Biology characteristic, abundance index and fishing aspect of donkey croaker (Pennahia aneaBloch, 1793) in the Tangerang Waters

Karsono Wagiyo,Umi Chodriyah,Tirtadanu Tirtadanu,B Semedi

doi:10.1051/e3sconf/202015301011

Karsono Wagiyo, Umi Chodriyah + Show 2 more

Open Access

https://doi.org/10.1051/e3sconf/202015301011

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Abstract

Pennahia aneain Tangerang waters have a fork length between 9.4 and 23 cm, with an average of 18.9 cm and modus 18-18.5 cm. Growth type is isometric with correlation R2= 0.7266 and b = 3.2251. The sex ratio of female: male = 1: 0.9. Level and index maturity of gonad are highest in February and lowest in March.The length first maturity of donkey croaker at 15.8 cmFL. The length of the first capture (Lc) by danish seine net at 16,76 cmFL and by gill net at 17.60 cmFL. Asymptotic length (L∞) at 23.89 cmFL and growth rate (K) = 0.84 per year. Mortality rate; total (Z) = 4.01, natural (M) = 1.73/year and by fishing (F) = 2.28/year. Exploitation rate (E) of donkey croaker fish is 0.57. CPUE the smallest in July was 0.41 kg/trip/day, the largest was in June 9 kg/trip/day, averaging 3.3 kg/trip/day. The fishing season from July to January with its peak in November and the famine season occurs in February-June with a peak in February. The main fishing gear for catching donkey croaker fish in the Tangerang waters is the danish seine net. The highest production of donkey croaker fish in June.

Highlights

Donkey croaker (Pennahia anea) is one of five species in the genus Pennahia, a member of the Sciaenidae [1, 2]
Donkey croaker is similar in various locations as other members in the Sciaenidae have similar morphological and synonym names [3]
The name of the croaker is because it makes a hoarse noise which comes from the swimming bubble vibrations [4]

Summary

Introduction

Donkey croaker (Pennahia anea) is one of five species in the genus Pennahia, a member of the Sciaenidae [1, 2]. Donkey croaker is similar in various locations as other members in the Sciaenidae have similar morphological and synonym names [3]. Pennahia anea in the world of commerce is called a donkey croaker or greyfin croaker [2]. Donkey croaker was have a habitat in coastal waters on continental shelves with water depths reaching 60 m [1]. Donkey croaker is a tropical and subtropical fish with the main distribution area in the Indian Ocean in the geographical area of 29°N-10 °S and 48-125°E [1]. Especially at the bottom of muddy and sandy waters near the coast [4]

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