Peel-Harvey landholders are being asked to collect rabbit blood samples this summer, after new evidence suggests most local rabbits may now be immune to a key biocontrol tool, calicivirus. Testing by the Peel Harvey Biosecurity Group (PHBG) earlier this year found that two-thirds of sampled rabbits carried antibodies to one or both strains of calicivirus. That means a broad release of the virus would likely have little effect on rabbit numbers. PHBG Executive Officer Teele Hooper-Worrell said the group now needs a much larger pool of samples to identify where the virus could still make a difference when released late this summer. “Each year we plan staged calicivirus releases across the Peel-Harvey region,” she said. “The study we did last summer was small but showed high resistance levels. To achieve the most effective impact this season, we need more samples from more properties.” PHBG is calling on local shooters, whether landholders or professionals, to pick up a free ‘shoot...