Background The presence of whale sharks (Rhincodon typus) in Wondama Bay has long been known and the species is an icon of this region. In addition to their enormous size, these sharks are not dangerous to or fearful of humans, so there has been growing interest in utilizing this animal for eco-tourism. Within Wondama Bay, whale sharks distribute in several regions, including Kwatisore waters. Since biological information on this species is lacking, the present study aimed to investigate the whale shark population using photo identification, frequency of appearance, sex, and scars on the body. The information obtained from this study is important for species conservation and management. Approach The research was performed in Kwatisore waters of Wondama Bay during 2010–2013, and continued from April to June 2014. Whale shark identification was based on photos taken by divers by plotting three reference points, i.e. the top of the fifth gill slit, the posterior-most point where the pectoral fin meets the body, and the bottom of the fifth gill slit (Brooks et al., 2010). During each encounter, the animals were length measured, sex was identified through the presence or absence of claspers, and the position of scars and wounds were determined on the body. Results The total number of whale sharks encountered in Kwatisore waters were 120 and 19 animals for the period of 2010–2013 and 2014, respectively. Based on ID pictures, the population was composed of 126 sharks consisting of 122 males and 4 females. With regard to 2014 observations, the animals were all males and were immature, as the average body length was 4 m. The greatest number of sharks was observed between 0600–1200 hours, during which time 80 individuals were seen on the surface. It was found that 58% of the population had scars and wounds, of which 34% were on the lips and 25% on the fins. Conclusions Data on IDs and body length of each individual, as well as sex composition, are important information for understanding whale shark population structure, and will benefit the conservation and management of these animals.
The waters of South Sorong have potential shrimp resources, including abundant banana shrimp (Penaeus merguiensis de Man, 1888). This study aims to obtain information about the morphometric characteristics and growth of banana shrimp in the fishing area around the waters of Kampung Bakoi, South Sorong Regency, West Papua Province. Data collections were carried out in June and October 2019 using descriptive methods with direct observation techniques. Based on the results of data analysis, it was found that the total length of shrimp caught in Bakoi Village was in the range of 10 - 26.8 cm and the most were caught measuring 15.2 cm to 16.4 cm. The model of the relationship between length and weight of banana shrimp in Bakoi Village follows the equation Log W= 1,630+2,659 Log (L) or the form of negative allometric growth. Analysis of the relationship between total length (Y) and carapace length (X) (including rostrum) and the relationship between total length and carapace length (Z) (excluding rostrum) obtained the best estimator models, each following the logarithmic equations L = -2,188 + 10,226 Ln(PK) and L = 4,439 + 9,201 Ln(PKt) respectively.
Ikan hiu dan pari adalah komoditas perikanan penting di dunia dan memiliki peranan baik secara ekologi maupun ekonomis. Tujuan penelitian ini adalah mengetahui jenis-jenis sumber daya hiu dan pari yang dimanfaatkan secara tradisonal oleh masyarakat di Kabupaten Sorong Selatan dan Kabupaten Teluk Bintuni Provinsi Papua Barat. Penelitian ini bersifat eksploratif dan menggunakan pendekatan kualitatif dengan metode deskriptif. Data yang dikumpulkan berupa data primer dan sekunder. Data primer dikumpulkan melalui pengamatan dan wawancara langsung di lapangan. Berdasarkan hasil penelitian ditemukan bahwa jenis ikan hiu dan pari yang dimanfaatkan oleh masyarakat di Kabupaten Bintuni dan Sorong Selatan adalah 16 jenis. Status dari masing-masing jenis berbeda, yaitu 3 jenis masuk dalam kategori Vurnarable (Sphyrna sp, Aetobatus ocellatus dan Rhinoptera javanica), satu spesies masuk kategori Endangered (Eusphyra blochii) serta 5 jenis masuk dalam kategori Critically Endangered. Pemanfaatan ikan hiu dan pari oleh masyarakat pesisir/nelayan di Kabupaten Sorong Selatan dan Kabupaten Bintuni berada dalam kategori pemanfaatan secara tradisional yaitu berupa produk olahan berupa daging ikan garam/asin dan dendeng. Sumber daya ikan hiu dan pari bukanlah target tangkapan masyarakat tetapi merupakan bycatch yang kemudian diolah secara tradisional. Kurangnya pengetahuan masyarakat tentang pentingnya menjaga sebuah sumber daya yang memiliki status perlindungan akan menyebabkan penangkapan dilakukan secara terus menerus pada jenis-jenis yang berstatus vulnerable (terancam punah) atau spesies yang dilindungi. Hal ini dibuktikan bahwa nilai nilai korelasi antara tingkat pemanfaatan dengan pengetahuan masyarakat tentang sumber daya ikan hiu dan pari rendah yaitu korelasi (r) sebesar 0.56. Title: Traditional Utilization of Shark and Ray Resources by Coastal Community of West Papua Sharks and rays are essential fishery commodities in the world and have a role both ecologically and economically. This study aimed to determine the types of shark and ray resources used and the traditional pattern of utilization by the people in South Sorong Regency and Teluk Bintuni Regency, West Papua Province. This research method is an exploratory and qualitative approach with a descriptive method. The data was collected in the form of primary and secondary data. Primary data were collected through direct observation and interviews in the field. The findings show that there are 16 species of sharks and rays caught by the community in Bintuni Bay and South Sorong Regencies. Each species’ status is different and can be defined as three species in the vulnerable (Sphyrna sp, Aetobatus ocellatus and Rhinoptera javanica), one as Endangered species (Eusphyra blochii), and five species in the Critically Endangered species. The utilization of sharks and rays by coastal communities/fishers in South Sorong Regency and Bintuni Regency is still in the category of traditional use, namely in the form of processed products in the form of smoked fish meat, salt/salted fish, and beef jerky. The level of traditional utilization of shark and ray resources by the local community in South Sorong Regency and Bintuni Regency is relatively high due to the lack of knowledge of local communities about the status of these fishery resources, which have been used traditionally. Furthermore, this can also indicate that lack of public knowledge about the importance of maintaining a protected resource will then continue the effort to catch the vulnerable (endangered) or protected species. It is proven that the correlation value between the utilization rate and public knowledge about shark and ray resources is low, namely a correlation (r) of 0.56.
