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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50699

Title: The presence of Macromedaeus distinguendus (De Haan, 1835) (Brachyura, Xanthidae) in the shallow hydrothermal vent system off northeastern Taiwan
Authors: Li-Chun Tseng
Parinya Limviriyakul
Ping-Ho Ho
Jiang-Shiou Hwang
Contributors: 國立臺灣海洋大學:生命科學暨生物科技學系
Keywords: Macromedaeus distinguendus
morphological traits
traits morphologiques
body weight
longueur de pince
poids du corps
cheminée hydrothermale
largeur de la carapace
chela length
hydrothermal vent
carapace width
Date: 2018
Issue Date: 2018-10-22T02:25:24Z
Publisher: Crustaceana
Abstract: Abstract: The present study investigated the population of the xanthid brachyuran crab, Macromedaeus distinguendus (De Haan, 1835), at a toxic hydrogen sulfide, shallow hydrothermal vent area at Turtle Island, off northeastern Taiwan. This is the first record of this species from this extreme environment, and M. distinguendus is only the second brachyuran discovered in this area. The wet weight of male and female M. distinguendus varied from 0.11 to 1.22 g (mean ± standard deviation: 0.56 ± 0.39 g) and 0.06 to 0.62 g (0.37 ± 0.15 g), respectively. The wet weight: carapace width ratio was significantly correlated in both sexes. The local distribution patterns of M. distinguendus were different from those of the obligate hydrothermal crab Xenograpsus testudinatus N. K. Ng, J.-F. Huang & Ho, 2000 (Xenograpsidae) in this area. An analysis of resource use and habitat partitioning revealed that the two crab species were able to co-exist within the study area.

The present study investigated the population of the xanthid brachyuran crab, Macromedaeus distinguendus (De Haan, 1835), at a toxic hydrogen sulfide, shallow hydrothermal vent area at Turtle Island, off northeastern Taiwan. This is the first record of this species from this extreme environment, and M. distinguendus is only the second brachyuran discovered in this area. The wet weight of male and female M. distinguendus varied from 0.11 to 1.22 g (mean ± standard deviation: 0.56 ± 0.39 g) and 0.06 to 0.62 g (0.37 ± 0.15 g), respectively. The wet weight: carapace width ratio was significantly correlated in both sexes. The local distribution patterns of M. distinguendus were different from those of the obligate hydrothermal crab Xenograpsus testudinatus N. K. Ng, J.-F. Huang & Ho, 2000 (Xenograpsidae) in this area. An analysis of resource use and habitat partitioning revealed that the two crab species were able to co-exist within the study area.
Relation: 91(7) pp.879-895
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50699
Appears in Collections:[生命科學暨生物科技學系] 期刊論文

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