Relative importance of ocean currents and fronts in population structures of marine fish: a lesson from the cryptic lineages of the Hippocampus mohnikei complex

Han, Sang-Yun; Kim, Jin-Koo; Tashiro, Fumihito; Kai, Yoshiaki; Yoo, Joon-Taek

doi:10.1007/s12526-017-0792-2

Cited by 10 publications

(7 citation statements)

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“…As a consequence of the reduction in salinity and drop in temperature associated with monsoonal precipitation and upwelling, respectively the seahorse populations might face limitations in growth and recruitment along the west coast of India. Interestingly, unlike most subtropical seahorse species, the greater tolerance by native populations of H. mohnikei to cold water in the Western Pacific has been reported [31]. However, further temperature stress simulation studies are required to ascertain whether geographically disconnected populations of H. mohnikei also possess a similar trait or not.…”

Section: Plos Onementioning

confidence: 97%

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

et al. 2020

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Accurate information of taxonomy and geographic range of seahorse species (genus Hippocampus) is the first step in preparing threat assessments and designing effective conservation measures. Here, we report first records and a range extension of the Japanese seahorse, Hippocampus mohnikei (Bleeker, 1853) from the Mandovi estuarine ecosystem of Goa, central west coast of India (CWCI) based on morphological and molecular analyses. The morphometric and meristic traits, particularly short snout (29-35% head length), double cheek spine, low coronet, long tail (51.2-57.9% of standard length), 11 trunk rings, 37-39 tail rings, 15-16 dorsal and 12-14 fin rays observed in four collected specimens matched with the reported key diagnostic morphological criteria of vouchered specimens of H. mohnikei. The seahorse mitochondrial cytochrome oxidase subunit I (COI) and cytochrome b (Cyt b) genes were partially sequenced for conclusive genetic identification of the species under study. Molecular analysis showed that all four individuals clustered together suggesting a monophyletic lineage. Using the maximum similarity with GenBank database, maximum likelihood network and subsequent morphological analysis, the identity of the collected seahorse species was reconfirmed as H. mohnikei. With this new report, the geographic range of H. mohnikei extended significantly to the west from its previously known range. This new sighting of H. mohnikei could indicate a long-distance dispersal facilitated by the prevailing oceanic circulation in the Indo-Pacific region or increased habitat suitability in bay-estuarine systems of Goa, CWCI. Comparison of the pair-wise genetic distances (Kimura 2-parameter) based on COI and Cyt b sequences revealed that the specimens examined in this study are genetically closer to H. mohnikei populations from Vietnam and Thailand than they are to those in Japan and China. To test the hypothesis whether H. mohnikei are vagrants or previously unreported established population, long-term inter-annual sampling and analyses are warranted. PLOS ONE PLOS ONE | https://doi.org/10.1371/journal.pone.0220420 March 24, 2020 1 / 22 OPEN ACCESS Citation: Sanaye SV, Khandeparker R, Rayadurga AS, Shivaramu MS, Kankonkar H, Narvekar J, et al. (2020) Morphological and molecular evidence for first records and range extension of the Japanese seahorse, Hippocampus mohnikei (Bleeker 1853) in a bay-estuarine system of Goa, central west coast of India. PLoS ONE 15(3): e0220420. https://

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Section: Plos Onementioning

confidence: 97%

“…Evidences of long-distance dispersal of seahorse species via rafting (floating debris and seaweeds) [2,12,30] and subsequent colonization [21] have also been documented. The role of oceanic currents facilitating long-distance dispersal and range expansion of many seahorse species has also been highlighted [31][32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2020

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“…The most important difference in species composition between the aquarium trade and the traditional medicine market is that the first is richer in species [133]. Rare species are absent in both markets, but some additional species have a low market value as dried specimens because they are generally too small, such as H. mohnikei, which is widespread in Asia [136][137][138]. Some species are rarely traded alive but commonly traded as dried specimens, such as H. trimaculatus, which occurs in the central Indo-Pacific [139] and is The most important difference in species composition between the aquarium trade and the traditional medicine market is that the first is richer in species [133].…”

Section: Hippocampus and Citesmentioning

confidence: 99%

Diversity of Seahorse Species (Hippocampus spp.) in the International Aquarium Trade

