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Aberrant Colourations in Wild Snakes: Case Study in Neotropical Taxa and a Review of Terminology
SALAMANDRA 57(1): 124–138 Claudio Borteiro et al. SALAMANDRA 15 February 2021 ISSN 0036–3375 German Journal of Herpetology Aberrant colourations in wild snakes: case study in Neotropical taxa and a review of terminology Claudio Borteiro1, Arthur Diesel Abegg2,3, Fabrício Hirouki Oda4, Darío Cardozo5, Francisco Kolenc1, Ignacio Etchandy6, Irasema Bisaiz6, Carlos Prigioni1 & Diego Baldo5 1) Sección Herpetología, Museo Nacional de Historia Natural, Miguelete 1825, Montevideo 11800, Uruguay 2) Instituto Butantan, Laboratório Especial de Coleções Zoológicas, Avenida Vital Brasil, 1500, Butantã, CEP 05503-900 São Paulo, SP, Brazil 3) Universidade de São Paulo, Instituto de Biociências, Departamento de Zoologia, Programa de Pós-Graduação em Zoologia, Travessa 14, Rua do Matão, 321, Cidade Universitária, 05508-090, São Paulo, SP, Brazil 4) Universidade Regional do Cariri, Departamento de Química Biológica, Programa de Pós-graduação em Bioprospecção Molecular, Rua Coronel Antônio Luiz 1161, Pimenta, Crato, Ceará 63105-000, CE, Brazil 5) Laboratorio de Genética Evolutiva, Instituto de Biología Subtropical (CONICET-UNaM), Facultad de Ciencias Exactas Químicas y Naturales, Universidad Nacional de Misiones, Felix de Azara 1552, CP 3300, Posadas, Misiones, Argentina 6) Alternatus Uruguay, Ruta 37, km 1.4, Piriápolis, Uruguay Corresponding author: Claudio Borteiro, e-mail: [email protected] Manuscript received: 2 April 2020 Accepted: 18 August 2020 by Arne Schulze Abstract. The criteria used by previous authors to define colour aberrancies of snakes, particularly albinism, are varied and terms have widely been used ambiguously. The aim of this work was to review genetically based aberrant colour morphs of wild Neotropical snakes and associated terminology. We compiled a total of 115 cases of conspicuous defective expressions of pigmentations in snakes, including melanin (black/brown colour), xanthins (yellow), and erythrins (red), which in- volved 47 species of Aniliidae, Boidae, Colubridae, Elapidae, Leptotyphlopidae, Typhlopidae, and Viperidae. -
Aberrant Plumages in Grebes Podicipedidae
André Konter Aberrant plumages in grebes Podicipedidae An analysis of albinism, leucism, brown and other aberrations in all grebe species worldwide Aberrant plumages in grebes Podicipedidae in grebes plumages Aberrant Ferrantia André Konter Travaux scientifiques du Musée national d'histoire naturelle Luxembourg www.mnhn.lu 72 2015 Ferrantia 72 2015 2015 72 Ferrantia est une revue publiée à intervalles non réguliers par le Musée national d’histoire naturelle à Luxembourg. Elle fait suite, avec la même tomaison, aux TRAVAUX SCIENTIFIQUES DU MUSÉE NATIONAL D’HISTOIRE NATURELLE DE LUXEMBOURG parus entre 1981 et 1999. Comité de rédaction: Eric Buttini Guy Colling Edmée Engel Thierry Helminger Mise en page: Romain Bei Design: Thierry Helminger Prix du volume: 15 € Rédaction: Échange: Musée national d’histoire naturelle Exchange MNHN Rédaction Ferrantia c/o Musée national d’histoire naturelle 25, rue Münster 25, rue Münster L-2160 Luxembourg L-2160 Luxembourg Tél +352 46 22 33 - 1 Tél +352 46 22 33 - 1 Fax +352 46 38 48 Fax +352 46 38 48 Internet: http://www.mnhn.lu/ferrantia/ Internet: http://www.mnhn.lu/ferrantia/exchange email: [email protected] email: [email protected] Page de couverture: 1. Great Crested Grebe, Lake IJssel, Netherlands, April 2002 (PCRcr200303303), photo A. Konter. 2. Red-necked Grebe, Tunkwa Lake, British Columbia, Canada, 2006 (PGRho200501022), photo K. T. Karlson. 3. Great Crested Grebe, Rotterdam-IJsselmonde, Netherlands, August 2006 (PCRcr200602012), photo C. van Rijswik. Citation: André Konter 2015. - Aberrant plumages in grebes Podicipedidae - An analysis of albinism, leucism, brown and other aberrations in all grebe species worldwide. Ferrantia 72, Musée national d’histoire naturelle, Luxembourg, 206 p. -
