Tuning of chemoreceptor cells of the second antenna of the American lobster (Homarus americanus) with a comparison of four of its other chemoreceptor organs

Voigt, Rainer; Atema, Jelle

doi:10.1007/bf00194115

Cited by 42 publications

(26 citation statements)

References 56 publications

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“…Besides the antennules, decapods crustaceans have chemioreceptors distributed into the mouthparts (SHELTON & LAVARACK 1970), in the dactyls and propods of chelipods and in the pereiopods (VOIGT & ATEMA 1992, GÓMES & ATEMA 1996. Despite the cephalic region includes most of the sensorial organs, the moving appendices have received most of the attention regarding cleaning, because the trichodactylids spent more time for clean them.…”

Section: Movement Of Chelipods In Direction To the Open Abdomen: The mentioning

confidence: 99%

Behavioral repertory of Trichodactylus panoplus (Crustacea: Trichodactylidae) under laboratory conditions

Zimmermann¹,

Aued²,

Machado³

et al. 2009

Zoologia (Curitiba, Impr.)

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This work describes the behavioral repertory of Trichodactylus panoplus von Martens, 1869, based on the animals' diel activity and the possible substrate preference under laboratory experiments. Three experimental replicates were carried out, each using six animals (three males and three females). There were four periods of observation a day, with a total of 864 observation sessions and 144 hours of experiments. A total of 15 behavioral acts divided into five categories were recorded: feeding, exploration of the environment, immobility, social interaction, and self-grooming. The obtained results suggest that T. panoplus has greater activity during the night (p < 0.05), yet without showing an activity peak. In addition, the acceptance of food does not depend on the photoperiod. There was a significant preference for gravel as the chosen substrate. The Morisita index indicates an aggregated distribution of these animals, confirming their preference for substrate with gravel. The increase in activity at night and the preference for substrate with gravel, which can be used to disguise these individuals, would be associated to some anti-predator strategies of these crabs against visually orientated predators

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Section: Movement Of Chelipods In Direction To the Open Abdomen: The mentioning

confidence: 99%

Behavioral repertory of Trichodactylus panoplus (Crustacea: Trichodactylidae) under laboratory conditions

Zimmermann¹,

Aued²,

Machado³

et al. 2009

Zoologia (Curitiba, Impr.)

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“…Decapod crustaceans have chemoreceptors distributed on their mouthparts (Shelton & Lavarack 1970), dactyls and propodus of claws and walking legs (Hatt 1984, Schmidt & Gnatzy 1989, Weissburg & Derby 1995, antennae (Tazaki & Shigenaga 1974, Voigt & Atema 1992, Gomez & Atema 1996, and antennules (Hazlett 1971, Reeder & Ache 1980, Devine & Atema 1982. These groups of sensilla have specialized chemosensory functions (Derby & Atema 1982).…”

Section: Introductionmentioning

confidence: 99%

Role of olfactory appendages in chemically mediated orientation of blue crabs

Keller¹,

Powell²,

Weissburg³

2003

Mar. Ecol. Prog. Ser.

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Benthic crustaceans such as the blue crab Callinectes sapidus use various sensory appendages to navigate chemical plumes. We characterized the role of different sensory structures in blue crabs during olfactory search by deafferenting (i.e. removing or rendering inactive) particular sensor populations and by quantifying odor-plume structure and flow dynamics. Our results indicate that blue crabs use both cephalic and thoracic appendages for olfactory-mediated orientation. Cephalic chemosensor deafferentation decreased search success, reduced walking speed and increased the duration of stationary periods. All these deficiencies are manifestations of the inability of crabs to sustain upstream progress. Crabs subjected to deafferentation of thoracic sensilla failed to correctly track the narrowing plume and showed an increased frequency of large course-corrections. Whereas cephalic sensors clearly function in motivating upstream movement during the search process, thoracic receptors aid in source localization. The differing functional roles of these 2 sets of appendages may be associated with different signal characteristics impinging on their chemosensor populations. Intermittent but intense signals received by the cephalic appendages may enable the crabs to identify attractive odors and sustain searching. Chemical signals impinging on legs are more homogeneous and may allow the crabs to acquire better information on the spatial patterns of chemical signal structure that are important for navigation. The simultaneous use of chemical signals at differing heights in the plume suggest that the 3D structure of these plumes is important for foraging success, and that different populations of neural receptors may be tuned to operate optimally in particular signal environments.

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“…The cephalic appendages, including first and second antennae, resemble olfaction organs, as they monitor the external fluid environment (Atema, 1977) and project to specialized sensory brain areas (Sandeman et al, 1992). Physiologically, the cephalic appendages of H. americanus are both chemoreceptive (Voigt and Atema, 1992) and mechanoreceptive (Miller-Sims and Atema, 2004). The first antenna, known as the antennule, is composed of a lateral and a medial flagellum standing on a set of basal segments.…”

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confidence: 99%

The olfactory pathway for individual recognition in the American lobsterHomarus americanus

Johnson

Atema

2005

Journal of Experimental Biology

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SUMMARY Individual recognition in the lobster Homarus americanus(Milne-Edwards), is based on detection of urine pheromones viachemoreceptors of the lateral antennular flagellum. The specific sensory pathway mediating this recognition is not known. Most of the chemoreceptor cells of this flagellum are found in the unimodal aesthetasc sensilla and project specifically to the glomeruli of the olfactory lobe in the brain. Additional chemoreceptor cells are located among mechanoreceptor cells in bimodal sensilla, including the guard hairs; they do not project to the olfactory lobe. This neuroanatomy suggested that aesthetascs were essential to all complex chemosensory tasks until it was shown that spiny lobsters Panulirus argus can still perform complex food odor discrimination and localization tasks without aesthetascs. Here, we demonstrate that the aesthetascs of H. americanus contain the chemoreceptors necessary for individual recognition of familiar opponents. In contrast to intact and guard hair-shaved animals, lobsters with aesthetascs removed did not recognize previous opponents as shown by second encounters statistically similar in length and aggression to first-encounter fights. Non-aesthetasc chemosensory pathways were incapable of rescuing opponent recognition. Subsequent lesion of all remaining chemoreceptor cells (by immersion in distilled water) abolished recognition and renewed fighting.

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Tuning of chemoreceptor cells of the second antenna of the American lobster (Homarus americanus) with a comparison of four of its other chemoreceptor organs

Cited by 42 publications

References 56 publications

Behavioral repertory of Trichodactylus panoplus (Crustacea: Trichodactylidae) under laboratory conditions

Behavioral repertory of Trichodactylus panoplus (Crustacea: Trichodactylidae) under laboratory conditions

Role of olfactory appendages in chemically mediated orientation of blue crabs

The olfactory pathway for individual recognition in the American lobsterHomarus americanus

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