South American Journal of Herpetology最新文献

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Cover and Masthead 封面和报头
IF 0.9 4区 生物学
South American Journal of Herpetology Pub Date : 2023-04-10 DOI: 10.2994/sajh-26-00000.1
{"title":"Cover and Masthead","authors":"","doi":"10.2994/sajh-26-00000.1","DOIUrl":"https://doi.org/10.2994/sajh-26-00000.1","url":null,"abstract":"","PeriodicalId":48691,"journal":{"name":"South American Journal of Herpetology","volume":"26 1","pages":"c1 - c2"},"PeriodicalIF":0.9,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45967518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reproductive Strategies in Relation to Maternal Phenotype in a Model Lizard (Salvator merianae) 模式蜥蜴(Salvator meriane)的繁殖策略与母体表型的关系
IF 0.9 4区 生物学
South American Journal of Herpetology Pub Date : 2023-04-10 DOI: 10.2994/SAJH-D-20-00010.1
G. Cardozo, S. Naretto, Cecilia S. Blengini, M. Chiaraviglio
{"title":"Reproductive Strategies in Relation to Maternal Phenotype in a Model Lizard (Salvator merianae)","authors":"G. Cardozo, S. Naretto, Cecilia S. Blengini, M. Chiaraviglio","doi":"10.2994/SAJH-D-20-00010.1","DOIUrl":"https://doi.org/10.2994/SAJH-D-20-00010.1","url":null,"abstract":"Abstract. Reproductive strategies can be characterized according to how often and when females reproduce, how much they invest, and how reproductive investment is distributed. Plasticity can lead to changes in reproductive strategies associated with some age/size classes. Therefore, elucidating associations between maternal morphological traits and reproductive investment over the lifespan will contribute to the understanding of the meaning of female phenotypic variability. Lizards have been an interesting model group for studying reproductive strategies from an ecological and evolutionary perspective in recent decades due to their life-history diversity. The aim of this work was to elucidate variations in the reproductive investment of females according to their multivariate morphology in order to understand if the expression of phenotypic variability is accompanied by variability in reproductive strategies of females in Salvator merianae. We found an annual-biennial pattern of reproduction dependent on female phenotype. Fat storage and follicle development were plastic traits that varied with female body size. Moreover, multiple phenotypic traits other than body length were signs of the reproductive value of a female; tail and abdominal perimeter were related to potential clutch mass and clutch size, respectively. Oviductal traits varied among females of different body length and were determinant of clutch size. Mass of total clutch and individual eggs varied independently of the number of offspring and were inversely related to interlimb length. Therefore, the variability found in the different reproductive traits associated to morphological traits indicates that variability in reproductive strategies is related to multivariate maternal phenotype, although the species does not exhibit discrete phenotypic differences. Resumen. Las estrategias reproductivas pueden ser caracterizadas de acuerdo a: cuán frecuente y cuándo las hembras se reproducen, cuánto invierten y de qué manera su inversión reproductiva es distribuida en las camadas. La plasticidad de los caracteres puede conducir a cambios en las estrategias reproductivas asociados con las clases de tamaño/edad. Por lo tanto, elucidar las asociaciones entre rasgos morfológicos maternos y la inversión reproductiva a lo largo de la vida contribuirá al entendimiento del significado de la variabilidad fenotípica de las hembras. Los lagartos han sido un interesante grupo modelo para el estudio de las estrategias reproductivas en las décadas recientes, tanto desde una perspectiva ecológica como evolutiva, debido a la diversidad de sus historias de vida. El objetivo de este trabajo fue elucidar variaciones en la inversión reproductiva de las hembras de acuerdo a su morfología multivariada para comprender si la expresión de la variabilidad fenotípica está acompañada de variabilidad en las estrategias reproductivas de hembras de Salvator merianae. Nosotros encontramos un patrón de reproducción anual-bi","PeriodicalId":48691,"journal":{"name":"South American Journal of Herpetology","volume":"26 1","pages":"1 - 10"},"PeriodicalIF":0.9,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48684082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Role of Aquatic and Terrestrial Factors in Influencing the Abundance of Adult and Larval Dryophytes plicatus (Hylidae) Along the Arroyo Los Axolotes 水生和陆生因素对阿罗约河流域成虫和幼虫丰度的影响
