Interannual variations of the occurrence of epipelagic fish in the diets of the seabirds breeding on Teuri Island, northern Hokkaido, Japan

Deguchi, Tomohiro; Watanuki, Yutaka; Niizuma, Yasuaki; Nakata, Akifumi

doi:10.1016/j.pocean.2004.06.010

Cited by 36 publications

(31 citation statements)

References 19 publications

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“…We expected a positive relationship between anchovy in the diet and SST, because the mechanism (advection of fish with intensification of the warm Tsushima Current) has been well described previously (Deguchi et al 2004). Moreover, Deguchi et al (2004) observed a correlation between June SST and anchovy in seabird diet between 1992 and 2001. Differences in the SST measurements used for analyses may explain this discrepancy.…”

Section: Pan-pacific Comparisonsmentioning

confidence: 55%

“…The most striking change in community composition occurred in the northern Sea of Japan (see also Deguchi et al 2004). In 1984, 1985, and 1987, and saury each comprised up to 15%-25% of birds' diet.…”

Section: Low-frequency Variabilitymentioning

confidence: 99%

“…Auklet take of juvenile rockfish in the California Current has been correlated with midwater trawl surveys for juvenile rockfish over many years (Thayer and Sydeman 2007); auklets in this region preferentially prey on rockfish when they are abundant in the ecosystem. In the Sea of Japan, auklet harvest of anchovy has been linked to annual stock size estimates Deguchi et al 2004). In both situations, the take of preferred prey was correlated with increased bird productivity (Takahashi et al 2001;Thayer and Sydeman 2007).…”

Section: Seabirds As Indicators Of Forage Fishmentioning

confidence: 99%

“…Differences in the SST measurements used for analyses may explain this discrepancy. We used a 50 km radius around TEI based on AVHRR-derived SST, while Deguchi et al (2004) used shipboard conductivitytemperature-depth (CTD) measurements covering a much larger area. Insolation can cause variation between ocean surface and subsurface temperature measurements (see Appendix A), increasing disparity between satellite and shipboard data.…”

Section: Pan-pacific Comparisonsmentioning

confidence: 99%

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Forage fish of the Pacific Rim as revealed by diet of a piscivorous seabird: synchrony and relationships with sea surface temperature

Thayer

Bertram

Hatch

et al. 2008

Can. J. Fish. Aquat. Sci.

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Abstract:We tested the hypothesis of synchronous interannual changes in forage fish dynamics around the North Pacific Rim. To do this, we sampled forage fish communities using a seabird predator, the rhinoceros auklet (Cerorhinca monocerata), at six coastal study sites from Japan to California. We investigated whether take of forage fishes was related to local marine conditions as indexed by sea surface temperature (SST). SST was concordant across sites in the eastern Pacific, but inversely correlated between east and west. Forage fish communities consisted of anchovy (Engraulis spp.), sandlance (Ammodytes spp.), capelin (Mallotus spp.), and juvenile rockfish (Sebastes spp.), among others, and take of forage fish varied in response to interannual and possibly lower-frequency oceanographic variability. Take of primary forage species were significantly related to changes in SST only at the eastern sites. We found synchrony in interannual variation of primary forage fishes across several regions in the eastern Pacific, but no significant east-west correlations. Specifically in the Japan Sea, factors other than local SST or interannual variability may more strongly influence forage fishes. Predator diet sampling offers a fishery-independent, large-scale perspective on forage fish dynamics that may be difficult to obtain using conventional means of study. Résumé :Nous testons l'hypothèse qui veut qu'il y ait des changements interannuels synchrones dans les dynamiques des poissons fourrage autour de la bordure du Pacifique Nord. C'est pourquoi nous avons échantillonné les peuplements de poissons fourrage à l'aide d'un oiseau marin prédateur, le macareux rhinocéros (Cerorhinca monocerata), à six sites d'étude côtiers du Japon à la Californie. Nous avons vérifié si les captures de poissons fourrage sont reliées aux conditions marines locales, telles que représentées par la température de surface de la mer (SST). Les SST s'accordent d'un site à l'autre dans l'est du Pacifique, mais il y a une corrélation inverse entre l'est et l'ouest. Les peuplements de poissons fourrage consistent, entre autres, d'anchois (Engraulis spp.), de lançons (Ammodytes spp.), de capelans (Mallotus spp.) et de jeunes sébastes (Sebastes spp.) et la capture de poissons fourrage varie en réaction à la variabilité océanographique interannuelle ou aussi peut-être de fréquence moins élevée. La capture de poissons fourrage principaux est en corrélation significative avec SST seulement dans les sites de l'est. Nous observons un synchronisme dans la variation interannuelle des poissons fourrage principaux entre plusieurs régions de l'est du Pacifique, mais aucune corrélation significative entre l'est et l'ouest. Tout particulièrement dans la mer du Japon, des facteurs autres que la SST locale et la variabilité interannuelle peuvent influencer plus fortement les poissons fourrage. L'échantillonnage du régime alimentaire des prédateurs permet d'obtenir, indépendamment de la pêche commerciale, une perspective à grande échelle de la dynamique des poissons f...

