Sturgeon stress reactions in aquaculture

Bayunova, L. V.; Barannikova, I. A.; Semenkova, T.B.

doi:10.1046/j.1439-0426.2002.00410.x

Cited by 124 publications

(89 citation statements)

References 12 publications

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“…Pirarucu show the same trend, as cortisol increases after handling and return to their initial levels 6-h after. Russian sturgeon also presents a cortisol increase after 30-min air exposure followed by a decrease of cortisol levels within 6-h after treatment (Bayunova et al, 2002). On the other hand, Barton (2000) observed that four species of salmonid did not return to their initial condition 6-h after 30-s of air exposure.…”

Section: Discussionmentioning

confidence: 98%

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Physiological responses of pirarucu (Arapaima gigas) to acute handling stress

Gomes

2007

Acta Amaz.

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Pirarucu (Arapaima gigas) is an obligatory air-breathing fish from the Amazon basin. Previous study showed that pirarucu juveniles present a latency period in their response to moderate stress (transportation). Therefore the objective of this study was to verify the effects of a prolonged air exposure stress in lactate, glucose, cortisol, haematocrit, haemoglobin, and liver glycogen in pirarucu. Thirty-six fish were handled by netting and subjected to air exposure for 75-min. Six fish were sampled before handling and at 0, 6, 24, 48, and 96h after handling. Fish cortisol, lactate and haematocrit rose after handling, returning to previous unstressed values on the following sampling (6h after handling). Glucose increased significantly after handling and that was maintained for 24 h. There were no changes in haemoglobin and liver glycogen as a consequence of handling. The results demonstrate a quick response when exposed to an acute stressor and a fast recovery, suggesting that pirarucu does not use their glycogen reserves during an acute stress. The results suggest that pirarucu exhibit physiological stress responses to handling similar in magnitude to those previously documented for many teleostean fishes, including salmonids.KEYWORDS: Pirarucu, Stress, Air exposure, Glycogen, Cortisol, Glucose, Lactate, Haematocrit. Resposta fisiológica de estresse em pirarucu (Arapaima gigas) submetido ao manuseio RESUMOO pirarucu (Arapaima gigas) é um peixe de respiração aérea obrigatória da bacia Amazônica. Estudo prévio demonstrou que juvenis de pirarucu apresentam um período de latência em sua resposta de estresse a um estresse moderado (transporte). Desta forma, o objetivo deste estudo foi verificar os efeitos de uma exposição aérea prolongada no lactato, glicose, cortisol, hematócrito, hemoglobina e glicogênio do fígado em pirarucu. Trinta e seis peixes foram manuseados com um puçá e expostos ao ar por 75-min. Seis peixes foram amostrados antes do manuseio e 0, 6, 24, 48, e 96h após o manuseio. O cortisol, lactato e hematócrito aumentaram após o manuseio, retornando para valores semelhantes ao de antes do manuseio na amostragem seguinte (6 h após o manuseio). A glicose aumentou significativamente após o manuseio e o aumento se manteve até a amostragem de 24h. Não houve mudança significativa na hemoglobina e no glicogênio como conseqüência do manuseio. Os resultados demonstram que o pirarucu apresenta uma rápida resposta e uma rápida recuperação quando exposto a um estressor agudo e sugerem que o pirarucu não usa suas reservas de glicogênio nesta situação. Os resultados indicam que o pirarucu apresenta uma resposta fisiológica de estresse similar em magnitude com muitos outros teleósteos, incluindo os salmonídeos.

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Section: Discussionmentioning

confidence: 98%

“…A few studies exposed fish for more than 10-min, like Bayunova et al (2002) that exposed Russian sturgeon males (Acipenser gueldenstaedtii) for 30-min in the air. In this study pirarucu were chased, netted and air exposed for 75-min, and did not demonstrate any mortality.…”

Section: Discussionmentioning

confidence: 99%

Physiological responses of pirarucu (Arapaima gigas) to acute handling stress

Gomes

2007

Acta Amaz.

