Mytilus galloprovincialis is a major fouling organism in the inter-tidal zone.However,the interactions between M.galloprovincialis plantigrade settlement,biofilm characteristics,and surface wettability remains unknown...Mytilus galloprovincialis is a major fouling organism in the inter-tidal zone.However,the interactions between M.galloprovincialis plantigrade settlement,biofilm characteristics,and surface wettability remains unknown.Here,we examined M.galloprovincialis plantigrade settlement responses to marine biofilms(BFs)on surfaces of varying wettability.No significant difference in mussel settlement was observed on young BFs(7 d)on surfaces of differing wettability;while settlement decreased on older BFs(14,21,and 28 d)formed on low compared to high wettability surfaces.Surface wettability affected BF characteristics.The standardized harmonic mean and water contact angles values were not correlated with diatom density and chlorophyll a concentration,but were correlated with bacterial density,dry weight,and thickness.Denaturing gradient gel electrophoresis revealed that bacterial community structure differed on BFs on surfaces of varying wettability.Thus,surface wettability affects biofilm characteristics,and the subsequent changes in BF characteristics may be responsible for the variation in biofilm-inducing activity of M.galloprovincialis plantigrade settlement.展开更多
This study examines the locomotor biomechanics of the giant panda(Ailuropoda melanoleuca),a species of profound ecological and evolutionary significance.Despite its characteristic slow movement and non-sprinting locom...This study examines the locomotor biomechanics of the giant panda(Ailuropoda melanoleuca),a species of profound ecological and evolutionary significance.Despite its characteristic slow movement and non-sprinting locomotion,the panda has endured for over 8 million years,offering a unique perspective on the evolution of mammalian locomotion.Through comprehensive gait analysis and ground reaction force measurements,we investigate the functional distinctions between the forelimbs and hind limbs,highlighting the biomechanical underpinnings of its plantigrade locomotion.Our findings reveal how the panda’s limb structure and movement patterns contribute to energy efficiency,particularly during slow locomotion.By comparing these results with those of other large mammals,such as grizzly bears(Ursus arcto),we explore the role of limb mechanics in energy conservation.Additionally,we assess the locomotor performance of pandas across different age groups,shedding light on the maturation of locomotor abilities and the potential adaptive significance of their slow,deliberate movement.This research offers novel insights into the biomechanics of panda locomotion and its evolutionary implications,furthering our understanding of the functional evolution of bear species and informing conservation strategies for this iconic species.展开更多
基金supported by the National Natural Science Foundation ofChina(Grant No.41476131)the Innovation Program of Shanghai Municipal Education Commission(Grant No.14ZZ143)the Shanghai Universities Plateau Discipline Project of Marine Sciences and the Peak Discipline Program for Fisheries from the Shanghai Municipal Government
文摘Mytilus galloprovincialis is a major fouling organism in the inter-tidal zone.However,the interactions between M.galloprovincialis plantigrade settlement,biofilm characteristics,and surface wettability remains unknown.Here,we examined M.galloprovincialis plantigrade settlement responses to marine biofilms(BFs)on surfaces of varying wettability.No significant difference in mussel settlement was observed on young BFs(7 d)on surfaces of differing wettability;while settlement decreased on older BFs(14,21,and 28 d)formed on low compared to high wettability surfaces.Surface wettability affected BF characteristics.The standardized harmonic mean and water contact angles values were not correlated with diatom density and chlorophyll a concentration,but were correlated with bacterial density,dry weight,and thickness.Denaturing gradient gel electrophoresis revealed that bacterial community structure differed on BFs on surfaces of varying wettability.Thus,surface wettability affects biofilm characteristics,and the subsequent changes in BF characteristics may be responsible for the variation in biofilm-inducing activity of M.galloprovincialis plantigrade settlement.
基金supported by the National Natural Science Foundation of China(grant numbers 52405317 and 52075248)the Natural Science Foundation of Jiangsu Province(BK20241407)+3 种基金the Excellence Postdoctoral Project of Jiangsu Province(2024ZB421)the Fundamental Research Funds for the Central Universities(NP2024302)the National Key Laboratory of Aircraft Configuration Design(No.ZZKY-202507)the Jiangsu Key Laboratory of Advanced Robotics Technology(No.KJS2449).
文摘This study examines the locomotor biomechanics of the giant panda(Ailuropoda melanoleuca),a species of profound ecological and evolutionary significance.Despite its characteristic slow movement and non-sprinting locomotion,the panda has endured for over 8 million years,offering a unique perspective on the evolution of mammalian locomotion.Through comprehensive gait analysis and ground reaction force measurements,we investigate the functional distinctions between the forelimbs and hind limbs,highlighting the biomechanical underpinnings of its plantigrade locomotion.Our findings reveal how the panda’s limb structure and movement patterns contribute to energy efficiency,particularly during slow locomotion.By comparing these results with those of other large mammals,such as grizzly bears(Ursus arcto),we explore the role of limb mechanics in energy conservation.Additionally,we assess the locomotor performance of pandas across different age groups,shedding light on the maturation of locomotor abilities and the potential adaptive significance of their slow,deliberate movement.This research offers novel insights into the biomechanics of panda locomotion and its evolutionary implications,furthering our understanding of the functional evolution of bear species and informing conservation strategies for this iconic species.
