Browsing Biological Sciences by Issue Date
Now showing items 21-40 of 128
Direct and indirect genetic and fine-scale location effects on breeding date in song sparrows
(2020-04-02)
1. Quantifying direct and indirect genetic effects of interacting females and males on variation in jointly expressed life-history traits is central to predicting microevolutionary dynamics. However, accurately estimating ...
Bird assemblage response to restoration of fire‐suppressed longleaf pine sandhills
(2022-09-15)
The ecological restoration of fire‐suppressed habitats may require a multifaceted approach. Removal of hardwood trees together with reintroduction of fire has been suggested as a method of restoring fire‐suppressed longleaf ...
The demographic basis of population regulation in Columbian ground squirrels
(2022-07-29)
Environmental factors influence the dynamics and regulation of biological populations through their influences on demographic variables, but demographic mechanisms of population regulation have received little attention. ...
Magnitude and Predictability of pH Fluctuations Shape Plastic Responses to Ocean Acidification
(2023-06-17)
Phenotypic plasticity is expected to facilitate the persistence of natural populations as global change progresses. The attributes of fluctuating environments that favor the evolution of plasticity have received extensive ...
Fitness implications of seasonal climate variation in Columbian ground squirrels
(2020-04-01)
The influence of climate change on the fitness of wild populations is often studied in the context of the spring onset of the reproductive season. This focus is relevant for climate influences on reproductive success, but ...
The evolution of signal design in manakin plumage ornaments
(2022-07-29)
Animal signals are characterized by two design components: efficacy (detectability) and content (message being conveyed). Selection for efficient signal perception should favor the evolution of traits that exhibit an optimal ...
Severe mammal declines coincide with proliferation of invasive Burmese pythons in Everglades National Park
(2020-04-01)
Invasive species represent a significant threat to global biodiversity
and a substantial economic burden. Burmese pythons, giant
constricting snakes native to Asia, now are found throughout
much of southern Florida, ...
Long-Term Decrease in Coloration: A Consequence of Climate Change?
(2022-09-15)
Climate change has been shown to affect fitness-related traits in a wide range of taxa; for instance, warming leads to phenological advancements in many plant and animal species. The influence of climate change on social ...
Can mixed assessment methods make biology classes more equitable
(2023-09-20)
Many factors have been proposed to explain the attrition of women in science, technology, engineering and math fields, among them the lower performance of women in introductory courses resulting from deficits in incoming ...
Amphibian Speciation Rates Support a General Role of Mountains as Biodiversity Pumps
(2022-09-20)
Continental mountain areas cover <15% of global land surface, yet these regions concentrate >80% of global terrestrial diversity. One prominent hypothesis to explain this pattern proposes that high mountain diversities ...
Fluctuating environments hinder the ability of female lizards to choose suitable nest sites for their embryos
(2022-11-07)
Nesting behavior is an important part of reproduction that affects maternal fitness. Females of most oviparous species choose microhabitats for nesting that have positive effects on embryo development. However, choosing ...
Heat-induced maternal effects shapes avian eggshell traits and embryo response to high temperatures
(2021-03-29)
Populations without a sufficient rate of genetic adaptation may risk extinction in the face of rapid environmental change, however, phenotypic plasticity can facilitate their persistence. For example, mothers can prepare ...
Reproduction and development in Halocaridina rubra Holthuis, 1963 (Crustacea: Atyidae) clarifies larval ecology in the Hawaiian anchialine ecosystem
(2019-08-01)
Larvae in aquatic habitats often develop in environments different from those they inhabit as adults. Shrimp in the Atyidae exemplify this trend, as larvae of many species require salt or brackish water for development, ...
Data from: Dynamics of honey bee colony death and its implications for Varroa destructor mite transmission using observation hives
(2023-01-14)
This dataset contains the data which were collected for the "dynamics of death" research project. There are four data files attached: one readme file, and three sets of data.
Anatomy of the Laminar Organs of Commelina erecta (Commelinaceae)
(2021-01-27)
A study was undertaken to compare the anatomy of the laminar floral parts with that of the spathes and leaves of Commelina erecta L. Each flower has two types of petals and two types of sepals. In contrast to the other ...
The players in a mutualistic symbiosis: insects, bacteria, viruses, and virulence genes
(2019-08-08)
Aphids maintain mutualistic symbioses involving consortia of coinherited organisms. All possess a primary endosymbiont, Buchnera, which compensates for dietary deficiencies; many also contain secondary symbionts, such as ...
Are we underestimating the genetic variances of dimorphic traits?
(2022-09-16)
Populations often contain discrete classes or morphs (e.g., sexual dimorphisms, wing dimorphisms, trophic dimorphisms) characterized by distinct patterns of trait expression. In quantitative genetic analyses, the different ...
Reproductive Value and the Stochastic Demography of Age-Structured Populations
(2020-06-03)
The dynamics of an age-structured population in a fluctuating environment is determined by the stochastic individual contributions from annual survival and fecundity to the total reproductive value of the population the ...