Chemical Ecology and Social Behavior of Anomura

Gherardi, Francesca; Tricarico, Elena

doi:10.1007/978-0-387-77101-4_15

Cited by 5 publications

(8 citation statements)

References 48 publications

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“…Furthermore, behavioral studies have shown that males of C. maenas are attracted by female pheromones during the mating period, thus providing additional evidence, at least in males, for a well-developed olfactory sense (Bamber and Naylor 1996;Eales 1973;Hardege et al 2011). As far as anomuran crustaceans are concerned, it has to be noted that this group has achieved model status to study the interplay of chemical ecology, olfactory-guided and social behavior, leaving little doubt about their olfactory abilities (reviews: Gherardi and Tricarico 2007;Gherardi and Tricarico 2011).…”

Section: Deutocerebrum and Olfactory Pathwaymentioning

confidence: 98%

Comparative brain architecture of the European shore crab Carcinus maenas (Brachyura) and the common hermit crab Pagurus bernhardus (Anomura) with notes on other marine hermit crabs

et al. 2012

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The European shore crab Carcinus maenas and the common hermit crab Pagurus bernhardus are members of the sister taxa Brachyura and Anomura (together forming the taxon Meiura) respectively. Both species share similar coastal marine habitats and thus are confronted with similar environmental conditions. This study sets out to explore variations of general brain architecture of species that live in seemingly similar habitats but belong to different major malacostracan taxa and to understand possible differences of sensory systems and related brain compartments. We examined the brains of Carcinus maenas, Pagurus bernhardus, and three other hermit crab species with immunohistochemistry against tyrosinated tubulin, f-actin, synaptic proteins, RF-amides and allatostatin. Our comparison showed that their optic neuropils within the eyestalks display strong resemblance in gross morphology as well as in detailed organization, suggesting a rather similar potential of processing visual input. Besides the well-developed visual system, the olfactory neuropils are distinct components in the brain of both C. maenas and P. bernhardus as well as the other hermit crabs, suggesting that close integration of olfactory and visual information may be useful in turbid marine environments with low visibility, as is typical for many habitats such as, e.g., the Baltic and the North Sea. Comparing the shape of the olfactory glomeruli in the anomurans showed some variations, ranging from a wedge shape to an elongate morphology. Furthermore, the tritocerebrum and the organization of the second antennae associated with the tritocerebrum seem to differ markedly in C. maenas and P. bernhardus, indicating better mechanosensory abilities in the latter close to those of other Decapoda with long second antennae, such as Astacida, Homarida, or Achelata. This aspect may also represent an adaptation to the "hermit lifestyle" in which competition for shells is a major aspect of their life history. The shore crab C. maenas, on the other hand seems to rely much less on mechanosensory information mediated by the second antennae but in water, the visual and the olfactory senses seem to be the most important modalities.

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Section: Deutocerebrum and Olfactory Pathwaymentioning

confidence: 98%

Comparative brain architecture of the European shore crab Carcinus maenas (Brachyura) and the common hermit crab Pagurus bernhardus (Anomura) with notes on other marine hermit crabs

et al. 2012

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“…In this case, although a food odor is the cue, the goal is not food but a potential exchange of shells negotiated at a trade "market" made up of all the attracted crabs. Even one more available shell may cause a cascade of shell exchanges (Gherardi & Tricarico, 2011). Similarly, despite the danger associated with such a signal, odors emitted by dead or damaged conspecifics are also attractive, with the goal to induce acquisition of better shells (Gherardi & Tricarico, 2011).…”

Section: Chemical Cues Help Crustaceans Obtain Food and Habitatmentioning

confidence: 99%

“…Even one more available shell may cause a cascade of shell exchanges (Gherardi & Tricarico, 2011). Similarly, despite the danger associated with such a signal, odors emitted by dead or damaged conspecifics are also attractive, with the goal to induce acquisition of better shells (Gherardi & Tricarico, 2011).…”

Section: Chemical Cues Help Crustaceans Obtain Food and Habitatmentioning

confidence: 99%

Advances in Chemical Sensors

Wang¹

2012

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Academy of Sciences (IOA-CAS), who received his MS degree from the Central South University of China in 2002, and his PhD degree from IOA-CAS in 2005. From 2005 to 2009, he worked as a postdoctoral researcher and research professor at the microsystem laboratory of the Ajou University in Korea. Prof. Wang worked at the Freiburg University supported by the Humboldt Foundation as a guest professor in 2010, and received the "Experienced researcher" award from Humboldt Foundation of Germany for his outstanding research work in SAW technology. He joined the IOA-CAS as an associate professor of acoustical microsystems Lab. and as a professor in 2007 and 2011 respectively.His current research involves acoustic wave devices for sensing applications and wireless sensor, etc. Prof. Wang is the author or co-author of more than 50 papers in a refereed international journal, more than 40 communications in international conferences and over 10 patents.

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“…Pagurus bernhardus is the most common hermit crab in British intertidal environments, occupying empty gastropod shells to protect their fragile abdomen (Lancaster 1988). Hermit crabs are known to respond to predator odours by altering their behaviour (Rosen et al 2009) and their social interactions, shell selection and foraging rely on chemical signalling (Gherardi and Tricarico 2010). Whilst the average annual changes in ocean acidity due to climate change are small compared to the short life span of hermit crabs, the crustaceans routinely experience high fluctuations in acidity and temperature; Living in intertidal zones, hermit crabs inhabit environments of extremes (Wolfe et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Ocean Acidification Amplifies the Olfactory Response to 2-Phenylethylamine: Altered Cue Reception as a Mechanistic Pathway?

et al. 2021

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With carbon dioxide (CO2) levels rising dramatically, climate change threatens marine environments. Due to increasing CO2 concentrations in the ocean, pH levels are expected to drop by 0.4 units by the end of the century. There is an urgent need to understand the impact of ocean acidification on chemical-ecological processes. To date, the extent and mechanisms by which the decreasing ocean pH influences chemical communication are unclear. Combining behaviour assays with computational chemistry, we explore the function of the predator related cue 2-phenylethylamine (PEA) for hermit crabs (Pagurus bernhardus) in current and end-of-the-century oceanic pH. Living in intertidal environments, hermit crabs face large pH fluctuations in their current habitat in addition to climate-change related ocean acidification. We demonstrate that the dietary predator cue PEA for mammals and sea lampreys is an attractant for hermit crabs, with the potency of the cue increasing with decreasing pH levels. In order to explain this increased potency, we assess changes to PEA’s conformational and charge-related properties as one potential mechanistic pathway. Using quantum chemical calculations validated by NMR spectroscopy, we characterise the different protonation states of PEA in water. We show how protonation of PEA could affect receptor-ligand binding, using a possible model receptor for PEA (human TAAR1). Investigating potential mechanisms of pH-dependent effects on olfactory perception of PEA and the respective behavioural response, our study advances the understanding of how ocean acidification interferes with the sense of smell and thereby might impact essential ecological interactions in marine ecosystems.

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Chemical Ecology and Social Behavior of Anomura

Cited by 5 publications

References 48 publications

Comparative brain architecture of the European shore crab Carcinus maenas (Brachyura) and the common hermit crab Pagurus bernhardus (Anomura) with notes on other marine hermit crabs

Comparative brain architecture of the European shore crab Carcinus maenas (Brachyura) and the common hermit crab Pagurus bernhardus (Anomura) with notes on other marine hermit crabs

Advances in Chemical Sensors

Ocean Acidification Amplifies the Olfactory Response to 2-Phenylethylamine: Altered Cue Reception as a Mechanistic Pathway?

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