Oribatid mites (Acariformes, Sarcoptiformes: Oribatida) in the gills of Salmo spp. (Actinopterygii: Salmonidae) parr – Short communication

Author(s):  
Sergey G. Sokolov ◽  
Vitaly Stolbov ◽  
Denis Kazakov ◽  
Kristina A. Zhukova ◽  
Eugeny P. Ieshko

AbstractLive oribatid mites of the family Malaconothridae were found on Salmo spp. parr caught in the rivers of Northwest Russia. The mites were localised in the gill filaments and enclosed in connective tissue capsules. The encapsulation was accompanied by hyperplasia and displacement of the respiratory epithelium. One mite specimen was an adult female, while all the other specimens were protonymphs. The adult female and one protonymph specimen were identified as Tyrphonothrus sp. Other protonymphs could be identified only at the family level. The obtained partial 18S rDNA sequence of one protonymph was 100% identical to that of Tyrphonothrus maior (NCBI accession No. KY922215). This is the first report of living malaconothrid mites encapsulated in fish gills, and the phenomenon may assume parasitic behaviour. However, the nature of the relationship between the mites and the fish requires further investigations.

2019 ◽  
Vol 36 (11-12) ◽  
pp. 3537-3553 ◽  
Author(s):  
Katherine B. Ehrlich ◽  
Michelle R. vanDellen ◽  
Julia W. Felton ◽  
C. W. Lejuez ◽  
Jude Cassidy

Husbands and wives often provide different reports about the qualities of their relationship—a pattern of reporting that is often discounted as measurement error. In the present study, we tested three research questions related to perceptions of marital conflict in a sample of 123 married couples. First, we tested whether individual and partner attachment and depressive symptoms were associated with reports of conflict. Then, we examined whether these characteristics also explain absolute and directional discrepancies in reports of marital conflict. Finally, we examined how discrepancies in reports of marital conflict might be related to discrepancies in other dyadic reports within the family. Analyses revealed that individuals’ attachment avoidance and anxiety, but not depressive symptoms, were linked to their own perceptions of marital conflict. Further, partners’ attachment anxiety was positively associated with one’s own perceptions of marital conflict. Additional analyses revealed that wives’ attachment avoidance was positively associated with absolute discrepancies about conflict. Wives’ attachment avoidance predicted directional discrepancies, such that they reported relatively more conflict than their husbands reported as their attachment avoidance increased. Husbands’ attachment anxiety was marginally associated with overreporting conflict relative to their wives’ reports. Finally, discrepancies in spouses’ reports of marital conflict were associated with mother–adolescent and father–adolescent discrepancies in reports of parent–adolescent conflict. Results highlight the importance of measuring both partners’ perceptions of the relationship in order to capture meaningful variation in multi-informant reports.


2000 ◽  
Vol 30 (12) ◽  
pp. 1858-1866 ◽  
Author(s):  
Øystein Johnsen ◽  
Tore Skrøppa

We have compared bud set and frost hardiness among Norway spruce (Piceas abies (L.) Karst.) provenances and families in two cold-acclimation regimes in a phytotron; low light intensity and high night temperatures (LL-HNT), and high light intensity and low night temperatures (HL-LNT) under shortening day lengths. Nine provenances from 59-66°N and altitude 100-700 m within Norway, and nine open-pollinated families from a single stand (61°N, 270 m elevation) were used. Both provenances and families started bud set and frost hardening earlier in LL-HNT than in HL-LNT. Correlations between the same trait expressed in two regimes were high for both bud set and hardiness at the provenance level and slightly lower at the family level. The variation among family means in bud set and hardiness was large. The differences found between the family extremes were up to 75% of those found between provenance extremes. The relationship between bud set and frost hardiness was strong among the provenance means within both environments (r = 0.92) but weak for the families (r = 0.22-0.44). Causal factors influencing phenotypic variation within traits and covariation among traits may differ for provenances and families within stands. The strong relationships among traits that are found at the provenance level cannot be generalized to the levels of families or clones.


2003 ◽  
Vol 35 (2) ◽  
pp. 151-156 ◽  
Author(s):  
Matthias Schultz ◽  
Burkhard Büdel

AbstractThe systematic position of the lichen genus Heppia in the order Lichinales was investigated. 18S rDNA sequence data were analyzed using a Bayesian approach to infer phylogeny using Markov chain Monte Carlo methods. The Lichinales are divided at family level into the sister groups Lichinaceae and Peltulaceae. The genus Heppia forms a highly supported clade in the family Lichinaceae. It is shown that the genus Heppia is morphologically well circumscribed within the Lichinaceae. As a nomenclatural consequence, the family name Heppiaceae is placed into synonymy under the older name Lichinaceae.


