksbill sea turtles (Eretmochelys imbricata), we found a behavioral polymorphism for maternal nest site choice with respect to beach microhabitat characteristics. Some females preferred to nest in littoral forest and in places with overstory vegetation cover, and others preferred to nest in more open, deforested areas. Nest site choice was consistent within and between nesting seasons two years apart. This was not a result of females simply returning to the same location along the shoreline; beach sections used by individual turtles varied between seasons. Nest site choice was not influenced by changes in beach environment (e.g., beach width and foliage cover) or by changes in females' reproductive output (e.g., clutch size), suggesting that fidelity to particular microhabitats is a major determinant of the observed nesting patterns. Because hawksbills exhibit temperature-dependent sex determination, if the behavioral polymorphism in nest site choice has a genetic basis, as is plausible, then this would have implications for sex ratio evolution and offspring survival. By taking an individual-based approach to the study of maternal behavior we reveal previously overlooked individual variation and hope to provide some impetus for more detailed studies of nest site choice. 相似文献
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Fathy Mahmoud Abdelwahab Abdelbasir Sabah Mohamed Hassan Saad Sayed Kamel Ayman Helmy Rayan Diaa 《Journal of Material Cycles and Waste Management》2021,23(3):1090-1101
Journal of Material Cycles and Waste Management - In this study, a mechanochemical activation technique to effectually extract lead from the funnel glass of cathode ray tube (CRT) is proposed. A... 相似文献
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Abdelbasir Sabah M. Hassan Saad S. M. Kamel Ayman H. El-Nasr Rania Seif 《Environmental science and pollution research international》2018,25(17):16533-16547
Environmental Science and Pollution Research - The increasing use of electrical and electronic equipment leads to a huge generation of electronic waste (e-waste). It is the fastest growing waste... 相似文献
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Ghasemi Mohammad Hadi Neekzad Nariman Ajdari Farshad Boorboor Kowsari Elaheh Ramakrishna Seeram 《Environmental science and pollution research international》2021,28(32):43074-43101
Environmental Science and Pollution Research - Since plastic waste pollution is a severe environmental concern in modern life, the demand for recycling poly(ethylene terephthalate) (PET) has... 相似文献
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Determination of acaricide residues in saudi arabian honey and beeswax using solid phase extraction and gas chromatography 总被引:1,自引:0,他引:1
Determination of acaricide residues of flumethrin, tau-fluvalinate, coumaphos, and amitraz in honey and beeswax was carried out using a rapid extraction method utilizing C-18 SPE cartridges and an analytical method utilizing GC with ECD, NPD, and MSD detectors for the four acaricides. Recovery percentages from the extraction method ranged from 90-102%, while the minimum detection levels ranged from 0.01-0.05 mg/kg for the acaricides. Nine of the 21 analyzed samples were found to be contaminated with the acaricides tau-fluvalinate and coumaphos. Neither flumethrin nor amitraz was detected in any of the honey or wax samples. Coumaphos was found only in honey samples in which two samples exceeded the tolerance levels set by EPA and EC regulations. It has not been detected in beeswax. Five honey samples and eight beeswax samples were found to be contaminated with tau-fluvalinate. One of the wax samples was contaminated with a relatively high residue of tau-fluvalinate and contained above 10 mg/kg. 相似文献
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Abd El-Maksoud Eman M. Lebda Mohamed A. Hashem Aml E. Taha Nabil M. Kamel Maher A. 《Environmental science and pollution research international》2019,26(25):25844-25854
Environmental Science and Pollution Research - Silver nanoparticles (AgNPs) are noble metal nanoparticles, due to their good physicochemical properties, which have been exploited in biological... 相似文献
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El-Sayed Amr Aleya Lotfi Kamel Mohamed 《Environmental science and pollution research international》2021,28(36):49343-49361
Environmental Science and Pollution Research - The direct/indirect responsibility of the gut microbiome in disease induction in and outside the digestive tract is well studied. These results are... 相似文献
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El-Sayed Amr Abdel-Daim Mohamed M. Kamel Mohamed 《Environmental science and pollution research international》2021,28(23):28825-28830
Environmental Science and Pollution Research - 相似文献