Article
Multidisciplinary Sciences
Clarissa Cerepaka, Ingo Schlupp
Summary: This study investigates the reproductive behavior of the Amazon Molly and explores which species can trigger its asexual reproduction through natural mating. It also examines how sympatry affects the reproductive success of the Amazon Molly. The results show that the relative reproductive output is higher when mating with sympatric Atlantic Molly males compared to allopatric P. mexicana males.
Article
Fisheries
Shala Hankison, Eric J. Gangloff, Breanna Fry, Alena Arnold, A. J. Lashway, Jenell M. Betts, Sandra D. Otap, Katherine Walter, Makenna Y. Juergens, Alax Crawford
Summary: The study on sailfin molly found that females reliant on stored sperm had fewer offspring, but offspring size and short-term growth rate remained the same. Females may use stored sperm in situations where they cannot access mating opportunities, have mated with a preferred male before, or to maximize egg fertilization.
JOURNAL OF FISH BIOLOGY
(2022)
Article
Multidisciplinary Sciences
Aya Sato, Ryu-ichi Aihara, Kenji Karino
Summary: The study indicates that under the trade-up hypothesis, females adjust the timing of fertilization based on the attractiveness of the male, leading to an increased opportunity for cryptic female choice and trading up.
Article
Psychology, Biological
Gregory Bulte, Brooke Huneault, Gabriel Blouin-Demers
Summary: Research on wild northern map turtles reveals that males use public information to select mates and reduce sperm competition. They tend to avoid females affiliated with rival males, show eavesdropping behavior, and exhibit different interactions based on the presence or absence of rivals. Male-male interactions also play a role in reducing sperm competition, although the exact nature of these interactions remains unclear.
Article
Biology
Thomas A. Keaney, Theresa M. Jones, Luke Holman
Summary: The SD allele in Drosophila melanogaster distorts Mendelian inheritance in heterozygous males by causing developmental failure of non-SD spermatids, leading to greater than 90% of sperm carrying SD. Sexual selection may limit the natural frequencies of SD when sperm competitive ability and female remating rate equal the values observed for one SD variant, SD-5, but is unable to explain the rarity of SD when parameterized with the values found for two other SD variants.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Biology
Graham Birch, Magali Meniri, Michael A. Cant, Jonathan D. Blount
Summary: Reproduction is expected to have oxidative costs, but many species' breeders have lower levels of oxidative damage compared to non-breeders. This paradox may be explained by the intergenerational costs of reproduction - oxidative shielding hypothesis, which suggests that a reduction in oxidative damage during reproduction may be a pre-emptive strategy to protect the next generation from intergenerational oxidative damage (IOD). However, male-mediated IOD is still largely unexplored. This study presents a framework to assess intergenerational costs of reproduction and oxidative shielding in males, discussing the potential impact on offspring fitness.
BIOLOGICAL REVIEWS
(2023)
Article
Behavioral Sciences
Alexa G. Guerrera, M. J. Daniel, K. A. Hughes
Summary: Investigating the relationship between intrasexual competition and intersexual mate choice is crucial for understanding sexually-dimorphic traits. In this study on Trinidadian guppies, male-male competition favored larger males with more black coloration, while female mate choice favored males with more orange coloration. These conflicting selection pressures may explain the complexity of male guppy color patterns.
BEHAVIORAL ECOLOGY
(2022)
Article
Ecology
Olivia E. Anastasio, Chelsea S. Sinclair, Alison Pischedda
Summary: Cryptic male mate choice refers to the differential allocation of resources by males to females during or after copulation. In the fruit fly Drosophila melanogaster, males mate longer and allocate more resources to larger females compared to smaller females. However, it is unclear if this increased investment in larger females has any impact on the males' subsequent matings.
Article
Biochemistry & Molecular Biology
Anastasia H. Dalziell, Alex C. Maisey, Robert D. Magrath, Justin A. Welbergen
Summary: Male superb lyrebirds create elaborate acoustic illusions to deceive avian receivers and prevent premature termination of crucial sexual interactions by females, thus triggering an intersexual co-evolutionary arms race between male mimetic accuracy and female discrimination. This suggests that the development of complex avian vocalizations known as 'song' may be driven by sexual conflict rather than female preference for male extravagance.
Article
Biodiversity Conservation
Rudiger Riesch, Amber M. Makowicz, Brandon Joachim, Francisco J. Garcia-De Leon, Ingo Schlupp
Summary: In the face of human-induced environmental change, basic biological data are essential for devising proper conservation strategies for threatened species. This study provides life-history data for the critically endangered Tamesi molly, revealing similarities and differences in male size and offspring size among populations. Further research into the basic biology of this species, including competitive ability, is recommended.
REVISTA MEXICANA DE BIODIVERSIDAD
(2021)
Article
Ecology
Suzanne H. H. Alonzo
Summary: Sexual selection shapes the details and breadth of nature, but there is still much unexplained variation. Nonmodel organisms challenge our assumptions and push our understanding of sexual selection forward. Integrating empirical surprises is important for generating new questions and learning more about sexual selection.
