The use of physicochemical properties to assess changes in the cuticle structure of crustaceans: Case of the prawn Palaemon serratus and its moult cycle.

The crustacean cuticle is a composite material acting as a shell, but also linked with other physiological functions as respiration, locomotion or reproduction. The present study aimed to characterize for the first time the cuticle properties of the marine prawn Palaemon serratus using thermal (TGA) and chemical (FTIR, ICP-AES) techniques. The use of native lyophilized cutiles also enabled to estimate the complexity of the cuticle structure of P.

Larval feeding activity and use of embryonic resources determine juvenile performance of the common prawn Palaemonserratus.

Phenotypic links are the potential for "carryover" of effects of experience during one life history stage into performance and selection at subsequent stages. They reflect plastic responses to the environment experienced during an early phase on the phenotype of subsequent phases. We are studying these effects by following individuals of the shrimp Palaemon serratus from the embryonic (eggs carried by females) through the larval phase (pelagic) to the juvenile phase (benthic).

Cadmium Highlights Common and Specific Responses of Two Freshwater Sentinel Species, and .

Zebra mussel (ZM), , commonly used as a sentinel species in freshwater biomonitoring, is now in competition for habitat with quagga mussel (QM), This raises the question of the quagga mussel's use in environmental survey. To better characterise QM response to stress compared with ZM, both species were exposed to cadmium (100 µg·L), a classic pollutant, for 7 days under controlled conditions. The gill proteomes were analysed using two-dimensional electrophoresis coupled with mass spectrometry.

Advancing environmental monitoring across the water continuum combining biomarker analysis in multiple sentinel species: A case study in the Seine-Normandie Basin (France).

Nowadays, biomarkers are recognized as valuable tools to complement chemical and ecological assessments in biomonitoring programs. They provide insights into the effects of contaminant exposures on individuals and establish connections between environmental pressure and biological response at higher levels. In the last decade, strong improvements in the design of experimental protocols and the result interpretation facilitated the use of biomarker across wide geographical areas, including aquatic continua.

Combined effects of temperature and diet on the performance of larvae produced by young and old Palaemon serratus females.

Seasonal variations in environmental conditions determine the success of decapod larval development, and females transmit more energy in sub-optimal conditions to maximise the fitness of their offspring. The objective of this study was to focus on the combined effects of temperature (14, 18 and 22 °C) and food quality on the performance of larvae produced by 5 young (0+) and 5 old (I+) Palaemon serratus females. We prepared 3 diets based on Artemia, in decreasing order of total fatty acid content: freshly hatched nauplii (N), unenriched metanauplii (M) and metanauplii enriched with a mixture of microalgae (ME).