How many extant pinniped species remain to be described?
نویسندگان
چکیده
How many extant pinniped species remain to be described? Michael A. Woodley a , Darren Naish b & Hugh P. Shanahan c a School of Biological Sciences, Royal Holloway, University of London, Egham, Surrey, TW20 0EX, UK b School of Earth and Environmental Sciences, University of Portsmouth, Portsmouth, PO1 3QL, UK c Department of Computer Science, Royal Holloway, University of London, Egham, Surrey, TW20 0EX, UK
منابع مشابه
Pinniped phylogeny and a new hypothesis for their origin and dispersal.
The relationships and the zoogeography of the three extant pinniped families, Otariidae (sea lions and fur seals), Odobenidae (one extant species, the walrus), and Phocidae (true seals), have been contentious. Here, we address these topics in a molecular study that includes all extant species of true seals and sea lions, four fur seals and the walrus. Contrary to prevailing morphological views ...
متن کاملSurvival of adult Steller sea lions in Alaska: senescence, annual variation and covariation with male reproductive success
Population dynamics of long-lived vertebrates depend critically on adult survival, yet factors affecting survival and covariation between survival and other vital rates in adults remain poorly examined for many taxonomic groups of long-lived mammals (e.g. actuarial senescence has been examined for only 9 of 34 extant pinniped species using longitudinal data). We used mark-recapture models and d...
متن کاملArctic marine mammals and climate change: impacts and resilience.
Evolutionary selection has refined the life histories of seven species (three cetacean [narwhal, beluga, and bowhead whales], three pinniped [walrus, ringed, and bearded seals], and the polar bear) to spatial and temporal domains influenced by the seasonal extremes and variability of sea ice, temperature, and day length that define the Arctic. Recent changes in Arctic climate may challenge the ...
متن کاملMarine mammal bycatch in gillnet and other entangling net fisheries , 1990 to 2011
Since the 1970s the role of fishery bycatch as a factor reducing, or limiting the recovery of, marine mammal populations has been increasingly recognized. The proceedings of a 1990 International Whaling Commission symposium and workshop summarized fishery and bycatch data by region, fishery, and species, and estimated the significance of the ‘impacts’ of bycatch in passive gear on all cetacean ...
متن کاملCurrent and Future Patterns of Global Marine Mammal Biodiversity
Quantifying the spatial distribution of taxa is an important prerequisite for the preservation of biodiversity, and can provide a baseline against which to measure the impacts of climate change. Here we analyse patterns of marine mammal species richness based on predictions of global distributional ranges for 115 species, including all extant pinnipeds and cetaceans. We used an environmental su...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2012