scholarly journals Density and diet of invasive alien anuran species in a disturbed landscape: A case in the University of the Philippines Mindanao, Davao City, Philippines

2019 ◽  
Vol 20 (9) ◽  
Author(s):  
Kublai Januar Jabon ◽  
Lief Erikson Gamalo ◽  
Mae Responte ◽  
Reynaldo Abad ◽  
Glenn Dale Gementiza ◽  
...  

Abstract. Jabon KJD, Gamalo LED, Responte MA, Abad RG, Gementiza GDC, Achondo MJMM. 2019. Density and diet of invasive alien anuran species in a disturbed landscape: A case in the University of the Philippines Mindanao, Davao City, Philippines. Biodiversitas 20: 2554-2560. The population density and diet composition of three invasive alien anuran species (IAS) (Kaloula pulchra, Hoplobatrachus rugulosus, and Rhinella marina), recorded from a disturbed landscape in the University of the Philippines Mindanao campus, were determined in this study. With the total area of 18 km2 covered, R. marina (3.89 ind/km2) showed to have the highest density followed by K. pulchra (0.83 ind/km2) then H. rugulosus (0.056 ind/km2). Furthermore, 20 samples of R. marina and 10 samples of K. pulchra were used for gut analysis in which all have stomach contents. Thirteen prey orders were identified in both species with different degrees of prey digestion. The Frequency of Occurrence (FOO) showed orders Spirobolida, Coleoptera, and Hymenoptera were constantly occurring in R. marina while only Hymenoptera for K. pulchra. On the other hand, Degree of Food Preference showed similarities with Hymenoptera as the most preferred prey in both species, especially for K. pulchra (2.8) as compared to R. marina (1.8). Accidental occurrence and occasionally preferred food items such as organic and inorganic matter were also present in both species. A notable record of a skink (Reptilia, Scincidae) as prey item was found in R. marina, indicative of its generalist and carnivorous diet and its potential impact on the native vertebrate fauna in the area. This study proposes that the occurrence of IAS with regards to their high density and variable prey preferences can be a factor disturbing biological diversity in an altered landscape.

2015 ◽  
Vol 17 (1) ◽  
pp. 216 ◽  
Author(s):  
B. ZORICA ◽  
V. ČIKES KEČ ◽  
O. VIDJAK ◽  
I. MLADINEO ◽  
D. EZGETA BALIČ

We examined the stomach contents of two of the most economically and ecologically important small pelagic fish species, the sardine, Sardina pilchardus and the anchovy, Engraulis encrasicolus, obtained monthly from commercial purse-seine catches operating on Croatian fishing grounds during a one-year period (January–December, 2011). Both species generally showed a similar diet, with copepod and decapod larvae as dominant prey groups. The composition of anchovy and sardine stomach contents was not size- or sex-related, but throughout the year, a significant difference in diet composition was observed for each species as well as between species. Two gastrointerstinal helminths; the digenean Parahemiurus merus and nematode Hysterothylacium aduncum, were recorded during the stomach content analysis. Differences in population dynamics between the two parasites are congruent with differences in the prey composition of sardine and anchovy, reflecting fine-tuned interactions in the trophic web between parasites and intermediate or paratenic hosts included in the sardine and anchovy diet.


2018 ◽  
Vol 10 (10) ◽  
pp. 12382-12388 ◽  
Author(s):  
Syed Asrafuzzaman ◽  
Susmita Mahapatra ◽  
Jasmin Rout ◽  
Gunanidhi Sahoo

Anuran tadpoles are gregarious predators capable of differentiating food items among diverse types of prey via varied feeding and oral structures.  Tadpoles were collected from different study sites in three districts of northern Odisha during three consecutive rainy seasons (from July–October of 2015–2017).  After morphometric measurements (total length and body length), the stomach contents of 75 tadpoles belonging to five different anuran species (Duttaphrynus melanostictus, Euphlyctis cyanophlyctis, Fejervarya orissaensis, Polypedates maculatus and Microhyla ornata) belonging to four families namely Bufonidae, Dicroglossidae, Rhacophoridae and Microhylidae were examined.  The food spectrum of tadpoles included mostly detritus, followed by phytoplankton (represented by 5 classes and 54 genera).  Such studies contribute to the understanding of the natural diets of these anuran species that can assist in developing management strategies for them.  Aquatic habitats must be conserved and maintained so that conservation of anurans can be ensured.


