scholarly journals Basic description and some notes on the evolution of seven sympatric morphs of Dolly VardenSalvelinus malmafrom the Lake Kronotskoe Basin

2018 ◽  
Vol 8 (5) ◽  
pp. 2554-2567 ◽  
Author(s):  
Grigorii Markevich ◽  
Evgeny Esin ◽  
Liudmila Anisimova
Keyword(s):  
Sympatric Morphs

In search of the real Pseudomallada prasinus (Neuroptera, Chrysopidae)

Zootaxa ◽  
2019 ◽  
Vol 4571 (4) ◽  
pp. 510
Author(s):  
PETER DUELLI ◽  
MARTIN K. OBRIST
Keyword(s):  
Valid Species ◽  
Biological Traits ◽  
Large Species ◽  
Museum Collections ◽  
Type Specimens ◽  
The Real ◽  
Cross Breeding ◽  
Color Traits ◽  
Almost All ◽  
Sympatric Morphs

Three sympatric morphs of Pseudomallada prasinus (Burmeister, 1839) were hybridized in search of reproductively     separated species. In addition, 26 morphological and biological traits were recorded for living and preserved specimens of the three morphotypes.                                                                                                         Cross-breeding experiments showed that the prasinoid morph “marianus” is a different species from either the “greenhead” or “sulfurhead” morphs. All three are morphologically and biologically distinct. “Greenhead” and “sulfurhead” are small to medium sized and deposit eggs singly, without obligatory diapause in the second instar. In most specimens of these two smaller “prasinus” morphs there is a red or brown suture below the antennae, which can fade with age or preservation. P. “marianus” is a large species, depositing bundled eggs, with an obligatory diapause in about half of the L2. In none of the collected or reared P. “marianus” was a red or brown suture below the eyes observed. The forewing sizes of the type specimens of Chrysopa prasina Burmeister, 1839, C. coerulea Brauer, 1851, and C. marianus Navás, 1915 differ significantly from those of C. aspersa Wesmael, 1841 and other, later synonymized type specimens such as C. sachalinensis Matsumura, 1911, C. burri Navás, 1914, C. caucasica Navás, 1914, or C. vernalis Navás, 1926. This strongly suggests that the “marianus” morph is the real P. prasinus and the “greenhead” and “sulfurhead” morphs correspond to P. aspersus or one of the later synonymized species with smaller wing size.Pseudomallada marianus (Navás, 1905) is confirmed as a synonym of P. prasinus, depositing bundled eggs, whereas smaller prasinoid morphs, depositing single eggs, are not P. prasinus—and are morphologically distinct from P. abdominalis (Brauer, 1856). Pseudomallada aspersus (Wesmael, 1841) is a valid species, but at this point it is not possible to assign it to one of the prasinoid morphs because most of the live color traits are not discernible in old type specimens. A diagnostic description of the “real” P. prasinus can separate almost all P. prasinus specimens, even in museum collections, from P. aspersus (likely to be the “greenhead” morph) and the Mediterranean “sulfurhead”. 

scholarly journals MORPHOLOGICAL AND GENETIC ANALYSIS OF TWO SYMPATRIC MORPHS OF THE DOGWHELK NUCELLA LAPILLUS (GASTROPODA: MURICIDAE) FROM GALICIA (NORTHWESTERN SPAIN)

2004 ◽  
Vol 70 (2) ◽  
pp. 179-185 ◽  
Author(s):  
E. ROLÁN ◽  
J. GUERRA‐VARELA ◽  
I. COLSON ◽  
R. N. HUGHES ◽  
E. ROLÁN‐ALVAREZ
Keyword(s):  
Genetic Analysis ◽  
Nucella Lapillus ◽  
Northwestern Spain ◽  
Sympatric Morphs

Evidence for genetic differences in the offspring of two sympatric morphs of Arctic charr

2002 ◽  
Vol 60 (4) ◽  
pp. 933-950 ◽  
Author(s):  
A. Klemetsen ◽  
J. M. Elliott ◽  
R. Knudsen ◽  
P. Sorensen
Keyword(s):  
Arctic Charr ◽  
Genetic Differences ◽  
Sympatric Morphs

The Amphibolurus barbatus species group (Lacertilia : Agamidae)

1976 ◽  
Vol 24 (3) ◽  
pp. 423 ◽  
Author(s):  
JA Badham
Keyword(s):  
Phenotypic Expression ◽  
Species Group ◽  
The Other ◽  
Species Status ◽  
Apparent Absence ◽  
Skeletal Morphology ◽  
Apparent Lack ◽  
Morphological Differences ◽  
A Minor ◽  
Sympatric Morphs

The subspecies A. barbatus barbatus as currently recognized comprises two distinct marginally sympatric morphs. Differences in external and skeletal morphology and the apparent absence of hybrids in the narrow zone of overlap imply that each morph is genetically distinct and not a particular phenotypic expression of one genotype. The low density of one morph in the region of overlap, and hybrid inferiority as suggested by laboratory cross-mating, may each be partly responsible for the apparent lack of hybridization. On this basis each morph is given full species status, one being the typical form A. barbatus (Cuvier) while the other is referred to A. vitticeps Ahl. With the morphological differences between these two species as the criteria for species status, the other described subspecies of A. barbatus are examined and likewise elevated to species rank as follows: A. minor Sternfeld, A. minimus Loveridge and A. microlepidotus Glauert. Two additional new species A. mitchelli, sp. nov., and A. nullarbor, sp. nov., are described within the species-group.