Koning

Hoeksema

2021

Diversity

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Seahorses (Hippocampus spp.) are threatened as a result of habitat degradation and overfishing. They have commercial value as traditional medicine, curio objects, and pets in the aquarium industry. There are 48 valid species, 27 of which are represented in the international aquarium trade. Most species in the aquarium industry are relatively large and were described early in the history of seahorse taxonomy. In 2002, seahorses became the first marine fishes for which the international trade became regulated by CITES (Convention for the International Trade in Endangered Species of Wild Fauna and Flora), with implementation in 2004. Since then, aquaculture has been developed to improve the sustainability of the seahorse trade. This review provides analyses of the roles of wild-caught and cultured individuals in the international aquarium trade of various Hippocampus species for the period 1997–2018. For all species, trade numbers declined after 2011. The proportion of cultured seahorses in the aquarium trade increased rapidly after their listing in CITES, although the industry is still struggling to produce large numbers of young in a cost-effective way, and its economic viability is technically challenging in terms of diet and disease. Whether seahorse aquaculture can benefit wild populations will largely depend on its capacity to provide an alternative livelihood for subsistence fishers in the source countries. For most species, CITES trade records of live animals in the aquarium industry started a few years earlier than those of dead bodies in the traditional medicine trade, despite the latter being 15 times higher in number. The use of DNA analysis in the species identification of seahorses has predominantly been applied to animals in the traditional medicine market, but not to the aquarium trade. Genetic tools have already been used in the description of new species and will also help to discover new species and in various other kinds of applications.

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“…Electronic supplementary material The online version of this article (https://doi.org/10.1007/s12526-020-01043-1) contains supplementary material, which is available to authorized users. mitochondrial markers such as mtCOI, have been used to identify cryptic species in numerous marine organisms, including copepods (Lee 2000;Rocha-Olivares et al 2001;Dawson and Jacobs 2001;Lee and Frost 2002;Caudill and Bucklin 2004;Holland et al 2004;Hare 2008, 2011;Johnson et al 2008;Dippenaar et al 2010;Marrone et al 2010;Blanco-Bercial et al 2014;Cornils and Held 2014;Oyama et al 2019;Govender et al 2019;Han et al 2019;Hupało et al 2019;Figueroa et al 2019;Chan et al 2019). A comprehensive review of DNA barcoding of copepods based on mtCOI is presented by Blanco-Bercial et al (2014), where they show that this marker was able to accurately identify to species level 1381 sequences for 195 species of copepods, showcasing the utility of this marker for taxonomic research.…”

Section: Communicated By R R Hopcroftmentioning

confidence: 99%

Phylogeography of Acartia tonsa Dana, 1849 (Calanoida: Copepoda) and phylogenetic reconstruction of the genus Acartia Dana, 1846

Figueroa

Hicks

2020

Mar. Biodivers.

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The calanoid copepod, Acartia tonsa Dana, 1849 is one of the most abundant and well-studied estuarian species with a worldwide distribution. In this research, we use the mitochondrial cytochrome oxidase subunit I gene to study the phylogeography of A. tonsa by analyzing sequences from specimens collected in the western Gulf of Mexico (GOM) along with all sequences from previous research. We reconstruct the phylogeny for the genus Acartia Dana, 1846 and highlight numerous potential misidentifications of Acartia species deposited in GenBank. The incorrect taxonomy assigned to some of these sequences results in apparently paraphyletic relationships. This study demonstrates that A. tonsa is a species complex with multiple, deeply diverging, lineages of varying geographic affinities. Multiple new lineages are found in the Texas GOM that is basal to northwestern Atlantic lineages with phylogenetic connectivity also observed between Brazil and the Texas GOM. Results show two major phylogeographic breaks in the North American continent, one at the border between the Gulf of Mexico and the Northwest Atlantic, and the other at about 35°N. One of the major clades in the A. tonsa species complex shows a clear pattern of divergence that follows the prevailing currents. Within this clade, older lineages are found in the western GOM while newer lineages are found in the eastern GOM and the southern coast of the northwest Atlantic, with the youngest lineages diversifying in the north. The results show that A. tonsa can be used as a model species for observing phylogeographical structuring of coastal plankton along the American continent.

show abstract

Relative importance of ocean currents and fronts in population structures of marine fish: a lesson from the cryptic lineages of the Hippocampus mohnikei complex

Cited by 10 publications

References 50 publications

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

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

Diversity of Seahorse Species (Hippocampus spp.) in the International Aquarium Trade

Phylogeography of Acartia tonsa Dana, 1849 (Calanoida: Copepoda) and phylogenetic reconstruction of the genus Acartia Dana, 1846

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