Abstract:
:Genetic introgression has been suggested as a management tool for mitigating detrimental effects of inbreeding depression, but the role of introgression in species conservation has been controversial, partly because population-level impacts of genetic introgressions are not well understood. Concerns about potential inbreeding depression in the endangered Florida panther (Puma concolor coryi) led to the release of eight female Texas pumas (P. c. stanleyana) into the Florida panther population in 1995. We used long-term reproductive data (1995-2008) collected from 61 female Florida panthers to estimate and model reproduction probability (probability of producing a litter) and litter size, and to investigate the influence of intentional genetic introgression on these parameters. Overall, 6-month probability of reproduction (±1SE) was 0.232 ± 0.021 and average litter size was 2.60 ± 0.09. Although F(1) admixed females had a lower reproduction probability than females with other ancestries, this was most likely because kittens born to F(1) females survive better; consequently, these females are unavailable for breeding until kittens are independent. There was no evidence for the effect of ancestry on litter size or of heterozygosity on probability of reproduction or litter size. In contrast, earlier studies have shown that genetic introgression positively affected Florida panther survival. Our results, along with those of earlier studies, clearly suggest that genetic introgression can have differential effects on components of fitness and highlight the importance of examining multiple demographic parameters when evaluating the effects of management actions.
journal_name
Oecologiajournal_title
Oecologiaauthors
Hostetler JA,Onorato DP,Bolker BM,Johnson WE,O'Brien SJ,Jansen D,Oli MKdoi
10.1007/s00442-011-2083-0subject
Has Abstractpub_date
2012-01-01 00:00:00pages
289-300issue
1eissn
0029-8549issn
1432-1939journal_volume
168pub_type
杂志文章相关文献
OECOLOGIA文献大全abstract::Measurements are reported of carbon isotope ratios of Dudleya species growing in natural plant communities. Considerable variation in the δ13C values are interpreted as indicating substantial flexibility of the photosynthetic pathways between C3 and CAM. The variability in photosynthetic pathway was in response to gen...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00399763
更新日期:1977-12-01 00:00:00
abstract::The logistic equation has been used as the basis of two distinct models of population dynamics, a resource limited model and an equilibrium model. It is argued that although the two models are very different, the distinction between them has been obscured by the use of the same terminology for the parameters of both. ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00347602
更新日期:1981-07-01 00:00:00
abstract::Aspects of the demography of Monhystera disjuncta were investigated at different temperatures (in agnotobiotic cultures) and in different feeding conditions (monoxenic cultures with different bacterial strains, and different densities in the feeding suspension with one strain). Embryonic development time, minimum gene...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00378033
更新日期:1988-11-01 00:00:00
abstract::CO2 assimilation in relation to light intensity and the relationship between leaf nitrogen and phosphorus concentrations and CO2 assimilation in 14 species of ecologically important Zimbabwean trees were examined. Eight of the species are members of the Fabaceae (Leguminosae). In the majority of Zimbabwean climax wood...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00317582
更新日期:1991-11-01 00:00:00
abstract::We examined under laboratory conditions the thermopreference of the migratory locust, Locusta migratoria migratorioides, following infection by the entomopathogenic fungus Metarhizium anisopliae var. acridum and its influence on mycosis. Infected locusts raised their body temperature more frequently than healthy consp...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-003-1431-0
更新日期:2004-01-01 00:00:00
abstract::Indications of global climate change and associated unusual temperature fluctuations have become increasingly obvious over the past few decades. Consequently, the relevance of temperature increases for ecological communities and for whole ecosystems is one of the major challenges of current ecological research. One ap...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-006-0545-6
更新日期:2007-03-01 00:00:00
abstract::Nutrient availability and herbivory can regulate primary production in ecosystems, but little is known about how, or whether, they may interact with one another. Here, we investigate how nitrogen availability and insect herbivory interact to alter aboveground and belowground plant community biomass in an old-field eco...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-011-2028-7
