ASPEK REPRODUKSI IKAN OSKAR (Amphilophus citrinellus Günther, 1864) DI WADUK IR H. DJUANDA, JAWA BARAT

Tampubolon, Prawira A.R.P.; Rahardjo, M. F.; Krismono, Krismono

doi:10.15578/bawal.7.2.2015.67-75

Cited by 4 publications

(13 citation statements)

References 11 publications

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“…Kondisi seimbangnya nisbah kelamin untuk jenis ikan Cichlidae yang berpotensi invasif ditemukan pula di Waduk Cirata untuk ikan golsom (Hemichromis elongatus) (Hedianto et al, 2013) dan ikan nila (Oreochromis niloticus) (Wahyuni et al, 2015), serta di Waduk Ir. H. Djuanda untuk ikan oskar (Amphilophus citrinellus) (Tampubolon et al, 2015) Kelompok ikan Cichlidae pada umumnya memiliki perbedaan ukuran pertama kali matang gonad pada ikan jantan dan betina (Keenleyside, 1991). Perbedaan tersebut terjadi karena adanya perbedaan konversi makanan untuk pertumbuhan/sel atau gonad terlebih dahulu (Bagenal & Braum, 1978;Effendie, 1997).…”

Section: Bahasanunclassified

“…Oleh karena itu, ikan jantan berukuran lebih besar daripada betina pada tingkat kematangan gonad (TKG) yang sama. Kondisi ini serupa seperti pada jenis ikan Cichlidae lainnya, seperti ikan nila (Mendoza et al, 2005;Komolafe &Arawomo, 2007;Shallof & Salama, 2008;Wahyuni et al, 2015), ikan golsom (Hedianto et al, 2013), ikan Cichlasoma trimaculatum (Cruz, 2011), ikan Neetroplus nematopus (McKaye et al, 2010), ikan Tilapia zilli (Mahomoud et al, 2010), dan ikan oskar (Tampubolon et al, 2015). Jenis ikan cichlid yang akan mempengaruhi hasil kawin silang/hibrid dari ikan louhan adalah Cichlasoma trimaculatum dan Amphilophus citrinellus (Dewantoro & Rachmatika, 2016).…”

Section: Bahasanunclassified

“…Ikan Cichlasoma trimaculatum memiliki kisaran ukuran pertama kali matang gonad pada ukuran 12-14 cm untuk ikan jantan dan 8-10 cm untuk ikan betina (Froese & Pauly, 2014), sedangkan ikan Amphilophus citrinellus di Waduk Ir. H. Djuanda dicapai pada ukuran 12,5 cm untuk ikan jantan dan 12,1 cm untuk ikan betina (Tampubolon et al, 2015).…”

Section: Bahasanunclassified

“…Fekunditas ikan Cichlasoma trimaculatum pada TKG siap memijah adalah >1.000 butir (Froese & Pauly, 2014), sedangkan ikan Amphilophus citrinellus di Waduk Ir. H. Djuanda berkisar antara 729-3.299 butir (Tampubolon et al, 2015).Tidak terdapat perbedaan yang besar antara ikan louhan di Danau Matano dengan ikan oskar di Waduk Ir. H. Djuanda (Purnamaningtyas & Tjahjo, 2010;Tampubolon et al, 2015), ikan golsom di Waduk Cirata (Hedianto et al, 2013), dan ikan Cichlasoma urophthalmus (Lopez et al, 2009).…”

Section: Bahasanunclassified

“…H. Djuanda berkisar antara 729-3.299 butir (Tampubolon et al, 2015).Tidak terdapat perbedaan yang besar antara ikan louhan di Danau Matano dengan ikan oskar di Waduk Ir. H. Djuanda (Purnamaningtyas & Tjahjo, 2010;Tampubolon et al, 2015), ikan golsom di Waduk Cirata (Hedianto et al, 2013), dan ikan Cichlasoma urophthalmus (Lopez et al, 2009). Fekunditas pada ikan Cichlidae terkait pada karakter pengasuhan anak (parental care) (Keenleyside, 1991).…”

