SOME POPULATION PARAMETERS AND EXPLOITATION STATUS OF FOURFINGER THREADFIN (Eleutheronema tetradactylum Shaw, 1804) IN TARAKAN WATERS, NORTH KALIMANTAN

Abstract

Information on exploitation status of fourfinger threadfin (Eleutheronema tetradactylum Shaw, 1804) is important for sustainable gillnet fisheries management in Tarakan, North Kalimantan waters. In an attempt of providing scientific data and information on the exploitation status of this species, a research work was conducted from January to November 2016 in Selumit landing place. Fish sampling was done by trained enumerator on bottom gillnet catches landed through semi-regular observation. A total of 1964 specimens were collected and measured. The results showed that the size ranged between 16-70 cmFL with an average of 37.72 ± 0.36 cmFL. The length at first captured (Lc) of about 38.5 cmFL, was smaller than the length at first mature of female (Lm) of 39.6 cmFL. The growth pattern was negative allometry. By applying von Bertalanffy growth model, it was found that growth model for this species was L(t)=75,8(1-e0,3(t+0,035)). Exploitation rate (E) was 0,47. It showed that the exploitation status of fourfinger threadfin in Tarakan Waters was still sustainable.

Reproductive characteristics of the hermaphroditic four-finger threadfin, Eleutheronema tetradactylum (Shaw, 1804), in tropical coastal waters

“…It is slightly different from other areas viz. 20.11 cm TL for male from Australia [8], 31.10 cm FL for pooled sex from India[13] and 39.60 cm FL for pooled sex from Indonesia[11]. Hence, this study provides the rst report on the Lm 50 values for both male and female simultaneously.ConclusionThis study illustrates reproductive aspects of E. tetradactylum in the coastal waters of Thailand.…”

“…It is the target sh of sherman in many countries, including Thailand, with high value and demand for both local and international markets [10]. The shing gears used for capturing this sh include gillnet, beach seine, longline, trap and trawl [11].…”

“…Many studies had been conducted on biology and sheries of this sh including reproductive biology [9,11,12,13,14,15], population dynamics [11,16], aquaculture [17], taxonomy [4,5,6] and compositions of parasitic organisms [18,19]. However, most of the study on reproductive aspects are concentrated on a particular reproductive trait including length and weight relationship [11,12,13], fecundity [9,14], gonad histology [15], size at rst maturity [11], and size at the rst sex change [12]. Some studies reported also the spawning period of this sh.…”

The diversity of the Genus Panulirus trafficked through the Fish Quarantine Station Controlling the Quality and Safety of Fishery Products, Aceh Province

“…Panulirus polyphagus comes from Lamno waters. The distribution of Pakistani lobster is found in the Indonesian Pacific waters, Pakistan, India, Vietnam, Taiwan Province in China, the Philippines, Papua New Guinea, and northern Australia (Chan 1998); Mayalibit Bay, West Papua (Wahyudin 2017b); North Kalimantan Sebatik Waters (Chodrijah et al 2018); Sebatik Waters (Tirtadanu et al 2021). P. longipes (Figure 1d) originates from the waters of Lamno, Banda Aceh, Sabang Island, Meulaboh, Calang and Labuan Haji.…”

Spawning potential ratio of comercially important spiny lobster in Donggala Waters Central Sulawesi

“…Dari ketujuh spesies yang ada, beberapa diantaranya dilaporkan telah mengalami penangkapan berlebih di perairan Indonesia seperti P. homarus (Kembaren & Nurdin, 2015;Zairion et al, 2017), P. versicolor dan P. longipes (Tirtadanu et al, 2021a;Tirtadanu et al, 2021b) dan P. penicillatus (Beni et al, 2020).…”