Background The whale shark (Rhincodon typus) is an iconic species for Teluk Cenderawasih National Park (TCNP), West Papua and Papua. They appear regularly near lift-net fisheries (bagans) year round in some areas, especially near Kwatisore in West Papua, resulting in the development of limited tourism since 2009. The objective of our study was to document the characteristics (i.e., number, size, sex) of whale sharks that occur in TCNP. Approach We used photographs to identify whale sharks from natural patterns and other body markings that periodically appeared near operational bagans in southern Cenderawasih Bay. The photo ID technique was used to identify each individual based on the white body spot pattern. We also made subjective estimates of the relative sizes of each shark and determined whether they were male or female from the presence or absence of claspers. Results We obtained 8,530 photos of sharks from February 2010 through June 2015. From that database we tentatively identified 126 sharks, 83% of them male, 14% female and 3% undetermined. The estimated length of the sharks averaged 4.4 m (± 1.25 m, range = 2 m to 8 m). Around 40% of the individuals had scars, mostly around their mouths and fins. Most (59%) of the sharks were seen in one year, while only 3% were seen over more than one year during the five year study. Some exceptions were one shark that was seen 32 times over four years, and another that was seen 29 times over five years. Conclusions Juvenile male whale sharks appear to be transient and highly mobile in Cenderawasih Bay. Whether adult males or adult females occur here is not known, as they may not be attracted to the fishing bagans or do not otherwise approach the sea surface where they can be observed. Because of the increased tourism for whale sharks and the interactions of whale sharks with the fishing bagans, we recommend continued systematic observations of whale sharks and vigilant surveillance for understanding the dynamics of interactions among tourist activities, fishing operations, and whale sharks.
Ikan layang (Decapterus spp) merupakan komponen utama dari sumberdaya ikan pelagis kecil yang sering tertangkap oleh nelayan bagan perahu di perairan Teluk Doreri, namun belum diketahui secara pasti jenis-jenis ikan layang (Decapterus spp) yang tertangkap oleh nelayan bagan perahu di perairan ini, sehingga dapat berakibat terhadap jenis-jenis ikan layang (Decapterus spp) secara spesies, jika tidak dapat dikelola secara berkelanjutan, sedangkan informasi ini sangat perlu diketahui untuk menunjang pengelolaan jenis-jenis ikan layang (Decapterus spp) perairan laut Teluk Doreri Kabupaten Manokwari dalam rangka pengelolaan perikanan tangkap secara berkelanjutan dan terpadu. Untuk itu, tujuan dari penelitian ini adalah mengetahui jenis-jenis ikan layang yang tertangkap oleh nelayan bagan di Teluk Doreri, Kabupaten Manokwari, Provinsi Papua Barat. Penelitian ini dilakukan selama 7 hari di bulan April 2019. Metode yang digunakan dalam penelitian ini adalah metode observasi langsung. Survei dilakukan pada 6 bagan nelayan yang melakukan operasi penangkapan di perairan Teluk Doreri. Analisis data yang digunakan dalam penelitian ini yaitu analisis deskriptif. Berdasarkan hasil yang didapatkan, nelayan biasanya melakukan operasi peangkapan pada 2 lokasi penangkapan, yaitu belakang Pulau Mansinam dan sekitar perairan Anday, dimana ke 2 lokasi ini merupakan target Fishing ground nelayan bagan. Hasil identifikasi jenis-jenis ikan layang menunjukan bahwa, dari 6 bagan nelayan yang melakukan penangkapan ikan layang, ditemukan 3 jenis ikan layang (Decapterus spp) yang sering tertangkap oleh bagan nelayan di sekitar perairan Teluk Doreri, yaitu jenis Decapterus macarellus, Decapterus akaadsi dan Decapterus macrosoma. Diperlukan kajian lebih lanjut dalam menunjang prospek perikanan ikan layang di Teluk Doreri, Kabupaten Manokwari, Provinsi Papua Barat, Indonesia.
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