A Case of Partial Albinism in Red Vented Bulbul (Pycnonotus Cafer) from Central Aravalli Foothills, Rajasthan
Journal on New Biological Reports ISSN 2319 – 1104 (Online) JNBR 7(2) 56 – 59 (2018) Published by www.researchtrend.net A case of partial Albinism in Red vented Bulbul (Pycnonotus cafer) from Central Aravalli Foothills, Rajasthan Vivek Sharma, Divaker Yadav, Meena Kumari, Akansha Verma and Shahin Bano Sheikh Maharshi Dayanand Saraswati University, Ajmer, Rajasthan, India *Corresponding author: [email protected] | Received: 07 April 2018 | Accepted: 29 May 2018 | ABSTRACT Birds are well known for their tremendous colourations and these colour patterns are species specific. Any abnormal condition in these colour patterns leads to Albinism, Xanthism, Erythrism and Melanism according to their pigment pattern. The present note is a case of partial albinism in Red vented Bulbul (Pycnonotus cafer) from Central Aravalli Foothills, Rajasthan. Key words: Partial albinism, Red-vented Bulbul, Central Aravalli foothills. Birds are considered as the most colourful creatures production or absence of the pigment melanin of the Mother Nature. They have unique colour mainly responsible for integumentory colour plumages in their different life periods i.e. breeding patterns. In birds this trait is regulated by genetic plumage (bright colour patterns during the breeding polymorphism. Albinism is best recognized by season), non-breeding (comparatively less colour abnormal body colouration in general and abnormal pattern during the rest period of life except the coloration of the skin, hair, feathers, scales or eyes breeding season) and eclipse plumage (transitory in particular (Kinner et al. 1985; Oetting & King phase between breeding and non breeding 1999). plumages and vice versa). To achieve these colour Albinism can be further classified in distinct patterns birds change their feather coats by types depending on specific characteristics of plucking off the old feathers and new feathers grow presence of melanin pigment. -
A Review of Colour Phenotypes of the Eastern Red-Backed Salamander, Plethodon Cinereus, in North America
A Review of Colour Phenotypes of the Eastern Red-backed Salamander, Plethodon cinereus , in North America JEAN -D AviD MooRE 1, 3 and MARtiN ouEllEt 2 ¹Forêt Québec, Ministère des Forêts, de la Faune et des Parcs, Direction de la recherche forestière, 2700 rue Einstein, Québec, Québec G1P 3W8 Canada 2Amphibia-Nature, 469 route d’irlande, Percé, Québec G0C 2l0 Canada 3Corresponding author: e-mail: [email protected] Moore, Jean-David, and Martin ouellet. 2014. A review of colour phenotypes of the Eastern Red-backed Salamander, Plethodon cinereus , in North America . Canadian Field-Naturalist 128(3): 250 –259. the Eastern Red-backed Salamander ( Plethodon cinereus ) is the most abundant salamander species in many forests of north - eastern North America. it is well-known for its colour polymorphism, which includes eight colour phenotypes: the red-backed (striped), lead-backed (unstriped) and erythristic morphs, as well as the iridistic, albino, leucistic, amelanistic and melanistic anomalies. Here we review the various colorations of P. cinereus , with the objective of facilitating the identification of these different phenotypes and of generating interest among field herpetologists and scientists reporting on this species. We also list six previously unpublished occurrences of colour variants in this species (1 case of erythrism, 3 of iridism, 1 of leucism, and 1 of partial leucism). to our knowledge, these cases include the first documented occurrence of iridism in the red-backed morph of P. cinereus , and the first two mentions of this colour anomaly in the lead-backed morph from Canada. Key Words: Phenotypes; coloration; red-backed; lead-backed; erythristic; colour morph; iridistic; albino; leucistic; amelanis - tic; melanistic ; colour anomaly ; Eastern Red-backed Salamander ; Plethodon cinereus ; North America Introduction thrism, 3 of iridism, 1 of leucism, and 1 of partial leu - of all North American amphibians, the Eastern Red- cism). -
