Trace elements influence the hatching success and emergence of Caretta caretta and Chelonia mydas

Souza, Namany Lourpen Nascimento; Carneiro, Maria Tereza Weitzel Dias; Pimentel, Elisângela F.; Frossard, Alexandra; Freire, Jordana Borini; Endringer, Denise Coutinho; Júnior, Paulo Dias Ferreira

doi:10.1016/j.jtemb.2018.06.007

Cited by 19 publications

(10 citation statements)

References 27 publications

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“…In general, the values recorded were close to those found in other works on C. caretta in the Mediterranean [2,3,10,23,24] and do not seem to be high enough to affect the health of sea turtles, as noted by Storelli and Marcotrigiano [35]. The highest concentration of barium, found in the yolk, was higher than those in Florida [30,31] and in Brazil [37].…”

Section: Discussionsupporting

confidence: 85%

Impact of Heavy Metals in Eggs and Tissues of C. caretta along the Sicilian Coast (Mediterranean Sea)

et al. 2022

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In this study we compared the heavy metal concentration found in different tissues and eggs of the loggerhead sea turtle and evaluated the potential ecotoxicological risk for this important species. Eighteen heavy metal elements were determined in different tissues (liver, gonads, fat, kidney, heart, brain, and spleen) of nine individuals of Caretta caretta found stranded along the coasts of Messina (Sicily, Italy) and in the shell and yolk of six eggs from the island of Linosa (Sicily, Italy). For the analysis of the heavy metals, we used the analytical procedures in accordance with the EPA 200.8 method supplemented by EPA 6020b with three replicates for each measurement. The elements analysed showed different organotropism even if the liver showed higher levels of bioaccumulation. Turtles’ tissues showed the highest values of iron in the liver, followed by zinc in the heart and arsenic in the kidney. Regarding eggs, zinc, iron, and barium were dominant in the yolk and iron, boron, and copper in the eggshell. From the analyses carried out the worrying levels of arsenic and cadmium in the kidneys and liver of C. caretta raise questions about the risk related to exposure to these non-essential elements. This study highlights the importance of multi-element biomonitoring by increasing knowledge on the biodistribution of 18 heavy metals and the related potential risks for C. caretta. We also exploring for the first time the presence of several heavy metals in the eggs and their possible implication for the survival of the species.

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Section: Discussionsupporting

confidence: 85%

Impact of Heavy Metals in Eggs and Tissues of C. caretta along the Sicilian Coast (Mediterranean Sea)

et al. 2022

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“…Strontium exhibited the highest concentrations in loggerhead turtle composite egg samples. Only a few studies have measured Sr concentrations in sea turtle eggs [ 17 , 25 , 56 ]. Similar levels to those found here have been reported from loggerhead turtle eggs collected along the eastern coast of South Africa, Indian Ocean (median value 41 mg kg −1 w.w.) [ 17 ], which are significantly higher than those reported from Cape Verde (median value 3.89 mg kg −1 w.w.), one of the major loggerhead turtle rookeries in the Atlantic Ocean [ 25 ].…”

Section: Resultsmentioning

confidence: 99%

“…Early juveniles feed predominantly on epipelagic animals, while later juveniles and adults prefer benthic prey, although they possess high foraging flexibility and may opportunistically feed on the available food resources both in the water column and on the sea bottom [ 18 ]. Variable concentrations of polychlorobiphenyls, dioxins, organochlorinated pesticides, and toxic and potentially toxic elements have been found in tissues, organs, and fluids of this species, but their effects on health parameters are still not sufficiently understood [ 12 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ]. Contaminant levels in nesting females and eggs are of particular concern because of their potential impact on embryonic development, hatching success, and early life phases [ 27 , 28 , 29 , 30 , 31 , 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

Trace Elements and Persistent Organic Pollutants in Unhatched Loggerhead Turtle Eggs from an Emerging Nesting Site along the Southwestern Coasts of Italy, Western Mediterranean Sea

