Effect of attractant stimuli, starvation period and food availability on digestive enzymes in the redclaw crayfish Cherax quadricarinatus (Parastacidae)

Sacristán, Hernán Javier; Nolasco-Soria, Héctor; Greco, Laura S. López

doi:10.3354/ab00611

Cited by 14 publications

(21 citation statements)

References 61 publications

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“…In the current study, the protease activities were higher than those of amylase and lipase activities. On the contrast, some researchers determined lipase as highest activity in C. quadricarinatus fed commercial feeds (Calvo et al, 2013;Figueiredo et al, 2001;Pavasovic et al 2006;Sacrist an et al, 2014Sacrist an et al, , 2016. In the study, the protease and amylase activities were higher in V. and VI.…”

Section: Discussionmentioning

confidence: 61%

“…() and Sacristán et al. () reported that starvation had no significant effect on the protease activities in C. quadricarinatus . In the current study, the highest and lowest protease activities were determined in gastric and intestine respectively.…”

Section: Discussionmentioning

confidence: 96%

“…Also, Sacristán et al. (, indicated that the lipase activity in the midgut gland of C. quadricarinatus tended to decrease with increasing starvation time. Figueiredo and Anderson () reported that lipase is not synthesized when food is not available.…”

Section: Discussionmentioning

confidence: 97%

“…Sacristán et al. () demonstrated that the enzymatic profiles in midgut gland of C. quadricarinatus decreased after starvation of 16 days. Similarly, in the present study, amylase activities in midgut gland of female in autumn were determined by lower when feeding was little period.…”

Section: Discussionmentioning

confidence: 99%

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The effects of seasonal, sex and size on the digestive enzyme activities in freshwater crayfish (Astacus leptodactylus Eschscholtz, 1823)

2018

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The effects of seasonal, sex and size on digestive enzyme activities of Astacus leptodactylus in natural habitat were investigated in the present study. The freshwater crayfish were sampled 584 individual as seasonally from Egirdir Lake. Ten male and 10 female individuals were sampled randomly from caught crayfish in each two different size ranges (4.5–7.0, 7.1–9.9 cm) and each season. The gastrointestinal tract, gastric, intestine and midgut gland were individually dissected on ice for enzyme analysis and stomach contents. At the end of the study, amylase activities were affected by interaction of season × sex × size in intestinal, season × sex in midgut gland. However, any interaction was not determined in amylase activities of the gastric. Lipase activities were affected by interaction of season × sex × size in intestinal and gastric, season × sex in midgut gland. The protease activities in each organ were affected by interaction of season, sex and size (p ˂ .05). In all organs, amylase and lipase activities were similar. However, the highest protease activity was in stomach while the lowest protease activity was the intestine. The protease activities were higher than amylase and lipase activities. There is a positive correlation between protease enzyme activities in gastric with gonad maturation and active feeding period. It can be said based on data of digestive system and high protease activity that A. leptodactylus is an omnivore species in need high protein. In addition, the reason for the low levels of lipase activity may be A. leptodactylus not prefer high fat foods or not fed high fat foods.

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Section: Discussionmentioning

confidence: 61%

Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

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The effects of seasonal, sex and size on the digestive enzyme activities in freshwater crayfish (Astacus leptodactylus Eschscholtz, 1823)

2018

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“…However, taking into account that activity of this set of enzymes has been detected and characterised in other decapod crustaceans, such as C. quadricarinatus (Xue et al, 1999), it is possible that A. uruguayana presents these enzymes but maybe, because of the technique used, particularly the insolubility of the substrate (microcrystalline cellulose), it has not been possible to detect it. In the aforementioned Australian lobster, cellulase activity was evaluated according to different substrates, diets and metabolic states (Figueiredo, Kricker, & Anderson, 2001;Sacristán, Nolasco-Soria, & López Greco, 2014). The hypothesis of the presence of this enzyme in anomurans decapods is based on the high intake that these organisms make of plant matter and could be given as it happens in other decapods (Byrne, Lehnert, Johnson, & Moore, 1999).…”

