Predation of the invasive green crab Carcinus maenas on the edible snail Buccinastrum deforme, targeted as the most important nearshore marine gastropod fishery from Patagonia, Argentina

Márquez, Federico; Zabala, Soledad; Bökenhans, Verena; Cumplido, Mariano; Espinosa, Free; Bigatti, Gregorio; Averbuj, Andres

doi:10.1016/j.rsma.2023.103299

Cited by 2 publications

(2 citation statements)

References 39 publications

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“…Although food cues may have a positive response on crabs, this odour would not be species specific to C. maenas , as many marine organisms are attracted to similar food odours, predominantly amino acids and peptides. C. maenas is one the most prolific marine invasive species, impacting commercial bivalve cultures as well as threatening the stability of ecosystems [ 52 ]. Our research provides insight into the complexity of utilising sex pheromones as a potential integrated pest management strategy in a changing world.…”

Section: Discussionmentioning

confidence: 99%

Effects of pH on Olfactory Behaviours in Male Shore Crabs, Carcinus maenas

Ohnstad,

Jones,

Howard

et al. 2024

Animals

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The effects of climate change are becoming more apparent, predominantly concerning the impacts of ocean acidification on calcifying species. Many marine organisms rely on chemical signals for processes such as foraging for food, predator avoidance, or locating mates. The process of how chemical cues in marine invertebrates function, and how this sensory mode is affected by pH levels, is less researched. We tested the impact of reduced pH (7.6), simulating end-of-the-century predicted average ocean pH, against current oceanic pH conditions (8.2), on the behavioural response of male shore crabs Carcinus maenas to the female sex pheromone bouquet consisting of Uridine–diphosphate (UDP) and Uridine–triphosphate (UTP). While in current pH conditions (8.2), there was a significant increase in sexual interactions in the presence of female pheromone, males showed reduced sexual behaviours at pH 7.6. The crab weight–pH relationship, in which larger individuals respond more intensely sexually in normal pH (8.2), is reversed for both the initial detection and time to locate the cue. These results indicate that lowered pH alters chemical signalling in C. maenas also outside the peak reproductive season, which may need to be taken into account when considering the future management of this globally invasive species.

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Section: Discussionmentioning

confidence: 99%

Effects of pH on Olfactory Behaviours in Male Shore Crabs, Carcinus maenas

Ohnstad,

Jones,

Howard

et al. 2024

Animals

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“…alter ecosystem processes, and diminish local biodiversity (Gregory et al, 2024;Wardle et al, 2011). Consequently, mitigating the negative impacts of invasive species, especially invasive predators, on native food webs has become a primary objective of conservation agencies worldwide (Doherty & Ritchie, 2016;Márquez et al, 2024).…”

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confidence: 99%

Counteractive effects of predator invasion and habitat destruction on predator–prey systems

Zhang,

Wang,

Yang

et al. 2024

Ecology and Evolution

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Alien species invasion and habitat destruction are among the primary threats to native animal communities, particularly for native predator–prey systems. However, when predator invasion and habitat destruction co‐occur, it remains unclear whether their respective threats to native systems compensate each other or accumulate, as well as how these effects respond to the different characteristics of predator invasion and habitat destruction. In this study, we developed a spatially explicit simulation model with one prey species and one predator species and exposed it to invasive predators and habitat destruction with different properties. The results revealed the following insights: (1) Habitat destruction can compensate threats to native predator–prey systems from global predator invasion only when native predators possess predation capability similar to those of the invaders. In other scenarios, cumulative effects arise from predator invasion and habitat destruction. (2) Low levels of habitat destruction occurring at a faster rate, in conjunction with a substantial number of global invasive predators being present, can better compensate their respective threats to native predator–prey systems than the other scenarios. These findings provide valuable insights into situations where habitat destruction and alien species invasion coincide. They raise the question of whether we can leverage the interaction between them to reduce threats to biodiversity.

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Predation of the invasive green crab Carcinus maenas on the edible snail Buccinastrum deforme, targeted as the most important nearshore marine gastropod fishery from Patagonia, Argentina

Cited by 2 publications

References 39 publications

Effects of pH on Olfactory Behaviours in Male Shore Crabs, Carcinus maenas

Effects of pH on Olfactory Behaviours in Male Shore Crabs, Carcinus maenas

Counteractive effects of predator invasion and habitat destruction on predator–prey systems

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