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Yamanaka A, Kobayashi S, Matsuo Y, Matsuo R. FxRIamide regulates the oscillatory activity in the olfactory center of the terrestrial slug Limax. Peptides 2021; 141:170541. [PMID: 33775802 DOI: 10.1016/j.peptides.2021.170541] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 03/13/2021] [Accepted: 03/20/2021] [Indexed: 11/17/2022]
Abstract
The terrestrial slug Limax acquires odor-aversion memory. The procerebrum is the secondary olfactory center in the brain of Limax, and functions as the locus of the memory formation and storage. The change in the local field potential oscillation in the procerebrum reflects the information processing of the learned odor. However, it is not fully understood what factors, intrinsic or extrinsic in the procerebrum, alter the oscillatory activity and how it is regulated. In the present study, we found that FxRIamide (Phe-x-Arg-Ile-NH2), which was previously identified as a myomodulatory peptide in the gastropod Fusinus ferrugineus, downregulates the oscillatory frequency of the local field potential oscillation in the procerebrum of Limax. FxRIamide peptides were encoded by two distinct transcripts, which exhibit partially overlapping expression patterns in the brain. Immunohistochemical staining revealed a scattered distribution of FxRIamide-expressing neurons in the cell mass layer of the procerebrum, in addition to the ramified innervation of FxRIamidergic neurons in the neuropile layers. Down-regulation of the oscillatory frequency of the local field potential was explained by the inhibitory effects of FxRIamide on the bursting neurons, which are the kernels of the local field potential oscillation in the procerebrum. Our study revealed the previously unidentified role of FxRIamide peptides in the network of interneurons of Limax, and these peptides may play a role in the mnemonic functions of the procerebrum.
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Affiliation(s)
- Amami Yamanaka
- International College of Arts and Sciences, Fukuoka Women's University, 1-1-1 Kasumigaoka, Higashi-ku, Fukuoka, 813-8529, Japan
| | - Suguru Kobayashi
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa, 769-2193, Japan
| | - Yuko Matsuo
- International College of Arts and Sciences, Fukuoka Women's University, 1-1-1 Kasumigaoka, Higashi-ku, Fukuoka, 813-8529, Japan
| | - Ryota Matsuo
- International College of Arts and Sciences, Fukuoka Women's University, 1-1-1 Kasumigaoka, Higashi-ku, Fukuoka, 813-8529, Japan.
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Distribution and physiological effect of enterin neuropeptides in the olfactory centers of the terrestrial slug Limax. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2020; 206:401-418. [DOI: 10.1007/s00359-020-01400-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 01/04/2020] [Accepted: 01/10/2020] [Indexed: 10/25/2022]
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Scaros AT, Andouche A, Baratte S, Croll RP. Histamine and histidine decarboxylase in the olfactory system and brain of the common cuttlefish Sepia officinalis (Linnaeus, 1758). J Comp Neurol 2019; 528:1095-1112. [PMID: 31721188 DOI: 10.1002/cne.24809] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 10/30/2019] [Accepted: 10/30/2019] [Indexed: 02/05/2023]
Abstract
Cephalopods are radically different from any other invertebrate. Their molluscan heritage, innovative nervous system, and specialized behaviors create a unique blend of characteristics that are sometimes reminiscent of vertebrate features. For example, despite differences in the organization and development of their nervous systems, both vertebrates and cephalopods use many of the same neurotransmitters. One neurotransmitter, histamine (HA), has been well studied in both vertebrates and invertebrates, including molluscs. While HA was previously suggested to be present in the cephalopod central nervous system (CNS), Scaros, Croll, and Baratte only recently described the localization of HA in the olfactory system of the cuttlefish Sepia officinalis. Here, we describe the location of HA using an anti-HA antibody and a probe for histidine decarboxylase (HDC), a synthetic enzyme for HA. We extended previous descriptions of HA in the olfactory organ, nerve, and lobe, and describe HDC staining in the same regions. We found HDC-positive cell populations throughout the CNS, including the optic gland and the peduncle, optic, dorso-lateral, basal, subvertical, frontal, magnocellular, and buccal lobes. The distribution of HA in the olfactory system of S. officinalis is similar to the presence of HA in the chemosensory organs of gastropods but is different than the sensory systems in vertebrates or arthropods. However, HA's widespread abundance throughout the rest of the CNS of Sepia is a similarity shared with gastropods, vertebrates, and arthropods. Its widespread use with differing functions across Animalia provokes questions regarding the evolutionary history and adaptability of HA as a transmitter.
