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140 results for “reproductive ecology”
Database for "Ecological perspectives on female and male reproductive success with competition in two Serapias species" Annals of Botany 2024
<p>Public data from the paper: Ecological perspectives on female and male reproductive success with competition in two Serapias species by J. Borràs, J. Cursach, C. Herrera, S. Perelló-Suau and M. Capó published in Annals of Botany 2024. <a href="https://doi.org/10.1093/aob/mcae074">DOI: 10.1093/aob/mcae074</a></p>
Nest-boxes alter the reproductive ecology of urban cavity-nesters in a species-dependent way
<p><span>Human-provided nesting shelters such as nest-boxes mitigate the shortage of natural breeding sites. Since artificial nests are not where animals evolved and optimised their reproductive performance, it remains inconclusive if these are adequate substitutes, ensuring equivalent fitness returns while breeding. In particular, most knowledge on the ecology of cavity-nesting birds comes from nest-box populations, but no study has directly compared fitness consequences of breeding inside nest-boxes in relation to natural cavities in cities. We directly compare the reproductive performance, life-history trait variation and fitness consequences for two small passerines, blue and great tits, breeding in nest-boxes as opposed to natural cavities in an urban deciduous forest. We use a quasi-experimental setting to comprehend the conservation potential of these artificial cavities and to support/question generalisations stemming from nest-box studies. We show that the effects of cavity type vary between species: in blue tits, fitness proxies were negatively affected by nest-boxes (lower fledging success and fledgling numbers, longer time spent in the nest and later fledging date relative to natural cavities), while in great tits, the fitness proxies were unaffected by cavity type. Importantly, we detected accelerated incubation in both species breeding in nest-boxes. No differences in pre-hatching traits (lay date, clutch size, hatching rates) between cavity types suggest that the fitness deterioration occurred because of post-hatching effects. We highlight the ecological importance of old-growth tree stands, providing natural cavities for city-breeding animals and the need for quantifying alterations of reproductive ecology in other taxa using human-provided nests. Due to the detected cavity type-dependent variation in reproductive performance, we support the criticism regarding the unconditional extrapolation of evolutionary and ecological interpretations of nest-box studies to general populations.</span></p>
Data from: Comparative reproductive ecology of Old and New World Trogons, an order in decline across the world
<p><span>Many tropical species show declining populations. The pantropical order Trogoniformes has 76% of its species ranked as declining, reflecting a world-wide problem. Here we report on the reproductive ecology and life history traits of the declining and near-threatened old world Whitehead's Trogon (<em>Harpactes whiteheadi</em>), the declining new world Collared Trogon (<em>Trogon collaris</em>) and the stable Masked Trogon (<em>T. personatus</em>). We also reviewed the literature on reproductive ecology and life history traits of trogons to assess possible commonalities that might help explain population declines. We found that the declining Whitehead's and Masked Trogons had reasonable nest success (32% and 25%, respectively), while the stable Masked Trogon had poor reproductive success (9%), all contrary to population trends. However, the limited literature data suggested that poor reproductive success may be common among trogons, which may contribute to population declines. Parents fed young at a low rate and had long on-bouts for incubation and nestling warming that reduced activity at the nest, as favored by high nest predation risk over evolutionary time. We found that young fledged from the nest with poorly developed wings, as also favored by high nest predation risk. Evolved nestling periods among trogon species suggests that poor wing development is likely common. Wing development has been shown to affect juvenile survival after leaving the nest. The poor wing development may be an important contributor to population declines that deserves more attention. Evolved life history traits are important to recognize as creating population vulnerabilities in a changing world. </span></p>
