TY - JOUR
T1 - Size structure and distribution of Ovassiminea brevicula (Gastropoda) in a Thai mangrove swamp
AU - Suzuki, Takao
AU - Nishihira, Moritaka
AU - Paphavasit, Nittharatana
N1 - Funding Information:
We sincerely thank villagers of Klong Kone village and students of Chulalongkorn University for support during field work. We also thank Ajcharaporn Piumsomboon, Ekapol Aumnuch, Shuichi Shikano, Terumasa Toya and Kengo Kurata for their assistance and Taiji Kurozumi for his identification of snails. This study was supported by Grant-in-Aid for International Scientific Research (Field Research: No. 06041008, No. 07041121 and No. 08041133) from the Ministry of Education, Science, Sports and Culture of Japan.
PY - 2002/6
Y1 - 2002/6
N2 - Ovassiminea brevicula (Pfeiffer) (Assimineidae: Gastropoda) was one of the most abundant and representative benthic invertebrates in the Samut Songkhram mangrove swamp, Thailand. It lived mainly in the mangrove forest with high average densities ranging from 44 to 340 snails·m-2 and abundant in the sites where much litter, dead branches and seedlings were present. Average shell length in the mature forest ranged from 4.73 to 5.74 mm (range: 2.26-8.30 mm) and size structures showed different patterns among the stations. In the seaward mudflat, O. brevicula appeared immediately after the saplings of Avicennia alba Blume 1826 were planted. Thereafter, its densities increased with the growth of A. alba trees, probably due to provision of favourable microhabitats under the canopies. In the mudflat with only small saplings and outside the canopy of the young forest 2 years after planting, mean shell lengths were 3.45 and 3.19 mm respectively. Under the canopy of the young forest, however, mean shell length was 4.34 mm with a few larger snails. Three cohorts were separated for snail populations in the mature forest and larval recruitment seemed to occur from February to May.
AB - Ovassiminea brevicula (Pfeiffer) (Assimineidae: Gastropoda) was one of the most abundant and representative benthic invertebrates in the Samut Songkhram mangrove swamp, Thailand. It lived mainly in the mangrove forest with high average densities ranging from 44 to 340 snails·m-2 and abundant in the sites where much litter, dead branches and seedlings were present. Average shell length in the mature forest ranged from 4.73 to 5.74 mm (range: 2.26-8.30 mm) and size structures showed different patterns among the stations. In the seaward mudflat, O. brevicula appeared immediately after the saplings of Avicennia alba Blume 1826 were planted. Thereafter, its densities increased with the growth of A. alba trees, probably due to provision of favourable microhabitats under the canopies. In the mudflat with only small saplings and outside the canopy of the young forest 2 years after planting, mean shell lengths were 3.45 and 3.19 mm respectively. Under the canopy of the young forest, however, mean shell length was 4.34 mm with a few larger snails. Three cohorts were separated for snail populations in the mature forest and larval recruitment seemed to occur from February to May.
KW - Assimineid gastropod
KW - Avicennia alba
KW - Distribution
KW - Forestation
KW - Mangrove snail
KW - Mangrove swamp
KW - Ovassiminea brevicula
KW - Population dynamics
KW - Size structure
KW - Thailand
UR - http://www.scopus.com/inward/record.url?scp=0036622864&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036622864&partnerID=8YFLogxK
U2 - 10.1023/A:1020115411316
DO - 10.1023/A:1020115411316
M3 - Article
AN - SCOPUS:0036622864
VL - 10
SP - 265
EP - 271
JO - Wetlands Ecology and Management
JF - Wetlands Ecology and Management
SN - 0923-4861
IS - 3
ER -