First Complete Genome Sequence in Arborophila And
Zhou et al. Avian Res (2018) 9:45 https://doi.org/10.1186/s40657-018-0136-3 Avian Research RESEARCH Open Access First complete genome sequence in Arborophila and comparative genomics reveals the evolutionary adaptation of Hainan Partridge (Arborophila ardens) Chuang Zhou1†, Shuai Zheng1†, Xue Jiang2, Wei Liang3, Megan Price1, Zhenxin Fan2, Yang Meng1* and Bisong Yue1* Abstract Background: The Hainan Partridge (Arborophila ardens, Phasianidae, Galliformes) is an endemic species of Hainan Island, China, and it is classifed as globally vulnerable species. There are at least 16 species in genus Arborophila and no genome sequence is available. Methods: The whole genome of Hainan Partridge was de novo sequenced (with shotgun approach on the Illumina 2000 platform) and assembled. Results: The genome size of Arborophila ardens is about 1.05 Gb with a high N50 scafold length of 8.28 Mb and it is the frst high quality genome announced in Arborophila genus. About 9.19% of the genome was identifed as repeat sequences and about 5.88 million heterozygous SNPs were detected. A total of 17,376 protein-coding genes were predicted and their functions were annotated. The genome comparison between Hainan Partridge and Red Jungle- fowl (Gallus gallus) demonstrated a conserved genome structure. The phylogenetic analysis indicated that the Hainan Partridge possessed a basal phylogenetic position in Phasianidae and it was most likely derived from a common ancestor approximately 36.8 million years ago (Mya). We found that the Hainan Partridge population had experienced bottleneck and its efective population decreased from about 1,040,000 individuals 1.5 Mya to about 200,000 indi- viduals 0.2 Mya, and then recovered to about 460,000 individuals. -
New Record of Erythrism in Psittacara Leucophthalmus (Statius Muller
Scientific Note ISSN 1517-6770 New record of erythrism in Psittacara leucophthalmus (Statius Muller, 1776) (Psittaciformes: Psittacidae) in Southern Minas Gerais state, Southeastern Brazil Aloysio Souza de Moura1, Felipe Santana Machado1,2*, Marco Aurélio Leite Fontes1, Ravi Fernandes Mariano1 & Ana Carolina Maioli Campos Barbosa¹ ¹Departamento de Ciências Florestais, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil. E-mails: [email protected]; [email protected]; [email protected]; [email protected]. ²Governo do Estado de Minas Gerais, Escola Estadual Profa. Ana LetroStaacks, Timóteo, Minas Gerais, Brazil. *Corresponding author: Caixa postal 3037, CEP 37.200-000, Lavras, Minas Gerais. [email protected]. Abstract. The scientific literature mentions that neotropical birds of the family Psittacidae have some ten- dencies to natural and artificial changes (human food or manipulation) in their plumage colours. In studies of plumage aberrant of the parrots were categorized six types: albinism, erythrism, leucism, xantocroism, cyanism and melanism. We present a register of erythrism in species of Brazilian native parrot Psittacara leu- cophthalmus (Statius Muller, 1776). On the world, there is only one report of this type of aberrant plumage for Amazona aestiva (Linnaeus, 1758) and another to an African species Agapornis roseicollis, thus highlighting the importance of this record. Key-words: Bird, Parrot, Aberrant plumage. Resumo. Registro de Eritrismo em Psittacara leucophthalmus (Statius Muller, 1776) (Psittaciformes: Psit- tacidae), para o sul do Estado de Minas Gerais, sudeste brasileiro. Na literatura é mencionado que as aves neotropicais da família Psittacidae possuem algumas tendências a alterações naturais e artificiais (manipula- ção humana alimentar ou genética) na coloração de suas plumagens. -
ALECTORİS GRAECA) FARKLI BARINDIRMA ŞEKLİNİN YUMURTA VERİMİ, KULUÇKA ÖZELLİKLİKLERİ Ve YUMURTA KALİTESİ ÜZERİNE ETKİLERİ
