Comparative energy allocation in two sympatric, closely related gobies: the black goby <i>Gobius niger</i> and the grass goby <i>Zosterisessor ophiocephalus</i>

Fiorin, Riccardo; Malavasi, Stefano; Franco, Anita; Franzoi, Piero

doi:10.1111/j.1095-8649.2007.01319.x

Cited by 17 publications

(9 citation statements)

References 37 publications

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“…Many species utilize the liver as their primary lipid reserve (Shulman & Love, 1999), e.g. the gobies Gobius niger L. 1758 and Zosterisessor ophiocephalus (Pallas 1814) (Fiorin et al , 2007). Similar to many salmonids (Jobling et al , 1998; Morgan et al , 2002), however, analysis of probable depots of TAG revealed the vast majority ( c. 95%) was stored in the carcass, indicating that YOY C. regalis liver and viscera play a minor role in long‐term storage of lipid reserves.…”

Section: Discussionmentioning

confidence: 99%

Lipid class dynamics and storage depots in juvenile weakfish Cynoscion regalis and their application to condition assessment

Litvin

Guida

Weinstein

2011

Journal of Fish Biology

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Lipid class dynamics, the pattern of change in the primary form and location of lipid stores and their relationship with standard length (L S ), were investigated in collections of young-of-the-year weakfish Cynoscion regalis for the purpose of determining the utility of this analysis as an indication of condition. The separation of total lipids into individual classes and the analysis of potential storage depots revealed the general patterns of lipid class dynamics and energy storage in C. regalis during their period of juvenile estuarine residency. Phospholipid and cholesterol exhibited moderate but variable (8·1-40·0 and 1·3-21·5 mg g −1 , respectively) concentrations across the entire juvenile period and were the predominant lipid classes in juveniles <100 mm L S , while wax ester concentrations were low (c. 1 mg g −1 ) and exhibited the least amount of variability among lipid classes. Triacylglycerols (TAG) and free fatty acids (FFA) exhibited similar dynamics, with relatively low concentrations (<15 mg g −1 ) in individuals ≤100 mm L S . In larger juveniles both TAG and FFA concentrations generally increased rapidly, though there was considerable variability in both measures (0·0-199·7 and 0·0-49·7 mg g −1 , respectively). Increasing levels of lipids, primarily in the form of TAG, with size indicated an accumulation of energy reserves with growth, thus providing an indication of individual condition for larger juveniles. Separate analysis of liver, viscera and the remaining carcass indicated that liver and viscera did not represent a significant depot of TAG reserves. Analysis of samples derived from whole juvenile C. regalis thus provided an accurate estimate of energy reserves.

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Section: Discussionmentioning

confidence: 99%

Lipid class dynamics and storage depots in juvenile weakfish Cynoscion regalis and their application to condition assessment

Litvin

Guida

Weinstein

2011

Journal of Fish Biology

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“…Amongst fish species, there are differences in the acquisition, accumulation and allocation of energy reserves, given variations in habitat, trophic category, nature and origin of food, as well as the reproductive strategy used by the species in question (Bennemann et al, 1996;Huntingford et al, 2001;Fiorin et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Patterns of energy allocation to reproduction in three Amazonian fish species

Santos

Amadio²,

Ferreira³

2010

Neotrop. ichthyol.

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The study considered the influence of the hydrological cycle and gonadal development on the accumulation and use of energy in three fish species from an Amazonian flooded area. Fishes were sampled over a 24 hour period at monthly intervals between July 2004 and June 2005 using gillnets of different mesh sizes. Body cavity fat and gonadosomatic indices were determined, as well as energy content of gonads and muscles. Amongst the studied species, different means of energy allocation for reproduction were found: Acestrorhynchus falcirostris allocate energy from body cavity fat to its gonads; Pygocentrus nattereri uses mainly energy accumulated in the muscles for the process of gonadal maturation; and Hoplosternum littorale uses energy accumulated in their muscles and body cavity fat for reproductive processes. It is quite clear that the flood pulse regulates the gain and use of the energy reserves in fishes from the Amazonian floodplain.O presente estudo considerou a influência do ciclo hidrológico e maturação gonadal no acúmulo e utilização da energia em três espécies de peixes, numa área de planície de inundação amazônica. As amostras foram obtidas mensalmente durante o período de julho de 2004 a junho de 2005, utilizando redes de emalhar com vários tamanhos de malhas, durante 24 horas. O índice de gordura cavitária, índice gonadossomático, e teor energético dos músculos e gônadas foram analisados. Dentre as espécies analisadas, foram detectados diferentes padrões de alocação de energia: Acestrorhynchus falcirostris aloca energia das reservas de gordura cavitária para as gônadas; Pygocentrus nattereri utiliza energia dos músculos para este fim e Hoplosternum littorale, além da gordura cavitária, utiliza também energia acumulada nos músculos para realização dos processos reprodutivos. Ficou evidente que o pulso de inundação exerce forte influência no acúmulo e utilização das reservas energéticas dos peixes da planície de inundação amazônica.

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“…1b). This kind of energy transference from muscle and liver to the gonads has previously been reported for other species of notothenioids (Kamler 2001;Vanella et al 2005) and non-notothenioids (Fiorin et al 2007;Zaboukas et al 2006). Analysis of the ED G in P. tessellata separated by the sex of the individuals showed a clear influence of a well known physiological mechanism (Fig.…”

Section: Resultsmentioning

confidence: 72%

Energy density of sub-Antarctic fishes from the Beagle Channel

Fernández

Lattuca

Boy

et al. 2008

Fish Physiol Biochem

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The energy density (ED) of nine species of sub-Antarctic fishes was estimated by calorimetry. The fish, seven notothenioids, one atherinopsid and one galaxiid, represents some of the more abundant species in the ichthyofauna of the Beagle Channel. Principal-components analysis (PCA) of the ED of the different organs/tissues indicated that PC(1) and PC(2) accounted for 87% of the variability. Separation along PC(1) corresponded to differences in muscle and liver energy densities whereas separation along PC(2) corresponded to differences in the ED of the gonads. Differences between species were significant except for P. sima. Inclusion of the gonadosomatic index (GSI) as an explanatory variable enabled us to establish the existence of energy transfer from muscle and liver to the gonads in ripe P. tessellata females. Total ED values varied between 4.21 and 6.26 kJ g(-1), the pelagic Odontesthes sp. being the species with the highest ED. A significant relationship between ED and muscle dry weight (DW(M)) was found for all the species except P. tessellata. These data are the first direct estimates of ED of fishes from the Beagle Channel.

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Comparative energy allocation in two sympatric, closely related gobies: the black goby Gobius niger and the grass goby Zosterisessor ophiocephalus

Cited by 17 publications

References 37 publications

Lipid class dynamics and storage depots in juvenile weakfish Cynoscion regalis and their application to condition assessment

Lipid class dynamics and storage depots in juvenile weakfish Cynoscion regalis and their application to condition assessment

Patterns of energy allocation to reproduction in three Amazonian fish species

Energy density of sub-Antarctic fishes from the Beagle Channel

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