Increasing Abundance of Silky Sharks in the Eastern Indian Ocean: Good News or a Reason to be Cautious?
The silky shark (Carcharhinus falciformis) is the most common shark landed in Indonesian waters, including in the Indian Ocean. However, even though they are frequently caught, there is a lack of information on the population and abundance of silky sharks in the Indian Ocean. Cilacap and Tanjung Lua...
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| Format: | Article |
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MDPI AG
2018-07-01
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| Series: | Fishes |
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| Online Access: | http://www.mdpi.com/2410-3888/3/3/29 |
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| author | Benaya Meitasari Simeon Efin Muttaqin Ulfah Mardhiah Muhammad Ichsan Dharmadi Andhika Prima Prasetyo Fahmi Irfan Yulianto |
| author_facet | Benaya Meitasari Simeon Efin Muttaqin Ulfah Mardhiah Muhammad Ichsan Dharmadi Andhika Prima Prasetyo Fahmi Irfan Yulianto |
| author_sort | Benaya Meitasari Simeon |
| collection | DOAJ |
| description | The silky shark (Carcharhinus falciformis) is the most common shark landed in Indonesian waters, including in the Indian Ocean. However, even though they are frequently caught, there is a lack of information on the population and abundance of silky sharks in the Indian Ocean. Cilacap and Tanjung Luar are two of Indonesia’s shark fishery hotspots, both located on the edge of the Indian Ocean, which is a part of the Indonesian Fisheries Management Area (FMA) 573. The fishers from both places usually have fishing grounds in that particular fisheries management area. This research aims to update the abundance, and to investigate the factors, which influence catches of silky shark in the FMA 573 based on monthly enumeration during 2015–2016. This study found that standardized catch-per-unit-effort (CPUE) or abundance indices of silky shark in the Indonesian FMA 573 increased from 2015 to 2016. We suggested that fish immigration and decreasing fishing pressure may affect the fish abundance. Fisheries management is required to regulate the fishing pressure, such as controlling the number of boats/licenses and the number of trips or fishing gear, as well as initializing spatial and temporal fishing closure. |
| first_indexed | 2024-12-10T21:55:45Z |
| format | Article |
| id | doaj.art-a4332cd327ad401b9deab30a21c52343 |
| institution | Directory Open Access Journal |
| issn | 2410-3888 |
| language | English |
| last_indexed | 2024-12-10T21:55:45Z |
| publishDate | 2018-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fishes |
| spelling | doaj.art-a4332cd327ad401b9deab30a21c523432022-12-22T01:32:02ZengMDPI AGFishes2410-38882018-07-013329010.3390/fishes3030029fishes3030029Increasing Abundance of Silky Sharks in the Eastern Indian Ocean: Good News or a Reason to be Cautious?Benaya Meitasari Simeon0Efin Muttaqin1Ulfah Mardhiah2Muhammad Ichsan3Dharmadi4Andhika Prima Prasetyo5Fahmi6Irfan Yulianto7Wildlife Conservation Society—Indonesia Program, Jalan Tampomas No.35, Babakan, Bogor Tengah, Bantarjati, Bogor Utara, Kota Bogor, Jawa Barat 16151, IndonesiaWildlife Conservation Society—Indonesia Program, Jalan Tampomas No.35, Babakan, Bogor Tengah, Bantarjati, Bogor Utara, Kota Bogor, Jawa Barat 16151, IndonesiaWildlife Conservation Society—Indonesia Program, Jalan Tampomas No.35, Babakan, Bogor Tengah, Bantarjati, Bogor Utara, Kota Bogor, Jawa Barat 16151, IndonesiaWildlife Conservation Society—Indonesia Program, Jalan Tampomas No.35, Babakan, Bogor Tengah, Bantarjati, Bogor Utara, Kota Bogor, Jawa Barat 16151, IndonesiaCenter for Fisheries Research, Indonesia Ministry of Marine Affairs and Fisheries, Jl. Pasir Putih II, Ancol Timur, Jakarta 14430, IndonesiaCenter for Fisheries Research, Indonesia Ministry of Marine Affairs and Fisheries, Jl. Pasir Putih II, Ancol Timur, Jakarta 14430, IndonesiaIndonesian Institute of Sciences, Jl. Pasir Putih I, Ancol Timur, Jakarta 14430, IndonesiaWildlife Conservation Society—Indonesia Program, Jalan Tampomas No.35, Babakan, Bogor Tengah, Bantarjati, Bogor Utara, Kota Bogor, Jawa Barat 16151, IndonesiaThe silky shark (Carcharhinus falciformis) is the most common shark landed in Indonesian waters, including in the Indian Ocean. However, even though they are frequently caught, there is a lack of information on the population and abundance of silky sharks in the Indian Ocean. Cilacap and Tanjung Luar are two of Indonesia’s shark fishery hotspots, both located on the edge of the Indian Ocean, which is a part of the Indonesian Fisheries Management Area (FMA) 573. The fishers from both places usually have fishing grounds in that particular fisheries management area. This research aims to update the abundance, and to investigate the factors, which influence catches of silky shark in the FMA 573 based on monthly enumeration during 2015–2016. This study found that standardized catch-per-unit-effort (CPUE) or abundance indices of silky shark in the Indonesian FMA 573 increased from 2015 to 2016. We suggested that fish immigration and decreasing fishing pressure may affect the fish abundance. Fisheries management is required to regulate the fishing pressure, such as controlling the number of boats/licenses and the number of trips or fishing gear, as well as initializing spatial and temporal fishing closure.http://www.mdpi.com/2410-3888/3/3/29shark fisheries managementsharks immigrationfishing pressureGLMabundance indicesstandardized CPUE |
| spellingShingle | Benaya Meitasari Simeon Efin Muttaqin Ulfah Mardhiah Muhammad Ichsan Dharmadi Andhika Prima Prasetyo Fahmi Irfan Yulianto Increasing Abundance of Silky Sharks in the Eastern Indian Ocean: Good News or a Reason to be Cautious? Fishes shark fisheries management sharks immigration fishing pressure GLM abundance indices standardized CPUE |
| title | Increasing Abundance of Silky Sharks in the Eastern Indian Ocean: Good News or a Reason to be Cautious? |
| title_full | Increasing Abundance of Silky Sharks in the Eastern Indian Ocean: Good News or a Reason to be Cautious? |
| title_fullStr | Increasing Abundance of Silky Sharks in the Eastern Indian Ocean: Good News or a Reason to be Cautious? |
| title_full_unstemmed | Increasing Abundance of Silky Sharks in the Eastern Indian Ocean: Good News or a Reason to be Cautious? |
| title_short | Increasing Abundance of Silky Sharks in the Eastern Indian Ocean: Good News or a Reason to be Cautious? |
| title_sort | increasing abundance of silky sharks in the eastern indian ocean good news or a reason to be cautious |
| topic | shark fisheries management sharks immigration fishing pressure GLM abundance indices standardized CPUE |
| url | http://www.mdpi.com/2410-3888/3/3/29 |
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