Pub Date : 2012-09-26DOI: 10.7325/GALEMYS.2012.N05
J. Barrull, I. Maté
{"title":"Primera cita de gineta (Genetta genetta L., 1758) melánica en Cataluña","authors":"J. Barrull, I. Maté","doi":"10.7325/GALEMYS.2012.N05","DOIUrl":"https://doi.org/10.7325/GALEMYS.2012.N05","url":null,"abstract":"","PeriodicalId":143015,"journal":{"name":"Galemys, Spanish Journal of Mammalogy","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132080987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-09-26DOI: 10.7325/GALEMYS.2012.N03
Cecilia Montiel, M. Miñarro
{"title":"Aberraciones cromáticas en el topo ibérico (Talpa occidentalis Cabrera, 1907)","authors":"Cecilia Montiel, M. Miñarro","doi":"10.7325/GALEMYS.2012.N03","DOIUrl":"https://doi.org/10.7325/GALEMYS.2012.N03","url":null,"abstract":"","PeriodicalId":143015,"journal":{"name":"Galemys, Spanish Journal of Mammalogy","volume":"415 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133963835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-09-26DOI: 10.7325/GALEMYS.2012.N04
J. A. Pujol
{"title":"Recuperación de un topónimo geográfico relativo a la foca monje Monachus monachus (Hermann, 1779) en el litoral de Torrevieja (Alicante)","authors":"J. A. Pujol","doi":"10.7325/GALEMYS.2012.N04","DOIUrl":"https://doi.org/10.7325/GALEMYS.2012.N04","url":null,"abstract":"","PeriodicalId":143015,"journal":{"name":"Galemys, Spanish Journal of Mammalogy","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116224475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-09-26DOI: 10.7325/GALEMYS.2012.N02
M. Miñarro
{"title":"Un caso de albinismo en topillo lusitano, Microtus lusitanicus (Gerbe, 1879)","authors":"M. Miñarro","doi":"10.7325/GALEMYS.2012.N02","DOIUrl":"https://doi.org/10.7325/GALEMYS.2012.N02","url":null,"abstract":"","PeriodicalId":143015,"journal":{"name":"Galemys, Spanish Journal of Mammalogy","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123760800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-09-26DOI: 10.7325/GALEMYS.2012.A02
Roberto J. Hermida, F. Lamas, D. Graña, S. Rial, F. Cerqueira, Manuel Arzúa, Ramón Seage
This paper provides 755 new records of bats from Galicia belonging to a total of 22 species. These results are primarily from surveys conducted between 2007-2010, covering a total of 145 UTM 10x10 k grid cells. The utilization for the first time in Galicia of three complementary methodologies has allowed to go deeply into the knowledge of discrete species and, generally, to extend the known range of most of the species in Galicia. Furthermore, Myotis alcathoe, Myotis escalerai, Myotis spA and Nyctalus lasiopterus are recorded for the first time. It also provides data on different aspects of their biology and recommendations for the conservation of some species.
