2026-04-14T05:12:03Zhttps://recercat.cat/oai/requestoai:recercat.cat:20.500.12327/30642025-10-22T11:02:35Zcom_2072_4428com_2072_4427col_2072_487898
RECERCAT
author
Prado, Patricia
author
Gairin, Ignasi
author
Falco, Silvia
other
Producció Animal
group
Aqüicultura
2025-10-22T11:02:35Z
2025-10-22T11:02:35Z
2024-06-20
Patricia, Prado, Ignasi Gairin, and Falco Silvia. 2024. “Effect of Bivalves’ Sand Burial Capacity on Predation in the Invasive Blue Crab, Callinectes Sapidus.” Journal of Marine Science and Engineering 12 (6): 1028. https://doi.org/10.3390/jmse12061028.
2077-1312
http://hdl.handle.net/20.500.12327/3064
https://doi.org/10.3390/jmse12061028
In the Ebro Delta (Catalonia, Spain), the abundance of burrowing bivalves has dramatically decreased, with the blue crab, Callinectes sapidus, being blamed by shellfish collectors. Trends from 2010 evidence a decrease in the capture of clams (Ruditapes spp.) before 2016 (start of blue crab fisheries), although a further decline in both clams and cockles (Cerastoderma glaucum) occurred in 2018. In contrast, captures of razor clams (Ensis siliqua) have increased by 3.6-fold since 2016. Predation risk for these taxa, with contrasting burrowing capacities (1.7 ± 0.3 cm, 0.4 ± 0.2 cm, and 26.3 ± 0.1 cm, respectively), was assessed using predation preference (N = 5 tanks; 5 individuals of each species) and no-choice experiments (N = 5 tanks; 15 individuals of the same taxa) in the absence and presence of sand. The results showed that, in the absence of sand, razor clams were fully preyed upon in 24 h, clams in 96 h, and cockles reached 60% after 144 h. Conversely, when sand was present, only 4% of razor clams were predated, while clams and cockles reached 60–100% in 120–144 h. The no-choice results featured similar patterns, depending on substrate availability. Overall, clams and cockles appear to be greatly vulnerable to blue crab predation, whereas razor clams may escape thanks to their deeper burrowing capacity.
eng
Attribution 4.0 International
Effect of Bivalves’ Sand Burial Capacity on Predation in the Invasive Blue Crab, Callinectes sapidus
info:eu-repo/semantics/article