1
|
Razmi Shah RSB, Ibrahim YS, Villalobos-Guerrero TF, Sato M. Updated checklist of polychaete species (Annelida) recorded from Malaysia, with remarks on the research history. Biodivers Data J 2023; 11:e110021. [PMID: 37901680 PMCID: PMC10603391 DOI: 10.3897/bdj.11.e110021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 09/25/2023] [Indexed: 10/31/2023] Open
Abstract
Background An updated comprehensive checklist of polychaete species, which have been recorded from Malaysian waters, is provided, with their geographic distributions and the research history for them. A total of 57 species belonging to 30 families have been reported since the early 1870s, with Nereididae as the most dominant family with ten species; however, more than half of the total are questionable species in the country. Despite the increased efforts of polychaete studies in the past decade, the taxonomic endeavour of discovering and describing species in the country could be higher. Malaysian polychaetes were mostly recorded from Peninsular Malaysia, whereas very few were from Borneo Island. Most previously recorded species were associated with intertidal and estuarine habitats and a few were found in the subtidal and freshwater environments. We stress the need for urgent research on this biologically, ecologically and culturally relevant taxonomic group as the species accumulation curve grows exponentially in this megadiverse country. New information The current checklist has been updated since the previous one in 2013. Many species previously listed were judged as doubtful and not taxonomically reliable.
Collapse
Affiliation(s)
- Raz Shauqeena Batrisyea Razmi Shah
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Kuala Terengganu, MalaysiaFaculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala NerusKuala TerengganuMalaysia
| | - Yusof Shuaib Ibrahim
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Kuala Terengganu, MalaysiaFaculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala NerusKuala TerengganuMalaysia
| | - Tulio F. Villalobos-Guerrero
- Department of Marine Ecology, Centro de Investigación Científica y de Educación Superior de Ensenada, 22860, Ensenada, Baja California, MexicoDepartment of Marine Ecology, Centro de Investigación Científica y de Educación Superior de Ensenada, 22860Ensenada, Baja CaliforniaMexico
| | - Masanori Sato
- Department of Earth and Environmental Sciences, Graduate School of Engineering and Science, Kagoshima University, 1-21-35 Korimoto, 890-0065, Kagoshima, JapanDepartment of Earth and Environmental Sciences, Graduate School of Engineering and Science, Kagoshima University, 1-21-35 Korimoto, 890-0065KagoshimaJapan
| |
Collapse
|
2
|
Utilizing Pyrolysis-Gas Chromatography/Mass Spectrometry for Monitoring and Analytical Characterization of Microplastics in Polychaete Worms. Polymers (Basel) 2022; 14:polym14153054. [PMID: 35956569 PMCID: PMC9370765 DOI: 10.3390/polym14153054] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/21/2022] [Accepted: 07/26/2022] [Indexed: 02/06/2023] Open
Abstract
Microplastics (the term for plastics at sizes of <5 mm) might be introduced into the environment from domestic or agricultural activities or from the breakdown of plastic pieces, particles, and debris that are bigger in size. Their presence in the aquatic environment has caused accumulation problems, as microplastics do not easily break down and can be digested by some aquatic organisms. This study was conducted to screen and monitor the level of microplastic pollution in polychaete worms using pyrolysis−gas chromatography/mass spectrometry (Py-GC/MS). The study was conducted in Setiu Wetlands, Malaysia from November 2015 to January 2017 at five-month intervals and covered all monsoon changes. Results from physical and visual analyses indicated that a total number of 371.4 ± 20.2 items/g microplastics were retrieved from polychaete for all seasons, in which, the majority comprised transparent microplastics (49.87%), followed by brown with 138.3 ± 13.6 items/g (37.24%), 21.7 ± 1.9 items/g for blue (5.84%), and 12.9 ± 1.1 items/g for black (3.47%), while the remaining were green and grey-red colors. Statistical analysis using Kruskal−Wallis showed insignificant differences (p > 0.05) between the sampling station and period for the presence of a microplastics amount. Most of the microplastics were found in fiber form (81.5%), whereas the remaining comprised fragment (18.31%) and film (0.19%) forms. Further analysis with Py-GC/MS under a selective ion monitoring mode indicated that pyrolytic products and fragment ions for a variety of polymers, such as polyvinyl chloride, polypropylene, polyethylene, polyethylene terephthalate, polyamide, and polymethylmethacrylate, were detected. This study provides an insightful application of Py-GC/MS techniques for microplastics monitoring, especially when dealing with analytical amounts of samples.