更新日期:2011-11-01 00:00:00
abstract::Three types of experiments indicate that the functional organization of the mountain birch may influence the ways in which the tree responds to simulated or natural herbivory. The first experiment showed that herbivory to both short and long shoot leaves affects plant development but, because growth largely proceeds b...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00323540
更新日期:1990-02-01 00:00:00
abstract::With multiple species introductions and rapid global changes, there is a need for comprehensive invasion models that can predict community responses. Evidence suggests that abiotic constraint, propagule pressure, and biotic resistance of resident species each determine plant invasion success, yet their interactions ar...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-014-3188-z
更新日期:2015-05-01 00:00:00
abstract::Resprouting is the main regeneration mechanism after fire in Mediterranean-type ecosystems. Herbivores play an important role in controlling postfire seedling establishment, but their influence on regeneration by resprouting is less well known. To study the effects of fire intensity on resprouting of Adenostoma fascic...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00320621
更新日期:1991-01-01 00:00:00
abstract::We measured the response of dark respiration (R(d)) to temperature and foliage characteristics in the upper canopies of tree species in temperate rainforest communities in New Zealand along a soil chronosequence (six sites from 6 years to 120,000 years). The chronosequence provided a vegetation gradient characterised ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-004-1803-0
更新日期:2005-03-01 00:00:00
abstract::We determined the effects of defoliation by a graminivorous grasshopper on the foliage quality of the C3 plant, western wheatgrass (Pascopyrum smithii [Rydb] A. Love). Additionally, we determined the effects of this defoliation upon the subsequent feeding of the graminivorous grasshopper Phoetaliotes nebrascensis Thom...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00317133
更新日期:1994-11-01 00:00:00
abstract::The phytochemical action of Erica scoparia L. upon its environment was studied. The toxicity of biogenic heath products on red clover seedlings was demonstrated by biological tests. Ten phenolic hydrosoluble compounds were identified; p-Hydroxybenzoic, vanillic, syringic, caffeic, ferulic, p-coumaric, protocatechuic, ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00344891
更新日期:1977-03-01 00:00:00
abstract::The effects of floral morphology on rates of pollen removal and deposition by different pollinators in generalist plant species are not well known. We studied pollination dynamics in wild radish, Raphanus raphanistrum, a plant visited by four groups of pollinators: honey bees, small native bees, butterflies, and syrph...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00328588
更新日期:1995-10-01 00:00:00
abstract::Beaver (Castor canadensis) affect the benthic invertebrate community of small woodland streams in Quebec through habitat modifications. Their activities influence community structure through the replacement of lotic taxa by lentic forms and community function by increasing the absolute importance of collectors and pre...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00378759
更新日期:1986-03-01 00:00:00
abstract::Reptile ticks mate while females are attached to their host. Following mating, females engorge, detach and then lay their eggs. This study examines whether the time that females of the reptile tick Amblyomma limbatum spend on hosts prior to mating and the time they take to engorge on hosts after mating influence their...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00317303
更新日期:1993-05-01 00:00:00
abstract::The life ofOncopeltus fasciatus centers on the seeds of milkweeds (Asclepiadaceae,Asclepias syriaca in this study). Adults reproduce prolifically on these seeds, but they engage in only half as much copulation and lay only a few eggs when fed milkweed buds and flowers instead. They can not maintain body weight on a di...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00582894
更新日期:1976-06-01 00:00:00
abstract::Environmental filtering and niche differentiation are processes proposed to drive community assembly, generating nonrandom patterns in community trait distributions. Despite the substantial intraspecific trait variation present in plant communities, most previous studies of trait-based community assembly have used spe...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-012-2351-7
更新日期:2012-11-01 00:00:00