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Affiliation(s)
- Alexia T Scaros
- Department of Physiology and Biophysics, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Aude Andouche
- Laboratoire de Biologie des Organismes et Ecosystemes Aquatiques (BOREA), MNHN, CNRS, SU, UCN, UA, Paris, France
| | - Sébastien Baratte
- Laboratoire de Biologie des Organismes et Ecosystemes Aquatiques (BOREA), MNHN, CNRS, SU, UCN, UA, Paris, France
| | - Roger P Croll
- Department of Physiology and Biophysics, Dalhousie University, Halifax, Nova Scotia, Canada
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Kodirov SA, Psyrakis D, Brachmann J, Zhuravlev VL. Limulus and heart rhythm. JOURNAL OF EXPERIMENTAL ZOOLOGY PART 2018; 331:61-79. [PMID: 30251467 DOI: 10.1002/jez.2235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 08/24/2018] [Accepted: 08/28/2018] [Indexed: 01/08/2023]
Abstract
Great interest in the comparative physiology of hearts and their functions in Animalia has emerged with classic papers on Limulus polyphemus and mollusks. The recurrent cardiac activity-heart rate-is the most important physiological parameter and when present the kardia (Greek) is vital to the development of entire organs of the organisms in the animal kingdom. Extensive studies devoted to the regulation of cardiac rhythm in invertebrates have revealed that the basics of heart physiology are comparable to mammals. The hearts of invertebrates also beat spontaneously and are supplied with regulatory nerves: either excitatory or inhibitory or both. The distinct nerves and the source of excitation/inhibition at the level of single neurons are described for many invertebrate genera. The vertebrates and a majority of invertebrates have myogenic hearts, whereas the horseshoe crab L. polyphemus and a few other animals have a neurogenic cardiac rhythm. Nevertheless, the myogenic nature of heartbeat is precursor, because the contraction of native and stem-cell-derived cardiomyocytes does occur in the absence of any neural elements. Even in L. polyphemus, the heart rhythm is myogenic at embryonic stages.
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Affiliation(s)
- Sodikdjon A Kodirov
- Department of General Physiology, Saint Petersburg University, Saint Petersburg, Russia.,Department of Neurobiology, Neuroscience Institute, Morehouse School of Medicine, Atlanta, Georgia.,Department of Molecular Biology and Genetics, Almazov Federal Heart, Blood and Endocrinology Centre, Saint Petersburg, Russia.,Laboratory of Emotions' Neurobiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland.,Department of Cardiology, University Hospital, Heidelberg, Germany
| | - Dimitrios Psyrakis
- Department of Cardiology and Angiology I, Heart Center Freiburg University, Freiburg, Germany
| | - Johannes Brachmann
- Department of Cardiology, Klinikum Coburg, Teaching Hospital of the University of Würzburg, Coburg, Germany.,Department of Cardiology, University Hospital, Heidelberg, Germany
| | - Vladimir L Zhuravlev
- Department of General Physiology, Saint Petersburg University, Saint Petersburg, Russia.,Department of Cardiology, University Hospital, Heidelberg, Germany
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Matsuo Y, Yamanaka A, Matsuo R. RFamidergic neurons in the olfactory centers of the terrestrial slug Limax. ZOOLOGICAL LETTERS 2018; 4:22. [PMID: 30116553 PMCID: PMC6085721 DOI: 10.1186/s40851-018-0108-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 07/31/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND The terrestrial slug Limax has long been used as a model for the study of olfactory information processing and odor learning. Olfactory inputs from the olfactory epithelium are processed in the tentacular ganglion and then in the procerebrum. Glutamate and acetylcholine are the major neurotransmitters used in the procerebrum. Phe-Met-Arg-Phe-NH2 (FMRFamide) has been shown to be involved in the regulation of the network activity of the