{"title":"Contribución al conocimiento de la distribución de los Murciélagos (O. Chiroptera) en Galicia","authors":"Roberto J. Hermida, F. Lamas, D. Graña, S. Rial, F. Cerqueira, Manuel Arzúa, Ramón Seage","doi":"10.7325/GALEMYS.2012.A02","DOIUrl":"https://doi.org/10.7325/GALEMYS.2012.A02","url":null,"abstract":"This paper provides 755 new records of bats from Galicia belonging to a total of 22 species. These results are primarily from surveys conducted between 2007-2010, covering a total of 145 UTM 10x10 k grid cells. The utilization for the first time in Galicia of three complementary methodologies has allowed to go deeply into the knowledge of discrete species and, generally, to extend the known range of most of the species in Galicia. Furthermore, Myotis alcathoe, Myotis escalerai, Myotis spA and Nyctalus lasiopterus are recorded for the first time. It also provides data on different aspects of their biology and recommendations for the conservation of some species.","PeriodicalId":143015,"journal":{"name":"Galemys, Spanish Journal of Mammalogy","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124403039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-09-26DOI: 10.7325/GALEMYS.2012.N01
Fulgencio Lisón, Julián Picazo, M. López
65 El murcielago ratonero patudo Myotis capaccinii (Bonaparte, 1837) es una especie de tamano pequeno y distribucion circunmediterranea fragmentada (Dietz et al. 2009), que en Espana se distribuye principalmente por la zona de Levante, aunque tambien aparece en zonas mas internas (Almenar et al. 2007, Alcalde et al. 2008, Flaquer et al. 2010, Lison et al. 2010). Es una especie tipicamente cavernicola que tiene preferencias por zonas de aguas calmadas y con buena vegetacion de ribera. Es una especie sedentaria, aunque suele llevar a cabo cortos desplazamientos entre refugios (Papadatou et al. 2009). Es la unica especie de quiroptero que aparece como “En Peligro de Extincion” dentro del Catalogo Nacional de Especies Amenazadas (R.D. 139/2011). Las mejores poblaciones de la especie se encuentran en la zona levantina (Almenar et al. 2007, Flaquer et al. 2010, Lison et al. 2010, 2011). En la presente nota, se cita por primera vez en el Parque Natural Lagunas de Ruidera (Castilla-La Mancha). En febrero de 2011, en el marco de la inspeccion de refugios cavernicolas en el Parque Natural de las Lagunas de Ruidera se encontraron cuatro cadaveres de murcielagos en una de las dos entradas de un antiguo tunel para la conduccion de agua (Figura 1), que esta situado a 830 m.s.n.m (Cuadricula UTM 10x10: 30SWJ11) y es utilizado por varias especies de murcielagos cavernicolas (Tarancon y Picazo 2009). Se tomaron muestras de la membrana alar de los cadaveres para su identificacion mediante marcadores moleculares en la Estacion Biologica de Donana (CSIC). El estado de descomposicion de los cadaveres permitio su identificacion como un murcielago ratonero “trawling”, y por la latitud de la zona, en principio los autores los atribuyeron a la especie Myotis daubentonii (Kuhl, 1817). Sin embargo, los analisis geneticos posteriores revelaron que pertenecian a Myotis capaccinii, constituyendo la primera cita de esta especie para el Parque Natural Lagunas de Ruidera. Asi mismo, su presencia en la cuadricula 30SWJ11 constituye la primera cita para una cuadricula de la provincia de Ciudad Real y la segunda para la provincia de Albacete (Almenar et al. 2007). Este refugio se lleva siguiendo varios anos y siempre se ha observado la presencia de murcielagos ratoneros pequenos (Tarancon y Picazo 2009). El Parque Natural Laguna de Ruidera constituye un habitat optimo para M. capacinii ya que cumple con los requisitos esenciales para la especie (Almenar et al. 2006, 2009, Biscardi et al. 2007) y ya que tiene la capacidad de explotar una gran superficie de habitats acuaticos alrededor de la colonia (Almenar et al. Primera cita del murcielago ratonero patudo Myotis capaccinii (Bonaparte, 1837) en el Parque Natural Lagunas de Ruidera (Castilla-La Mancha)
