How sexual differences affect locomotor performance and metabolism of the Sword Snake: An integrated view from energetics

2021 ◽  
Author(s):  
J. Lima‐Santos ◽  
J. E. Carvalho ◽  
C. A. Brasileiro
Keyword(s):  
Sexual Differences ◽  
Locomotor Performance

Ontogenetic and sexual differences of thermal biology and locomotor performance in a lacertid lizard, Eremias multiocellata

Zoology ◽  
2013 ◽  
Vol 116 (6) ◽  
pp. 331-335 ◽  
Author(s):  
Xiao-long Tang ◽  
Feng Yue ◽  
Jian-zheng He ◽  
Ning-bo Wang ◽  
Ming Ma ◽  
...  
Keyword(s):  
Sexual Differences ◽  
Locomotor Performance ◽  
Thermal Biology ◽  
Lacertid Lizard ◽  
Eremias Multiocellata

scholarly journals Sexual differences in locomotor performance inTropidurus catalanensislizards (Squamata: Tropiduridae) - body shape, size and limb musculature explain variation between males and females

2016 ◽  
Vol 118 (3) ◽  
pp. 598-609 ◽  
Author(s):  
Renata Brandt ◽  
Fabio Cury de Barros ◽  
Carolina Noronha ◽  
Maria Jose Tulli ◽  
Tiana Kohlsdorf
Keyword(s):  
Body Shape ◽  
Sexual Differences ◽  
Locomotor Performance ◽  
Limb Musculature ◽  
Males And Females

Dealing with hot rocky environments: Critical thermal maxima and locomotor performance in Leptodactylus lithonaetes (Anura: Leptodactylidae)

2019 ◽  
pp. 155-161 ◽  
Author(s):  
Ivan Beltran
Keyword(s):  
Environmental Temperature ◽  
Extreme Temperature ◽  
Effect Of Temperature ◽  
Maximum Speed ◽  
Locomotor Performance ◽  
Extreme Temperatures ◽  
Physiological Limits ◽  
Fitness Consequences ◽  
Thermal Maximum ◽  
Environmental Temperatures

Environmental temperature has fitness consequences on ectotherm development, ecology and behaviour. Amphibians are especially vulnerable because thermoregulation often trades with appropriate water balance. Although substantial research has evaluated the effect of temperature in amphibian locomotion and physiological limits, there is little information about amphibians living under extreme temperature conditions. Leptodactylus lithonaetes is a frog allegedly specialised to forage and breed on dark granitic outcrops and associated puddles, which reach environmental temperatures well above 40 ˚C. Adults can select thermally favourable microhabitats during the day while tadpoles are constrained to rock puddles and associated temperature fluctuations; we thus established microhabitat temperatures and tested whether the critical thermal maximum (CTmax) of L. lithonaetes is higher in tadpoles compared to adults. In addition, we evaluated the effect of water temperature on locomotor performance of tadpoles. Contrary to our expectations, puddle temperatures were comparable and even lower than those temperatures measured in the microhabitats used by adults in the daytime. Nonetheless, the CTmax was 42.3 ˚C for tadpoles and 39.7 ˚C for adults. Regarding locomotor performance, maximum speed and maximum distance travelled by tadpoles peaked around 34 ˚C, approximately 1 ˚C below the maximum puddle temperatures registered in the puddles. In conclusion, L. lithonaetes tadpoles have a higher CTmax compared to adults, suggesting a longer exposure to extreme temperatures that lead to maintain their physiological performance at high temperatures. We suggest that these conditions are adaptations to face the strong selection forces driven by this granitic habitat.

Sexual differences in flower defense and correlated male-biased florivory in a plant-florivore system

Oikos ◽  
2010 ◽  
Vol 119 (11) ◽  
pp. 1848-1853 ◽  
Author(s):  
Kaoru Tsuji ◽  
Teiji Sota
Keyword(s):  
Sexual Differences

Sexual differences in human cranial morphology: is one sex more variable or one region more dimorphic?

2021 ◽  
Author(s):  
Marco Milella ◽  
Daniel Franklin ◽  
Maria Giovanna Belcastro ◽  
Andrea Cardini
Keyword(s):  
Sexual Differences ◽  
Cranial Morphology

Infection of American smelt in Lake Ontario and Lake Erie with the microsporidian parasite Glugea hertwigi (Weissenberg)

1972 ◽  
Vol 50 (9) ◽  
pp. 1183-1188 ◽  
Author(s):  
M. Chen ◽  
G. Power
Keyword(s):  
Digestive Tract ◽  
Lake Erie ◽  
Ovarian Tissue ◽  
Lake Ontario ◽  
Parasite Load ◽  
Sexual Differences ◽  
Striking Difference ◽  
Female Fish ◽  
Microsporidian Parasite ◽  
Male Fish

In samples taken monthly throughout the year the percentage of American smelt in Lake Ontario and Lake Erie containing cysts of Glugea hertwigi was 5.2% and 62.7% respectively. Sexual differences in incidence were observed, the significance of which was uncertain as results from the two lakes were contradictory.In male fish infection was almost entirely restricted to the digestive tract with few cysts in the liver, skin, and testes. In female fish the digestive tract and ovaries were similarly infected.Seasonal fluctuations in Glugea infection were obvious and seemed correlated with the gonadal cycle. In both sexes the highest parasite load corresponded with the onset of maturation.A striking difference in fecundity between the two smelt populations was attributed to the Glugea infection. In females parasite cysts replaced ovarian tissue, causing a reduction in the number of maturing eggs.

Sexual Difference, Animal Difference: Derrida and Difference “Worthy of Its Name”

Hypatia ◽  
2009 ◽  
Vol 24 (2) ◽  
pp. 54-76 ◽  
Author(s):  
Kelly Oliver
Keyword(s):  
Sexual Difference ◽  
Sexual Differences ◽  
Binary Opposition ◽  
Infinite Variety

I challenge the age-old binary opposition between human and animal, not as philosophers sometimes do by claiming that humans are also animals, or that animals are capable of suffering or intelligence, but rather by questioning the very category of “the animal” itself. This category groups a nearly infinite variety of living beings into one concept measured in terms of humans—animals are those creatures that are not human. In addition, I argue that the binary opposition between human and animal is intimately linked to the binary opposition between man and woman. Furthermore, I suggest that thinking through animal differences or differences among various living creatures opens up the possibility of thinking beyond the dualist notion of sexual difference and enables thinking toward a multiplicity of sexual differences.

Sexual differences in the foraging behaviour of Magellanic Penguins related to stage of breeding

2012 ◽  
Vol 112 (2) ◽  
pp. 90-96 ◽  
Author(s):  
Andrea Raya Rey ◽  
Klemens Pütz ◽  
Gabriela Scioscia ◽  
Benno Lüthi ◽  
Adrián Schiavini
Keyword(s):  
Foraging Behaviour ◽  
Sexual Differences ◽  
Magellanic Penguins
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