Centrarchid Energetics

Bevelhimer, Mark S.; Breck, James E.

doi:10.1002/9781444316032.ch7

Cited by 13 publications

(16 citation statements)

References 178 publications

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“…Centrarchid feed consumption is known to increase with temperature within species’ tolerance ranges (Bevelhimer and Breck ), and this was observed with the GB in the present study. Transition through early life stages, being defined by fin development (Snyder ), progressed faster at higher temperatures.…”

Section: Discussionsupporting

confidence: 80%

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The Early Life History of the Guadalupe Bass: Lessons for Culturing a Threatened Species

Prangnell

Matthews

2018

N American J Aquac

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Guadalupe Bass Micropterus treculii fingerlings are produced at the A. E. Wood State Fish Hatchery in San Marcos, Texas, and stocked into streams draining the Edwards Plateau in central Texas as part of a conservation program to restore threatened populations and combat hybridization with Smallmouth Bass M. dolomieu. Despite an intensive conservation effort, much of the early life history (including morphological development and first feeding characteristics) required for the intensive production of Guadalupe Bass is unreported in the mainstream literature. A better understanding of this critical period may improve culture practices, fingerling production, and management efforts. We documented spawning and early developmental characteristics and milestones over a temperature range of 20–24°C and the prey composition of Guadalupe Bass in a hatchery setting. Eggs and fry were photographed under a microscope and observed in culture tanks and ponds from initial stocking to fingerling harvest. A dominant‐male, polygynous spawning structure was confirmed. Egg incubation (28–29 growing degree‐days), larval development, yolk depletion, swim‐up, and life stage transition proceeded faster at higher temperature. Eggs (mean diameter, 2.1 mm), fry (mean hatchling TL, 4.7 mm), and yolk reserves (mean hatchling yolk volume, 2.02 μL) were larger than reported for Largemouth Bass M. salmoides. Normally developed fry commenced exogenous feeding on a variety of zooplankton soon after swim‐up (120–144 h posthatch and 6.95–8.05 mm TL at 23.4°C), while yolk was still present, and consumed progressively larger aquatic invertebrates over time. Swim‐up fry with a range in gape width of 0.75–0.89 mm readily consumed brine shrimp Artemia spp. nauplii as first feed. Guadalupe Bass appear to be a relatively pliable species, and current culture practices are generally sound. The observations presented can be used to refine culture and management practices.

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Section: Discussionsupporting

confidence: 80%

“…; Brewer and Orth ). Independently of prey energy density and catchability, selecting larger prey can provide more nutritional benefit for the amount of energy invested (Edwards ; Bevelhimer and Breck ).…”

Section: Discussionmentioning

confidence: 99%

The Early Life History of the Guadalupe Bass: Lessons for Culturing a Threatened Species

Prangnell

Matthews

2018

N American J Aquac

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“…Further, the low correlation found between energy density and fish length or weight may have been a reflection of the small size range of individuals. Smaller fish have a lower energy density compared to older and larger fish (Bevelhimer & Breck, 2009).…”

Section: Discussionmentioning

confidence: 99%

“…For the same level of consumption, fish in good condition had a greater rate of growth in length than fish in poor condition (Bevelhimer & Breck, 2009). Fish in poor condition allocate more of their new tissue to improving conditions and consequently grow less in length than fish in good condition (Bajer & Hayward, 2006).…”

Section: Discussionmentioning

confidence: 99%

“…According to Bevelhimer & Breck (2009), fish energy content depends on the energy values of the component tissues, and fish in better condition generally have higher lipid levels, which translates into higher energy density. An improvement in the energetic condition of the food availability may have allowed more energy to be released and directed towards metabolism and growth, resulting in an increase in muscle-energy density.…”

Section: Discussionmentioning

confidence: 99%

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Body condition and energy density of juvenile streaked prochilod Prochilodus lineatus (Valenciennes, 1837) in a Neotropical floodplain

2016

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Variations in energetic density (E D ) and the relative condition factor (K n ) of juveniles of Prochilodus lineatus were investigated to identify whether these two variables respond similarly to environmental factors. We hypothesized that fluviometric levels in different sub-basins of the Upper Paraná River floodplain positively influence the E D and K n of juvenile fish. Temporally, the values of E D and K n were linked more directly to the dynamics of the flood pulses on the plain. Spatially, the lowest values of E D and K n were observed in the environment that was directly affected by the operation of dams, the sub-basin Paraná. Although the energy density and condition factor did not show similar results for juveniles in some of the analyses, the evaluation of both parameters provided a complementary tool and additional information that enabled a more accurate investigation of the temporal and spatial dynamic processes in this Neotropical floodplain. We conclude that water level variations in different sub-basins of the Upper Paraná River floodplain considerably affect the relative condition factor and energy status of P. lineatus. We suggest that the impacts of this modification should be mitigated or avoided in order to maintain fish stocks and promote ecosystem integrity.Variações na densidade energética (E D ) e no fator de condição relativo (K n ) de juvenis de Prochilodus lineatus foram investigadas buscando identificar se estas duas variáveis respondem de forma semelhante aos fatores ambientais. Nossa hipótese é que o nível fluviométrico, em diferentes subsistemas da planície de inundação do alto rio Paraná, influencia positivamente o E D e K n de juvenis da espécie. Temporalmente, os valores de E D e K n estiveram relacionados mais diretamente a dinâmica de pulsos de inundação presente na planície. Espacialmente, os menores valores de E D e K n foram verificados no ambiente mais diretamente afetado pela operação das barragens, o subsistema Paraná. Apesar da densidade de energia e do fator de condição não demonstrarem resultados semelhantes para juvenis em algumas das análises, a avaliação de ambos os parâmetros forneceu uma ferramenta complementar e informações adicionais, que permitiu uma investigação mais detalhada dos processos dinâmicos temporais e espaciais nesta várzea neotropical. Conclui-se que a variação do nível de água, em diferentes subsistemas da planície de inundação do alto rio Paraná, afeta consideravelmente a condição corpórea e energética de P. lineatus. Nós sugerimos que impactos que modifiquem este efeito devem ser mitigados ou evitados para manter o estoque de peixes e promover a integridade do ecossistema.

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Hybridization and its Application in Centrarchids

Shen

Wang

2018

Sex Control in Aquaculture

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Centrarchid Energetics

Cited by 13 publications

References 178 publications

The Early Life History of the Guadalupe Bass: Lessons for Culturing a Threatened Species

The Early Life History of the Guadalupe Bass: Lessons for Culturing a Threatened Species

Body condition and energy density of juvenile streaked prochilod Prochilodus lineatus (Valenciennes, 1837) in a Neotropical floodplain

Hybridization and its Application in Centrarchids

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