65 murcielago ratonero大眼金枪鱼Myotis capaccinii(波拿巴,1837)是一种方便的小和几何circunmediterranea分散迪茨(et al . 2009),并在西班牙主要是通过东方区,但也会出现在更多的内部地区(Almenar et al。2007年,市长et al。2008年,Flaquer et al。2010年,Lison et al . 2010)。它是一种典型的洞穴物种,喜欢平静的水域和良好的河岸植被。它是一种定居的物种,尽管它经常在避难所之间进行短途旅行(Papadatou et al. 2009)。它是唯一一种在国家濒危物种目录(R.D. 139/2011)中被列为“濒临灭绝”的翼手龙物种。该物种的最佳种群分布在东部地区(Almenar et al. 2007, Flaquer et al. 2010, Lison et al. 2010, 2011)。在本报告中,它首次被引用在拉古纳斯德鲁伊德拉自然公园(卡斯蒂利亚-拉曼查)。2011年2月,根据庇护所的inspeccion cavernicolas Ruidera缺陷自然公园发现了蝙蝠在四种死人的两张旧隧道conduccion水(图1),这离830 m.s.n.m (Cuadricula UTM 10x10: 30SWJ11)和若干种类的蝙蝠使用cavernicolas (Tarancon补过2009年)。在多纳纳生物站(CSIC)采集尸体翅膜样本,通过分子标记进行鉴定。尸体的分解状态使其被鉴定为“拖尾”鼠蝠,根据该地区的纬度,作者原则上将其归为Myotis daubentonii (Kuhl, 1817)。然而,随后的基因分析显示,它们属于Myotis capaccinii,这是该物种在Lagunas de Ruidera自然公园的第一次引用。同样,它在30SWJ11网格中的出现是雷亚尔城省网格的第一次约会,也是阿尔巴塞特省网格的第二次约会(Almenar et al. 2007)。这个避难所已经存在了几年,小鼠蝙蝠的存在一直被观察到(Tarancon和Picazo, 2009)。Ruidera湖自然公园是生境optimo m . capacinii因为符合关键物种(Almenar et al, 2006年、2009年Biscardi et al . 2007)既然有能力已经大面积爆炸habitats acuaticos在科隆Almenar et al。在拉古纳斯德鲁德拉自然公园(卡斯蒂利亚-拉曼查),Myotis capaccinii(波拿巴,1837)的第一次约会
{"title":"Primera cita del murciélago ratonero patudo Myotis capaccinii (Bonaparte, 1837) en el Parque Natural Lagunas de Ruidera (Castilla-La Mancha)","authors":"Fulgencio Lisón, Julián Picazo, M. López","doi":"10.7325/GALEMYS.2012.N01","DOIUrl":"https://doi.org/10.7325/GALEMYS.2012.N01","url":null,"abstract":"65 El murcielago ratonero patudo Myotis capaccinii (Bonaparte, 1837) es una especie de tamano pequeno y distribucion circunmediterranea fragmentada (Dietz et al. 2009), que en Espana se distribuye principalmente por la zona de Levante, aunque tambien aparece en zonas mas internas (Almenar et al. 2007, Alcalde et al. 2008, Flaquer et al. 2010, Lison et al. 2010). Es una especie tipicamente cavernicola que tiene preferencias por zonas de aguas calmadas y con buena vegetacion de ribera. Es una especie sedentaria, aunque suele llevar a cabo cortos desplazamientos entre refugios (Papadatou et al. 2009). Es la unica especie de quiroptero que aparece como “En Peligro de Extincion” dentro del Catalogo Nacional de Especies Amenazadas (R.D. 139/2011). Las mejores poblaciones de la especie se encuentran en la zona levantina (Almenar et al. 2007, Flaquer et al. 2010, Lison et al. 2010, 2011). En la presente nota, se cita por primera vez en el Parque Natural Lagunas de Ruidera (Castilla-La Mancha). En febrero de 2011, en el marco de la inspeccion de refugios cavernicolas en el Parque Natural de las Lagunas de Ruidera se encontraron cuatro cadaveres de murcielagos en una de las dos entradas de un antiguo tunel para la conduccion de agua (Figura 1), que esta situado a 830 m.s.n.m (Cuadricula UTM 10x10: 30SWJ11) y es utilizado por varias especies de murcielagos cavernicolas (Tarancon y Picazo 2009). Se tomaron muestras de la membrana alar de los cadaveres para su identificacion mediante marcadores moleculares en la Estacion Biologica de Donana (CSIC). El estado de descomposicion de los cadaveres permitio su identificacion como un murcielago ratonero “trawling”, y por la latitud de la zona, en principio los autores los atribuyeron a la especie Myotis daubentonii (Kuhl, 1817). Sin embargo, los analisis geneticos posteriores revelaron que pertenecian a Myotis capaccinii, constituyendo la primera cita de esta especie para el Parque Natural Lagunas de Ruidera. Asi mismo, su presencia en la cuadricula 30SWJ11 constituye la primera cita para una cuadricula de la provincia de Ciudad Real y la