scholarly journals A New Inland Record of the Bull Shark Carcharhinus leucas (Müller & Henle 1839) from Peninsular Malaysia

2021 ◽  
Vol 50 (10) ◽  
pp. 3153-3158
Author(s):  
Veryl Hasan ◽  
Dian Samitra ◽  
Maheno S. Widodo ◽  
Peter Gausmann
Keyword(s):  
Iucn Red List ◽  
Peninsular Malaysia ◽  
Red List ◽  
Single Specimen ◽  
Rare Finding ◽  
Dorsal Fin ◽  
Carcharhinus Leucas ◽  
Bull Shark ◽  
Fresh Specimen ◽  
White Belly

A single specimen of a bull shark Carcharhinus leucas (Müller & Henle 1839) with c. 102 cm of total length was landed and photographed on 25 March 2019 in Sungai Mawai Lama, about 25 km inland, Kota Tinggi District, Johor, Peninsular Malaysia. This rare finding represents only the second record of C. leucas in inland Peninsular Malaysia. This shark was identified as C. leucas by the snout much shorter than the width of mouth and bluntly rounded, first dorsal fin triangular, rearward sloping, originating over or slightly behind pectoral insertion, second dorsal fin much smaller than the first dorsal fin (< 3.1:1), and lack of an interdorsal ridge. The coloration of fresh specimen: greyish back and white belly, the dark coloration on the tip of the caudal fins and second dorsal fin. This species is currently listed as a vulnerable species based on the IUCN Red List Status. Further study and monitoring are needed to assess the possibility of the importance of Sungai Mawai Lama as critical habitat of C. leucas.

scholarly journals Short Communication: The presence of Bull shark Carcharhinus leucas (Elasmobranchii: Carcharhinidae) in the fresh waters of Sumatra, Indonesia

2020 ◽  
Vol 21 (9) ◽  
Author(s):  
VERYL HASAN ◽  
Maheno Widodo
Keyword(s):  
Short Communication ◽  
Fork Length ◽  
Iucn Red List ◽  
Small Scale ◽  
Migration Route ◽  
Meristic Characters ◽  
Fresh Waters ◽  
Carcharhinus Leucas ◽  
Bull Shark ◽  
Fresh Specimen

Abstract. Hasan V, Widodo MS. 2020. Short Communication: The presence of Bull shark Carcharhinus leucas (Elasmobranchii: Carcharhinidae) in the fresh waters of Sumatra, Indonesia. Biodiversitas 21: 4433-4439. A single subadult specimen of Bull shark Carcharhinus leucas was photographed and captured by local fisherman using casting net on June 2020 in the upper Indragiri River, Riau Province, Indonesia. Carcharhinus leucas are one of only a few species of elasmobranchs that live in both marine and freshwater environments. This species currently listed as a near-threatened species based on the IUCN Red List Status. Singel specimen identified as C. leucas by the coloration of fresh specimen: white belly and greyish back, first dorsal fin high, tip of second dorsal and caudal fins black. Meristic characters measurement results as follows: total length 102 cm; fork length 86.3 cm; preanal length 65.1 cm; pre pelvic length 51.9 cm; pre pectoral length 22.5 cm; pre-orbital length 8.3 cm; head length 25 cm; pre-first dorsal length 29.4 cm; pre-second dorsal length 56 cm, and pre-caudal length 78.1 cm. This photo is considered as the third record from freshwaters of Sumatra after in the Batang Hari River, Jambi Province in 1997, and in the Musi River, South Sumatra Province in 2019. The photographic records indicate that a single specimen of C. leucas was found in the upper Indragiri River recorded more than 150 km inland. These results enhanced the understanding of C. leucas distribution in Sumatra freshwaters. Monitoring is needed to assess the possibility of the importance of the upper Indragiri River as a migration route, nursery, and growth ground of C. leucas. Studying small scale habitat use of C. leucas is challenged by their preferred habitats in freshwaters environments with fast-changing environmental conditions. Water conditions in the upper Indragiri River, namely salinity 0‰, temperature 25-27°C, dissolved oxygen 3.9-11.1 mg/l, are ideal for A. leucas habitat.

scholarly journals Notes on Singaporean native Zingiberales II: revision of Marantaceae, with a new generic record and notes on naturalised and commonly cultivated exotic species

Phytotaxa ◽  
2016 ◽  
Vol 289 (3) ◽  
pp. 201 ◽  
Author(s):  
MATTI A. NIISSALO ◽  
GILLIAN S. KHEW ◽  
EDWARD L. WEBB ◽  
JANA LEONG-ŠKORNIČKOVÁ
Keyword(s):  
Exotic Species ◽  
Native Species ◽  
Iucn Red List ◽  
Peninsular Malaysia ◽  
Red List ◽  
Identification Key ◽  
The Status ◽  
Generic Record

