Search Results - "BALLOU, JONATHAN D."

Call for a Paradigm Shift in the Genetic Management of Fragmented Populations by Ralls, Katherine, Ballou, Jonathan D., Dudash, Michele R., Eldridge, Mark D. B., Fenster, Charles B., Lacy, Robert C., Sunnucks, Paul, Frankham, Richard

“…Thousands of small populations are at increased risk of extinction because genetics and evolutionary biology are not well‐integrated into conservation…”
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Predicting the Probability of Outbreeding Depression by FRANKHAM, RICHARD, BALLOU, JONATHAN D., ELDRIDGE, MARK D. B., LACY, ROBERT C., RALLS, KATHERINE, DUDASH, MICHELE R., FENSTER, CHARLES B.

“…Fragmentation of animal and plant populations typically leads to genetic erosion and increased probability of extirpation. Although these effects can usually…”
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Realistic levels of inbreeding depression strongly affect extinction risk in wild populations by O’Grady, Julian J., Brook, Barry W., Reed, David H., Ballou, Jonathan D., Tonkyn, David W., Frankham, Richard

“…The role of inbreeding depression in the extinction of wild populations is controversial, largely because there are no quantitative estimates of its impact…”
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PMx: software package for demographic and genetic analysis and management of pedigreed populations by Lacy, Robert C., Ballou, Jonathan D., Pollak, John P.

“…Summary 1. The concepts and algorithms for demographic and genetic analysis of pedigreed populations have been evolving rapidly in recent years. 2. The PMx…”
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Estimates of minimum viable population sizes for vertebrates and factors influencing those estimates by Reed, David H, O'Grady, Julian J, Brook, Barry W, Ballou, Jonathan D, Frankham, Richard

“…Population size is a major determinant of extinction risk. However, controversy remains as to how large populations need to be to ensure persistence. It is…”
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Implications of different species concepts for conserving biodiversity by Frankham, Richard, Ballou, Jonathan D., Dudash, Michele R., Eldridge, Mark D.B., Fenster, Charles B., Lacy, Robert C., Mendelson, Joseph R., Porton, Ingrid J., Ralls, Katherine, Ryder, Oliver A.

“…► Different species concepts have a critical bearing on conservation of species. ► Many species contain small populations suffering from genetic deterioration…”
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Applying the zoo model to conservation of threatened exceptional plant species by Wood, Jordan, Ballou, Jonathan D., Callicrate, Taylor, Fant, Jeremie B., Griffith, M. Patrick, Kramer, Andrea T., Lacy, Robert C., Meyer, Abby, Sullivan, Sara, Traylor‐Holzer, Kathy, Walsh, Seana K., Havens, Kayri

“…Maintaining a living plant collection is the most common method of ex situ conservation for plant species that cannot be seed banked (i.e., exceptional…”
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A father effect explains sex-ratio bias by Malo, Aurelio F., Martinez-Pastor, Felipe, Garcia-Gonzalez, Francisco, Garde, Julián, Ballou, Jonathan D., Lacy, Robert C.

“…Sex ratio allocation has important fitness consequences, and theory predicts that parents should adjust offspring sex ratio in cases where the fitness returns…”
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Strategies for establishing and using genome resource banks to protect genetic diversity in conservation breeding programs by Ballou, Jonathan D., Lacy, Robert C., Traylor‐Holzer, Kathy, Bauman, Karen, Ivy, Jamie A., Asa, Cheryl

“…Genome resource banks (GRBs) have the potential to preserve the genetic diversity of a species over time, yet they are rarely utilized as effective components…”
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Prehistoric Decline of Genetic Diversity in the Nene by Paxinos, Ellen E., James, Helen F., Olson, Storrs L., Ballou, Jonathan D., Leonard, Jennifer A., Fleischer, Robert C.

