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Feeding, body condition and reproductive investment of Astyanax intermedius (Characiformes, Characidae) in relation to rainfall and temperature in a Brazilian Atlantic Forest stream
(Wiley-Blackwell, 2015-01-01)
Life history theory seeks to explain how environmental variation selects for patterns of investment in growth and survival relative to production and survival of offspring. Seasonal variations in rainfall and temperature ...
Sex change and reproductive output of the protandric shrimp Merguia rhizophorae (Rathbun, 1900) (Decapoda, Merguiidae)
(2021-01-01)
The aim of this study was to confirm the type of protandry adopted by M. rhizophorae and to describe the size at which sex change occurs in order to test predictions of sex allocation theory. The reproductive output also ...
Dimorfismo sexual e investimento reprodutivo em Fissidens Hedw, (Fissidentaceae, Bryophyta)
(Universidade Federal de PernambucoUFPEBrasilPrograma de Pos Graduacao em Biologia Vegetal, 2019)
Single cell chromosome rearrangements in individuals with reproductive failure
(1999)
Single cell chromosome rearrangements (SCCR) are incidental findings in cell cultures. Nevertheless, some authors have implicated them in habitual abortion. Ninety individuals classified in four groups were prospectively ...
Single cell chromosome rearrangements in individuals with reproductive failure
(1999)
Single cell chromosome rearrangements (SCCR) are incidental findings in cell cultures. Nevertheless, some authors have implicated them in habitual abortion. Ninety individuals classified in four groups were prospectively ...
Age, growth, and reproductive biology of the Atlantic spadefish Chaetodipterus faber in southern Brazil
(Springer, 2019-01-01)
This is the first study to investigate the age, growth and reproductive biology of the Atlantic spadefish Chaetodipterus faber in southern Brazil. A total of 625 individuals [total length (TL) ranging from 7mm to 510mm] ...
Vigilance patterns of territorial guanacos (Lama guanicoe): The role of reproductive interests and predation risk
(Wiley Blackwell Publishing, Inc, 2008-12)
We conducted focal observations of territorial guanacos, a highly polygynous and social mammal, to compare time budgets between sexes and test the hypothesis that the differences in reproductive interests are associated ...
Heteroquely, laterality, maturity body size and shape variation of males and females of the endemic South American anomuran Aegla quilombola Moraes, Tavares & Bueno, 2017
(2020-01-01)
Aegla quilombola: is an anomuran crab endemic to São Paulo State, Brazil. The present manuscript aims to provide information about sexual dimorphism using geometric morphometrics, as well as information about heterochely, ...
Reproductive biology in a uruguayan population of Elachistocleis bicolor (Guérin-Meneville, 1838) (Anura, Microhylidae)
(Asociación Herpetológica Argentina, 2017)
This paper describes ecological features of the reproductive biology of a population of Elachistocleis bicolor from Uruguay. From a monthly sample obtained throughout a year, we measured mass of the fat bodies and the ...