AMERICAN NATURALIST
(2023)
Article
Behavioral Sciences
Robin M. Hare, Helena Larsdotter-Mellstro, Leigh W. Simmons
Summary: Insect cuticular hydrocarbons serve as desiccation resistance and chemical signals for mate choice.
Article
Psychology, Clinical
Tara DeLecce, Todd K. Shackelford, Virgil Zeigler-Hill, Bernhard Fink, Mohaned G. Abed
Summary: The study found no compensatory relationship between mate retention behavior and investment in ejaculate quality in human males, providing limited support for this hypothesis. Further research is needed to address questions about the nature of anti-cuckoldry tactic deployment in humans, especially concerning investment in ejaculate quality.
ARCHIVES OF SEXUAL BEHAVIOR
(2021)
Article
Multidisciplinary Sciences
Romulo Carleial, Tommaso Pizzari, David S. Richardson, Grant C. McDonald
Summary: In principle, temporal fluctuations in sexual selection potential can be estimated by changes in reproductive success variance. However, little is known about how opportunity measures vary over time and the role of stochasticity. This study uses mating data to investigate temporal variation in sexual selection opportunity and finds that it changes rapidly, is influenced by random matings, and may be slowed by intrasexual competition. The study emphasizes the importance of simulations in understanding sexual selection and avoiding misinterpretation.
NATURE COMMUNICATIONS
(2023)
Article
Fisheries
Kimberly T. Mitchell, Shawn R. Garner, Aimee Lee Houde, Chris C. Wilson, Trevor E. Pitcher, Bryan D. Neff
Summary: The study found that exotic prey fishes with high thiaminase levels can cause thiamine deficiency and reduced fitness in salmonids. Differences in sensitivity to low thiamine availability among Atlantic salmon populations may affect their performance, but the response to low-thiamine diet did not differ significantly among the tested populations.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2021)
Article
Neurosciences
Yevheniia Korniienko, Ralph Tiedemann, Marianne Vater, Frank Kirschbaum
Summary: The electric organ of mormyrid weakly electric fish undergoes changes in both the electric organ discharge and the morphology as the fish mature. The appearance of papillae on the electrocytes may affect the duration of the electric organ discharge. However, there is no linear correlation between the duration of the EOD and the size of the papillae. Ultrastructural changes in the myofilaments may play a supporting function in the oldest specimen. Factors like gene expression levels may be more important in determining the duration of the EOD.
JOURNAL OF COMPARATIVE NEUROLOGY
(2021)
Article
Evolutionary Biology
Binia De Cahsan, Michael V. Westbury, Sofia Paraskevopoulou, Hauke Drews, Moritz Ott, Guenter Gollmann, Ralph Tiedemann
Summary: Range margin populations are vulnerable to rapid environmental change, and gene flow may be crucial for their survival. Translocations are proposed to increase genetic diversity but carry the risk of losing locally adapted alleles. A study on European fire-bellied toads in Germany found signs of introgression from southern populations, with introgressed alleles possibly providing adaptive advantages. This research highlights the complex genetic consequences of translocations on range margin populations.
EVOLUTIONARY APPLICATIONS
(2021)
Article
Ecology
Daniel Romero-Mujalli, Markus Rochow, Sandra Kahl, Sofia Paraskevopoulou, Remco Folkertsma, Florian Jeltsch, Ralph Tiedemann
Summary: The study investigates the relative importance of adaptive and nonadaptive plasticity for populations of sexual species with different life histories facing directional stochastic climate change. It suggests that adaptive plasticity promotes population persistence under environmental noise, particularly for life histories with low fecundity.
ECOLOGY AND EVOLUTION
(2021)
Article
Ecology
Binia De Cahsan, Katrin Kiemel, Michael V. Westbury, Maike Lauritsen, Marijke Autenrieth, Gunter Gollmann, Silke Schweiger, Marika Stenberg, Per Nystrom, Hauke Drews, Ralph Tiedemann
Summary: The study shows that the northern range margin populations of the European fire-bellied toad have rapidly declined due to extensive agricultural land use, leading to habitat disruption. By comparing the body conditions and genetic consequences in introgressed and nonintrogressed populations, regional differences in body condition were detected in Swedish populations, while no differences were observed in German populations. The research highlights the potential benefits of translocations of more distantly related conspecifics in increasing adaptive genetic variability and fitness of genetically depauperate range margin populations.
ECOLOGY AND EVOLUTION
(2021)
Article
Agriculture, Multidisciplinary
Sissi Lozada-Gobilard, Carlos Miguel Landivar Albis, Karolina Beata Rupik, Marlene Paetzig, Sebastian Hausmann, Ralph Tiedemann, Jasmin Joshi
Summary: The study found that large and less isolated kettle holes can enhance bee diversity in agricultural landscapes, and the higher quality of vegetation within the kettle holes positively influences bee diversity.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2021)
Correction
Behavioral Sciences
Yevheniia Korniienko, Linh Nguyen, Stephanie Baumgartner, Marianne Vater, Ralph Tiedemann, Frank Kirschbaum
JOURNAL OF COMPARATIVE PHYSIOLOGY A-NEUROETHOLOGY SENSORY NEURAL AND BEHAVIORAL PHYSIOLOGY
(2021)
Article
Behavioral Sciences
Yevheniia Korniienko, Kingsley C. Nzimora, Marianne Vater, Ralph Tiedemann, Frank Kirschbaum
Summary: This study demonstrates that intergenus hybrids in weakly electric mormyrid fish can be fertile, and provides a detailed description of the morphological and electric organ discharge development of these hybrids.
