Length–weight dating and you may standing points away from mullets Liza macrolepis and Moolgarda engeli (Pisces: Mugilidae) harvested from Lambada Lhok waters when you look at the Aceh Besar, Indonesia
You will find modified the new papers predicated on reviewer statements and recommendations. Brand new terminology of rainy season has changed with the moist seasons. Five most cutting edge records was set in help the brand new discussion.
Introduction
Mullets (Mugilidae) portray a family of euryhaline fish that can put up with a broad selection of salinity step 1,2 . This fish can be included in marine surroundings, brackish and fresh water 2–seven . Thus far, all in all, 31 genus belonging to 78 species of mullets was discussed around the globe 8,9 . A total of 21 types of mullets was in fact advertised for the Indonesian oceans, and you may included in this, four variety had been filed from the seas away from Aceh province; these are Liza melinoptera, Mugil chepalus, Valamugil cunnesius, and you may V. speigleri 4,ten,eleven . Our very own earlier analysis filed three additional mullets away from Aceh waters, namely, L. macrolepis, Crenimugil crenilapis, and you may Moolgarda engeli (Yulianto, thesis in preparation), and this taken into account a total of eight species of mullets in new Aceh region. This type of extra varieties are commonly found in Lambada Lhok, Aceh Besar district near to Banda Aceh Town, the administrative centre from Aceh province, Indonesia. More over, our very own industry observance showed that L. macrolepis and you may Meters. engeli was basically the predominant varieties certainly one of other mullets in this area.
This new seaside section of Lambada Lhok features an excellent mangrove forest; but not, new forest town has been notably , land sales getting payment and aquaculture ponds. Others prospective dangers try toxic contamination out of residential waste, angling vent, and tourist affairs 12,13 . Mullets is a types of shoaling and you will schooling fish are not discover in the river mouths for serving 14,fifteen , which then after that move to help you deep waters to possess spawning 16 . Hence, this type of seafood is actually very subject to contact with toxic contamination out of seaside areas; as an example, Chelon subviridis off Donan Lake estuary, Central Java, was basically contaminated from the cadmium and you may copper 17 . An equivalent interested in could have been stated within the M. cephalus on Ligurian Sea inside Italy 18 . At exactly the same time, L. macrolepis and Meters. engeli was indeed gathered intensively by local anglers, and so raising the tension in these seafood. Thus, look pertaining to bioecology as basic data is very important inside the believed a great maintenance means.
The research of the LWRs and updates points was preferred and that is for this reason commonly conducted by the fish biologists 19 . The latest expectations out of LWRs investigation should be dictate the particular pounds and you may length differences regarding seafood directly and/or populace a whole to choose the ages, being obese position, health, productivity, and physiological requirements, as well as gonadal creativity 20,21 . LWRs data is even beneficial to estimate the fresh fish updates otherwise plumpness index, which is a significant variable regarding investigations of your wellness standards from seafood communities or individuals twenty-two–24 . The issue factor means the brand new biological and you can bodily requirements out of fish as well as motion of the interaction certainly one of eating standing, food supplies, and you can parasite infestation twenty-five–27 .
Numerous degree to your LWRs and you may position factor regarding mullets were conducted, for example, one towards M. dussumieri for the Ujung Pangkah, East Jawa, Indonesia fourteen ; towards the LWRs from inside the L. macrolepis off Indian oceans twenty eight,29 , and on L. macrolepis regarding Taiwanese seas 30 . On top of that, the study out of LWRs in several species of mullets inside Aceh oceans, Indonesia might have been claimed from the Mulfizar ainsi que al. 30 when you look at the M. chepalus on oceans away from Kuala Gigieng, Aceh Besar, and by Muttaqin mais aussi al. 32 in identical variety out of Madat waters into the Eastern Aceh. Yet not, zero analysis could have been authored with the L. macrolepis and you will Meters. engeli. Hence, the latest expectations of one’s introduce study should be become familiar with LWRs and you will updates factor of these two brand of mullet harvested from Lambada Lhok waters.
