Vol. 61, 2022
Special issue: Systematics and Biogeography of Fiddler Crabs (articles 64–71). Editors: Hsi-Te Shih and Benny K. K. Chan
Diversity and Distribution of
Fiddler Crabs (Crustacea: Brachyura: Ocypodidae) around the Arabian Sea
Shih1,*, Mani Prema2,§, Anand Jeya Kumar3,§, Noor Us Saher4,§, Samuthirapandian Ravichandran2,
and Gustav Paulay6
of Life Science and Research Center for Global Change Biology, National
Chung Hsing University, Taichung 402, Taiwan. *Correspondence: E-mail:
Advanced Study in Marine Biology, Annamalai University, Parangipettai -
608 502, Tamil Nadu, India. E-mail: firstname.lastname@example.org (Prema);
Marine Biology, Faculty of Marine Science, King Abdulaziz University,
Jeddah 21589, Saudi Arabia. E-mail: email@example.com (Kumar)
4Center of Excellence in Marine Biology, University of
Karachi, Karachi 75270, Pakistan. E-mail: firstname.lastname@example.org (Saher)
of Fisheries and Aquaculture, Shaheed Benazir Bhutto University of
Veterinary and Animal Sciences, Sakrand- 67210, Sindh, Pakistan.
E-mail: email@example.com (Odhano)
6Florida Museum of Natural History, University of
Florida, Gainesville, FL 32611, USA. E-mail: firstname.lastname@example.org
§MP, AJK, and NUS
contributed equally to this paper.
Received 1 January 2022 / Accepted 25 March 2022
Communicated by Benny K.K. Chan
species of fiddler crabs (Crustacea: Ocypodidae: Gelasiminae) are known
from the Arabian Sea and adjacent waters (Red Sea, Gulf of Aden, Gulf
of Oman and Arabian/Persian Gulf): five species of Austruca, one Cranuca, two Gelasimus and one Tubuca. COI
sequence data match morphological species boundaries and shows high
connectivity within each. The fauna is highly endemic, with three
species of Austruca (A. albimana, A. iranica and A. sindensis) confined
to this region, and four other
species are restricted to the Indian Ocean. Austruca albimana and A. iranica speciated locally and
now have narrowly overlapping ranges in Oman. Our results confirm the
westernmost distributions of Austruca
annulipes and Tubuca alcocki
are Pakistan and the Red Sea, respectively. A key for the nine species
is also provided to help identification.
Key words: Fiddler crabs, Austruca, Cranuca, Gelasimus, Tubuca, Mitochondrial cytochrome c oxidase subunit I (COI), Barcodes.
Shih HT, Prema M, Kumar AJ, Saher NU, Ravichandran S, Odhano S, Paulay
G. 2022. Diversity and distribution of fiddler crabs (Crustacea:
Brachyura: Ocypodidae) around the Arabian Sea. Zool Stud 61:65. doi:10.6620/ZS.2022.61-65.