Results 41 to 50 of about 6,102 (197)

Genotoxicity and Cytotoxicity Exerted by Pesticides in Different Biotic Matrices-An Overview of More Than a Decade of Experimental Evaluation [PDF]

open access: yes, 2014
Agrochemicals represent one of the most important sources of environmental pollution. Although attempts to reduce agrochemical use through organic agricultural practices and the use of other technologies to control pests continue, the problem is still
Larramendy, Marcelo Luis   +3 more
core   +2 more sources

Exotic and invasive fishes in Mexico [PDF]

open access: yesCheck List, 2015
This paper presents a list of the exotic fish species introduced in Mexican aquatic systems. This list is the result of the systematized information contained in several databases of ichthyological collections around the world and different publications.
Hector Espinosa Perez   +1 more
doaj   +3 more sources

Reproductive Mode and Conflict Shape the Evolution of Male Attributes and Rate of Speciation in the Fish Family Poeciliidae

open access: yesFrontiers in Ecology and Evolution, 2021
Sexual conflict is caused by differences between the sexes in how fitness is maximized. These differences are shaped by the discrepancy in the investment in gametes, how mates are chosen and how embryos and young are provided for.
David N. Reznick   +3 more
doaj   +1 more source

Mating and aggressive behaviour of Brachyrhaphis olomina (Cyprinodontiformes: Poeciliidae) [PDF]

open access: yesJournal of Ethology, 2017
Abstract Despite the increasing interest in the use of intromittent male genitalia and coercive mating behaviour in poeciliids, detailed studies of the mating behaviour of most species in this family are lacking. We describe here the mating and aggressive behaviours of Brachyrhaphis olomina, and correlate them with the condition of the female’
Garita Alvarado, Carlos A.   +2 more
openaire   +4 more sources

Linking rivers, mixing faunas: How artificial connectivity between the Middle and Upper Paraná River basins shapes fish diversity in a tributary of the Itaipu Reservoir, Brazil

open access: yesJournal of Fish Biology, EarlyView.
Abstract This work aimed to investigate the distribution and occurrence of fish species along the São Francisco Falso Braço Norte (SFFBN) River basin, a tributary of the Middle Paraná River basin now artificially connected to the Upper Paraná ecoregion, to evaluate how such connectivity may affect the biogeographic distribution and regional composition
Lucas E. P. Kampfert   +5 more
wiley   +1 more source

Peces nativos y pesca artesanal en la cuenca Usumacinta, Guatemala

open access: yesRevista Mexicana de Biodiversidad, 2018
La ictiofauna nativa de la cuenca del río Usumacinta se documentó en el noroeste de Guatemala para conocer la composición de los peces nativos en 20 sitios y su importancia en la pesca artesanal.
Christian Barrientos   +3 more
doaj   +1 more source

Predator Environment Does Not Predict Life History in the Morphologically Constrained Fish Alfaro cultratus (Cyprinodontiformes: Poeciliidae)

open access: yesFrontiers in Ecology and Evolution, 2021
Predation is known to have a significant effect on life history diversification in a variety of species. However, physical constraints of body shape and size can sometimes limit life history divergence.
Kaitlyn B. Golden   +3 more
doaj   +1 more source

Interactions between male guppies facilitates the transmission of the mongenean ectoparasite Gyrodactylus turnbulli [PDF]

open access: yes, 2012
In a previous study we found that female guppies shoaled more than males and that there was greater transmission of the ectoparasite Gyrodactylus turnbulli between females.
Cable, J   +2 more
core   +1 more source

Biochemical Responses of Anopheles spp. Larvae to a Novel Brazilian BR101 Bacillus thuringiensis var. israelensis Formulation: Oxidative Stress, Detoxification Enzymes, and Safety for Nontarget Notonectidae and Gerridae Aquatic Insects

open access: yesChemistry &Biodiversity, Volume 23, Issue 2, February 2026.
Bti BR101 exhibits strong larvicidal activity against Anopheles larvae spp., with dose‐dependent mortality and LC50 of 3.13 µg/mL. Bti increases ROS, lipid and protein oxidation, and activates antioxidant enzymes (SOD, CAT, GPx) and detoxification pathways (MFO and esterases), indicating moderate oxidative stress.
Izabel Cristina de Oliveira Bentes   +14 more
wiley   +1 more source

Nuevos registros de distribución de Gambusia rhizophorae (Teleostei: Poeciliidae) en el archipiélago cubano

open access: yesNovitates Caribaea, 2015
El complejo de especies Gambusia punctata está representado en Cuba por dos especies: G. punctata Poey, 1854, endémica de Cuba y G. rhizophorae Rivas, 1969, la que ha sido reportada en los cayos de Florida, en el sur Estados Unidos, y la costa norte del ...
Rodet Rodríguez Silva
doaj   +1 more source

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