Morphotypes, structure trophique et état de maturité de la nématofaune de la lagune de Bizerte

Authors

  • Fehmi BOUFAHJA Université de Carthage. Faculté des Sciences de Bizerte. Laboratoire de Biosurveillance de l’Environnement (L.B.E). Unité d’écologie côtière et d’écotoxicologie marine
  • H. BEYREM Université de Carthage. Faculté de sciences de Bizerte. Laboratoire de Biosurveillance de l’Environnement (L.B.E). Unité d’écologie côtière et d’écotoxicologie marine
  • N. ESSID Université de Carthage. Faculté de sciences de Bizerte. Laboratoire de Biosurveillance de l’Environnement (L.B.E). Unité d’écologie côtière et d’écotoxicologie marine
  • A. HEDFI Université de Carthage. Faculté de sciences de Bizerte. Laboratoire de Biosurveillance de l’Environnement (L.B.E). Unité d’écologie côtière et d’écotoxicologie marine
  • E. MAHMOUDI Université de Carthage. Faculté de sciences de Bizerte. Laboratoire de Biosurveillance de l’Environnement (L.B.E). Unité d’écologie côtière et d’écotoxicologie marine
  • P. AÏSSA Université de Carthage. Faculté de sciences de Bizerte. Laboratoire de Biosurveillance de l’Environnement (L.B.E). Unité d’écologie côtière et d’écotoxicologie marine

Keywords:

Pollution monitoring, Sexual maturity, Environmental effects, Sedimentation, Turbidity, Feed composition, Indicator species, Nematoda, Marine, Tunisia, Bizerte

Abstract

Ten samples of sediments and repository waters were taken from the coastal domain of Bizerte lagoon during winter 2001. Our results showed that proportionality exist between body width of nematodes and sedimentary loads of silt/clay and metals. In other side, the trophic structure of nematodes was associated with turbidity and water nitrites. Indeed, selective deposit-feeders, mainly bacterivorous, were positively correlated with concentration of water nitrites and then with bacteria’s nitrification. The nematodes 2A, feeding benthic diatoms, were negatively related to turbidity. Positive correlation was recorded between sedimentary manganese and the ratio related non-selective deposit-feeders with epigrowth-feeders 1B/2A. In the other hand, juveniles seem probably more sensitive to the sedimentary hydrocarbons than adults.

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Published

2006-02-01

How to Cite

1.
BOUFAHJA F, BEYREM H, ESSID N, HEDFI A, MAHMOUDI E, AÏSSA P. Morphotypes, structure trophique et état de maturité de la nématofaune de la lagune de Bizerte. Bull. Inst. Natl. Sci. Technol. Mer [Internet]. 2006Feb.1 [cited 2024Apr.27];33:37-45. Available from: https://www.instm-bulletin.tn/index.php/bulletin/article/view/670

Issue

Vol. 33 (2006)

Section

Article

ARK

https://n2t.net/ark:/68747/INSTM.Bulletin.v33.670

License

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

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