Niche differentiation among facultative filter feeders: Insights from invasive Ponto-Caspian mysids

作     者：Péter Borza Varsha Rani Csaba F.Vada 

作者机构：Institute of Aquatic EcologyCentre for Ecological ResearchKarolina ut 29.1113 BudapestHungary Doctoral School of BiologyInstitute of BiologyEotvos Lorand UniversityPazmany Péter sétany 1/C1117 BudapestHungary 

出 版 物：《Current Zoology》 (动物学报（英文版）)

年 卷 期：2024年第70卷第4期

页      面：513-521页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 071002[理学-动物学] 

基　　金：The authors thank Peter Dobosy,Adam Egri,Bence Gergacz,Eszter Laczkovszki,Sarah Lecoq,Nicolas Malinge,and Karoly Palffy for their assistance in various phases of the research.Project no.132605 has been implemented with the support provided from the National Research Development and Innovation Fund of Hungary,financed under the FK_19 funding scheme.VR acknowledges further support by the NKFIH-138215project 

主　　题：clearance rate coexistence filter area filtermesh size. 

摘      要：The degree of dietary specialization has a fundamental impact on the ecological function and interactions of suspension *** niche differentiation by food particle size is common among obligate suspension feeders,its role is not evident in facultative *** this study,we aimed at providing new insights on the matter by focusing on sympatric mysid *** mysids use different mechanisms for raptorial and filter-feeding,they represent a more adequate model system than for example,the more extensively studied *** made morpholog-ical measurements on the 4 coexisting invasive Ponto-Caspian mysid species to determine the areas and mesh sizes of their *** also quantified their clearance rates on the microalga Cryptomonas *** a laboratory experiment to reveal how morphological differences manifest in their overall filtering *** found relatively small but consistent differences in the primary filter area among the species,indicating that morphological constraints due to the enclosed position of the setae might limit the possibility for *** primary filter mesh sizes were small in all 4 species(0.69-2.73μm)with moderate but consistent intraspecific differences,suggesting that the benefit of being able to capture small particles might outweigh the pressure for *** observed clearance rates were in accordance with the morphological characteristics of the species,highlighting that auxiliary filters(present in one of the species,Limnomysis benedeni)are needed to increase filtering capacity *** study confirmed that food particle size can contribute to the niche differentiation of facultative filter feeders,but also indicated that they can tolerate a higher overlap than obligate *** observed differences were related to the habitat preferences and predatory potentials of the species,suggesting that complementarity among the different niche axes might further facilitate theircoexistence.