Esposito

Canzanella

Iaccarino

et al. 2023

Animals

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Marine pollution is one of the major threats affecting loggerhead turtles, which due to their long life span, highly migratory behavior, and carnivorous diet, may be exposed to elevated levels of toxic elements throughout their life. The transfer of chemicals from mothers to their offspring is of particular conservation concern because it may affect embryonic development and hatching success. In this study, the concentrations of 16 toxic and potentially toxic trace elements, 6 indicator polychlorinated biphenyls (PCBs), and organochlorine pesticide residues (OCPs) were determined in 138 eggs from 46 loggerhead turtle nests laid during the 2021 nesting season in Campania, Italy, western Mediterranean Sea. The possible impact of pollutant levels on hatching success and early embryonic death was also investigated. Trace element analysis was performed using an ICP-MS, except for mercury, which was determined using a Direct Mercury Analyzer® (DMA). PCBs and OCPs were analyzed with high-resolution gas chromatography coupled with high-resolution mass spectrometry (HRGC-HRMS) and gas chromatography tandem quadrupole mass spectrometry GC-MS /MS, respectively. The concentrations of essential elements in the eggs were higher than those of non-essential elements. In addition, the highly chlorinated PCBs (153, 138, and 180) contributed the most to the total PCBs, while OCPs were not detected. No correlations were found between contaminant concentrations and reproductive parameters (hatching success and no obvious embryos). The results obtained suggest that the levels of contaminants found in the eggs do not affect the reproductive success of the species in the study area.

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“…Cara yang dapat dilakukan untuk memperbaiki kualitas sarang penetasan adalah dengan mengganti pasir sarang secara berkala (Bézy et al, 2015). Souza et al, (2018) berpendapat bahwa adanya logam seperti Cu pada pasir sarang berpengaruh terhadap keberhasilan penetasan penyu. Peneliti lain yang melakukan identifikasi kandungan logam menemukan adanya Mn 12.07 ppm dan Fe 149,20 ppm yang melebihi batas normal pada pasir sarang yang dikhawatirkan mengakibatkan bioakumulasi dan dapat menjadi penghambat penetasan telur penyu (Primasatya dkk., 2013).…”

Section: Hasil Dan Pembahasanunclassified

Tingkat Keberhasilan Penetasan Telur Penyu Lekang (Lepidochelys olivacea) pada Sarang Semi Alami di Pantai Boom Banyuwangi Periode Tahun 2018

et al. 2020

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Penelitian ini bertujuan mengetahui persentase keberhasilan penetasan telur penyu lekang (Lepidoehelys olivacea) pada sarang semi alami Banyuwangi sea Turtle Foundation (BSTF) di Pantai Boom Banyuwangi. Data diperoleh dari observasi dan rekap data milik BSTF. Persentase keberhasilan penetasan diperoleh dari total telur penyu lekang selama periode bertelur tahun 2018. Persentase penetasan telur penyu lekang pada sarang semi alami BSTF periode tahun 2018 adalah 75%. Total telur penyu yang diinkubasikan adalah 4495 butir, total telur yang menetas adalah 3392 butir, dan jumlah telur yang gagal menetas adalah 1103 butir.

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Trace elements influence the hatching success and emergence of Caretta caretta and Chelonia mydas

Cited by 19 publications

References 27 publications

Impact of Heavy Metals in Eggs and Tissues of C. caretta along the Sicilian Coast (Mediterranean Sea)

Impact of Heavy Metals in Eggs and Tissues of C. caretta along the Sicilian Coast (Mediterranean Sea)

Trace Elements and Persistent Organic Pollutants in Unhatched Loggerhead Turtle Eggs from an Emerging Nesting Site along the Southwestern Coasts of Italy, Western Mediterranean Sea

Tingkat Keberhasilan Penetasan Telur Penyu Lekang (Lepidochelys olivacea) pada Sarang Semi Alami di Pantai Boom Banyuwangi Periode Tahun 2018

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