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  4. Population Demographics and Life History Characteristics of Heliofungia actiniformis: a Fungiid Coral Species Exploited for the Live Coral Aquarium Trade in the Spermonde Archipelago, Indonesia
 
Zitierlink URN
https://nbn-resolving.de/urn:nbn:de:gbv:46-diss000110060

Population Demographics and Life History Characteristics of Heliofungia actiniformis: a Fungiid Coral Species Exploited for the Live Coral Aquarium Trade in the Spermonde Archipelago, Indonesia

Veröffentlichungsdatum
2008-05-29
Autoren
Knittweis, Leyla  
Betreuer
Richter, Claudio  
Gutachter
Kochzius, Marc  
Zusammenfassung
A popular coral in the Indonesian live coral trade is the fungiid Heliofungia actiniformis. At non-harvested sites attached polyps aged 0-4 years were found to be most abundant, and growth rates decreased linearly with size. At harvested sites, total mortality rates were significantly higher for polyps sized 0-11 cm, and semi-structured interviews with local fishermen confirmed a size selective fishery towards small polyps. A utility per recruit calculation revealed maximum potential economic yield to occur at an age of 5 years, five years before reaching reproductive maturity. Subsequent Thompson and Bell calculations highlighted the need for a combination of size limits, quota reductions as well as the protection of spawning stocks. Genetic population connectivity patterns of H. actiniformis revealed significant genetic structuring, both among populations in South Sulawesi and throughout the Indo-Malay Archipelago. At both scales the degree of geographic separation and oceanographic features influenced the degree of larval exchange, with historical influences additionally shaping patterns on the large scale.
Schlagwörter
Live coral trade

; 

coral population dynamics

; 

population yield

; 

coral population genetics

; 

Fungiidae
Institution
Universität Bremen  
Fachbereich
Fachbereich 02: Biologie/Chemie (FB 02)  
Dokumenttyp
Dissertation
Zweitveröffentlichung
Nein
Sprache
Englisch
Dateien
Lade...
Vorschaubild
Name

00011006.pdf

Size

3.24 MB

Format

Adobe PDF

Checksum

(MD5):dd47530ad5ef146b09c7672d2e83371c

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