Collapse
|
3
|
Villalobos-Guerrero TF, Conde-Vela VM, Sato M. Review of Composetia Hartmann-Schröder, 1985 (Annelida: Nereididae), with the establishment of two new similar genera. J NAT HIST 2022. [DOI: 10.1080/00222933.2021.1976295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Tulio F. Villalobos-Guerrero
- Graduate School of Science and Engineering, Kagoshima University, Kagoshima, Japan
- Depto. Sistemática y Ecología Acuática, El Colegio de la Frontera Sur, Chetumal, Mexico
| | - Víctor M. Conde-Vela
- Depto. Sistemática y Ecología Acuática, El Colegio de la Frontera Sur, Chetumal, Mexico
| | - Masanori Sato
- Graduate School of Science and Engineering, Kagoshima University, Kagoshima, Japan
| |
Collapse
|
4
|
Hamzah SR, Altrawneh RS, Anuar ST, Khalik WMAWM, Kolandhasamy P, Ibrahim YS. Ingestion of microplastics by the estuarine polychaete, Namalycastis sp. in the Setiu Wetlands, Malaysia. MARINE POLLUTION BULLETIN 2021; 170:112617. [PMID: 34139586 DOI: 10.1016/j.marpolbul.2021.112617] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 05/26/2021] [Accepted: 06/03/2021] [Indexed: 06/12/2023]
Abstract
In this study, the ingestion of microplastics by the deposit-feeding polychaete Namalycastis sp. in the estuarine area of the Setiu Wetlands, Malaysia was confirmed. Samples were collected from six stations, covering the wetland from the south to the north, bimonthly between November 2016 and November 2017. Microplastics were extracted from polychaete samples following digestion in an alkaline solution (10 M NaOH). They were identified by physical characteristics (i.e., shape and color under dissecting microscope and scanning electron microscope), and chemical analysis using a LUMOS Fourier Transform Infrared Microscope (μ-FTIR). A total of 3277 pieces were identified, which were dominated by filaments (99.79%) and with the majority transparent in color (84.71%). Most of the microplastics identified were polypropylene (PP) followed by polyamide (PA) based on their main peak in the of μ-FTIR spectrum. Principal component analysis demonstrated the dominance of microplastics at stations 3 and 4 of the sampling area, probably because of the influx from the open sea and from aquaculture. The findings of this research provide baseline information on microplastics ingested by benthic organisms and their fate in the estuarine food web.
Collapse
Affiliation(s)
- Siti Rabaah Hamzah
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Ra'ad Shaher Altrawneh
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Sabiqah Tuan Anuar
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia; Microplastic Research Interest Group (MRIG), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Wan Mohd Afiq Wan Mohd Khalik
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia; Microplastic Research Interest Group (MRIG), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Prabhu Kolandhasamy
- Coastal and Marine Ecology Division, Gujarat Institute of Desert Ecology, Bhuj-Kachchh 370001, India
| | - Yusof Shuaib Ibrahim
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia; Microplastic Research Interest Group (MRIG), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia.
| |
Collapse
|
5
|
Villalobos-Guerrero TF, Idris I. Reproductive morphology and redescriptions of some Neanthes Kinberg, 1865 (Annelida: Nereididae) species from the southeastern Asian seas, with comparative synoptic tables of accepted species. THE EUROPEAN ZOOLOGICAL JOURNAL 2021. [DOI: 10.1080/24750263.2021.1899318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
- T. F. Villalobos-Guerrero
- El Colegio de la Frontera Sur, Chetumal, Mexico
- South China Sea Repository and Reference Centre, Institute of Oceanography and Environment, Universiti Malaysia Terengganu, Kuala Nerus, Malaysia
| | - I. Idris
- South China Sea Repository and Reference Centre, Institute of Oceanography and Environment, Universiti Malaysia Terengganu, Kuala Nerus, Malaysia
| |
Collapse
|
6
|
Azmi SS, Ibrahim YS, Angsupanich S, Sumpuntarat P, Sato M. Epitokous metamorphosis, reproductive swimming, and early development of the estuarine polychaete, Neanthes glandicincta Southern, 1921 (Annelida, Nereididae) on the east coast of the Malay Peninsula. Zookeys 2021; 1011:1-24. [PMID: 33551646 PMCID: PMC7835201 DOI: 10.3897/zookeys.1011.59780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 12/13/2020] [Indexed: 11/22/2022] Open
Abstract
The reproductive and developmental characteristics of the nereidid polychaete, Neanthesglandicincta Southern, 1921, commonly recorded in tropical estuaries in the Indo-West Pacific, were examined from Malaysia (the mangrove area of Kuala Ibai, Terengganu) and Thailand (the Lower Songkhla Lagoon) on the east coast of the Malay Peninsula. Epitokous metamorphosis of fully mature males and females and their reproductive swimming behaviour were recorded based on ten Malaysian epitokous specimens, which were collected at night during spring tides in a period of January 2018 to March 2019. Six Thailand epitokes were obtained in February and March 2006 by the laboratory rearing of immature worms. Epitokous metamorphosis is characterised by the enlargement of eyes in both sexes, division of the body into three parts and modification of parapodia with additional lobes in the mid-body of males, and replacement of atokous chaetae in the mid-body by epitokous natatory chaetae, completely in males and incompletely in females. The diameter of coelomic unfertilised eggs in females was 100–140 µm. After fertilisation, each egg formed a jelly layer, inside which embryonic development progressed. Trochophores hatched out of the jelly layer, entering a short free-swimming larval phase followed by demersal life at the early stage of 3-chaetiger nectochaeta one day after fertilisation. Then, the larvae entered benthic life as juveniles, crawling on the bottom, at the late stage of 3-chaetiger nectochaeta two days after fertilisation. The results indicate that N.glandicincta has an annual life cycle, which is usually completed within an estuary with limited larval dispersal ability.
Collapse
Affiliation(s)
- Siti Syazwani Azmi
- Institute of Oceanography and Environment, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
| | - Yusof Shuaib Ibrahim
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
| | - Saowapa Angsupanich
- Marine and Coastal Resources Institute, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Pornsan Sumpuntarat
- Marine and Coastal Resources Institute, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Masanori Sato
- Research Field in Science, Science and Engineering Area, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan
| |
Collapse
|