Interannual fluctuations in recruitment and growth of the sardine, <i>Sardinops melanostictus</i>, in the sea of Japan and adjacent waters

Hiyama, Yoshiaki; Nishida, Hiroshi; Goto, Tanjuro

doi:10.1007/bf02515818

Cited by 30 publications

(54 citation statements)

References 6 publications

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“…Catching large numbers of new recruits may result in a decrease in intraspecific competition, and hence faster growth rates, allowing fish to achieve maturation at younger ages (Watanabe et al, 2000;Watanabe and Yatsu, 2004). This density-dependent growth has been observed in other pelagic fishes such as Japanese sardine (Hiyama et al, 1995;Wada et al, 1995), Japanese Spanish mackerel (Kishida, 1990), and common squid (Kidokoro, 2001).…”

Section: Discussionmentioning

confidence: 84%

Age and growth of chub mackerel (Xcomber japonicus) in the East China and Yellow Seas using sectioned otolith samples

Chen

Feng

2008

J. Ocean Univ. China

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Although chub mackerel (Scomber japonicus) is a primary pelagic fish species, we have only limited knowledge on its key life history processes. The present work studied the age and growth of chub mackerel in the East China and Yellow Seas. Age was determined by interpreting and counting growth rings on the sagitta otoliths of 252 adult fish caught by the Chinese commercial purse seine fleet during the period from November 2006 to January 2007 and 150 juveniles from bottom trawl surveys on the spawning ground in May 2006. The difference between the assumed birth date of 1st April and date of capture was used to adjust the age determined from counting the number of complete translucent rings. The parameters of three commonly used growth models, the von Bertalanffy, Logistic and Gompertz models, were estimated using the maximum likelihood method. Based on the Akaike Information Criterion (AIC), the von Bertalanffy growth model was found to be the most appropriate model. The size-at-age and size-at-maturity values were also found to decrease greatly compared with the results achieved in the 1950s, which was caused by heavy exploitation over the last few decades.

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Section: Discussionmentioning

confidence: 84%

Age and growth of chub mackerel (Xcomber japonicus) in the East China and Yellow Seas using sectioned otolith samples

Chen

Feng

2008

J. Ocean Univ. China

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“…The shift to the anchovy regime (the second replacement) occurred in 1988. Low sardine recruitment was reported between 1988 and 1991 (Hiyama et al 1995;Ohshimo et al 2009;Tanaka et al 2010), whereas anchovy recruitment increased between 1987 and 1990 (Kuroda et al 2011). These opposite trends may have been caused by climate and climaterelated environmental changes (Ohshimo et al 2009;Sakuramoto et al 2010;Yatsu et al 2005).…”

Section: Discussionmentioning

confidence: 92%

The Response of Fish Communities to Climate and Human-Induced Changes Inferred from Fishery Landings in an Enclosed Bay

Chung

Suzaki

Kasai

et al. 2014

Estuaries and Coasts

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Variations in the fish community structure in Omura Bay, an enclosed bay in the East China Sea, were investigated using long-term fishery landing data over the past five decades . We confirmed that the fish community structure in Omura Bay showed three conspicuous regimes during the study period. Anchovies dominated in the pelagic domain with abundant and various demersal fish species in the first phase (1965)(1966)(1967)(1968)(1969)(1970)(1971)(1972)(1973)(1974)(1975)(1976)(1977)(1978). Demersal fish declined remarkably with the dominance of sardines in the pelagic domain during the second phase (1979)(1980)(1981)(1982)(1983)(1984)(1985)(1986)(1987), and the fish community was simplified with the return of anchovies and no recovery of demersal fish in the third phase (1988)(1989)(1990)(1991)(1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006). These changes were significantly related with periodic largescale climate changes and cumulative regional-scale human impacts. The replacement of sardine/anchovy caused by a climate regime shift in the North Pacific contributed to the fish community regime shifts in Omura Bay. Moreover, habitat degradation such as depletion of dissolved oxygen combined with climate-induced changes in food web systems resulted in a rapid reduction in demersal fish. Contraction of the habitat volume due to an increase in oxygen-restricted water simplified the fish community structure and eventually reduced fishery landings in Omura Bay. These findings demonstrate that long-term fish community responses to largescale climate changes and regional-scale human impacts can be observed in a coastal enclosed bay, providing useful information for fisheries management in areas with climate and human-induced changes.

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“…This is also true for sardine and anchovy (Figure a,b), based on the apparent asymptotic patterns in the SSB–R relationships (Figure a), even with stronger environmental effects causing the observed high variability in the SSB–R relationships. Furthermore, density‐dependent effects on growth and maturation were reported for sardine at least (Hiyama et al, ; Kim et al, ; Ohshimo et al, ; Wada & Kashiwai, ).…”

Section: Discussionmentioning

confidence: 99%

“…The maturation rate for 1‐year‐old fish was assumed to be 10% during 1978–1993 (high‐biomass period), 20% during 1994–1997 (medium‐biomass period) and 50% during 1998–2015 (low‐biomass period) for sardine (Yukami et al, ), whereas it was assumed to be constant at 100% for anchovy (Kamimura et al, ). The assumption is not based on observations at a monthly basis but refers to previous observations (Hiyama, Nishida, & Goto, ; Ohshimo, Tanaka, & Hiyama, ; Wada & Kashiwai, ). Although the assumption could be a bias source in SSB and SSA estimates, a sensitivity analysis under different assumptions of maturation rate confirmed that the results of the test of density dependence in egg production were robust in the previous study (Takasuka et al, ).…”

Section: Methodsmentioning

confidence: 99%

Disentangling density‐dependent effects on egg production and survival from egg to recruitment in fish

2019

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Understanding of density‐dependent effects is key to achieving sustainable management of self‐regulating biological resources such as fish stocks. Traditionally, density‐dependent effects on population abundance in fish have been considered to occur from hatching to recruitment, based on the paradigm of proportionality between spawning stock biomass and total egg production. Here, we demonstrate how the existence of intraspecific and interspecific density dependence in egg production changes the current understanding of density‐dependent processes in the life history of fish, by disentangling density‐dependent effects on egg production and survival from egg to recruitment, using sardine (Sardinops melanostictus, Clupeidae) and anchovy (Engraulis japonicus, Engraulidae) as model species. For sardine, strong intraspecific density‐dependent effects occurred in egg production, but no density‐dependent effects occurred or if any they were weak enough to be masked by environmental factors from hatching to recruitment. In contrast, for anchovy, interspecific density‐dependent effects occurred in egg production. In the survival after hatching, anchovy experienced stronger intraspecific density‐dependent effects than currently recognized. This analysis could overturn the current understanding of density‐dependent effects in the life history, highlighting contrasts between the effects on individual quality and population abundance and between the model species. We propose to reconsider the basis of fisheries management and recruitment studies based on the revised understanding of density‐dependent effects in the life history of the respective species.

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Interannual fluctuations in recruitment and growth of the sardine, Sardinops melanostictus, in the sea of Japan and adjacent waters

Cited by 30 publications

References 6 publications

Age and growth of chub mackerel (Xcomber japonicus) in the East China and Yellow Seas using sectioned otolith samples

Age and growth of chub mackerel (Xcomber japonicus) in the East China and Yellow Seas using sectioned otolith samples

The Response of Fish Communities to Climate and Human-Induced Changes Inferred from Fishery Landings in an Enclosed Bay

Disentangling density‐dependent effects on egg production and survival from egg to recruitment in fish

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