Effects of the ectoparasite Caligus rogercresseyi on Salmo salar blood parameters under farm conditions

González, Margarita P.; Muñoz, José Luis Pedraz; Valerio, Víctor; Vargas‐Chacoff, Luis

doi:10.1016/j.aquaculture.2016.01.027

Cited by 22 publications

(14 citation statements)

References 31 publications

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“…This upregulation of hepcidin can be linked to an increase in the haematocrit, as has been previously reported for Atlantic salmon infested with C. rogercresseyi (González et al . ). Furthermore, our results suggest an increase in iron availability in Atlantic salmon during C. rogercresseyi infestation, a process regulated with high levels of iron transport genes.…”

Section: Discussionmentioning

confidence: 97%

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Uncovering iron regulation with species‐specific transcriptome patterns in Atlantic and coho salmon during a Caligus rogercresseyi infestation

Valenzuela-Muñoz

Boltaña

Gallardo‐Escárate

2017

Journal of Fish Diseases

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Salmon species cultured in Chile evidence different levels of susceptibility to the sea louse Caligus rogercresseyi. These differences have mainly been associated with specific immune responses. Moreover, iron regulation seems to be an important mechanism to confer immunity during the host infestation. This response called nutritional immunity has been described in bacterial infections, despite that no comprehensive studies involving in marine ectoparasites infestation have been reported. With this aim, we analysed the transcriptome profiles of Atlantic and coho salmon infected with C. rogercresseyi to evidence modulation of the iron metabolism as a proxy of nutritional immune responses. Whole transcriptome sequencing was performed in samples of skin and head kidney from Atlantic and coho salmon infected with sea lice. RNA-seq analyses revealed significant upregulation of transcripts in both salmon species at 7 and 14 dpi in skin and head kidney, respectively. However, iron regulation transcripts were differentially modulated, evidencing species-specific expression profiles. Genes related to heme degradation and iron transport such as hepcidin, transferrin and haptoglobin were primary upregulated in Atlantic salmon; meanwhile, in coho salmon, genes associated with heme biosynthesis were strongly transcribed. In summary, Atlantic salmon, which are more susceptible to infestation, presented molecular mechanisms to deplete cellular iron availability, suggesting putative mechanisms of nutritional immunity. In contrast, resistant coho salmon were less affected by sea lice, mainly activating pro-inflammatory mechanisms to cope with infestation.

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Section: Discussionmentioning

confidence: 97%

“…In this regard, a recent study reported a decrease in Atlantic salmon haemoglobin during C. rogercresseyi infestation (González et al . ), suggesting a strategy of Atlantic salmon to reduce heme available during C. rogercresseyi infestation.…”

Section: Discussionmentioning

confidence: 99%

Uncovering iron regulation with species‐specific transcriptome patterns in Atlantic and coho salmon during a Caligus rogercresseyi infestation

Valenzuela-Muñoz

Boltaña

Gallardo‐Escárate

2017

Journal of Fish Diseases

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“…Setidaknya ada dua hal yang dapat terjadi apabila terjadi serangan penyakit, pertama sistem produksi perikanan budidaya berhenti dan kedua, kerugian materi yang sangat tidak sedikit karena terjadinya kematian masal dari biota yang dipelihara. Selanjutnya diantara organisme penyebab penyakit yang terbukti telah atau pernah mengakibatkanterjadinya kedua hal tersebut terjadi adalah ektoparasit (González et al, 2016).…”

Section: Pendahuluanunclassified

“…Ketika itu terjadi maka pasti akan terjadi perubahan kandungan beberapa parameter darah,seperti haemoglobin dan hematokrit. González et al (2016) telah membuktikan bahwa ektoparasit dari jenis Caligus rogercresseyidan Piscirickettsia salmonis yang m enyerang ikan Salmo salar ternyata menyebabkan turunnya kandungan haemoglobin dan meningkatnya hematocrit darah (Gambar 1); baik serangan yang hanya dilakukan oleh Caligus rogercresseyi maupun berdua dengan Piscirickettsia salmonis.…”

Section: Ektoparasit Penghisap Darah Dan Cairan Tubuhunclassified

“…Penelitian tentang penyakit AGD begitu banyak dilakukan dan salah satunya hasil diketahui bahwa vektor pembawanya adalah ektoparasit Paramoeba perurans (Rolin et al, 2016). Gambar 1.Pengaruh infeksi Caligus rogercresseyi dan Piscirickettsia salmonis terhadap kadar hemoglobin dan hematokrit darah ikan Salmo salar (González et al, 2016) Keterangan: PS + and Cal + menunjukkan kedua parasit menginfeksi, PS -dan Cal + menunjukkan Piscirickettsia salmonis menginfeksi dan Caligus rogercresseyi tidak, dan perlakuan PS -and Cal -menunjukkan kedua parasit tidak menginfeksi.…”

Section: Ektoparasit Sebagai Vektor Patogenunclassified

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Ektoparasit Dalam Perspektif Perikanan Budidaya

Eliyani

2017

JURNAL KEBIJAKAN PERIKANAN INDONESIA

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Pengembangan sektor perikanan budidaya di Indonesia harus terus dilakukan mengingat hampir 70% produksi ikan berasal dari sektor ini. Dalam pengembangannya, salah satu faktor yang harus diperhatikan adalah masalah kesehatan ikan, terutama yang berhubungan dengan hama dan penyakit termasuk di dalamnya ektoparasit. Meskipun tidak mematikan ikan secara langsung, ektoparasit sangat berbahaya bagi ikan karena menjadi pintu pembuka masuknya patogen yang berbahaya bagi kehidupan ikan, baik dari jenis virus, bakteri, jamur maupun dari jenis endoparasit. Identifikasi jenis dan keberadaan ektoparasit merupakan upaya awal untuk penanggulangan maupun antisipasi agar tidak terjadi wabah ketika gejala awal sudah diketahui. Upaya lain adalah penanggulangan ketika parasit ini telah menginfeksi yang kegiatannya dapat dilakukan melalui penggunakan bahan kimia, fitokimia, fitofarmaka, maupun dengan manipulasi lingkungan dan pakan.In Indonesia, 70 percent of fish production is contributed by aquaculture activities. It is therefore necessary to prioritize this activity to sustain the share of fish and fisheries activities to Indonesian economy. Keeping the fish always in healthy condition and prevention them from diseases and parasites such as ectoparasite are important factors in aquaculture. Ectoparasite not only indirectly causing fish loss but they are also very dangerous in opening the invasion of fish pathogens (viruses, bacteria, fungi, or endoparasites). It is then necessary to identify ectoparasite as soon as early symptoms are detected so that further negative impacts could be avoided. When the parasites have already attacked, a couple of treatment could be implemented: chemical poisons, phytochemicals or other natural agents, and also applying environment and feed manipulations.

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Glucose Homeostasis—‘Life’s Little Luxury Balanced’

Steinberg

2022

Aquatic Animal Nutrition

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Effects of the ectoparasite Caligus rogercresseyi on Salmo salar blood parameters under farm conditions

Cited by 22 publications

References 31 publications

Uncovering iron regulation with species‐specific transcriptome patterns in Atlantic and coho salmon during a Caligus rogercresseyi infestation

Uncovering iron regulation with species‐specific transcriptome patterns in Atlantic and coho salmon during a Caligus rogercresseyi infestation

Ektoparasit Dalam Perspektif Perikanan Budidaya

Glucose Homeostasis—‘Life’s Little Luxury Balanced’

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