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Biology subjects

Leipold, E.

Publications and source records attributed to Leipold, E..

2 recordsLinked to original sources

Wildlife feeding increases risk of male wild turkeys (Meleagris gallopavo) to hunter harvest

Wildlife feeding during the wild turkey (Meleagris gallopavo) hunting season is legal in many states within the United States, but hunting turkeys with the aid of bait is unlawful in most states. The most common policy to prevent wildlife feeding from acting as bait is to restrict hunting within a defined radius. However, the effect of wildlife feeders on turkey harvest risk and the effectiveness of distance restrictions on mitigating that influence have not been investigated. During 2024-2025, we used GPS transmitters to track 30 adult male turkeys during the spring hunting season on private land with active feeders in Florida, USA, where hunting turkeys within a 91 m radius of a feeder was unlawful. We used Cox proportional hazard models to link risk of hunter harvest with unique feeders visited daily, number of feeders within a home range, and average morning distance and roosting distance to feeders at multiple temporal scales. Hunters harvested 53% of the tagged turkeys. Risk of hunter harvest increased with the number of unique feeders visited the previous day and after the first three days of hunting season with the number of active feeders within a home range. As distance from the most recent roost site and average morning distance to a feeder decreased, risk of hunter harvest increased. We estimated that risk of hunter harvest would be reduced by over 50% if distance restrictions were increased from 100 m to 200 m, by nearly 75% with an increase from 100 m to 300 m, and by nearly 90% with an increase from 100 m to 500 m. To completely eliminate the influence of wildlife feeders on risk of hunter harvest would require a restriction distance well beyond a 500m radius, which is impractical given that this radius would result in an area twice the average private landowner property size in the region. Thus, if wildlife feeding during the turkey hunting season is to be allowed, it will act as bait, in which case, the acceptable level of its influence as bait can be achieved with the appropriate hunting radius restriction.

ecology↗

Satellite glial cells from adult DRG dedifferentiate in vitro and can be reprogrammed into nociceptor-like neurons

In dorsal root ganglia (DRG), neuronal loss has been reported in patients with neuropathic pain, raising the question of whether the DRG, as part of the peripheral nervous system (PNS), harbor an endogenous cell source for neural repair. We found that adult mouse DRG harbor glial cells that dedifferentiate in vitro into Sox2/Sox10-positive glial progenitor-like cells. Coexpression of the developmental transcription factors Neurog1 and Neurog2 was sufficient to induce both neuronal and glial phenotypes. Nerve growth factor supported the maturation of a subset of neurons into nociceptor-like cells expressing functional TrpA1, TrpV1, and TTX-resistant NaV channels. We report the limitation that we miss factors allowing consistent maturation to the sensory neuron profile. In summary, in the PNS, adult DRG-derived glial cells can acquire neural progenitor-like properties, show bipotent reprogramming competence, and may serve as an intrinsic cell source for sensory circuit regeneration.

neuroscience↗