Results 31 to 40 of about 5,713 (198)
Sex-change chemicals and their influence on the brain. [PDF]
, 2001 The potential for man-made chemicals to mimic or antagonise natural hormones is a controversial issue, but one for which increasing amounts of evidence are being gathered worldwide.
Harris, CA
core +3 more sources
Integrative Zoology, EarlyView.In Alpine chamois, the complete wear of the first molar coincides with the beginning of senescence and the progress of tooth wear on calcareous substrate is slower than the one on other substrates, increasing life expectancy. Thus, the first molar wear may actually be considered as an effective descriptor of senescence stage.
Roberta Chirichella, Marco Apollonio
wiley +1 more source
Integrative Zoology, EarlyView.Sexual cannibalism (SC), where one mating partner consumes the other in the context of mating, is especially prevalent among spiders. However, the evolution of SC in spiders is still not fully understood. We review key hypotheses for SC and explore how female‐initiated SC has driven the evolution of various male counter‐adaptations to mitigate its ...
Simona Kralj‐Fišer +3 more
wiley +1 more source
Hermaphroditism and intersexuality in Portuguese medical photograph
Comunicação e Sociedade, 2017 The interest harboured by the Visual Culture of Medicine in photographic images of hermaphrodites dates back in Portugal to the birth of medical photography, with the photographic recording of a case of male hermaphroditism, that was studied in 1864 by ...
António Fernando Cascais
doaj +1 more source
Population screening and transmission experiments indicate paramyxid-microsporidian co-infection in Echinogammarus marinus represents a non-hyperparasitic relationship between specific parasite strains [PDF]
, 2018 Phylogenetically distant parasites often infect the same host. Indeed, co-infections can occur at levels greater than expected by chance and are sometimes hyperparasitic.
Ford, Alex T. +4 more
core +5 more sources
Extreme Silk Toughness in Caerostris Spiders Is Limited to Adult Females
Integrative Zoology, EarlyView.We ask whether species with exceptionally tough silk, like Caerostris bark spiders, show different developmental patterns in silk toughness between ontogenetic stages and sexes. We found that only large females produce exceptionally tough silk with higher initial stiffness, while juvenile females as well as adult and juvenile males produce inferior ...
Matjaž Gregorič +4 more
wiley +1 more source
Analiza i EgzystencjaIn my paper, I attempt a phenomenological analysis of the lived experience of intersexuality, which I view from the perspective of the problem of indeterminacy concerning the horizon of the givenness of homeworld founded on the broader basis of the pre ...
Anna Alichniewicz
doaj +1 more source
A case of intersex occurrence in Steindachneridion parahybae (Steindachner, 1877) (Siluriformes: Pimelodidae) under captivity condition: A cytogenetic and morphological study [PDF]
, 2016 Poco se sabe sobre la biología reproductiva de Steindachneridion parahybae , una especie de teleósteo gonocorístico en peligro de extinción que habita la cuenca del río Paraíba do Sul y en éste trabajo se describe por primera vez la aparición de ...
Caneppele, Danilo +4 more
core +2 more sources
Integrative Zoology, EarlyView.Integrating comparative spectrometry, image analysis, and thermal modeling, we reveal that (1) females optimize crypsis via background matching, (2) males prioritize high‐contrast disruptive patterning at a significant thermoregulatory cost (reduced solar heat gain), and (3) habitat‐specific monomorphism in Diploderma slowinskii underscores ecological ...
Yuning Cao, Lin Shi, Yin Qi
wiley +1 more source
Frontiers in Marine ScienceThe redclaw crayfish is sexually dimorphic, with males preferring females in terms of growth rate and size. Currently, the molecular mechanism of sexual dimorphism is not well understood in crustaceans, and studies on the joint analysis of the gonadal ...
Ruiqi He +9 more
doaj +1 more source