Section: Bahasanunclassified

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Aspek Reproduksi Ikan Louhan Hibrid Sebagai Ikan Asing Invasif Di Danau Matano, Sulawesi Selatan

Hedianto

Sentosa

Satria

2018

BAWAL Widya Riset Perikanan Tangkap

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Penelitian mengenai aspek reproduksi ikan asing invasif di Danau Matano dibutuhkan dalam upaya pengendalian dan pemberantasan populasinya. Penelitian ini bertujuan untuk mengetahui aspek reproduksi ikan louhan yang diharapkan dapat digunakan sebagai acuan untuk pengendalian ikan asing invasif di Danau Matano, Sulawesi Selatan. Sampel ikan diperoleh dengan menggunakan jaring insang percobaan dengan berbagai ukuran mata jaring pada Mei dan Oktober 2015 serta pada Februari, Juli, dan September 2016 di 14 stasiun penelitian. Penentuan jenis kelamin dan tingkat kematangan gonad (TKG) berdasarkan ciri reproduksi primernya. Fekunditas total dihitung menggunakan metode gravimetrik. Ikan louhan yang tertangkap sebanyak 1.118 ekor terdiri atas 552 ekor ikan jantan, 512 ekor ikan betina, dan 54 ekor tidak dapat ditentukan jenis kelaminnya. Nisbah kelamin secara temporal berada pada kondisi seimbang dengan perbandingan total sebesar 1,1:1. Ikan louhan jantan dan betina mencapai rata-rata ukuran pertama kali matang gonad (Lm50) masing-masing pada panjang total 12,6 cm dan 10,2 cm. Ikan jantan berukuran lebih besar daripada betina pada TKG yang sama. Diameter telur berkisar antara 0,25-2,35 mm (rerata 1,31±0,37 mm) dengan fekunditas berkisar antara 104-3.375 butir. Ikan louhan termasuk tipe pemijah bertahap dan mampu memijah sepanjang tahun di berbagai tipe karakteristik habitat. Puncak pemijahan terjadi pada musim penghujan dan kemarau. Substrat dasar berupa pasir berbatu di kedalaman 15 meter merupakan daerah utama pemijahan ikan louhan di Danau Matano. Rekomendasi pengendalian ikan louhan di Danau Matano melalui penangkapan perlu dilakukan sebelum mencapai ukuran Lm50, di seluruh daerah litoral danau (<10 meter) pada musim kemarau (April-Juni) dan penghujan (September-November).The information on fish reproduction aspects of invasive alien species in Matano Lake is required to setup measure for controlling and eradicating their population. This research aims to determine the reproductive aspects of flowerhorn cichlid that could used as a reference for controlling the invasive alien species in the Matano Lake, South Sulawesi. Sample was collected by using experimental gill-net with various mesh sizes in 14 research stations in several periods (May 2015, October 2015, February 2016, July 2016, and September 2016). Sex determination and gonadal stages identified based on the characteristics of primary reproduction. Total fecundity is calculated using gravimetric method. The total individual flowerhorn cichlid was 1,118 fishes that consists of 552 males, 512 females, and 54 unidentified. The temporary sex ratio indicated balance conditions by ratio 1.1:1. Length at first maturity (Lm50) of male and female of flowerhorn cichlid reached at 12.6 cmTL and 10.2 cmTL, respectively. Males are larger than females at the same gonad maturity stage. The eggs diameter ranged from 0.25 to 2.35 mm (average of 1.31 ± 0.37 mm) with fecundity ranged from 104-3,375 egg which indicated that flowerhorn cichlid was a partial spawner. Flowerhorn cichlid spawned throughout the year (multi spawning) in various types of habitat characteristics with spawning peaks in the rainy and dry seasons. Sandy rock in the depth of 15 meters is the main of spawning area of flowerhorn cichlid in the Matano Lake. The recommendation for controlling flowerhorn cichlid in Matano Lake by fishing, need to be done before its size reaching the Lm50, across the littoral area of the lake (<10 meters) in the dry (April-June) and rainy seasons (September-November).

