Effect of Temperature on Fertilization, Hatching and Survival Rates of Heterobranchus bidorsalis Eggs and Hatchlings

Okunsebor, S. A.; Ofojekwu, P. C.; Kakwi, D.; Audu, B. S.

doi:10.9734/bjast/2015/9505

Cited by 10 publications

(4 citation statements)

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“…Mortality was highest prior to hatching (70%–90%) which is consistent with previous reports of up to 95% mortality prior to hatching in herring (Bunn et al., 2000; Dahlberg, 1979). Increases in temperature have been documented to influence the onset of hatching and mortality in the larvae of other fish species (Geffen et al., 2006; Okunsebor et al., 2015; Yang & Chen, 2005). Consistent with these data, here we report evidence of earlier hatching and increased mortality in the 13°C than in the 11°C treatments.…”

Section: Discussionmentioning

confidence: 99%

Epigenetic patterns in Atlantic herring (Clupea harengus): Temperature and photoperiod as environmental stressors during larval development

Kho,

Delgado,

McCracken

et al. 2023

Molecular Ecology

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Understanding the molecular mechanisms underlying individual responses to environmental changes is crucial for species conservation and management. Pelagic fishes including Atlantic herring (Clupea harengus) are of particular interest because of their key ecological and economic roles and their susceptibility to a changing ocean from global warming. Temperature and photoperiod have been linked with spawning time and location in adult herring, but no study has thus far investigated the role of environmental factors on gene regulation during the vulnerable early developmental stages. Here, we examine DNA methylation patterns of larval herring bred under two temperatures (11°C and 13°C) and photoperiod (6 and 12 h) regimes in a 2 × 2 factorial design. We found consistently high levels of global methylation across all individuals and a decline in global methylation with increased developmental stage that was more pronounced at 13°C (p ≤ 0.007) than at 11°C (p ≥ 0.21). Most of the differentially methylated sites were in exon and promoter regions for genes linked to metabolism and development, some of which were hypermethylated at higher temperature. These results demonstrate the important role of DNA methylation during larval development and suggest that this molecular mechanism might be key in regulating early‐stage responses to environmental stressors in Atlantic herring.

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Section: Discussionmentioning

confidence: 99%

Epigenetic patterns in Atlantic herring (Clupea harengus): Temperature and photoperiod as environmental stressors during larval development

Kho,

Delgado,

McCracken

et al. 2023

Molecular Ecology

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“…Unfavorable temperatures impair growth by changing the metabolic and developmental processes of fish [96,97], ultimately affecting seed production [20,98]. Rearing temperature considerably affects egg production, hatching rate, and larval growth rate [99,100]. Further climate change-related effects, such as hypoxia [101,102], acidification [103,104], and salinity [105,106] are likely to strongly affect the quality and amount of fish gamete and the viability of the offspring.…”

Section: Seedsmentioning

confidence: 99%

An Overview of the Implication of Climate Change on Fish Farming in Egypt

Mehrim

Refaey

2023

Sustainability

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Aquaculture is an important component of the human diet, providing high-quality aquatic food for global or local consumption. Egypt is one of the countries most vulnerable to the potential impacts of climate change (CC), especially in the aquaculture sector. CC is one of the biggest challenges of our time and has negatively affected different water bodies. CC leads to the combination of changes in water availability, a decrease in water quality, the movement of salt water upstream due to rising sea levels, and the salinization of groundwater supplies will threaten inland freshwater aquaculture. Similarly, higher temperatures resulting from CC lead to reduce dissolved oxygen levels, increased fish metabolic rates, increased risk of disease spread, increased fish mortality, and consequently decreased fish production. CC may also indirectly affect aquaculture activities; for example, large areas of lowland aquaculture ponds can be highly vulnerable to flooding from rising sea levels. Thus, the current overview will briefly discuss the state of the aquaculture sector in Egypt, the meaning of CC, its causes, and its effects on the different elements of the aquaculture sector, and finally, we will review the appropriate ways to mitigate the adverse effects of CC on fish farming, especially in Egypt.

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“…Salah satu parameter lingkungan yang berpengaruh signifikan terhadap daya tetas dan perkembangan larva ikan adalah suhu). Suhu media berpengaruh penting terhadapperkembangan organ larva,tingkatan daya tetas,tingkah laku larva dantingkat abnormalitas larva (Sfakianakis et al, 2011) Beberapa penelitian terdahulu menunjukkan bahwasetiap jenis ikan memiliki kisaran suhu optimum yangberbeda terkait dengan perkembangan dan daya tetaslarva (El-Hakim and El-Gamal, 2009;Okunsebor et al, 2015).…”

Section: Pendahuluanunclassified

Pengaruh Suhu Terhadap Kualitas Telur Ikan Mas Koki (Carassius auratus)

Sandi¹,

Nursyahran

2021

jlpp

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Penelitian ini bertujuan untuk mengetahui waktu penetasan dan daya tetas telur ikan mas koki (Carassius auratus) diberikan suhu yang berbeda. Penelitian ini dilaksanakan pada Bulan Juli sampai Agustus 2019 di UPTD Balai Benih Ikan (BBI) Air Tawar Bantimurung Kabupaten Maros. Metode peneltian yang digunakan adalah Rancangan Acak Lengkap (RAL), dengan 4 perlakuan dan 3 ulangan. Sampel diambil dengan teknik acak sederhana. Perlakuan yang diuji adalah suhu 250C sebagai control (perlakuan A), suhu 280C (perlakuan B), suhu 300C (perlakuan C)., dan 320C (perlakuan D). Parameter yang diuji adalah waktu penetasan dan daya tetas telur. Analisis data menggunakan analisis ragam. Hasil penelitian menunjukkan bahwa waktu penetasan tertinggi diperoleh pada perlakuan C 34.2 detik, disusul pelakuan D 44.09 detik tidak berbeda jauh pada pada perlakuan B 46.45 detik dan yang terendah 66.92 detik. Daya tetas telur tertinggi diperoleh pada perlakuan C sebesar 93,81%, disusul perlakuan D 89.18% tidak berbeda jauh dengan perlakuan B sebesar 82.33% dan yang terendah pada perlakuan A sebesar 80.93%. hasil analisis ragam menunjukkan bahwa pemberian suhu yang berbeda berpengaruh nyata (p<0,05) terhadap waktu penetasan dan daya tetas telur. Suhu berpengaruh terhadap waktu penetasan dan daya tetas telur ikan mas koki (Carrasius auratus) dengan suhu inkubasi 300C

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Effect of Temperature on Fertilization, Hatching and Survival Rates of Heterobranchus bidorsalis Eggs and Hatchlings

Cited by 10 publications

References 0 publications

Epigenetic patterns in Atlantic herring (Clupea harengus): Temperature and photoperiod as environmental stressors during larval development

Epigenetic patterns in Atlantic herring (Clupea harengus): Temperature and photoperiod as environmental stressors during larval development

An Overview of the Implication of Climate Change on Fish Farming in Egypt

Pengaruh Suhu Terhadap Kualitas Telur Ikan Mas Koki (Carassius auratus)

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