Rockfish size and age: The crossroads of spatial protection, central place fisheries and indigenous rights

Frid, Alejandro; McGreer, Madeleine; Haggarty, Dana; Beaumont, Julie; Gregr, Edward J.

doi:10.1016/j.gecco.2016.09.008

Cited by 22 publications

(21 citation statements)

References 29 publications

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“…It is notable that information provided by Indigenous fishers during the study is consistent with the declining body sizes of yelloweye rockfish documented by fishery-independent surveys (Frid et al, 2016;McGreer & Frid, 2017). Overall, this lends credibility to both modern and historical size estimates by participants in this study and beyond.…”

Section: Discussionsupporting

confidence: 73%

“…There is, however, a possibility of depth refuge for the larger size classes of rockfishes, as the only participants who still catch large yelloweye rockfish were three individuals who currently fish substantially deeper (300-500 m) than the typical fishing depth. can contribute to the conservation and restoration of rockfishes (Parker et al, 2000;Yamanaka & Logan, 2010), including yelloweye rockfish (Frid et al, 2016). can contribute to the conservation and restoration of rockfishes (Parker et al, 2000;Yamanaka & Logan, 2010), including yelloweye rockfish (Frid et al, 2016).…”

Section: Ecological Data Sourcesmentioning

confidence: 99%

“…In the three cases that fishers reported weight (kg) rather than length, this was converted to total length (cm) using the regression TL = 40.445weight 0.2913 . The equation was derived from 54 field specimens (a subset of those analysed by Frid et al, 2016) collected at fishing sites described by interview participants. Yelloweye rockfish lengths described by participants during interviews were linked with the spatial locations they mapped.…”

Section: Semi-structured Interviewsmentioning

confidence: 99%

“…These data encompassed2006-2007 and 2013-2016, and the whole study region, including sheltered channels and fjords(Frid et al, 2016). The first consisted of hook-and-line surveys and sampling of landings by Indigenous subsistence fishers carried out by Central Coast First Nations (CCIRA data).…”

mentioning

confidence: 99%

“…In recent decades, however, Indigenous fishers from the Kitasoo/Xai'xais, Heiltsuk, Nuxalk, and Wuikinuxv First Nations of BC's Central Coast have been observing declines of rockfish, which they attribute primarily to overexploitation by commercial and recreational fishers. These First Nations are particularly concerned about yelloweye rockfish (S. ruberrimus), an important cultural and economic resource, and commissioned this study to complement information from ecological surveys (Frid, McGreer, Haggarty, Beaumont, & Gregr, 2016). Their primary interest was in using TEK and LEK to understand change over time in the sizes and abundance of yelloweye rockfish at traditional fishing sites, thereby informing restoration targets.…”

mentioning

confidence: 99%

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Diving back in time: Extending historical baselines for yelloweye rockfish with Indigenous knowledge

Eckert

Ban

Frid

et al. 2017

Aquatic Conservation

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1. Ocean systems, and the culturally and commercially important fishes that inhabit them, face growing threats. Increasingly, unconventional data sources are being used to inform fisheries research and management for data-poor species.2. Listed as a species of special concern in Canada, yelloweye rockfish (Sebastes ruberrimus) are vulnerable to exploitation, and have historical and cultural value to Indigenous people. In this study, Indigenous fishers of British Columbia, Canada, were interviewed and asked about observed changes to the body sizes (length) and abundance of this species over the last~60 years, and the factors driving these changes. Their current and historical estimates of size and abundance were compared with current biological survey data.3. Forty-two semi-directed interviews were carried out and 89% of respondents observed a decrease in yelloweye rockfish body sizes since the 1980s. The median historical (1950s-1980s) length was 84 cm, compared with the median modern (2010-2015) length of 46 cm. All but one respondent reported substantial decrease in yelloweye rockfish abundance since their earliest fishing experiences (1950s to1980s, depending on participant's age), with a third suggesting the change was most evident in the early 2000s, followed by the 1980s (21%) and 1990s (17%).4. Sizes of modern yelloweye rockfish estimated by participants resembled estimates derived from ecological data recorded concurrently at the study region.5. This study illustrates a repeatable method for using traditional and local knowledge to extend baselines for data-poor species, and highlights the value of integrating Indigenous knowledge into fisheries research and management.

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Section: Discussionsupporting

confidence: 73%

Section: Ecological Data Sourcesmentioning

confidence: 99%

Section: Semi-structured Interviewsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Diving back in time: Extending historical baselines for yelloweye rockfish with Indigenous knowledge

Eckert

Ban

Frid

et al. 2017

Aquatic Conservation

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Age-Associated Different Transcriptome Profiling in Zebrafish and Rats: an Insight into the Diversity of Vertebrate Aging

et al. 2022

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Background: Aging and death are inevitable for most species and are of intense interest for human beings. Most mammals, including humans, show obvious aging phenotypes, for example, loss of tissue plasticity and sarcopenia. In this regard, fish provide attractive models because of their unique aging characteristics. First, the lifespan of fish is highly varied and some long-lived fish can live for over 200 years. Second, some fish show anti-aging features and indeterminate growth throughout their life.Because these characteristics are not found in mammalian model organisms, exploring mechanisms of senescence in fish is expected to provide new insights into vertebrate aging. Therefore, we conducted transcriptome analysis for brain, gill, heart, liver and muscle from 2-month-, 7-month-, 16month-and 39-month-old zebrafish. In addition, we downloaded RNA-seq data for sequential agerelated gene expression in brain, heart, liver and muscle of rat (1). These RNA-seq data from two species were compared, and common and species-specific features of senescence were analyzed.Results: Screening of differentially expressed genes (DEGs) in all zebrafish tissues examined revealed up-regulation of circadian genes and down-regulation of hmgb3a. Comparative analysis of DEG profiles associated with aging between zebrafish and rat showed both conserved and clearly different aging phenomena. Furthermore, up-regulation of circadian genes with aging and down-regulation of collagen genes were observed in both species. On the other hand, in zebrafish, up-regulation of autophagy related genes in muscle and atf3 in various tissues suggested fish-specific anti-aging characteristics. Consistent with our knowledge of mammalian aging, a tissue deterioration-related DEG profile was observed in rat. We also detected aging-associated down-regulation of muscle development and ATP metabolism-related genes in zebrafish gill. Correspondingly, hypoxia-related genes were systemically up-regulated in aged zebrafish, suggesting age-related hypoxia as a senescence modulator in fish. Conclusions:Our results indicate both common and different aging profiles between fish and mammals. Gene expression profiles specific to fish will provide new insight for future translational research.

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Evaluating Rockfish Conservation Areas in southern British Columbia, Canada using a Random Forest model of rocky reef habitat

Haggarty

Yamanaka

2018

Estuarine, Coastal and Shelf Science

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Rockfish size and age: The crossroads of spatial protection, central place fisheries and indigenous rights

Cited by 22 publications

References 29 publications

Diving back in time: Extending historical baselines for yelloweye rockfish with Indigenous knowledge

Diving back in time: Extending historical baselines for yelloweye rockfish with Indigenous knowledge

Age-Associated Different Transcriptome Profiling in Zebrafish and Rats: an Insight into the Diversity of Vertebrate Aging

Evaluating Rockfish Conservation Areas in southern British Columbia, Canada using a Random Forest model of rocky reef habitat

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