Data from: Reproductive ecology of the critically endangered pancake tortoise (Malacochersus tornieri) in the wild
<p>Reproduction of the pancake tortoise in the wild has remained poorly known over the decades. This study fills the knowledge gap by investigating the reproductive ecology of the species in its natural habitats in Kenya. Data were collected using the time-constrained search-and-seize method, group-level scan sampling, radio tracking, and camera-trapping. Our observations revealed a total of 19 mating events that occurred between December and April, predominantly during the rainy seasons. Mating duration averaged 15.2±2.4 minutes. Male-male aggression was observed during the mating season, with the dominant male keeping off all other males and mating with the resident females. Nest preparation events occurred between April and June. Nine nesting events were recorded, but in only five of them was an egg deposited. The nests were dug in loose soil, appeared almost circular, and measured 8.4±0.9 cm wide and 7.0±0.1 cm deep (n=7). The average clutch size was one egg. The eggs were white, hard-shelled, oval, and elongated measuring 4.4±0.4 cm long, 2.7±0.04 cm wide and weighed 17±0.6 g (n=3). Incubation period lasted 177± 5.7 days (n=2), and hatching coincided with the onset of the short rainy season in November, aligned with the availability of abundant food for the tortoises. The hatchlings were minimally wider than long, having an average straight carapace length of 4.5±0.6 cm, an average width of 4.5±0.4 cm, and on average weighed 14.7±3.7g, (N=9). They remained near the nest site for 4-5 days before relocating to tiny rock crevices away from the adult tortoise crevices. Egg and hatchling predation was high, with four of the total of six eggs, observed after they were laid, being destroyed. Three juveniles, out of nine, were also eaten by predators. These findings contribute useful information for the formulation of effective conservation and management strategies for this critically endangered species.</p>
Fig.2 in Comparative Analysis Of Biotopes And Reproductive-Ecological Manifestations Of Bombina Bombina (Linnaeus, 1761) In Latvia
Fig.2. Protocol of the investigation of Bombina bombina biotope.
Fig. 3 in Feeding and reproductive ecology of Cichla piquiti Kullander & Ferreira, 2006 within its native range, Lajeado reservoir, rio Tocantins basin
Fig. 3. Relationship between the size (standard length SL, cm) of Cichla piquiti and its prey.
Figure 5 in Reproductive and ecological similarity between Caretta caretta (Linnaeus, 1758) and Eretmochelys imbricata (Linnaeus, 1766) in southern Bahia (Brazil)
Figure 5. Comparison between the number of hatchlings of both species.
Fig. 6 in Evidence for cryptic diversity in the Neotropical water snake, Helicops angulatus (Linnaeus, 1758) (Dipsadidae, Hydropsini), with comments on its ecology, facultative reproductive mode, and conservation
Fig. 6. The lectotype of Natrix asper Wagler. Photos by Michael Franzen.
Fig. 7 in Evidence for cryptic diversity in the Neotropical water snake, Helicops angulatus (Linnaeus, 1758) (Dipsadidae, Hydropsini), with comments on its ecology, facultative reproductive mode, and conservation
Fig. 7. The holotype of Helicops fumigatus Cope, 1868. Photo by Ned Gilmore.
Fig. 4. NRM 17 in Evidence for cryptic diversity in the Neotropical water snake, Helicops angulatus (Linnaeus, 1758) (Dipsadidae, Hydropsini), with comments on its ecology, facultative reproductive mode, and conservation
Fig. 4. NRM 17, the holotype for Helicops angulatus. Photo courtesy of NRM.
