探索河床:嗅觉器官形态如何塑造淡水黄貂鱼(Potamotrygoninae)的生活习性

IF 1.1 4区 生物学 Q4 ANATOMY & MORPHOLOGY Zoomorphology Pub Date : 2024-09-10 DOI:10.1007/s00435-024-00682-3
Akemi Shibuya, Rubia Neris Machado, Wallice P. Duncan
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摘要

在觅食活动中,双齿类动物的嗅觉对于初步探测猎物产生的化学刺激具有重要作用。本研究将四种钾鲤科鱼类的嗅丛形态与栖息地利用和摄食习性联系起来。研究利用保存的嗅莲座对嗅觉结构进行了形态学和组织学描述。Paratrygon sp.的嗅觉器官结构较为简单,这并不表明它在摄食行为的初始阶段发挥着主要的感官作用。Potamotrygon wallacei的初级片层表面积最大,这表明其嗅觉灵敏度增强,这与其通吃习性和复杂的底质探索有关。虽然大体形态相似,但组织学分析表明,不同物种的感觉区和非感觉区的上皮细胞组成存在差异,次生皱褶的形状和粘液细胞的分布也各不相同。Paratrygon sp.和 Potamotrygon orbignyi 的次级褶皱都很简单,这可能与它们专门的摄食习性有关,需要较少的适应性来检测不同类型的化学刺激。这些发现深入揭示了黄貂鱼嗅觉器官的功能形态及其生态学意义,证明了复杂的感官适应对在不同淡水生境中成功觅食至关重要。此外,要了解魟类的觅食行为,还需要考虑所有感官系统的贡献。然而,由于嗅觉器官的形态特征存在差异,尤其是在广泛分布的物种中,因此在归纳杓鹬物种嗅觉器官的形态特征时需要谨慎。
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Exploring the riverbed: How olfactory organ morphology shapes the life habits of freshwater stingrays (Potamotrygoninae)

The olfaction in batoids have an important role for initial detection of the chemical stimulus produced by prey during the foraging activities. The present study relates the morphology of olfactory rosettes to the habitat use and feeding habits in four potamotrygonin species. The morphological and histological descriptions of the olfactory structures are provided, using preserved olfactory rosettes. A simpler structure of olfactory organs in Paratrygon sp. does not indicate a primary sensory role during the initial phase of its feeding behavior. In Potamotrygon wallacei, the largest surface area of primary lamellae suggests enhanced olfactory sensitivity related to its generalist feeding habits and complex substrate exploration. Although the gross morphology is similar, histological analyses revealed that the sensory and non-sensory regions present differences in epithelial cell composition among species, with variations in the secondary folds shape and the distribution of mucus cells. The simplicity of secondary folds in both Paratrygon sp. and Potamotrygon orbignyi probably is related to their specialized feeding habits, requiring fewer adaptations to detect different types of chemical stimuli. These findings provide insights into the functional morphology of olfactory organs in potamotrygonin stingrays and their ecological implications, evidencing the intricate sensory adaptations crucial for foraging success in diverse freshwater habitats. Additionally, it becomes necessary to take into account the contribution of all sensory systems to understand their foraging behavior. Nonetheless, the generalization of the morphological characteristics of olfactory organ in a potamotrygonin species requires caution, since morphological variations can be found, especially to widespread species.

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来源期刊
Zoomorphology
Zoomorphology 生物-动物学
CiteScore
2.20
自引率
10.00%
发文量
31
审稿时长
>12 weeks
期刊介绍: The journal publishes original research papers, reviews and method papers. While reviews should be designed as comparative surveys, summarizing the current knowledge from an evolutionary perspective, method papers should present new approaches or reviews on methods used in animal morphology. The research papers should be based on morphological investigation of invertebrates and vertebrates at the macroscopic, microscopic and ultrastructural level, including embryological studies.
期刊最新文献
Anatomy, 3D micro-CT and semiquantitative elemental microanalysis in common carp vertebrae (Cyprinus carpio; Linnaeus, 1758) Full body sensillar diversity of pumpkin fruit fly, Bactrocera tau (Walker) (Diptera: Tephritidae) Exploring the riverbed: How olfactory organ morphology shapes the life habits of freshwater stingrays (Potamotrygoninae) Distribution and morphometric studies on antennal sensilla of female and male Pediobius imbreus (Hymenoptera: Eulophidae) Ultramorphology of the third instar larvae of Miridiba trichophora (Coleoptera: Melolonthinae: Rhizotrogini)
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