2021 ◽  
Vol 22 (7) ◽  
Author(s):  
ALNUS MEINATA ◽  
MOHAMMAD NA’IEM ◽  
DWI TYANINGSIH ADRIYANTI ◽  
ATUS SYAHBUDIN

Abstract. MeinataA, Na’iem M, Adriyanti DT, Syahbudin A. 2021. Short communication: Leaf architecture of 35 species of Dipterocarpaceae cultivated in Forest Area with Special Purposes in Carita, Banten, Indonesia. Biodiversitas 22: 2952-2960. Dipterocarpaceae is a major commercial timber characterized by high unbranched bole, paired stipules, and winged fruit. The identification process in the family becomes problematic, in cases where the generative organ is absent. Therefore, a new approach needs to be established to address any misidentification leading to improper utilization. This study aims to determine the leaf architecture in 35 species of Dipterocarpaceae cultivated in Forest Area with Special Purposes (KHDTK) Carita, Banten, Indonesia. The ten leaf samples collected were the third and fourth leaves from terminal shoots of a single tree of each species. Subsequently, the data were observed and measured based on the 17 morphological characters. Each character was then scored and analyzed using multivariate analyses cluster to determine the relationship between species. Dipterocarpaceae generally has pinnate leaf category, geniculate petiole, and entire margin. Furthermore, the phenon line in the dendrogram is cut at 0.695 similarity level to establish meaningful interpretation. The 35 species observed were grouped into 4 major clusters. Small leaf group, inconsistent tertiary vein pattern group, symmetrical leaves with cordate base leaf group, and other groups that do not resemble mentioned characters. The key determination comprised 34 couplets with three characters repeated due to limited descriptors.


1995 ◽  
Vol 40 (3) ◽  
pp. 150-153 ◽  
Author(s):  
Renée Fugère ◽  
Andréa D'élia ◽  
Robert Philippe

This paper compares two groups of adult female offenders involved in shoplifting and fraudulent behaviour. Twenty women were studied whose first offenses occurred in their mid-life period. The major findings conclude that an unresolved mourning or loss in the context of high stress and depression is one of the commonalities in the two groups. Another commonality is that a defined classical role for these women is conflictual and the relationship established with their spouses is a repetition of their relationship with their father. The authors suggest that these types of acting out in general are a depressive equivalent, and a larger sample could duplicate the findings and collect more precise data about the nature of the relationship in the family of origin to help these women feel better in their social role.


Nutrients ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 2344 ◽  
Author(s):  
Verjans-Janssen ◽  
Van Kann ◽  
Kremers ◽  
Vos ◽  
Jansen ◽  
...  

Background: Parents influence their children’s nutrition behavior. The relationship between parental influences and children’s nutrition behavior is often studied with a focus on the dyadic interaction between the parent and the child. However, parents and children are part of a broader system: the family. We investigated the relationship between the family nutrition climate (FNC), a family-level concept, and children’s nutrition behavior. Methods: Parents of primary school-aged children (N = 229) filled in the validated family nutrition climate (FNC) scale. This scale measures the families’ view on the consumption of healthy nutrition, consisting of four different concepts: value, communication, cohesion, and consensus. Parents also reported their children’s nutrition behavior (i.e., fruit, vegetable, water, candy, savory snack, and soda consumption). Multivariate linear regression analyses, correcting for potential confounders, were used to assess the relationship between the FNC scale (FNC-Total; model 1) and the different FNC subscales (model 2) and the child’s nutrition behavior. Results: FNC-Total was positively related to fruit and vegetable intake and negatively related to soda consumption. FNC-value was a significant predictor of vegetable (positive) and candy intake (negative), and FNC-communication was a significant predictor of soda consumption (negative). FNC-communication, FNC-cohesion, and FNC-consensus were significant predictors (positive, positive, and negative, respectively) of water consumption. Conclusions: The FNC is related to children’s nutrition behavior and especially to the consumption of healthy nutrition. These results imply the importance of taking the family-level influence into account when studying the influence of parents on children’s nutrition behavior. Trial registration: Dutch Trial Register NTR6716 (registration date 27 June 2017, retrospectively registered), METC163027, NL58554.068.16, Fonds NutsOhra project number 101.253.


2013 ◽  
Vol 18 (1) ◽  
pp. 59-69 ◽  
Author(s):  
Isabelle Albert ◽  
Dieter Ferring ◽  
Tom Michels

According to the intergenerational solidarity model, family members who share similar values about family obligations should have a closer relationship and support each other more than families with a lower value consensus. The present study first describes similarities and differences between two family generations (mothers and daughters) with respect to their adherence to family values and, second, examines patterns of relations between intergenerational consensus on family values, affectual solidarity, and functional solidarity in a sample of 51 mother-daughter dyads comprising N = 102 participants from Luxembourgish and Portuguese immigrant families living in the Grand Duchy of Luxembourg. Results showed a small generation gap in values of hierarchical gender roles, but an acculturation gap was found in Portuguese mother-daughter dyads regarding obligations toward the family. A higher mother-daughter value consensus was related to higher affectual solidarity of daughters toward their mothers but not vice versa. Whereas affection and value consensus both predicted support provided by daughters to their mothers, affection mediated the relationship between consensual solidarity and received maternal support. With regard to mothers, only affection predicted provided support for daughters, whereas mothers’ perception of received support from their daughters was predicted by value consensus and, in the case of Luxembourgish mothers, by affection toward daughters.


2012 ◽  
Vol 3 (5) ◽  
pp. 29-30 ◽  
Author(s):  
Bidyut Kumar Jana ◽  
◽  
Sobhan Kumar Mukherjee

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