scholarly journals Indirect Sexual Selection Drives Rapid Sperm Protein Evolution

2019 ◽  
Author(s):  
Damien B. Wilburn ◽  
Lisa M. Tuttle ◽  
Rachel E. Klevit ◽  
Willie J. Swanson
Keyword(s):  
Sexual Selection ◽  
Protein Evolution ◽  
Rapid Evolution ◽  
Similar Species ◽  
Arms Races ◽  
Sperm Protein ◽  
Intrinsically Disordered ◽  
Sperm Proteins ◽  
Fertilization Proteins ◽  
Coevolutionary Arms Race

AbstractSexual selection can explain rapid evolution of fertilization proteins, yet sperm proteins evolve rapidly even if they are not directly involved in fertilization. Here we demonstrate that FITZAP, an intrinsically disordered sperm protein in the marine mollusk abalone, exploits differences in the intracellular and oceanic ionic environments to package the fertilization protein lysin at extraordinary concentrations inside sperm by forming Fuzzy Interacting Transient Zwitterion (FITZ) complexes. FITZAP binds lysin at the same protein interface as its egg receptor VERL, and as sexual selection rapidly alters the lysin-VERL interface, FITZAP coevolves rapidly to maintain lysin binding. Consequently, FITZAP-lysin interactions exhibit a similar species-specificity as lysin-VERL interactions. Thus, tethered molecular arms races driven by sexual selection can generally explain rapid sperm protein evolution.One Sentence SummaryStructural study of sperm proteins reveals a novel protein packaging/dispersion system embedded in a coevolutionary arms race.

scholarly journals Indirect sexual selection drives rapid sperm protein evolution in abalone

eLife ◽  
2019 ◽  
Vol 8 ◽  
Author(s):  
Damien Beau Wilburn ◽  
Lisa M Tuttle ◽  
Rachel E Klevit ◽  
Willie J Swanson
Keyword(s):  
Sexual Selection ◽  
Protein Evolution ◽  
Rapid Evolution ◽  
Species Specificity ◽  
Similar Species ◽  
Arms Races ◽  
Marine Mollusk ◽  
Sperm Protein ◽  
Intrinsically Disordered ◽  
Fertilization Proteins

Sexual selection can explain the rapid evolution of fertilization proteins, yet sperm proteins evolve rapidly even if not directly involved in fertilization. In the marine mollusk abalone, sperm secrete enormous quantities of two rapidly evolving proteins, lysin and sp18, that are stored at nearly molar concentrations. We demonstrate that this extraordinary packaging is achieved by associating into Fuzzy Interacting Transient Zwitterion (FITZ) complexes upon binding the intrinsically disordered FITZ Anionic Partner (FITZAP). FITZ complexes form at intracellular ionic strengths and, upon exocytosis into seawater, lysin and sp18 are dispersed to drive fertilization. NMR analyses revealed that lysin uses a common molecular interface to bind both FITZAP and its egg receptor VERL. As sexual selection alters the lysin-VERL interface, FITZAP coevolves rapidly to maintain lysin binding. FITZAP-lysin interactions exhibit a similar species-specificity as lysin-VERL interactions. Thus, tethered molecular arms races driven by sexual selection can generally explain rapid sperm protein evolution.

scholarly journals Author response: Indirect sexual selection drives rapid sperm protein evolution in abalone

2019 ◽  
Author(s):  
Damien Beau Wilburn ◽  
Lisa M Tuttle ◽  
Rachel E Klevit ◽  
Willie J Swanson
Keyword(s):  
Sexual Selection ◽  
Protein Evolution ◽  
Author Response ◽  
Sperm Protein

Comparative immunoreactivity of mouse and hamster sperm proteins recognized by an anti-P26h hamster sperm protein

1995 ◽  
Vol 41 (2) ◽  
pp. 249-256 ◽  
Author(s):  
Sylvie Bégin ◽  
Bruno Bérubé ◽  
Franck Boué ◽  
Robert Sullivan
Keyword(s):  
Sperm Protein ◽  
Sperm Proteins

scholarly journals Sperm protein markers for Holstein bull fertility at National Artificial Insemination Centers in Indonesia

2020 ◽  
Vol 13 (5) ◽  
pp. 947-955
Author(s):  
Zulfi Nur Amrina Rosyada ◽  
Mokhamad Fakhrul Ulum ◽  
Ligaya I. T. A. Tumbelaka ◽  
Bambang Purwantara
Keyword(s):  
Artificial Insemination ◽  
Sperm Quality ◽  
High Fertility ◽  
Fertility Level ◽  
Sperm Protein ◽  
Sperm Proteins ◽  
Frozen Semen ◽  
Sds Page ◽  
Microscopic Evaluation ◽  
Holstein Bulls

Background and Aim: Holstein cows and heifers are widely bred in Indonesia by artificial insemination (AI) to increase population and milk production. Sperm fertility is modulated by genetic factors, but the analysis of sperm quality is still based on macro- and microscopic characteristics. This study aimed to analyze both sperm quality and proteins of Holstein bulls at different fertility levels. Materials and Methods: The frozen semen samples were collected from the Indonesia National AI Center. They were classified based on the reproductive efficiency data and were grouped into high fertile (HF) and low fertile (LF). Sperm qualities were evaluated by microscopic evaluation. The Holstein sperm proteins were extracted using phenylmethanesulfonyl fluoride as a protease inhibitor and the benzidine detergent extraction method. Discontinuous sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) was conducted to analyze the molecular weights (MWs) of the sperm proteins. The data obtained were analyzed by a t-test using the one-factor bull fertility level, and Spearman's correlation analysis was used to identify the correlation between the sperm microscopic evaluation parameters and protein bands. Results: The sperm motility post-freeze thawing was not significantly different between the HF and LF (p>0.05). The HF level had a higher percentage of viability, intact plasma membrane integrity, and intact acrosomes than the LF (p<0.05). Five protein bands were found in the SDS-PAGE of sperm proteins of Holstein bulls with different concentrations. Sperm proteins with MWs of 17.51 kDa, 14.87 kDa, 33.71 kDa, and 41.97 kDa were abundant in the Holstein bulls with an HF level, while 55 kDa proteins were abundant in the LF level of Holstein bulls. The sperm of Holstein bulls in the HF level contained proteins of about 33.71 kDa that were not detected in the LF. Conclusion: The sperm protein with a molecular weight of 33.71 kDa was predicted to be a specific protein biomarker that influences bull fertility. Sperm fertilization abilities were also determined by the sperm proteins, the morphology of sperm acrosomes, and the quality of plasma membranes. This method can be used to select bulls with high fertility to increase the population of Holstein bulls.

