Results 81 to 90 of about 37,665 (237)

Predation shapes sperm performance surfaces in guppies [PDF]

open access: yesProceedings of the Royal Society B: Biological Sciences, 2019
Sperm velocity is a key determinant of competitive fertilization success in many species. Selection is therefore expected to favour the evolution of faster sperm when the level of sperm competition is high. However, several aspects can determine the direction and strength of selection acting on this key performance trait, including ...
Alessandro Devigili   +2 more
openaire   +2 more sources

Size‐selective mortality evolutionarily alters collective behaviour in response to predation risk in a zebrafish (Danio rerio) harvest‐induced selection model

open access: yesJournal of Fish Biology, EarlyView.
Abstract Intensive multigenerational size‐selective mortality has been found to alter collective properties like shoaling via evolutionary adaptations of individual‐level behavioural traits. For example, experimental populations of zebrafish (Danio rerio) experiencing intensive large size‐selective mortality over multiple generations developed less ...
Tamal Roy   +2 more
wiley   +1 more source

Family names as indicators of Britain’s changing regional geography [PDF]

open access: yes, 2009
In recent years the geography of surnames has become increasingly researched in genetics, epidemiology, linguistics and geography. Surnames provide a useful data source for the analysis of population structure, migrations, genetic relationships and ...
Cheshire, JA, Longley, PA, Mateos, P
core  

Evaluation of Experimental Populations and Glandular-Haired Varieties of Alfalfa for Alfalfa Blotch Leafminer (Diptera: Agromyzidae) Feeding Injury [PDF]

open access: yes, 2018
Following the spread of the alfalfa blotch leafminer, Agromyza frontella (Rondani) (Diptera: Agromyzidae), into Minnesota and Wisconsin U.S.A. during 1994-1997, three field trials were conducted in Minnesota to assess the potential for leafminer ...
Burkness, E. C   +3 more
core   +2 more sources

Bony fish genomes: Status and gaps

open access: yesJournal of Fish Biology, EarlyView.
Abstract Bony fish constitute an exceptionally species‐rich group of aquatic vertebrates, comprising more than 95% of all living fish. The adaptive processes on the diversity of environments they inhabit make them a highly diverse group from taxonomic, morphological and evolutionary standpoints.
Noelia Pérez‐Pereira   +3 more
wiley   +1 more source

Convergent evolution of coloration in experimental introductions of the guppy (Poecilia reticulata). [PDF]

open access: yes, 2018
Despite the multitude of examples of evolution in action, relatively fewer studies have taken a replicated approach to understand the repeatability of evolution.
Dick, Cynthia   +3 more
core   +1 more source

Sexual selection and reproductive success in mesocosm populations of African annual killifish

open access: yesJournal of Fish Biology, EarlyView.
Abstract Variation in individuals’ ability to obtain mates generates sexual selection, which typically acts more strongly on males and can produce pronounced differences in phenotypes between the sexes (i.e., sexual dimorphism). The dynamic of sexual selection and individual reproductive success is considerably affected by the availability of ...
Jakub Žák   +2 more
wiley   +1 more source

The Influence of Licorice Root (Glycyrrhiza glabra) on Sex Reversal in Guppy Poecilia reticulata

open access: yesInternational Journal of Secondary Metabolite, 2017
The roots and rhizomes of licorice (Glycyrrhiza) species have long been used worldwide as a herbal medicine and natural sweetener. Licorice is commonly present in menopausal botanical supplements in the United States.
Funda Turan
doaj   +1 more source

Guppies, evolution, and environments

open access: yes, 2020
Answers broad questions about imperfections in the biology of organisms and how fitness is achieved differently based on environmental ...
openaire   +1 more source

Soil phosphorus status in organic and conventional vegetable farms in Southeast Queensland, Australia [PDF]

open access: yes, 2007
The soil phosphorus (P) status (0-10 cm) of two farming systems (organic (OF) and conventional (CF) vegetable farms) at two locations (Gatton and Stanthorpe) was examined amongst a suite of soil fertility indicators.
Guppy, Chris   +3 more
core  

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