Journal of Comparative Physiology A最新文献_第3页

Evolutionarily conserved anatomical and physiological properties of olfactory pathway through fourth-order neurons in a species of grasshopper (Hieroglyphus banian). 一种蚱蜢通过四阶神经元的嗅觉通路的进化保守的解剖和生理特性。

Journal of Comparative Physiology A Pub Date : 2019-12-01 Epub Date: 2019-09-18 DOI: 10.1007/s00359-019-01369-7

Shilpi Singh, Joby Joseph

{"title":"Evolutionarily conserved anatomical and physiological properties of olfactory pathway through fourth-order neurons in a species of grasshopper (Hieroglyphus banian).","authors":"Shilpi Singh, Joby Joseph","doi":"10.1007/s00359-019-01369-7","DOIUrl":"10.1007/s00359-019-01369-7","url":null,"abstract":"Olfactory systems of different species show variations in structure and physiology despite some conserved features. We characterized the olfactory circuit of the grasshopper Hieroglyphus banian of family Acrididae (subfamily: Hemiacridinae) and compared it to a well-studied species of locust, Schistocerca americana (subfamily: Cyrtacanthacridinae), also belonging to family Acrididae. We used in vivo electrophysiological, immunohistochemical, and anatomical (bulk tract tracing) methods to elucidate the olfactory pathway from the second-order neurons in antennal lobe to the fourth-order neurons in β-lobe of H. banian. We observe conserved anatomical and physiological characteristics through the fourth-order neurons in the olfactory circuit of H. banian and S. americana, though they are evolutionarily divergent (~ 57 million years ago). However, we found one major difference between the two species-there are four antennal lobe tracts in H. banian, while only one is reported in S. americana. Besides, we have discovered a new class of bilateral neurons which respond weakly to olfactory stimuli, even though they innervate densely downstream of Kenyon cells.","PeriodicalId":15397,"journal":{"name":"Journal of Comparative Physiology A","volume":"57 1","pages":"813-838"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89318838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dietary L-tryptophan modulates agonistic behavior and brain serotonin in male dyadic contests of a cichlid fish. 膳食l -色氨酸调节雄性双体竞争鱼的激动行为和脑血清素。

Journal of Comparative Physiology A Pub Date : 2019-12-01 Epub Date: 2019-11-05 DOI: 10.1007/s00359-019-01373-x

L Morandini, M R Ramallo, M F Scaia, C Höcht, G M Somoza, M Pandolfi

{"title":"Dietary L-tryptophan modulates agonistic behavior and brain serotonin in male dyadic contests of a cichlid fish.","authors":"L Morandini, M R Ramallo, M F Scaia, C Höcht, G M Somoza, M Pandolfi","doi":"10.1007/s00359-019-01373-x","DOIUrl":"10.1007/s00359-019-01373-x","url":null,"abstract":"Although some studies have investigated the effects of dietary L-tryptophan on agonistic behavior, research on adult fish specimens is still lacking. Moreover, submissive behaviors have been generally overlooked. We focused on agonistic behavior between males of the cichlid fish Cichlasoma dimerus, in dyadic encounters held in a novel context after being fed or not with an L-tryptophan enriched diet (TRP) for 2 weeks. We arranged three different dyads: control/control (control conditions: not TRP enriched), control/TRP, and TRP/TRP. We also registered the response of the brain serotonergic system in four brain regions. TRP/TRP dyads showed higher latencies to first attack, lower overall aggression, and lower proportions of bites and passive copings (submissive display) compared to control/control. TRP dominant males performed fewer bites with respect to controls, and subordinate males opposed to TRP males showed fewer passive copings. Higher serotonergic activities were found in subordinates' optic tectum and in the telencephalon and preoptic area/hypothalamus of TRP males. Altogether, results point out that dietary L-tryptophan reduced males' motivation to attack and dominant aggression, which consequently influenced subordinate agonistic repertory. In addition, males within TRP/TRP dyads showed a switch in their behavioral agonistic repertory. These behavioral outcomes were probably due to modifications at brain serotonergic functioning.","PeriodicalId":15397,"journal":{"name":"Journal of Comparative Physiology A","volume":"15 1","pages":"867-880"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72760120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Differential antipredatory responses in the tuco-tuco (Ctenomys talarum) in relation to endogenous and exogenous changes in glucocorticoids 糖皮质激素内源性和外源性变化对土瓜(Ctenomys talarum)抗捕食反应的影响

Journal of Comparative Physiology A Pub Date : 2019-11-29 DOI: 10.1007/s00359-019-01384-8

V. Brachetta, C. Schleich, R. Zenuto

引用次数: 4

Acute neuroestrogen blockade attenuates song-induced immediate early gene expression in auditory regions of male and female zebra finches 急性神经雌激素阻断减弱了歌声诱导的雄性和雌性斑胸草雀听觉区即时早期基因表达

Journal of Comparative Physiology A Pub Date : 2019-11-28 DOI: 10.1007/s00359-019-01382-w

Amanda A. Krentzel, Maaya Z. Ikeda, Tessa J. Oliver, Era Koroveshi, L. Remage-Healey

引用次数: 14

The diversity of lobula plate tangential cells (LPTCs) in the Drosophila motion vision system 果蝇运动视觉系统中小叶板切向细胞的多样性

