Rapid morphological change in multiple cichlid ecotypes following the damming of a major clearwater river in Brazil

Gilbert, Michelle C; Akama, Alberto; Fernandes, Cristina Cox; Albertson, R. Craig

doi:10.1111/eva.13080

Cited by 18 publications

(10 citation statements)

References 170 publications

(196 reference statements)

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“…Rawlings et al (2021) similarly reported patterns, with lake dwelling round gobies having deeper bodies; however, those authors found no differences in dorsal head shape when comparing individuals sampled among habitats. Morphological distinctions between lake a stream habitats have been similarly observed in other fish species, including the red shiner (Cyprinella lutrensis, Akin & Geheber, 2020;Franssen, 2011) and six cichlid species (Gilbert et al, 2020). The most common morphological change in those cases was a streamlining of body shape, as we observed with the reduction in body depth for CC round gobies; however, head shape from the dorsal perspective was not evaluated in any of the cited studies.…”

Section: Between-population Preservation Effectsmentioning

confidence: 59%

“…For instance, a selective advantage for increased dispersal ability for colonizing species has led to rapid evolution in morphology, including for wing size in birds (Berthouly-Salazar et al, 2012), foot size in rodents (Forsman et al, 2011), and bone structure and size in cane toad (Hudson et al, 2016). For fish, body shape changes in response to environmental transitions between stream and lake habitats have been observed in several taxa, although the general patterns of those changes are not always consistent (Akin & Geheber, 2020;Franssen, 2011;Gilbert et al, 2020).…”

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confidence: 99%

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Quantifying nonlinear temporal effects of ethanol preservation on round goby (Neogobius melanostomus) anatomical traits

Lorencen

Homola

Robinson

et al. 2021

Journal of Morphology

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Geometric morphometrics provides a powerful means of evaluating differences in phenotypic traits among specimens. However, inferences of trait variability can be confounded when measurements are based on preserved samples. We evaluated effects of ethanol preservation on morphology over a 22-week time period for a Laurentian Great Lakes invasive fish, round goby (Neogobius melanostomus, Pallas 1814), using sets of 17 lateral and six dorsal landmarks. We tested whether ethanol preservation affected the magnitude of inter-population variation between individuals collected from lake and river habitats. Generalized least square regression determined that length did not significantly vary through the preservation time series for fish from either population, while mass decreased significantly. Body shape variation was summarized using principal component analysis, which revealed that most preservation-associated changes occurred in the first 14 days. The lateral shape experienced a large magnitude change during the first 24 h in ethanol then only minor changes for the remainder of the study. The dorsal shape began to revert to pre-preservation measurements about 14 days following preservation. Additionally, differences in shape were apparent between the two populations throughout the experiment; however, the magnitude of differences between populations varied depending on whether dorsal or lateral landmarks were considered. Our study demonstrates that tissue responses to ethanol preservation can be more complex than a simple loss of mass, resulting in difficult to predict consequences for geometric morphometric analyses, including variable responses depending on the anatomical region being analyzed.

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Section: Between-population Preservation Effectsmentioning

confidence: 59%

mentioning

confidence: 99%

Quantifying nonlinear temporal effects of ethanol preservation on round goby (Neogobius melanostomus) anatomical traits

Lorencen

Homola

Robinson

et al. 2021

Journal of Morphology

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“…Furthermore, the specimens analyzed come from dams on the principal course of the Grijalva River. Notably, there is evidence of environmental changes and reductions in gene flow being caused by dam construction, which may induce rapid morphological modifications in fish (Michel et al 2008;Franssen 2011;Perazzo et al 2019;Gilbert et al 2020). Additionally, while the Grijalva and Usumacinta basins share some biological and ecological characteristics, each basin has an independent biogeographical history (Elías et al 2021).…”

Section: Discussionmentioning

confidence: 99%

Intraspecific morphological variation in shads, Dorosoma anale and D. petenense (Actinopterygii: Clupeiformes: Clupeidae), in the Mexican Grijalva and Usumacinta river basins

Macossay-Cortez¹,

Rodiles‐Hernández²,

González‐Díaz³

et al. 2022

AIeP

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Historical hydrological changes and the environmental characteristics of northern Middle America have promoted diversification and determined the distribution of fishes in the Grijalva and Usumacinta river basins of Mexico. In several taxa with wide distributions, cryptic diversity has been identified through molecular and morphological analyses. This study evaluated the intraspecific morphological variation of Dorosoma anale Meek, 1904 and Dorosoma petenense (Günther, 1867) along the Grijalva and Usumacinta river basins through geometric morphometric and linear biometric analyses. Little intraspecific differentiation was detected for either species. However, differences were identified between populations in the Grijalva basin and those from the upper Usumacinta River basins with respect to body height, head size, pelvic fin position, and anal fin size. The phenotypic expression of these attributes appears to be closely related to habitat type and geographic isolation. The morphological differences within D. petenense support the molecular hypothesis of two lineages existing in the Usumacinta River basin.

