Limnoperna fortunei colonies: Structure, distribution and dynamics

Settlement of new recruits of Limnoperna fortunei occurs preferentially on areas already colonized by conspecifics, and on surfaces with well-developed periphytic biofilms. Hard substrata (immobile rocks, wood) are preferred by the mussel, but colonization can also take place on muddy areas stabiliz...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Correa, N., Sardiña, P., Perepelizin, P.V., Boltovskoy, D.
Formato: CHAP
Materias:
Biomass
Colonies
Density
Golden mussel
Limnoperna fortunei
Multiannual cycles
Recruits
Size structure
Substrate
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_97833191_v_n_p119_Correa
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_97833191_v_n_p119_Correa
record_format dspace
spelling todo:paper_97833191_v_n_p119_Correa2023-10-03T16:44:49Z Limnoperna fortunei colonies: Structure, distribution and dynamics Correa, N. Sardiña, P. Perepelizin, P.V. Boltovskoy, D. Biomass Colonies Density Golden mussel Limnoperna fortunei Multiannual cycles Recruits Size structure Substrate Settlement of new recruits of Limnoperna fortunei occurs preferentially on areas already colonized by conspecifics, and on surfaces with well-developed periphytic biofilms. Hard substrata (immobile rocks, wood) are preferred by the mussel, but colonization can also take place on muddy areas stabilized by roots or fibrous debris, on floating and submerged plants, and on mussel shells, crustaceans, etc. Colonization starts in crevices, angles and other sites inaccessible to large predators, but it often extends over open areas as well. Mussel beds rarely exceed 7-10 cm in thickness, with most adults being at least partially attached to the substrate. Juveniles often settle on larger shells. Densities of over 200,000 ind./m2 have been reported occasionally, but such high numbers are invariably dominated by specimens < 2 mm in length. Densities of adult mussels (>5-7 mm) are usually below 10,000 ind./m2. The only site where densities were estimated over an entire water body, the reservoir Embalse de Río Tercero, yielded an average of 959 ind./m2. Mussel colonies are usually most abundant and dense along the coastal fringe, where rock outcrops are common. Deeper areas are covered with clay and silt, and are therefore unfit for mussel colonization. Data at hand are still insufficient for describing multiannual trends in mussel abundance in South America; however, ancillary evidence suggests that, after having peaked 7-10 years after introduction, densities have been waning. Size structure of individuals in mussel colonies depends strongly on the time of the year. During periods of peak recruitment (spring to late summer) juveniles < Size structure of individual > 2 mm in length can represent >90% of the population, whereas during the winter they normally account for 10-15%. © Springer International Publishing Switzerland 2015. Fil:Correa, N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Perepelizin, P.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Boltovskoy, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. CHAP info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_97833191_v_n_p119_Correa
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Biomass
Colonies
Density
Golden mussel
Limnoperna fortunei
Multiannual cycles
Recruits
Size structure
Substrate
spellingShingle Biomass
Colonies
Density
Golden mussel
Limnoperna fortunei
Multiannual cycles
Recruits
Size structure
Substrate
Correa, N.
Sardiña, P.
Perepelizin, P.V.
Boltovskoy, D.
Limnoperna fortunei colonies: Structure, distribution and dynamics
topic_facet Biomass
Colonies
Density
Golden mussel
Limnoperna fortunei
Multiannual cycles
Recruits
Size structure
Substrate
description Settlement of new recruits of Limnoperna fortunei occurs preferentially on areas already colonized by conspecifics, and on surfaces with well-developed periphytic biofilms. Hard substrata (immobile rocks, wood) are preferred by the mussel, but colonization can also take place on muddy areas stabilized by roots or fibrous debris, on floating and submerged plants, and on mussel shells, crustaceans, etc. Colonization starts in crevices, angles and other sites inaccessible to large predators, but it often extends over open areas as well. Mussel beds rarely exceed 7-10 cm in thickness, with most adults being at least partially attached to the substrate. Juveniles often settle on larger shells. Densities of over 200,000 ind./m2 have been reported occasionally, but such high numbers are invariably dominated by specimens < 2 mm in length. Densities of adult mussels (>5-7 mm) are usually below 10,000 ind./m2. The only site where densities were estimated over an entire water body, the reservoir Embalse de Río Tercero, yielded an average of 959 ind./m2. Mussel colonies are usually most abundant and dense along the coastal fringe, where rock outcrops are common. Deeper areas are covered with clay and silt, and are therefore unfit for mussel colonization. Data at hand are still insufficient for describing multiannual trends in mussel abundance in South America; however, ancillary evidence suggests that, after having peaked 7-10 years after introduction, densities have been waning. Size structure of individuals in mussel colonies depends strongly on the time of the year. During periods of peak recruitment (spring to late summer) juveniles < Size structure of individual > 2 mm in length can represent >90% of the population, whereas during the winter they normally account for 10-15%. © Springer International Publishing Switzerland 2015.
format CHAP
author Correa, N.
Sardiña, P.
Perepelizin, P.V.
Boltovskoy, D.
author_facet Correa, N.
Sardiña, P.
Perepelizin, P.V.
Boltovskoy, D.
author_sort Correa, N.
title Limnoperna fortunei colonies: Structure, distribution and dynamics
title_short Limnoperna fortunei colonies: Structure, distribution and dynamics
title_full Limnoperna fortunei colonies: Structure, distribution and dynamics
title_fullStr Limnoperna fortunei colonies: Structure, distribution and dynamics
title_full_unstemmed Limnoperna fortunei colonies: Structure, distribution and dynamics
title_sort limnoperna fortunei colonies: structure, distribution and dynamics
url http://hdl.handle.net/20.500.12110/paper_97833191_v_n_p119_Correa
work_keys_str_mv AT correan limnopernafortuneicoloniesstructuredistributionanddynamics
AT sardinap limnopernafortuneicoloniesstructuredistributionanddynamics
AT perepelizinpv limnopernafortuneicoloniesstructuredistributionanddynamics
AT boltovskoyd limnopernafortuneicoloniesstructuredistributionanddynamics
_version_ 1807322186352951296

Ejemplares similares