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“…Blood samples were rapidly collected from the caudal vein using heparinized syringes. Plasma was immediately detached after centrifuging blood samples in 3000 rpm for 10 min (Cataldi et al 1998) and then stored at -20ºC (Bayunova et al 2002) until thyroid hormones and total protein analyses were performed. Then six fish individuals per treatment were rapidly euthanized, after which whole fish body-, liver, viscera-, and digestive tract weights were recorded for the determination of HSI, VSI, and DSI.…”

Section: Methodsmentioning

confidence: 99%

The Effect of Short-term Starvation on Some Physiological and Morphological Parameters in Juvenile Siberian Sturgeon, Acipenser Baerii (Actinopterygii: Acipenseriformes: Acipenseridae)

Ashouri¹,

Yavari²,

Bahmani³

et al. 2013

Acta Icth et Piscat

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“…Also, the T and 11-KT levels showed increasing trends during gonadal development of giant sturgeon, Huso huso (L., 1758), Russian sturgeon, Acipenser gueldenstaedtii Brandt, 1833 and stellate males (Barannikova et al 2004). Cortisol (C) levels reflect generally the level of stress in fish, including sturgeons (Pickering 1989;Barton et al 1998;Belanger et al 2001;Bayunova et al 2002). Apart from this function, C has been considered as an endocrine component of the reproductive system in teleost fish (Billard et al 1981) and in sturgeon BS levels of C significantly increased after pituitary preparation (PP) treatment in BS .…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of milt quality and steroid levels in blood and seminal fluid of Persian sturgeon males, Acipenser persicus during final maturation induced by hormonal treatment

2010

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Steroids both in seminal fluid (SF) and blood serum (BS) as well as the milt quality (sperm motility and sperm production) were investigated during final maturation of Persian sturgeon. The BS levels of testosterone (T), 11-Ketotestosterone (11-KT), progesterone (P), 17α,20β,21-trihydroxy-4-pregnen-3-one (20βS), cortisol (C) and 17α,hydroxyprogesterone (OHP) elevated after pituitary preparation (PP) treatment and then decreased during stripping period for spermiating males. Such elevations did not occur for non-spermiating individuals and steroids remained in basal levels after PP treatment until the end of stripping period. For both groups (spermiating and non-spermiating fish), the BS levels of 17α,20β-dihydroxy-4-pregnen-3-one (DHP) did not show significant changes during experiment. During stripping period, the values of all tested steroids were significantly lower in SF than in BS of spermiating males. SF levels of 20βS and 11-KT showed a decreasing trend and the other steroids were unchanged during this period. Significant positive correlations were found between the values of 20βs and 11-KT in BS with their levels in SF. Also, BS and SF levels of 20βs and 11-KT were positively correlated with sperm motility characteristics (percentage and duration of motility) and sperm production (sperm density and milt volume), respectively. The results showed the probable involvement of 20βs, P, OHP, T, 11-KT and C in final maturation of Persian sturgeon, especially 20βs and 11-KT had good correlations with qualitative parameters of milt. The lower levels of steroids in SF than those in BS might also be essential for viability of Persian sturgeon spermatozoa. Probably, there are mechanisms that stabilize the concentrations of a number of hormones in the SF.

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Sturgeon stress reactions in aquaculture

Cited by 124 publications

References 12 publications

Physiological responses of pirarucu (Arapaima gigas) to acute handling stress

Physiological responses of pirarucu (Arapaima gigas) to acute handling stress

The Effect of Short-term Starvation on Some Physiological and Morphological Parameters in Juvenile Siberian Sturgeon, Acipenser Baerii (Actinopterygii: Acipenseriformes: Acipenseridae)

Comparative analysis of milt quality and steroid levels in blood and seminal fluid of Persian sturgeon males, Acipenser persicus during final maturation induced by hormonal treatment

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