Results 51 to 60 of about 7,250 (186)

Beyond Sexual Selection: Natural Selection Related Camouflage and Thermoregulation Shape Sexual Color Dimorphism in Diploderma Lizards

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

All quiet on the western front? The evolutionary history of monogeneans (Dactylogyridae: Cichlidogyrus, Onchobdella) infecting a West and Central African tribe of cichlid fishes (Chromidotilapiini)

Parasite, 2023
Owing to the largely unexplored diversity of metazoan parasites, their speciation mechanisms and the circumstances under which such speciation occurs – in allopatry or sympatry – remain vastly understudied.
Moons Tanisha, Kmentová Nikol, Pariselle Antoine, Artois Tom, Bert Wim, Vanhove Maarten P.M., Cruz-Laufer Armando J.   +6 more
doaj   +1 more source

Budding speciation, mitochondrial capture and introgression between surface and cave lineages in the Asellus aquaticus species complex

Cladistics, EarlyView.
Abstract Replicated pairs of ancestral and evolutionarily derived populations provide opportunities to test hypotheses about the deterministic laws of evolution. The Asellus aquaticus species complex is an invertebrate model system with several independent surface‐to‐cave transitions and a complicated and unresolved evolutionary history.
Peter Trontelj, Valerija Zakšek, Anja Palandačić, Hans Recknagel   +3 more
wiley   +1 more source

1177. Streptocarpus aylae T.J.Edwards

Curtis's Botanical Magazine, EarlyView.
Summary Streptocarpus aylae T.J.Edwards, a spectacular, rosette forming herbaceous perennial from cliffs of the Msikaba River in Pondoland, Eastern Cape Province, South Africa is illustrated and discussed. The species is known from only two sites and is highly localised, growing in humus rich cracks and crevices on sandstone cliffs.
Paul Rees, Adam Harrower, Ernst J. Van Jaarsveld, Thomas E.M. Pickering, Carel J. Fourie, Dirk U. Bellstedt, Christabel King   +6 more
wiley   +1 more source

Sympatric Speciation of Tibetan Loaches (Triplophysa) Driven by Dietary Niche Specialization

Ecology and Evolution
The Qinghai‐Tibeta Plateau is a hotspot for endemic fish biodiversity. Multiple isolated glacial lakes provide an ideal scenario for verifying the speciation mode of highland ichthyofauna.
Sijia Liu, Ruoyu Zhang, Zhengli Wang, Kemao Li, Wulong Ma, Jinliang Wei, Mingzhu Wang, Wen‐Jun Ma, Shengxue Chen, Kai Zhao, Guogang Li, Fei Tian   +11 more
doaj   +1 more source

Transcriptomes Divergence of Ricotia lunaria Between the Two Micro-Climatic Divergent Slopes at “Evolution Canyon” I, Israel

Frontiers in Genetics, 2018
As one of the hotspot regions for sympatric speciation studies, Evolution Canyon (EC) became an ideal place for its high level of microclimatic divergence interslopes. In this study, to highlight the genetic mechanisms of sympatric speciation, phenotypic
Chaoju Qian, Xia Yan, Xia Yan, Hengxia Yin, Xingke Fan, Xingke Fan, Xiaoyue Yin, Xiaoyue Yin, Peipei Sun, Peipei Sun, Zhijun Li, Eviatar Nevo, Xiao-Fei Ma   +12 more
doaj   +1 more source

Divergence in sex steroid hormone signaling between sympatric species of Japanese threespine stickleback. [PDF]

PLoS ONE, 2011
Sex steroids mediate the expression of sexually dimorphic or sex-specific traits that are important both for mate choice within species and for behavioral isolation between species.
Jun Kitano, Yui Kawagishi, Seiichi Mori, Catherine L Peichel, Takashi Makino, Masakado Kawata, Makoto Kusakabe   +6 more
doaj   +1 more source

Contrasting population genetic structures of congeneric coastal flounders associated with different early life histories

Journal of Fish Biology, EarlyView.
Abstract Marine fish species are likely to exhibit little genetic differentiation among populations due to their high dispersal potential during early life stages and migratory nature. However, recent studies have increasingly reported intraspecific genetic differentiation resulting from species‐specific ecological traits, environmental factors, and ...
Yuki Yamamoto, Hiroyuki Togashi, Yutaka Kurita, Satoshi Katayama, Yoshiaki Akaba, Mitsuhiro Ishii, Tatsuya Isshiki, Minoru Ikeda   +7 more
wiley   +1 more source

Sympatric speciation as a consequence of male pregnancy in seahorses [PDF]

Proceedings of the National Academy of Sciences, 2003
The phenomenon of male pregnancy in the family Syngnathidae (seahorses, pipefishes, and sea dragons) undeniably has sculpted the course of behavioral evolution in these fishes. Here we explore another potentially important but previously unrecognized consequence of male pregnancy: a predisposition for sympatric speciation. We present microsatellite
Jones, Adam G, Moore, Glenn I, Kvarnemo, Charlotta, Walker, DeEtte, Avise, John C   +4 more
openaire   +4 more sources

Assessing local adaptation and divergence at early life stages within Eastern Baltic cod (Gadus morhua)

Journal of Fish Biology, EarlyView.
Abstract Many commercially exploited fish stocks have declined over the last few decades. It is therefore essential to identify natural populations and understand local adaptation for sustainable management. Salinity is a key environmental factor shaping local adaptation, and adaptive trait divergence often occurs at the egg and larval stages.
Maddi Garate‐Olaizola, Johanna Fröjd, Vanda Larsson Åberg, Alma Hodzic‐Vázquez, Yvette Heimbrand, Anders Nissling, Jane W. Behrens, Maria Cortázar‐Chinarro, Ulf Bergström, Anssi Laurila   +9 more
wiley   +1 more source