2021 ◽  
Vol 879 (1) ◽  
pp. 012014
Author(s):  
F C Sanchez ◽  
Jr.M C Ilang-Ilang ◽  
M C E Balladares ◽  
B V Apacionado ◽  
R R P Tayobong ◽  
...  

Abstract The sustainability of the food supply seems to be a never-ending concern of many households in the Philippines. This concern is most especially felt in this time of pandemic wherein many Filipinos are struggling on where to get their food to feed their families. The adoption of edible landscaping has become more in demand because of the current situation caused by the pandemic. As such, having a sustainable edible garden is very much recommended because it can provide the household a “garden to table” food which can help in making the household food self-sufficient. There is a current need to promote edible landscaping technology primarily through trainings and seminars and it should be intensified to inform and educate the people on food self-sufficiency amidst the COVID-19 pandemic. Edible landscaping (EL) as an approach that merges the science of crop production and the art of landscaping, is continuously being promoted using different strategies and one of which is the conduct of trainings and seminars all over the Philippines. This study assessed the different ways by which the Edible Landscaping Team of the University of the Philippines Los Banos delivered promotional activities such as webinars and e-training amidst the context of the COVID-19 pandemic. This research was conducted using the qualitative approach, specific case studies, and the data gathered were analyzed using thematic analysis. More than 39,000 individuals in the Philippines have already been reached and educated on the technology through the conduct of e-trainings and webinars. The presentations and lectures on edible landscaping were modified based on the needs of the requesting institution and were discussed using a combination of English and Filipino languages. The duration of the eight webinars ranged from a minimum of 30 minutes to a maximum of almost 5 hours (in discussion is written ‘almost 4 hours). Based on the comments, most of the online viewers gave affirmative responses.


2021 ◽  
Vol 61 ◽  
pp. e20216176
Author(s):  
Marcos Jorge Matias Dubeux ◽  
Filipe Augusto Cavalcanti do Nascimento ◽  
Ubiratan Gonçalves ◽  
Tamí Mott

The identification of anuran amphibians is still a challenge in megadiverse assemblages. In the Neotropics, the Atlantic Forest harbors more than 600 anuran species, and many studies in this ecoregion report anuran assemblages surpassing 30 species. Taxonomic keys facilitate the identification of biological diversity, however only a few are available for anuran assemblages in the Atlantic Forest. Herein we present an identification key for 40 anuran species distributed across 20 genera and nine families, occurring in the Environmental Protection Area of Catolé and Fernão Velho, northeastern Atlantic Forest. Thirty-five morphological characteristics were used in the key, all of which can be easily observed in living and museum specimens. This pioneer study provides the first identification key for an amphibian assemblage in the northeastern Atlantic Forest and this baseline information acts as the starting point for the development of evolutionary and ecological research in this conservation unit.


2021 ◽  
Vol 11 (10) ◽  
pp. 474-489
Author(s):  
Rowena Nery Monte ◽  
Aivi Reyes Buan

The remote learning setup engendered numerous disadvantages to both learner and educator. Mental health, accessibility affected by one’s socioeconomic classification, availability of technological apparatuses, and lack of social integration are some of the reported disadvantages caused by remote learning. The effects are far more notable in subjects that demand physical activities given that several prerequisites must be accessible to the learner for him/her to successfully participate. To specifically assess the impact of this new normal in physical education, a specific course offering in University of the Philippines Los Baños (UPLB), Human Kinetics 12: Walking for Fitness, is examined through a quantitative study involving students who were enrolled. Surveys and other statistical tools are utilized to yield accurate data about the impact of mobility-restrictive measures to the perception and performance of the students. The findings of this study revealed what they feel about the quarantines and lockdowns have a negative effect to their perception and performance in HK12: Walking for Fitness. Besides the fact that the policies are meant to restrict mobility and that HK12: Walking for Fitness requires mobility, it must also be considered that the First Semester, A.Y. 2020-2021 is the first semester of the university to observe remote learning. Even though the study did not capture such behavior, it must be noted that the drastic shift to online classes made it difficult to students to cope with the new normal in education.


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