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Morphological variation and new distributional records of Rhadinella dysmica (Serpentes: Dipsadidae), with comparisons with other dark-colored congeners 大鲵形态变异及分布新记录(蛇纲:大鲵科),并与其他深色同系物的比较
IF 0.4 4区 生物学 Q4 ZOOLOGY Pub Date : 2021-12-21 DOI: 10.11606/issn.2316-9079.v20i2p151-159
Ricardo Palacios-Aguilar, Rufino Santos-Bibiano, Jonathan A. Campbell, Elizabeth Beltrán-Sánchez
Small, secretive snakes comprise an important part of the herpetofauna of the Neotropics and yet most species are known from a handful of specimens due to their habits and relatively inaccessible localities. The Mexican endemic Rhadinella dysmica is the westernmost species of the genus and was described based on a single adult female. Herein we provide information on new specimens, including their morphological variation and hemipenial structure, expand the known geographic range for the species, and comment on the morphological similarities of the “dark-colored” species of the genus.
小型、隐秘的蛇是新热带地区疱疹动物群的重要组成部分,但由于它们的习性和相对难以接近的地方,大多数物种都是从少数标本中已知的。墨西哥特有的变形Rhadiella dymica是该属最西部的物种,以一只成年雌性为原型进行了描述。在此,我们提供了新标本的信息,包括它们的形态变异和半阴茎结构,扩大了该物种的已知地理范围,并对该属“深色”物种的形态相似性进行了评论。
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引用次数: 0
Turtles of the World: Annotated Checklist and Atlas of Taxonomy, Synonymy, Distribution, and Conservation Status 世界海龟:分类、同义、分布和保护状况注释清单和地图集
IF 0.4 4区 生物学 Q4 ZOOLOGY Pub Date : 2021-12-21 DOI: 10.11606/issn.2316-9079.v20i2p225-228
S. Thomson
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引用次数: 128
First record of necrophilia in Smilisca baudinii (Anura: Hylidae) from Mexico 墨西哥山蚤(无尾目:海蚤科)中首次记录的恋尸癖
IF 0.4 4区 生物学 Q4 ZOOLOGY Pub Date : 2021-12-21 DOI: 10.11606/issn.2316-9079.v20i2p215-217
Rafael Peralta-Hernández, Andrés Perea-Pérez
Necrophilia, also known as necrogamy (Bettaso et al. 2008), thanatophilia (Patel et al. 2016), and Davian behavior (Dickerman 1960), is a form of reproductive behavior in which a living specimen (usually a male) attempts to cop ate it a dead conspecific s a a female). It has been reported in all major extant groups of tetrapods (Caldeira-Costa et al. 2010). Among anurans it has been reported in at least 37 species from six families: Ascaphidae (one species), Bombinatoridae (1), Bufonidae (15), Hylidae (8), Leptodactylidae (1), and Ranidae (11). This list suggests that this behavior occurs more often in frogs with explosive reproduction (see Pintanel et al. 2021 and Costa-Campos et al. 2021 for recent reviews). Necrophilia generally does not result in successful reproduction and may represent a waste of time and energy for the males (reviewed in Marco and Lizana 2002). However, the case of Rhinella proboscidea (Spix, 1824), in which the male can promote the expulsion and fertilization of the oocytes from dead females by compressing their abdominal cavities with his arms, was hypothesized as “functional necrophilia” because it could minimize the losses of both sexes during the explosive reproduction events and favors the strongest and most persistent males (Izzo et al. 2012). ere e provide t e first report of necrop i ia in the common Mexican tree frog Smilisca baudinii (Duméril and Bibron, 1841). This hylid reaches a snout–vent length of 76 mm in males and mm in fema es as a ide and at ead indistinct from the body, and is distinguished from other species by having a row of warts along the lower part of the arm (Lee 2000, Tunstall 2021). Its wide geographic range encompasses several biogeographic provinces, ranging from the extreme southcentral United States to southeastern and southwestern Costa Rica (Lee 2000, Savage 2002, Powell et al. Received 09 June 2021
恋尸癖,也被称为necrogamy (Bettaso et al. 2008)、thanatophilia (Patel et al. 2016)和Davian behavior (Dickerman 1960),是一种生殖行为形式,其中活的标本(通常是雄性)试图吃掉它死去的同种(如雌性)。在所有现存的主要四足动物群体中都有报道(Caldeira-Costa et al. 2010)。在无尾目动物中,至少有37种被报道,分属6科:蛛科(1种)、弹蝇科(1种)、蟾科(15种)、水螅科(8种)、细趾蛛科(1种)和蛙科(11种)。该列表表明,这种行为在爆炸性繁殖的青蛙中更常见(参见Pintanel et al. 2021和Costa-Campos et al. 2021的最新评论)。恋尸癖通常不会导致成功的繁殖,而且可能会浪费雄性的时间和精力(Marco and Lizana 2002)。然而,在长鼻鼻虫(Spix, 1824)的案例中,雄性可以通过用手臂压迫雌性的腹腔来促进雌性死亡卵母细胞的排出和受精,这被假设为“功能性恋尸症”,因为它可以在爆炸性繁殖事件中最大限度地减少两性的损失,并有利于最强壮和最持久的雄性(Izzo et al. 2012)。在此,我们首次报道了墨西哥普通树蛙Smilisca baudinii的坏死性坏死(dumsamril and Bibron, 1841)。这种水螅体长为76毫米,雄性为76毫米,雌性为76毫米,头部与身体不明显,与其他物种的区别在于手臂下部有一排疣(Lee 2000, Tunstall 2021)。其广泛的地理范围包括几个生物地理省份,从美国的中南部到哥斯达黎加的东南部和西南部(Lee 2000, Savage 2002, Powell等)。收到2021年6月9日
