Phenotypic responses to oil pollution in a poeciliid fish

Santi, Francesco; Vella, Emily T.; Jeffress, Katherine; Deacon, Amy E.; Riesch, Rüdiger

doi:10.1016/j.envpol.2021.118023

Cited by 6 publications

(7 citation statements)

References 51 publications

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“…These localities include a natural asphalt lake (Pitch Lake), several oil‐polluted sites, and unpolluted ponds, ditches, and streams. The native‐range specimens were dissected as part of life‐history analyses (Santi et al, 2021) and gut‐content analysis (D. Lucion & R. Riesch, unpubl. data), while we assessed cannibalism in the invasive‐range specimens using the x‐ray method described above.…”

Section: Methodsmentioning

confidence: 99%

“…We examined 292 adult Trinidadian guppies ( P . reticulata ) from 12 populations in their native range on Trinidad and 185 adult guppies from three populations in O'ahu, Hawaii where they were introduced approximately 100 years ago (Brock, 1960; Rosenthal et al, 2021) (Table ; see Santi et al, 2021). These localities include a natural asphalt lake (Pitch Lake), several oil‐polluted sites, and unpolluted ponds, ditches, and streams.…”

Section: Methodsmentioning

confidence: 99%

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Resource competition explains rare cannibalism in the wild in livebearing fishes

Riesch

Araújo

Bumgarner

et al. 2022

Ecology and Evolution

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Cannibalism, the act of preying on and consuming a conspecific, is taxonomically widespread, and putatively important in the wild, particularly in teleost fishes. Nonetheless, most studies of cannibalism in fishes have been performed in the laboratory. Here, we test four predictions for the evolution of cannibalism by conducting one of the largest assessments of cannibalism in the wild to date coupled with a mesocosm experiment. Focusing on mosquitofishes and guppies, we examined 17 species (11,946 individuals) across 189 populations in the wild, spanning both native and invasive ranges and including disparate types of habitats. We found cannibalism to be quite rare in the wild: most populations and species showed no evidence of cannibalism, and the prevalence of cannibalism was typically less than 5% within populations when it occurred. Most victims were juveniles (94%; only half of these appeared to have been newborn offspring), with the remaining 6% of victims being adult males. Females exhibited more cannibalism than males, but this was only partially explained by their larger body size, suggesting greater energetic requirements of reproduction likely play a role as well. We found no evidence that dispersal‐limited environments had a lower prevalence of cannibalism, but prevalence was greater in populations with higher conspecific densities, suggesting that more intense resource competition drives cannibalistic behavior. Supporting this conclusion, our mesocosm experiment revealed that cannibalism prevalence increased with higher conspecific density and lower resource levels but was not associated with juvenile density or strongly influenced by predation risk. We suggest that cannibalism in livebearing fishes is rare in the wild because preying on conspecifics is energetically costly and only becomes worth the effort when competition for other food is intense. Due to the artificially reduced cost of capturing conspecifics within confined spaces, cannibalism in captive settings can be much more frequent.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Resource competition explains rare cannibalism in the wild in livebearing fishes

Riesch

Araújo

Bumgarner

et al. 2022

Ecology and Evolution

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“…1,2 The efficient separation and reuse of oily wastewater is a requirement of environmentally sustainable development. [3][4][5] Currently, oily wastewater can be treated by many traditional methods such as chemical technology, biodegradation and physical adsorption, but the main problems are complex treatment process, high energy consumption and sometimes secondary pollution. Membrane separation technology is an effective technology to separate oil-water emulsion for its easy operation, low energy consumption and high separation efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…The large amounts of oil‐containing wastewater have become a major environmental threat 1,2 . The efficient separation and reuse of oily wastewater is a requirement of environmentally sustainable development 3–5 . Currently, oily wastewater can be treated by many traditional methods such as chemical technology, biodegradation and physical adsorption, but the main problems are complex treatment process, high energy consumption and sometimes secondary pollution.…”