Genetic differences between two sympatric morphs of Arctic charr confirmed by microsatellite DNA

2004 ◽  
Vol 65 (4) ◽  
pp. 1185-1191 ◽  
Author(s):  
J. I. Westgaard ◽  
A. Klemetsen ◽  
R. Knudsen
Keyword(s):  
Microsatellite Dna ◽  
Arctic Charr ◽  
Genetic Differences ◽  
Sympatric Morphs

scholarly journals Environmentally Modulated Repeat Evolution of Polymorphic Arctic Charr Life History Traits

2021 ◽  
Vol 9 ◽  
Author(s):  
Gabrielle Grenier ◽  
Aslak Smalås ◽  
Runar Kjær ◽  
Rune Knudsen
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Growth Parameters ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Local Environment ◽  
Life History Strategies ◽  
Age At Maturity ◽  
First Time ◽  
Sympatric Morphs

Sympatric Arctic charr, Salvelinus alpinus (L. 1758), morphs have flexible but repeated life history strategies tested across five Norwegian lakes. In several Scandinavian polymorphic Arctic charr populations differentiated by their diet and habitat use, a large littoral omnivorous (LO) morph commonly cooccurs with a smaller profundal spawning (PB/PZ) morph. A third, large piscivorous (PP) morph is also known to occur within a portion of Arctic charr populations in the profundal habitat along with the PB/PZ individuals. Life history traits, such as age at maturity, growth, and diet are known to differ among coexisting morphs. Notably, the PP morph was the longest morph with the oldest age at maturity while the PB/PZ morph showed the shortest lengths overall and youngest age with LO morph being intermediate in both traits. Growth parameters differed across all the morphs. When examining growth within morph groups, the LO morph was found to have different growth across all lakes, while similar reproductive investments and different energy acquisition patterns were seen within the PB/PZ and PP morphs. These results suggest repeat evolution in several life history strategies of reproductively isolated Arctic charr sympatric morphs, notably for the first time in the PP morph, while also highlighting the importance of the local environment in modulating life history traits.

Mitochondrial DNA differentiation between two sympatric morphs of striped jack near Japan

1995 ◽  
Vol 46 (6) ◽  
pp. 1003-1010 ◽  
Author(s):  
R. Masuda ◽  
T. Kamaishi ◽  
T. Kobayashi ◽  
K. Tsukamoto ◽  
K. Numachi
Keyword(s):  
Mitochondrial Dna ◽  
Sympatric Morphs

Genetic Causes and Consequences of Sympatric Morph Divergence in Salmonidae: A Search for Mechanisms

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
S.J. Salisbury ◽  
D.E. Ruzzante
Keyword(s):  
Economic Consequences ◽  
Annual Review ◽  
Publication Date ◽  
Incipient Speciation ◽  
Phenotypic Differences ◽  
Selective Pressures ◽  
Research Questions ◽  
Key Genes ◽  
Rare Opportunity ◽  
Sympatric Morphs

Repeatedly and recently evolved sympatric morphs exhibiting consistent phenotypic differences provide natural experimental replicates of speciation. Because such morphs are observed frequently in Salmonidae, this clade provides a rare opportunity to uncover the genomic mechanisms underpinning speciation. Such insight is also critical for conserving salmonid diversity, the loss of which could have significant ecological and economic consequences. Our review suggests that genetic differentiation among sympatric morphs is largely nonparallel apart from a few key genes that may be critical for consistently driving morph differentiation. We discuss alternative levels of parallelism likely underlying consistent morph differentiation and identify several factors that may temper this incipient speciation between sympatric morphs, including glacial history and contemporary selective pressures. Our synthesis demonstrates that salmonids are useful for studying speciation and poses additional research questions to be answered by future study of this family. Expected final online publication date for the Annual Review of Animal Biosciences, Volume 10 is February 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

Genetic differentiation between two sympatric morphs of the blind Iran cave barbIranocypris typhlops

2012 ◽  
Vol 81 (5) ◽  
pp. 1747-1753 ◽  
Author(s):  
I. Hashemzadeh Segherloo ◽  
L. Bernatchez ◽  
K. Golzarianpour ◽  
A. Abdoli ◽  
C. R. Primmer ◽  
...  
Keyword(s):  
Genetic Differentiation ◽  
Sympatric Morphs
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