What factors influence fin‐nipping damage by the invasive Gambusia holbrooki (Poeciliidae) on native fishes in riverine systems?

2021 ◽  
Author(s):  
Stephen J. Beatty ◽  
Karissa O. Lear ◽  
Mark G. Allen ◽  
Alan J. Lymbery ◽  
James R. Tweedley ◽  
...  
Keyword(s):  
Gambusia Holbrooki ◽  
Native Fishes ◽  
Riverine Systems

Detection of predation on Australian native fishes by Gambusia holbrooki

1999 ◽  
Vol 50 (5) ◽  
pp. 467 ◽  
Author(s):  
Walter Ivantsoff ◽  
Aarn
Keyword(s):  
Transit Time ◽  
Gut Contents ◽  
Native Fish ◽  
Gambusia Holbrooki ◽  
Feeding Trial ◽  
Post Feeding ◽  
Eastern Australia ◽  
Native Fishes

Clearing and staining of Gambusia holbrooki facilitated identification of juvenile fishes among the gut contents, and a feeding trial with captive Gambusia allowed assessment of gut transit time and degradation of melanotaeniid larvae. Regurgitated fishes and eggs in fixative solutions were also investigated. These techniques, extending to 12 h the post-feeding interval in which fishes may be found and differentiated among Gambusia gut contents, were tested on 631 wild-caught Gambusia collected in eastern Australia; an ingested native fish could be identified in the gut of 18 Gambusia, and a cannibalized fish in the gut of three.

Annotated сhecklist of the freshwater fishes of Iran

2010 ◽  
Vol 19 (2) ◽  
pp. 361-386 ◽  
Author(s):  
H.R. Esmaeili ◽  
B.W. Coad ◽  
A. Gholamifard ◽  
N. Nazari ◽  
A. Teimory
Keyword(s):  
New Species ◽  
Exotic Species ◽  
Endemic Species ◽  
Freshwater Fishes ◽  
Gambusia Holbrooki

The confirmed freshwater fishes of Iran comprise 202 species in 104 genera, 28 families, 17 orders and 3 classes found in 19 different basins. There are also 23 species whose presence in Iranian waters needs confirmation by specimens. The most diverse order is the Cypriniformes with 120 confirmed species (59.4%) followed by Perciformes with 28 species (13.9%), Cyprinodontiformes (10 species, 5.0%), Clupeiformes (9 species, 4.5%), Salmoniformes (7 species, 3.5%), Mugiliformes and Siluriformes each with 6 species (3.0%), Acipenseriformes (5 species, 2.5%), Gasterosteiformes (3 species, 1.5%), and 8 other orders each with one species (0.5%). New species are still being discovered, 7 described in 2009, while others are being resurrected from synonymy, newly recorded from Iran, or exotic species newly established. Some taxonomic problems remain and are commented on briefly. Thirty-nine endemic species (19.3%) in 6 families and 23 exotic species (11.4%) in 8 families are listed here. The mosquitofish, Gambusia holbrooki Girard, 1859 is the most widespread exotic species.

Landscape-scale survey of non-native fishes near ornamental aquaculture facilities in Florida, USA

2016 ◽  
Vol 19 (1) ◽  
pp. 223-237 ◽  
Author(s):  
Quenton M. Tuckett ◽  
Jared L. Ritch ◽  
Katelyn M. Lawson ◽  
Jeffrey E. Hill
Keyword(s):  
Landscape Scale ◽  
Native Fishes ◽  
Aquaculture Facilities

Life History Changes in Eastern Mosquitofish (Gambusia holbrooki) Induced by Thermal Elevation

1991 ◽  
Vol 48 (1) ◽  
pp. 60-66 ◽  
Author(s):  
Gary K. Meffe
Keyword(s):  
South Carolina ◽  
Life History ◽  
Nuclear Reactor ◽  
Natural Populations ◽  
Life History Evolution ◽  
Gambusia Holbrooki ◽  
Genetic Changes ◽  
Thermal Death ◽  
Reproductive Biomass ◽  
Eastern Mosquitofish

Much light can be shed on life history evolution through study of responses of organisms to chronic exposure to a novel or perturbed environment. To determine the influence of 28 yr of temporally unpredictable thermal elevation on their life history patterns, I sampled eastern mosquitofish (Gambusia holbrooki) from a thermally elevated (outflow from a nuclear reactor) and an ambient (farm pond) habitat in South Carolina every month for 2 yr. Fish from the artificially heated environment reproduced all year, had higher reproductive investments (higher clutch sizes and reproductive biomass), and smaller offspring than did fish from the ambient environment, which ceased reproduction from October through March, typical for natural populations of the region. Likely environmental factors responsible for these differences include unpredictable food resources, higher mortality from thermal death, and higher predation by fishes and birds in the heated waters. The extent to which these life history alterations are the result of adaptive genetic changes versus phenotypically plastic responses remains to be tested.

Lipid Dynamics during Reproduction in Two Livebearing Fishes, Gambusia holbrooki and Poecilia latipinna

1993 ◽  
Vol 50 (10) ◽  
pp. 2185-2191 ◽  
Author(s):  
Gary K. Meffe ◽  
Franklin F. Snelson Jr.
Keyword(s):  
Lipid Content ◽  
Energy Use ◽  
Late Summer ◽  
Energy Allocation ◽  
Metabolic Efficiency ◽  
Gambusia Holbrooki ◽  
Poecilia Latipinna ◽  
Lipid Dynamics ◽  
Sailfin Molly ◽  
Eastern Mosquitofish

In animals, strategies of energy allocation among growth, maintenance and reproduction can be significantly altered by lipid storage. Poeciliid (livebearing) fishes store energy in late summer and fall for overwintering and first reproduction in spring, but details of energy use in reproduction are lacking. We conducted a laboratory experiment on the eastern mosquitofish (Gambusia holbrooki) and the sailfin molly (Poecilia latipinna) to document changes in lipid content in both the ovary and soma during development of a brood. In females of both species, ovarian lipid content was highest early in embryogeny and then declined; adult somatic lipids increased (were replenished) during embryonic development in mosquitofish, but declined in mollies. Larger clutches sequestered a larger share of body lipids in both species, possibly indicating energetic limits to reproduction. Finally, growth rate was positively correlated with somatic lipid content in both species, indicating among-individual differences in metabolic efficiency or feeding efficiency rather than a trade-off between growth and energy storage.

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