IF 0.9 4区 生物学
South American Journal of Herpetology Pub Date : 2023-04-10 DOI: 10.2994/SAJH-D-20-00046.1
Wendoline Gómez Franco, Geoffrey R. Smith, J. Lemos‐Espinal
{"title":"The Role of Aquatic and Terrestrial Factors in Influencing the Abundance of Adult and Larval Dryophytes plicatus (Hylidae) Along the Arroyo Los Axolotes","authors":"Wendoline Gómez Franco, Geoffrey R. Smith, J. Lemos‐Espinal","doi":"10.2994/SAJH-D-20-00046.1","DOIUrl":"https://doi.org/10.2994/SAJH-D-20-00046.1","url":null,"abstract":"Abstract. The ridged treefrog, Dryophytes plicatus, is currently categorized as threatened by the Mexican government. Unfortunately, relatively little is known about the ecology or the conservation threats confronting D. plicatus. Here, we examine how aspects of the terrestrial (proportion of visits with evidence of livestock, distance to nearest trees) and aquatic (proportion of visits with water, dissolved oxygen, total dissolved solids, water temperature, stream width, water depth, bank height, water velocity) habitat affects the distribution of D. plicatus along the Arroyo del Axolotes, a stream in the mountains surrounding Mexico City. The distribution of adult D. plicatus was positively related to the proportion of visits during which a study reach had water. The distribution of larval D. plicatus was negatively related to the proportion of visits with evidence of livestock and water velocity, and positively related to stream width. In conclusion, the extent of current anthropogenic impacts on the distribution of D. plicatus along the Arroyo los Axolotes is currently limited; however, the effects of humans on this relatively unspoiled stream is likely to increase.","PeriodicalId":48691,"journal":{"name":"South American Journal of Herpetology","volume":"26 1","pages":"15 - 20"},"PeriodicalIF":0.9,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48428400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Phenotypic and Geographic Variation in Two Co-Distributed Patagonian Lizard Clades (Squamata, Liolaemini) 两种共分布巴塔哥尼亚蜥蜴分支的表型和地理变异(鳞目,Liolaemini)
IF 0.9 4区 生物学
South American Journal of Herpetology Pub Date : 2022-12-31 DOI: 10.2994/SAJH-D-20-00059.1
A. Marín, K. I. Sanchez, Mariana Morando, L. Avila
{"title":"Phenotypic and Geographic Variation in Two Co-Distributed Patagonian Lizard Clades (Squamata, Liolaemini)","authors":"A. Marín, K. I. Sanchez, Mariana Morando, L. Avila","doi":"10.2994/SAJH-D-20-00059.1","DOIUrl":"https://doi.org/10.2994/SAJH-D-20-00059.1","url":null,"abstract":"Abstract. Selective pressures vary throughout the range of a species distribution, thus favoring different phenotypes. Climate gradients in particular exert selection on the ecological and physiological performance of organisms, which often promotes morphological variation. In Patagonia, a region with harsh climatic conditions, the sister genera Phymaturus and Liolaemus include several widely co-distributed clades. One example is the Liolaemus bibronii complex and the Phymaturus patagonicus clade; these lineages differ in both morphological characteristics and life-history strategies. Co-distributed species may be similarly affected by shared environmental variables that predominate in their distributions, including patterns of morphological variation. In this study we identify and compare patterns of morphological variation in relation to geographical distribution. We used body size and head shape of species of the L. bibronii complex and the P. patagonicus clade throughout their distributions in Patagonia, and quantified the relationships between morphological variables with latitude and climatic variables. The results showed co-variation of body size and head shape between latitude and climatic variables in both clades, but these do not follow an evident pattern of morphological variation in co-distributed representatives of sister clades with different life histories and evolutionary characteristics.","PeriodicalId":48691,"journal":{"name":"South American Journal of Herpetology","volume":"25 1","pages":"18 - 27"},"PeriodicalIF":0.9,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42838911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tadpoles select ivermectin-free substrates 蝌蚪选择不含伊维菌素的基质
IF 0.9 4区 生物学
South American Journal of Herpetology Pub Date : 2022-12-31 DOI: 10.2994/SAJH-D-20-00053.1
J. A. López, R. Ghirardi, M. F. Gutierrez, C. Antoniazzi, A. Lifschitz, L. Mesa