T.C. FIRAT ÜNİVERSİTESİ SAĞLIK BİLİMLERİ ENSTİTÜSÜ ZOOTEKNİ ANABİLİM DALI KAYA KEKLİKLERİNDE (ALECTORİS GRAECA) FARKLI BARINDIRMA ŞEKLİNİN YUMURTA VERİMİ, KULUÇKA ÖZELLİKLİKLERİ ve YUMURTA KALİTESİ ÜZERİNE ETKİLERİ DOKTORA TEZİ Mehmet Hanifi AYSÖNDÜ ELAZIĞ–2005 ii ONAY SAYFASI Prof. Dr. Necip İLHAN Sağlık Bilimleri Enstitüsü Müdürü Bu tez Doktora Tezi Standartlarına uygun bulunmuştur. ………………….. Prof. Dr. Metin BAYRAKTAR Veteriner Fakültesi Zootekni Anabilim Dalı Başkanı Tez tarafımızdan okunmuş, kapsam ve kalite yönünden Doktora tezi olarak kabul edilmiştir. ………………………. Yrd. Doç. Dr. Orhan ÖZBEY Danışman Doktora Sınav Jüri Üyeleri Prof. Dr. Metin BAYRAKTAR …………………… Prof. Dr. Kazım ŞAHİN …………………… Doç. Dr. Kemal KIRIKÇI …………………… Yrd. Doç. Dr. Orhan ÖZBEY ..…………………... Yrd. Doç. Dr. Fikret ESEN ……………………. iii TEŞEKKÜR Bu araştırmanın yapılması sırasında bilimsel yardım ve desteklerini gördüğüm hocam Yrd. Doç. Dr. Orhan ÖZBEY’e, çalışmaya bilimsel katkılarıyla rehberlik ve literatür arşivinden yararlanmamı sağlayan sayın Doç. Dr. Kemal KIRIKÇI’ya, desteklerinden dolayı Tez izleme komitesi ile Fırat Üniversitesi Veteriner Fakültesi Zootekni Anabilim Dalı’ndaki değerli hocalarım ve çalışma arkadaşlarıma, katkılarından dolayı Fırat Üniversitesi Rektörlüğü, Bilimsel Araştırma Projeleri Yönetim Birimine ve yardımlarından dolayı Özge ÖZMEN ve eşim Serpil AYSÖNDÜ’ye teşekkür ederim. iv İÇİNDEKİLER Sayfa 1. ÖZET………………………………………………………………………………… 1 2. ABSTRACT…………………………………………………………………………. 2 3. GİRİŞ………………………………………………………………………………... 3 3.1. Keklik Türleri ve Kekliğin Zoolojik Sistemdeki Yeri……………………………... 5 3.2. Türkiye’de Yaşadığı Bölgelere Göre Keklik Türleri………………………………. 7 3.3. Dünyada Keklik Üretimi ve Av Turizmi İçindeki Yeri……………………………. 7 3.4. Türkiye’de Keklik Üretimi ve Av Turizmi İçindeki Yeri………………………….. 8 3.5. Yetiştirme Sistemleri……………………………………………………………...... 10 3.5.1. Kafes Sistemi…………………………………………………………………….. 10 3.5.2. Tamamen Yer Sistemi (Altlıklı Kümesler)………………………………………. 13 3.5.3. Yarı Açık Sistem (Sundurmalı Sistem)………………………………………….. -
EDWARD L. BRAUN Curriculum Vitae (April 2019)
EDWARD L. BRAUN Curriculum Vitae (April 2019) Biographical Information FULL NAME: Edward Louis Braun CURRENT POSITION: Professor of Biology WORK ADDRESS: Department of Biology University of Florida P.O. Box 118525 Gainesville, FL 32611-8525 DATE OF BIRTH: 12 July 1968 CONTACT INFORMATION: E-mail: [email protected] Phone (office): 352.846.1124 Web Site: http://people.clas.ufl.edu/ebraun/ FAX: 352.392.3704 Twitter: @EdwardLBraun1 My research focus is the intersection of biodiversity and genomics. Most of my work has been in the areas of molecular evolution, phylogenetics, and computational biology. I am interested in models of genomic change and the use of those models to make functional inferences at a variety of scales (ranging from molecules to whole organisms and populations). Appointments • Professor, Department of Biology, University of Florida, 2016-present. o Currently UF Term Professor • Associate Professor, Department of Biology, University of Florida, 2009-2016 • Assistant Professor, Department of Zoology. University of Florida, 2001-2009. o Additional appointments: § Graduate Faculty in Genetics and Genomics, University of Florida Genetics Institute § Affiliate Associate Curator in Invertebrate Zoology, Department of Natural History, Florida Museum of Natural History Professional Preparation • 1998-2001 Postdoctoral Scientist, Department of Plant Biology and Plant Biotechnology Center The Ohio State University, Columbus, OH § Postdoctoral Mentor: Erich Grotewold • 1997-1998 Postdoctoral Scientist, Position split between: National Center for Genome Resources (NCGR), Santa Fe, NM & University of New Mexico (UNM), Albuquerque, NM § Postdoctoral Mentors: Donald O. Natvig (UNM) & Peter A. Schad (NCGR) • 1991-1997 Ph.D. in Biology, University of New Mexico, Albuquerque, NM § Advisor: Margaret Werner-Washburne § Dissertation: Protein synthesis in stationary phase yeast: global patterns and characterization of Snz1p, a novel stationary-phase protein o Research and teaching experience as a Ph.D. -