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“…Not all collections, for example, span a sufficient length of time to draw statistically robust comparisons between reference and altered states. The scarcity of reference collections has been a notable limitation of all before‐after studies so far undertaken on eco‐evolutionary responses of fish to impoundment (Cureton II & Broughton, 2014; Geladi et al., 2019; Gilbert et al., 2020). Notably, stronger inferences could have been drawn had pre‐ and post‐impoundment collections at the Claiborne site spanned similar lengths of time.…”

Section: Discussionmentioning

confidence: 99%

“…Gaining insight into the tempo of phenotypic change has proven to be more challenging in part because of the limited availability of historical collections that include decadal‐long time series of specimens obtained prior to and following dam construction. To our knowledge, only two studies (Geladi et al., 2019; Gilbert et al., 2020) have examined specimens collected before and after dam construction, but in both studies comparisons were limited to a single pair of time intervals (i.e. between a pre‐ and post‐impoundment collection), precluding the study of temporal characteristics of morphological change.…”

Section: Introductionmentioning

confidence: 99%

Chronosequence of morphological change in a stream fish following impoundment

et al. 2021

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Water impoundment is among the most prevalent and potent forms of anthropogenic environmental modification worldwide. Flow modification can drive morphological changes in riverine species that persist after dam closure, but little is known about the tempo and trajectory of phenotypic responses to impoundment. Through geometric morphometric analysis of natural history collections from behind Claiborne Lock and Dam (i.e. in Claiborne Lake reservoir) and nearby Chilatchee Creek (Alabama River Basin, Alabama, U.S.A.), we reconstructed multidecadal chronosequences of morphological change in a stream fish (Cyprinella venusta Girard) to characterise phenotypic responses to impoundment and unrestricted flow. We then conducted cross‐correlation analysis of hydrological and morphological time series to determine whether morphological responses to impoundment are consistent with expected outcomes of evolution, phenotypic plasticity, or some combination thereof. We found evidence of marked phenotypic change shortly after impoundment. Within a year of dam closure, individuals from Claiborne Lake exhibited a reduction in head size, an increase in body depth, and a decline in the length of the dorsal fin base, with further responses becoming apparent c. 6 years thereafter. The morphology of individuals from the nearby stream consistently differed from individuals in the reservoir. We found that fish from Chilatchee Creek exhibited gradual directional shifts and morphological fluctuations over time, which differed from patterns of change observed in C. venusta from Claiborne Lake. There also were indications of multidecadal lags at both sites, probably reflecting common responses to periodic climatic variation that were mitigated by site‐specific differences in physiography and ecology. Our findings are consistent with the hypothesis that impoundment can elicit punctuated responses attributable to within‐generational phenotypic change and rapid evolution over as few as two generations. Our findings also indicate that hydrological variation in unrestricted streams can elicit pronounced shifts in body shape, suggesting that space‐for‐time substitutions may not effectively capture the nature of responses to flow modification. Additional investigations based on more extensive and complete chronosequences would further illustrate the value of natural history collections and offer more insight into the mechanistic basis of biotic responses to environmental change.

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Rapid morphological change in multiple cichlid ecotypes following the damming of a major clearwater river in Brazil

Cited by 18 publications

References 170 publications

Quantifying nonlinear temporal effects of ethanol preservation on round goby (Neogobius melanostomus) anatomical traits

Quantifying nonlinear temporal effects of ethanol preservation on round goby (Neogobius melanostomus) anatomical traits

Intraspecific morphological variation in shads, Dorosoma anale and D. petenense (Actinopterygii: Clupeiformes: Clupeidae), in the Mexican Grijalva and Usumacinta river basins

Chronosequence of morphological change in a stream fish following impoundment

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Rapid morphological change in multiple cichlid ecotypes following the damming of a major clearwater river in Brazil

Cited by 18 publications

References 170 publications

Quantifying nonlinear temporal effects of ethanol preservation on round goby (Neogobius melanostomus) anatomical traits

Quantifying nonlinear temporal effects of ethanol preservation on round goby (Neogobius melanostomus) anatomical traits

﻿Intraspecific morphological variation in shads, Dorosoma anale and D. petenense (Actinopterygii: Clupeiformes: Clupeidae), in the Mexican Grijalva and Usumacinta river basins

Chronosequence of morphological change in a stream fish following impoundment

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Intraspecific morphological variation in shads, Dorosoma anale and D. petenense (Actinopterygii: Clupeiformes: Clupeidae), in the Mexican Grijalva and Usumacinta river basins