Rediscovering Halophila major (Zollinger) Miquel (1855) in Indonesia

Kurniawan, Fery; Imran, Zulhamsyah; Darus, Robba Fahrisy; Anggraeni, Fitriyah; Damar, Ario; Sunuddin, Adriani; Kamal, Mohammad Mukhlis; Pratiwi, Niken Tunjung Murti; Ayu, Inna Puspa; Iswantari, Aliati

doi:10.1016/j.aquabot.2019.103171

Cited by 14 publications

(10 citation statements)

References 12 publications

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“…Sample information is presented in S1 Table . Voucher specimens were deposited in the Institute of Oceanography (ION), Nha Trang City, Viet Nam. Specimens were identified using the keys of den Hartog [31], Kuo [4], Kuo et al [6] and Kurniawan et al [10]. The morphological characters used for measurements were cross veins (CV), branching cross veins (BCV), space between cross veins (SC), the angle between cross veins and midveins (AG), leaf width (LW), and leaf length (LL).…”

Section: Sampling and Species Identificationmentioning

confidence: 99%

“…Halophila major differs from closely related species by two main characteristics, the number of cross veins and the ratio of the distance between the intramarginal vein, with the lamina margin at the half-way point along the leaf length [6]. The species commonly occurs in Sri Lanka [7] Japan [8], Australia [8,9], Southeast Asian countries such as Indonesia [10], Philippines [11], Malaysia, Myanmar [12] and Thailand [8]. In Viet Nam, H. major was misidentified as H. ovalis in the off-shore islands from Nha Trang Bay [13].…”

Section: Introductionmentioning

confidence: 99%

“…Among the markers applied, the nuclear ribosomal internal transcribed spacer (ITS1-5.8S-ITS2) region was used to identify H. ovalis and closely related species, and species resolution was higher than by the analysis of the concatenated sequences of genes encoding the large subunit of ribulose-1,5-bisphosphate-carboxylase-oxygenase (rbcL) and chloroplast maturase K (matK) [14]. Kurniawan et al [10] found that H. major populations in Indonesia seem to split into two groups based on the ITS marker. In addition, the study of Tuntiprapas et al [15] revealed four different haplotypes of H. major within the Andaman Sea based on the ITS marker.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of rDNA reveals a high genetic diversity of Halophila major in the Wallacea region

et al. 2021

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The genus Halophila shows the highest species diversity within the seagrass genera. Southeast Asian countries where several boundary lines exist were considered as the origin of seagrasses. We hypothesize that the boundary lines, such as Wallace’s and Lydekker’s Lines, may act as marine geographic barriers to the population structure of Halophila major. Seagrass samples were collected at three islands in Vietnamese waters and analyzed by the molecular maker ITS. These sequences were compared with published ITS sequences from seagrasses collected in the whole region of interest. In this study, we reveal the haplotype and nucleotide diversity, linking population genetics, phylogeography, phylogenetics and estimation of relative divergence times of H. major and other members of the Halophila genus. The morphological characters show variation. The results of the ITS marker analysis reveal smaller groups of H. major from Myanmar, Shoalwater Bay (Australia) and Okinawa (Japan) with high supporting values. The remaining groups including Sri Lanka, Viet Nam, the Philippines, Thailand, Malaysia, Indonesia, Two Peoples Bay (Australia) and Tokushima (Japan) showed low supporting values. The Wallacea region shows the highest haplotype and also nucleotide diversity. Non-significant differences were found among regions, but significant differences were presented among populations. The relative divergence times between some members of section Halophila were estimated 2.15–6.64 Mya.

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Section: Sampling and Species Identificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of rDNA reveals a high genetic diversity of Halophila major in the Wallacea region

et al. 2021

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“…Seagrasses in the Indo-Pacific waters are found in intertidal and subtidal areas with 24 species of seagrass having been identified so far (Short et al 2007). Fourteen species of seagrasses occur in Indonesian waters, including Cymodocea rotundata, C. serrulata, Enhalus acoroides, Halodule pinifolia, Halodule uninervis, Halophila decipiens, H. minor, H. ovalis, H. spinulosa, H. sulawesii, H major, Syringodium isoetifolium, Thalassia hemprichii, and Thalassodendron ciliatum, while 2 species are found in the herbarium collections, namely H. beccarii and Ruppia maritima (Sjafrie et al 2018;Kurniawan et al 2020). Until 2017, the area of seagrass beds in Indonesian waters had an extent of 293.464 hectares (Sjafrie et al 2018) with most of them in moderate condition (Hernawan et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Diversity, coverage, distribution and ecosystem services of seagrass in three small islands of northern Papua, Indonesia: Liki Island, Meossu Island and Befondi Island