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Section: Pan-pacific Comparisonsmentioning

confidence: 55%

Section: Low-frequency Variabilitymentioning

confidence: 99%

Section: Seabirds As Indicators Of Forage Fishmentioning

confidence: 99%

Section: Pan-pacific Comparisonsmentioning

confidence: 99%

See 2 more Smart Citations

Forage fish of the Pacific Rim as revealed by diet of a piscivorous seabird: synchrony and relationships with sea surface temperature

Thayer

Bertram

Hatch

et al. 2008

Can. J. Fish. Aquat. Sci.

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“…Gaston & Jones 1998 Takahashi et al 2001;Deguchi et al 2004;Thayer & Sydeman 2007;Ito et al 2009Fisher et al 1955a, b Blount et al 2002Sorensen et al 2009Ito et al 2009Hipfner et al 20132014Takahashi et al 2001Ito et al 2009Ito et al 2009 Batchelor & Ross 1984;Takahashi et al 2001;Litzow et al 2002;Wanless et al 2005;Muller et al 2009 R …”

Section: ; Niizuma and Yamamura 2004mentioning

confidence: 99%

Assimilation efficiency and growth of Rhinoceros Auklet chicks fed with Japanese Sand Lance and krill

et al. 2015

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Abstract. The assimilation efficiency and growth of Rhinoceros AukletThe assimilation efficiency (corrected with nitrogen retention) of the sand lance-fed chicks (82.8 0.5 ) was significantly higher than the krill-fed chicks (76.6 0.6 ). During the experiment, daily mass increments of the sand lance-fed chicks were 11.0 4.7 (g/d, n 12) and of the krill-fed chicks 9.7 2.7 (g/d, n 14). Sand lance-fed chicks gained body mass significantly faster than did krill-fed chicks after controlling for the significant age effect. Krill may be inadequate for chick growth of the auklets due to the poorer lipid content, compared with sand lance.

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Small interannual variability in the body mass of a seabird with high flight costs

Okado,

Watanuki

2023

Mar Biol

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Interannual variations of the occurrence of epipelagic fish in the diets of the seabirds breeding on Teuri Island, northern Hokkaido, Japan

Cited by 36 publications

References 19 publications

Forage fish of the Pacific Rim as revealed by diet of a piscivorous seabird: synchrony and relationships with sea surface temperature

Forage fish of the Pacific Rim as revealed by diet of a piscivorous seabird: synchrony and relationships with sea surface temperature

Assimilation efficiency and growth of Rhinoceros Auklet chicks fed with Japanese Sand Lance and krill

Small interannual variability in the body mass of a seabird with high flight costs

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