Maintenance of dominance is mediated by urinary chemical signals in male European lobsters,<i>Homarus gammarus</i>

Skog, Malin; Chandrapavan, Arani; Hallberg, Eric; Breithaupt, Thomas

doi:10.1080/10236240902833729

Cited by 12 publications

(8 citation statements)

References 46 publications

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“…Our agonistic encounters resembled descriptions of agonistic encounters published in earlier studies of male H. americanus (Scrivener, 1971;Atema and Voigt, 1995;Huber and Kravitz, 1995) and male H. gammarus (Skog et al, 2009). The initial stage consisted of a threat display between individuals that then quickly engaged in physical claw contacts, which could increase in aggressiveness (e.g.…”

Section: Discussionmentioning

confidence: 54%

“…Two LED light strips (B0187LXUS2, colour temperature 4500 K) were placed 50 cm above the tank to ensure good visibility for video recording by the cameras. The experimental tank was divided into two equal volumes by a removable, opaque, Plexiglas divider (6 mm thick) installed in the middle of the tank prior to introducing the animals (Scrivener, 1971;Huber and Kravitz, 1995;Skog et al, 2009). To do this, plastic gutters were epoxy glued on the vertical sides and along the bottom of the tank.…”

Section: Experimental Set-upmentioning

confidence: 99%

“…Interestingly, earlier studies indicated that few buzzing sounds were produced during agonistic encounters in male H. americanus and it was then concluded that these sounds do not have a role for intraspecific interactions (Scrivener, 1971;Atema and Voigt, 1995;Atema and Cobb, 1980). Hence, no study has examined the ecological role of these buzzing sounds and only one has described the behavioural patterns in H. gammarus during agonistic encounters (Skog et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Acoustic behaviour of male European lobsters (Homarus gammarus) during agonistic encounters

Jézéquel

Coston‐Guarini

Chauvaud

et al. 2020

Journal of Experimental Biology

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Previous studies have demonstrated that male European lobsters (Homarus gammarus) use chemical and visual signals as a means of intraspecific communication during agonistic encounters. In this study, we show that they also produce buzzing sounds during these encounters. This result was missed in earlier studies because low-frequency buzzing sounds are highly attenuated in tanks, and are thus difficult to detect with hydrophones. To address this issue, we designed a behavioural tank experiment using hydrophones, with accelerometers placed on the lobsters to directly detect their carapace vibrations (i.e. the sources of the buzzing sounds). While we found that both dominant and submissive individuals produced carapace vibrations during every agonistic encounter, very few of the associated buzzing sounds (15%) were recorded by the hydrophones. This difference is explained by their high attenuation in tanks. We then used the method of algorithmic complexity to analyse the carapace vibration sequences as call-and-response signals between dominant and submissive individuals. Even though some intriguing patterns appeared for closely size-matched pairs (<5 mm carapace length difference), the results of the analysis did not permit us to infer that the processes underlying these sequences could be differentiated from random ones. Thus, such results prevented any conclusions about acoustic communication. This concurs with both the high attenuation of the buzzing sounds during the experiments and the poor understanding of acoustic perception by lobsters. New approaches that circumvent tank acoustic issues are now required to validate the existence of acoustic communication in lobsters.

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Section: Discussionmentioning

confidence: 54%

Section: Experimental Set-upmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Acoustic behaviour of male European lobsters (Homarus gammarus) during agonistic encounters

Jézéquel

Coston‐Guarini

Chauvaud

et al. 2020

Journal of Experimental Biology

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“…Buzzing sounds were also recorded just before 2 male lobsters attacked the hydrophone during feeding experiments. Lobsters are known to be territorial species living in burrows similar to those of mantis shrimp (Dingle & Caldwell 1969), and buzzing sounds might help to send signals of their presence to conspecifics in addition to chemical cues (Skog et al 2009), to maintain territory. This type of behaviour was previously described in mantis shrimp (Patek & Caldwell 2006).…”

Section: Is There a Role For Buzzing Sounds Emitted By The European Lmentioning

confidence: 99%

Sound characterization of the European lobster Homarus gammarus in tanks

Jézéquel¹,

Bonnel²,

Coston‐Guarini³

et al. 2018

Aquat. Biol.

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“…It is presumable that shadow reduced the intensity of within‐group communication via untransformed chemical cues and visual cues, which along with combinations of different senses may play a role in mediating recognition in crustacean hierarchies (Skog, Chandrapavan, Hallberg & Breithaupt ). Recently, the role of the olfactory and visual pathway in the behaviour of crayfish has been abundantly researched (Ameyaw‐Akumfi ; Copp & Watson ; Dunham & Oh ; Corotto, Bonenberger, Bounkeo & Dukas ; Schneider, Schneider & Moore ; Schneider, Huber & Moore ; Breithaupt & Eger ; Correia, Bandeira & Anastácio ).…”

Section: Introductionmentioning

confidence: 99%

Shadow area and partitioning influencing mortality, healthiness and growth of juvenile Red Swamp CrayfishProcambarus clarkii(Decapoda)

et al. 2011

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Crayfish show both shelter-seeking behaviour and agonistic behaviour. Agonistic interactions among crayfish combatants can be triggered and released by the access of shelter, which is a necessary resource for crayfish. The use of shadow as a shelter has not been thoroughly tested in experiments. In this study, we provided the Red Swamp Crayfish Procambarus clarkii (Girard) with different shadow area and shadow partition to test if shadow can act as a solid shelter. Eleven different treatments designed with different shadow area and partition, and 2640 juvenile crayfish were used. The survival rate increased with the increase of shadow area ratio. The shadow area contributed less to the body weight gain and the number of the survivals without injury. The growth variance of the juveniles under shadow conditions was significantly lower than those maintained without providing shadow. Under the recent experimental settings, generally, more partitioned shadow resulted in lower mortality. With 60% shadow area, more partitioned shadow led to higher body weight gain. The more the partition was provided, the fewer were the injury events, and the lower body weight variance observed. Our experiments indicated that both area and partition of the shadow influenced the growth of juvenile Red Swamp Crayfish.

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Maintenance of dominance is mediated by urinary chemical signals in male European lobsters,Homarus gammarus

Cited by 12 publications

References 46 publications

Acoustic behaviour of male European lobsters (Homarus gammarus) during agonistic encounters

Acoustic behaviour of male European lobsters (Homarus gammarus) during agonistic encounters

Sound characterization of the European lobster Homarus gammarus in tanks

Shadow area and partitioning influencing mortality, healthiness and growth of juvenile Red Swamp CrayfishProcambarus clarkii(Decapoda)

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