Morphological Variation Among Wild Populations of Chinese Rare Minnow (<i>Gobiocypris rarus</i>): Deciphering the Role of Evolutionary Processes

He, Yongtao; Li, Rui; Wang, Jianwei; Blanchet, Simon; Lek, Sovan

doi:10.2108/zsj.30.475

Cited by 16 publications

(9 citation statements)

References 64 publications

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“…If MSB is the mean square among populations, MSW is the mean square within populations, n i is the number of individuals in the i th populations, and a is the number of populations, and can be estimated as described as follows [10,66,67]: …”

Section: Methodsmentioning

confidence: 99%

Investigating the case of human nose shape and climate adaptation

et al. 2017

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The evolutionary reasons for variation in nose shape across human populations have been subject to continuing debate. An import function of the nose and nasal cavity is to condition inspired air before it reaches the lower respiratory tract. For this reason, it is thought the observed differences in nose shape among populations are not simply the result of genetic drift, but may be adaptations to climate. To address the question of whether local adaptation to climate is responsible for nose shape divergence across populations, we use Qst–Fst comparisons to show that nares width and alar base width are more differentiated across populations than expected under genetic drift alone. To test whether this differentiation is due to climate adaptation, we compared the spatial distribution of these variables with the global distribution of temperature, absolute humidity, and relative humidity. We find that width of the nares is correlated with temperature and absolute humidity, but not with relative humidity. We conclude that some aspects of nose shape may indeed have been driven by local adaptation to climate. However, we think that this is a simplified explanation of a very complex evolutionary history, which possibly also involved other non-neutral forces such as sexual selection.

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Section: Methodsmentioning

confidence: 99%

Investigating the case of human nose shape and climate adaptation

et al. 2017

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“…Nevertheless, researchers have identified the real phenomena of morphological and physiological alterations (i.e. genetic factors like natural selection, epigenetic inheritance) (Murta, 2000;Pigliucci, 2001), and effective population size and inbreeding (He et al, 2013). Furthermore the populations in this study may have originated from different ancestors.…”

Section: Discussionmentioning

confidence: 92%

“…Moreover, phenotypic plasticity in morphometric traits may often be adaptive (Robinson and Parsons, 2002). Moreover, phenotypical plasticity and adaptations completely or partially relied on external forces from the environment (He et al, 2013). Other environmental influences may involve heterochrony, changes in the relative timing of developmental events (Meyer, 1987) such as switches between growth and development (Martin, 1949).…”

Section: Discussionmentioning

confidence: 99%

Meristic and Morphometric Variations of Barred Spiny EEL Macrognathus pancalus Populations from Bangladeshi Freshwaters: An Insight Into Landmark-Based Truss Network System

Sarower-E-Mahfuj

Khatun

Boidya

et al. 2019

Croatian Journal of Fisheries

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The present research focuses to examine the meristic and landmark-based morphometric variations of barred spiny eel Macrognathus pancalus from four populations namely Dhakuria beel, Jessore (DBJ); Bohnni boar, Gopalgonj (BBG); the Arial kha river, Madaripur (AKRM) and the Nabaganga river, Jhenidah (NRJ) in Bangladeshi freshwaters. Six meristic counts were compared among four populations and significant differences were observed in number of caudal fin rays and number of pelvic fin rays in all meristic characters. The truss protocol was used in the present study based on six general morphometrics and fifteen truss measurements. Univariate statistics showed that five (standard length (SL), upper jaw length (UJL), lower jaw length (LJL), head depth (HD) and inter orbital (IO)) of six morphometric and eleven truss networks (viz. 2-3, 3-4, 5-6, 6-7, 7-8, 1-8, 2-8, 3-8, 3-7, 4-7 and 5-7) among fifteen truss measurements differed significantly. Cannonical discriminate function analyses were conducted among samples and the populations were fully intermingled. Pooled within-group correlation showed morphometric and landmark measurements; the first discriminant function (DF) accounted for 79%, the second DF accounted for 15.9% and third DF accounted for 5.1% of group variability. An euclidian dendrogram was prepared based on morphometric and truss measurements in four populations, where two clusters were mainly formed, in which first cluster formed by NRJ population was fully separated, and the second cluster was formed by two populations of AKRM and DBJ. Additionally, a subcluster BBG was formed with AKRM. On the basis of morphometric and truss measurements, 68.8%, 83.6%, 55.6% and 80% of original grouped cases were correctly classified in NRJ, AKRM, DBJ and BBG, respectively. These results specify the presence of different stocks of fish from four aquatic habitats. This study is highly significant for proper conservation and effective management of M. pancalus populations as well as for the scientific community for further research.

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“…Additionally, morphometric estimations, joined with image analysis, address a technique for improving fish stock designs (Bailey, 1997;Mahfuj et al, 2020a, b). Regardless, scientists have recognized the genuine phenomena of morphological and physiological modifications (for example genetic factors like epigenetic inheritance, characteristic determination) (Murta, 2000), and successful inbreeding and effective population size (He et al, 2013). Besides, the stocks in this experiment may have begun from various predecessors.…”

Section: Discussionmentioning

confidence: 99%

Stock identification of the Reba carp, Cirrhinus reba: Insight into conventional and truss network-based morphometrics

E-Mahfuj¹

2021

Egypt. J. of Aquatic Biolo. and Fish.

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Morphological Variation Among Wild Populations of Chinese Rare Minnow (Gobiocypris rarus): Deciphering the Role of Evolutionary Processes

Cited by 16 publications

References 64 publications

Investigating the case of human nose shape and climate adaptation

Investigating the case of human nose shape and climate adaptation

Meristic and Morphometric Variations of Barred Spiny EEL Macrognathus pancalus Populations from Bangladeshi Freshwaters: An Insight Into Landmark-Based Truss Network System

Stock identification of the Reba carp, Cirrhinus reba: Insight into conventional and truss network-based morphometrics

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