Etude morphometrique du mollusque gasteropode Patella caerulea Linnaeus, 1758 des cotes nord de la Tunisie.

Authors

  • Hela BELKHODJA Institut Superieur de Peche et d'Aquaculture de Bizerte, Menzel Jmil, BP-15, 7080 Bizerte, Tunisia
  • M. S. ROMDHANE Institut Superieur de Peche et d'Aquaculture de Bizerte, Menzel Jmil, BP-15, 7080 Bizerte, Tunisia

Keywords:

Growth rate, Animal morphology, Growth, Length, Shells, Population dynamics, Size, Patella caerulea, Marine, MED, Tunisia, North

Abstract

The limpet species, Patella caerulea (mollusks, gastropods) is very common in almost all Tunisian rocky coasts. It shows complex ecological and behavioral characteristics which vary according to the environment where it lives. In this investigation we are interested in analyzing the morphometric diversity of the limpet from three rocky sites in the northern coasts of Tunisia (Bizerta Channel, La Goulette and Sidi Rais). Statistical tests: 'student, tests t of slope and of position' have been used in order to compare the slopes and the positions of the regression straight line between the 3 studied population. Results showed that, according to the global scale, the three allometric relations highlighted in this work revealed that the increase of the length shell is less important than those of the height and the width. In another hand, the increase of the width is slower that the height one of all the specimens studied from the 3 sites. These results reflect the adaptative response of the limpet following the physical and the ecological environment where it lives. The monthly variation of the relations: length/height and length/width in the limpets from the 3 studied sites showed that this species has a tendency to growth in height and width faster than the length. This study revealed significant differences between the morphometric characteristics of the three limpet population.

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Published

2012-01-10

How to Cite

1.
BELKHODJA H, ROMDHANE MS. Etude morphometrique du mollusque gasteropode Patella caerulea Linnaeus, 1758 des cotes nord de la Tunisie. Bull. Inst. Natl. Sci. Technol. Mer [Internet]. 2012Jan.10 [cited 2024Mar.29];39:15-23. Available from: https://www.instm-bulletin.tn/index.php/bulletin/article/view/497

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ARK