Gross Diet Composition and Trophic Level Estimation of the Spotcheek Emperor, &lt;I&gt;Lethrinus Rubrioperculatus&lt;/I&gt; (actinopterygii: Perciformes: Lethrinidae), in the Commonwealth of the Northern Mariana Islands, Micronesia

Trianni, Michael S.; Tenorio, Michael C.

doi:10.3750/aip2011.42.2.02

Cited by 8 publications

(4 citation statements)

References 21 publications

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“…In addition to a shift in abundance of size classes between years at Ashmore Reef, there was also evidence for redistribution of some species between reef and near‐reef habitats, possibly as a response to the increase in shark numbers. For example, in 2004 when sharks were in low numbers at Ashmore Reef, the small piscivore L. rubrioperculatus (Trianni & Tenorio, ) occurred more commonly in the reef habitat, whereas in 2016, once shark populations had recovered, this species was more abundant in near‐reef habitats (largely sand and rubble) where there had been a much smaller increase in shark numbers. Total abundances of this species differed little between 2004 and 2016, suggesting that redistribution may have contributed to these changes.…”

Section: Discussionmentioning

confidence: 99%

Protection from illegal fishing and shark recovery restructures mesopredatory fish communities on a coral reef

Speed

Rees

Cure

et al. 2019

Ecology and Evolution

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The recovery of communities of predatory fishes within a no‐take marine reserve after the eradication of illegal fishing provides an opportunity to examine the role of sharks and other large‐bodied mesopredatory fishes in structuring reef fish communities. We used baited remote underwater video stations to investigate whether an increase in sharks was associated with a change in structure of the mesopredatory fish community at Ashmore Reef, Western Australia. We found an almost fourfold increase in shark abundance in reef habitat from 0.64 hr−1 ± 0.15 SE in 2004, when Ashmore Reef was being fished illegally, to 2.45 hr−1 ± 0.37 in 2016, after eight years of full‐time enforcement of the reserve. Shark recovery in reef habitat was accompanied by a two and a half‐fold decline in the abundance of small mesopredatory fishes (≤50 cm TL) (14.00 hr−1 ± 3.79 to 5.6 hr−1 ± 1.20) and a concomitant increase in large mesopredatory fishes (≥100 cm TL) from 1.82 hr−1 ± 0.48 to 4.27 hr−1 ± 0.93. In contrast, near‐reef habitats showed an increase in abundance of large mesopredatory fishes between years (2.00 hr−1 ± 0.65 to 4.56 hr−1 ± 1.11), although only smaller increases in sharks (0.67 hr−1 ± 0.25 to 1.22 hr−1 ± 0.34) and smaller mesopredatory fishes. Although the abundance of most mesopredatory groups increased with recovery from fishing, we suggest that the large decline of small mesopredatory fish in reef habitat was mostly due to higher predation pressure following the increase in sharks and large mesopredatory fishes. At the regional scale, the structure of fished communities at Ashmore Reef in 2004 resembled those of present day Scott Reefs, where fishing still continues today. In 2016, Ashmore fish communities resembled those of the Rowley Shoals, which have been protected from fishing for decades.

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Section: Discussionmentioning

confidence: 99%

Protection from illegal fishing and shark recovery restructures mesopredatory fish communities on a coral reef

Speed

Rees

Cure

et al. 2019

Ecology and Evolution

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“…Secara umum, ikan lencam memangsa krustasea (kepiting, udang), moluska (gastropoda, bivalvia, nudribranch, cumi-cumi dan gurita kecil), echinodermata (seaurchins, bintang dolar, bintang laut, brittlestar), polychaeta, dan ikan (Carpenter & Allen, 1989;Trianni & Tenorio, 2012). Panjang usus ikan lencam Lethrinus rubrioperculatus lebih pendek dibandingkan panjang tubuh, dengan rasio 0,29-0,76 rata-rata 0,55 atau 55% dari panjag tubuh, termasuk dalam kategori ikan karnivor (Tampi, 2021).…”

