Effects of salinity and temperature on the larval development of a sesarmid crab Neosarmatium trispinosum Davie (Crustacea: Brachyura: Sesarmidae) from mangrove swamp in Okinawa Island, Japan
The larval development of the semiterrestrial sesarmid mangrove crab Neosarmarium trispinosum was studied under laboratory conditions at salinities 0-35%o and constant temperatures of 20-30°C. The larval development consists of five zoeal stages and a megalopa. Larvae survived to the first crab stage at salinities between 15 and 35%o with different percentages. At 0, 5 and 10%o, the larvae died within 12-18 hours without moulting to subsequent stages. The highest survival rate was recorded at 20-25%o and 25-30°C with shortest development duration to the first crab stage ranging from 24-28 days. At the highest salinity (35%o), survival rate was gradually decreased with increasing development duration. There were significant differences (P<O.Ol) found in the development period among the tested salinities. Results of this study suggest that the larvae of N. trispinosum develop in estuarine water and recruit to the mangrove swamp at the megalopa stage, where they spend the rest of their lives.
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Format: | article biblioteca |
Language: | English |
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2003
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Subjects: | Biology, Fisheries, Mangrove crab, Neosarmatium trispinosum, Larval development, |
Online Access: | http://hdl.handle.net/1834/33186 |
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dig-aquadocs-1834-331862021-06-27T02:43:52Z Effects of salinity and temperature on the larval development of a sesarmid crab Neosarmatium trispinosum Davie (Crustacea: Brachyura: Sesarmidae) from mangrove swamp in Okinawa Island, Japan Sirajul Islam, Md. Shokita, Shigemitsu Biology Fisheries Mangrove crab Neosarmatium trispinosum Larval development The larval development of the semiterrestrial sesarmid mangrove crab Neosarmarium trispinosum was studied under laboratory conditions at salinities 0-35%o and constant temperatures of 20-30°C. The larval development consists of five zoeal stages and a megalopa. Larvae survived to the first crab stage at salinities between 15 and 35%o with different percentages. At 0, 5 and 10%o, the larvae died within 12-18 hours without moulting to subsequent stages. The highest survival rate was recorded at 20-25%o and 25-30°C with shortest development duration to the first crab stage ranging from 24-28 days. At the highest salinity (35%o), survival rate was gradually decreased with increasing development duration. There were significant differences (P<O.Ol) found in the development period among the tested salinities. Results of this study suggest that the larvae of N. trispinosum develop in estuarine water and recruit to the mangrove swamp at the megalopa stage, where they spend the rest of their lives. 2021-06-24T17:28:39Z 2021-06-24T17:28:39Z 2003 article 1026-6690 http://hdl.handle.net/1834/33186 en application/pdf application/pdf 83-92 http://aquaticcommons.org/id/eprint/17699 17292 2015-09-13 06:10:35 17699 Bangladesh Fisheries Research Institute |
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Biology Fisheries Mangrove crab Neosarmatium trispinosum Larval development Biology Fisheries Mangrove crab Neosarmatium trispinosum Larval development |
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Biology Fisheries Mangrove crab Neosarmatium trispinosum Larval development Biology Fisheries Mangrove crab Neosarmatium trispinosum Larval development Sirajul Islam, Md. Shokita, Shigemitsu Effects of salinity and temperature on the larval development of a sesarmid crab Neosarmatium trispinosum Davie (Crustacea: Brachyura: Sesarmidae) from mangrove swamp in Okinawa Island, Japan |
description |
The larval development of the semiterrestrial sesarmid mangrove crab Neosarmarium trispinosum was studied under laboratory conditions at salinities 0-35%o and constant temperatures of 20-30°C. The larval development consists of five zoeal stages and a megalopa. Larvae survived to the first crab stage at salinities between 15 and 35%o with different percentages. At 0, 5 and 10%o, the larvae died within 12-18 hours without moulting to subsequent stages. The highest survival rate was recorded at 20-25%o and 25-30°C with shortest development duration to the first crab stage ranging from 24-28 days. At the highest salinity (35%o), survival rate was gradually decreased with increasing development duration. There were significant differences (P<O.Ol) found in the development period among the tested salinities. Results of this study suggest that the larvae of N. trispinosum develop in estuarine water and recruit to the mangrove swamp at the megalopa stage, where they spend the rest of their lives. |
format |
article |
topic_facet |
Biology Fisheries Mangrove crab Neosarmatium trispinosum Larval development |
author |
Sirajul Islam, Md. Shokita, Shigemitsu |
author_facet |
Sirajul Islam, Md. Shokita, Shigemitsu |
author_sort |
Sirajul Islam, Md. |
title |
Effects of salinity and temperature on the larval development of a sesarmid crab Neosarmatium trispinosum Davie (Crustacea: Brachyura: Sesarmidae) from mangrove swamp in Okinawa Island, Japan |
title_short |
Effects of salinity and temperature on the larval development of a sesarmid crab Neosarmatium trispinosum Davie (Crustacea: Brachyura: Sesarmidae) from mangrove swamp in Okinawa Island, Japan |
title_full |
Effects of salinity and temperature on the larval development of a sesarmid crab Neosarmatium trispinosum Davie (Crustacea: Brachyura: Sesarmidae) from mangrove swamp in Okinawa Island, Japan |
title_fullStr |
Effects of salinity and temperature on the larval development of a sesarmid crab Neosarmatium trispinosum Davie (Crustacea: Brachyura: Sesarmidae) from mangrove swamp in Okinawa Island, Japan |
title_full_unstemmed |
Effects of salinity and temperature on the larval development of a sesarmid crab Neosarmatium trispinosum Davie (Crustacea: Brachyura: Sesarmidae) from mangrove swamp in Okinawa Island, Japan |
title_sort |
effects of salinity and temperature on the larval development of a sesarmid crab neosarmatium trispinosum davie (crustacea: brachyura: sesarmidae) from mangrove swamp in okinawa island, japan |
publishDate |
2003 |
url |
http://hdl.handle.net/1834/33186 |
work_keys_str_mv |
AT sirajulislammd effectsofsalinityandtemperatureonthelarvaldevelopmentofasesarmidcrabneosarmatiumtrispinosumdaviecrustaceabrachyurasesarmidaefrommangroveswampinokinawaislandjapan AT shokitashigemitsu effectsofsalinityandtemperatureonthelarvaldevelopmentofasesarmidcrabneosarmatiumtrispinosumdaviecrustaceabrachyurasesarmidaefrommangroveswampinokinawaislandjapan |
_version_ |
1756079058587746304 |