Size Frequency, Length-Weight, and Length-Length Relationship of Bearded Worm Goby Taenioides cirratus (Blyth, 1860) fro
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Size Frequency, Length-Weight, and Length-Length Relationship of Bearded Worm Goby Taenioides cirratus (Blyth, 1860) from the Noakhali Coast, Bay of Bengal Mohammad Abdul Momin Siddique 1,2
&
Mahfuzur Rahman 1 & Najmus Sakib Khan 1 & Md. Mohidul Islam 3
Received: 30 January 2020 / Revised: 16 April 2020 / Accepted: 1 September 2020 # Springer Nature Switzerland AG 2020
Abstract Size frequency, length-weight relationships (LWRs), and length-length relationships (LLRs) for an estuarine fish Taenioides cirratus (Blyth, 1860) from the Noakhali coast, Bay of Bengal was studied. Specimens were caught with the fixed purse net of two mesh sizes (0.2 to 0.5 in. and 2.0 to 2.5 in.) from March to July 2019. The maximum total length for male T. cirratus (36.2 cm) reported in this study is a new record for this species. The length-weight relationships for male, female, and unsexed T. cirratus was highly significant (p < .001), and adjusted r2 values were 0.967, 0.922 and 0.955 for males, females, and unsexed, respectively. The calculated growth coefficient (b) for male, female, and unsexed T. cirratus was 2.546, 2.948, and 2.618, respectively. The length-length eq. TL = 1.1974 SL + 0.4403 for the males and TL = 1.1712 SL + 0.7096 for the females were highly significant (p = 0.001, r2 ≥ 0.978 for both males and females). Our estimated LWRs and LLRs parameters for male and female T. cirratus can be useful for the management and conservation purpose of this species. Keywords Gobiidae . Amblyopinae . Estuarine fish
Introduction Bearded worm goby Taenioides cirratus (Gobiidae: Amblyopinae) is widely distributed from offshore islands of east Africa to Australia and also reported from India, Japan, South Korea, New Guinea and New Caledonia (Froese and Pauly 2020). Although the consumption level of this species is very low globally, this goby is very popular in Bangladesh because of their distinct taste, lower price, and having fewer bones. T. cirratus is a mud-burrowing species that dig 2–8 m for making networks of sloping tunnels in the substrate, and apparently, each series of burrows has several openings, one * Mohammad Abdul Momin Siddique [email protected]; [email protected] 1
Department of Oceanography, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
2
Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in Ceske Budejovice, Zatisi 728/II, 389 25 Vodnany, Czech Republic
3
Marine Fisheries & Technology Station, Bangladesh Fisheries Research Institute, Cox’s Bazar 4700, Bangladesh
of which has a mound outside (Itani and Uchino 2003). T. cirratus invaded the Gaoyou Lake, China, in the 1980s, and then invaded and had become a common species to Luoma Lake in 2005 and Nansi Lake in 2011 (Qin et al. 2019). A few studies have been done on the distribution (Qin et al. 2019), feeding habits (Wu and Zhong 2008) and age, growth, and reproductive trai
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