procerebrum. Although there are thought to be various RFamide family peptides other than FMRFamide that are potentially recognized by anti-FMRFamide antibody in the central nervous system of mollusks, identifying the entire repertoire of RFamide peptides in Limax has yet to be achieved. METHODS In the present study, we made a comprehensive search for RFamide peptide-encoding genes from the transcriptome data of Limax, and identified 12 genes. The expression maps of these RFamide genes were constructed by in situ hybridization in the cerebral ganglia including the procerebrum, and in the superior/inferior tentacles. RESULTS Ten of 12 genes were expressed in the procerebrum, and nine of 12 genes were expressed in the tentacular ganglia. Gly-Ser-Leu-Phe-Arg-Phe-NH2 (GSLFRFamide), which is encoded by two different genes, LFRFamide1 (Leu-Phe-Arg-Phe-NH2-1) and LFRFamide2 (Leu-Phe-Arg-Phe-NH2-2), decreased the oscillatory frequency of the local field potential oscillation in the procerebrum when exogenously applied in vitro. We also found by immunohistochemistry that the neurons expressing pedal peptide send efferent projections from the procerebrum back to the tentacular ganglion. CONCLUSION Our findings suggest the involvement of a far wider variety of RFamide family peptides in the olfactory information processing in Limax than previously thought.
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Affiliation(s)
- Yuko Matsuo
- Laboratory of Neurobiology, International College of Arts and Sciences, Fukuoka Women’s University, 1-1-1 Kasumigaoka, Higashi-ku, Fukuoka, 813-8529 Japan
| | - Amami Yamanaka
- Laboratory of Neurobiology, International College of Arts and Sciences, Fukuoka Women’s University, 1-1-1 Kasumigaoka, Higashi-ku, Fukuoka, 813-8529 Japan
| | - Ryota Matsuo
- Laboratory of Neurobiology, International College of Arts and Sciences, Fukuoka Women’s University, 1-1-1 Kasumigaoka, Higashi-ku, Fukuoka, 813-8529 Japan
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Matsuo R, Takatori Y, Hamada S, Koyanagi M, Matsuo Y. Expression and light-dependent translocation of β-arrestin in the visual system of the terrestrial slug Limax valentianus. ACTA ACUST UNITED AC 2017; 220:3301-3314. [PMID: 28687596 DOI: 10.1242/jeb.162701] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 07/05/2017] [Indexed: 11/20/2022]
Abstract
Vertebrates, cephalopods and arthropods are equipped with eyes that have the highest spatiotemporal resolution among the animal phyla. In parallel, only animals in these three phyla have visual arrestin specialized for the termination of visual signaling triggered by opsin, in addition to ubiquitously expressed β-arrestin that serves in terminating general G protein-coupled receptor signaling. Indeed, visual arrestin in Drosophila and rodents translocates to the opsin-rich subcellular region in response to light to reduce the overall sensitivity of photoreceptors in an illuminated environment (i.e. light adaptation). We thus hypothesized that, during evolution, visual arrestin has taken over the role of β-arrestin in those animals with eyes of high spatiotemporal resolution. If this is true, it is expected that β-arrestin plays a role similar to visual arrestin in those animals with low-resolution eyes. In the present study, we focused on the terrestrial mollusk Limax valentianus, a species related to cephalopods but that has only β-arrestin, and generated antibodies against β-arrestin. We found that β-arrestin is highly expressed in photosensory neurons, and translocates into the microvilli of the rhabdomere within 30 min in response to short wavelength light (400 nm), to which the Limax eye exhibits a robust response. These observations suggest that β-arrestin functions in the visual system of those animals that do not have visual arrestin. We also exploited anti-β-arrestin antibody to visualize the optic nerve projecting to the brain, and demonstrated its usefulness for tracing a visual ascending pathway.
