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Density-Dependent Condition And Growth Of Invasive Lionfish In The Northern Gulf Of Mexico, Kristin A. Dahl, Morgan A. Edwards, William F. Patterson Iii
Density-Dependent Condition And Growth Of Invasive Lionfish In The Northern Gulf Of Mexico, Kristin A. Dahl, Morgan A. Edwards, William F. Patterson Iii
C-IMAGE Publications
Absent natural population control, invasive red lionfish Pterois volitans (hereafter, lionfish) have reached record densities in the northern Gulf of Mexico (nGOM), though the role of density dependence on their population dynamics remains poorly understood. This study examined the effects of population density, sex, and habitat on lionfish condition (i.e. mass relative to total length) and size-at-age. Lionfish density was estimated with a remotely operated vehicle during 2010-2017 at a series of nGOM natural (n = 16) and artificial (n = 22) reefs, and individual lionfish (n = 3296) were sampled at additional reefs in the same system between 2013 …
Experimental Assessment Of Lionfish Removals To Mitigate Reef Fish Community Shifts On Northern Gulf Of Mexico Artificial Reefs, Kristin A. Dahl, William F. Patterson Iii, Richard A. Synder
Experimental Assessment Of Lionfish Removals To Mitigate Reef Fish Community Shifts On Northern Gulf Of Mexico Artificial Reefs, Kristin A. Dahl, William F. Patterson Iii, Richard A. Synder
C-IMAGE Publications
Substantial declines in reef fishes were observed at northern Gulf of Mexico artificial reef sites between 2009−2010 and 2011−2012, a period that bracketed the appearance of invasive lionfish in this ecosystem. Small demersal reef fishes, the predominant prey of lionfish in other systems, displayed the greatest declines. However, a confounding factor during this time was the Deepwater Horizon Oil Spill (DWH) in summer 2010. In some areas, targeted lionfish removals have been demonstrated to mitigate negative effects on native fishes. Therefore, we conducted a 2 yr experiment to examine the effectiveness and ecological benefits of targeted lionfish removals at artificial …
Habitat-Specific Density And Diet Of Rapidly Expanding Invasive Red Lionfish, Pterois Volitans,, Populations In The Northern Gulf Of Mexico, Kristen A. Dahl, William F. Patterson Iii
Habitat-Specific Density And Diet Of Rapidly Expanding Invasive Red Lionfish, Pterois Volitans,, Populations In The Northern Gulf Of Mexico, Kristen A. Dahl, William F. Patterson Iii
C-IMAGE Publications
Invasive Indo-Pacific red lionfish, Pterois volitans, were first reported in the northern Gulf of Mexico (nGOM) in summer 2010. To examine potential impacts on native reef fish communities, lionfish density and size distributions were estimated from fall 2010 to fall 2013 with a remotely operated vehicle at natural (n = 16) and artificial (n = 22) reef sites. Lionfish (n = 934) also were sampled via spearfishing to examine effects of habitat type, season, and fish size on their diet and trophic ecology. There was an exponential increase in lionfish density at both natural and artificial reefs over the study …