Role of lipids in the physiology of the testis of<i>Rana esculenta</i>: Annual changes in the lipid and protein content of the liver, fat body, testis and plasma

Iela, L.; Milone, M.; Caliendo, Marco; Rastogi, Rakesh K.; Chieffi, G.

doi:10.1080/11250007909440272

Cited by 14 publications

(7 citation statements)

References 16 publications

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“…They also demonstrated that both lipidic and proteic extracts of the fat bodies are irnportant in the maintenance of gonadal processes. In addition, seasonal variations of lipids and proteins in the fat body, liver, plasma and gonads of both male and fema-Ie frogs have been correlated with annual gonadal activity (Milone et al, 1978 a, b, c;Iela et al, 1979). Our observations suggested a possible correlation between liver, fat body and gonadal lipid metabolism (see also Caliendo et al, 1978).…”

Section: Introductionsupporting

confidence: 59%

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Seasonal lipid composition in the liver, fat body and gonads ofRana esculenta

Milone¹,

Caliendo²,

Rastogi³

et al. 1983

Bolletino di zoologia

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Seasonal changes are described in the lipid of liver, fat body and gonads of the frog. Analysis reveals that most of the lipid classes observed are present in the fat body and gonads in hiarch. The testis and the female fat body show the most variable pattern according to the season. These data support the hypothesis that both the liver and fat body are involved in gonadal control and that this interaction modifies seasonally. ACKNOWLEDGEhlENTS Financial aid from the Consiglio Nazionale delle Ricerche (finalized project "Biolopia della Riproduzione") and hlinistero della Pubblica Istruzione is gratefully acknomleged.

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Section: Introductionsupporting

confidence: 59%

“…Animals: 10 specimens of adult Rana ESCIIlerzta per month/year mere caught near Naples over the 3 months of hlarch, July and October, during 1978, 1979, 1980and 1981 They were killed by decapitation, and fat bodies, testes/ovaries and liver were collected from freshly captured frogs and weighed (Table I).…”

Section: Hlaterials and Hlethodsmentioning

confidence: 99%

Seasonal lipid composition in the liver, fat body and gonads ofRana esculenta

Milone¹,

Caliendo²,

Rastogi³

et al. 1983

Bolletino di zoologia

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“…3c) no significant differences were found among different experimental groups. It should be noted that the protein content of testes from animals collected in July is lower than that of those collected in January (lela, Caliendo, Rastogi & Chieffi, 1979). The high basal testosterone production of July samples is therefore an artifact depending on the gonadal involution that occurs during this period.…”

Section: Seasonal Profile Of Testosteronementioning

confidence: 90%

Seasonal testosterone profile and testicular responsiveness to pituitary factors and gonadotrophin releasing hormone during two different phases of the sexual cycle of the frog (Rana esculenta)

Pierantoni¹,

Iela²,

d’Istria³

et al. 1984

Journal of Endocrinology

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Plasma and testicular testosterone concentrations in the frog, Rana esculenta, were studied by radioimmunoassay and showed similar seasonal fluctuations. The increase in testicular androgen during November preceded that occurring in the plasma by 2 months. Pituitary products and gonadotrophin releasing hormone, and the responsiveness of the testis to these substances play an important role in determining the hormone profile.

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“…Размеры и упитанность сеголетков амфибий формируются под воздействие многокомпонентного комплекса факторов , который включает условия развития головастиков в водоёме Morey, Reznick, 2001;Richter-Boix et al, 2006;M et al, 2009;Amburgey et al, 2012;Sz et al, 2017), в том числе наличие в нем хищников (Vo nesh, Warkentin, 2006;Indermaur et al, 2010;Marino Jr., Werner, 20 3;, степень зараженности паразитами (Goater, 1994; Ma -árquez-García ékely -1 ri no Jr., Werner, 20 3) и доступность пищи . Происходящие изменения климата сопровождаются существенным и негативным для популяций амфибий преобразованием гидрологических и погодных факторов.…”

Section: Introductionunclassified

Body Size and Condition Dynamics of Pelobates fuscus (Anura, Pelobatidae) Metamorfs under Transphormation of Floodplain Lakes Hydrological Regime

Yermokhin¹,

Tabachishin²

2018

CSH

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The long-term dynamics of size and weight characteristics and body condition of Pelobates fuscus metamorphs in five local populations of the Medveditsa river floodplain (Saratov region) are analyzed. The limits of changes in body length, live and dry weight, and the body condition index (W/SVL) of males and females were established. In 2009 -2018 the size and weight parameters of the P. fuscus metamorphs had a significant level of interannual variation. The body length was 21.0 to 44.0 mm in males and 22.1 to 44.0 mm in females. The weight of live individuals ranged from 1.05 to 13.34 g in males and from 1.28 to 13.65 g in females. The water content in the body reached 80% (on average), and the dry weight was 0.124 -2.979 g and 0.155 -3.256 g for males and females, respectively. The body condition of metamorphs in live weight was 44.1 -305.2 mg/mm in males and 50.6 -342.1 mg/mm in females, while that in dry weight was 4.6 -71.4 and 3.9 -77.0 mg/mm for males and females, respectively. A significant effect of the water content of the lakes on these parameters was found. All indicators had their highest values in years with high floods and the maximum filling of lake basins with water (2012, 2018), and the smallest ones were observed in dry years, accompanied by a sharp decrease in their volume and drying (2009). The lowest variability of the indicators was established in the populations of the lakes operating in the regime of permanent waterbodies, the highest one was in temporary waterbodies. The data obtained confirm our hypothesis of a low level of exchange of individuals between populations, which contributes to the emergence of local adaptations to features of the hydrological regime of a particular waterbody.

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Role of lipids in the physiology of the testis ofRana esculenta: Annual changes in the lipid and protein content of the liver, fat body, testis and plasma

Cited by 14 publications

References 16 publications

Seasonal lipid composition in the liver, fat body and gonads ofRana esculenta

Seasonal lipid composition in the liver, fat body and gonads ofRana esculenta

Seasonal testosterone profile and testicular responsiveness to pituitary factors and gonadotrophin releasing hormone during two different phases of the sexual cycle of the frog (Rana esculenta)

Body Size and Condition Dynamics of Pelobates fuscus (Anura, Pelobatidae) Metamorfs under Transphormation of Floodplain Lakes Hydrological Regime

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