An illustrated revision of Marantaceae in Singapore with an identification key and proposed national IUCN Red List assessments is presented here. In total three genera and four species are considered native to Singapore (Donax canniformis, Phrynium hirtum, Stachyphrynium parvum, and Stachyphrynium latifolium) representing 33 % of diversity currently known to occur in Peninsular Malaysia. Although the genus Phrynium Willdenow (1797: 1) was previously reported for Singapore based on the presence of P. villosulum, we show that this species is, contrary to previous accounts, not native but introduced. Newly reported Phrynium hirtum therefore represents a new native generic record for the country. We are changing the status of Schumannianthus benthamianus, previously considered native, to cultivated, as there are no historic or recent collections of this species. Non-native species commonly employed in Singapore streetscapes and parks are also briefly discussed and illustrated in this paper. Actoplanes ridleyi, Donax grandis, Donax parviflora, Maranta tonchat, Phrynium latifolium and Phrynium sumatranum are lectotypified and Maranta arundinacea Blanco (non L.) is neotypified.

scholarly journals Not in the Least Concern: anthropogenic influences on a South-east Asian apple snail Pila scutata (Ampullariidae)

Oryx ◽  
2018 ◽  
Vol 53 (2) ◽  
pp. 230-238 ◽  
Author(s):  
Ting Hui Ng ◽  
Siong Kiat Tan ◽  
Amirrudin Ahmad ◽  
Do Van Tu ◽  
Ravindra C. Joshi ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
East Asian ◽  
Iucn Red List ◽  
Peninsular Malaysia ◽  
Red List ◽  
Taxonomic Resolution ◽  
Malay Peninsula ◽  
Apple Snail ◽  
Widespread Species ◽  
16S Sequencing

AbstractSouth-east Asian apple snails, Pila spp., have been declining since the introduction of globally invasive, confamilial South American Pomacea spp., yet Pila ecology remains poorly studied, with most occurrence records unconfirmed. Pila scutata, a previously widespread species, presumed native to the Malay peninsula and assessed as Least Concern in the IUCN Red List, was formerly harvested for food, and may have experienced anthropogenic translocations. We surveyed the Malay peninsula (specifically Peninsular Malaysia and Singapore) to investigate the current distribution and genetic diversity of P. scutata. Six populations were found in Singapore, but only one in Peninsular Malaysia. Mitochondrial COI and 16S sequencing revealed that the Malaysian population shared a single haplotype of both genes with the Singapore populations (500 km distant). This low genetic diversity could stem from a recent anthropogenic introduction, which brings into question the true native range of P. scutata and, coupled with poorly resolved taxonomy of the genus, necessitates a reassessment of its IUCN Red List status. Introduced populations pose a dilemma, and the lack of genetic diversity is of concern in light of Pila decline throughout South-east Asia. Our results highlight that conservation management of P. scutata and its congeners must therefore be better informed by greater taxonomic resolution and more comprehensive investigations of their ecology, both in native and introduced ranges.

scholarly journals Begonia yenyeniae (Begoniaceae), a new species from Endau Rompin National Park, Johor, Malaysia

PhytoKeys ◽  
2018 ◽  
Vol 110 ◽  
pp. 23-37
Author(s):  
Joanne Pei-Chih Tan ◽  
Sheh May Tam ◽  
Ruth Kiew
Keyword(s):  
New Species ◽  
Native Species ◽  
National Park ◽  
Iucn Red List ◽  
Peninsular Malaysia ◽  
Red List ◽  
Similar Species ◽  
Iucn Red List Categories ◽  
Red List Categories ◽  
A New Species

Begoniayenyeniae is a new species of horticultural value known only from the Endau Rompin National Park, Peninsular Malaysia. It is similar to Begoniarajah with which it had previously been confused in the number of tepals and leaf characters. The new species is compared with three similar species, B.foxworthyi, B.rajah and B.reginula and photographs of all four species and descriptions of B.yenyeniae and B.rajah are provided. Molecular analysis using the ndhF-rpl132 chloroplast marker confirms the four species as distinct. Amongst native species, the three variegated species, B.yenyeniae, B.rajah and B.reginula, are some of the most popular Malaysian begonias in cultivation. Based on its restricted distribution, Begoniayenyeniae, under the IUCN Red List Categories and Criteria, is assessed as Critically Endangered.