{"title":"Tadpoles select ivermectin-free substrates","authors":"J. A. López, R. Ghirardi, M. F. Gutierrez, C. Antoniazzi, A. Lifschitz, L. Mesa","doi":"10.2994/SAJH-D-20-00053.1","DOIUrl":"https://doi.org/10.2994/SAJH-D-20-00053.1","url":null,"abstract":"Abstract. Ivermectin (IVM) is an antiparasitic widely used in veterinary medicine around the world, and cattle injection with IVM is a common practice in wetlands of the Middle Paraná River. Approximately 45% of administered IVM is eliminated in livestock feces. Immediately after injection, cattle enter wetland for feeding and drinking, incorporating feces with IVM into aquatic systems, where it accumulates in the substrate, especially in sediments rich in organic matter. Thus, our objective was to experimentally assess the habitat selection of nektonic (Boana pulchella) and benthic (Physalaemus albonotatus) tadpoles between patches of substrate with and without IVM. The experimental units consisted of quadrangular plastic trays with the bottom divided into four internal quadrants, two filled to 1 cm depth with IVM-free substrate and the other two with substrate containing IVM (nominal IVM concentrations were 3000 ng/g substrate fresh weight), filled to 3 cm depth with water. We placed one tadpole in the center of each tray (B. pulchella: n = 22; P. albonotatus: n = 50) and visually recorded its position (IVM-free or IVM quadrants) every 1 h during the first 10 h, with a final observation at 24 h. The recovery concentration of IVM in the IVM quadrant substrate was 73.95% (percentage of target concentration) and was not detectable in the IVM-free quadrant. The frequency of observations of tadpoles was significantly higher in IVM-free quadrants than in IVM quadrants (B. pulchella: 57%; P. albonotatus: 58%), and this pattern did not differ between nektonic and benthic tadpoles. Thus, tadpoles of both species selected the quadrants free of IVM. The response of tadpoles to IVM merits investigation in a wider spectrum of species and different concentrations to better understand the effects of this emergent pollutant on amphibians. Resumen. La ivermectina (IVM) es un antiparasitario muy utilizado en medicina veterinaria en todo el mundo. Aproximadamente el 45% de la IVM administrada se elimina por las heces del ganado. En los humedales del río Paraná Medio, la inyección de IVM al ganado es una práctica común. Inmediatamente después de la inyección, el ganado ingresa al humedal para alimentarse y beber, incorporando heces con IVM a los sistemas acuáticos, donde se acumula en el sustrato, especialmente en sedimentos ricos en materia orgánica. Bajo este contexto, nuestro objetivo fue evaluar experimentalmente la selección de hábitat de renacuajos nectónicos (Boana pulchella) y bentónicos (Physalaemus albonotatus) entre parches de sustrato con y sin IVM. Las unidades experimentales consistieron en bandejas cuadrangulares de plástico con el fondo dividido en cuatro cuadrantes internos, dos de ellos llenos de 1 cm de profundidad con el sustrato libre de IVM y los otros dos llenos del sustrato con IVM (las concentraciones nominales de IVM fueron 3000 ng/g-1 peso fresco del sustrato) y llenas de agua (3 cm de profundidad). Colocamos un renacuajo en el centro de","PeriodicalId":48691,"journal":{"name":"South American Journal of Herpetology","volume":"25 1","pages":"88 - 93"},"PeriodicalIF":0.9,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47415921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Lizard Assemblage in a Protected Area in the Brazilian Atlantic Forest: Species Composition, Richness, Abundance, and Distribution 巴西大西洋森林保护区的蜥蜴群落:物种组成、丰富度、丰度和分布
IF 0.9 4区 生物学
South American Journal of Herpetology Pub Date : 2022-12-31 DOI: 10.2994/SAJH-D-20-00019.1
J. Pereira‐Ribeiro, Á. Ferreguetti, H. Bergallo, Carlos Frederico D. Rocha
{"title":"Lizard Assemblage in a Protected Area in the Brazilian Atlantic Forest: Species Composition, Richness, Abundance, and Distribution","authors":"J. Pereira‐Ribeiro, Á. Ferreguetti, H. Bergallo, Carlos Frederico D. Rocha","doi":"10.2994/SAJH-D-20-00019.1","DOIUrl":"https://doi.org/10.2994/SAJH-D-20-00019.1","url":null,"abstract":"Abstract. We studied the lizard assemblage from Vale Natural Reserve in Espírito Santo state, southeastern Brazil, and evaluated the species distribution in three vegetation types with different levels of habitat heterogeneity, including dense forest environments and open areas with sandy soil. We conducted field sampling from September 2017 to January 2018 and used 30 standardized transects of 500 m in length, at least 1 km apart between them, distributed in the vegetation: coastal plain forest, sandy soil forest, and natural grassland. Lizards were