Giraffe genetics & taxonomy

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• Kenya’s Giraffes Remain Distinct Despite Past Interbreeding

  Genomes from Kenya show how occasional interbreeding left traces in giraffe ancestry while northern, reticulated and Masai giraffes remained distinct.

  8 min read

• The few trees that carried a Kalahari giraffe diet

  Fifteen months of observations showed a Kalahari giraffe population relying on four trees, with evergreen browse gaining importance as other leaves fell.

  7 min read

• Uganda's new giraffe populations took years to begin

  Long-term monitoring in Uganda found that introduced giraffes began breeding after a roughly three-year wait, revealing how recovery should be judged.

  7 min read

• The Mobile DNA Still Copying Itself in Giraffe Genomes

  A comparison of 48 giraffe genomes reveals which mobile DNA families still spread, and how their insertions preserve evolutionary history.

  5 min read

• Giraffe Gene Changes Protected Mice From Hypertension

  Seven giraffe-specific changes in one gene altered blood-pressure responses and bone structure in mice, testing a clue from comparative genomes.

  5 min read

• A Newborn Giraffe Already Has an Adult-Like Arterial Map

  CT reconstructions of three giraffe heads reveal an adult-like brain blood-supply pattern at birth, alongside changes around developing ossicones.

  5 min read

• A Four-Ossicone Giraffid Rewrites a Fossil Family Branch

  Rich fossils from Spain revealed Decennatherium rex, connecting its four-ossicone headgear and skeleton with the history of giant extinct giraffids.

  5 min read

• Different Diets Left Different Microbial Communities in Giraffes

  A seven-giraffe study found rumen microbial communities clustered by recent diet, while fluid and solid samples showed less overall separation.

  5 min read

• Which freezing mixtures keep giraffe sperm moving?

  A seven-giraffe comparison found that freezing mixtures changed sperm movement after thawing, while showing why movement alone cannot establish fertility.

  5 min read

• The okapi genome and the rearranged giraffe chromosomes

  A more continuous okapi genome revealed striking chromosome differences from giraffes, showing why close relatives need not share the same DNA packaging.

  5 min read

• A Giraffe’s Enlarged Thyroid Reveals a Bacterial Clue

  A fatal illness in one zoo giraffe linked an enlarged thyroid with bacterial and toxin evidence, opening a question about how the disease developed.

  7 min read

• DNA Narrows the Search for Giraffe Skin Disease’s Cause

  Microscopy and DNA from ten giraffes in Tanzania reveal a parasitic worm in damaged skin, giving researchers a clearer lead on an unresolved disease.

  7 min read

• Arusha’s Giraffe Census Revealed a Forty-Year Loss

  Photographic identification found a major decline in Arusha’s giraffes, while shared maternal DNA preserved evidence of an older connected landscape.

  8 min read

• A Photo Census Put Cameroon’s Giraffes Back in View

  Photographs identified two small Kordofan giraffe populations in Cameroon, providing a monitoring baseline without proving growth or complete isolation.

  8 min read

• Why Losing Two Giraffes Could Endanger a Small Population

  A Bénoué population model found severe consequences from occasional adult losses, while showing which uncertain demographic measurements matter most.

  9 min read

• After Release, Did the Giraffes Make a Home?

  Tracking six giraffes after translocation distinguished repeated use of a home area from prolonged exploration, offering an early but limited success measure.

  9 min read

• Why Early Giraffe Population Growth Can Mislead

  Giraffe translocation simulations showed that early growth can conceal later demographic and genetic losses, changing what counts as a successful release.

  9 min read

• Male Giraffes Spar With a Preferred Side

  A field study followed male giraffe sparring, finding size-matched partners and strong individual side preferences without proving future fighting success.

  5 min read

• The Feeding Encounters That Revealed Giraffe Rank

  Repeated yielding at feeding time revealed ordered relationships in captive giraffes, with age and stable female ranks complicating an egalitarian image.

  5 min read

• What Vision Genes Reveal About Giraffes and Okapis

  A comparison of 36 vision genes found clues to differences in giraffe and okapi eyes, including a predicted shift in a light-sensitive pigment.

  6 min read

• How a Giraffe Can Have Mixed Ancestry and Be Inbred

  Whole-genome comparisons of 13 zoo giraffes show why mixed ancestry and a high average level of genetic variation can coexist with recent inbreeding.

  6 min read

• Why a Giraffe Population Crash Can Hide in Its DNA

  Northern giraffe genomes revealed long population declines and differing inbreeding histories, but did not clearly recover one recent population crash.

  6 min read

• Can One Neck Bone Reconstruct an Extinct Giraffe?

  An isolated vertebra and mismatched limb estimates expose the assumptions behind reconstructing the size and shape of the fossil giraffe Giraffa sivalensis.

  7 min read

• What a growing giraffe neck teaches fossil modellers

  A newborn and an adult giraffe helped test how changing joint geometry affects attempts to reconstruct the movements of a sauropod neck.

  6 min read

• Giraffes With Diarrhoea Had Different Gut Microbes

  A study of twelve zoo giraffes found different bacterial and fungal communities in animals with diarrhoea, raising questions about cause and recovery.

  6 min read

• Nakuru’s Giraffes Changed Meals More Than Mealtimes

  Observations at Lake Nakuru found a seasonal shift in one important giraffe food, while the overall share of time spent feeding changed little.

  5 min read

• Giraffe Genetic Boundaries Follow Different Rain Calendars

  A study of East African giraffe genetics found that the timing of rain distinguished regional groups better than several other habitat measures.

  5 min read

• Different Tests Revealed a Virus in Giraffe Skin Growths

  Microscopy, protein staining and DNA tests found papillomavirus evidence in giraffe skin growths, but the methods did not give identical results.

  5 min read

• Putting the Giraffe Genome Back Into Chromosomes

  A chromosome-scale giraffe genome combined DNA sequencing with physical maps, showing why reading genetic letters is only part of the problem.

  5 min read

• A Giraffe Coronavirus Crossed Into Cattle in an Experiment

  A coronavirus from an Ohio giraffe caused disease in experimental calves, while its genome and antibody reactions linked it closely to cattle viruses.

  5 min read

• A Giraffe Calf’s Social Circle Resembled Its Mother’s

  In a Senegalese reserve, giraffe mothers with stronger associations also had calves that spent more time together, revealing a shared social pattern.

  5 min read

• Male Giraffes Shift Between Short Courtship Phases

  Field observations and dung samples in Zimbabwe linked mature male giraffes’ changing courtship activity to hormone changes over days and weeks.

  5 min read

• Giraffe Companions Were More Likely to Share Gut Bacteria

  Researchers compared giraffe associations with independently measured bacterial types to test what a social network can reveal about microbial sharing.

  5 min read

• Two DNA Histories Changed the Map of Southern Giraffes

  Whole genomes revealed why a maternal DNA marker could place southern giraffe populations differently, uncovering mixed ancestry and past connections.

  6 min read

• Giraffe Skull Shapes Reveal More Than Size and Sex

  A study of 515 giraffe skulls separated growth and sex differences from species patterns, revealing how distinctive head shapes support genetic evidence.

  6 min read