Plant Conservation Status and Species Diversity of Hutan Lipur Jeram Linang, Kelantan

2019 ◽  
Vol 1 (4) ◽  
pp. 37-50
Author(s):  
Siti Mariam, M.N ◽  
Jivitra, B.
Keyword(s):  
Species Diversity ◽  
Vascular Plants ◽  
Dominant Species ◽  
Conservation Status ◽  
Plant Conservation ◽  
Iucn Red List ◽  
Peninsular Malaysia ◽  
Red List ◽  
Lowland Forest ◽  
Important Value Index

A study to determine plant species diversity and the conservation status of a hilly lowland forest of Hutan Lipur Jeram Linang in Kelantan was carried out within 0.1 ha plot. All vascular plants (except lianas and epiphytes) were enumerated and identified. A total of 255 taxa representing 121 species belonging to 87 genera in 47 families were identified.  Among these were 24 species endemic to Peninsular Malaysia and 47 species with medicinal values. Plants were categorized according to growth forms as follows: 67% trees, 17% shrubs, 7% palms, 6% herbs, and 3% ferns. Based on Important value index (IVI), Elateriospermum tapos, Goniothalamus umbrosus, and Monocarpia marginalis were the most dominant species whilst Rubiaceae, Arecaceae and Fabaceae were the three most diverse families. Species diversity was high based on the Shannon-Weiner index with the value of 4.38. In this study, two species from Dipterocarpaceae, which were Dipterocarpus grandiflorus and Shorea collina, were listed as Endangered (E) and Critically Endangered (CE) species respectively according to IUCN Red List. Information gained from this study showed that the forest harbored high plant diversity and endemism, so proper management is needed to protect and conserve this forest for sustainability and development.

scholarly journals Hanguana thailandica (Hanguanaceae): a new peat swamp forest species from Thailand

Phytotaxa ◽  
2016 ◽  
Vol 280 (2) ◽  
pp. 195 ◽  
Author(s):  
LAHIRU S. WIJEDASA ◽  
MATTI A. NIISSALO ◽  
VORADOL CHAMCHUMROOM ◽  
PACHOK PUUDJAA ◽  
THAVEECHOCK JUMRUSCHAY ◽  
...  
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Iucn Red List ◽  
Peninsular Malaysia ◽  
Red List ◽  
Forest Species ◽  
Swamp Forest ◽  
Peat Swamp Forest ◽  
Peat Swamp ◽  
A New Species

A new species of Hanguana (Hanguanaceae), H. thailandica, is described and illustrated from Trang province, Peninsular Thailand. This is the second Hanguana species recorded in Thailand, along with the widespread helophytic H. malayana. The species is morphologically similar to Hanguana exultans and H. nitens found in swamp forests habitats in southern Peninsular Malaysia and Singapore. The conservation status of this species is accessed as Endangered according to the IUCN Red List Category and Criteria.

scholarly journals First inland record of Bull shark Carcharhinus leucas (Müller & Henle, 1839) (Carcharhiniformes: Carcharhinidae) in Celebes, Indonesia

2020 ◽  
Vol 38 ◽  
pp. 12-17
Author(s):  
Veryl Hasan ◽  
Izzul Islam
Keyword(s):  
Migration Route ◽  
Breeding Ground ◽  
Single Specimen ◽  
Carcharhinus Leucas ◽  
Bull Shark ◽  
Local Fisherman

A single specimen (c. 86.2 cm) juvenile of Bull shark Carcharhinus leucas (Müller & Henle, 1839) was captured and photographed by local fisherman using a casting net on 13 February 2018 in Pangkajene River, about 16 km inland, Pangkajene District, South Celebes, Indonesia. This finding is considered as a first inland record of C. leucas in Celebes, and fourth inland records in Indonesia after Papua, Sumatra and Borneo. Monitoring is needed to asses the possibility of Celebes as a migration route and breeding ground of C. leucas.

scholarly journals Giant otter Pteronura brasiliensis density and abundance in Llanos Orientales de Colombia in the Orinoco basin

Oryx ◽  
2020 ◽  
pp. 1-4
Author(s):  
Germán Garrote ◽  
Beyker Castañeda ◽  
Jose Manuel Escobar ◽  
Laura Pérez ◽  
Brayan Marín ◽  
...  
Keyword(s):  
South America ◽  
Population Size ◽  
20Th Century ◽  
Conservation Status ◽  
Species Conservation ◽  
Iucn Red List ◽  
Red List ◽  
Recreational Fishing ◽  
Pteronura Brasiliensis ◽  
Direct Counts

Abstract The giant otter Pteronura brasiliensis, categorized as Endangered on the IUCN Red List, was once widely distributed throughout South America. By the middle of the 20th century the giant otter had become locally extinct along the main rivers of the Orinoco basin. Although some populations seem to have recovered, the paucity of information available does not permit a full evaluation of the species' conservation status. The objective of this study was to estimate the abundance and density of the giant otter population along the Orinoco river in the municipality of Puerto Carreño, Vichada, Colombia, where there is important commercial and recreational fishing. Thirty-nine linear km were surveyed, repeatedly, with a total of 315 km of surveys. Population size was estimated by direct counts of individuals. All individuals detected were photographed and identified individually from their throat pelage patterns. In total, 30 otters were identified, giving a minimum density of 0.77 individuals per km, one of the highest reported for the species in Colombia. Given the high density in this well-developed area, our results highlight the importance of this population for the conservation of the species.

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