Nugraha

Tasabaramo

Hernawan³

et al. 2021

Biodiversitas

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Nugraha AH, Tasabaramo IA, Hernawan UE, Rahmawati S, Putra RD, Darus RF. 2021. Diversity, coverage, distribution and ecosystem services of seagrass in three small islands of northern Papua, Indonesia: Liki Island, Meossu Island and Befondi Island. Biodiversitas 22: 5544-5549. Papua waters are one of the hot spot areas with high marine biodiversity in the world. Yet, the less accessible location and varying geographical conditions become the significant constraints of biodiversity study in this region, resulting in limited information about the diversity of marine resources, including the seagrass ecosystem. This research aims to investigate the diversity, coverage and distribution of seagrass in three small islands in the northern waters of Papua, namely Liki Island, Befondi Island, and Meossu Island, as well as to study the ecosystem services provided by the seagrass. This research is part of the Nusa Manggala Expedition, which was carried out in November 2018, consisted of seven observation stations. Data collection was conducted using the transect line method combined with plot quadrat. Information regarding seagrass ecosystem services was gathered through observation and direct interviews to the community. The results showed that there were seven species of seagrass in the studied sites, namely Cymodocea rotundata, Enhalus acoroides, Halodule uninervis, Halodule pinifolia, Halophila ovalis, Thalassia hemprichii, and Syringodium isoetifolium. Liki Island had the highest seagrass cover value of 82.24%, followed by Meossu Island and Befondi Island with seagrass cover of 63.23% and 31.25%, respectively. There were 13 seagrass ecosystem services identified in this research. The people of Liki Island and Meossu Island get the benefits of the existence of the seagrass ecosystem. The direct benefits are the presence of seagrass is associated with biota commonly used as food sources such as Siganus sp and sea cucumbers. There are efforts made by the community to maintain the sustainability of the seagrass ecosystem, which is known as sasi.

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“…However, identification based on morphological traits in the genus Halophila is considered to be very challenging since few morphological differences or characteristics exist among closely related species (Kuo et al, 2006). Field ecologists without taxonomic knowledge of this genus may either overestimate or underestimate its true biodiversity (Shimada et al, 2012;Tuntiprapas et al, 2015;Kurniawan et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Genetic identification and hybridization in the seagrass genusHalophila(Hydrocharitaceae) in Sri Lankan waters

Liu

Kumara

Hsu

2020

PeerJ

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Seagrasses, as marine angiosperms, play important roles in coastal ecosystems. With increasing anthropogenic impacts, they are facing dramatic declines on a global scale. Halophila is well-known as a complex taxonomic challenge mainly due to high morphological plasticity. By using only a morphological approach, the genus could be over-split or similar species could be erroneously lumped, thus masking its true biodiversity. In the present study, we incorporated genetic identification with morphological examination to reveal the identity of Halophila plants in southern and northwestern Sri Lankan waters. The nuclear ribosomal internal transcribed spacer (ITS) region and chloroplast ribulose-bisphosphate carboxylase gene (rbcL) were used to identify plants collected from the Gulf of Mannar, Puttalam Lagoon, and Matara, Sri Lanka. Based on genetic identification, H. major (Zoll.) Miquel is reported for the first time from Sri Lanka, which might have been misidentified as H. ovalis in previous literature based on morphology alone. We also observed a first hybridization case of Halophila cross between H. ovalis and H. major. Two potential cryptic species were found, herein designated Halophila sp. 1 (allied to H. minor) and Halophila sp. 2 (closely related to H. decipiens). In order to clarify taxonomic ambiguity caused by morphological plasticity and the low resolution of genetic markers, further comparative phylogenomic approaches might be needed to solve species boundary issues in this genus.

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Rediscovering Halophila major (Zollinger) Miquel (1855) in Indonesia

Cited by 14 publications

References 12 publications

Analysis of rDNA reveals a high genetic diversity of Halophila major in the Wallacea region

Analysis of rDNA reveals a high genetic diversity of Halophila major in the Wallacea region

Diversity, coverage, distribution and ecosystem services of seagrass in three small islands of northern Papua, Indonesia: Liki Island, Meossu Island and Befondi Island

Genetic identification and hybridization in the seagrass genusHalophila(Hydrocharitaceae) in Sri Lankan waters

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