Results 11 to 20 of about 159,419 (242)

Broodstock History Strongly Influences Natural Spawning Success in Hatchery Steelhead (Oncorhynchus mykiss). [PDF]

open access: yesPLoS ONE, 2016
We used genetic parentage analysis of 6200 potential parents and 5497 juvenile offspring to evaluate the relative reproductive success of hatchery and natural steelhead (Onchorhynchus mykiss) when spawning in the wild between 2008 and 2011 in the ...
Michael J Ford   +4 more
doaj   +1 more source

Determinants and long‐term costs of early reproduction in males of a long‐lived polygynous mammal

open access: yesEcology and Evolution, 2021
In long‐lived polygynous species, male reproductive success is often monopolized by a few mature dominant individuals. Young males are generally too small to be dominant and may employ alternative tactics; however, little is known about the determinants ...
Yanny Ritchot   +3 more
doaj   +1 more source

Precipitation during two weeks in spring influences reproductive success of first-year females in the long-lived Natterer's bat

open access: yesRoyal Society Open Science, 2022
Bats are characterized by low reproductive rates in contrast with most of other small mammals. This makes their populations vulnerable when inclement environmental conditions such as cold and rainy weather impair the reproductive success of females.
Bianca Stapelfeldt   +5 more
doaj   +1 more source

Reproductive success of Trypoxylon (Trypargilum) lactitarse (Hymenoptera: Crabronidae) in a fragmented landscape [PDF]

open access: yesIheringia: Série Zoologia, 2020
Fragmentation of natural vegetation often implies a reduction in local species richness and abundance. The resources used by bees and wasps for feeding and nesting are distributed quite irregularly in fragmented environments, which influences their ...
Grayce Kelly Costa Oliveira   +3 more
doaj   +1 more source

Indirect routes to reproductive success

open access: yeseLife, 2012
By comparing wild-type and transgenic tobacco plants in a natural ecosystem, researchers have confirmed that the indirect defence mechanisms employed by plants to fend off herbivorous insects can increase Darwinian fitness.
John Pickett
doaj   +1 more source

Temporal changes in reproductive success and optimal breeding decisions in a long-distance migratory bird

open access: yesScientific Reports, 2020
Many avian migrants have not adjusted breeding phenology to climate warming resulting in negative consequences for their offspring. We studied seasonal changes in reproductive success of the greater snow goose (Anser caerulescens atlantica), a long ...
Cynthia Reséndiz-Infante   +1 more
doaj   +1 more source

Using drones and citizen science counts to track colonial waterbird breeding, an indicator for ecosystem health on the Chobe River, Botswana

open access: yesGlobal Ecology and Conservation, 2022
Many of the world’s freshwater ecosystems are degrading with increasing water resource developments, necessitating identification of useful indicators that track large scale environmental change. We investigated the effectiveness of waterbird breeding at
R.J. Francis   +2 more
doaj   +1 more source

Endoparasite infection has both short- and long-term negative effects on reproductive success of female house sparrows, as revealed by faecal parasitic egg counts. [PDF]

open access: yesPLoS ONE, 2015
Parasites have the potential to severely reduce host reproductive success. However, the effects of endoparasites on reproductive success have not received the same amount of attention as the effects of parasites on host survival.
Håkon Holand   +5 more
doaj   +1 more source

Pheromones that correlate with reproductive success in competitive conditions

open access: yesScientific Reports, 2021
The major urinary proteins (MUPs) of house mice (Mus musculus) bind and stabilize the release of pheromones and other volatile organic compounds (VOCs) from urinary scent marks, which mediate chemical communication.
Kenneth C. Luzynski   +5 more
doaj   +1 more source

Selecting habitat to what purpose? The advantage of exploring the habitat–fitness relationship

open access: yesEcosphere, 2017
Measures of reproductive success have been recognized in many fields as essential tools to assess the status of populations, species, and communities. However, difficulties in gathering data on reproductive success often prevent researchers from taking ...
Alessia Uboni   +3 more
doaj   +1 more source

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