Geometric morphometric analysis reveals that the shells of male and female siphon whelks Penion chathamensis are the same size and shape

2017 ◽  
Vol 37 (3) ◽  
pp. 194-201 ◽  
Author(s):  
Felix Vaux ◽  
James S. Crampton ◽  
Bruce A. Marshall ◽  
Steven A. Trewick ◽  
Mary Morgan-Richards
Keyword(s):  
Morphometric Analysis ◽  
Geometric Morphometric ◽  
Male And Female ◽  
Size And Shape ◽  
Geometric Morphometric Analysis

scholarly journals A revision of the genus Olivancillaria (Mollusca: Olividae) from the southwestern Atlantic

Zootaxa ◽  
2011 ◽  
Vol 2889 (1) ◽  
pp. 1 ◽  
Author(s):  
VALERIA TESO ◽  
GUIDO PASTORINO
Keyword(s):  
Geographic Distribution ◽  
Morphometric Analysis ◽  
Field Observations ◽  
Southwestern Atlantic ◽  
Sem Images ◽  
Geometric Morphometric ◽  
Size And Shape ◽  
Egg Capsules ◽  
Living Species ◽  
Geometric Morphometric Analysis

The genus Olivancillaria is revised and restricted to eight living species: O. deshayesiana, O. carcellesi, O. urceus, O. contortuplicata, O. orbignyi, O. teaguei, O. auricularia and O. vesica. The last two species were previously considered as subspecies. The name O. uretai is a junior synonym of O. orbignyi. The genus Olivancillaria is endemic to the southwestern Atlantic, ranging from Bahia state, Brazil (~12°S) to Chubut province (42°37’S), Argentina, intertidal to 70 m depth. It is a clear representative of the Argentine Malacological province. Redescriptions and re-illustration of types were done for each species. Shell ultrastructure, radulae, penes, siphon papillae and egg capsules are described and illustrated by SEM images. A geometric morphometric analysis was carried out to confirm shell variation on size and shape among species. The geographic distribution of each species is provided based on field observations as well as on museum records.

Geometric morphometric analysis of the effect of temperature on wing size and shape in Aedes albopictus

2019 ◽  
Vol 33 (4) ◽  
pp. 476-484 ◽  
Author(s):  
T. Phanitchat ◽  
C. Apiwathnasorn ◽  
S. Sungvornyothin ◽  
Y. Samung ◽  
S. Dujardin ◽  
...  
Keyword(s):  
Aedes Albopictus ◽  
Morphometric Analysis ◽  
Effect Of Temperature ◽  
Wing Size ◽  
Geometric Morphometric ◽  
Size And Shape ◽  
Geometric Morphometric Analysis

scholarly journals Subtle variation in size and shape of the whole forewing and the red band among co-mimics revealed by geometric morphometric analysis inHeliconiusbutterflies

2018 ◽  
Vol 8 (6) ◽  
pp. 3280-3295 ◽  
Author(s):  
Dirleane O. Rossato ◽  
Danessa Boligon ◽  
Rodrigo Fornel ◽  
Marcus R. Kronforst ◽  
Gislene L. Gonçalves ◽  
...  
Keyword(s):  
Morphometric Analysis ◽  
Geometric Morphometric ◽  
Size And Shape ◽  
Geometric Morphometric Analysis

scholarly journals Intraspecific morphological variation of the scorpionfly Dicerapanorpa magna (Chou) (Mecoptera: Panorpidae) based on geometric morphometric analysis of wings

2016 ◽  
Vol 85 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Mei Liu ◽  
Na Ma ◽  
Bao-Zhen Hua
Keyword(s):  
Sexual Dimorphism ◽  
Morphometric Analysis ◽  
Divergence Time ◽  
Wing Size ◽  
Shape Variation ◽  
Geometric Morphometric ◽  
Size And Shape ◽  
Geometric Morphometric Analysis ◽  
Different Populations ◽  
Intraspecific Morphological Variation

Wing shape variation was investigated between the sexes and among four populations of the scorpionfly Dicerapanorpa magna (Chou, 1981) endemic to the Qin-Ba Mountains area, China through the landmark-based geometric morphometric approach. The results show that sexual dimorphism exists both in wing size and shape in D. magna. Significant differences exist in female wing size and shape among D. magna populations. The possible reasons of the wing variation are discussed based on the divergence time of D. magna in combination with the tectonic and climatic events in the Qin-Ba Mountains during the late Miocene-Pleistocene period. Whether reproductive isolation exists between different populations needs further research.

scholarly journals Short Communication: Landmark-based geometric morphometric analysis of wings to distinguish the sex of Aedes mosquito vectors in Thailand

2019 ◽  
Vol 20 (2) ◽  
pp. 419-424
Author(s):  
TANAWAT CHAIPHONGPACHARA ◽  
SEDTHAPONG LAOJUN
Keyword(s):  
Morphometric Analysis ◽  
Short Communication ◽  
Size Analysis ◽  
Centroid Size ◽  
Aedes Mosquito ◽  
Mosquito Vectors ◽  
Geometric Morphometric ◽  
Male And Female ◽  
Aedes Mosquitoes ◽  
Geometric Morphometric Analysis

Chaiphongpachara T, Laojun S. 2019. Short Communication: Landmark-based geometric morphometric analysis of wings to distinguish the sex of Aedes mosquito vectors in Thailand. Biodiversitas 20: 419-424. Aedes mosquitoes (Diptera: Culicidae) are medically important insects which are vectors of yellow fever, dengue fever, chikungunya, West Nile, and the Zika virus, emerging problems worldwide. Typically, male (non-vector) and female (vector) Aedes mosquitoes can easily be separated, however, the samples in the field is often incomplete, making it difficult to separate male and female mosquitoes. The goal of this research is to study the effectiveness of the landmark-based geometric morphometric technique to distinguish the sex of male and female Aedes mosquito vectors, including Ae. aegypti, Ae. albopictus, and Ae. scutellaris, in Thailand. Evaluation of wing size by centroid size analysis found that males and females are distinctly different; females are larger than males in three species of Aedes mosquito. The wing centroid size of Ae. aegypti and Ae. albopictus were very similar, however, Ae. scutellaris was smaller than in both other species. The wing shape between sexes was different in all groups of Aedes mosquitoes. The accuracy of the sex’s classification of Aedes vectors was quite high (more than > 80% from the cross-validated reclassification test). The results of this study prove that landmark-based geometric morphometric can distinguish sexes in Aedes vectors which can be used to solve problems in the field when it is necessary to distinguish the sexes of Aedes mosquitoes with damaged samples.

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