PMID- 36668776
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230201
IS  - 2305-6304 (Electronic)
IS  - 2305-6304 (Linking)
VI  - 11
IP  - 1
DP  - 2023 Jan 3
TI  - Hawksbill Sea Turtle (Eretmochelys imbricata) Blood and Eggs Organochlorine 
      Pesticides Concentrations and Embryonic Development in a Nesting Area (Yucatan 
      Peninsula, Mexico).
LID - 10.3390/toxics11010050 [doi]
LID - 50
AB  - Environmental contaminants with chemical origins, such as organochlorine 
      pesticides (OCPs) have major impacts on the health of marine animals, including 
      sea turtles, due to the bioaccumulation of those substances by transference 
      throughout the food chain. The effects of environmental pollution on the health 
      of marine turtles are very important for management strategies and conservation. 
      During recent decades, the south Gulf of Mexico and the Yucatan Peninsula have 
      suffered from increasingly frequent disturbances from continental landmasses, 
      river systems, urban wastewater runoff, port areas, tourism, industrial 
      activities, pesticides from agricultural use, and other pollutants, such as 
      metals, persistent organic pollutants (POPs) and hydrocarbons (from the oil 
      industry activities), which contaminate water and sediments and worsen the 
      environmental quality of the marine ecosystem in this region. In this study, we 
      assessed the concentrations of OCPs in the blood and eggs of 60 hawksbill turtles 
      (Eretmochelys imbricata) nesting at the Punta Xen turtle camp, and their effects 
      on the nesting population's reproductive performance: specifically, maternal 
      transfer and embryonic development were analyzed. Hematologic characteristics, 
      including packed cell volume, white blood cell count, red blood cell count, and 
      haemoglobin levels, and plasma chemistry values, including creatinine, blood urea 
      nitrogen, uric acid, triglyceride, total cholesterol and glucose, were also 
      measured. The general health of the turtles in this study, as well as their 
      levels of urea, serum creatinine, glucose, uric, acid, cholesterol, and 
      triglyceride, fell within normal ranges and was similar to other normal values, 
      which could indicate the turtles' good energy levels and body conditions for 
      nest-building activity, with all of the turtles able to successfully come ashore 
      to nest. All the same, the obtained results also indicate that OCPs affect the 
      nesting and reproductive performance of the hawksbill turtles, as well as their 
      fertility and the development of the population of eggs and reproductive 
      performance, specifically in terms of maternal transference and embryonic 
      development. There were significant differences in the concentrations of OCPs 
      (SigmaHCHs and SigmaDienes) between maternal blood and eggs, indicating that these 
      chemicals are transferred from nesting females to eggs and, ultimately, to 
      hatchlings. OCPs may, therefore, have an effect on the health and reproductive 
      performance of hawksbill turtles, both in terms of their fertility and egg 
      development. Conservation strategies need to be species-specific, due to 
      differences in feeding, and address the reasons for any decline, focusing on 
      regional assessments. Thus, accurate and comparable monitoring data are 
      necessary, which requires the standardization of monitoring protocols.
FAU - Salvarani, Patricia I
AU  - Salvarani PI
AD  - Department of Biology and the Centre for Environmental and Marine Studies 
      (CESAM), University of Aveiro, 3810-193 Aveiro, Portugal.
FAU - Vieira, Luis R
AU  - Vieira LR
AUID- ORCID: 0000-0002-8218-619X
AD  - Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), 
      University of Porto, Terminal de Cruzeiros do Porto de Leixoes, Av. General 
      Norton de Matos s/n, 2250-208 Matosinhos, Portugal.
AD  - School of Medicine and Biomedical Sciences (ICBAS), University of Porto, Rua de 
      Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
FAU - Rendon-von Osten, Jaime
AU  - Rendon-von Osten J
AUID- ORCID: 0000-0002-3585-0211
AD  - Instituto Epomex, Universidad Autonoma de Campeche, Av Augustin de Melgar y Juan 
      de la Barrera s/n, Campeche 24039, Mexico.
FAU - Morgado, Fernando
AU  - Morgado F
AD  - Department of Biology and the Centre for Environmental and Marine Studies 
      (CESAM), University of Aveiro, 3810-193 Aveiro, Portugal.
LA  - eng
PT  - Journal Article
DEP - 20230103
PL  - Switzerland
TA  - Toxics
JT  - Toxics
JID - 101639637
PMC - PMC9865186
OTO - NOTNLM
OT  - Mexico
OT  - Yucatan Peninsula
OT  - hawksbill turtles (Eretmochelys imbricata)
OT  - maternal transfer
OT  - nesting populations
OT  - organochlorine pesticides
OT  - sea turtles
COIS- The authors declare no conflict of interest.
EDAT- 2023/01/21 06:00
MHDA- 2023/01/21 06:01
PMCR- 2023/01/03
CRDT- 2023/01/20 15:31
PHST- 2022/11/22 00:00 [received]
PHST- 2022/12/21 00:00 [revised]
PHST- 2022/12/26 00:00 [accepted]
PHST- 2023/01/20 15:31 [entrez]
PHST- 2023/01/21 06:00 [pubmed]
PHST- 2023/01/21 06:01 [medline]
PHST- 2023/01/03 00:00 [pmc-release]
AID - toxics11010050 [pii]
AID - toxics-11-00050 [pii]
AID - 10.3390/toxics11010050 [doi]
PST - epublish
SO  - Toxics. 2023 Jan 3;11(1):50. doi: 10.3390/toxics11010050.