“…Paxinos et al report an assessment of genetic variation in samples of nene, or Hawaiian goose, on the island of Hawaii from four time periods. Their results…”
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Estimating Inbreeding Rates in Natural Populations: Addressing the Problem of Incomplete Pedigrees by Miller, Mark P, Haig, Susan M, Ballou, Jonathan D, Steel, E Ashley

“…Understanding and estimating inbreeding is essential for managing threatened and endangered wildlife populations. However, determination of inbreeding rates in…”
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Conservation and Genetics by Fenster, Charles B, Ballou, Jonathan D, Dudash, Michele R, Eldridge, Mark D B, Frankham, Richard, Lacy, Robert C, Ralls, Katherine, Sunnucks, Paul

“…Humans are responsible for a cataclysm of species extinction that will change the world as we see it, and will adversely affect human health and wellbeing. We…”
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Applying genomics to metapopulation management in North American insurance populations of southern sable antelope (Hippotragus niger niger) and addra gazelle (Nanger dama ruficollis) by Gooley, Rebecca M., Dicks, Kara L., Ferrie, Gina M., Lacy, Robert C., Ballou, Jonathan D., Callicrate, Taylor, Senn, Helen, Koepfli, Klaus-Peter, Edwards, Cody W., Pukazhenthi, Budhan S.

“…Insurance populations can provide a short-term safeguard for at-risk species. The goal for all insurance populations should be to maintain a high welfare,…”
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A Primer of Conservation Genetics by Frankham, Richard, Ballou, Jonathan D., Briscoe, David A.

“…This concise, entry level text provides an introduction to the importance of genetic studies in conservation and presents the essentials of the discipline in…”
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Do mothers prefer helpers? Birth sex-ratio adjustment in captive callitrichines by Rapaport, Lisa G., Kloc, Briana, Warneke, Mark, Mickelberg, Jennifer L., Ballou, Jonathan D.

“…Parental investment theory predicts that natural selection will favour a parental ability to bias the offspring sex ratio in favour of that which will yield…”
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GENETIC STATUS AND MANAGEMENT OF CALIFORNIA CONDORS by Ralls, Katherine, Ballou, Jonathan D

“…The last wild California Condor (Gymnogyps californianus) was brought into captivity in 1987. Captive breeding was successful and reintroduction efforts began…”
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Survivorship patterns in captive mammalian populations: implications for estimating population growth rates by Lynch, Heather J, Zeigler, Sara, Wells, Leslie, Ballou, Jonathan D, Fagan, William F

“…For species of conservation concern, ecologists often need to estimate potential population growth rates with minimal life history data. We use a survivorship…”
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Strength of Habitat and Landscape Metrics in Predicting Golden-Headed Lion Tamarin Presence or Absence in Forest Patches in Southern Bahia, Brazil by Raboy, Becky E., Neves, Leonardo G., Zeigler, Sara, Saraiva, Nicholas A., Cardoso, Nayara, dos Santos, Gabriel Rodrigues, Ballou, Jonathan D., Leimgruber, Peter

“…We investigated the effects of forest fragmentation on golden-headed lion tamarins (Leontopithecus chrysomelas) by qualitatively and quantitatively…”
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Pedigrees and the Study of the Wild Horse Population of Assateague Island National Seashore by EGGERT, LORI S., POWELL, DAVID M., BALLOU, JONATHAN D., MALO, AURELIO F., TURNER, ALLISON, KUMER, JACK, ZIMMERMAN, CARL, FLEISCHER, ROBERT C., MALDONADO, JESÚS E.

“…Recently, a number of papers have addressed the use of pedigrees in the study of wild populations, highlighting the value of pedigrees in conservation…”
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Effectiveness of Selection in Reducing the Genetic Load in Populations of Peromyscus polionotus During Generations of Inbreeding by Lacy, Robert C., Ballou, Jonathan D.

“…It has been hypothesized that natural selection reduces the 'genetic load' of deleterious alleles from populations that inbreed during bottlenecks, thereby…”
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