sampled in the transects using the method of active search, by only one observer on each transect. We recorded 185 lizards, belonging to 16 species from eight families. We conclude that lizard assemblage in the studied area differs in relation to the richness and abundance among the vegetation types, with species being widely distributed in the three environments studied and species being characteristically exclusive to some habitats in the mosaic. In this context, there is a fundamental importance in the conservation of these environments, as impacts in some of the vegetation types can cause a population decline of some species.","PeriodicalId":48691,"journal":{"name":"South American Journal of Herpetology","volume":"25 1","pages":"34 - 40"},"PeriodicalIF":0.9,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42320326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cover and Masthead 盖子和刊头
IF 0.9 4区 生物学
South American Journal of Herpetology Pub Date : 2022-12-31 DOI: 10.2994/sajh-25-00000.1
{"title":"Cover and Masthead","authors":"","doi":"10.2994/sajh-25-00000.1","DOIUrl":"https://doi.org/10.2994/sajh-25-00000.1","url":null,"abstract":"","PeriodicalId":48691,"journal":{"name":"South American Journal of Herpetology","volume":"25 1","pages":"c1 - c2"},"PeriodicalIF":0.9,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43321712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Matching Game: Reassigning the Advertisement Call to Oreobates berdemenos Pereyra et al., 2014 (Anura: Strabomantidae) 匹配游戏:重新分配广告呼叫给Oreobates berdemenos Pereyra等人,2014(无尾目:Strabomantidae)
IF 0.9 4区 生物学
South American Journal of Herpetology Pub Date : 2022-12-31 DOI: 10.2994/SAJH-D-20-00035.1
M. S. Akmentins, M. Boullhesen, Cecilia G. García, J. Martínez
{"title":"The Matching Game: Reassigning the Advertisement Call to Oreobates berdemenos Pereyra et al., 2014 (Anura: Strabomantidae)","authors":"M. S. Akmentins, M. Boullhesen, Cecilia G. García, J. Martínez","doi":"10.2994/SAJH-D-20-00035.1","DOIUrl":"https://doi.org/10.2994/SAJH-D-20-00035.1","url":null,"abstract":"Abstract. The advertisement call plays a fundamental role in species recognition in Oreobates. Despite the relevance of this taxonomic character, the advertisement call has not been described for more than half of the species of these direct-developing frogs. We describe the advertisement call of O. berdemenos from its type locality in Jujuy province, Argentina. We confirm the taxonomic identity of voucher specimens as O. berdemenos through molecular and morphological analyses. The advertisement call of O. berdemenos is a melodious trill composed of 10–16 notes with modulated amplitude and frequency. We compared the advertisement call of O. berdemenos to that of two populations assigned to O. discoidalis from Argentina and Bolivia. On this basis, we conclude that the population from Argentina is O. berdemenos, and we suggest that the taxonomic identity of the Bolivian population should be reviewed. We also describe the aggressive vocalization repertoire of O. berdemenos and compare territorial and encounter calls with the vocal repertoire previously assigned to O. discoidalis. With the present work, the advertisement calls and vocal repertoires of two of the three Oreobates species of Argentina have been described. Resumen. El canto de anuncio juega un rol preponderante para el reconocimiento de las especies del género Oreobates. A pesar de la relevancia de este caracter taxonómico, más de la mitad de estas ranas de desarrollo directo carecen de la descripción de sus cantos. En este trabajo describimos el canto de anuncio de O. berdemenos en su localidad tipo en la provincia de Jujuy, Argentina. Mediante análisis molecular y morfológico confirmamos la identidad taxonómica de los ejemplares de referencia como O. berdemenos. El canto de anuncio de O. berdemenos es un trino melodioso compuesto por 10–16 notas con amplitud y frecuencia moduladas. Comparamos el canto de anuncio de O. berdemenos con la descripción de los cantos asignados a la especie O. discoidalis en dos poblaciones de Argentina y Bolivia. Concluimos que el canto de Argentina pertenece a O. berdemenos y sugerimos que la identidad taxonómica de la población registrada en Bolivia debe ser revisada. Además, describimos el repertorio de vocalizaciones agresivas de O. berdemenos y comparamos los cantos territorial y agresivo con los previamente descritos para O. discoidalis. Con el presente trabajo, dos de las tres especies de Oreobates de Argentina cuentan con una descripción formal de sus cantos de anuncio y sus repertorios vocales.","PeriodicalId":48691,"journal":{"name":"South American Journal of Herpetology","volume":"25 1","pages":"28 - 33"},"PeriodicalIF":0.9,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45384952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Growth Pattern of Farmed Morelet's Crocodiles (Crocodylus moreletii) from Hatchlings to Juveniles 养殖大鳄从幼鳄到幼鳄的生长模式