segunda para la provincia de Albacete (Almenar et al. 2007). Este refugio se lleva siguiendo varios anos y siempre se ha observado la presencia de murcielagos ratoneros pequenos (Tarancon y Picazo 2009). El Parque Natural Laguna de Ruidera constituye un habitat optimo para M. capacinii ya que cumple con los requisitos esenciales para la especie (Almenar et al. 2006, 2009, Biscardi et al. 2007) y ya que tiene la capacidad de explotar una gran superficie de habitats acuaticos alrededor de la colonia (Almenar et al. Primera cita del murcielago ratonero patudo Myotis capaccinii (Bonaparte, 1837) en el Parque Natural Lagunas de Ruidera (Castilla-La Mancha)","PeriodicalId":143015,"journal":{"name":"Galemys, Spanish Journal of Mammalogy","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132486293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-09-26DOI: 10.7325/GALEMYS.2012.N07
S. Salvador
1999) que en la Peninsula Iberica ocupa unicamente su franja mas septentrional y de mayor altitud (Lopez-Martin 2007), en donde su presencia se restringe a los bosques eurosiberianos de coniferas y caducifolios (Ruiz-Olmo & Lopez-Martin 2007, Barja 2008). En Cataluna la marta se distribuye de manera casi continua por el Pirineo axial y Prepirineo hasta el tramo alto del rio Ter, en la provincia de Girona (Ruiz-Olmo & Lopez Martin 1995), encontrando su optimo ecologico en los bosques subalpinos de coniferas (Lopez-Martin 2003). En 1985 un craneo catalogado como de
在伊比利亚半岛,它只占据了最北部和海拔最高的地带(Lopez-Martin 2007),在那里它的存在仅限于欧洲西伯利亚针叶林和落叶林(Ruiz-Olmo & Lopez-Martin 2007, Barja 2008)。在Cataluna, la marta几乎连续地分布在比利牛斯轴和比利牛斯前比利牛斯山脉,直到赫罗纳省Ter河的上游(Ruiz-Olmo & Lopez Martin 1995),在亚高山针叶林中找到了它的最佳生态(Lopez-Martin 2003)。1985年,一个头骨被归类为
{"title":"Citas de marta, Martes martes (Linnaeus, 1758), en el límite oriental de su distribución en la Península Ibérica","authors":"S. Salvador","doi":"10.7325/GALEMYS.2012.N07","DOIUrl":"https://doi.org/10.7325/GALEMYS.2012.N07","url":null,"abstract":"1999) que en la Peninsula Iberica ocupa unicamente su franja mas septentrional y de mayor altitud (Lopez-Martin 2007), en donde su presencia se restringe a los bosques eurosiberianos de coniferas y caducifolios (Ruiz-Olmo & Lopez-Martin 2007, Barja 2008). En Cataluna la marta se distribuye de manera casi continua por el Pirineo axial y Prepirineo hasta el tramo alto del rio Ter, en la provincia de Girona (Ruiz-Olmo & Lopez Martin 1995), encontrando su optimo ecologico en los bosques subalpinos de coniferas (Lopez-Martin 2003). En 1985 un craneo catalogado como de","PeriodicalId":143015,"journal":{"name":"Galemys, Spanish Journal of Mammalogy","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116992500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-09-10DOI: 10.7325/GALEMYS.2012.A01
J. Duarte, M. A. Farfán, J. Fa, Mario Vargas
We followed a red fox culling campaign that employed traditional cable snares to control numbers in a hunting estate in the Serranía de Ronda (Andalusia, southern Spain). We assessed abundance and presence of carnivore species within the area where fox culling took place by means of faecal counts within regularly walked paths. Twenty animals of four different taxa were snared during 238 nights in 36 locations. Through interviews with informed locals we established there were eight carnivore species present in the study area. Capture efficiency was 1.52 foxes per 1,000 trap-nights; the ISO-selectivity was 65% and the negative specific selectivity 50%. Despite daily checks of snares, there was a very high mortality (>80%) of target and non-target species. Moreover, a large proportion of the animals were caught by the neck. Our results suggest that this traditional method (snares without stops) of predator control should not be used.