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Section: Bahasanunclassified

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Aspek Reproduksi Ikan Louhan Hibrid Sebagai Ikan Asing Invasif Di Danau Matano, Sulawesi Selatan

Hedianto

Sentosa

Satria

2018

BAWAL Widya Riset Perikanan Tangkap

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Sex ratio and reproduction of invasive red devil, (Amphilophus labiatus: Cichlidae) in Lake Sentani, Indonesia

et al. 2020

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The Red Devil Cichlid Amphilophus labiatus (Günther 1864), native to Lake Nicaragua and Lake Managua in Central America, is widely cultivated as an attractive, yet aggressive, aquarium fish that has been introduced to several freshwater locations around the world. It was recently introduced into Lake Sentani in Indonesian New Guinea, a naturally rich aquatic habitat home exhibiting a diverse fauna with high endemism. To better understand the invasive potential and impacts of A. labiatus, the present study was undertaken to describe the sex ratio and reproductive potential of A. labiatus in Lake Sentani through determination of its gonad maturation stages, gonado‐somatic index and fecundity. The fish were collected using floating gill nets at six locations around the lake between June and August 2019. Sex identification, gonads type, gonad stage and weight, fecundity were observed in the laboratory. Of the total 542 of A. labiatus collected during the survey, 345 individuals were sampled for sex ratio and reproduction. The overall male:female ratio was skewed towards males in a ratio of 3.28:1. The males were generally found to be in the gonad maturation stage I, while the females were commonly found in gonad maturation stages III and IV for all sampling locations during the study period. The highest male mean GSI value was found for the Yakonde site (0.24 ± 0.21) and at the Ayapo site (1.11 ± 1.01) for the females, with a fecundity of 191–2,720 eggs. The fish have spread to most parts of the lake, being conditioned to potentially spawn at any location, thereby providing an explanation for the observed rapid increase of the A. labiatus population over the last ten years. The results of the present study suggest a high invasive potential for this species in this and other similar lake habitats, warning that their careful management should be undertaken to restrict their further spread in Indonesia and elsewhere.

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Length-Weight Relationship and Condition Factor of Introduced Red Devil Cichlid Amphilophus labiatus, in Lake Sentani, Indonesia

Ohee,

Mote,

Rice

et al. 2024

J. Biol Papua

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Papua’s freshwater ecosystems in the western part of New Guinea have begun to record widespread introductions of invasive species over the past decade. This lake's most dominant and common exotic species is Amphilophus labiatus (Günther, 1864). A study was conducted to document the length-weight relationship and condition factor of these fish in Lake Sentani. From June to August 2019, fish were caught using floating gillnets at six locations around the lake. Total length (TL) (mm), body depth (mm), and body weight (grams) were measured, and condition factor based on gender, body weight, and body length were observed in 345 fish, including 264 males and 81 males. The growth pattern of A. labiatus is positively allometric, with b values ranging from 3.19 to 3. 20 and coefficients of determination (r2) ranging from 0.84 to 0.87. Although the average body length of A. labiatus males was shorter than females, condition factor (CF) values were not significantly different between the sexes and ranged from 0. 64 to 2.03 (0.97 ± 1.17, mean ± SD). For males, it went from 0.67 to 1.19 (0.94 ± 0.13 mean ± SD). However, monthly CF data show a significant decrease in CF in August, suggesting that spawning events occur in late July or early August. A. labiatus grows well and colonizes habitats throughout Lake Sentani.

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ASPEK REPRODUKSI IKAN OSKAR (Amphilophus citrinellus Günther, 1864) DI WADUK IR H. DJUANDA, JAWA BARAT

Cited by 4 publications

References 11 publications

Aspek Reproduksi Ikan Louhan Hibrid Sebagai Ikan Asing Invasif Di Danau Matano, Sulawesi Selatan

Aspek Reproduksi Ikan Louhan Hibrid Sebagai Ikan Asing Invasif Di Danau Matano, Sulawesi Selatan

Sex ratio and reproduction of invasive red devil, (Amphilophus labiatus: Cichlidae) in Lake Sentani, Indonesia

Length-Weight Relationship and Condition Factor of Introduced Red Devil Cichlid Amphilophus labiatus, in Lake Sentani, Indonesia

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