abstract::Myrmecophytic symbioses are widespread in tropical ecosystems and their diversity makes them useful tools for understanding the origin and evolution of mutualisms. Obligate ant-plants, or myrmecophytes, provide a nesting place, and, often, food to a limited number of plant-ant species. In exchange, plant-ants protect ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-010-1739-5
更新日期:2011-02-01 00:00:00
abstract::Crucian carp (Carassius carassius) increases in body depth in response to chemical cues from piscivores and the deeper body constitutes a morphological defence against gape-limited piscivores. In the field, deep-bodied individuals suffer a density-dependent cost when competing with shallow-bodied conspecifics. Here, w...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050901
更新日期:1999-10-01 00:00:00
abstract::11 fruit fly species captured at 47 sites in a natural forest area at Cooloola (south-east Queensland) revealed specific patterns of spatial abundance. Although all species were collected throughout the study area, D. bryoniae, D. mayi, D. neohumeralis and D. tryoni were more prevalent (average number caught per trap)...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00376882
更新日期:1984-10-01 00:00:00
abstract::A 9-year study of the structure of assemblages of fish on 20 coral patch reefs, based on 20 non-manipulative censuses, revealed a total of 141 species from 34 families, although 40 species accounted for over 95% of sightings of fish. The average patch reef was 8.5 m2 in surface area, and supported 125 fish of 20 speci...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00326094
更新日期:1994-06-01 00:00:00
abstract::Floral visitors vary in their pollination efficiency and their preferences for floral traits. If low-efficiency pollinators decrease the amount of pollen available to higher efficiency visitors, then low-efficiency visitors may actually have negative fitness consequences for the plants that they visit. We used experim...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-004-1677-1
更新日期:2004-12-01 00:00:00
abstract::We determined the water-soluble thiol (SH) content and the osmolality of the cell sap in spruce trees of both low- and high-altitude origin that were transplanted to two test areas at different altitudes (400 m and 1700 m). There was little or no significant difference in SH content and osmotic value between trees of ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379966
更新日期:1988-07-01 00:00:00
abstract::Stratospheric ozone depletion has caused ground-level ultraviolet-B (UV-B) radiation to rise in temperate latitudes of both hemispheres. Because the effects of enhanced UV-B radiation on the nutrition of food consumed by mammalian herbivores are unknown, we measured nutritional and chemical constituents of 18 forages ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-008-0978-1
更新日期:2008-05-01 00:00:00
abstract::The pace-of-life syndrome describes covariation between life-history, behavioral and physiological traits; while, the emerging behavioral-bioenergetics theory proposes mechanistic links between those traits in a spatial-ecological context. However, little is known about the association between the limits to metabolic ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-020-04704-x
更新日期:2020-07-01 00:00:00
abstract::The diurnal changes in proline and water contents of Zygophyllum quatarense and Francoeuria crispa were investigated under desert conditions. In both plants, the proline content was low before sunrise amounting to 10.42 μmoles/g fresh weight in Zygophyllum and 6.3 μmoles/g fresh weight in Francoeuria. By the progress ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00540609
更新日期:1981-01-01 00:00:00
abstract::Plants derived from ten representative Limnanthes alba populations in Northern California, grown in a common environment, showed significant among-population genetic variation of certain floral and life history characters. Variation of these two sets of characters also correlated with the geographic distribution of po...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379884
更新日期:1984-08-01 00:00:00
abstract::Daily energy metabolism and water flux were measured with doubly labeled water in the free-living insectivorous lizards Cnemidophorus tigris (mean body mass 15.7 g) and Callisaurus draconoides (8.6 g) in June 1979 in the Colorado Desert of California. C. tigris was an active forager; it spent 91% of its 5-h daily acti...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00376899
更新日期:1981-05-01 00:00:00
abstract::The dynamics of vegetative and reproductive growth were compared in matched pairs of Mediteranean and desert populations of three unrelated annual species, Erucaria hispanica (L.) Druce, Brachypodium distachyon (L.) Beauv. and Bromus fasciculatus C. Presl., under high and low levels of water availability in a common-e...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00319010
更新日期:1992-01-01 00:00:00