Volume 11 (2017)

Table of Contents

Comparative Pollen Viability and Pollen Tube Growth of two Endemic Philippine Etlingera (Zingiberaceae, Alpinioideae)

Primary Research Paper (Taxonomy and Systematics)

Date Posted (Final Published Version) : May 2, 2018

by Noe P. Mendez, Heidi C. Porquis, Evangeline B. Sinamban and Florfe M. Acma

Abstract

The pollen viability and pollen tube growth of Etlingera dalican and Etlingera philippinensis (Zingiberaceae) were examined from fresh samples under the light microscope (LM) and scanning electron microscope (SEM). Pollen measurements were 68-75μm (E. dalican) and 60-65μm (E. philippinensis), having spheroidal shape for hydrated pollen and irregularly-shape for dry pollen for both species. E. dalican pollen has greenish-yellow color while that of E. philippinensis is greenish. Both species had inaperturate pollen but differ in their ornamentation which is gemmate in E. dalican while psilate in E. philippinensis. E. dalican has 88.56% pollen viability while E. philippinensis has only 40.69%. The rate of pollen tube growth was faster (17.75 μm per day) in E. dalican than E. philippinensis (8.17 μm per day). The possible pollinators observed for the two species were butterflies of the genus Catopsilia, ants and flies. Additional information on the inflorescence and flower description of the two species are herein presented.

KEYWORDS: Etlingera dalican, Etlingera philippinensis, pollen germination, pollen morphology, Zingiberaceae.

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First Record of the Gillspot Cardinal fish, Neamia notula (Apogonidae) From the Philippines

Short Communication (Taxonomy and Systematics)

Date Posted (Final Published Version) : May 2, 2018

by Tomohiro Yoshida and Hiroyuki Motomura

ABSTRACT

A single Philippines specimen (28.3 mm standard length) of Neamia notula Fraser & Allen, 2001 (Apogonidae), previously recorded from Mauritius, Indonesia, and Japan, was recently discovered in the Smithsonian Museum (USA) collection. The specimen, described herein, constitutes the first record of the species from the Philippines and supports the view that N. notula is widely distributed in the Indo-West Pacific.

KEYWORDS: distribution, fish fauna, new record, taxonomy, morphology

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Nepenthes alfredoi (Caryophyllales, Nepenthaceae), A New Species of Pitcher Plant from Mindanao, Philippines

Primary Research Paper (Taxonomy and Systematics)

Date Posted (Final Published Version) : May 2, 2018

by Victor B. Amoroso, Noel E. Lagunday, Fulgent P. Coritico, and Ruel D. Colong

Abstract

The Philippines having the highest rates of endemism of this family is considered a center of diversity of the genus Nepenthes along with Sumatra and Borneo. Recent explorations in Mindanao and Luzon has raised the Philippine number of Nepenthes species to 52. This study reports the discovery of a new Nepenthes species from Mt. Hamiguitan. It is distinguished in having ground and upper pitchers with fringed wings on the tendril. The new species described herein was only observed at Gov. Generoso and has not been recorded elsewhere in the Philippines. Known only from the type locality and it faces severe threat from habitat destruction.

KEYWORDS: Carnivorous pitcher plants, Nepenthes, Mt. Haminguitan Wildlfe Sanctuary, Mindanao, Philippines

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First Record of the anchovy Stolephorus teguhi (Engraulidae) from the Philippines

Short Communication (Taxonomy and Systematics)

Date Posted (Final Published Version) : May 2, 2018

by Harutaka Hata and Hiroyuki Motomura

ABSTRACT

A single Philippines specimen (59.7 mm standard length) of Stolephorus teguhi Kimura, Hori & Allen, 2009 (Engraulidae), previously recorded only from North Sulawesi, Indonesia, was recently discovered in the fish collection of the National Museum of Natural History, Smithsonian Institution, USA. A full description is given of the specimen, which constitutes the first record of the species from the Philippines and supports the view that S. teguhi is widely distributed in the Celebes Sea to the eastern part of the South China Sea.

