Results 21 to 30 of about 2,154 (173)

Intraspecific Variation in Elemental Composition of the Least Killifish Tracks Spatial Variation in Periphyton Composition. [PDF]

Ecol Evol
We examined organismal stoichiometry and trophic niche of Heterandria formosa , a periphyton grazer, in eight populations, four each from freshwater springs and shallow lakes. Water chemistry varied along a gradient from lakes to springs. Population variation in organismal stoichiometry of fish tracked the variation observed in periphyton samples ...
Pluer BD, MacRae PSD, Travis J.
europepmc   +2 more sources

Long-Term Sperm Storage in a Superfetatious Live-Bearing Fish (<i>Poeciliopsis gracilis</i>, Poeciliidae). [PDF]

Ecol Evol
Among the vertebrates, live‐bearing fishes of the family Poeciliidae are generally assumed to store sperm for extended periods of time, but the temporal dynamics of this process remain enigmatic for most species. With this study, we assess the maximum duration of sperm storage and usage in the superfetatious poeciliid Poeciliopsis gracilis by comparing
Ernst TR, Hogers RMHW, Kwant PJC, Korosi A, van Leeuwen JL, Kotrschal A, Pollux BJA.   +6 more
europepmc   +2 more sources

Aspects of the life history of the Tamesí molly, Poecilia latipunctata, from two populations in the Río Tamesí drainage in northeastern Mexico

Revista Mexicana de Biodiversidad, 2021
In the face of human-induced environmental change, basic biological data for species threatened by the impacts of human activities are sorely needed to devise and execute proper conservation strategies. Here we provide aspects of basic life-history data
Rudiger Riesch, Amber M. Makowicz, Brandon Joachim, Francisco J. García-De León, Ingo Schlupp   +4 more
doaj   +1 more source

The Digestive Microbiome Diversity of the Least Killifish, Heterandria formosa, and Its Implications for Host Adaptability to Varying Trophic Levels. [PDF]

Environ Microbiol Rep
Investigations of environmental factors influence on the gut microbiome of the least killifish reveal high variability in gut microbiomes between disparate sites and higher microbial diversity in healthier habitats as reported by the Florida Department of Environmental Protection. Findings suggests specific microbial taxa that may aid in bioremediation
Pluer BD, Travis J.
europepmc   +2 more sources

Phenotypic Variation in an Asexual-Sexual Fish System: Visual Lateralization

Frontiers in Ecology and Evolution, 2021
Sexual reproduction is nearly ubiquitous in the vertebrate world, yet its evolution and maintenance remain a conundrum due to the cost of males. Conversely, asexually reproducing species should enjoy a twofold population increase and thus replace sexual ...
Allison D. Connelly, Michael J. Ryan
doaj   +1 more source

A Tetraploid Amazon Molly, Poecilia formosa [PDF]

Journal of Heredity, 2008
Polyploidization is thought to be an important driving force in evolution as it increases the genetic material on which mutation and selection can act. In the Amazon molly, Poecilia formosa, triploid genotypes can be found in the field and frequently arise from diploid breeding stocks, a tetraploid individual, however, was so far never documented. Here,
Kathrin P, Lampert, Dunja K, Lamatsch, Petra, Fischer, Manfred, Schartl   +3 more
openaire   +2 more sources

Two Locomotor Traits Show Different Patterns of Developmental Plasticity Between Closely Related Clonal and Sexual Fish

Frontiers in Physiology, 2021
The capacity to compensate for environmental change determines population persistence and biogeography. In ectothermic organisms, performance at different temperatures can be strongly affected by temperatures experienced during early development.
Kate L. Laskowski, Kate L. Laskowski, Frank Seebacher, Marie Habedank, Johannes Meka, David Bierbach, David Bierbach, David Bierbach   +7 more
doaj   +1 more source

Origin and Diversification of Meprin Proteases. [PDF]

PLoS ONE, 2015
Meprins are astacin metalloproteases with a characteristic, easily recognizable structure, given that they are the only proteases with both MAM and MATH domains plus a transmembrane region.
Ignacio Marín
doaj   +1 more source

Automictic Reproduction in Interspecific Hybrids of Poeciliid Fish [PDF]

, 2007
SummaryAutomixis, the process whereby the fusion of meiotic products restores the diploid state of the egg, is a common mode of reproduction in plants but has also been described in invertebrate animals [1, 2].
Lampert, Kathrin P., Lamatsch, Dunja K., Fischer, Petra, Epplen, Jörg T., Nanda, Indrajit, Schmid, Michael, Schartl, Manfred   +6 more
core   +1 more source

Behavioural individuality in clonal fish arises despite near-identical rearing conditions. [PDF]

, 2017
Behavioural individuality is thought to be caused by differences in genes and/or environmental conditions. Therefore, if these sources of variation are removed, individuals are predicted to develop similar phenotypes lacking repeatable individual ...
Bierbach, David, Laskowski, Kate L, Wolf, Max   +2 more
core   +2 more sources