Population structure of the invasive Atlantic blue crab, Callinectes sapidus on the Eastern Adriatic coast (Croatia, Montenegro)

The Atlantic blue crab, Callinectes sapidus, is a highly invasive species that poses a significant threat to Mediterranean ecosystems. In the last two decades, it has become established in several marine and estuarine areas of the eastern Adriatic Sea, resulting in a decline in commercial catches an...

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Bibliographic Details
Published in:NAŠE MORE 2023-07, Vol.70 (3), p.153-159
Main Authors: Glamuzina, Luka, Pešić, Ana, Marković, Olivera, Tomanić, Jovana, Pećarević, Marijana, Dobroslavić, Tatjana, Brailo Šćepanović, Marina, Conides, Alexis, Grđan, Sanja
Format: Article
Language:English
Subjects:
blue crab
Blue crabs
Brackishwater crustaceans
Brackishwater environment
Callinectes sapidus
Carapace
Crustaceans
Decapoda
Eastern Adriatic Sea
Ecosystems
Estuaries
Exoskeleton
Females
Fish
Fishing
Fishing equipment
Fishing gear
Introduced species
Invasive species
length-weight relationships
Males
Marine crustaceans
Nonnative species
Population structure
Ports
Reviews
Rivers
Salinity
Salt
sex ratio
Shellfish
Water temperature
Weight
Width
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Summary:The Atlantic blue crab, Callinectes sapidus, is a highly invasive species that poses a significant threat to Mediterranean ecosystems. In the last two decades, it has become established in several marine and estuarine areas of the eastern Adriatic Sea, resulting in a decline in commercial catches and damage to fishing gear. This article reviews the current status of blue crab invasion in Montenegro and Croatia and analyses its abundance and population structure. Overall 619 crabs were sampled (male:female ratio, 1:1.91). Both carapace width and weight differed significantly between males and females, with males having a wider carapace and more weight. There was a significant difference in carapace width and weight among sites. For the total population, the mean male and female carapace width was 130.3 ± 30.8 and 108.8 ± 41.4 mm, respectively. In addition, the mean male and female weight was 187.2 ± 85.6 and 132.5 ± 39.1 g, respectively. Coefficient b between the weight and carapace width of blue crabs was significant at all locations, although it varied between males and females. This work will also document the impacts of the blue crab invasion on local ecosystems and provide comprehensive overview of populations structures and shed light on this important aspect of blue crab ecology.
ISSN:0469-6255
1848-6320
DOI:10.17818/NM/2023/SI3