دورية أكاديمية
Neuronal Regression of Internal Leg Vibroreceptor Organs in a Cave-Dwelling Insect (Orthoptera: Rhaphidophoridae: Dolichopoda araneiformis).
| العنوان: | Neuronal Regression of Internal Leg Vibroreceptor Organs in a Cave-Dwelling Insect (Orthoptera: Rhaphidophoridae: Dolichopoda araneiformis). |
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| المؤلفون: | Strauß J; Institute for Animal Physiology, AG Integrative Sensory Physiology, Justus-Liebig-Universität Giessen, Giessen, Germany., Stritih N |
| المصدر: | Brain, behavior and evolution [Brain Behav Evol] 2017; Vol. 89 (2), pp. 104-116. Date of Electronic Publication: 2017 Apr 14. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Karger Country of Publication: Switzerland NLM ID: 0151620 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1421-9743 (Electronic) Linking ISSN: 00068977 NLM ISO Abbreviation: Brain Behav Evol Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Basel, New York, Karger. |
| مواضيع طبية MeSH: | Biological Evolution* , Vibration*, Insecta/*anatomy & histology , Lower Extremity/*innervation , Sense Organs/*cytology , Sensory Receptor Cells/*physiology, Afferent Pathways/anatomy & histology ; Animals ; Lower Extremity/anatomy & histology ; Species Specificity |
| مستخلص: | Animals' adaptations to cave habitats generally include elaboration of extraoptic senses, and in insects the receptor structures located on the legs are supposed to become more prominent in response to constant darkness. The receptors for detecting substrate vibrations are often highly sensitive scolopidial sensilla localized within the legs or the body. For troglobitic insects the evolutionary changes in vibroreceptor organs have not been studied. Since rock is an extremely unfavorable medium for vibration transmission, selection on vibration receptors may be weakened in caves, and these sensory organs may undergo regressive evolution. We investigated the anatomy of the most elaborate internal vibration detection system in orthopteroid insects, the scolopidial subgenual organ complex in the cave cricket Dolichopoda araneiformis (Orthoptera: Ensifera: Rhaphidophoridae). This is a suitable model species which shows high levels of adaptation to cave life in terms of both phenotypic and life cycle characteristics. We compared our data with data on the anatomy and physiology of the subgenual organ complex from the related troglophilic species Troglophilus neglectus. In D. araneiformis, the subgenual organ complex contains three scolopidial organs: the subgenual organ, the intermediate organ, and the accessory organ. The presence of individual organs and their innervation pattern are identical to those found in T. neglectus, while the subgenual organ and the accessory organ of D. araneiformis contain about 50% fewer scolopidial sensilla than in T. neglectus. This suggests neuronal regression of these organs in D. araneiformis, which may reflect a relaxed selection pressure for vibration detection in caves. At the same time, a high level of overall neuroanatomical conservation of the intermediate organ in this species suggests persistence of the selection pressure maintaining this particular organ. While regressive evolution of chordotonal organs has been documented for insect auditory organs, this study shows for the first time that internal vibroreceptors can also be affected. (© 2017 S. Karger AG, Basel.) |
| فهرسة مساهمة: | Keywords: Cave cricket; Chordotonal organ; Insect; Mechanoreceptor; Neuroanatomy; Neuronal innervation; Sensory evolution; Troglobite; Troglomorphism |
| تواريخ الأحداث: | Date Created: 20170414 Date Completed: 20180226 Latest Revision: 20180226 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1159/000462957 |
| PMID: | 28407636 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1421-9743 |
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| DOI: | 10.1159/000462957 |