The study of the timing of recurring biological events throughout an organism's life is known as phenology (parmesan & yohe 2003) the way organisms respond to climate change through altered timing offers insight into their sensitivity and adaptability (parmesan & yohe 2003. A study led by st jude children's research hospital scientists found the avian influenza a h3n8 virus that killed harbor seals along the new england coast can spread through respiratory droplets. The harbor seal's scientific name, phoca vitulina, means calf-like seal harbor seals are easily identified by the spotted coloring on their fur and their dog-like faces there are five subspecies of harbor seal, separated geographically. She is collaborating with wdfw biologists on her master's project to study pup rearing success of female harbor seals at a long-term study site in south puget sound her research will study how the success of known females relates to age, body mass, pupping experience and pup care behaviors of the mother. Study of harbor seal and dog kidneys nicholas a halasz, robert elsner, robert s garvie, and guy t grotke department of surgery, university of california, sun diego school of medicine, san diego, california 92103, and.
Forced copulation of harbor seals by sea otters 333 contact, male sea otters were observed to haul-out near resting harbor seals and prevent them from. Harbor seal facts pacific harbor seals are the most common marine mammal in puget sound, and their populations are healthy seals share a common ancestor with dogs and bears and have upper and lower arms and legs concealed within their skin. The harbor seal (phoca vitulina) is a small, stocky phocid seal found throughout the temperate and arctic waters of the northern hemisphere, and has the widest distribution of any pinniped. One study of three species—the harbor seal, california sea lion and northern elephant seal—found that the sea lion was best adapted for airborne hearing, the harbor seal was equally capable of hearing in air and water, and the elephant seal was better adapted for underwater hearing.
The harbor seal density of almost 3 harbor seals per square kilometer of ocean possibly one of the most dense harbor seal populations in the world assessments of population size are usually carried out via aerial surveys of. Appearance harbor seals are part of the true seal family all true seals have short forelimbs, or flippers they also lack external ear flaps and instead have a small hole (opening to the ear canal) on either side of their head. Before 1900, the gulf of alaska harbor seal population may have been over 500,000 today there are about 150,000 harbor seals in the gulf archaeological and historical information on human hunting patterns from ad 1500-1900, combined with alaska native oral traditions and contemporary observations, can provide a baseline for modeling long-term seal population history. Harbor seals are relatively small animals, with adults 17-19 m long males are slightly larger than females harbor seals vary in color from very light gray or tan to brown to almost black, with extensive spotting.
Having harbor seals at marine zoological parks provides the opportunity for the public to learn about these animals and how human activities may impact their survival in the protected environment of a marine zoological park, scientists can examine aspects of harbor seal biology that are difficult or impossible to study in the wild. Case in harbor seals on sable island, we designed our study to minimize the confounding effect of initial body mass by selecting for cross-sectional analysis 13 females whose mass at parturition was within a narrow range. California from 2003-2005 for the present study 2 locations of live harbor seals sampled in central and northern california 74 from 2003-2005 for the present study. A love for pinnipeds and their importance to our marine ecosystem led st francis college psychology professor kristy biolsi to forge a partnership with the long island aquarium to study sea lions. A study led by st jude children's research hospital scientists found the avian influenza a h3n8 virus that killed harbor seals along the new england coast can spread through respiratory droplets and poses a threat to humans.
Artificial whisker reveals source of harbor seal's uncanny prey-sensing ability study finds a whisker's 'slaloming' motion helps seals track and chase prey. On harbor seals in the aleutian islandsusing small boats and tangle nets,the team captured 15 seals in clam lagoon,located in the northeast corner of adak islandthe sex composition was 10 females and 5 males,and by age-class was 9 adults,5 sub-adults,and 1 weaned pupall seals were examined. Seal meal a harbor seal digs its claws into a salmon sea lions and some other seal species have sturdy flippers instead of paws, and so can't grasp prey in this way a new study finds.
The number of harbor seals grew rapidly following their federal protection from hunting and culling in both canada and the united states, the study says, increasing from a few thousand in the late 1960s to over 40,000 in 2008 in the strait of georgia in southern british columbia. Harbor seals eat both adult and juvenile salmon, but the adults they target in the autumn are from healthier stocks of fish (of less conservation concern) than the juveniles they target in the spring, according to a recent study of prey preferred by harbor seals in the straits of georgia in british. The alaska harbor seal research plan is a consolidated research plan for all nmfs-funded harbor seal research the plan facilitates effective coordination and evaluation. A new seadoc study will try to find out if rehabilitated seals survive at the same rate as wild-weaned seals, if they have similar movement patterns, and if they even remain in the salish sea it costs about $3,000 to rehabilitate a harbor seal pup.
Pacific harbor seals are found north of the equator in both the atlantic and pacific oceans in the northeast pacific, they range from alaska to baja california, mexico they favor near-shore coastal waters and are often seen on rocky islands, sandy beaches, mudflats, bays, and estuaries. Harbor seals in the pacific ocean are distributed along 16,00km of coastline across the north pacific rim from hokkaido, japan northward to the kamchatka peninsula, eastward across the aleutian islands, southern bering sea and gulf of alaska, and southward to baja california, mexico. Harbor seal tagging in may 2014, 30 female harbor seals were captured in tracy arm and radio tags were temporarily attached to their fur (for approximately 2-3 months.