scholarly journals Natural history and courtship behavior in Tengella perfuga Dahl, 1901 (Araneae: Zoropsidae)

2017 ◽  
Vol 45 (2) ◽  
pp. 166 ◽  
Author(s):  
Rachael E. Mallis ◽  
Kelly B. Miller
Keyword(s):  
Natural History ◽  
Courtship Behavior

Natural history and behavior of Chymomyza mycopelates and C. exophthalma (Diptera: Drosophilidae), and allometry of structures used as signals, weapons, and spore collectors

2002 ◽  
Vol 134 (5) ◽  
pp. 667-687 ◽  
Author(s):  
William G. Eberhard
Keyword(s):  
Natural History ◽  
Courtship Behavior ◽  
Head Width ◽  
Visual Displays ◽  
Positive Allometry ◽  
Display Devices ◽  
Aggressive Interactions ◽  
Theoretical Predictions ◽  
Male Head ◽  
And Behavior

AbstractMales of Chymomyza mycopelates Grimaldi and Chymomyza exophthalma Grimaldi battled at sites where females fed and mated (but did not oviposit). Both sexes in the two species waved their brightly marked front legs during aggressive interactions, and males used these legs to strike and grasp opponents forcefully. During intense battles, male C. mycopelates also butted or pushed with their heads, whereas male C. exophthalma used their more strikingly wide heads to threaten with stereotyped displays, during which they also held their front legs folded against the sides of their eyes. Courtship behavior by male C. mycopelates involved tactile and perhaps visual displays with the tips of their front legs. Both species also fed by sweeping their front legs over the surface of fruiting fungi and by removing the spores from their legs with their mouthparts. Although male head width in C. exophthalma showed positive allometry, portions of the front legs that were used as signals and as weapons did not, and thus were not in accord with theoretical predictions that weapons and display devices would have steeper allometries.

scholarly journals A new reproductive mode in anurans: Natural history of Bokermannohyla astartea (Anura: Hylidae) with the description of its tadpole and vocal repertoire

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0246401
Author(s):  
Leo Ramos Malagoli ◽  
Tiago Leite Pezzuti ◽  
Davi Lee Bang ◽  
Julián Faivovich ◽  
Mariana Lúcio Lyra ◽  
...  
Keyword(s):  
Natural History ◽  
Courtship Behavior ◽  
Reproductive Mode ◽  
Advertisement Call ◽  
Vocal Repertoire ◽  
Brazilian Atlantic Forest ◽  
Oral Disc ◽  
History Of ◽  
Epiphytic Bromeliads ◽  
Heavy Rains

Anurans have the greatest diversity of reproductive modes among tetrapod vertebrates, with at least 41 being currently recognized. We describe a new reproductive mode for anurans, as exhibited by the Paranapiacaba Treefrog, Bokermannohyla astartea, an endemic and poorly known species of the Brazilian Atlantic Forest belonging to the B. circumdata group. We also describe other aspects of its reproductive biology, that are relevant to understanding the new reproductive mode, such as courtship behavior, spawning, and tadpoles. Additionally, we redescribe its advertisement call and extend its vocal repertoire by describing three additional call types: courtship, amplectant, and presumed territorial. The new reproductive mode exhibited by B. astartea consists of: (1) deposition of aquatic eggs in leaf-tanks of terrestrial or epiphytic bromeliads located on or over the banks of temporary or permanent streams; (2) exotrophic tadpoles remain in the leaf-tanks during initial stages of development (until Gosner stage 26), after which they presumably jump or are transported to streams after heavy rains that flood their bromeliad tanks; and (3) tadpole development completes in streams. The tadpoles of B. astartea are similar to those of other species of the B. circumdata group, although with differences in the spiracle, eyes, and oral disc. The vocal repertoire of B. astartea exhibits previously unreported acoustic complexity for the genus. Bokermannohyla astartea is the only bromeligenous species known to date among the 187 known species within the tribe Cophomantini. We further discuss evolutionary hypotheses for the origin of this novel reproductive mode.

How is the moral stance related to the intentional stance and group thinking?

2020 ◽  
Vol 43 ◽  
Author(s):  
Hannes Rakoczy
Keyword(s):  
Natural History ◽  
Social Cognitive ◽  
Intentional Stance ◽  
Cognitive Capacities ◽  
Shared Intentionality ◽  
History Of ◽  
Group Thinking ◽  
Moral Stance

Abstract The natural history of our moral stance told here in this commentary reveals the close nexus of morality and basic social-cognitive capacities. Big mysteries about morality thus transform into smaller and more manageable ones. Here, I raise questions regarding the conceptual, ontogenetic, and evolutionary relations of the moral stance to the intentional and group stances and to shared intentionality.

On the assembly and structural modulation of lens fiber junctions

1984 ◽  
Vol 42 ◽  
pp. 110-113
Author(s):  
E.L. Benedetti ◽  
I. Dunia ◽  
Do Ngoc Lien ◽  
O. Vallon ◽  
D. Louvard ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Natural History ◽  
Intercellular Junctions ◽  
Eye Lens ◽  
Membrane Domains ◽  
Functional Polymorphism ◽  
Lens Fiber ◽  
The Past ◽  
Structural Modulation ◽  
Biochemical Difference

In the eye lens emerging molecular and structural patterns apparently cohabit with the remnants of the past. The lens in a rather puzzling fashion sums up its own natural history and even transient steps of the differentiation are memorized. A prototype of this situation is well outlined by the study of the lenticular intercellular junctions. These membrane domains exhibit structural, biochemical and perhaps functional polymorphism reflecting throughout life the multiple steps of the differentiation of the epithelium into fibers and of the ageing process of the lenticular cells.The most striking biochemical difference between the membrane derived from the epithelium and from the fibers respectively, concerns the presence of the 26,000 molecular weight polypeptide (MP26) in the latter membranes.

Natural history of helicobacter pylori infection from infancy to adulthood: A 21-year follow-up cohort study

2001 ◽  
Vol 120 (5) ◽  
pp. A128-A128 ◽  
Author(s):  
H MALATY ◽  
D GRAHAM ◽  
A ELKASABANY ◽  
S REDDY ◽  
S SRINIVASAN ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Cohort Study ◽  
Natural History ◽  
Helicobacter Pylori Infection ◽  
History Of

Incidence and natural history of HCV infection in Northern Italy: Results of an epidemiological study

2001 ◽  
Vol 120 (5) ◽  
pp. A366-A366
Author(s):  
C MAZZEO ◽  
F AZZAROLI ◽  
A COLECCHIA ◽  
S DISILVIO ◽  
A DORMI ◽  
...  
Keyword(s):  
Natural History ◽  
Epidemiological Study ◽  
Northern Italy ◽  
Hcv Infection ◽  
History Of

232: Natural History of Treated Biochemical Recurrence after Radical Prostatectomy for Prostate Cancer

2007 ◽  
Vol 177 (4S) ◽  
pp. 77-78
Author(s):  
Christopher R. Porter ◽  
Jochen Walz ◽  
Andrea Gallina ◽  
Claudio Jeldres ◽  
Koichi Kodama ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Radical Prostatectomy ◽  
Natural History ◽  
Biochemical Recurrence ◽  
History Of
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