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Territory Availability at Different Spatial Scales does not Affect Fighting Investment in Males of the Lycaenid Butterfly Strymon mulucha 下载免费PDF全文
Cibele P. S. Ferreira Luana P. Cerqueira Alexandre Uezu Eddy J. F. Oliveira Paulo E. C. Peixoto 《Ethology : formerly Zeitschrift fur Tierpsychologie》2016,122(10):798-806
In territorial species, rivals investment in fights over territories may increase when the availability of suitable areas for defense is low. This should occur because low territory availability may increase the costs to maintain and acquire territories. Although such process occurs in small spatial scales (local scale), territory availability in larger scales (regional scale) may also affect fighting investment, as losers should incur additional dispersing costs to find new territories. In this study, we used males of the hilltopping butterfly Strymon mulucha to evaluate the hypothesis that males should invest more in territorial fights when the costs to find new territories are higher (both at local and at regional scale). We timed male–male contests for territories located in 12 hilltops and measured male density per territory in each hilltop (local scale). We also quantified the distance between hilltops containing suitable areas for territories (regional scale). Male–male contests lasted 21 s on average, and copulations did not occur during the observations. The duration of contests was unrelated to the male density per territory or to the distance among hilltops, indicating that the investment in fights was unaffected by the availability of territorial sites, independent of the spatial scale. As male–male contests in S. mulucha are longer than the mean contest duration in other butterfly species and mating is extremely rare, we suggest that the value of each territory may be high enough to favor males that always invest as much as possible in contests. 相似文献
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Chrystelle Aillaud Christophe Bosc Yasmina Saoudi Eric Denarier Leticia Peris Laila Sago Nicolas Taulet Adeline Cieren Olivia Tort Maria M. Magiera Carsten Janke Virginie Redeker Annie Andrieux Marie-Jo Moutin 《Molecular biology of the cell》2016,27(4):640-653
Cellular α-tubulin can bear various carboxy-terminal sequences: full-length tubulin arising from gene neosynthesis is tyrosinated, and two truncated variants, corresponding to detyrosinated and Δ2 α‑tubulin, result from the sequential cleavage of one or two C-terminal residues, respectively. Here, by using a novel antibody named 3EG that is highly specific to the –EEEG C-terminal sequence, we demonstrate the occurrence in neuronal tissues of a new αΔ3‑tubulin variant corresponding to α1A/B‑tubulin deleted of its last three residues (EEY). αΔ3‑tubulin has a specific distribution pattern: its quantity in the brain is similar to that of αΔ2-tubulin around birth but is much lower in adult tissue. This truncated α1A/B-tubulin variant can be generated from αΔ2-tubulin by the deglutamylases CCP1, CCP4, CCP5, and CCP6 but not by CCP2 and CCP3. Moreover, using 3EG antibody, we identify a C‑terminally truncated β-tubulin form with the same –EEEG C-terminal sequence. Using mass spectrometry, we demonstrate that β2A/B-tubulin is modified by truncation of the four C-terminal residues (EDEA). We show that this newly identified βΔ4-tubulin is ubiquitously present in cells and tissues and that its level is constant throughout the cell cycle. These new C-terminally truncated α- and β-tubulin variants, both ending with –EEEG sequence, are expected to regulate microtubule physiology. Of interest, the αΔ3-tubulin seems to be related to dynamic microtubules, resembling tyrosinated-tubulin rather than the other truncated variants, and may have critical function(s) in neuronal development. 相似文献
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João Paulo Oliveira Corrêa Camilo Elber Vital Marcos Vinícius Marques Pinheiro Diego Silva Batista Cleber Witt Saldanha Ana Cláudia Ferreira da Cruz Marcela Morato Notini Débora Márcia Silva Freitas Fábio Murilo DaMatta Wagner Campos Otoni 《In vitro cellular & developmental biology. Plant》2016,52(1):45-55
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Nogueira-Ferreira Rita Ferreira Rita Padrão Ana Isabel Oliveira Paula Santos Manuel Kavazis Andreas N. Vitorino Rui Moreira-Gonçalves Daniel 《Journal of physiology and biochemistry》2019,75(4):561-572
Journal of Physiology and Biochemistry - Aerobic exercise training induces a unique cardioprotective phenotype, but it is becoming clear that it does not promote the same structural, functional,... 相似文献
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Llis A. Carlos‐Júnior Matthew Spencer Danilo Mesquita Neves Timothy Peter Moulton Dbora de Oliveira Pires Clovis Barreira e Castro Carlos Renato Rezende Ventura Carlos Eduardo Leite Ferreira Cristiana Silveira Serejo Simone Oigman‐Pszczol Fernanda Araújo Casares Marcelo Checoli Mantelatto Joel Christopher Creed 《Diversity & distributions》2019,25(5):743-757
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Mosina Ntsoaki Leticia Schubert Wolf-Dieter Cowan Don A. 《Extremophiles : life under extreme conditions》2019,23(6):681-686
Extremophiles - Glycoside hydrolases, particularly cellulases, xylanases and mannanases, are essential for the depolymerisation of lignocellulosic substrates in various industrial bio-processes. In... 相似文献