JOURNAL OF COMPARATIVE PHYSIOLOGY A-NEUROETHOLOGY SENSORY NEURAL AND BEHAVIORAL PHYSIOLOGY
(2022)
Correction
Behavioral Sciences
Linh Nguyen, Victor Mamonekene, Marianne Vater, Peter Bartsch, Ralph Tiedemann, Frank Kirschbaum
JOURNAL OF COMPARATIVE PHYSIOLOGY A-NEUROETHOLOGY SENSORY NEURAL AND BEHAVIORAL PHYSIOLOGY
(2022)
Article
Fisheries
Jan Haege, Matthew J. Hansen, Korbinian Pacher, Felicie Dhellemmes, Paolo Domenici, John F. Steffensen, Michael Breuker, Stefan Krause, Thomas B. Hildebrandt, Guido Fritsch, Pascal Bach, Philippe S. Sabarros, Paul Zaslansky, Kristin Mahlow, Maria Schauer, Johannes Mueller, Jens Krause
Summary: Recent comparative studies have found differences in the shape and function of the rostra among billfish species. This study reports the discovery of a new structure called lacuna rostralis on the rostra of sailfish, which is absent in swordfish, striped marlin, and blue marlin. The lacunae rostralis are small cavities that contain teeth and are proposed to have functions related to feeding.
JOURNAL OF FISH BIOLOGY
(2022)
Article
Ecology
Jonas Stiegler, Katrin Kiemel, Jana Eccard, Christina Fischer, Robert Hering, Sylvia Ortmann, Lea Strigl, Ralph Tiedemann, Wiebke Ullmann, Niels Blaum
Summary: The study found that hares play a crucial role in endozoochorous seed dispersal, especially in agricultural landscapes. Seed morphological traits are related to germination success, and hares have a long enough retention time to act as effective mobile linkers between different habitats.
ECOLOGY AND EVOLUTION
(2021)
Article
Biology
Montrai Spikes, Rodet Rodriguez-Silva, Kerri-Ann Bennett, Stefan Braeger, James Josaphat, Patricia Torres-Pineda, Anja Ernst, Katja Havenstein, Ingo Schlupp, Ralph Tiedemann
Summary: The study examined the evolutionary history of Limia species in Lake Miragoane, finding that the species form a monophyletic group and confirming recent local radiation. Speciation within the lake is likely very recent, resulting in incomplete lineage sorting in the mtDNA.
BMC RESEARCH NOTES
(2021)
Article
Genetics & Heredity
K. Kiemel, B. De Cahsan, S. Paraskevopoulou, G. Weithoff, R. Tiedemann
Summary: The Brachionus calyciflorus species complex has been recently subdivided, but there is still a lack of genetic resources to understand the phylogenetic relationships within it. This study provides complete mitochondrial genomes and coding sequences, suggesting that B. calyciflorus sensu stricto is closely related to published genomes of B. calyciflorus and is the putative sister species to B. fernandoi.
MITOCHONDRIAL DNA PART B-RESOURCES
(2022)
Article
Biochemistry & Molecular Biology
Katrin Kiemel, Guntram Weithoff, Ralph Tiedemann
Summary: This study used a DNA metabarcoding approach to investigate the spatial and temporal connectivity of zooplankton communities and the environmental factors influencing their assembly. The results showed that community composition was primarily determined by pH, kettle hole size, surrounding field crops, and permanency. Environmental filtering based on specific conditions in individual kettle holes seemed to be the dominant process in community assembly in the studied zooplankton metacommunity.
Article
Anatomy & Morphology
Kirsten Ferner, Kristin Mahlow
Summary: This study reconstructs the bronchial tree of the marsupial Gray short-tailed opossum using X-ray computed tomography. It reveals that the lung of M. domestica has a primitive appearance at birth, but steadily increases in volume and undergoes development, differentiation, and expansion of the bronchial tree during the postnatal period. By day 35, a mature bronchial tree is present. Lung maturation and branching morphogenesis seem to be highly conservative within mammalian evolution.
JOURNAL OF ANATOMY
(2023)
Article
Evolutionary Biology
Sissi Lozada-Gobilard, Christian Schwarzer, Rodney Dyer, Ralph Tiedemann, Jasmin Joshi
Summary: The study found that genetic diversity in plants is influenced by their reproductive strategies and dispersal mechanisms, with clonally reproducing plants showing lower genetic diversity compared to non-clonal reproducing plants. Genetic divergence and connectivity also differ between plants with different dispersal strategies, affecting gene flow between populations.
JOURNAL OF HEREDITY
(2021)