When Nature Requires a Resource to Be Used—The Case of Callinectes sapidus: Distribution, Aggregation Patterns, and Spatial Structure in Northwest Europe, the Mediterranean Sea, and Adjacent Waters

Biology, Journal Year: 2024, Volume and Issue: 13(4), P. 279 - 279

Published: April 19, 2024

The Atlantic blue crab Callinectes sapidus, which is native to the western coast and listed among 100 most invasive alien species in Mediterranean Sea, attracting a great deal of interest because its rapid colonisation new areas, significant increase population, impacts it may have on ecosystems ecosystem services. Outside natural distribution range, was first found European coasts early 1900s introduced into Sea few decades later, probably through ballast water. Currently, almost entire Basin also expanding Black along north African Iberian coasts. Based systematic review C. sapidus occurrences, this study describes distribution, aggregation patterns, spatial structure Northwest Europe, adjacent waters series ecological indicators elaborated using GIS spatial–temporal statistics. main results highlight that waters, while northern population remains confined some areas. Furthermore, detection methods are analysed, finding traps nets frequently used methods, management suggestions provided.

Language: Английский

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Free Pass Through the Pillars of Hercules? Genetic and Historical Insights Into the Recent Expansion of the Atlantic Blue Crab Callinectes sapidus to the West and the East of the Strait of Gibraltar

Frontiers in Marine Science, Journal Year: 2022, Volume and Issue: 9

Published: July 12, 2022

The invasive Atlantic blue crab Callinectes sapidus has considerably extended its distribution along the Gulf of Cadiz and Moroccan coasts in northeast Atlantic. This could indicate a new introduction event from native area, case detectable genetic differences Mediterranean Sea populations. To test this reconstruct invasion, we assessed structure crabs Alboran Sea. We used sequences mitochondrial gene cytochrome c oxidase subunit I (COI), almost full length (1511 basepairs), 149 individuals three sites Spanish coast, two Sea, Cadiz. Our data reveal low variability, with only haplotypes (here referred to as CSWM1 CSWM2), compared known high diversity range, indicating strong founder effect study region. Here document an inversion haplotype predominance between regions, CSWM2 being dominant most but less frequent suggests secondary propagules into investigated rather than nor natural westward expansion environmental selection one over other. Further studies additional populations would help better unveil history yet another species

Language: Английский

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Aquatic species shows asymmetric distribution range shifts in native and non-native areas

Frontiers in Marine Science, Journal Year: 2023, Volume and Issue: 10

Published: May 2, 2023

Introduction Climate change is reshaping the geographical distribution of species across globe. In marine ecosystems, climate creates novel challenges to an environment impacted by numerous anthropogenic stressors. Forecasting shifts in distribution, including expansion non-indigenous under scenarios, a management challenge for today’s world. Methods We applied Bayesian Additive Regression Tree (BART) models investigate environmental factors modulating occurrence and habitat preferences Atlantic blue crab Callinectes sapidus Rathbun, 1896 native non-native areas. With BART models, we also aimed predict its current future distributions two scenarios (RCPs 4.5 8.5). were performed using global occurrences – recorded from 1830 2022 several covariates (i.e., water temperature, salinity, velocity, rugosity). Model accuracy was assessed with Area Under Curve (AUC) True Skill Statistics (TSS) criteria. Cross-validation experiments made balance prediction uncertainty model intervals. Results discussion AUC TSS values indicated that data validation successful model. Water temperature most critical variable affecting presence probability crab. The predicts asymmetric range on both sides Ocean. populations will experience broader their than range, RCP 8.5 scenario outputs wider end century. Overall, anticipate significant ecological changes areas often equivalent induced invasive species, so lessons learned ecologists managers provide actionable insights

Language: Английский

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Turning up the heat: Effects of temperature on agonistic acoustic communication in the two-spotted goby (Pomatoschistus flavescens)

Marine Environmental Research, Journal Year: 2024, Volume and Issue: 202, P. 106714 - 106714

Published: Sept. 3, 2024

Acoustic communication is linked to fitness traits in many animals, but under the current scenario of global warming, sound signals can be affected by rising temperatures, particularly ectothermic organisms such as fishes. This study examines effect water temperature acoustic two-spotted goby, Pomatoschistus flavescens. To address this, we looked at different temperatures on features drums produced males during territorial defence and related it with their auditory sensitivity. We also analysed differences between male agonistic previously reported courtship sounds, better understand how may conditions. recorded goby intrusions for 10 minutes 16°C, 19°C, 21°C laboratory. found that were shorter, had fewer pulses shorter pulse periods higher temperature, contrast peak frequency remained unaffected. Male mating (recorded a previous study) 16°C only differed period, which was drums. Hearing thresholds obtained Auditory Evoked Potentials revealed sensitivity below 400 Hz, matching main energy sounds. Our findings suggest increasing could potentially affect this species reducing duration drums, might hinder effective communication. Nevertheless, impact not significant there good match best hearing range calls, influenced temperature. As fish other are increasingly threatened multiple anthropogenic stressors, including future research should changes within more realistic multi-stressor scenario.

Language: Английский

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Undetected non-indigenous species in the Sado estuary (Portugal), a coastal system under the pressure of multiple vectors of introduction

Journal of Coastal Conservation, Journal Year: 2023, Volume and Issue: 27(5)

Published: Sept. 25, 2023

Language: Английский

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