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https://ptsldigital.ukm.my/jspui/handle/123456789/519492| Title: | Taxonomical Studies Of The Caprellidean Amphipod From The East Johor Island Archipelago (EJIA), Malaysia |
| Authors: | Jacqueline Lim Hui Chern (P46551) |
| Supervisor: | Othman Hj. Ross, Prof. Dr. |
| Keywords: | Taxonomical Studies Of The Caprellidean Amphipod From The East Johor Caprellidean Amphipod Taxonomical Studies East Johor Island Archipelago Taxonomical Studies Crustacea--Malaysia--Johor |
| Issue Date: | 5-Dec-2013 |
| Description: | An extensive study of the caprellidean amphipod fauna around the East Johor Island Archipelago (EJIA) was carried out using samples collected between 2008 and 2010 from shallow waters (1-20 m) surrounding 13 main islands (Pulau Tinggi, Pulau Rawa, Pulau Besar, Pulau Tengah, Pulau Hujung, Pulau Mensirip, Pulau Harimau, Pulau Goal, Pulau Mentinggi, Pulau Sibu, Pulau Sibu Hujung, Pulau Aur and Pulau Pemanggil) off the east-coast of Peninsular Malaysia (South China Sea). Caprellid specimens were hand-picked from formalin-washed samples of a variety of host and substrate such as hydroids, gorgonians, seagrass, macroalgae, filamentous algae, abandoned fishing nets and ropes. These hosts were collected in the field from different habitat types such as seagrass beds, natural coral reefs and artificial reefs by means of snorkeling, diving and towing a portable sledge. Caprellids were also obtained from sieved sediment samples of an epibenthic sledge. Descriptions were based on complete illustrations of each species (both males and females) comprising lateral view figures of their whole body and their respective appendages; all of which were measured and scaled accordingly. Nearly 15 000 individuals of caprellidean amphipods were collected and examined; resulting in the discovery of 10 species from 7 genera in 2 families with the highest densities found on stinging hydroids and gorgonians. All species are new records for the EJIA. Out of the 5 existing caprellidean families, 2 major families were collected in this study; the family Caprellidae which constitutes more than half of the world��s caprellidean species and the family Phtisicidae comprising more than 23 genera. During this study, 6 genera from the family Caprellidae (Aciconula, Hemiaegina, Metaprotella, Orthoprotella, Paraprotella and Pseudaeginella) and 1 genus from the family Phtisicidae (Microtripus) were discovered. Among the species recorded, 6 are undescribed species, new to science [(1) Aciconula serrata; (2) Metaprotella kampungsebirah; (3) Metaprotella rawaensis; (4) Orthoprotella bicornis; (5) Paraprotella teluksuang; and (6) Pseudaeginella telukrimau], 2 are new records for Malaysia (Hemiaegina minuta Mayer, 1890 and Microtripus tinggiensis Lim et al., 2012) and 2 subspecies of Metaprotella sandalensis (Metaprotella sandalensis var. singaporensis; Metaprotella sandalensis var. dolichocephala) is elevated to species rank and synonymized as Metaprotella sp. A and Metaprotella sp. B. These species which were collected for the first time in the Malaysian waters, showed very different distribution patterns from the temperate regions. Seven out of 10 species are endemic to Malaysia while one species (Hemiaegina minuta) is cosmopolitan, displaying wide geographical distribution in the world��s oceans. The majority of species occurring here is largely represented by Metaprotella and/or Protella related genera; indicating that it is the most dominant and ubiquitous genera occurring in nearly 90% of the sites sampled and are likely among the most common caprellidean amphipods in the South China Sea. An illustrated key to the 10 species of caprellidean amphipods from the EJIA is provided. Differences, both independently and as a whole between the caprellidean fauna of the EJIA with other reported species were also compared and discussed. This study addresses a much needed awareness on caprellidean fauna composition and taxonomy in Malaysia and the tropical Indo-West Pacific and is a stepping stone towards future studies in understanding its life history and phylogeny.,PhD |
| Pages: | 241 |
| Call Number: | QL435 .L535 2013 |
| Publisher: | UKM, Bangi |
| Appears in Collections: | Faculty of Science and Technology / Fakulti Sains dan Teknologi |
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