Biogeographic distribution of the eel Anguilla luzonensis

Dependence upon larval duration and oceanic currents

Yu San Han, Yong Fu Lin, Chau-Ron Wu, Yoshiyuki Iizuka, Tersa R. Castillo, Irene U. Yambot, MacMod D. Mamalangkap, Apolinario V. Yambot

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Anguilla luzonensis, a recently identified tropical Anguilla species, was categorized as 'Near Threatened' in the International Union for Conservation of Nature (IUCN) Red List in 2014. However, its biogeographic distribution and dispersal mechanism remain unconfirmed. This study aimed to clarify the biotic and abiotic factors that may shape the eel's dispersal range, which could help to establish suitable conservation strategies. Glass eel distribution was investigated in Taiwan, Luzon, Mindanao, and Sulawesi. A. marmorata was used as a reference eel species for comparison. Although both species were found year-round, A. marmorata was found in all locations and was abundant at most sites. However, A. luzonensis was concentrated only on Luzon Island, mainly between June and October. It was rarely observed in Taiwan and Mindanao, and was not found in Sulawesi. The spawning site of A. luzonensis is probably located more northward in the North Equatorial Current (NEC), whereby the eel larvae avoid entering the Mindanao Current (MC). In addition, A. luzonensis typically spawns between February and May, and is preferentially transported into the Kuroshio from May to August, when the NEC bifurcation latitude reaches its southernmost position and the Kuroshio transport volume peaks. Furthermore, A. luzonensis has a shorter/narrower range of larval duration than A. marmorata, and its dispersal distance is therefore restricted. The life history traits of A. luzonensis, together with the oceanic current regime, may act together to concentrate its biogeographic distribution on Luzon Island.

Original languageEnglish
Pages (from-to)227-238
Number of pages12
JournalMarine Ecology Progress Series
Volume551
DOIs
Publication statusPublished - 2016 Jun 9

Fingerprint

Anguilla (eels)
oceanic current
eel
duration
Indonesia
Taiwan
natural resources conservation
volume transport
Red List
biotic factor
glass
bifurcation
concentrates
spawning
life history trait
life history
environmental factors
larva
distribution

Keywords

  • Anguilla luzonensis
  • Anguilla marmorata
  • Biogeography
  • Fish larvae
  • Oceanic current
  • Spawning ground

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science
  • Ecology

Cite this

Biogeographic distribution of the eel Anguilla luzonensis : Dependence upon larval duration and oceanic currents. / Han, Yu San; Lin, Yong Fu; Wu, Chau-Ron; Iizuka, Yoshiyuki; Castillo, Tersa R.; Yambot, Irene U.; Mamalangkap, MacMod D.; Yambot, Apolinario V.

In: Marine Ecology Progress Series, Vol. 551, 09.06.2016, p. 227-238.

Research output: Contribution to journalArticle

Han, Yu San ; Lin, Yong Fu ; Wu, Chau-Ron ; Iizuka, Yoshiyuki ; Castillo, Tersa R. ; Yambot, Irene U. ; Mamalangkap, MacMod D. ; Yambot, Apolinario V. / Biogeographic distribution of the eel Anguilla luzonensis : Dependence upon larval duration and oceanic currents. In: Marine Ecology Progress Series. 2016 ; Vol. 551. pp. 227-238.
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abstract = "Anguilla luzonensis, a recently identified tropical Anguilla species, was categorized as 'Near Threatened' in the International Union for Conservation of Nature (IUCN) Red List in 2014. However, its biogeographic distribution and dispersal mechanism remain unconfirmed. This study aimed to clarify the biotic and abiotic factors that may shape the eel's dispersal range, which could help to establish suitable conservation strategies. Glass eel distribution was investigated in Taiwan, Luzon, Mindanao, and Sulawesi. A. marmorata was used as a reference eel species for comparison. Although both species were found year-round, A. marmorata was found in all locations and was abundant at most sites. However, A. luzonensis was concentrated only on Luzon Island, mainly between June and October. It was rarely observed in Taiwan and Mindanao, and was not found in Sulawesi. The spawning site of A. luzonensis is probably located more northward in the North Equatorial Current (NEC), whereby the eel larvae avoid entering the Mindanao Current (MC). In addition, A. luzonensis typically spawns between February and May, and is preferentially transported into the Kuroshio from May to August, when the NEC bifurcation latitude reaches its southernmost position and the Kuroshio transport volume peaks. Furthermore, A. luzonensis has a shorter/narrower range of larval duration than A. marmorata, and its dispersal distance is therefore restricted. The life history traits of A. luzonensis, together with the oceanic current regime, may act together to concentrate its biogeographic distribution on Luzon Island.",
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