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VERSION:2.0
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CALSCALE:GREGORIAN
X-WR-CALNAME:HMSC Research Seminar-Making lemons out of lemonade: Sorting o
 ut the taxonomy of South Asian river dolphins (Platanista spp.) from multi
 ple lines of evidence.
X-WR-TIMEZONE:Pacific Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20260517T213910Z
UID:tag:localist.com\,2008:EventInstance_34071005338492
DTSTART:20201203T113000Z
DTEND:20201204T003000Z
DESCRIPTION:Speaker: Dr. Eric Archer\, Leader Marine Mammal Genetics Progra
 m\, Marine Mammal and Turtle Division\, Southwest Fisheries Science Center
 \n\nTopic: Making lemons out of lemonade: Sorting out the taxonomy of Sout
 h Asian river dolphins (Platanista spp.) from multiple lines of evidence.\
 n\nSouth Asian River dolphins (Platanista gangetica) are among the most en
 dangered of the world’s cetaceans. The two subspecies in the family Plat
 anistidae\, Indus and Ganges River dolphins (P. g. minor and P. g. gangeti
 ca)\, are both threatened by dams and barrages\, declining river flows\, f
 isheries bycatch and pollution. We examine differences in external and sku
 ll morphology between dolphins in each river system to clarify their taxon
 omic status. Skulls from each river system could easily be differentiated 
 using diagnostic differences in the shape of the frontal bones behind the 
 nasals. This feature was present in all individuals irrespective of size\,
  age and sex. Ganges River dolphins are sexually dimorphic with females la
 rger than males\, but there was no evidence of dimorphism in the small sam
 ple of Indus River dolphins. There were no mitochondrial DNA haplotypes sh
 ared between the two river systems\, and five fixed differences suggested 
 a long-term (approximately 0.55 million years) absence of gene flow. Diagn
 osable differences in morphological and genetic characteristics indicate l
 ong-term reproductive as well as geographic isolation of Indus and Ganges 
 River dolphins. We therefore propose their recognition as distinct species
 : Platanista minor (Owen\, 1853) and Platanista gangetica (Lebeck\, 1801).
  \n\nLink: https://oregonstate.zoom.us/j/94555731151?pwd=RnJ6eVg0ODdzRUpVc
 0pQbUlIdUV3dz09
LOCATION:
SUMMARY:HMSC Research Seminar-Making lemons out of lemonade: Sorting out th
 e taxonomy of South Asian river dolphins (Platanista spp.) from multiple l
 ines of evidence.
URL;VALUE=URI:https://events.oregonstate.edu/event/hmsc_research_seminar-er
 ic_archer_program_leader_marine_mammal_genetics_group_southwest_fisheries_
 science_center_nmfsnoaa
CATEGORIES:Lecture or Presentation
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