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PubMed2006

Spawning and parental care in Hoplias malabaricus (Teleostei, Characiformes, Erythrinidae) in the Southern Pantanal, Brazil.

Herein we describe spawning and egg guarding in the erythrinid fish Hoplias malabaricus observed in the southern Pantanal (19 degrees 34' S and 57 degrees 00' W), state of Mato Grosso do Sul, Brazil. Nests were depressions built on sandy soil in flooded areas, and contained a mean of 8,197 +/- 2,204 eggs (N = 4); the mean diameter of eggs was 1.44 +/- 0.09 mm (N = 400). Among 11 nests observed, eight were guarded by males and three by the pair. One male remained in the nest for six days, and two pairs remained guarding the eggs for at least three days before being captured. Females (N = 2) captured in the nest contained oocytes in their ovaries. Our observations suggest that male parental care is the normal form of parental care in H. malabaricus, but biparental care also seems to occur.

Animals↗
PubMed1992

Gender and sex-role differences in young adult reactions towards "newborns" in a pretend situation.

104 college students were asked to fill out a questionnaire on sex-role orientation, act out a scene as a parent with a newborn baby (doll), rate their attitudes toward the baby using a semantic differential scale of 19 adjective pairs, and write an open-ended statement about the baby's future. Analysis indicated few differences in how men and women reacted to or described boy and girl babies and most of the variability in scores could be accounted for by interactions involving sex-role orientation. Sex-stereotyped women typically gave ratings similar to those given by androgynous women while sex-stereotyped men, when they differed from androgynous men, generally gave less positive ratings.

Adolescent↗
PubMed2001

Febrile seizures and parental anxiety: does information help?

AIM OF THE STUDY: To investigate the effect of febrile seizures on the behaviour and emotional situation of parents in order to improve our attitude towards these children and parents in future. METHODS: We analysed 135 questionnaires on parents' behaviour and emotional situation during and after a febrile seizure in their children. RESULTS: Febrile seizures were unknown to 44% of the parents. 121 parents (91%) reported severe anxiety on witnessing the first febrile seizure. In 69% the anxiety was so strong, that the parents believed their child would die. Severe anxiety was significantly associated with lack of knowledge about febrile seizures: 79% (no knowledge of febrile seizures) versus 59% (with knowledge). The level of anxiety appeared to be associated with low educational level, but not with ethnic background or income. CONCLUSIONS: Our study shows that knowledge of febrile seizures among concerned parents in our region remains insufficient. The results are ambiguous. On the one hand we found an association between severe anxiety and lack of knowledge on febrile seizures, suggesting that information prior to the first febrile seizure might reduce the anxiety level and thus lead to appropriate reactions in case of recurrence. On the other hand although parents knew about febrile seizures, they still had very high anxiety levels and would react inappropriately in case of recurrence. Therefore if information is provided to parents, it must be specific, especially about which measures are to be taken or avoided respectively. A prospective study to observe positive and negative effects of preventive information is needed.

Adult↗
PubMed1975

[Inborn orientation procedures during feeding in guillemots (Uria aalge aalge Pont.)].

Guillemots (Uria aalge) swallow fish head first when they are fed, when they pick up fish from the ground and when hunting. The responsible orientation processes in the first two situations are investigated. Experiments on over 300 hand-reared chicks, partly food-naive, showed that when they are fed, swallowing the fish head first results from a combination of orientation processes on the part of the parent and the chick. When picking up fish it results solely from characteristics of the fish. It is explained why the Taxis theory does not seem applicable. Instead of this the study is based on the theory of orientation processes.

Animals↗
PubMed2002

[Difficulties in coping with treatment: causes, solutions].

We present a case of parents who had difficulties accepting their child's treatment (HD chemotherapy and stem cell transplantation) and coping with it. The conversation between the paediatrician and the mother revealed that she feared being dispossessed of her maternal role by the nurses, that constraints would interfere with her relationship with her son, that the medical team would make her feel intellectually, culturally and socially inferior, that the conflict the couple was facing would be exacerbated in this setting. Collaboration between the paediatrician, the nursing staff and the psycho-oncologist allowed these conscious and unconscious elements to be understood. Talking, not conflict nor constraints, served to allay their fears, to avoid inappropriate reactions of the medical team, to preserve the therapeutic alliance. The child accepted this trying treatment because he saw that his parents were reassured about its quality and about preserving their sense of identity and their value. Coping difficulties may stem from fear of treatment (too trying physically and psychologically), from its consequences (destabilisation of the family, the individual's social and professional status, his/her sense of identity), from rekindled old problems that were not adequately solved (jealousy, revolt, trauma, bereavement). Dialogue and team work are necessary to solve them.

Attitude of Health Personnel↗
PubMed1987

Changes in serum corticosterone and testosterone during induced maternal behavior in rats.

Serum corticosterone (Cpd B) and testosterone (T) concentrations were studied during the avoidance phase of artificially induced parental behavior in male rats. Adult rats were exposed to the presence of standard size foster pups for 60 min daily. On day 1 the avoidance behavior characterized by typical burying reaction was accompanied by an elevation of Cpd B and T. The behavioral responses and hormonal changes diminished during the days of repeated exposure. It was found that neither pup-killing nor spontaneous retrieval were dependent on circulating hormones in the male rat. Subcutaneous injection of ACTH 4-10 inhibited extinction of the avoidance and the humoral responses in both female and male animals. Oxytocin failed to exert any influence on the behavioral and hormonal components of the aversive reaction.