Section: Discussionmentioning

confidence: 99%

Development of enzymes during ontogeny of two freshwater Decapoda:Aegla uruguayana(Aeglidae) andMacrobrachium borellii(Palaemonidae)

et al. 2018

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The similarities or differences among species of the same family or among different families suggest a relationship with their feeding habits or a preference for the various types of food. The aim of this study was to identify the presence of digestive enzymes lipases, total protease, amylases and cellulose, and the effects of sex and size in these activities in two decapod freshwater crustaceans. Specimens of different sizes and sexes of Aegla uruguayana and Macrobrachium borellii were collected in the natural environment. In laboratory, enzymatic preparation consisted in homogenising the digestive gland in a buffer Tris‐HCl. The homogenates were centrifuged and the lipid layer was removed. Enzyme activities were determined using standard protocols. There were no statistically significant differences between sexes in any of the species under study. However, there were changes in the activity of amylases during the ontogeny of A. uruguayana, indicating that in juveniles the values of said activity are significantly higher than in the rest of the groups. M. borellii showed ontogenetic differences in total proteinase activity: organisms of range 2 (intermediate sizes) presented enzymatic activities much smaller than organisms of range 4 (larger sizes). The comparisons of enzymatic activities between both species yielded significant differences, being higher the values in the species A. uruguayana with respect to M. borellii. The results obtained in this work indicate that although both species are omnivorous and consume similar items, the activity of these digestive enzymes could be an evidence of different strategies of utilisation of the resource.

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Postembryonic development and differentiation of the midgut in the freshwater shrimp Neocaridina davidi (Crustacea, Malacostraca, Decapoda) larvae

Sonakowska‐Czajka

Śróbka

Ostróżka

et al. 2020

Journal of Morphology

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Neocaridina davidi is a freshwater shrimp that originates from Taiwan and is commonly bred all over the word. Like all decapods, which develop indirectly, this species has pelagic larvae that may differ entirely in their morphology and habits from adult specimens. To fill a gap of knowledge about the developmental biology of freshwater shrimps we decided to document the 3D-localization of the midgut inside the body cavity of larval stages of N. davidi using X-ray microtomography, and to describe all structural and ultrastructural changes of the midgut epithelium (intestine and hepatopancreas) which occur during postembryonic development of N. davidi using light and transmission electron microscopy. We laid emphasis on stem cell functioning and cell death processes connected with differentiation. Our study revealed that while the intestine in both larval stages of N. davidi has the form of a fully developed organ, which resembles that of adult specimens, the hepatopancreas undergoes elongation and differentiation. E-cells, which are midgut stem cells, due to their proliferation and differentiation are responsible for the above-mentioned processes. Our study revealed that apoptosis is a common process in both larval stages of N. davidi in the intestine and proximal region of the hepatopancreas. In zoea III, autophagy as a survival factor is activated in order to protect cells against their death. However, when there are too many autophagic structures in epithelial cells, necrosis as passive cell death is activated. The presence of all types of cell death in the midgut in the zoea III stage confirms that this part of the digestive tract is fully developed and functional. Here, we present the first description of apoptosis, autophagy and necrosis in the digestive system of larval stages of Malacostraca and present the first description of their hepatopancreas elongation and differentiation due to midgut stem cell functioning.

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Effect of attractant stimuli, starvation period and food availability on digestive enzymes in the redclaw crayfish Cherax quadricarinatus (Parastacidae)

Cited by 14 publications

References 61 publications

The effects of seasonal, sex and size on the digestive enzyme activities in freshwater crayfish (Astacus leptodactylus Eschscholtz, 1823)

The effects of seasonal, sex and size on the digestive enzyme activities in freshwater crayfish (Astacus leptodactylus Eschscholtz, 1823)

Development of enzymes during ontogeny of two freshwater Decapoda:Aegla uruguayana(Aeglidae) andMacrobrachium borellii(Palaemonidae)

Postembryonic development and differentiation of the midgut in the freshwater shrimp Neocaridina davidi (Crustacea, Malacostraca, Decapoda) larvae

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