Ascidian-associated polychaetes: ecological implications of aggregation size and tube-building chaetopterids on assemblage structure in the Southeastern Pacific Ocean

Roger D. Sepúlveda, Nicolás Rozbaczylo, Christian M. Ibáñez, Marcelo Flores, Juan M. Cancino

Resultado de la investigación: Article

4 Citas (Scopus)

Resumen

Epifaunal polychaetes inhabit a range of habitat structures built by other organisms, such as ascidians. Here, we examine: i) the polychaete fauna inhabiting aggregations of the ascidian Pyura chilensis in central Chile; ii) the relationship between sample volume (aggregation size) and polychaete assemblage variables; and iii) the effect of a tube-building chaetopterid on the polychaete assemblage structure. The chaetopterid tube load on aggregations determines two ascidian morphotypes, those with a high load of chaetopterid tubes (HT morphotype) and those with a low load of chaetopterid tubes (LT morphotype). From a total of 38 aggregations studied, we found 5,524 specimens belonging to 35 species of polychaetes. Three species were the most abundant in the aggregations (Phyllochaetopterus socialis, Nicolea lobulata, and Typosyllis magdalena), reaching 22% of total abundance. The number of species and individuals increased with sample volume, but only the number of species number varied between morphotypes. Sample volume and the chaetopterid tubes influenced the polychaete assemblage structure, evidencing differences between morphotypes. We suggest that both sample volume and the habitat structuring capacity of the chaetopterid tubes change the habitat complexity of the ascidian aggregations and, hence, produce differences between morphotypes related to the polychaete assemblage structure.

Idioma originalEnglish
Páginas (desde-hasta)733-741
Número de páginas9
PublicaciónMarine Biodiversity
Volumen45
N.º4
DOI
EstadoPublished - 1 dic 2015

Huella dactilar

Ascidiacea
morphotype
Pacific Ocean
Polychaeta
polychaete
ocean
Pyura
habitats
habitat structure
sampling
habitat
Chile
fauna
organisms

ASJC Scopus subject areas

  • Oceanography
  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

Citar esto

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Ascidian-associated polychaetes : ecological implications of aggregation size and tube-building chaetopterids on assemblage structure in the Southeastern Pacific Ocean. / Sepúlveda, Roger D.; Rozbaczylo, Nicolás; Ibáñez, Christian M.; Flores, Marcelo; Cancino, Juan M.

En: Marine Biodiversity, Vol. 45, N.º 4, 01.12.2015, p. 733-741.

Resultado de la investigación: Article

TY - JOUR

T1 - Ascidian-associated polychaetes

T2 - ecological implications of aggregation size and tube-building chaetopterids on assemblage structure in the Southeastern Pacific Ocean

AU - Sepúlveda, Roger D.

AU - Rozbaczylo, Nicolás

AU - Ibáñez, Christian M.

AU - Flores, Marcelo

AU - Cancino, Juan M.

PY - 2015/12/1

Y1 - 2015/12/1

N2 - Epifaunal polychaetes inhabit a range of habitat structures built by other organisms, such as ascidians. Here, we examine: i) the polychaete fauna inhabiting aggregations of the ascidian Pyura chilensis in central Chile; ii) the relationship between sample volume (aggregation size) and polychaete assemblage variables; and iii) the effect of a tube-building chaetopterid on the polychaete assemblage structure. The chaetopterid tube load on aggregations determines two ascidian morphotypes, those with a high load of chaetopterid tubes (HT morphotype) and those with a low load of chaetopterid tubes (LT morphotype). From a total of 38 aggregations studied, we found 5,524 specimens belonging to 35 species of polychaetes. Three species were the most abundant in the aggregations (Phyllochaetopterus socialis, Nicolea lobulata, and Typosyllis magdalena), reaching 22% of total abundance. The number of species and individuals increased with sample volume, but only the number of species number varied between morphotypes. Sample volume and the chaetopterid tubes influenced the polychaete assemblage structure, evidencing differences between morphotypes. We suggest that both sample volume and the habitat structuring capacity of the chaetopterid tubes change the habitat complexity of the ascidian aggregations and, hence, produce differences between morphotypes related to the polychaete assemblage structure.

AB - Epifaunal polychaetes inhabit a range of habitat structures built by other organisms, such as ascidians. Here, we examine: i) the polychaete fauna inhabiting aggregations of the ascidian Pyura chilensis in central Chile; ii) the relationship between sample volume (aggregation size) and polychaete assemblage variables; and iii) the effect of a tube-building chaetopterid on the polychaete assemblage structure. The chaetopterid tube load on aggregations determines two ascidian morphotypes, those with a high load of chaetopterid tubes (HT morphotype) and those with a low load of chaetopterid tubes (LT morphotype). From a total of 38 aggregations studied, we found 5,524 specimens belonging to 35 species of polychaetes. Three species were the most abundant in the aggregations (Phyllochaetopterus socialis, Nicolea lobulata, and Typosyllis magdalena), reaching 22% of total abundance. The number of species and individuals increased with sample volume, but only the number of species number varied between morphotypes. Sample volume and the chaetopterid tubes influenced the polychaete assemblage structure, evidencing differences between morphotypes. We suggest that both sample volume and the habitat structuring capacity of the chaetopterid tubes change the habitat complexity of the ascidian aggregations and, hence, produce differences between morphotypes related to the polychaete assemblage structure.

KW - Ascidians

KW - Diversity

KW - Ecosystem engineering

KW - Habitat complexity

KW - Tube-building

UR - http://www.scopus.com/inward/record.url?scp=84949106838&partnerID=8YFLogxK

U2 - 10.1007/s12526-014-0283-7

DO - 10.1007/s12526-014-0283-7

M3 - Article

AN - SCOPUS:84949106838

VL - 45

SP - 733

EP - 741

JO - Marine Biodiversity

JF - Marine Biodiversity

SN - 1867-1616

IS - 4

ER -