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引用次数: 1
High prevalence of anomalies in Nyctimantis brunoi (Anura: Hylidae) from a restinga protected area in southeastern Brazil 布鲁诺伊夜蛾异常的高患病率(Anura: Hylidae)来自巴西东南部的restinga保护区
IF 0.4 4区 生物学 Q4 ZOOLOGY Pub Date : 2021-12-21 DOI: 10.11606/issn.2316-9079.v20i2p165-179
L. F. Carmo, Suellen de Oliveira Guimarães, Ingrid R. Miguel, Pedro H. Pinna, Daniel S. Fernandes, Manoela Woitovicz-Cardoso
In the present study we monitored a population of Nyctimantis brunoi, a species commonly found in restingas of southeastern Brazil. Field activities were carried out in the Parque Nacional da Restinga de Jurubatiba (PNRJ), a protected area located in the northern portion of the state of Rio de Janeiro. Specimens were sampled through a complete species inventory. We analyzed 218 individuals, 32 (14.7%) of which have anomalies. Additionally, a subsample of 15 specimens were radiographed to verify the occurrence of skeletal anomalies not externally detectable and to verify if the classification of anomalies attributed by means of external examination are detectable in the osteological structure of the specimen. There are 12 types of anomalies recognized in this population, three of them only detectable through internal investigation (radiography). We verified that most of anomalies externally detectable were correctly classified when compared to the osteological morphology of the radiographed specimens. Thus, in this investigation, the study of external malformations was capable to detect 60% of the types of anomalies. We conclude that further ecotoxicological and epidemiological studies of the population of N. brunoi in the PNRJ are necessary to establish the origins of anomalies in this species.
在本研究中,我们监测了一种常见于巴西东南部雷丁加斯的布氏夜蛾种群。实地活动在位于里约热内卢州北部的保护区国家公园(PNRJ)进行。标本是通过完整的物种清单取样的。我们分析了218人,其中32人(14.7%)有异常。此外,对15个样本的子样本进行了射线照相,以验证外部无法检测到的骨骼异常的发生,并验证通过外部检查确定的异常分类是否可在样本的骨骼结构中检测到。该人群中识别出12种类型的异常,其中三种只能通过内部调查(射线照相)检测到。我们证实,与射线照相标本的骨形态相比,大多数外部可检测的异常都是正确分类的。因此,在本次调查中,对外部畸形的研究能够检测出60%的异常类型。我们的结论是,有必要对PNRJ的布鲁诺伊猪笼草种群进行进一步的生态毒理学和流行病学研究,以确定该物种异常的起源。
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引用次数: 0
Novel breeding habitat, oviposition microhabitat, and parental care in Bokermannohyla caramaschii (Anura: Hylidae) in southeastern Brazil 巴西东南部caramaschi Bokermannohyla(无尾目:Hylidae)的新繁殖生境、产卵微生境和亲代照料
IF 0.4 4区 生物学 Q4 ZOOLOGY Pub Date : 2021-12-21 DOI: 10.11606/issn.2316-9079.v20i2p219-223
Juliana Alves, A. Mônico, T. SILVA-SOARES, Rodrigo B. Ferreira
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引用次数: 0
Comparative vulnerability of Indosylvirana temporalis and Clinotarsus curtipes (Anura: Ranidae) tadpoles to water scorpions: importance of refugia and swimming speed in predator avoidance Indosylvirana temporalis和Clinotarsus curtipes的比较脆弱性(Anura: 蛙科)蝌蚪到水蝎子: 避难所和游泳速度在捕食者回避中的重要性
IF 0.4 4区 生物学 Q4 ZOOLOGY Pub Date : 2021-12-21 DOI: 10.11606/issn.2316-9079.v20i2p159-164
Santosh M. Mogali, B. A. Shanbhag, S. K. Saidapur
The comparative vulnerability of two co-existing tadpole species (Indosylvirana temporalis and Clinotarsus curtipes) to their common predator, water scorpions (Laccotrephes sp.; Hemiptera: Nepidae), and the importance of refugia in predator avoidance were studied in the laboratory. In a total of 60 experimental trials, 10 tadpoles each of I. temporalis and C. curtipes of comparable body sizes were exposed to water scorpions (starved for 48 h). Thirty trials included refugia while 30 did not. The results of this study showed that in both the absence and the presence of refugia C. curtipes tadpoles fell prey to water scorpions more frequently than I. temporalis tadpoles. A main difference between the two species is the speed of swimming; Vmax of C. curtipes (24.73 cm/s) tadpoles is lower than that of I. temporalis (30.78 cm/s) tadpoles. This is likely to be the reason why more C. curtipes tadpoles were preyed upon than were I. temporalis tadpoles. Predation risk of tadpoles of both species was affected significantly by the presence of refuge sites. The vulnerability of both tadpole species was lower where refuge sites were available. The present study clearly shows that I. temporalis tadpoles avoid predation by water scorpions more effectively than do C. curtipes tadpoles.
