Results 11 to 20 of about 6,133 (210)

Species identity of Gambusia (Pisces: Poeciliidae) introduced to Slovenia

Natura Sloveniae, 2007
On the basis of morphology of the gonopodium and fin ray counts it was determined that the introduced mosquitofish in Slovenia belong to the species Gambusia holbrooki Girard, 1859 rather than G. affinis (Baird & Girard, 1858).
Paul Veenvliet
doaj   +3 more sources

Hypersalinity drives physiological and morphological changes in Limia perugiae (Poeciliidae)

Biology Open, 2016
A fundamental question in biology is how an organism's morphology and physiology are shaped by its environment. Here, we evaluate the effects of a hypersaline environment on the morphology and physiology of a population of livebearing fish in the genus ...
Pablo F. Weaver, Oscar Tello, Jonathan Krieger, Arlen Marmolejo, Kathleen F. Weaver, Jerome V. Garcia, Alexander Cruz   +6 more
doaj   +3 more sources

Faster Weight Growth in Invasive Mosquitofish <i>Gambusia holbrooki</i> and <i>Gambusia affinis</i> (Poeciliidae) Under Climate Change. [PDF]

Ecol Evol
Global populations of western mosquitofish G. affinis are more sensitive to climatic variation than eastern mosquitofish G. holbrooki in terms of length‐weight allometries. Under climate change, the populations of G. affinis, especially those in East Asia and Eastern Europe, are expected to grow faster in weight, posing greater threats to native ...
Rao S, Qi W, Cao H, Tang C, Xiao Y, Sun Y, Xiong W, Xie P, Xu K.   +8 more
europepmc   +2 more sources

Male Copulatory Structures in Reproductively Functional Female Live-Bearing Fish <i>Pseudopoecilia fria</i>. [PDF]

Ecol Evol
We recently discovered a population of the live‐bearing fish Pseudopoecilia fria (Cyprinodontiformes: Poeciliidae), in which females were found to possess gonopodia, reproductive organs normally exclusive to male fish that are used in the transfer of sperm in mating.
Yeager J, Avila L, Inman C, Cartee M, Pozo M, Burbano D.   +5 more
europepmc   +2 more sources

Environmental DNA Reveals the Fish Community Structure Exhibited Instability and Trend of Miniaturization in the Xijiang River Basin of the Guizhou. [PDF]

Ecol Evol
Monitoring of fish communities is of great significance for the management and sustainability of river ecosystems. Environmental DNA (eDNA) metabarcoding technology has been demonstrated to be a highly sensitive biomonitoring tool. Nevertheless, it has seldom been tested in mountainous rivers within the geographically complex Karst region.
Ma X, Huang F, Zhang R, Liu T, Zhang T, Zeng P.   +5 more
europepmc   +2 more sources

High Degree of Multiple Paternity and Reproductive Skew in the Highly Fecund Live-Bearing Fish Poecilia gillii (Family Poeciliidae)

Frontiers in Ecology and Evolution, 2020
Multiple paternity is a common phenomenon within the live-bearing fish family Poeciliidae. There is a great variety in brood sizes of at least two orders-of-magnitude across the family.
Myrthe L. Dekker, Andres Hagmayer, Karen M. Leon-Kloosterziel, Andrew I. Furness, Bart J. A. Pollux   +4 more
doaj   +1 more source

Female mating preferences in blind cave tetras Astyanax fasciatus (Characidae, Teleostei). [PDF]

, 2006
The Mexican tetra Astyanax fasciatus has evolved a variety of more or less color- and eyeless cave populations. Here we examined the evolution of the female preference for large male body size within different populations of this species, either surface-
Plath, Martin, Rohde, Matthias, Schlupp, Ingo, Schröder, Thekla, Taebel-Hellwig, Angelika   +4 more
core   +1 more source

Predator avoidance in extremophile fish [PDF]

, 2013
Extreme habitats are often characterized by reduced predation pressures, thus representing refuges for the inhabiting species. The present study was designed to investigate predator avoidance of extremophile populations of Poecilia mexicana and P ...
Arias-Rodriguez, Lenin, Bierbach, David, Herrmann, Nina, Indy, Jeane Rimber, Plath, Martin, Riesch, Rüdiger, Schulte, Matthias, Zimmer, Claudia   +7 more
core   +2 more sources

Pantanodontidae (Teleostei, Cyprinodontiformes), the sister group to all other cyprinodontoid killifishes as inferred by molecular data

Zoosystematics and Evolution, 2018
Pantanodon, containing two African extant species and four European fossil species, for a long time had an uncertain position among the Cyprinodontiformes due to its peculiar morphology. In the last decades, Pantanodon has been considered closely related
Pedro H.N. Bragança, Pedro F. Amorim, Wilson J.E.M. Costa   +2 more
doaj   +3 more sources

Oil Things Bright and Beautiful? How Hydrocarbon Pollution Impacts Guppy Ornamentation. [PDF]

Ecol Evol
Spatial variation in crude oil pollution in Trinidad leads to differing levels of pollutant exposure in connected guppy populations. Male guppy ornamentation is an important sexually selected trait affected by environmental changes. Measuring area and intensity of this ornamentation, we found guppies from anthropogenically polluted habitats had greater
McGovern HR, Santi F, Deacon A, Riesch R.   +3 more
europepmc   +2 more sources