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Some strange sensing tools
Simon, L.; Flandroit, A.; Caulier, G. (2024). Some strange sensing tools, in: Mees, J. et al. Book of abstracts – VLIZ Marine Science Day, 6 March 2024, Oostende. VLIZ Special Publication, 91: pp. 119
In: Mees, J.; Seys, J. (Ed.) (2024). Book of abstracts – VLIZ Marine Science Day, 6 March 2024, Oostende. VLIZ Special Publication, 91. Flanders Marine Institute (VLIZ): Oostende. vii + 130 pp. https://dx.doi.org/10.48470/71
In: VLIZ Special Publication. Vlaams Instituut voor de Zee (VLIZ): Oostende. ISSN 1377-0950, meer
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| Beschikbaar in | Auteurs |
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Documenttype: Samenvatting
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| Trefwoorden |
Ammothea hilgendorfi (Böhm, 1879) [WoRMS]; Pycnogonida [WoRMS]
Marien/Kust |
| Author keywords |
Pycnogonids; Sea Spiders; Ammothea Hilgendorfi; Sensory Organs; Multimodal Communication |
| Auteurs | | Top |
- Simon, L.
- Flandroit, A.
- Caulier, G.
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| Abstract |
Pycnogonids are particularly understudied marine arthropods despite their wide distribution. The main reason is that they usually display low population densities. However, the northern pacific species Ammothea hilgendorfi is now considered invasive in Europe and a proliferating population was discovered in 2022 at the North Sea (Knokke-Heist, Belgium), reaching record breaking densities. A 24-month monitoring was consequently conducted to better understand the dynamic of this population. Such a great biological material quantity was the opportunity to deepen the understanding of these unique yet poorly known animals. Indeed, pycnogonids present quite specific ecology and morphology, including an abdomen and trunk reduction, which induced the extension of internal systems into the legs. Sea spiders also display ovigers, specialized egg-carrying appendages used by males to take care of their offspring; and a tubercle, periscope-like structure bearing the eyes and providing a 360° vision field. They also feature peculiar sensory organs (i.e., lateral sense organ, Gabelborsten, slit organ, hinged bristles) for which the functions remain hypothesized. Only the structure was described in model species. To provide insight on how such organisms perceive their environment, the aim of this study was to describe the sensory organs of A. hilgendorfi. In the same perspective, their chemotaxis was investigated in a set-up that would also help elucidate other stimuli (i.e. multimodal communication). |
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