两种共存的蝌蚪物种(Indosylvirana temporalis和Clinotarsus curtipes)对其常见捕食者水蝎(Laccotrephes sp.;半翅目: Nepidae),以及避难所在躲避捕食者中的重要性。在总共60项实验试验中,将体型相当的I.temporalis和C.curtipes各10只蝌蚪暴露于水蝎(饥饿48小时)。30项试验包括避难所,30项没有。这项研究的结果表明,在没有避难所和有避难所的情况下,C.curtipes蝌蚪比I.temporalis蝌蚪更频繁地成为水蝎的猎物。这两个物种之间的主要区别在于游泳的速度;C.curtipes蝌蚪的Vmax(24.73 cm/s)低于I.temporalis蝌蚪(30.78 cm/s)。这可能就是为什么被捕食的C.curtipes蝌蚪比I.temporalis蝌蚪多的原因。这两个物种的蝌蚪的捕食风险都受到避难场所的显著影响。在有避难所的地方,这两种蝌蚪的脆弱性都较低。目前的研究清楚地表明,I.temporalis蝌蚪比C.curtipes蝌蚪更有效地避免了水蝎的捕食。
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引用次数: 2
Limb abnormalities in Peltophryne florentinoi (Anura: Bufonidae) from Cuba Peltophryne florentinoi的肢体异常(Anura: Bufonidae)
IF 0.4 4区 生物学 Q4 ZOOLOGY Pub Date : 2021-06-30 DOI: 10.11606/issn.2316-9079.v20i1p117-123
R. Bosch, A. H. Marrero, Juan L. Leal Echevarría, Idalia Herrera Estrada, Leoncio Gómez Castillo, Adrián David Trapero Quintana
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引用次数: 1
Sexual dimorphism in the South American water snake Helicops polylepis (Serpentes: Dipsadidae) 南美水蛇的两性二态性(蛇纲:水蛇科)
IF 0.4 4区 生物学 Q4 ZOOLOGY Pub Date : 2021-06-22 DOI: 10.11606/issn.2316-9079.v20i1p15-25
Isla Carol Marialva Camargo, Jackeline Cristina Palma Veras, Síria Ribeiro, R. Kawashita-Ribeiro, R. Fraga, Alfredo P. Santos-Jr Júnior
Sexual selection, fecundity selection and ecological divergence have been the main explanations proposed for the origin and maintenance of sexual dimorphism. In this study we provide evidence of sexual dimorphism in the South American aquatic snake Helicops polylepis, which is mainly determined by body and head sizes. Males have longer tails and more subcaudal scales, and females have larger body and head and more ventral scales. The sexual dimorphism observed in different morphological characters of H. polylepis occurs in other species of xenodontine snakes and is interpreted as a consequence of sexual selection pressures. Data on growth rates associated with prey availability and female size-related offspring size are necessary to refine our analyzes and test specific hypotheses about the ecological and evolutionary bases of sexual dimorphism in H. polylepis.
性选择、繁殖力选择和生态分化是两性二态现象产生和维持的主要解释。在这项研究中,我们提供了南美水生蛇Helicops polylepis性别二态性的证据,这主要是由身体和头部大小决定的。雄性有较长的尾巴和更多的尾下鳞片,雌性有较大的身体和头部和更多的腹部鳞片。在不同形态特征中观察到的雌雄二形现象在其他种类的异齿蛇中也存在,这被解释为性选择压力的结果。与猎物可得性相关的生长率和与雌性体型相关的后代体型的数据对于完善我们的分析和检验关于雌雄二型性的生态和进化基础的特定假设是必要的。
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引用次数: 0
Richard Carl Vogt (1949–2021)
IF 0.4 4区 生物学 Q4 ZOOLOGY Pub Date : 2021-06-22 DOI: 10.11606/issn.2316-9079.v20i1p125-129
W. Magnusson
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引用次数: 0
Novel cave habitat used by the cryptic lizard Pinoyscincus abdictus abdictus (Squamata: Scincidae) on Dinagat Islands, Philippines 菲律宾迪纳加群岛上隐蜥蜴Pinoyscincus abdictus abdictus(鳞目:隐蜥蜴科)的新洞穴栖息地
IF 0.4 4区 生物学 Q4 ZOOLOGY Pub Date : 2021-06-22 DOI: 10.11606/issn.2316-9079.v20i1p99-104
E. P. Maglangit, Jason Jon Joshua B. Paraguya, Rae Mar T. Maglangit, O. Nuñeza, M. L. Diesmos, A. Diesmos
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引用次数: 0
期刊
Phyllomedusa
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