FISHING SPACES AND ETHNOECOLOGICAL KNOWLEDGE OF SNOOK AND KING MACKEREL ARTISANAL FISHING IN SOUTHERN ESPÍRITO SANTO - BRAZIL

This paper raises the ethnoecological knowledge of artisanal fishermen from Ubu and Parati, in southern Espírito Santo, in order to understand their strategies for using marine spaces to maintain subsistence and income. Focusing on ethnospecies of snooks and king mackerels, interviews were conducted (n=22) to acquire information on the fishing spaces, behavior of fish, capture techniques, in addition to climatic and oceanographic dynamics that interfere in fishing. Later, this information was correlated with data found in the scientific literature. We conclude, first, that knowledge about the environment allows the fishermen to diversify fishing efforts, techniques and places, provided by the environmental conditions brought every each seasonality. Second, there is a need for specific studies to support local fisheries management, and finally, there is a disagreement about fisheries regulations, considered incompatible with traditional way of working.

Distribution Channel and the Quality of the Narrow-Barred King Mackerel from Blanakan Fishing Port to Fish Markets

Fish is a commodity that has a high nutritional value and highly perishable. The distribution plays an essential role in determining the quality control of the fish to be bought by the consumers. At present, the handling and quality control of the fish, from the fishing port until the fish market, is not proper. The purpose of this study was to determine the distribution channel of mackerel fish (Scomberomorus commerson), the fish handling and to assess the quality of the fish which distibuted from the Blanakan coastal fishing port to the fish market. The results of the kruskal wallis test revealed the influence of the distribution of mackerel fish from Blanakan to the fish market, consist of eight regional fish markets and two local fish markets. Based on the organoleptic assessment, there was a decrease in fish quality by 11% in terms of appearance parameters such as eye, gills, body mucus, odors, and texture .

Morphological and molecular characteristics of Kudoa scomberomori (Myxosporea: Kudoidae) firstly foundfrom the muscles of info-pacific king mackerel Scomberomorus guttatus in Quang Binh province, Vietnam

The genus Kudoa includes about 100 described species. In Vietnam, so far, only one species, Kudoa monodactyli, has been reported. During servey for parasites of marine fish in Quang Binh province, Vietnam in 2017, we found Myxozoan samples in 8 out of 15 Indo-Pacific king mackerel (Scomberomorus guttatus). They are identified as K. scomberomori based on the results of morphological and molecular analyses. A great number of individual spores form white pseudocysts with thin membrane within the muscle fibre. The pseudocysts were 0.1-0.3 × 0.4-0.7 mm. The shape of fresh spore like a flower petal. The spore of K. scomberomori was 6.65 ± 0.09 (6.53-6.76) µm in length, 7.42 ± 0.13 (7.29-7.58) µm in width and 6.55 ± 0.11 (6.40-6.65) µm in thickness. Each spore has six shell valves with same size. Each shell valve contained one polar capsule measuring 3.42 ± 0.09 (3.32-3.48) µm in length and 1.30 ± 0.14 (1.14-1.46) µm in width. This is the first report of K. scomberomori in Vietnam and Indo-Pacific king mackerel is recorded as a new host for this species. Citation: Nguyen Ngoc Chinh, Ha Duy Ngo, Nguyen Huu Duc, Nguyen Thuy Linh, Pham Ngoc Doanh, 2017. Morphological and molecular characteristics of Kudoa scomberomori (Myxosporea: Kudoidae) firstly foundfrom the muscles of info-pacific king mackerel Scomberomorus guttatus in Quang Binh province, Vietnam. Tap chi Sinh hoc, 40(1): x-xx. DOI: 10.15625/0866-7160/v40n1.10671. *Corresponding author: [email protected] Received 13 September 2017, accepted 2 December 2017

BEBERAPA ASPEK BIOLOGI IKAN TENGGIRI PAPAN (Scomberomorus guttatus) DI PERAIRAN CILACAP DAN SEKITARNYA

Tenggiri papan (Scomberomorus guttatus)merupakan ikan yangmemiliki nilai ekonomis penting dan banyak tertangkap dengan gillnet di perairan Cilacap dan sekitarnya. Pada saat ini terdapat kecenderungan ukuran individu yang mengecil. Tujuan Penelitian ini adalah mengetahui beberapa aspek biologi ikan tenggiri papan meliputi sebaran ukuran panjang, hubungan panjang-bobot, nisbah kelamin, tingkat kematangan gonad dan ukuran rata-rata pertama kali matang gonad, berdasarkan hasil tangkapan gillnet yang didaratkan di Pelabuhan Perikanan Samudera Cilacap pada bulan Februari sampai Desember 2013. Hasil penelitian menunjukkan ukuran panjang cagak berkisar antara 11 – 67cm. Pola pertumbuhan ikan tenggiri papan bersifat isometric dimana pertambahan panjang dan bobotnya seimbang. Nisbah kelamin jantan terhadap betina sebagai 1 : 0,7. Panjang pertama kali ikan tertangkap (Lc) dengan gillnet berukuran mata jaring 3 inchi sebesar 32,7 cmFL dan pertama kalimatang gonad (Lm) sebesar 42,34 cmFL. TingkatKematanganGonad (TKG) ikan jantan dan betina didominasi oleh stadia IV terutama pada bulan Februari dan Mei. Hasil penelitian ini menunjukkan dugaan awal masa pemijahan terjadi pada bulan Maret dan Juni, dengan demikian pemijahan dilakukan secara bertahap. Indo-Pasific king mackerel (Scomberomorus guttatus) is one of fish that has an important economic value.The species were many caught by gillnet in Cilacap and adjacent waters. Research was conducted to determine biological aspect of Indo-Pasific king mackerel that includes length distribution, length-weight relationship, sex ratio, maturity stage and length at first mature, based on monthly catches landed at Cilacap fishing port during February to December 2013. The results showed that folk length ranged from 11 to 67 cm. The growth pattern are isometric. The condition of sex ratio ofmales to females was 1 : 0,7. Length at first capture(Lc) by gillnet with mesh size of 3 inches was 32.7 cmFL and length at first maturity(Lm) was 42.34 cmFL. The gonade maturity stage of males and females were dominated by stage IV mainly in Febuary and May. It was indicated that spawning seasons occured in March and June. It was indicated that the fish has multiple spawner.