Eurasian perch <i>Perca fluviatilis</i> growth and fish community structure, inside and outside a marine‐protected area in the Baltic Sea

Nelson, T. Reid; Jefferson, Amanda E.; Cooper, Pearce T.; Buckley, Carol Anne; Heck, Kenneth L.; Mattila, Johanna

doi:10.1111/fme.12277

Cited by 6 publications

(4 citation statements)

References 60 publications

(125 reference statements)

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“…First, unknown sex observations were omitted from the fractional age data. Then, eight candidate versions of each growth model (VBGF, Gompertz and logistic) were fit to the remaining (female and male) fractional age data: a general version, which allowed all three growth parameters ( L ∞ , k or g , and t 0 or α ) to vary between sexes; three versions that allowed two of the three parameters to vary between sexes; three versions that allowed only one parameter to vary between sexes; and a common version, which held all three parameters constant between sexes (Jefferson et al, 2019; Nelson et al, 2018; Ogle, 2016). Akaike's information criterion was used to rank the fit of all 24 resulting model versions; the version with the smallest AIC value and greatest Akaike weight was chosen as the best‐fitting version (Akaike, 1998; Katsanevakis & Maravelias, 2008; Ogle, 2016).…”

Section: Methodsmentioning

confidence: 99%

Age, growth and diet of crevalle jack (Caranx hippos) in the Gulf of Mexico

Jefferson

Jargowsky

Ivec

et al. 2022

Fisheries Management Eco

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The goals of this study were to generate baseline population dynamics parameters for Gulf of Mexico crevalle jack Caranx hippos and examine the foraging habits of Mississippi and Alabama crevalle jack. Specimens were collected from Mississippi, Alabama and Florida, and age was estimated from sagittal otoliths. Stomachs from some specimens were retained for dietary analyses. Age classes spanned 0-20 years.Overall growth was best represented by the logistic growth model, whereas sexspecific growth was best represented by a version of the von Bertalanffy growth function that allowed L ∞ to vary by sex while holding k and t 0 constant between sexes.Fishes were more important to crevalle jack diet than invertebrates, and diet varied among locations and years. These findings will address fundamental knowledge gaps to inform age-based stock assessments for crevalle jack and ecosystem approaches to fisheries management in the Gulf of Mexico.

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Section: Methodsmentioning

confidence: 99%

Age, growth and diet of crevalle jack (Caranx hippos) in the Gulf of Mexico

Jefferson

Jargowsky

Ivec

et al. 2022

Fisheries Management Eco

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“…Sex-specific growth was also modeled using the VBGF for both otolith-and spine-based fractional age data. Eight candidate versions of the VBGF were fitted to the sex-specific data: a general version, which allowed all three parameters (L ∞ , k, and t 0 ) to vary between sexes; three versions that allowed two of the three parameters to vary between sexes; three versions that allowed only one parameter to vary between sexes; and a common version, which held all three parameters constant between sexes (Ogle 2016;Nelson et al 2018;Jefferson et al 2019). Akaike's information criterion was used to rank the model versions based on fit and to identify the best-fitting version (Akaike 1998;Katsanevakis and Maravelias 2008;Ogle 2016).…”

Section: Methodsmentioning

confidence: 99%

Age, Growth, and Mortality of Atlantic Tripletail in the North‐Central Gulf of Mexico

et al. 2021

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In the southeastern USA and the Gulf of Mexico (GOM), Atlantic Tripletail Lobotes surinamensis are increasingly targeted by recreational anglers, indicating that stock status should be assessed. A critical need for such assessments is age-specific data; however, previous studies have drawn conflicting conclusions regarding the most appropriate structure for aging. Moreover, growth parameters and mortality rates for GOM Atlantic Tripletail are unknown. Therefore, the goals of this study were to ( 1) evaluate sagittal otoliths and first dorsal spines as aging structures; (2) model combined and sex-specific growth; and (3) estimate mortality rates for GOM Atlantic Tripletail. From 2012 to 2019, Atlantic Tripletail (N = 230, including a near-record-size specimen) were collected from the north-central GOM via hook and line and were aged using otoliths and first dorsal spines. Total length ranged from 212 to 940 mm, and age ranged from 0.07 to 5.27 years. Otoliths produced higher percent agreement (95.0%) and lower average percent error (3.0%) between readers compared to spines (82.9% and 6.5%, respectively). The von Bertalanffy growth parameters differed slightly between the otolith-based data (mean asymptotic length [L ∞ ] = 762.42 mm, Brody growth rate coefficient [k] = 0.69 year −1 , and hypothetical age at which length equals zero [t 0 ] = −0.58 year) and spine-based data (L ∞ = 718.83 mm, k = 0.79 year −1 , and t 0 = −0.56 year). For both otolith-and spine-based sex-specific data, the best-fitting version of the von Bertalanffy growth function permitted L ∞ to vary by sex. Chapman-Robson estimates of instantaneous total mortality rate and total annual mortality rate were 1.15 and 68.66%,

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“…After Johanna returned to Finland to become director of the Huso Biological Station on the Baltic Sea, we began a program of student exchange that lasted some 20 years and led to more than a dozen papers on plant-animal interactions authored by students in the program (e.g. Goecker and Kall 2003, Martin et al 2010, Scheinen et al 2011, Nelson et al 2018. In addition, Silvia Ibarra-Obando obtained a Fulbright Fellowship to work in my laboratory and this collaboration later brought me to Baja California, Mexico, where Silvia's home institution Centro de Investigacion Cientifica de Educacion Superior de Ensenada (CICESE) was located, and where I gained an understanding of the eelgrass beds that occurred on the Pacific Coast of Mexico.…”

Section: The Growth Of Seagrass Researchmentioning

confidence: 99%

Seagrass Ecosystems: A career-long quest to understand their inner workings

Heck¹

2019

GCR

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Four decades of research findings on the ecology of seagrasses and their animal and plant associates are described here, along with some of the major changes and advances that have taken place in our understanding of the inner workings of these amazingly productive and diverse ecosystems. Of primary importance are shifts in the recognition of: 1) the importance of the nursery role of seagrasses and how it can be quantified; 2) the importance of direct herbivory in the trophic ecology of seagrass-dominated ecosystems; and 3) the primacy of consumer effects in determining the abundance of algal epiphytes that colonize leaves and other aboveground seagrass tissues. Exciting new areas of investigation include elucidating rhizosphere interactions, including developing a deeper understanding of the importance of nutrient foraging by seagrass roots, and of the microbes in the sediments that fix nitrogen and reduce toxic hydrogen sulfide concentrations. Increased understanding of the roles of genetic diversity and the size and integration of seagrass clones, as well as additional and better evaluations of the relative value of different seagrass meadows as finfish nurseries are also needed. Of great importance for seagrass researchers of the future is spending large amounts of time in the field developing a thorough understanding of the natural history of the many and varied inhabitants of seagrass meadows. The knowledge gained by this investment of time will be essential for the development of meaningful, new hypotheses and the means for testing them.

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Eurasian perch Perca fluviatilis growth and fish community structure, inside and outside a marine‐protected area in the Baltic Sea

Cited by 6 publications

References 60 publications

Age, growth and diet of crevalle jack (Caranx hippos) in the Gulf of Mexico

Age, growth and diet of crevalle jack (Caranx hippos) in the Gulf of Mexico

Age, Growth, and Mortality of Atlantic Tripletail in the North‐Central Gulf of Mexico

Seagrass Ecosystems: A career-long quest to understand their inner workings

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