Section: Introductionmentioning

confidence: 99%

Hydrophilic modification of PVDF membranes for oily water separation with enhanced anti‐fouling performance

Kan

Zhang

Ren

et al. 2023

J of Applied Polymer Sci

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The main purpose of this work is to improve the hydrophilicity and antifouling properties of hydrophobic polyvinylidene fluoride (PVDF) microfiltration membranes through modification. Pyrogallol (PG), polyethyleneimine (PEI), and (3-chloropropyl) trimethoxysilane (CTS) formed a stable hydrophilic network by Michael addition/Schiff reaction in alkaline solution Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) were used to characterize the surface chemical composition, surface and cross-section morphology of the membrane. In addition, the properties of the membrane were tested systematically. The asprepared PVDF-PG/PEI/CTS membranes showed a smaller water contact angle down to 21.1± 4.8 . The pure water flux of the modified membrane increased significantly by about 18 folds, from 377.0 ± 61.0 to 6745.0 L m À2 h À1 , the separation efficiency for the four types of oil-in-water emulsions were all greater than 98.8%. In addition, the modified membrane showed high stability under various conditions of acidity, weak alkalinity and high salt content, showing great potential in the actual treatment of oily wastewater.

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“…Fish populations can be distributed over extensive geographical areas characterized by distinctive environmental characteristics (e.g., temperature, salinity, depth, habitat and currents), which together with the challenges related to food availability and predators can exert influence over significant demographic aspects, thereby affecting the dynamics of the populations including reproductive patterns, fecundity and lifespan [1][2][3]. In addition, other factors, such as fishing pressure, anthropic pollution, habitat destruction and climate change, can also affect the abundance and distribution of fish species and consequently fish stocks dynamics [4][5][6]. Understanding population structure is, therefore, an important component of fisheries management as it allows to effectively estimate stock-wise population abundance, determine how each stock responds to fisheries exploitation or environmental changes and the potential impacts on related and dependent species, thereby ensuring species sustainability [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Chelidonichthys lucerna (Linnaeus, 1758) Population Structure in the Northeast Atlantic Inferred from Landmark-Based Body Morphometry

Ferreira,

Schroeder,

Mugerza

et al. 2023

Biology

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The study of geometric morphometrics among stocks has proven to be a valuable tool in delineating fish spatial distributions and discriminating distinct population units. Variations in fish body morphology can be linked to genetic factors or to phenotypic adaptability in response to environmental variables. The tub gurnard (Chelidonichthys lucerna) is a demersal species that usually lives in the bottom of the continental shelf, being widely distributed along the northeast Atlantic, Mediterranean and Black seas. Worldwide interest in the species has increased since 2006, when ICES recognized its potential for commercial exploitation. However, despite its broad geographic occurrence, to date, research on C. lucerna population structure at large spatial scales is still lacking. In this paper, body geometric morphometrics, using a landmark-based truss network, was applied in order to discriminate C. lucerna populations caught in three different fishery grounds areas along the northeast Atlantic: Conwy Bay (United Kingdom), Biscay Bay (Spain) and Matosinhos (Portugal). The results obtained in this study revealed a high overall relocation success (95%) of samples to their original locations, thus demonstrating the existence of significant regional differences and indicating that we are dealing with different fish population units. Moreover, the data revealed a partial overlap between individuals from Spain and United Kingdom, suggesting that in geographically distant areas these populations may inhabit similar environments. However, to corroborate these findings, future works using a holistic approach with alternative and complimentary stock assessment tools (e.g., genetic and phenotypic natural tags) are highly recommended.

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Phenotypic responses to oil pollution in a poeciliid fish

Cited by 6 publications

References 51 publications

Resource competition explains rare cannibalism in the wild in livebearing fishes

Resource competition explains rare cannibalism in the wild in livebearing fishes

Hydrophilic modification of PVDF membranes for oily water separation with enhanced anti‐fouling performance

Chelidonichthys lucerna (Linnaeus, 1758) Population Structure in the Northeast Atlantic Inferred from Landmark-Based Body Morphometry

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