KEYWORDS: distribution, fish fauna, new record, taxonomy, morphology

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Morphotaxonomy and Diversity of Terrestrial Microalgae and Cyanobacteria in Biological Crusts of Soil from Paddy Fields of Los Baños, Laguna (Philippines)

Primary Research Paper (Taxonomy and Systematics)

Date Posted (Final Published Version) : May 2, 2018

by Eldrin DLR. Arguelles and Rosario G. Monsalud

ABSTRACT

Floristic and taxonomic study on the basis of morphological and cytological characteristics of terrestrial algae found in biological crusts of soil from paddy fields of Los Baños, Laguna showed the occurrence of 14 taxa (3 unicellular, 2 colonial, 7 non-heterocytous filamentous and 2 heterocytous filamentous) belonging to the class Cyanophyceae, Chlorophyceae, Klebsormidiophyceae and Trebouxiophyceae. The collection reported in this study represents 9 orders, 10 families, 13 genera and 14 species based on recent combined taxonomical approach. Of these taxa, the occurrence of a rare green alga Chlorolobion braunii (Nägeli) Komárek is reported for the first time in the Philippines. Three species are also reported here based on current taxonomic nomenclature and these are Planktothrix agardhii (Gomont) Anagnostidis & Komárek, Kamptonema chlorinum (Kützing ex Gomont) Strunecký, Komárek & J.Smarda and Tetradesmus dimorphus (Turpin) M.J. Wynne. These taxonomic records are considered important information in enriching the knowledge about the diversity and habitat distribution of cyanobacteria and microalgae in the Philippines.

KEYWORDS: Algae, diversity, new record, taxonomy, rice fields, soil habitat

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Rediscovery and lectotypification of the Philippine endemic Hornstedtia microcheila Ridl. (Zingiberaceae) including an amendment to its description

Primary Research Paper (Taxonomy and Systematics)

Date Posted (Final Published Version) : May 2, 2018

by Mark Arcebal K. Naive

ABSTRACT

Hornstedtia microcheila Ridl. (Zingiberaceae; Alpinioidieae; Alpinieae) is a poorly-known endemic species in the Philippines. It has not been collected again since its description in 1909. In 2017, however, the species was rediscovered in the Mt. Mandalagan Range, Patag, Silay City, Negros Occidental, after a lapse of over a century. A new, amended and extended description of H. microcheila based on this new collection is presented herein. Typification, colour photographs, distribution data, ecological details as well as a taxonomic key to the different Hornstedtia species in the Philippines are also provided.

KEYWORDS: Alpinieae, Hornstedtia, lectotype, Negros Occidental, Philippines, rediscovery

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The Pteridophytes of Adams, Northern Luzon, Philippines and their Ecosystem Services

Primary Research Paper (Taxonomy and Systematics)

by Liezel M. Magtoto and Celia M. Austria

ABSTRACT

The Philippines has approximately 1,100 species of lycophytes and ferns, and this represents approximately 9% of the worldwide fern flora. Botanical explorations and local documentations continue to expand the list. Local documentations increase our knowledge on species distribution and conservation status, which are essential in biodiversity conservation. This paper reports on a survey of the pteridophytes of Adams, Ilocos Norte, one of the remaining floristic sites in Luzon Island, Philippines. A series of floristic surveys conducted at selected sites in Adams recorded and vouchered 47 species, 34 genera and 21 families of pteridophytes. Among all these pteridophytes, six are threatened Philippine plant species. These are Platycerium coronarium, Ceratopteris thalictroides, Tectaria psomiocarpa, Psilotum nudum, Blechnum egregium, and Angiopteris evecta. This study contributes to the baseline data on Philippine pteridophytes especially on their distribution, and can serve as reference for biodiversity conservation and restoration efforts as ferns may help in the stabilization of degraded lands and facilitation in plant communities.

KEYWORDS: Pteridology, Ferns, Biodiversity and conservation, Checklist, Ilocos Norte

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New Distributional Records of Utricularia striatula Smith (Lentibulariaceae) in Mindanao, Philippines

Short Communication (Diversity and Distribution)

Date Posted (Final Published Version) : May 2, 2018

by Mark Arcebal K. Naive, Dave P. Buenavista and Noe P. Mendez

ABSTRACT

Utricularia striatula (Lentibulariaceae) is reported for the first time in the Southern Philippines and represents a new record for Mindanao Island. Full descriptions of the species, its habitat ecology, along with photographs are provided.

