Cases of colouration anomalies in small mammals of Poland, and reasons for their incidence

Łopucki, Rafał; Mróz, Iwona

doi:10.2478/v10067-011-0006-4

Cited by 23 publications

(24 citation statements)

References 19 publications

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“…The dorsum was the part where most individuals Considering the effects of geographic isolation in the emergence of recessive traits (e. g., bottleneck effect; Bensch et al 2000;Lopucki and Mróz 2010), our findings suggest that some populations of A. affinis might be experiencing inbreeding due to either the discontinuous distribution of this species (Roach 2016) or to habitat fragmentation in the Colombian Andes (Kattan et al 1994;Kattan and Alvarez-López 1996). According to the International Union for Conservation of Nature (IUCN), A. affinis is listed as Least Concern since a large population is presumed from its wide overall distribution range (Roach 2016).…”

Section: Resultsmentioning

confidence: 67%

Leucism in Akodon affinis (Allen, 1912) (Rodentia: Cricetidae)

Montoya-Bustamante

Zapata-Mesa

Murillo‐García

2017

Therya

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Leucism is a condition where animals show a loss of pigments on certain parts of their skin, without affecting soft tissue, a condition that has been poorly reported for Neotropical rodents. Therefore, our goal was to report leucism for Akodon affinis, an endemic species from Colombia, and to analyze the pattern of leucism prevalence in different populations. A. affinis specimens deposited in the Mammals Collection of Universidad del Valle (UV) were examined, and any traces of leucism and its prevalence were recorded for 12 different localities where this species was found. These localities were sampled in different years. The association between incidence of leucism and sex was assessed using a Two-tailed Fisher's exact test. A total of 11 individuals from five localities displayed traces of leucism in different parts of their body (Table 1, Appendix 1), including cheeks, dorsum and venter (Figure 1). The analysis revealed that the incidence of leucism was higher in males vs. females. Traces of leucism were most frequent in the dorsum than any other part of their body. Although this species is considered as a Least Concern by the International Union for Conservation of Nature (IUCN), these findings suggest that populations of A. affinis might be experiencing inbreeding; however, more information is needed to establish the reproductive and survival consequences of this condition on A. affinis populations.El leucismo es una condición donde los animales presentan una pérdida de pigmentos en ciertas partes de su piel, sin afectar tejido blando, condición que ha sido pobremente reportada para roedores neotropicales. Por lo tanto, nuestro objetivo fue reportar leucismo en Akodon affinis, una especie endémica de Colombia, y analizar su patrón de prevalencia en diferentes poblaciones. Una revisión de los individuos de A. affinis depositados en la Colección de Mamíferos de la Universidad del Valle (UV) fue llevada a cabo, donde se registró información de leucismo y su prevalencia para 12 localidades diferentes donde esta especie fue encontrada. Estas localidades fueron muestreadas en diferentes años. La asociación entre la incidencia de leucismo y el sexo se evaluó con una prueba exacta de Fisher a dos colas. Un total de 11 individuos de cinco localidades diferentes fueron encontrados con rastros de leucismo en diferentes partes de su cuerpo (Tabla 1, Apéndice 1), incluyendo sus mejillas, dorso y vientre (Figura1). Los resultados indican que la incidencia de leucismo fue mayor en machos que en hembras. Por otro lado, los rastros de leucismo fueron más frecuentes en el dorso en comparación a las otras partes del cuerpo. Aunque esta especie es considerada como Preocupación Menor por la Unión Internacional para la Conservación de la Naturaleza (UICN), estos hallazgos sugieren que las poblaciones de A. affinis pueden estar sufriendo de endogamia; sin embargo, es necesaria más información para establecer las consecuencias de esta condición sobre la reproducción y supervivencia de las poblaciones de A. affinis. The Colombian ...

