Whiteleg shrimp (Litopenaeus vannamei, Boone, 1931) isotrypsins: Their genotype and modulation

Sáinz, Juan Carlos; García‐Carreño, Fernando; Córdova-Murueta, Julio H.; Cruz-Hernández, Pedro

doi:10.1016/j.jembe.2005.05.021

Cited by 27 publications

(21 citation statements)

References 21 publications

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“…The genetic mechanism for such flexible trypsin production is unknown, but Jump & Clark (1999) maintained that environmental factors may interact with the genome and allow cells to adjust to an on/off switch gene expression. Sainz et al (2005), on the other hand, concluded from a study of isotrypsin patterns that the regulation was quantitative not qualitative and that changes in trypsin activity and in trypsin mRNA by internal and external stimuli must be related to changes in the rate of synthesis of the established isoenzymes. In any case, trypsin regulation is one possible mecha- Table 2.…”

Section: Discussionmentioning

confidence: 99%

Effect of incubation temperature on growth performance in Atlantic salmon

Finstad¹,

Jönsson²

2012

Mar. Ecol. Prog. Ser.

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Interspecific variations in thermal growth performance of ectotherms have received considerable recent interest fueled by the focus on ecological climate change effects. Amongpopulation variations in growth are commonly observed in field studies. However, the role of pheno typic plasticity in shaping this variation is largely unexplored in teleost fishes. Here, we tested for the effect of incubation temperature on thermal scaling of growth and maximum growth performance of the anadromous salmonid Atlantic salmon Salmo salar L. Salmon eggs were incubated and reared until the onset of exogenous feeding at either heated or natural temperatures or transferred from natural to heated temperatures at the time of hatching, creating 3 different embryonic temperature treatments (heated, natural or mixed). We subsequently tested for juvenile growth performance of these groups at 8 temperatures ranging from 6 to 24°C. Maximum growth was significantly higher in the heated than the natural and mixed incubation temperature groups, but we did not observe differences in the thermal scaling of growth performance. Neither the upper nor lower thermal limit for growth nor the optimal growth temperature differed be tween the 3 incubation temperature treatments. However, thermal conditions experienced by in cubating embryos affected later growth performance. Although similar results have been observed previously among reptiles, this is to our knowledge the first empirical support for this hypothesis among teleost fishes. Phenotypic plasticity in growth performance can likely explain many of the contrasting findings from previous research on countergradient growth effects in teleost fishes.

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Section: Discussionmentioning

confidence: 99%

Effect of incubation temperature on growth performance in Atlantic salmon

Finstad¹,

Jönsson²

2012

Mar. Ecol. Prog. Ser.

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“…The true molecular masses of these enzymes are 30 to 33 kDa. According to Sainz et al (2005), all analysed individuals of our experiment belong to the same trypsin phenotype 1 (of 3) expressing all 3 trypsin isoforms. The similar expression patterns of endopeptidases in each of the 3 treatments indicate that the enzymatic capacity of the shrimp to utilize dietary proteins is not affected by the origin of food even if it largely consists of fish egesta.…”

Section: Discussionmentioning

confidence: 99%

Antioxidant response and body composition of whiteleg shrimp co-cultured with Nile tilapia in recirculating aquaculture

Sharawy¹,

Thiele²,

Abbas³

et al. 2017

Aquacult. Environ. Interact.

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“…P. vannamei isotrypsins are codified at two loci: Locus ß, which is homozygous and yields isoenzyme C and Locus α, which is heterozygous, yielding isoenzymes A and B (Sainz et al . ). Additionally, Sainz et al .…”

Section: Types Of Digestive Peptidasesmentioning

confidence: 97%

“…Additionally, Sainz et al . () investigated the segregation of locus α in offspring from 20 families, demonstrating that isotrypsins are segregated according to Mendelian rules.…”

Section: Types Of Digestive Peptidasesmentioning

confidence: 99%

The toolbox for protein digestion in decapod crustaceans: a review

Toro¹,

García‐Carreño²

2018

Reviews in Aquaculture

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Pancrustacea, including both crustaceans and insects, is the most abundant and diverse clade of Animalia and occupy all types of environments. They are studied because of their ecological, agricultural, health and economic issues, some being delicatessens. Crustaceans evolved during the Cambrian, thanks to adaptations, such as macrophagy, that allowed them to prey on diverse and energy-rich foods, which depended on complex digestive systems that drove evolution. As heterotrophs, crustaceans depend on their ability to obtain nutrients to fulfil their material, mostly carbon and energy requirements. Protein is the most important nutrient; up to 70% dry mass of a crustacean is protein. Hence, food protein is needed to obtain free amino acids to synthesize protein de novo (from scratch), because animals cannot synthesize the ten essential amino acids de novo. The ability to digest protein must have emerged early in evolution, as shown by the finding of trypsin coding genes in eubacterial genomes. Primitive organisms selectively fixed the ability to use foreign protein as a source of amino acids by synthesizing enzymes, now termed peptidases, which were capable of recognizing and hydrolysing peptide bonds in a specific region of a polypeptide chain, based on specificity for the side chains of amino acid residues in the carboxylic side of the site of cleavage. Here, we present a brief history on what and how digestive peptidases in crustaceans became known.

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Whiteleg shrimp (Litopenaeus vannamei, Boone, 1931) isotrypsins: Their genotype and modulation

Cited by 27 publications

References 21 publications

Effect of incubation temperature on growth performance in Atlantic salmon

Effect of incubation temperature on growth performance in Atlantic salmon

Antioxidant response and body composition of whiteleg shrimp co-cultured with Nile tilapia in recirculating aquaculture

The toolbox for protein digestion in decapod crustaceans: a review

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