Comparative ultrastructure of the antennae and sensory hairs in six species of crayfish

PeerJ

article

Golara Kor¹  Kifayatullah Mengal¹  Miloš Buřič¹  Pavel Kozák¹  Hamid Niksirat¹ 

[1]Faculty of Fisheries and Protection of Waters, South Bohemian Research Centre of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in České Budějovice

关键词: Antenna;    Arthropods;    Biometry;    Electron microscopy;    Morphology;    Crustaceans;   

DOI  :  10.7717/peerj.15006

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Background Antennae in crayfish are essential for gaining information about the local topography and localising food, chemicals, conspecifics or predator. There are still gaps in the research on the morphology of antennae in decapods compared to other arthropods. Methodology Biometrical and ultrastructural methods were applied using light and cryo-scanning electron microscopies to study the morphology of antennae in six different crayfish species, including marbled crayfish Procambarus virginalis, Mexican dwarf crayfish Cambarellus patzcuarensis, red swamp crayfish Procambarus clarkii, signal crayfish Pacifastacus leniusculus, common yabby Cherax destructor, and spiny-cheek crayfish Faxonius limosus to find their potential morphological differences. Results Significant differences in the antenna length, length and width of each segment to carapace length ratios, and the number of segments were found in the six crayfish species. The ultrastructure revealed differences in the distribution of sensory hairs on the antenna and the morphology of the antennal surface. Conclusions The different morphology of antennae might reflect adaptation to the conditions of their specific habitats. In addition, results showed that a combination of differences in the morphological features and biometrical measurements of antennae could be used for the distinguishment of different studied crayfish species.

【 授权许可】

CC BY