Adrenocorticotropic Hormone↗
PubMed1986

Social and hormonal factors influencing infanticide and its suppression in adult male Long-Evans rats (Rattus norvegicus).

In a series of six experiments, the experiential and hormonal factors influencing infanticide in Long-Evans hooded rats were examined. Males, but not females, purchased from a breeder as adults exhibited infanticide at high rates, whereas males reared in the laboratory until adulthood were less likely to be infanticidal. Sexual experience reduced the rate of infanticide in laboratory-reared males, and cohabitation with a female through pregnancy and lactation (including exposure to pups) inhibited infanticide in previously infanticidal males. Fourteen days of cohabitation with a pregnant female following copulation inhibited infanticide in males purchased from a breeder, but copulation without cohabitation and copulation followed by cohabitation with a nonpregnant (ovariectomized) female did not inhibit infanticide. Castration of laboratory-reared males in adulthood did not reduce their rate of infanticide, whereas testosterone implants increased the number of males exhibiting infanticide. The importance of hormonal and experiential factors for controlling infanticide in male rats is discussed.

Aggression↗
PubMed1985

Assessing child-rearing behaviors: a comparison of ratings made by mother, father, child, and sibling on the CRPBI.

This study of the reliability and validity of scales from the Child's Report of Parental Behavior (CRPBI) presents data on the utility of aggregating the ratings of multiple observers. Subjects were 680 individuals from 170 families. The participants in each family were a college freshman student, the mother, the father, and 1 sibling. The results revealed moderate internal consistency (M = .71) for all rater types on the 18 subscales of the CRPBI, but low interrater agreement (M = .30). The same factor structure was observed across the 4 rater types; however, aggregation within raters across salient scales to form estimated factor scores did not improve rater convergence appreciably (M = .36). Aggregation of factor scores across 2 raters yields much higher convergence (M = .51), and the 4-rater aggregates yielded impressive generalizability coefficients (M = .69). These and other analyses suggested that the responses of each family member contained a small proportion of true variance and a substantial proportion of factor-specific systematic error. The latter can be greatly reduced by aggregating scores across multiple raters.

Adolescent↗
PubMed1984

Men and women as parents: sex role orientations, employment, and parental roles with infants.

Mothers' and fathers' sex role orientations and employment situations were examined in connection with their involvement in child-oriented activities using a longitudinal research design. During interviews that took place within 3 months of their wedding dates, 34 couples completed questionnaires that measured their sex role attitudes, masculinity-femininity, and their skills and role preferences for performing a number of child-oriented activities. Approximately 1 year later, after the couples had become parents, they were interviewed about their employment situations and again about their child-care skills and role preferences for performing certain child-care tasks. During the 2- to 3-week period following the second interview, the couples were telephoned on 9 occasions and asked to report on the household tasks, leisure activities, and child-oriented activities they had performed during the 24-hour period that preceded each call. The findings showed that mothers' sex role attitudes before their infants' births predicted their role preferences after their babies were born, and these two factors, as well as mothers' involvement in the paid labor force, were related to the extent of their involvement in child-oriented activities. Mothers' masculinity and femininity, however, were unrelated to their parenting behavior. In contrast, fathers' work involvement was related only to the extent of their leisure activities with children. In addition, fathers' role preferences for performing child-care tasks and their perceived skill at such tasks (as measured both before and after their children's births) were related to the overall extent and the nature of their involvement in child-oriented activities. Fathers' role preferences were somewhat stable from before to after children's births, and fathers' preferences before their children were born predicted the mothers' preferences afterward. Neither fathers' sex-role attitudes nor their masculinity or femininity, however, predicted their activities with infants.

Adult↗
PubMed1993

[Family dynamics of mothers and fathers expecting their first or second child].

This study forms part of the international family dynamics project. The study was carried out in two stages. In stage one the aim was to determine how expectant mothers and fathers view the family's activity on six bipolar dimensions (Barnhill 1979). Family dynamics was studied during the third trimester of pregnancy with both mothers (118) and fathers (118) participating in the study (N = 236). The data were collected by questionnaires, using the Family Dynamics Measure. Most parents (86%) reported that their family functioning was either very good or quite good. Married parents reported more stability, flexibility and clearer communication than cohabiting parents did. Mothers reported more flexibility, mutuality and clearer communication than fathers did. Families expecting their first child found more mutuality, role reciprocity and clearer communication than did families expecting their second child.

Adolescent↗
PubMed1998

Paternal alcohol exposure: developmental and behavioral effects on the offspring of rats.

The effect of paternal alcohol exposure on neurochemical and behavioral parameters was investigated using as a model system glial cells derived from newborn rat brain and cultured for 4 weeks. The total brain neurochemical parameters from rats born to mothers sired by an alcohol treated father were also investigated. Enzymatic markers of nerve cell development (enolase isoenzymes and glutamine synthetase) and the defense system (superoxide dismutase) against free radicals formed during alcohol degradation were measured in order to evaluate nerve cell damage. Behavioral locomotor tests (open-field, novelty-seeking, light/dark) were carried out to show long-lasting effects of paternal alcoholization on the offspring. Behavioral and developmental alterations were found until 1 year of age in the offspring and a significant growth retardation was observed in the males. Our results suggest that paternal alcohol exposure produces developmental and behavioral effects in the offspring. The consequence of either alcohol withdrawal during stage one spermatogenesis, or maternal diet supplementation with manganese during pregnancy were investigated. It was observed that some of the effects of paternal alcohol exposure on the offspring may be reversed by these treatments.

Animals↗