The ecophysiology of Sprattus sprattus in the Baltic and North Seas

Peck, Myron A.; Baumann, Hannes; Bernreuther, Matthias; Clemmesen, Catriona; Herrmann, Jens-Peter; Haslob, Holger; Huwer, Bastian; Kanstinger, Philipp; Köster, Fritz; Petereit, Christoph; Temming, Axel; Voss, R.

doi:10.1016/j.pocean.2012.04.013

Cited by 33 publications

(23 citation statements)

References 83 publications

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“…As a corollary, calculating selection-indices for predators do not necessarily reflect active behaviour but spatial heterogeneity of prey distribution in relation to the preferred depth of a predator. Field data obtained during GLOBEC-Germany on clupeids and scyphomedusae such as the vertical habitat utilisation and zooplankton diets (Barz and Hirche, 2005;Bernreuther, 2007;Peck et al, this volume), confirm the conceptual modes of zooplankton habitat utilisation developed in the present study. In the following, we briefly discuss the potential roles of gelatinious (syphomedusae) and fish (clupeid) as potential competitors/predators with/ on zooplankton with respect to depth specific habitat utilisation and abundance of zooplankton.…”

Section: Ecological Consequences Of Zooplankton Vertical Habitat Partsupporting

confidence: 83%

Spatial and temporal habitat partitioning by zooplankton in the Bornholm Basin (central Baltic Sea)

Schulz

Peck²,

Barz

et al. 2012

Progress in Oceanography

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Section: Ecological Consequences Of Zooplankton Vertical Habitat Partsupporting

confidence: 83%

Spatial and temporal habitat partitioning by zooplankton in the Bornholm Basin (central Baltic Sea)

Schulz

Peck²,

Barz

et al. 2012

Progress in Oceanography

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“…7). At the same (summer) water temperatures, field and modeled estimates of C MAX by sprat larvae are also between 40 and 50 % M D d −1 but mass-specific growth rates of larvae are higher (Peck et al 2012). The gross growth efficiency (K 1 ) of 35 mm L S post larval sprat in this study (~26.9 % based upon energy contents) was well within the range of values reported for larvae of other teleosts (Houde and Zastrow 1993).…”

Section: Discussionmentioning

confidence: 95%

“…Line-filled symbols are groups of fish fed at less than maintenance (0 growth) levels and were not used in the linear regression (filled points only) but were included in the non-linear regression. The bottom panel displays growth gross efficiency (%) for all groups fed above maintenance levels (post-larval) sprat have comparable rates of feeding while the latter displays a lower growth rate (Peck et al 2012).…”

Section: Discussionmentioning

confidence: 99%

“…Sprat is zooplanktivorous with the maximum size of prey items increasing throughout the early larval period until a body size of~25 mm standard length (L S ) is reached (Peck et al 2012). Post-larvae (~25 to 45 mm L S , Peck et al 2005), juveniles, and adults utilize the same prey types and sizes (e.g., De Silva 1973;Arrhenius and Hansson 1993;Voss et al 2003;Dickmann et al 2007).…”

Section: Introductionmentioning

confidence: 99%

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Relationships between feeding, growth and swimming activity of European sprat (Sprattus sprattus L.) post-larvae in the laboratory

Peck¹,

Ewest²,

Herrmann³

et al. 2014

Environ Biol Fish

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Despite their trophodynamic importance in many aquatic ecosystems, few studies have quantified the feeding-growth relationship of clupeid fishes. In laboratory trials, we quantified the relationship between rates of food consumption (C, % fish energy content (Joules d −1 )), somatic growth rate (G, % Joules d −1 ), and swimming speed (S S, body lengths (bl) s −1 ) for postlarval (30-to 50-mm standard length) European sprat (Sprattus sprattus L.) collected from the southwestern Baltic Sea. Measurements of G and S S were also made on groups before and after an abrupt shift in prey availability. Maintenance (0-growth) and maximum food consumption rates were 5.5 and 42 % somatic energy content d −1 , respectively. Mean±SE gross growth efficiency (K 1 =100 G C −1 ) was 26.9±3.0 %. Unfed postlarvae had markedly lower S S compared to continuously-fed fish (0.1 versus 0.5 to 0.7 bl s −1 ). After 10 days of re-feeding, one group of previously unfed fish was hyperactive (mean S S of 1.2 bl s −1 ) but no re-fed groups exhibited hyperphagia (based upon prey numbers), increased K 1 , or compensatory growth.Increased competition (relatively high S S ) was evident during feeding in fish maintained at low to moderate but not at ad libitum prey levels. Our findings provide estimates of prey resources required to fuel in situ growth and help characterize metabolic strategies of European sprat within variable feeding environments.

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“…At the boundary of its physiological performance curve an adult fish is thus forced to budget between survival and reproductive capacity [23]. Therefore, in a heterogeneous environment a species' reproductive potential may exhibit strong variations spatially as well as temporally [19,24].…”

Section: Introductionmentioning

confidence: 99%

Ethmalosa fimbriata (Bowdich 1825), a Clupeid Fish That Exhibits Elevated Batch Fecundity in Hypersaline Waters

Döring

Tiedemann

Stäbler

et al. 2017

Fishes

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Abstract:Little is known about the concerted influence of temperature and salinity on the fecundity of clupeid fishes. Due to a globally changing climate, both physical parameters might act as stressors, severely affecting the reproductive potential of clupeid fish populations inhabiting tropical estuaries. Differences in relative batch fecundities, the gonado-somatic index, and the condition index of bonga shad (Ethmalosa fimbriata) were analysed in individual females sampled at the Senegalese coast and inside the inverse Sine Saloum estuary, where salinity increases upstream in all seasons. Multiple linear regression models on fecundity and gonadal energy storage show that clupeids can adapt towards increasing their reproductive investment at temperatures (26-30 • C) and salinities (42-51), which by far exceed marine conditions, in an effort to maximize recruitment success. This reproductive strategy, however, is accompanied by a trade-off between reproductive effort and somatic growth, which ultimately limits the species' reproductive potential inside the estuary. The observed high variability in batch fecundities might be a viable mechanism to adjust to fluctuating and rather extreme environmental conditions. Understanding the spawning biology of exploited clupeid fishes in drastically changing environments is crucial for evaluating the reproductive potential of stocks at the outer reach of their physiological performance curve.

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The ecophysiology of Sprattus sprattus in the Baltic and North Seas

Cited by 33 publications

References 83 publications

Spatial and temporal habitat partitioning by zooplankton in the Bornholm Basin (central Baltic Sea)

Spatial and temporal habitat partitioning by zooplankton in the Bornholm Basin (central Baltic Sea)

Relationships between feeding, growth and swimming activity of European sprat (Sprattus sprattus L.) post-larvae in the laboratory

Ethmalosa fimbriata (Bowdich 1825), a Clupeid Fish That Exhibits Elevated Batch Fecundity in Hypersaline Waters

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