Effect of starvation on the nutritional condition of early zoea larvae of the red squat lobsterPleuroncodes monodon(Decapoda, Munididae)

Mobilization of energetic reserves during starvation in juveniles of different size of the redclaw crayfishCherax quadricarinatus

“…Lipid levels were affected significantly after starvation near PNR 50 in JIII as well as in J1 g. Anger (2001) stated that the PNR rep resents an irreversible loss of the animal ability to restore lipid re serves depleted during initial starvation. Biochemical results agreed with previous studies which reported significant decrease in lipid levels, mainly in hepatopancreas (Espinoza et al, 2016;Sacristán et al, 2016;Watts et al, 2014;Wu et al, 2017). The histochemical analysis confirmed that R cells of hepatopancreas are responsible for lipid storage whereas the abdominal muscle did not show lipid re serve.…”

“…Aquatic invertebrates frequently suffer periods of starvation due to seasonal variations and heterogeneous spatial distribution of feed (Espinoza, Guzmán, Bascur, & Urzúa, 2016;Gebauer, Paschke, & Anger, 2010). Accordingly, a variety of strategies have been reported such as reduction in metabolic energy expenditure (McCue, 2010), and behavioural changes including a reduction in locomotor activity or changes in feeding patterns (Calvo, Stumpf, Sacristán, & López Greco, 2013;Charron et al, 2015;Sacristán, Nolasco Soria, & Lopez Greco, 2014).…”

“…Accordingly, a variety of strategies have been reported such as reduction in metabolic energy expenditure (McCue, 2010), and behavioural changes including a reduction in locomotor activity or changes in feeding patterns (Calvo, Stumpf, Sacristán, & López Greco, 2013;Charron et al, 2015;Sacristán, Nolasco Soria, & Lopez Greco, 2014). However, when nutritional conditions become favour able, most aquatic species can accumulate energy reserves in special storage organs, so that maintenance, growth and reproduction are ensured during subsequent periods of feed limitation (Castillo Díaz, Tropea, Stumpf, & López Greco, 2016;Espinoza et al, 2016).…”

“…To experimentally quantify the nutritional vulnerability of a given species or developmental stage (Espinoza et al, 2016;Pantaleão et al, 2015;Stumpf, Calvo, Pietrokovsky, & López Greco, 2010), the point of no return (PNR) is estimated. Anger and Dawirs (1981) defined this critical point as the threshold time at which initially starved larvae lose their capability to recover from nutritional stress (even if they are fed ad libitum afterwards).…”

Seasonal changes in the biochemical composition of females and offspring of red squat lobster, Pleuroncodes monodon (Decapoda, Munididae), from the Southeastern Pacific

“…Subsequently, recently hatched larvae would have a greater capacity to sustain themselves during periods of starvation and/or when planktonic food availability is low during winter (Gebauer et al., ; Urzúa & Anger, ). Recent studies have reported that P. monodon larvae hatched from large eggs in winter have greater tolerance to starvation (Espinoza, Guzmán, Bascur, & Urzúa, ). Similar positive relationships between the lipid content of eggs and larval nutritional vulnerability have been described for other crustacean species in temperate regions ( M. brachydactyla : Andrés, Estévez, Simeó, & Rotllant, ; Rotllant et al., ; C. crangon : Urzúa et al., ).…”