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Morpho-structural adaptations of the integument in different aquatic organisms
Alessio Alesci1, Simona Pergolizzi1, Doaa M Mokhtar2
1Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, University of Messina, 98166 Messina, Italy.
Acta Histochemica
|April 19, 2023
Summary
This study compares invertebrate and vertebrate integuments, revealing conserved sensory epidermal cells across evolution. It highlights structural adaptations in gastropods, ascidians, hagfish, and teleosts.
Area of Science:
- Comparative anatomy
- Evolutionary biology
- Integumentary system research
Background:
- The integument serves as a vital barrier against environmental threats.
- Invertebrate and vertebrate integuments exhibit significant structural differences.
- Vertebrate epidermis is multilayered with specialized cells, unlike the simpler invertebrate epidermis.
Purpose of the Study:
- To investigate the morpho-structural adaptations of the integument throughout evolution.
- To analyze integumentary changes in specific invertebrate and vertebrate species.
- To focus on the characteristics of sensory epidermal cells in these species.
Main Methods:
- Morphological analysis
- Histological analysis
- Immunohistochemical analysis
Main Results:
- Identified diverse cell types including mucous, serous glandular, clavate, club, thread, and support cells.
- Detected solitary sensory epidermal cells immunoreactive to serotonin and calbindin in all analyzed species.
- Documented species-specific variations in integument structure.
Conclusions:
- The study provides a comparative analysis of integuments across different species.
- New insights into the phylogenetic conservation of sensory epidermal cells are presented.
- Structural evolutionary changes in invertebrate and vertebrate integuments are elucidated.
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