Communicating Science for Conservation
Communicating Science for Conservation ISSN 0971-6378 (Print); 0973-2543 (Online) Magazine of Zoo Outreach Organization Vol. XXXV, No. 6 www.zoosprint.zooreach.org June 2020 Communicating science for conservation Vol. XXXV, No. 6, June 2020 ISSN 0971-6378 (Print); 0973-2543 (Online) Contents TidBITS A friend at 17000ft -- Kamakshi Lekshmanan, P. 1 Wildlife: After all these years! -- Prashant Mahajan, P. 2 Reptile Rap First record of erythrism in Eutropis cf macularia from Vadodara, Gujarat -- Nikunj Jambu, Pp. 3–4 Bird-o-soar Status and composition of avifauna in Kurud Dam, Raipur District - Chhattisgarh, India -- A.M.K. Bharos, Faiz Bux, Akhilesh Bharos & Jageshwar Verma, Pp. 5–21 Birds at KFRI Campus, Thrissur, Kerala, India -- P. Greeshma, Riju P. Nair, E.A. Jayson & P.M. Nishad, Pp. 22–28 Foraging behaviours of Baya Weaver Ploceus philippinus, during non-breeding seasons in northern Tamil Nadu, India -- M. Pandian, Pp. 29-32 Bird deaths by kite manjha in Jammu City -- Rahul Vikram Singh, Pp. 33–35 Ve t Br ie f Rediscovery of Cyclopodia sykesii, an ectoparasite on the Indian Flying Fox from Udayagiri Range, Odisha, India -- Ashirwad Tripathy, Pp. 36–38 Mammal Tales Plastic in Elephant dung -- Ankita Das, Pp. 39–40 book review Valley of Hope: Moyar and Vultures -- Byju, H., Pp. 41-42 Cover photo by Kamakshi Lekshmanan. A friend at 17000ft TidBITS Cold. Gripping cold. Sleet filled landscape. A white carpet welcome Tidat around 17,000BITS ft. As I immersed myself into the mountains of white, a handsome Red Fox rushed towards me. In the wild. A moment of thrill as the fox kept moving towards the vehicle. -
Novel Plumage Aberrations in Paraguayan Non-Passerine Birds, and the Definition of a New Plumage Aberration Unique to Psittacidae
Research Article Biodiversity and Natural History (2017) Vol. 3, No. 1, 24-28 Novel plumage aberrations in Paraguayan non-Passerine Birds, and the definition of a new plumage aberration unique to Psittacidae Nuevas aberraciones de plumaje en aves paraguayas no Passerinas y la definición de una nueva aberración de plumaje única a Psittacidae Paul Smith & Sergio D. Ríos Departamento de Arqueología y Paleontología. Secretaría Nacional de Cultura. Asunción, Paraguay. Museo Nacional de Historia Natural del Paraguay. San Lorenzo, Paraguay. *Correspondence author: [email protected] Abstract Anomalous plumage colourations are reported for three species of non-passerine birds from Paraguay, Limpkin (Aramaus guarauna; Aramidae), Nanday Parakeet (Nandayus nenday; Psittacidae), and the Little Woodpecker (Veniliornis passerinus; Picidae). A leucistic Limpkin is the first published report of a colour anomaly for the family Aramidae. The colour aberration in N. nenday is hypothesised to be a result of an excess of red psittacofulvin pigments, which are unique to the Psittacidae. Although the mechanisms causing this colour aberration remain unknown, we suggest the term psittacofulvism for the phenotypic effect observed. Key words: albinism, ino mutation, erythrism, leucism, Limpkin, Little Woodpecker, Nanday parakeet psittacofulvism. Resumen Se reportan anomalías en la coloración de tres aves no passeriformes del Paraguay, caraú Aramus guarauna (Aramidae), ñanday Nandayus nenday (Psittacidae) y carpinterito oliváceo Veniliornis passerinus (Picidae). Un caraú leucístico es el primer reporte publicado de coloración anómala en Aramidae. La presencia de coloración aberrante en Nandayus se hipotetiza como resultado de un exceso de pigmentos psittacofulvinos rojos, únicos a los Psittacidae. Aunque el mecanismo causante de esta aberración de color sigue siendo desconocido, sugerimos el término psittacofulvismo para el efecto fenotípico observado. -
Vietnamese Endemics (János Oláh)!