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Section: Resultsmentioning

confidence: 67%

Leucism in Akodon affinis (Allen, 1912) (Rodentia: Cricetidae)

Montoya-Bustamante

Zapata-Mesa

Murillo‐García

2017

Therya

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“…Previous studies (Čanády et al, 2008; Čanády, 2015) have shown that among rodents, several genera contain several species whose color anomalies have been described in studies from several countries (e.g., Łopucki and Mróz, 2010;McCardle, 2012;Steen and Sonerud, 2012;Łopucki et al, 2013), including the Czech Republic. For instance, records of flavistic specimens have been reported in Apodemus flavicollis (Hanák, 1957) and A. sylvaticus (Štusák, 1987).…”

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confidence: 96%

“…Several authors (Caro, 2005;Imes et al, 2006;Čanády et al, 2008;Łopucki and Mróz, 2010;McCardle, 2012;Nedyalkov et al, 2014;Čanády, 2015) have shown that mammalian coloration is most often the effect of the presence or absence of melanin pigment in the cortex and medulla of the hair, the epidermis of the skin, and the iris of the eyes. Mammals show gradual variation in color across populations, whereas some populations exhibit discontinuous variations and are either white or black (Caro, 2005).…”

mentioning

confidence: 99%

“…Similarly, several findings of colored anomalies (e.g., Husson, 1954;Hanák, 1957;Green, 1977;Štusák, 1987;Ciechanowski, 2002) were confirmed for other species of the genus Apodemus. Łopucki and Mróz (2010), who summarized several data with anomalies of coloration among rodents in Poland, showed that the majority of cases were recorded in habitats with various degrees of isolation by suboptimal or unfavorable habitats. This confirms the hypothesis regarding the influence of environmental conditions on the incidence of recessive alleles in populations of ground-dwelling small mammals (Łopucki and Mróz, 2010).…”

mentioning

confidence: 99%

“…Łopucki and Mróz (2010), who summarized several data with anomalies of coloration among rodents in Poland, showed that the majority of cases were recorded in habitats with various degrees of isolation by suboptimal or unfavorable habitats. This confirms the hypothesis regarding the influence of environmental conditions on the incidence of recessive alleles in populations of ground-dwelling small mammals (Łopucki and Mróz, 2010). Therefore, the observation from Slovakia was in accordance with the mentioned findings, since the trapped mouse originated from a small green urban area.…”

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confidence: 99%

See 2 more Smart Citations

First record of a flavistic black-striped field mouse (Apodemus agrarius) in Slovakia

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Camera trap records of leucistic Eurasian badgers (Meles meles) in central Norway

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Coat coloration plays an important adaptive role in mammals, functioning as camouflage and in both intra-and interspecific communication (Caro, 2005). Coloration anomalies due to a deficit or excess of the production of melanin, such as albinism, leucism, erythrism, and melanism, are relatively rare in wild mammals, with only a few records of single individuals for some species (Abreu et al., 2013;Łopucki & Mróz, 2010). Melanism is characterized by an excess of melanin resulting in a darker than normal coat coloration, while albinism and leucism are characterized by a deficit of melanin, where albinos are distinguished by the total lack of pigmentation including in the eyes, resulting in a lighter-than-normal coat coloration (Sage, 1962). Erythrism is also characterized by a deficit of melanin, but with an abundance of reddish color resulting in a lighter and more red appearance compared with the normal phenotype (Laacke et al., 2006). These colorations often occur in isolated and genetically homogenous populations as they are caused by single mutations in specific genes (Hubbard et al., 2010). There are some studies showing the adaptive advantage of coat color mutations (e.g., Linnen et al., 2009), but these studies are rare (Hubbard et al.

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Cases of colouration anomalies in small mammals of Poland, and reasons for their incidence

Cited by 23 publications

References 19 publications

Leucism in Akodon affinis (Allen, 1912) (Rodentia: Cricetidae)

Leucism in Akodon affinis (Allen, 1912) (Rodentia: Cricetidae)

First record of a flavistic black-striped field mouse (Apodemus agrarius) in Slovakia

Camera trap records of leucistic Eurasian badgers (Meles meles) in central Norway

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