نتایج جستجو برای: amphibians

تعداد نتایج: 7922  

Journal: :Makila: Jurnal Penelitian Ilmu Kehutanan 2023

Amphibians are one of the constituent elements ecosystems that have an essential role as bio-indicators environmental damage. This study aimed to determine amphibians' diversity and identify distribution in carbon footprint reduction location at PT. Nestlé, KPH Batutegi, Tanggamus Regency, Lampung Province. Data was collected using Line Transect Visual Encounter Survey (VES) methods, data were ...

Journal: :Vertebrate Zoology 2022

Amphibians of the Mexican Cloud Forest have a great diversity but are highly threatened. endemisms useful for recognizing biodiversity hotspots; furthermore, interaction historical and current events has generated areas endemism that can be used biological conservation in forest fragments; therefore, their identification is an essential part management planning conservation. Thus, our objective...

Journal: :Frontiers in Ecology and Evolution 2022

Intra-specific aggressive interactions play a prominent role in the life of many animals. While studies have found evidence for repeatability boldness, activity, and exploration amphibians, we know relatively little about consistent among-individual variation aggressiveness, despite its importance male-male competition territoriality. Amphibians, Neotropical poison frogs (Dendrobatidae) particu...

2012
Saúl López-Alcaide Rodrigo Macip-Ríos

During the past decade it has been documented that the average of earth temperature increased 6 °C in a period of 100 years. The higher amount of this phenomenon has been recorded between 1910 and 1945 and, from 1976 to present date (Jones, 1999; Kerr, 1995; Oechel et al., 1994; Thomason, 1995). From 1976 to present the temperature rising has been the faster recorded in the last 10,000 years (J...

Journal: :The Journal of parasitology 2009
Thomas R Raffel Jessica L Sheingold Jason R Rohr

Pesticides can elevate trematode infections in amphibians. However, direct adverse effects of pesticides on embryos and free-living stages of trematodes have not been thoroughly explored, despite the potential for these effects to reduce amphibian trematode infections. We measured the effects of atrazine, glyphosate, carbaryl, and malathion on embryo and miracidium (free-living stage) survival ...

2009
Twan A. A. M. Leenders Gregory J. Watkins-Colwell El Salvador

We report here on recent collections of amphibians and reptiles from El Salvador, in western Central America. More than 600 specimens of amphibians and reptiles were collected on field trips during 2001 and 2002, representing 51 species: one salamander, 11 anurans, 22 lizards, and 17 snakes. One lizard, Mesoscincus managuae (Sauria: Scincidae) is a new national record. Conservation needs and ac...

Journal: :Journal of embryology and experimental morphology 1976
P D Nieuwkoop L A Sutasurya

The markedly different mode of mesoderm formation in anuran and urodelan amphibians (which is related to the early double-layered nature of the anuran blastula wall in contrast to its single-layered nature in the urodeles), but particularly the fundamentally different place and mode of origin of the primordial germ cells in the two groups of amphibians, strongly pleads in favour of a very ancie...

2005
TODD T. GLEESON T. T. GLEESON

The physiological responses of amphibians and reptiles undergoing vigorous exercise are qualitatively similar to those of other vertebrates. Oxygen consumption increases rapidly to rates that are threeto 10-fold the rates at rest. The aerobic response to graded exercise in locomoting reptiles and amphibians is for the most part linear. Oxygen transport by the cardiovascular system during exerci...

Journal: :Journal of Biogeography 2022

Aim Ecological limits on population sizes and the number of species a region can sustain are thought to simultaneously produce spatial patterns in genetic diversity richness due effects random drift operating parallel across community levels. Here, we test extent which resource-based environmental jointly determine these biodiversity amphibians. Location North America. Taxon Amphibians. Methods...

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