IF 0.9 4区 生物学
South American Journal of Herpetology Pub Date : 2022-12-31 DOI: 10.2994/SAJH-D-20-00044.1
S. Viveros-Peredo, C. Ahuja-Aguirre, Lorena López-deBuen, Belisario Domínguez-Mancera
{"title":"Growth Pattern of Farmed Morelet's Crocodiles (Crocodylus moreletii) from Hatchlings to Juveniles","authors":"S. Viveros-Peredo, C. Ahuja-Aguirre, Lorena López-deBuen, Belisario Domínguez-Mancera","doi":"10.2994/SAJH-D-20-00044.1","DOIUrl":"https://doi.org/10.2994/SAJH-D-20-00044.1","url":null,"abstract":"Abstract. The objective of this study was to determine the growth pattern of farmed Crocodylus moreletii individuals from hatchling to juvenile. A total of 3,743 crocodiles (3,098 males and 645 females) were included. Crocodiles hatched from artificially incubated eggs. Individuals were classified into three age categories: (1) neonate (0–4 months), (2) developing (4–12 months), and (3) juvenile (12–27 months). Seven biometric evaluations were conducted. The first one was at 4 d after hatching, and the following evaluations were at 4, 8, 12, 17, 22, and 27 months of age. In each evaluation, the total length, weight, and sex of each individual were registered. Crocodiles were subsequently classified into three growth groups: (1) fast: length and weight greater than 1 SD from the mean, (2) average: length and weight within 1 SD from the mean, and (3) slow: length and weight lower than 1 SD from the mean. Linear polynomial (LPN), quadratic polynomial (QPN), and three-parameter sigmoidal (SIG3) models were used to evaluate length and weight as a function of age to describe growth. For length and weight, SIG3 and QPN, respectively, produced the highest R2 in all growth groups and the general population. LPN did not fit the weight data. The models that best fitted length and weight in relation to age were SIG3 and QPN, so both could be used to evaluate the growth pattern in other populations of farmed young Crocodylus moreletii. Resumen. El estudio determinó el patrón de crecimiento de individuos de Crocodylus moreletii criados en granja desde neonatos hasta juveniles. Se incluyeron 3743 cocodrilos (3098 machos y 645 hembras) que eclosionaron de huevos incubados artificialmente. Los animales se clasificaron en tres categorías de edad: (1) Neonatos (0–4 meses), (2) en desarrollo (4–12 meses), y (3) juveniles (12–27 meses). Los neonatos incluyeron recién eclosionados (0–4 días) y de 4 días a 4 meses. La temperatura ambiente a la que se mantuvieron fue 32.8 ± 0.2°C recién eclosionados, 31.8 ± 2.3°C neonatos y 31.5 ± 3.1°C en desarrollo y juveniles. La dieta de los animales se basó en hígado de pollo picado y harina de pescado adicionados con vitaminas A, D3, E, B12, B3 y calcio y estuvo disponible ad libitum. Los neonatos y en desarrollo se alimentaron diario y los juveniles seis veces por semana. Se hicieron siete evaluaciones biométricas en todos los animales. La primera fue 4 días después de eclosionar y las siguientes a los 4, 8, 12, 17, 22 y 27 meses de edad. En cada evaluación se registró longitud total, peso y sexo de cada individuo. Se usó estadística descriptiva para determinar la media ± DE de longitud y peso para hembras y machos en cada evaluación. Los cocodrilos se clasificaron en tres grupos de crecimiento: (1) Rápido: longitud y peso mayor de 1 SD de la media; (2) promedio: longitud y peso dentro de 1 SD de la media; (3) lento: longitud y peso menor de 1 SD de la media. Se usó un modelo polinomial lineal (LPN), polinomial cuadrático (QPN) y","PeriodicalId":48691,"journal":{"name":"South American Journal of Herpetology","volume":"25 1","pages":"76 - 87"},"PeriodicalIF":0.9,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47793898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Potential Habitat of the American Crocodile (Crocodylus acutus: Reptilia: Crocodilidae) and Identification of Areas of Interaction with Humans in Costa Rica 哥斯达黎加美洲鳄(Crocodylus acutus:爬行纲:鳄鱼科)的潜在栖息地及与人类互动区域的鉴定
IF 0.9 4区 生物学
South American Journal of Herpetology Pub Date : 2022-12-31 DOI: 10.2994/SAJH-D-21-00037.1
Iván Sandoval Hernández, Mahmood Sasa Marín, J. S. Monrós González, J. R. Bolaños Montero, Juan Sánchez Ramírez
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