Data files for: Reproductive and ecological adaptations to climate underpin the evolution of sociality in lizards
<p>This repository contains data files and R code neccessary to reproduce the analyses presented in "Reproductive and ecological adaptations to climate underpin the evolution of sociality in lizards" by Halliwell et al.</p> <p>The .R file calls other files within the repository. The .xlsx contains supplementary information regarding data sources.</p>
Data from: Integrating Bayesian genomic cline analyses and association mapping of morphological and ecological traits to dissect reproductive isolation and introgression in a Louisiana Iris hybrid zone
Hybrid zones provide unique opportunities to examine reproductive isolation and introgression in nature. We utilized 45,384 Single Nucleotide Polymorphism (SNP) loci to perform association mapping of 14 floral, vegetative, and ecological traits that differ between Iris hexagona and Iris fulva, and to investigate, using a Bayesian Genomic Cline (BGC) framework, patterns of genomic introgression in a large and phenotypically diverse hybrid zone in southern Louisiana. Many loci of small effect-size were consistently found to be associated with phenotypic variation across all traits, and several individual loci were revealed to influence phenotypic variation across multiple traits. Patterns of genomic introgression were quite heterogeneous throughout the Louisiana Iris genome, with I. hexagona alleles tending to be favored over those of I. fulva. Loci that were found to have exceptional patterns of introgression were also found to be significantly associated with phenotypic variation in a small number of morphological traits. However, this was the exception rather than the rule, as most loci that were associated with morphological trait variation were not significantly associated with excess ancestry. These findings provide insights into the complexity of the genomic architecture of phenotypic differences and are a first step towards identifying loci that are associated with both trait variation and reproductive isolation in nature.
Data and code for the manuscript: "An ecological explanation for hyperallometric scaling of reproduction"
<p>Code, data, and data objects underlying the analyses presented in the manuscript "An ecological explanation for hyperallometric scaling of reproduction".</p> <p>A version of the manuscript is available on bioRxiv: https://doi.org/10.1101/2021.03.12.435090</p> <p>Abstract for the manuscript:</p> <p>"In wild populations, large individuals have disproportionately higher reproductive output than smaller individuals. Some theoretical models explain this pattern – termed reproductive hyperallometry – by individuals allocating a greater fraction of available energy towards reproductive effort as they grow. Here, we propose an ecological explanation for this observation: differences between individuals in rates of resource assimilation, where greater assimilation causes both increased reproduction and body size, resulting in reproductive hyperallometry at the level of the population. We illustrate this effect by determining the relationship between size and reproduction in wild and lab-reared Trinidadian guppies. We show that (i) reproduction increased disproportionately with body size in the wild but not in the lab, where resource competition was eliminated; (ii) in the wild, hyperallometry was greatest during the wet season, when resource competition is strongest; and (iii) detection of hyperallometric scaling of reproduction at the population level was inevitable if individual differences in assimilation were ignored. We propose that ecologically-driven variation in assimilation – caused by size-dependent resource competition, niche expansion, and chance – contributes substantially to hyperallometric scaling of reproduction in natural populations. We recommend that mechanistic models incorporate such ecologically-caused variation when seeking to explain reproductive hyperallometry.'</p> <p>The zip file contains:</p> <p>1. A single R script for running the analyses, generating the results, and producing the figures given in the manuscript </p> <p>- size_reproduction_scaling_lab_wild.R </p> <p>2. Two .csv files containing the wild and lab datasets used in the study:</p> <p>- wild_guppy_data_81-87.csv (the wild dataset)<br> - senecence_long_data.csv (the lab dataset)</p> <p>3. A folder containing 14 model objects. These are the models produced by running the R script. These are provided to save the user time. The model object names correspond to the models described in Table 1 of the manuscript.</p> <p>4. A READ_ME.txt file.</p>
Ecological niche differentiation mediates near-complete premating reproductive isolation within the <em>Gladiolus carneus</em> (Iridaceae) species complex
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An experimental test for ecologically dependent reproductive isolation across an avian migratory divide
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An ecological-evolutionary investigation of phenotypic, genetic, and environmental variation and correlations among reproductive traits of tall goldenrod (<em>Solidago altissima</em>)
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Data from: Comparative reproductive ecology of Old and New World Trogons, an order in decline across the world
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Data from: Reproductive ecology of the critically endangered pancake tortoise (Malacochersus tornieri) in the wild
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Data from: Integrating Bayesian genomic cline analyses and association mapping of morphological and ecological traits to dissect reproductive isolation and introgression in a Louisiana Iris hybrid zone
Open the record for dataset details and reuse information.
Nest-boxes alter the reproductive ecology of urban cavity-nesters in a species-dependent way
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.