Direct observation of drifting juvenile seahorse Hippocampus trimaculatus (Leach, 1814) beneath the offshore surface at Malacca Strait

Wong, Nur Leena W. S.; Teh, Jun Chin

doi:10.15560/13.6.993

Cited by 4 publications

(4 citation statements)

References 13 publications

(18 reference statements)

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“…Since the H:S ratio in this study was also similar to that reported in H. kuda adults (Lourie et al, 2004;Choo and Liew, 2006), it reaffirms the ratio as being species-specific. These morphometric data could aid in the conservation management and identification of wild drifting seahorse species at juvenile stages (Vincent et al, 2011;Luzzatto et al, 2013;Wong and Teh, 2017).…”

Section: Resultsmentioning

confidence: 99%

External and internal morphology, and feeding ability of yellow seahorse Hippocampus kuda (Bleeker, 1852) early juveniles

Kamarudin¹,

Romano²,

Arshad³

et al. 2020

JEB

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Section: Resultsmentioning

confidence: 99%

External and internal morphology, and feeding ability of yellow seahorse Hippocampus kuda (Bleeker, 1852) early juveniles

Kamarudin¹,

Romano²,

Arshad³

et al. 2020

JEB

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“…Sand bottom is the preferable habitat for these species, with H. spinosissimus commonly associated with soft corals (Lim et al, 2011;Shapawi et al, 2015). In 2017, H. trimaculatus was observed drifting near the water surface of Port Dickson (Negeri Sembilan), indicating translocation and long-distance dispersal from deeper areas and demersal habitats (Wong and Teh, 2017).…”

Section: Habitat and Distribution Of Seahorses In Malaysiamentioning

confidence: 99%

“…Since then, aquaculture has been developed to ensure the sustainability of the seahorse trade (Job, 2005). VU Liew (2003, 2004), Lim et al (2011), Wong and Teh (2017) IUCN status: LC = Least concern, DD = Data deficient, VU = Vulnerable Morphology description referring to Lourie et al (2004), Lourie and Kuiter (2008) The proportion of cultured seahorses in the aquarium trade increased rapidly after their listing in CITES. However, the industry is still struggling to produce adequate numbers of juveniles for farming.…”

Section: Conservationmentioning

confidence: 99%

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Distribution of seahorse species in Malaysia, harvesting trends and conservation concerns – A review

Chen¹,

Halid²,

Lim³

et al. 2021

Borneo J. Mar. Sci. Aqua

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Seahorse is a unique fish belonging to the genus Hippocampus. It has a horse-like head, tubular mouth, and the body is covered with rings of armoured plates until the tip of the prehensile tail. Seahorses are traded for human consumption and ornamental purposes. However, the dry product of seahorses has a major demand for traditional Chinese medicine (TCM). The ornamental products such as keychains, earrings and brooches also support a growing ‘curio’ trade. There is a limited amount of published data on seahorse distribution in Malaysia despite increasing pressure of exploitation, this study was carried out to review the available information, identify knowledge gaps and draw attention towards sustainability of the seahorse populations. To date, twelve seahorse species have been reported in Malaysia. Most of these species are found in East Malaysia. In Sabah, 11 out of 12 tropical seahorse species have been encountered. This does not include the Japanese dwarf seahorse, Hippocampus mohnikei. Among the eleven species of seahorses found in Sabah are seven species of common size seahorses, H. barbouri, H. comes, H. histrix, H. kelloggi, H. kuda, H. spinosissimus and H. trimaculatus and four species of pygmy seahorses, H. bargibanti, H. denise, H. satomiae and H. pontohi, that were previously identified as H. severnsi. This study highlights the importance of conservation of wild population of seahorses and the need for farming as a means of lessening the exploitation of wild stocks while meeting the human demand.

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Morphological and molecular evidence for range extension and first occurrence of the Japanese seahorse,Hippocampus mohnikei(Bleeker 1853) in a bay-estuarine system of Goa, central west coast of India

Sanaye

Khandeparker

Sreepada

et al. 2019

Preprint

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27Accurate information of taxonomy and geographic range of seahorse species (genus 28 Hippocampus) is the first step in preparing threat assessments and designing effective 29 conservation measures. Here, we report the range expansion and first occurrence of the 30 Japanese seahorse, Hippocampus mohnikei (Bleeker, 1853) from the Mandovi estuarine 31 ecosystem of Goa, central west coast of India (CWCI) based on morpho-molecular analyses. 32 The morphometric and meristic traits particularly, short snout (29-35% head length), double 33 cheek spine, low coronet and long tail (51.2-57.9% of standard length), 11 trunk rings, 37-39 34 tail rings, 15-16 dorsal and 12-14 fin rays observed in four collected specimens matched 35 with the reported key diagnostic morphological criteria of vouchered specimens of H. 36 mohnikei. The seahorse mitochondrial cytochrome oxidase subunit I (COI) and cytochrome b 37 (Cyt b) genes were partially sequenced for conclusive genetic identification of the species 38 under study. Molecular analysis showed that all four individuals of seahorse species clustered 39 together suggesting a monophyletic lineage. Using the maximum similarity with GenBank 40 database, maximum likelihood network and subsequent morphological analysis, the identity 41 of the collected seahorse species was reconfirmed as H. mohnikei. With this new report, the 42 geographic range of H. mohnikei extended significantly to the westward side from its 43 previously known range. This new sighting of H. mohnikei could indicate a long-distance 44 dispersal facilitated by due to prevailing oceanic circulation in the Indo-Pacific region or 45 increased habitat suitability in bay-estuarine systems of Goa, CWCI. Comparison of the pair-46 wise genetic distances (Kimura 2-parameter) based on COI and Cyt b sequences revealed that 47 whether H. mohnikei are vagrants or previously unreported established population, long-term 50 inter-annual sampling and analyses are warranted. 51 52 53 Seahorses (Syngnathiformes; Syngnathidae) belonging to the single genus, Hippocampus 54 (Rafinesque, 1810) are a fascinating and remarkable group of fishes with their unusual body 55 shape and their biology, with males incubating the fertilized eggs in a brood pouch [1]. They 56 are small, cryptic, and sedentary marine fishes that occur worldwide in shallow temperate to 57 tropical waters in a wide variety of habitats, including seagrass beds, estuaries, coral and 58 rocky reefs and mangroves [2−4]. Their remarkable ability to camouflage with structurally 59 complex habitats further reduces the risk of predation [5], while providing stealth for prey 60 capture [6]. However, these biological traits often also make them unnoticeable from coastal 61 habitat. Due to their cryptic nature, their ability to camouflage and the sparse distribution, 62 seahorses become almost unnoticeable and thus restricting the biologists for their 63 identification in dense coastal marine habitats. 64The primary step in preparing threat assessments and designing effective conserva...

show abstract

Direct observation of drifting juvenile seahorse Hippocampus trimaculatus (Leach, 1814) beneath the offshore surface at Malacca Strait

Cited by 4 publications

References 13 publications

External and internal morphology, and feeding ability of yellow seahorse Hippocampus kuda (Bleeker, 1852) early juveniles

External and internal morphology, and feeding ability of yellow seahorse Hippocampus kuda (Bleeker, 1852) early juveniles

Distribution of seahorse species in Malaysia, harvesting trends and conservation concerns – A review

Morphological and molecular evidence for range extension and first occurrence of the Japanese seahorse,Hippocampus mohnikei(Bleeker 1853) in a bay-estuarine system of Goa, central west coast of India

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