The First Recorded Occurrences and the Distribution of Physalia physalis (Hydrozoa: Physaliidae) in Algerian Waters

The First Recorded Occurrences and the Distribution of Physalia physalis (Hydrozoa: Physaliidae) in Algerian Waters

Recently, there have been recorded findings of the pleustonic siphonophore Physalia physalis Linnæus, 1758, in different regions of Algeria. Several colonies washed ashore during March and May 2021 along the Algerian coast. Thirty colonies were observed on surface water and stranded on the beach bet...

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Bibliographic Details
Published in:Ocean science journal Vol. 57; no. 3; pp. 411 - 419
Main Authors: Bachouche, Samir, Ghribi, Tarek, Rouidi, Samir, Etsouri, Mohamed, Belkacem, Yasmine, Selmani, Rabah, Djellali, Mostapha, Hadj Aissa, Raouf, Grimes, Samir
Format: Journal Article
Language:English
Published: Seoul Korea Institute of Ocean Science & Technology and The Korean Society of Oceanography 01-09-2022
Springer Nature B.V
Subjects:
Aquatic invertebrates
Aquatic Pollution
Beaches
Colonies
Earth and Environmental Science
Earth Sciences
Marine & Freshwater Sciences
Marine invertebrates
New records
Oceanography
Oceans
Physalia physalis
Sea surface
Spatial distribution
Surface water
Waste Water Technology
Water Management
Water Pollution Control
Wind pressure
Algeria
Alien species
Algeria
Cnidarians
Harmful species
Western Mediterranean Sea
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Summary:Recently, there have been recorded findings of the pleustonic siphonophore Physalia physalis Linnæus, 1758, in different regions of Algeria. Several colonies washed ashore during March and May 2021 along the Algerian coast. Thirty colonies were observed on surface water and stranded on the beach between March and May from Beni Saf (35.30182° N;-1.40293° W) to Skikda (36.916557° N;7.162915° E). The highest number of such strandings of this species was recorded in Tipaza and Algiers. This is the first record of P. physalis in Algeria, extending the previously known distributions from the tropical and sub-tropical latitudes of Atlantic, Pacific and Indian oceans and may represent a danger to human health and the coastal economy. Strandings of P. physalis were notably associated with sea surface current and wind forces pushing P. physalis to become stranded on beaches. Our findings highlight the need for a monitoring program to be developed to understand more about trends associated with changes in the distribution and impact of this species. This work provides an update on the spatial distribution of P. physalis in the Mediterranean Sea.
ISSN:1738-5261
2005-7172
DOI:10.1007/s12601-022-00069-9