Overlap of Female Reproductive Cycles Explains Shortened Interclutch Interval in a Lizard with Invariant Clutch Size (Squamata: Gekkonidae: Paroedura picta)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F12%3A10129463" target="_blank" >RIV/00216208:11310/12:10129463 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1086/666906" target="_blank" >http://dx.doi.org/10.1086/666906</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1086/666906" target="_blank" >10.1086/666906</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Overlap of Female Reproductive Cycles Explains Shortened Interclutch Interval in a Lizard with Invariant Clutch Size (Squamata: Gekkonidae: Paroedura picta)

Popis výsledku v původním jazyce

Variable clutch size is unambiguously an ancestral state in rep- tiles. Only several lizard lineages have evolved so-called invari- ant clutch size, where all females lay just one or two eggs per clutch. This mode of reproduction is characteristic for geckos. In some gecko lineages, decreased fecundity in a single clutch is compensated by conspicuous shortening of interclutch in- tervals. The proximate mechanism of high clutch frequency in these geckos is not known. Here, we document that three sub- sequently laid clutches develop simultaneously in females of the Madagascar ground gecko (Paroedura picta). The extremely short interclutch intervals in this species-even as short as a week-thus could be attributed to the overlap of female re- productive cycles. Such overlap should be associated with al- tered female hormonal cycles. Based on measurements of hor- monal levels, we suggest that cycles of estradiol and progesterone during reproductive cycles of females in P. picta are largely

Název v anglickém jazyce

Overlap of Female Reproductive Cycles Explains Shortened Interclutch Interval in a Lizard with Invariant Clutch Size (Squamata: Gekkonidae: Paroedura picta)

Popis výsledku anglicky

Variable clutch size is unambiguously an ancestral state in rep- tiles. Only several lizard lineages have evolved so-called invari- ant clutch size, where all females lay just one or two eggs per clutch. This mode of reproduction is characteristic for geckos. In some gecko lineages, decreased fecundity in a single clutch is compensated by conspicuous shortening of interclutch in- tervals. The proximate mechanism of high clutch frequency in these geckos is not known. Here, we document that three sub- sequently laid clutches develop simultaneously in females of the Madagascar ground gecko (Paroedura picta). The extremely short interclutch intervals in this species-even as short as a week-thus could be attributed to the overlap of female re- productive cycles. Such overlap should be associated with al- tered female hormonal cycles. Based on measurements of hor- monal levels, we suggest that cycles of estradiol and progesterone during reproductive cycles of females in P. picta are largely

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EG - Zoologie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physiological and Biochemical Zoology

ISSN

1522-2152

e-ISSN

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Svazek periodika

85

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

491-498

Kód UT WoS článku

000308067900008

EID výsledku v databázi Scopus

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