2009
DOI: 10.1007/s12562-009-0080-6
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Spatiotemporal variations in nutritional status and feeding habits of immature female bighand thornyhead Sebastolobus macrochir off the Pacific coast of northern Honshu, Japan

Abstract: Nutritional status and feeding habits of immature female bighand thornyhead Sebastolobus macrochir were assessed based on Fulton's condition factor K, hepatosomatic index (HSI), and stomach observations. Fish were obtained from bottom trawl samples taken seasonally during 2006/2007 in the Tohoku area, off the Pacific coast of northern Honshu, Japan. Results of the generalized linear model (GLM) indicated that fish condition deteriorated with depth, and small fish had a lower K, HSI, and percent stomach content… Show more

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Cited by 8 publications
(6 citation statements)
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References 12 publications
(28 reference statements)
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“…The 14 C Bulk value of A. elongatus, the highest among those of other demersal fish, may be explained by its habitat preference for relatively shallow water (Kitagawa, 1990;Fujita et al, 1995) (catch-record depth: 20-269 m; Supplementary Table 1), which is mainly affected by 14 C-enriched DIC from the Tsugaru/Kuroshio Current. By contrast, the 14 C Bulk value of S. macrochir (-18.1 , n = 1), the lowest among those of other demersal fish, may reflect its feeding preference for benthic animals (Hattori et al, 2009b), which originate in 14 C-depleted DIC in deep waters.…”
Section: Other Demersal Fishmentioning
confidence: 80%
“…The 14 C Bulk value of A. elongatus, the highest among those of other demersal fish, may be explained by its habitat preference for relatively shallow water (Kitagawa, 1990;Fujita et al, 1995) (catch-record depth: 20-269 m; Supplementary Table 1), which is mainly affected by 14 C-enriched DIC from the Tsugaru/Kuroshio Current. By contrast, the 14 C Bulk value of S. macrochir (-18.1 , n = 1), the lowest among those of other demersal fish, may reflect its feeding preference for benthic animals (Hattori et al, 2009b), which originate in 14 C-depleted DIC in deep waters.…”
Section: Other Demersal Fishmentioning
confidence: 80%
“…7) might also reflect the difference in prey availability, although no evidence for this was observed; SCI during this period was lower in the northern area. The importance of prey utilization for the condition of predatory fishes has also been suggested for other demersal fishes such as Greenland halibut Reinhardtius hippoglossoides (Román et al 2007), Atlantic cod Gadus morhua (Pardoe et al 2008), bighand thornyhead Sebastolobus macrochir (Hattori et al 2009), and grey gurnard Eutrigla gurnardus (Weinert et al 2010).…”
Section: Discussionmentioning
confidence: 93%
“…The stomach content weight index (SCI) was used to standardize the stomach contents data: SCI = SCW × BW −1 × 100. To analyze variation in the SCI, we constructed a GLMM with Gaussian family and log‐link function, following Hattori, Okuda, Narimatsu, Ueda, and Ito () with some modifications: the response variable was [SCW + 0.00001], initial explanatory variables and random variable were same as those in the GLMM for empty stomach rates, and log (BW) was used as an offset term. Because the SCW involves zero data, we added a negligible value of 0.00001 to the SCW to allow logarithm transformation.…”
Section: Methodsmentioning
confidence: 99%
“…Gaussian family and log-link function, followingHattori, Okuda, Narimatsu, Ueda, and Ito (2009) with some modifications: the response variable was [SCW + 0.00001], initial explanatory variables and random variable were same as those in the GLMM for empty stomach rates, and log (BW) was used as an offset term.Because the SCW involves zero data, we added a negligible value of 0.00001 to the SCW to allow logarithm transformation. Thefinal model was selected based on the Akaike information criterion (AIC).…”
mentioning
confidence: 99%