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Affiliation(s)
- Ryota Matsuo
- Department of Environmental Sciences, International College of Arts and Sciences, Fukuoka Women's University, Fukuoka 813-8529, Japan
| | - Yuka Takatori
- Department of Environmental Sciences, International College of Arts and Sciences, Fukuoka Women's University, Fukuoka 813-8529, Japan
| | - Shun Hamada
- Department of Nutrition and Health Sciences, International College of Arts and Sciences, Fukuoka Women's University, Fukuoka 813-8529, Japan
| | - Mitsumasa Koyanagi
- Department of Biology and Geosciences, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
| | - Yuko Matsuo
- Department of Environmental Sciences, International College of Arts and Sciences, Fukuoka Women's University, Fukuoka 813-8529, Japan
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Serfőző Z, Nacsa K, Veréb Z, Battonyai I, Hegedűs C, Balogh C, Elekes K. Nitric oxide-coupled signaling in odor elicited molecular events in the olfactory center of the terrestrial snail, Helix pomatia. Cell Signal 2016; 30:67-81. [PMID: 27884734 DOI: 10.1016/j.cellsig.2016.11.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 11/15/2016] [Accepted: 11/18/2016] [Indexed: 12/22/2022]
Abstract
Olfaction, a chemosensory modality, plays a pivotal role in the orientation and behavior of invertebrates. The central olfactory processing unit in terrestrial stylomatophoran snails is the procerebrum, which contains NO synthesizing interneurons, whose oscillatory currents are believed to be the base of odor evoked memory formation. Nevertheless, in this model the up- and downstream events of molecular cascades that trigger and follow NO release, respectively, have not been studied. Immunocytochemistry and flow cytometry studies performed on procerebral neural perikarya isolated from the snail Helix pomatia revealed cell populations with discrete DAF-2 fluorescence, indicating the release of different amounts of NO. Glutamate increased the intensity of DAF-2 fluorescence, and the number of DAF-2 positive non-bursting interneurons, through a mechanism likely to involve an NMDA-like receptor. Similarly to glutamate, NO activation induced an increase in intracellular cGMP levels through activation of soluble guanylyl cyclase. Immunohistochemical localization of proteins possessing the phosphorylated target sequence of AGC family kinases (RXXS/T-P), among them protein kinase A (RRXS/T-P), showed striking similarities to the distribution of NOS/cGMP. Activators of cyclic nucleotide synthesis increased the AGC-kinase-dependent phosphorylation of discrete proteins with 28, 45, and 55kDamw. Importantly, exposure of snails to an attractive odorant induced hyperphosphorylation of the 28kDa protein, and increased levels of cGMP synthesis. Protein S-nitrosylation and intercellular activation of protein kinase G were also suggested as alternative components of NO signaling in the snail procerebrum. The present results from Helix pomatia indicate an important role for procerebrum NO/cGMP/PKA signaling pathways in the regulation of olfactory (food-finding) behavior.
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Affiliation(s)
- Zoltán Serfőző
- MTA Centre for Ecological Research, Balaton Limnological Institute, Tihany, Hungary.
| | - Kálmán Nacsa
- MTA Centre for Ecological Research, Balaton Limnological Institute, Tihany, Hungary
| | - Zoltán Veréb
- Institute of Biochemistry and Molecular Biology, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary
| | - Izabella Battonyai
- MTA Centre for Ecological Research, Balaton Limnological Institute, Tihany, Hungary
| | - Csaba Hegedűs
- Institute of Medical Chemistry, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary
| | - Csilla Balogh
- MTA Centre for Ecological Research, Balaton Limnological Institute, Tihany, Hungary
| | - Károly Elekes
- MTA Centre for Ecological Research, Balaton Limnological Institute, Tihany, Hungary
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Matsuo R, Tanaka M, Fukata R, Kobayashi S, Aonuma H, Matsuo Y. Octopaminergic system in the central nervous system of the terrestrial slugLimax. J Comp Neurol 2016; 524:3849-3864. [DOI: 10.1002/cne.24039] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 04/26/2016] [Accepted: 05/16/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Ryota Matsuo
- International College of Arts and Sciences; Fukuoka Women's University; Higashi-ku Fukuoka 813-8529 Japan
| | - Marin Tanaka
