Maternal transfer of polycyclic aromatic hydrocarbons in an endangered elasmobranch, the Brazilian guitarfish

Martins, Mariana F.; Costa, Patrícia Gomes; Bianchini, Adalto

doi:10.1016/j.chemosphere.2020.128275

Cited by 17 publications

(6 citation statements)

References 47 publications

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“…For example, Crk‐l expression is affected by BPAs, BFRs, and PCBs, and Anxa1 is upregulated in response to PAH exposure in sea turtles as a response to increased production of reactive oxygen species (Cocci et al., 2019 ). As predators, heavy metals, PCBs, and other persistent organic pollutants can bioaccumulate in elasmobranch tissues, potentially disrupting critical processes such as metabolism, immune function, and reproduction, although pollutant levels in sawfish tissues have not been reported (Hamers et al., 2006 ; Martins et al., 2021 ; Tiktak et al., 2020 ). Characterizing how sawfish pollutant‐interacting genes may be differentially affected by these compounds could shed light on toxicological risks and may help identify biomarkers for pollutant‐induced stress (Cullen et al., 2019 ).…”

Section: Discussionmentioning

confidence: 99%

Gene expression, evolution, and the genetics of electrosensing in the smalltooth sawfish, Pristis pectinata

Jarva,

Phillips,

Von Eiff

et al. 2024

Ecology and Evolution

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Sawfishes (Pristidae) are large, highly threatened rays named for their tooth‐studded rostrum, which is used for prey sensing and capture. Of all five species, the smalltooth sawfish, Pristis pectinata, has experienced the greatest decline in range, currently found in only ~20% of its historic range. To better understand the genetic underpinnings of these taxonomically and morphologically unique animals, we collected transcriptomic data from several tissue types, mapped them to the recently completed reference genome, and contrasted the patterns observed with comparable data from other elasmobranchs. Evidence of positive selection was detected in 79 genes in P. pectinata, several of which are involved in growth factor/receptor tyrosine kinase signaling and body symmetry and may be related to the unique morphology of sawfishes. Changes in these genes may impact cellular responses to environmental conditions such as temperature, dissolved oxygen, and salinity. Data acquired also allow for examination of the molecular components of P. pectinata electrosensory systems, which are highly developed in sawfishes and have likely been influential in their evolutionary success.

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Section: Discussionmentioning

confidence: 99%

Gene expression, evolution, and the genetics of electrosensing in the smalltooth sawfish, Pristis pectinata

Jarva,

Phillips,

Von Eiff

et al. 2024

Ecology and Evolution

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“…While the primary means of exposure to LMW PAHs for aquatic organisms is aqueous due to their solubility, there is also growing evidence that maternal transfer of contaminants to their offspring can be a source of exposure (Martins et al, 2021). Aqueous exposure can occur both through ventilation in the gills (Birdsall et al, 2001), and via diffusion through their skin (Landrum and Stubblefild, 1991), but there is also research that points to sediment as potentially the more important exposure route.…”

Section: Exposure Routes and Effects Of Pahs On Aquatic Organismsmentioning

confidence: 99%

Polycyclic aromatic hydrocarbons in terrestrial and aquatic environments following wildfire: a review

et al. 2023

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Wildfires are a natural landscape disturbance in many climates and forest types, but the cumulative impact of human-caused climate change, historical fire management and suppression, and changing species diversity in forests has led to an increase in the size and/or severity of wildfires in certain regions across the globe. There are a significant number of research studies on the effects of wildfire on human health, forest ecology, hydrology, and the physical, chemical, and biological properties of soils. However, research on the impact of wildfire on watersheds including toxicity in aquatic organisms, water chemistry, and fluvial sediment quality is less extensive, focusing primarily on water quality indicators such as nutrients and sediment flux. Recent research has shown that wildfires contribute to the environment significant amounts of polycyclic aromatic hydrocarbons (PAHs), which are compounds produced during the incomplete combustion of organic material, and are known to be toxic and mutagenic compounds. The primary objective of this paper is to review the recent literature that pertains to the contamination of surface waters and sediments, and source apportionment of wildfire-derived PAHs to determine where research gaps remain. Additional objectives are to assess the use of molecular ratios to apportion PAH sources, and finally, to create a roadmap for future studies in designing and conducting research that seeks to determine sources of wildfire-derived PAHs in water and sediment.

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“…For example, Crk-l expression is affected by BPAs, BFRs, and PCBs, and Anxa1 is upregulated in response to PAH exposure in sea turtles as a response to increased production of reactive oxygen species 43 . Cadmium, PCBs, and other persistent organic pollutants can bioaccumulate in elasmobranch tissues, and may disrupt critical processes such as metabolism, immune function, and reproduction, though pollutant levels in sawfish tissues have not been reported [44][45][46] . Future research should identify contaminant levels in sawfish tissues and document sources of these pollutants in habitats where P. pectinata reside and may be re-establishing.…”

Section: Implications Of Genetic Changes In Sawfishesmentioning

confidence: 99%

Gene Expression and Evolution in the Smalltooth Sawfish,Pristis pectinata

Jarva

Phillips

Eiff

et al. 2023

Preprint

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Sawfishes (Pristidae) are large, highly threatened rays named for their tooth-studded rostrum, which is used for prey sensing and capture. Of all five species, the smalltooth sawfish, Pristis pectinata, has experienced the greatest decline in range, currently found in only ~20% of its historic range. To better understand the genetic underpinnings of these taxonomically and morphologically unique animals, we collected transcriptomic data from several tissue types, mapped them to the recently completed reference genome and contrasted the patterns observed with comparable data from other elasmobranchs. Evidence of positive selection was detected in 79 genes in P. pectinata, several of which are involved in growth factor/receptor tyrosine kinase signaling and specification of organ symmetry, suggesting a role in morphogenesis. Data acquired also allow for examination of the molecular components of P. pectinata electrosensory systems, which are highly developed in sawfishes and have likely been influential in their evolutionary success.

show abstract

Maternal transfer of polycyclic aromatic hydrocarbons in an endangered elasmobranch, the Brazilian guitarfish

Cited by 17 publications

References 47 publications

Gene expression, evolution, and the genetics of electrosensing in the smalltooth sawfish, Pristis pectinata

Gene expression, evolution, and the genetics of electrosensing in the smalltooth sawfish, Pristis pectinata

Polycyclic aromatic hydrocarbons in terrestrial and aquatic environments following wildfire: a review

Gene Expression and Evolution in the Smalltooth Sawfish,Pristis pectinata

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