KEYWORDS: Bladderwort, Bukidnon, Carnivorous plant, Lithophytic, Utricularia striatula

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Tree Species Diversity of the Remaining Forest Fragments in Cavite, Luzon Island, Philippines

Primary Research Paper (Diversity and Distribution)

Date Posted (Final Published Version) : September 10, 2018

by Rubie M. Causaren, Ronaldo D. Lagat and Esperanza Maribel G. Agoo

ABSTRACT

Cavite has remaining secondary lowland forest fragments that are believed to be either remnant from commercial logging activities ca. 25-45 years ago or as a direct result of land conversions for agriculture or human settlements. There have been no vegetation studies among these forest fragments except in Mt. Palay-Palay in 2004. The aim of the research was to describe these remaining forest fragments (in addition to Mt. Palay-Palay), their tree species diversity, composition, ecological assessment and current anthropogenic threats affecting these areas. Vegetation analysis was performed using the Point-Centered Quarter Method (PCQM) in 72 100-m transects in forest fragments with different habitats. Species diversity was computed using Shannon’s diversity index (H′). A total of 2,853 tree individuals belonging to 50 families, 127 genera, and 174 species was encountered. Species diversity indices (H′) in all forest fragments were high and their importance value indices (IVIs) fall within the range of IVIs of tropical forest inventories. Assessment of ecological status revealed that of the 174 species, 44 (25.3%) are endemic, 114 (65.5%) are native/indigenous, and 16 (9.2%) are exotic/introduced. Thirty-nine angiosperms are threatened representing 8.9% of all threatened angiosperms in the Philippines. Overall, Cavite’s remaining forest fragments are diverse in terms of tree species and all experience anthropogenic threats and it is highly recommended that they be protected and conserved including the diverse fauna and flora associated with these areas.

KEYWORDS: Anthropogenic pressures, Diversity index, PCQM, Secondary lowland forest, Threatened, Vegetation analysis

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Floristic Composition Of The Remaining Forests In Upland Cavite, Luzon Island, Philippines

Primary Research Paper (Diversity and Distribution)

Date Posted (Final Published Version) : September 10, 2018

by Maria Melanie P. Medecilo and Myra N. Lagat

ABSTRACT

Cavite Province lies in the western monsoon forest zone of the Philippines and is considered as a tropical lowland rainforest making it a haven for diverse flora and fauna. The existing total land forest area is 8,624.956 hectares, but the only proclaimed national park is Mts. Palay-palay/Mataas na Gulod Protected Landscape. Unfortunately, the remaining forests are not spared from biodiversity loss because of its accessibility to Metro Manila, which eventually leads to unsustainable use of natural resources. This study was conducted to characterize the floristic composition, analyze the vegetation structure, and provide an inventory of plants in the provinces’ remaining forests. Data collection was done from June 2014 to March 2016. Forty- six plots (20m x 20m) were used for tree species composition. The plot size for shrub and non-woody plants was 5m x 5m quadrats while for herbaceous plants it was 1m x 1m quadrat. Plant diversity and environmental parameters in each plot were measured and recorded. Canonical Correspondence Analysis (CCA) was employed to analyze the relationships between vegetation and environmental variables. The study documented 501 species belonging to 336 genera and 113 families. Three vegetation types, secondary forest, agricultural ecosystem, and semisecondary (mixed forest) were documented in the remaining forests in Upland Cavite and the Protected Area (PA) part is characterized as lowland evergreen dipterocarp rainforest
dominated by Shorea guiso, Ficus chrysolepis, Diospyros pyrrhocarpa, Buchanania arborescens and Strombosia philippinensis. The forest floor is dominated by Anaxagorea luzonensis, Aglaonema commutatum and Bolbitis rhizophylla.

KEYWORDS: Plant diversity, Vegetation, Lowland dipterocarp forest, Mts. Palay-palay/Mataas Na, Gulod Protected Landscape, Conservation

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Philippine Freshwater Prawns (Macrobrachium spp.). Aquaculture Extension Manual No. 43

Book Review

Date Posted (Final Published Version) : September 10, 2018

by Lawrence M. Liao

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Philippine Journal of Systematic Biology Print ISSN: 1908-6865; Online ISSN: 2508-034