charismatic+megafauna - The Florida Panther: Applying...

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The Florida Panther: The Florida Panther: Applying Population Applying Population Genetics to Species Conservation Genetics to Species Conservation
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One of more than 20 subspecies of cougar Cougar Subspecies in North America  Cougar Subspecies in South America  subspecies common name subspecies common name couguar Eastern cougar concolor Brazilian cougar schorgeri Wisconsin cougar bangsi Colombian cougar missoulensis Missoula cougar soderstromi Ecuador cougar hippolestes Colorado cougar discolor Amazon cougar oregonensis Oregon cougar incarum Incan cougar vancouverensis Vancouver Island cougar osgoodi Bolivian cougar californica California cougar acrocodia Mato Grosso cougar kaibabensis Kaibab cougar puma Chilean puma browni Yuma puma cabrerae Argentine puma improcera Baja California cougar pearsoni Pearson's puma azteca Mexican cougar patagonica Patagonia puma stanleyana Texas cougar araucanus Andes puma coryi Florida panther Source: Busch 1996 mayensis Mayan cougar costaricensis Costa Rican puma
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Why are they endangered? Road kill Hunting Habitat loss Increased intraspecific aggression (mortality from other cats)
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Why genetic rescue? I. Range loss II. Small populations Inbreeding III. Increase in genetically compromised individuals IV. Decline in population growth rate *Prevent extinction by reducing inbreeding depression*
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Why are smaller populations bad? Genetic Drift ( some alleles are lost as others become fixed in populations ) V=p(1-p)/2N Variance in allele frequency after one generation Susceptible to environmental and demographic fluctuations Inbreeding Depression (lower fitness due to increase in rare homozygous recessive traits)
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What do molecular markers reveal? Allozymes mT DNA DNA Fingerprinting with micro-satellites These studies showed that the Florida Panther had less molecular genetic variability than any puma subspecies.
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Mitochondrial DNA Restriction Fragment Length Polymorphism (RFLP) indicated that genetic variation in the Florida panther is limited to two highly divergent haplotypes A and B. Highly variable genetic markers in mitochondria are sequences in the intergenic control region.
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MT DNA reveals 2 types of panthers Type A : confined to largely native Florida panthers ( F. concolor coryi ): represents single genotype descended from the ancestors. Type B : derived from captive-bred hybrid panther subspecies that was released to Everglades. Likely that before introduction of this Everglades stock, the descendants of the historic Florida panther had their mtDNA variation reduced to a single mtDNA haplotype, type A. This level of mtDNA variation is the lowest reported in any similarly studied feline population, such as leopards, cheetahs etc.
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Variant forms of an enzyme that are coded for by different alleles at the same locus. Run at different rate due to size and charge.
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charismatic+megafauna - The Florida Panther: Applying...

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