Iranian Branchiostoma species (Cephalochordata, Branchiostomatidae) inhabiting Chabahar Bay (Gulf of Oman), with remarks on habitat preferences

Variations in the population of lancelets inhabiting Chabahar Bay were surveyed statistically. Multivariate analysis of the Iranian Branchiostoma population using 5 morphometric characteristics indicates no separation of populations by locality in the study area (ANOSIM global; R = 0.2). Principal component analysis of the mean values of the 5 meristic characteristics of the present population with those of conspecifics of other populations around the world showed that Iranian lancelet populations are very similar to B. lanceolatum and completely different from the B. arabia and B. belcheri previously reported in adjacent waters (ANOSIM for pairwise tests; R = 1). Cluster analysis indicates that the Iranian B. lanceolatum shows greater affinity with its conspecifics in the Mediterranean than in the Indian Ocean. The distribution of lancelet populations correlates more closely with sand particles; however, this correlation was not significant (P = 0.28). The novel aspect of this study is the information presented about B. lanceolatum populations in the Iranian Gulf of Oman and its greater affinity with the species reported with Mediterranean conspecifics.

Keywords:

Lancelets, identification, Makran Sea Branchiostoma lanceolatum,

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Babu A, Sampathkumar P, Balasubramanian T, Varadharajan D, Manikandarajan T (2013). Distribution and abundance of amphioxus with relation to sediment characteristics from south east coast of India. J Marine Sci Res Dev 3: 121-130.
Bertrand S, Escriva H (2011). Evolutionary crossroads in developmental biology: amphioxus. Development 138: 4819- 4830.
Chen Y, Shin PKS, Cheung SG (2008). Growth, secondary production and gonad development of two co-existing amphioxus species (Branchiostoma belcheri and B. malayanum) in subtropical Hong Kong. J Exp Mar Biol Ecol 357: 64-74.
Da Silva LF, Tavares M, Soares-Gomes A (2008). Population structure of the lancelet Branchiostoma caribaeum (Cephalochordata: Branchiostomidae) in the Baía de Guanabara, Rio de Janeiro, southeastern Brazil. Rev Bras Zool 25: 617-623.
Dawson CE (1964). Records of Cephalochordata from the western Persian Gulf. Copeia 1964: 229.
Fuentes M, Benito E, Bertrand S, Paris M, Mignardot A, Godoy L, Jimenez-Delgado S, Oliveri D, Candiani S, Hirsinger E et al. (2007). Insights into spawning behavior and development of the European amphioxus (Branchiostoma lanceolatum). J Exp Zool 308B: 484-493.
Futch CR, Dwinell SE (1977). Nearshore marine ecology at Hutchinson Island, Florida: 1971–1974: IV. Lancelets and fishes. Florida Marine Research Publications, 24. St. Petersburg, FL, USA: Florida Department of Natural Resources, Marine Research Laboratory.
Heiri O, Lotter AF, Lemcke G (2001). Loss on ignition as a method for estimating organic and carbonate content in sediments: reproducibility and comparability of results. J Paleolimnol 25: 101-110.
Kon T, Nohara M, Yamanoue Y, Fujiwara Y, Nishida M, Nishikawa T (2007). Phylogenetic position of a whale-fall lancelet (Cephalochordata) inferred from whole mitochondrial genome sequences. BMC Evol Biol 7: 127-132.
Laudien J, Rojo M, Oliva M, Arntz W, Thatje S (2007). Sublittoral soft bottom communities and diversity of Mejillones Bay in northern Chile (Humboldt Current upwelling system). Helgoland Mar Res 61: 103-116.
Lin HC, Chen JP, Chan BK, Shao KT (2015). The interplay of sediment characteristics, depth, water temperature, and ocean currents shaping the biogeography of lancelets (Subphylum Cephalochordata) in the NW Pacific waters. Marine Ecology 36: 780-793.
Meerhoff E, Veliz D, Vega-Retter C, Yannicelli B (2016). The amphioxus Epigonichthys maldivensis (Forster Cooper, 1903) (Cephalochordata Branchiostomatidae) larvae in the plankton from Rapa Nui (Chile) and ecological implications. Biodiversity Journal 7: 7-10.
Nishikawa T (2004). A new deep-water lancelet (Cephalochordata) from off Cape Nomamisaki, SW Japan, with a proposal of the revised system recovering the Genus Asymmetron. Zool Sci 21: 1131-1136.
Poss SG, Boschung HT (1996). Lancelets (Cephalochordata: Branchiostomatidae): how many species are valid? Isr J Zool 42: S13-S66.
Rota E, Perra G, Focardi S (2009). The European lancelet Branchiostoma lanceolatum (Pallas) as an indicator of environmental quality of Tuscan Archipelago (Western Mediterranean Sea). Chem Ecol 25: 61-69.
Schubert M, Escriva H, Xavier-Neto J, Laudet V (2006). Amphioxus and tunicates as evolutionary model systems. Trends Ecol Evol 21: 269-277.
Shirinmanesh S, Chegini V (2014). Tidal energy extraction in Chabahar Bay. Geosciences 24: 47-52. Webb JE (1955). On the lancelets of West Africa. P Zool Soc Lond 125: 421-443.
Webb JE (1957). Cephalochordata. John Murray Expeditions 1933– 34. Scientific Reports. London, UK: British Museum (Natural History).
Webb JE (1971). Seasonal changes in the distribution of Branchiostoma lanceolatum (Pallas) at Helgoland. Vie Milieu 22: 827-839.
Wickstead JH (1975). Chordata: Acrania (Cephalochordata). In: Giese AC and Pearse JS, editors Reproduction of Marine Invertebrates. Vol. II. Entoprocts and Lesser Coelomates. New York, NY, USA: Academic Press, pp. 283-319.
Yasui K, Urata M, Yamaguchi N, Ueda H, Henmi Y (2007). Laboratory culture of the oriental lancelet Branchiostoma belcheri. Zool Sci 24: 514-520.
Zhang QJ, Zhong J, Fang SH, Wang YQ (2006). Branchiostoma japonicum and B. belcheri are distinct lancelets (Cephalochordata) in Xiamen waters in China. Zool Sci 23: 573-579.