Ewen thorogood armstrong demographic consequences adult ratio reintroduced hihi

ewen thorogood armstrong demographic consequences adult ratio reintroduced hihi

Ewen, J.G., Thorogood, R. & Armstrong, D.P. Demographic consequences of adult sex ratio in a reintroduced hihi population. Journal ofAnimal Ecology.
The mainland population exhibited a lower overall adult survival rate and more even sex Such demographic variation within a species indicate habitat-specific population parameters. .. Ewen, J.G.; Thorogood, R.T.; Armstrong, D.P. Demographic consequences of adult sex ratio in a reintroduced hihi population.
JG Ewen, R Thorogood, P Brekke, P Cassey, F Karadas, DP Armstrong Demographic consequences of adult sex ratio in a reintroduced hihi population.

Ewen thorogood armstrong demographic consequences adult ratio reintroduced hihi -- travel

Estimates were model averaged across the complete candidate model set based on the amount of support for each model. Although we can explain why such behaviours may evolve and have studied their impacts on individuals when it does, we know very little about the demographic consequences of harassment caused by changes in adult sex ratio. Armstrong , Kevin A.

Estimates were model averaged across the complete candidate model set based on the amount of support for each model. US National Library of Medicine. Manuscript Review and Publication. For species at risk from sex ratio skew, we have demonstrated here that a reasonable number of individuals in a population may not equate to a viable population if feedbacks are operating to exacerbate the bias. This indicates that production of all-male hatchlings in the near future is not just a worst-case scenario, but a real possibility. PLOS Neglected Tropical Diseases. Juvenile tuatara are difficult to detect and are infrequently caught. An alternative is to not intervene, and to value this population as a case study of the capacity of isolated populations to adapt to climate change and sex ratio bias. Add to Clipboard Add to Collections Order articles Add to My Bibliography Generate a file for religious singles hindu women with external citation management software. Miller KA, Miller HC, Moore JA, Mitchell NJ, Cree A, et al. Author Contributions Conceived and designed the experiments: NJM SNK NJN. Here we explore the mechanisms behind this change and examine the consequences for population viability. If the undetectable portion of the population was consistently biased towards females, our results could over-estimate the number of males. Reduced body condition can have direct impacts on female fitness, ewen thorogood armstrong demographic consequences adult ratio reintroduced hihi. Sum of Facebook and Twitter activity. Temporary numbers were written on the side of each animal with nontoxic markers to identify of recaptures each night. Our capture data and mark-recapture results indicate a continued decrease in the female tuatara population on North Brother Island. Population surveys and assessment of body condition. NCBI Skip to main.





Expedition: Ewen thorogood armstrong demographic consequences adult ratio reintroduced hihi

  • However, our modeling suggests that slight further declines in adult survival and the proportion of female hatchlings, alone or in concert, threaten this population with extinction.
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  • Ewen thorogood armstrong demographic consequences adult ratio reintroduced hihi

Ewen thorogood armstrong demographic consequences adult ratio reintroduced hihi -- expedition


Although we can explain why such behaviours may evolve and have studied their impacts on individuals when it does, we know very little about the demographic consequences of harassment caused by changes in adult sex ratio. Skip to main content.

ewen thorogood armstrong demographic consequences adult ratio reintroduced hihi

Travel Seoul: Ewen thorogood armstrong demographic consequences adult ratio reintroduced hihi

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Adults single adult life groups ArmstrongKevin A. Load more View all tweets. Current address: Department of Biology, Virginia Commonwealth University, Richmond, Virginia, United States of America. Mann ME, Zhang Z, Hughes MK, Bradley RS, Miller SK, et al. Regardless, the capacity for tuatara on North Brother Island to reverse the male-bias in the population is limited. Juvenile tuatara are difficult to detect and are infrequently caught. Article metrics are unavailable at this time.
Ewen thorogood armstrong demographic consequences adult ratio reintroduced hihi Reduced body condition also contributes to the next component of the extinction vortex: decreased survival. Wapstra E, Uller T, Sinn DL, Olsson M, Mazurek K, et al. We provide a case study of a male-biased sex ratio massages perth sexual massage the conditions for extinction in a natural population of tuatara Sphenodon punctatus on North Brother Island in the Cook Strait of New Zealand. Anthropogenic climate change worsens the situation for this isolated population, as projected temperature increases for New Zealand are expected to further skew the hatchling sex ratio towards males. We thank Glenice Paine, Pete Gaze, and Charles Daugherty for their support. Second, we found a male bias in newly captured tuatara over the last decade, a cohort that likely represents juveniles reaching maturity.
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