Results 11 to 20 of about 550,013 (239)

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

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

Early maternal experience shapes offspring performance in the wild [PDF]

open access: yes, 2013
Both the environments experienced by a mother as a juvenile and an adult can affect her investment in offspring. However, the implications of these maternal legacies, both juvenile and adult, for offspring fitness in natural populations are unclear.
Armstrong, J.D.   +4 more
core   +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

Sex allocation and reproductive success in the andromonoecious perennial, Solanum carolinense (Solanaceae). II. paternity and functional gender [PDF]

open access: yes, 2017
The work was supported by a National Science Foundation Doctoral Dissertation Improvement grant (DEB‐9411513), by the Society for Sigma Xi, and by a Hutcheson Memorial Forest grant.According to Bateman's principle, male fitness in entomophilous plant ...
Elle, E, Meagher, Thomas Robert
core   +1 more source

Silver-spoon upbringing improves early-life fitness but promotes reproductive ageing in a wild bird [PDF]

open access: yes, 2020
Early-life conditions can have long-lasting effects and organisms that experience a poor start in life are often expected to age at a faster rate.
Chantepie, Stéphane   +5 more
core   +3 more sources

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

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