Journal of Comparative Physiology A Pub Date : 2019-11-11 DOI: 10.1007/s00359-019-01380-y

Huayi Wei, H. Kyung, P. Kim, C. Desplan

引用次数: 21

Brain structure differences between solitary and social wasp species are independent of body size allometry 独居黄蜂和群居黄蜂的脑结构差异与体型异速无关

Journal of Comparative Physiology A Pub Date : 2019-11-08 DOI: 10.1007/s00359-019-01374-w

S. O’Donnell, S. Bulova, Sara DeLeon, M. Barrett, Katherine Fiocca

引用次数: 9

Overexpression of isoform B of Dgp-1 gene enhances locomotor activity in senescent Drosophila males and under heat stress Dgp-1基因B型异构体的过度表达增强了衰老雄性果蝇和热应激下的运动活性

Journal of Comparative Physiology A Pub Date : 2019-11-05 DOI: 10.1007/s00359-019-01378-6

S. A. Fedotov, Natalia G. Besedina, J. Bragina, L. V. Danilenkova, E. A. Kamysheva, N. Kamyshev

引用次数: 0

The use of evoked potentials to determine sensory sub-modality contributions to acoustic and hydrodynamic sensing 使用诱发电位来确定对声学和流体动力传感的感觉亚模态的贡献

Journal of Comparative Physiology A Pub Date : 2019-11-04 DOI: 10.1007/s00359-019-01371-z

Christine S Kibele, J. Montgomery, C. Radford

引用次数: 2

Not just going with the flow: foraging ants attend to polarised light even while on the pheromone trail. 不只是随波逐流：觅食的蚂蚁即使在信息素的踪迹上也会注意偏振光。

Journal of Comparative Physiology A Pub Date : 2019-10-01 Epub Date: 2019-08-17 DOI: 10.1007/s00359-019-01363-z

Cody A Freas, Nicola J R Plowes, Marcia L Spetch

{"title":"Not just going with the flow: foraging ants attend to polarised light even while on the pheromone trail.","authors":"Cody A Freas, Nicola J R Plowes, Marcia L Spetch","doi":"10.1007/s00359-019-01363-z","DOIUrl":"10.1007/s00359-019-01363-z","url":null,"abstract":"The polarisation pattern of skylight serves as an orientation cue for many invertebrates. Solitary foraging ants, in particular, rely on polarised light to orient along with a number of other visual cues. Yet it is unknown, if this cue is actively used in socially foraging species that use pheromone trails to navigate. Here, we explore the use of polarised light in the presence of the pheromone cues of the foraging trail. The desert harvester ant, Veromessor pergandei, relies on pheromone cues and path integration in separate stages of their foraging ecology (column and fan, respectively). Here, we show that foragers actively orient to an altered overhead polarisation pattern, both while navigating individually in the fan and while on the pheromone-based column. These heading changes occurred during twilight, as well as in the early morning and late afternoon before sunset. Differences in shift size indicate that foragers attend to both the polarisation pattern and the sun's position when available, yet during twilight, headings are dominated by the polarisation pattern. Finally, when the sun's position was experimentally blocked before sunset, shift sizes increased similar to twilight testing. These findings show that celestial cues provide directional information on the pheromone trail.","PeriodicalId":15397,"journal":{"name":"Journal of Comparative Physiology A","volume":"65 1","pages":"755-767"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78172925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Temporal processing properties of auditory DUM neurons in a bush-cricket. 灌木蟋蟀听觉DUM神经元的时间加工特性。

Journal of Comparative Physiology A Pub Date : 2019-10-01 Epub Date: 2019-07-20 DOI: 10.1007/s00359-019-01359-9

Andreas Stumpner, Paule Chloé Lefebvre, Marvin Seifert, Tim Daniel Ostrowski

{"title":"Temporal processing properties of auditory DUM neurons in a bush-cricket.","authors":"Andreas Stumpner, Paule Chloé Lefebvre, Marvin Seifert, Tim Daniel Ostrowski","doi":"10.1007/s00359-019-01359-9","DOIUrl":"10.1007/s00359-019-01359-9","url":null,"abstract":"Insects with ears process sounds and respond to conspecific signals or predator cues. Axons of auditory sensory cells terminate in mechanosensory neuropils from which auditory interneurons project into (brain-) areas to prepare response behaviors. In the prothoracic ganglion of a bush-cricket, a cluster of local DUM (dorsal unpaired median) neurons has recently been described and constitutes a filter bank for carrier frequency. Here, we demonstrate that these neurons also constitute a filter bank for temporal patterns. The majority of DUM neurons showed pronounced phasic-tonic responses. The transitions from phasic to tonic activation had different time constants in different DUM neurons. Time constants of the membrane potential were shorter in most DUM neurons than in auditory sensory neurons. Patterned stimuli with known behavioral relevance evoked a broad range of responses in DUM neurons: low-pass, band-pass, and high-pass characteristics were encountered. Temporal and carrier frequency processing were not correlated. Those DUM neurons producing action potentials showed divergent processing of temporal patterns when the graded potential or the spiking was analyzed separately. The extent of membrane potential fluctuations mimicking the patterned stimuli was different between otherwise similarly responding neurons. Different kinds of inhibition were apparent and their relevance for temporal processing is discussed.","PeriodicalId":15397,"journal":{"name":"Journal of Comparative Physiology A","volume":"16 1","pages":"717-733"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73128863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0