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6 results for “Pterois miles”
Ecological Drivers of Invasive Lionfish (Pterois volitans and Pterois miles) Distribution Across Mesophotic Reefs in Bermuda
<p>The data and code in this document were obtained using diver-led visual surveys of mesophotic reef sites to examine how variations in potential ecological drivers may affect lionfish distribution on mesophotic reefs in Bermuda. These data and code were used for analysis and figure preparation in association with publication in Frontiers in Marine Science (Goodbody-Gringley et al. 2019). </p>
No evidence that lionfish Pterois miles coordinate and reciprocate during hunts
<p><span>Collaborative hunting can be defined as predators coordinating their movements in time and space, assuming different roles in catching prey. As lionfishes are naturally solitary hunters; an experimental study documenting active recruitment, coordination and alternating (potentially reciprocal) striking in dwarf lionfish <em>Dendrochirus zebra</em> received major attention. A hypothesis was that collaborative hunting may contribute to the successful invasion of another lionfish species, <em>Pterois miles</em>, in the Caribbean. A first study on <em>P. miles</em> in the native range, the Red Sea did not find evidence for any recruitment signaling. Here, we expand on these results, testing for coordinated movements and for alternation in strikes. We exposed subject pairs to inaccessible prey in three transparent housings. The two lionfish did not aggregate at the same prey housing or even share larger space units in the presence of prey. In a second experiment, we found that some alternation can be induced if prey items become alternatingly accessible at two corners, with each lionfish tending to monopolise one corner each. When the movement of prey is slow or even absent, we observed less alternation than expected by chance. In conclusion, <em>P. miles</em> in the Red Sea does not use any coordination to hunt prey.</span></p>
No evidence that lionfish Pterois miles coordinate and reciprocate during hunts
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No evidence for conspecific recruitment for cooperative hunting in lionfish Pterois miles
Lionfish are common piscivores in the Indo-Pacific and invasive in the Caribbean. A fin flaring pattern, involving a rapid undulation of the caudal fin and sequential turning of both pectoral fins, was described in zebra lionfish as a signal to initiate cooperative hunting, and it was hypothesized that such hunting tactics may also exist in other lionfish species and contribute to their successful invasion in the Caribbean. Here, we investigated one of those invasive species, <i>Pterois miles</i>, in its natural range in the Red Sea. We did not observe evidence for cooperative hunting in the field. We complemented field observations with a laboratory experiment aimed at inducing subjects to recruit partners for cooperative hunts, exposing subjects to inaccessible prey in a transparent housing as well as to a potential partner. We regularly observed the fin flaring pattern, but importantly it was not directed at the partner. Thus, rather than being a signal, the fin flaring movement pattern seems to be a swimming mode in a confined environment. Furthermore, the two lionfish did not aggregate at the prey housing, reinforcing the field results that this species in the Red sea does not depend on cooperation to hunt fish.
Data from: Camouflage in motion: Testing for background choice in a stalking predator (lionfish, <em>Pterois miles</em>)
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No evidence for conspecific recruitment for cooperative hunting in lionfish Pterois miles
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