Section: Pendahuluanunclassified

“…Hasil analisis makanan ikan lencam di Napo Keluar Nain Perairan Likupang makanan utamanya tidak ada perbedaan dengan hasil analisis yang dilakukan Trianni & Tenorio (2012) (Effendie, 2002). Dimensi mulut juga menggambarkan ukuran terbesar dari makanan yang mampuh ditelan ikan atau secara ontogenetis, semakin besar ukuran ikan, semakin bertambah ukuran makanan yang dapat ditelan (Gerking 1994).…”

Section: Sebaran Sampel Ikan Lencam Lethrinus Rubrioperculatusunclassified

“…Dalam penelitian Trianni & Tenorio (2012) di Amerika Serikat, Kepulauan Mariana Utara yang terletak di Samudra Pasifik makanan utama ikan ukuran kecil, sedang dan besar adalah ikan. Ditemukan bahwa ikan lencam di Amerika Serikat, Kepulauan Mariana Utara yang terletak di Samudra Pasifik pada kategori ukuran kecil makanannya hanya 3 jenis yaitu ikan, moluska dan krustacea, ukuran sedang dan besar masing-masing sebanyak 15 dan 10 jenis.…”

Section: Sebaran Sampel Ikan Lencam Lethrinus Rubrioperculatusunclassified

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Food Habits of Lencam Lethrinus rubrioperculatus Sato, 1978 (Fish: Lethrinidae)

Tampi,

Bataragoa,

Rangan

et al. 2022

JIP

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This study was conducted to determine the type and composition of food contained in the stomach of the Spotchheek emperor Lethrinus rubrioperculatus in Napo Keluar Nain Likupang waters based on sex and body size. Samples were taken from the catch of fishermen and then the fish samples were then taken to the laboratory for data collection. The method used to determine the composition of fish food used the Index of preponderance (IP). The results showed that the food habits of Spotchheek emperor in Napo Luar Nain Likupang waters with the types of food contained in the stomach of Spotchheek emperor, namely fish, shrimp, gastropods, Polychaeta, crabs (megalopa), and octopus where the main food of Spotchheek emperor is IP fish (94,16%). While the main food based on sex and length of body size is fish, with male IP 96.98% and female 91.15% respectively, while based on body length of Spotchheek emperor where small IP 91.06%, medium IP 98.45% and large IP 82.22%. Keywords: Food, Likupang, preponderance Abstrak Penelitian ini dilakukan untuk mengetahui jenis dan komposisi makanan yang terdapat dalam lambung ikan lencam Lethrinus rubrioperculatus di Napo Keluar Nain Perairan Likupang berdasarkan jenis kelamin dan ukuran tubuh. Sampel diambil dari hasil tangkapan nelayan kemudian sampel ikan selanjutnya dibawah ke Labolatorium untuk pengambilan data. Metode yang digunakan untuk mengetahui komposisi makanan ikan digunakan indeks bagian terbesar (IBT). Metode ini digunakan untuk menilai bermacam-macam jenis makanan ikan. Hasil penelitian menunjukan bahwa kebiasaan makanan ikan lencam di Napo Keluar Nain Perairan Likupang dengan jenis makanan yang terdapat dalam lambung ikan lencam yaitu ikan, udang, gastropoda, polychaeta, kepiting (megalopa) dan octopus di mana makanan utama dari ikan lencam adalah ikan IBT (94,16%). Sedangkan makanan utama berdasarkan jenis kelamin dan panjang ukuran tubuh yaitu ikan, dengan masing-masing IBT jantan 96,07% dan betina 91,15% sedangkan berdasarkan panjang ukuran tubuh ikan lencam IBT kecil 91,98%, sedang 98,45% dan besar 82,22%. Kata kunci: Makanan, Likupang, Indeks Bagian Terbesar.

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