Male terminalia morphology of sixteen species of the Drosophila saltans group Sturtevant (Diptera, Drosophilidae)

Zootaxa ◽  
2021 ◽  
Vol 5061 (3) ◽  
pp. 523-544
Author(s):  
BRUNA EMILIA ROMAN ◽  
LILIAN MADI-RAVAZZI
Keyword(s):  
Sexual Selection ◽  
Sibling Species ◽  
Potential Role ◽  
Rapid Evolution ◽  
Variable Structure ◽  
Diagnostic Feature ◽  
Internal Fertilization ◽  
Saltans Group

Male terminalia in insects with internal fertilization evolve more rapidly than other structures. The aedeagus is the most variable structure, making it a valuable diagnostic feature to distinguish species. The saltans group Sturtevant of Drosophila Fallén contains sibling species, that can be distinguished by their aedeagi. Here, we revised and illustrated the morphology of the male terminalia of the following species: Drosophila prosaltans Duda, 1927; D. saltans Sturtevant, 1916; D. lusaltans Magalhães, 1962; D. austrosaltans Spassky, 1957; D. septentriosaltans Magalhães, 1962; D. nigrosaltans Magalhães, 1962; D. pseudosaltans Magalhães, 1956; D. sturtevanti Duda, 1927; D. lehrmanae Madi-Ravazzi et al., 2021; D. dacunhai Mourão & Bicudo, 1967; D. milleri Magalhães, 1962; D. parasaltans Magalhães, 1956; D. emarginata Sturtevant, 1942; D. neoelliptica Pavan & Magalhães in Pavan, 1950; D. neosaltans Pavan & Magalhães in Pavan, 1950 and D. neocordata Magalhães, 1956. We found that phallic structures (e.g., the aedeagus) evolve more rapidly than periphallic structures (e.g., epandrium), being completely different among the subgroups and within them. This rapid evolution may be due to the action of sexual selection or to the potential role of those structures in speciation.  

Rapid evolution by sexual selection in a wild, invasive mammal

Evolution ◽  
2020 ◽  
Vol 74 (4) ◽  
pp. 740-748
Author(s):  
M. Aaron Owen ◽  
David C. Lahti
Keyword(s):  
Sexual Selection ◽  
Rapid Evolution

scholarly journals Brood parasitism selects for no defence in a cuckoo host

2011 ◽  
Vol 278 (1719) ◽  
pp. 2777-2783 ◽  
Author(s):  
Oliver Krüger
Keyword(s):  
Brood Parasitism ◽  
Adaptive Behaviour ◽  
Arms Races ◽  
Defence Behaviour ◽  
Egg Mimicry ◽  
Evolutionary Lag ◽  
Thick Shells ◽  
Defence Strategies ◽  
Coevolutionary Arms Race ◽  
Parasite Avoidance

In coevolutionary arms races, like between cuckoos and their hosts, it is easy to understand why the host is under selection favouring anti-parasitism behaviour, such as egg rejection, which can lead to parasites evolving remarkable adaptations to ‘trick’ their host, such as mimetic eggs. But what about cases where the cuckoo egg is not mimetic and where the host does not act against it? Classically, such apparently non-adaptive behaviour is put down to evolutionary lag: given enough time, egg mimicry and parasite avoidance strategies will evolve. An alternative is that absence of egg mimicry and of anti-parasite behaviour is stable. Such stability is at first sight highly paradoxical. I show, using both field and experimental data to parametrize a simulation model, that the absence of defence behaviour by Cape bulbuls ( Pycnonotus capensis ) against parasitic eggs of the Jacobin cuckoo ( Clamator jacobinus ) is optimal behaviour. The cuckoo has evolved massive eggs (double the size of bulbul eggs) with thick shells, making it very hard or impossible for the host to eject the cuckoo egg. The host could still avoid brood parasitism by nest desertion. However, higher predation and parasitism risks later in the season makes desertion more costly than accepting the cuckoo egg, a strategy aided by the fact that many cuckoo eggs are incorrectly timed, so do not hatch in time and hence do not reduce host fitness to zero. Selection will therefore prevent the continuation of any coevolutionary arms race. Non-mimetic eggs and absence of defence strategies against cuckoo eggs will be the stable, if at first sight paradoxical, result.

scholarly journals Rapid Evolution of Virus Sequences in Intrinsically Disordered Protein Regions

2014 ◽  
Vol 10 (12) ◽  
pp. e1004529 ◽  
Author(s):  
Leonid Gitlin ◽  
Tzachi Hagai ◽  
Anthony LaBarbera ◽  
Mark Solovey ◽  
Raul Andino
Keyword(s):  
Rapid Evolution ◽  
Intrinsically Disordered Protein ◽  
Intrinsically Disordered ◽  
Disordered Protein
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