+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Aging in modular organisms ecology of zooid senescence in steginoporella sp bryozoa cheilostomata

Aging in modular organisms ecology of zooid senescence in steginoporella sp bryozoa cheilostomata

Biological Bulletin (Woods Hole) 164(2): 267-278

The modular construction of clonal plants and animals can lead to physiological deterioration of some clonal components independent of the age or size of the clone as a whole. As a result, senescence does not invariably lead to death (as is the case for solitary organisms), but rather to a patchwork of colony areas exhibiting differing degrees of modular deterioration. In Jamaican cryptic reef environments, older zooids of the cheilostome bryozoan Steginoporella sp. exhibit deterioration in feeding and regenerative abilities, are more heavily fouled by epibionts and contain more stored metabolic waste products when compared to younger zooids. Slower regeneration of broken colony margins in proximal sections allows other encrusting species, which are normally overgrown by the vigorous distal sections of Steginoporella sp., to overgrow senescent sections. Although Steginoporella sp. is the most abundant bryozoan in Jamaican cryptic reef environments, it can occupy space only ephemerally. Evidence suggests that in Steginoporella sp. and ecologically similar species, the disadvantages of proximal senescence are offset by increased translocation of energy or nutrients to vigorously growing distal colony sections.

(PDF emailed within 0-6 h: $19.90)

Accession: 004691648

Download citation: RISBibTeXText

DOI: 10.2307/1541144

Related references

Ageing in modular organisms ecology of zooid senescence in Steginoporella sp Bryozoa; Cheilostomata. Biological Bulletin (Woods Hole) 164.2: 267-278, 1983

Influence of temperature on zooid density of Schizobrachiella sanguinea Bryozoa, Cheilostomata Influenza della temperatura sulla densita degli zoidi di Schizobrachiella sanguinea Bryozoa, Cheilostomata. Biologia Marina Mediterranea, 132: 192-193, 2006

Revision of the genus Steginoporella (Bryozoa, Cheilostomata). Systematics Association Special Volume Series, 565-584 No. 13, 1979

Two new species of Steginoporella (Bryozoa, Cheilostomata) of the Spanish Neogene. Geobios 5, Part 3: 237-245, 1972

Systematic revision of the genus steginoporella bryozoa cheilostomata. Geobios (Villeurbanne) 12(6): 763-818, 1979

Revision des espaces de Steginoporella (Bryozoa-Cheilostomata) du Neoga;ne franYais. Travaux du Laboratoire de Geologie Univ Lyon NS: 14: 7-27, 1967

Revision systematique du genre Steginoporella Smitt, 1873 (Bryozoa Cheilostomata). Geobios (Villeurbanne): 126: 763-817, 1979

Deux nouvelles especes de Steginoporella (Bryozoa, Cheilostomata) du Neogene d'Espagne. Geobios, 53: 237-245, 1972

Innervation of the zooid wall in flustra papyracea bryozoa cheilostomata. Cahiers de Biologie Marine 17: 337-346, 1976

Influence of temperature on zooid density of Schizobrachiella sanguinea Bryozoa, Cheilostomata. Biologia Marina Mediterranea 13. 2, 2006

The influence of seawater temperature on zooid size and growth rate in Pentapora fascialis (Bryozoa: Cheilostomata). ine Biology 149(5): 03-9, 2006

Exploitation of cornucopina tuba bryozoa cheilostomata by aetea curta bryozoa cheilostomata. Journal of Natural History 22(6): 1545-1550, 1988

The genus Stenopsella Bryozoa, Cheilostomata discovery in the Mediterranean Neogene Le genre Stenopsella Bryozoa, Cheilostomata sa presence dans le Neogene mediterraneen. Comptes Rendus de l'Academie des Sciences Serie II A Sciences de la Terre et des Planetes. 5 Octobre; 3217: 623-629, 1995

Zooid individuality and brooding organs (Bryozoa). Additional aspects in the discussion about the phylogeny of the Bryozoa. Zeitschrift Morph Tiere, 753: 255-258, 1973

Faunal and ecological study of the Bryozoa Cheilostomata (Ectoprocta, Cheilostomata) of coastal Tenerife. 1984