Density-dependent growth as a key mechanism in the regulation of fish populations: evidence from among-population comparisons

Lorenzen, Kai; Enberg, Katja

doi:10.1098/rspb.2001.1853

Cited by 409 publications

(395 citation statements)

References 27 publications

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“…For example, fisheries‐induced evolution can be buffered by negative density dependence in somatic growth rate that is the outcome of intraspecific competition for limiting resources (Dunlop et al., 2015; Gobin et al., 2016). On the one hand, Healey (1980) provides experimental evidence of fisheries‐induced, negative density‐dependent growth at the whole lake level in small lakes, and Lorenzen and Enberg (2002) discuss more generally the importance of considering negative density‐dependent growth as a population regulation mechanism in fish populations. On the other hand, Gobin et al.…”

Section: Discussionmentioning

confidence: 99%

Size‐selective fishing and the potential for fisheries‐induced evolution in lake whitefish

Morbey

Mema

2018

Evolutionary Applications

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The long‐term evolutionary effects of fishing on maturation schedules can depend on gear type, the shape of the gear type's size‐selectivity function, and the size and age structure of a population. Our goal was to better understand how environmentally induced differences in somatic growth influence the evolutionary effects of size‐selective fisheries, using lake whitefish (Coregonus clupeaformis) in Lake Huron as a case study. Using a state‐dependent optimization model of energy allocation parameterized for lake whitefish, we show that fishing with gill nets (bell‐shaped selectivity) and trap nets (sigmoid‐shaped selectivity) can be potent agents of selection on size thresholds for maturity. Compared to trap nets and large mesh (114 mm) gill nets, small mesh (89 mm) gill nets are better able to buffer populations from fishing‐induced evolution by safeguarding large, fecund fish, but only when overall fishing mortality is low and growth rates sufficiently fast such that fish can outgrow vulnerable size classes. Regardless of gear type, and all else being equal, high fishing mortality in combination with low growth rates is expected to intensify the long‐term evolutionary effects of fishing.

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Section: Discussionmentioning

confidence: 99%

Size‐selective fishing and the potential for fisheries‐induced evolution in lake whitefish

Morbey

Mema

2018

Evolutionary Applications

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“…This uncertainty is attributable to the role that fishing plays in density-dependent population regulation (Shepherd and Cushing 1980;Myers 1995;Lorenzen and Enberg 2002), and whether F ? M is sufficiently high to override natural population regulators such as habitat limitation.…”

Section: Fishing and Its Effect On Productionmentioning

confidence: 99%

Red snapper management in the Gulf of Mexico: science- or faith-based?

Cowan

Grimes

Patterson

et al. 2010

Rev Fish Biol Fisheries

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The most controversial fishery in U.S. waters of the Gulf of Mexico (Gulf) is for northern red snapper Lutjanus campechanus, which collapsed in the late 1980s when stock biomass became too low to be fished commercially in the eastern Gulf. 123Rev Fish Biol Fisheries (2011) 21:187-204 DOI 10.1007 of red snapper in the Gulf, which in turn has strained the relationship between science, management, and stakeholders there. We provide a simple empirical argument and alternate interpretations of a recently published perspective on the historical fishery of red snapper in the Gulf to conclude that the preponderance of evidence used in the agency stock assessment process, and the simple arguments made here, do not support the perspective that the red snapper stock has increased in size sufficiently to defer compliance with the MSRA.

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“…Correlation coefficients of various population indices of sand shiner sampled from 15 populations in non-wadeable rivers in Iowa, 2007 -2008. Indices include catch-per-unit-effort (CPUE = number of fish1100 m trawling), mean back-calculated length at age 1 (BCI), mean back-calculated length at age 2 (BC2), mean back-calculated length at age 3 (BC3), total annual mortality (A), age-specific mortality between age 1 and age 2 (A1-z), age-specific mortality between age 2 and age 3 (Az-3), and recruitment variability index (RVI Lorenzen and Enberg 2002), particularly for juvenile fishes (Post et al 1999). While studies on density-dependent growth in sand shiner populations are unavailable, there is evidence that density-dependent interactions may be important for small-bodied cyprinids in the Great Plains.…”

Section: Data Anafysismentioning

confidence: 99%

Population Dynamics of the Sand Shiner (Notropis stramineus) in Non-Wadeable Rivers of lowa

Smith¹,

Neebling²,

Quist³

2010

Journal of Freshwater Ecology

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The sand shiner (Notropis stramineus) is a common cyprinid found throughout the Great Plains region of North America that plays an important ecological role in aquatic systems. This study was conducted to describe population dynamics of sand shiners including age structure, growth, mortality, and recruitment variability in 15 non-wadeable rivers in Iowa. Fish were collected during June-August (2007-2008) using a modified Missouri trawl, a seine, and boat-mounted electrofishing. Scales were removed for age and growth analysis. A total of 3,443 fish was sampled from 15 populations across Iowa, of which 676 were aged. Iowa's sand shiner populations consisted primarily of age-1 fish (53% of all fish sampled), followed by age-2 fish (30%), age-0 fish (IS%), and age-3 fish (2%). Sand shiners grew an average of 38.5 mm (SE = 5.7) during their first year, 13.8 mm (4.5) during their second year, and 9.0 mm (6.9) during their third year. Total annual mortality varied from 35.0% to 92.3% among populations with a mean of 77.9% (0.2). Incremental mortality rates were 84.5% (0.2) between age 1 and age 2, and 92.0% (0

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Density-dependent growth as a key mechanism in the regulation of fish populations: evidence from among-population comparisons

Cited by 409 publications

References 27 publications

Size‐selective fishing and the potential for fisheries‐induced evolution in lake whitefish

Size‐selective fishing and the potential for fisheries‐induced evolution in lake whitefish

Red snapper management in the Gulf of Mexico: science- or faith-based?

Population Dynamics of the Sand Shiner (Notropis stramineus) in Non-Wadeable Rivers of lowa

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