Reproductive and Early Life History of Nonindigenous Red Shiner in the Chattahoochee River Drainage, Georgia

Herrington, Steven J.; DeVries, Dennis R.

doi:10.1656/1528-7092-7.3.413

Cited by 11 publications

(9 citation statements)

References 38 publications

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“…The length of spawning season was consistent with populations from Alabama, but the maximum monthly average was slightly higher than the 8 % reported by Casten and Johnston (2008). Despite our limited data on the reproductive ecology of C. lutrensis, spawning activities in the Paluxy River appeared to correspond to populations in Georgia where spawning begins in May, peaks in June with a mean GSI of 14 %, and ends in September (Herrington and DeVries 2008). The only difference between results from our study and known GSI values was with the reproductive ecology of the C. anomalum.…”

Section: Discussionsupporting

confidence: 72%

The influence of discharge, photoperiod, and temperature on the reproductive ecology of cyprinids in the Paluxy River, Texas

Munz

Higgins

2013

Aquat Ecol

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The distributions and abundances of cyprinids in North America are declining at an alarming rate with almost half of all known species considered imperiled and in need of conservation. Much of this loss in biodiversity is a result of flow regulation and climate change, especially in streams in the southern Great Plains that are prone to large and rapid fluctuations in discharge. The overall objective of this study was to examine the influence of discharge, photoperiod, and temperature on the reproductive ecology of cyprinids in the Paluxy River, Texas. Our results support previous findings in that photoperiod and water temperature were influential in the initiation and termination of the annual reproductive season. Interannual differences in GSI for Cyprinella venusta and Notropis volucellus indicated that reproductive effort in certain cyprinids was directly linked to discharge. In 2010, mean gonadosomatic index values for C. venusta (9.60 %) and N. volucellus (9.15 %) were at least twice that of 2011 (4.61 and 3.14 %, respectively); discharge during the spawning season of 2010 averaged 1,965 cfs, whereas it averaged only 177 cfs in 2011. Indeed, yearly differences in streamflow (i.e., mean annual discharge) can significantly impact the production of ova in a variety of cyprinids, even those non-broadcast-spawning species such as C. venusta. Consequently, we suggest conservation efforts should focus on maintaining natural flow regimes to combat the overwhelming loss of cyprinid diversity, especially as water extraction and climate change continue to threaten the biodiversity of freshwater fishes.

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Section: Discussionsupporting

confidence: 72%

The influence of discharge, photoperiod, and temperature on the reproductive ecology of cyprinids in the Paluxy River, Texas

Munz

Higgins

2013

Aquat Ecol

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“…Red shiners are abundant and widespread in Atlanta metropolitan area streams like Proctor Creek (Couch et al 1995;DeVivo 1996). No evidence of persistent hybridization between red shiner and native blacktail shiner (C. venusta cercostigma) has been documented in this region, and blacktail shiners are rare in the Atlanta metropolitan area (Couch et al 1995;DeVivo 1996;Herrington 2004).…”

Section: Methodsmentioning

confidence: 99%

Reproductive isolation and the expansion of an invasive hybrid swarm

et al. 2010

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Biological invasions involving hybridization proceed according to prezygotic and postzygotic reproductive isolating mechanisms. Yet few comparisons of reproductive isolation have been carried out to understand how different mechanisms prevent or promote invasions involving hybridization. Here we present a study of prezygotic and postzygotic isolation between non-native red shiner (Cyprinella lutrensis) and native blacktail shiner (C. venusta stigmatura) from the Coosa River basin (USA) to better understand the formation and expansion of invasive hybrid swarms. We conducted spawning trials to measure mating preferences and raised broods from crosses to assay hybrid viability through early juvenile development. Females of both species were more responsive to conspecific mates, although blacktail shiner females responded more often to heterospecific mates than did red shiner females. Fecundity of red shiner females was also higher than blacktail shiner females. Heterospecific crosses resulted in lower fertilization and egg hatching rates, but we found no other evidence of inviability. Rather, we found comparatively low larval mortality of F 1 hybrids, which is suggestive of heterosis. These findings support prior inferences of assortative mating from genetic descriptions of hybridization, and that the invasion in the Coosa River is likely proceeding due to interspecific competition and intrinsic hybrid viability.

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“…Cyprinella lutrensis thrive under a wide range of ecological conditions, exhibit high fecundity and a short generation time and frequently dominate species assemblages where introduced (Hubbs 1954; Marsh‐Matthews and Matthews 2000; Marsh‐Matthews et al. 2002; Herrington and DeVries 2008; Walters et al. 2008; Blum et al.…”

Section: Introductionmentioning

confidence: 99%

Discordant introgression in a rapidly expanding hybrid swarm

Ward

Blum

Walters

et al. 2012

Evolutionary Applications

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The erosion of species boundaries can involve rapid evolutionary change. Consequently, many aspects of the process remain poorly understood, including the formation, expansion, and evolution of hybrid swarms. Biological invasions involving hybridization present exceptional opportunities to study the erosion of species boundaries because timelines of interactions and outcomes are frequently well known. Here, we examined clinal variation across codominant and maternally inherited genetic markers as well as phenotypic traits to characterize the expansion and evolution of a hybrid swarm between native Cyprinella venusta and invasive Cyprinella lutrensis minnows. Discordant introgression of phenotype, microsatellite multilocus genotype, and mtDNA haplotype indicates that the observable expansion of the C. venusta × C. lutrensis hybrid swarm is a false invasion front. Both parental and hybrid individuals closely resembling C. lutrensis are numerically dominant in the expansion wake, indicating that the non-native parental phenotype may be selectively favored. These findings show that cryptic introgression can extend beyond the phenotypic boundaries of hybrid swarms and that hybrid swarms likely expand more rapidly than can be documented from phenotypic variation alone. Similarly, dominance of a single parental phenotype following an introduction event may lead to instances of species erosion being mistaken for species displacement without hybridization.

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Reproductive and Early Life History of Nonindigenous Red Shiner in the Chattahoochee River Drainage, Georgia

Cited by 11 publications

References 38 publications

The influence of discharge, photoperiod, and temperature on the reproductive ecology of cyprinids in the Paluxy River, Texas

The influence of discharge, photoperiod, and temperature on the reproductive ecology of cyprinids in the Paluxy River, Texas

Reproductive isolation and the expansion of an invasive hybrid swarm

Discordant introgression in a rapidly expanding hybrid swarm

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