- International College of Arts and Sciences; Fukuoka Women's University; Higashi-ku Fukuoka 813-8529 Japan
| | - Rena Fukata
- International College of Arts and Sciences; Fukuoka Women's University; Higashi-ku Fukuoka 813-8529 Japan
| | - Suguru Kobayashi
- Kagawa School of Pharmaceutical Sciences; Tokushima Bunri University; Sanuki Kagawa 769-2193 Japan
| | - Hitoshi Aonuma
- Research Center of Mathematics for Social Creativity, Research Institute of Electronic Science; Hokkaido University; Sapporo Hokkaido 060-0812 Japan
- Japan Science and Technology Agency; CREST; Kawaguchi Saitama 332-0012 Japan
| | - Yuko Matsuo
- International College of Arts and Sciences; Fukuoka Women's University; Higashi-ku Fukuoka 813-8529 Japan
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Kodirov SA, Wehrmeister M, Colom L. Nicotine-Mediated ADP to Spike Transition: Double Spiking in Septal Neurons. J Membr Biol 2015; 249:107-18. [PMID: 26463358 DOI: 10.1007/s00232-015-9853-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Accepted: 09/29/2015] [Indexed: 11/25/2022]
Abstract
The majority of neurons in lateral septum (LS) are electrically silent at resting membrane potential. Nicotine transiently excites a subset of neurons and occasionally leads to long lasting bursting activity upon longer applications. We have observed simultaneous changes in frequencies and amplitudes of spontaneous action potentials (AP) in the presence of nicotine. During the prolonged exposure, nicotine increased numbers of spikes within a burst. One of the hallmarks of nicotine effects was the occurrences of double spikes (known also as bursting). Alignment of 51 spontaneous spikes, triggered upon continuous application of nicotine, revealed that the slope of after-depolarizing potential gradually increased (1.4 vs. 3 mV/ms) and neuron fired the second AP, termed as double spiking. A transition from a single AP to double spikes increased the amplitude of after-hyperpolarizing potential. The amplitude of the second (premature) AP was smaller compared to the first one, and this correlation persisted in regard to their duration (half-width). A similar bursting activity in the presence of nicotine, to our knowledge, has not been reported previously in the septal structure in general and in LS in particular.
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Affiliation(s)
- Sodikdjon A Kodirov
- Department of Biological Sciences, Center for Biomedical Studies, University of Texas at Brownsville, Brownsville, TX, 78520, USA.
- Neuroscience Institute, Morehouse School of Medicine, 720 Westview Drive SW, Atlanta, GA, 30310, USA.
| | - Michael Wehrmeister
- Johannes Gutenberg University, 55099, Mainz, Germany
- Heidelberg University, Heidelberg, Germany
| | - Luis Colom
- Department of Biological Sciences, Center for Biomedical Studies, University of Texas at Brownsville, Brownsville, TX, 78520, USA
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Matsuo R, Fukata R, Kumagai M, Kobayashi A, Kobayashi S, Matsuo Y. Distribution of histaminergic neurons and their modulatory effects on oscillatory activity in the olfactory center of the terrestrial slug Limax. J Comp Neurol 2015; 524:119-35. [DOI: 10.1002/cne.23829] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 06/04/2015] [Accepted: 06/08/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Ryota Matsuo
- International College of Arts and Sciences; Fukuoka Women's University; Higashi-ku Fukuoka 813-8529 Japan
| | - Rena Fukata
- International College of Arts and Sciences; Fukuoka Women's University; Higashi-ku Fukuoka 813-8529 Japan
| | - Moeko Kumagai
- International College of Arts and Sciences; Fukuoka Women's University; Higashi-ku Fukuoka 813-8529 Japan
| | - Asuka Kobayashi
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University; Sanuki Kagawa 769-2193 Japan
| | - Suguru Kobayashi
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University; Sanuki Kagawa 769-2193 Japan
| | - Yuko Matsuo
- International College of Arts and Sciences; Fukuoka Women's University; Higashi-ku Fukuoka 813-8529 Japan
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Matsuo Y, Uozumi N, Matsuo R. Photo-tropotaxis based on projection through the cerebral commissure in the terrestrial slug Limax. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2014; 200:1023-32. [DOI: 10.1007/s00359-014-0954-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 10/06/2014] [Accepted: 10/07/2014] [Indexed: 10/24/2022]
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