我们跟踪了在Serranía de Ronda(安达卢西亚,西班牙南部)的一个狩猎庄园进行的红狐扑杀活动,该活动采用传统的电缆陷阱来控制数量。我们通过定期步行路径内的粪便计数,评估了在进行狐狸扑杀的区域内食肉动物物种的丰度和存在性。在36个地点的238个夜晚,共捕获了4个不同分类群的20只动物。通过对当地知情人士的采访,我们确定在研究区域有8种食肉动物。捕获效率为每1000个陷阱夜捕获1.52只狐狸;iso选择性为65%,负比选择性为50%。尽管每天检查陷阱,但目标和非目标物种的死亡率非常高(>80%)。此外,很大一部分动物被扼住了脖子。我们的研究结果表明,这种传统的捕食者控制方法(不停止陷阱)不应该使用。
{"title":"How effective and selective is traditional Red Fox snaring?","authors":"J. Duarte, M. A. Farfán, J. Fa, Mario Vargas","doi":"10.7325/GALEMYS.2012.A01","DOIUrl":"https://doi.org/10.7325/GALEMYS.2012.A01","url":null,"abstract":"We followed a red fox culling campaign that employed traditional cable snares to control numbers in a hunting estate in the Serranía de Ronda (Andalusia, southern Spain). We assessed abundance and presence of carnivore species within the area where fox culling took place by means of faecal counts within regularly walked paths. Twenty animals of four different taxa were snared during 238 nights in 36 locations. Through interviews with informed locals we established there were eight carnivore species present in the study area. Capture efficiency was 1.52 foxes per 1,000 trap-nights; the ISO-selectivity was 65% and the negative specific selectivity 50%. Despite daily checks of snares, there was a very high mortality (>80%) of target and non-target species. Moreover, a large proportion of the animals were caught by the neck. Our results suggest that this traditional method (snares without stops) of predator control should not be used.","PeriodicalId":143015,"journal":{"name":"Galemys, Spanish Journal of Mammalogy","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128720613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Junta de Castilla y León carried out several campaigns of control of common vole (Microtus arvalis) from 2007 to 2009, which coincided with a demographic explosion of the species. Anticoagulants products like chlorophacinone and bromadiolone were used during these campaigns. Information on the treatment campaigns which used rodenticides was compared with two studies which had been carried out to estimate the abundance of common vole, so as to evaluate the effectiveness of such treatments on the control of Microtus arvalis populations. The first study is based on the percentage of Microtus arvalis in barn-owl (Tyto alba) diet and the second by making road transects to find the abundance of diurnal birds of prey. Sixteen batches of barn-owl pellets were analysed –one each trimester, between January 2006 and december 2009– and 3,964 items of prey were identified. 96.3% of them were micromammals of seven species, and 63.7% were common vole. The percentages of Microtus arvalis / trimester varied from 18.0% –after the collapse of a demographic explosion– to 96.4% at the demographic explosion’s peak. These results made it possible to detect two demographic explosions, one starting at the beginning of the second trimester of 2006 and finishing in the second trimester of 2008. The second started at the second semester of 2009 and it seemed to enter a collapse stage at the end of the same year. On the road, 5,387 birds of prey of fifteen different species were counted from January 2005 to December 2009. This is a monthly Kilometric Abundance Index average of 69.0 individuals/100 km. The data showed that peaks of abundance of birds of prey coincided in time with both common vole demographic explosions. Nevertheless, the period considered for each demographic explosion was significantly shortened. According to the bird data, the first cycle started in July 2006 and continued until February 2007. The second cycle started in May 2009 and continued until December 2009. Both studies reveal the ineffectiveness of the chemical treatments, which were carried out some months after the beginning of the demographic explosion, which was already at its highest peak or at collapse stage. The effect of these treatments on non-target species is also discussed.
