Results 21 to 30 of about 140,355 (259)
Neotropical Ichthyology, 2019 This study provides information on the reproductive biology of the Brazilian blind electric ray Benthobatis kreffti, endemic to southern and southeastern Brazil. Individuals were caught by bottom trawl carried out in 2003 and 2007, at 492-501 m depth off
Mariana F. Martins, Otto B. F. Gadig
doaj +1 more source
The European Zoological Journal, 2021 The shovelnose guitarfish Pseudobatos productus is a major species in batoid catch on the north-western coasts of Mexico. Our goal was to describe the reproductive biology of this species, including morphometric and histological analysis of the gonads ...
D. Juaristi-Videgaray +5 more
doaj +1 more source
THE ANALYSIS OF REACTION NORMS FOR AGE AND SIZE AT MATURITY USING MATURATION RATE MODELS [PDF]
Evolution, 2005 Reaction norms for age and size at maturity are being analyzed to answer important questions about the evolution of life histories. A new statistical method is developed in the framework of time-to-event data analysis, which circumvents shortcomings in currently available approaches.
Tom J M, Van Dooren +2 more
openaire +2 more sources
BMC Zoology, 2023 This study investigated the reproductive traits of the hermaphroditic four-finger threadfin, Eleutheronema tetradactylum, along the coasts of Thailand during January to December 2021.
Kay Khine Soe +7 more
doaj +1 more source
MEASURING PROBABILISTIC REACTION NORMS FOR AGE AND SIZE AT MATURATION [PDF]
Evolution, 2002 We present a new probabilistic concept of reaction norms for age and size at maturation that is applicable when observations are carried out at discrete time intervals. This approach can also be used to estimate reaction norms for age and size at metamorphosis or at other ontogenetic transitions.
Heino, M., Dieckmann, U., Godoe, O.R.
openaire +5 more sources
Journal of Limnology, 2011 In a detailed field study covering three years, population dynamics, life history shifts and reproductive patterns of a population of Daphnia galeata were investigated in relation to food availability and dynamics of young of the year fish, the main ...
Stephan HÜLSMANN
doaj +1 more source
Shape, size, and maturity trajectories of the human ilium
American Journal of Physical Anthropology, 2014 ABSTRACTMorphological traits of the ilium have consistently been more successful for juvenile sex determination than have techniques applied to other skeletal elements, however relatively little is known about the ontogeny and maturation of size and shape dimorphism in the ilium.
Wilson, Laura AB +4 more
openaire +3 more sources
Scientia Marina, 2012 The gonadal maturation of Atrina maura was examined by means of histological analysis and quantitative criteria. Particular features not previously described for this species are reported in this study: in both males and females the undifferentiated ...
Marian A. Camacho-Mondragón +2 more
doaj +1 more source
UMBILICAL CORD SIZE AND FETAL MATURATION [PDF]
Pediatric Research, 1974 Our own random clinical observations suggested that premature infants with respiratory distress syndrome (RDS) have larger umbilical cords (UC) than term infants and prematures without RDS. That UC size might distinguish RDS susceptible prematures from prematures with prenatal stress sufficient to produce pulmonary biochemical maturation (no RDS), was ...
C Joan Richardson +2 more
openaire +1 more source
Frontiers in Dentistry, 2020 Objectives: This study aimed to assess the relationship of frontal sinus height and width with the cervical vertebral maturation (CVM) for assessment of skeletal maturity. Materials and Methods: This retrospective study evaluated lateral cephalograms of 132 patients between 8 to 21 years, including 66 males and 66 females.
Sara Alijani +3 more
openaire +3 more sources