Feeding behavior of the ocypodid crab Macrophthalmus japonicus and its effects on oxygen-penetration depth and organic-matter removal in intertidal sediments

Title
Feeding behavior of the ocypodid crab Macrophthalmus japonicus and its effects on oxygen-penetration depth and organic-matter removal in intertidal sediments
Author(s)
구본주; 김성한; 현정호
KIOST Author(s)
Koo, Bon Joo(구본주)Kim, Sung Han(김성한)
Publication Year
2019-08-20
Abstract
This study examined the poorly understood feeding behavior of the ocypodid crab Macrophthalmus japonicus in the field to explore its effects on oxygen-penetration depth (OPD) and organic-matter removal from intertidal sediments. An in situinvestigation was conducted on an upper mud flat in the mouth of the Han River estuary, on the western coast of Korea. The behavior of M. japonicus and variation in the OPD within its habitat were surveyed and contents of organic materialssuch as organic carbon (OC), organic nitrogen (ON) and δ15N in its feeding pellets were compared as contrasted with non-feeding sediments during the daytime ebb in summer. We continuously recorded the surface activity of the crab during two main feeding periods and during a resting period, when the crabs remain immobile on the surface. Feeding periods exceeded 1 h crabs fed on sediments more actively during the first feeding period (45 pseudo-pellets individual
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/22529
Bibliographic Citation
2019한국습지학회 국제학술발표회, pp.77, 2019
Publisher
(사)한국습지학회 / 순천시
Type
Conference
Language
English
Publisher
(사)한국습지학회 / 순천시
Related Researcher
Research Interests

benthic ecology,bioturbation,remote sensing,저서생태학,생물교란,원격탐사

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