{"title":"¿Tuvieron efecto los tratamientos químicos contra los topillos?: inferencia a partir del estudio de la dieta de la lechuza común y censos de rapaces diurnas?","authors":"F. Jubete","doi":"10.7325/13","DOIUrl":"https://doi.org/10.7325/13","url":null,"abstract":"The Junta de Castilla y León carried out several campaigns of control of common vole (Microtus arvalis) from 2007 to 2009, which coincided with a demographic explosion of the species. Anticoagulants products like chlorophacinone and bromadiolone were used during these campaigns. Information on the treatment campaigns which used rodenticides was compared with two studies which had been carried out to estimate the abundance of common vole, so as to evaluate the effectiveness of such treatments on the control of Microtus arvalis populations. The first study is based on the percentage of Microtus arvalis in barn-owl (Tyto alba) diet and the second by making road transects to find the abundance of diurnal birds of prey. Sixteen batches of barn-owl pellets were analysed –one each trimester, between January 2006 and december 2009– and 3,964 items of prey were identified. 96.3% of them were micromammals of seven species, and 63.7% were common vole. The percentages of Microtus arvalis / trimester varied from 18.0% –after the collapse of a demographic explosion– to 96.4% at the demographic explosion’s peak. These results made it possible to detect two demographic explosions, one starting at the beginning of the second trimester of 2006 and finishing in the second trimester of 2008. The second started at the second semester of 2009 and it seemed to enter a collapse stage at the end of the same year. On the road, 5,387 birds of prey of fifteen different species were counted from January 2005 to December 2009. This is a monthly Kilometric Abundance Index average of 69.0 individuals/100 km. The data showed that peaks of abundance of birds of prey coincided in time with both common vole demographic explosions. Nevertheless, the period considered for each demographic explosion was significantly shortened. According to the bird data, the first cycle started in July 2006 and continued until February 2007. The second cycle started in May 2009 and continued until December 2009. Both studies reveal the ineffectiveness of the chemical treatments, which were carried out some months after the beginning of the demographic explosion, which was already at its highest peak or at collapse stage. The effect of these treatments on non-target species is also discussed.","PeriodicalId":143015,"journal":{"name":"Galemys, Spanish Journal of Mammalogy","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130054767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The wild boar (S. scrofa L.) is a generalist feeder that occasionally predates on semi-aquatic and terrestrial molluscs. We document for the first time the massive predation of wild boar on an aquatic epibenthic prey, the endangered freshwater mussel M. margaritifera. During the severe drought of 2009 an important part of the Negro mussel population was found predated by wild boar in a stretch subject to an episodic low level of water. Severe drought and boar predation caused the death of around 40% of the individuals in this metapopulation in the lower reaches of the river, which is the largest population near the southern limit of its global distribution. We propose a survey of the mussel colonies during periods of drought and the translocation of the mussels to deeper areas of the river in order to avoid this endangered mussel being accessible during the summer to the scavenging of wild boar.
{"title":"Depredación ocasional de Sus scrofa L. sobre una metapoblación relíctica de Margaritifera margaritifera L. (Bivalvia: Mollusca) en el río Negro (NO de España)","authors":"J. Morales, E. Peñín, M. Lizana","doi":"10.7325/4","DOIUrl":"https://doi.org/10.7325/4","url":null,"abstract":"The wild boar (S. scrofa L.) is a generalist feeder that occasionally predates on semi-aquatic and terrestrial molluscs. We document for the first time the massive predation of wild boar on an aquatic epibenthic prey, the endangered freshwater mussel M. margaritifera. During the severe drought of 2009 an important part of the Negro mussel population was found predated by wild boar in a stretch subject to an episodic low level of water. Severe drought and boar predation caused the death of around 40% of the individuals in this metapopulation in the lower reaches of the river, which is the largest population near the southern limit of its global distribution. We propose a survey of the mussel colonies during periods of drought and the translocation of the mussels to deeper areas of the river in order to avoid this endangered mussel being accessible during the summer to the scavenging of wild boar.","PeriodicalId":143015,"journal":{"name":"Galemys, Spanish Journal of Mammalogy","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115995748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}