Collared Laughingthrush is one of the most sought-after Vietnamese endemics (János Oláh)! VIETNAM 12 MARCH – 2 APRIL 2017 LEADER: JÁNOS OLÁH Birdquest was the pioneer birdwatching company to take birders to Vietnam and ever since we have returned regularly to this amazing country! Indochina has many endemics and an additional wide range of special birds. Vietnam hosts a fairly large number of birds found nowhere else, and it is amazing how much more we see nowadays on the tour compared to the lists of 1990’s. Especially since 2005 a lot of new birding sites and a new generation of birders emerged with the help of the growing economy of the country. This was the time when we revised our itinerary and again we were the first to visit the Central Highlands for some newly described birds. The itinerary keeps changing with new birds and locations being found and we try to keep up with all the changes. For some years we were visiting Ba Be National Park in the north to see the very rare White-eared Night Heron but in 2016 and 2017 we did not go to the site (despite it being in the itinerary) as there were no breeding locations known any longer. The local farmers destroyed the nest in 2016 and it has not been relocated, so seeing the bird became very difficult again. It is not going to be in our programme from 2018 but in case of favourable news before the tour, we can organize a short extension for those who want to try. -
ERYTHRISM in the SMOOTH SNAKE, Coronella Austriaca (LAURENTI, 1768), RECORDED from GEORGIA Zdeněk Mačát,1 David Hegner,2
Russian Journal of Herpetology Vol. 23, No. 1, 2016, pp. 73 – 76 ERYTHRISM IN THE SMOOTH SNAKE, Coronella austriaca (LAURENTI, 1768), RECORDED FROM GEORGIA Zdenìk Maèát,1 David Hegner,2 and Daniel Jablonski3 Submitted June 23, 2015. Color aberration are frequently known in snakes, however erythrism is one of the rarest. In this paper, we report the capture of one erythristic male of Coronella austriaca from Georgia and we also present actual knowledge about color aberration in this species. Keywords: color aberration; Colubridae; Coronella austriaca; Caucasus. Three classes of chromatophores have impact upon 2014), or Zamenis longissimus (Zadravec and Lauš, coloration of reptiles (Bechtel, 1995; Vitt and Caldwell, 2011). One species, Hierophis carbonarius (also known 2013): melanophores (brown to black pigment cells), as former subspecies of H. viridiflavus in traditional tax- iridiophores (produce the shiny iridescent and reflecting onomy, see Mezzasalma et al. 2015)), is naturally skin) and xanthophores (yellow and red pigment cells). melanistic in adult age stage (Arnold and Ovenden, Different types of color aberrations are slightly wide- 2002). Cases of albinism and leucism are also common spread between all animal groups, usually results of gene color anomalies, but survival rate of individuals in nature mutations in development or uncommon distribution of is probably low (e.g., Bechtel and Bechtel, 1981; chromatophores in the skin (Bechtel, 1995). In reptiles, Krecsák, 2008). It is presenting as a white (yellow- eight different types of color aberrations have been de- ish/pinkish) body with red or dark eyes (Bechtel, 1995). scribed; most common are albinism, leucism or mela- These anomalies have been recorded e.g., in Natrix mau- nism and rare are amelanism, axanthism, erythrism, hy- ra (Pérez and Collado, 1975), N.