Judul: Morfologi Kelenjar Lingualis Walet Linchi (Collocalia linchi) pada Masa Berbiak dan Bersarang
Abstrak: This research was aimed to describe the lingual gland morphology of the cave swiftlets (C. linchi) during reproduction and nesting period. Thirty six cave swiftlets were used in this research. The result showed that the lingual gland consist of anterior and posterior glands. Histologically, the anterior lingual gland was a simple mucous tubular gland and the posterior lingual gland was a complex (branched) mucous tubular gland. The lumen during reproduction period was smaller than the lumen during nesting period. Using AB pH 2.5 and PAS staining method, the lingual gland was detected containing of acid and neutral carbohydrate in the acinar of the anterior and posterior lingual glands. The intensity of the stain during the reproduction period was weaker than the nesting period.
Keyword: reproduction and nesting period, lingual gland, C. linchi

Judul: Morphofunction changes of gonadal and mandibular glands of the cave swiflets (Collocalia linchi) during nesting and reproductive period
Abstrak: The present study aimed to study the morphological and histochemical changes and possible correlation between the gonads and mandibular glands of the cave swiflets (Collocalia linchi) during reproductive and nesting period. A total of seventy two adult birds were used in this study. The birds, three males and three females, were collected each month during a period of one year. After being sacrificed, samples of gonads and mandibular salivary glands were taken out and processed routinely for light microscopy. The present result showed that the gonads were active during the period of February - June. In the testis, the size of the testicle were similar throughout the year, but the testis had different color according to month. The testis in June - January were black in color, and were white and black in February, March, May and were all white in April. The size and structure of the ovaries were also increase towards February - May. Therefore the period of February - June was regarded as reproductive period of the cave swiftlet. The size and structure of mandibular glands were also clearly increased and the glands were more active during the nesting and reproductive period. Histochemically, the bindings of some lectins in the gonad and mandibular glands were also increase in the number of reactive cells and in the intensities of the positive reactions during the nesting and reproductive period, suggested that certain carbohydrates were involved and may play important roles in the reproductive function of the cave swiftlet. The present result showed that there were clear signs on the functional and structural changes of the gonads and mandibular glands of the cave swiftlets during the active nesting and reproductive period, suggested a possible regulatory mechanism of the mandibular gland through gonadal hormones pathway.
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Judul: Pengaruh Pencemaran Udara Yang Diemisikan OIeh Kendaraan Bermotor Terhadap Ketahanan Tanaman Perkotaan
Abstrak: Besarnya jumlah pemakaian kendaraan bermotor diperkotaan secara langsung turut mendorong penurunan kualitas lingkungan perkotaan dengan adanya pencemaran udara dari gas emisi kendaraan bermotor. Beberapa jenis gas yang die~nisikan oleh kendaraan bermotor seperti ozon, oksida belerang, dan oksida nitrogen dapat berbahaya bagi manusia, hewan maupun tumbuhan. Pembangunan butan kota merupakan salah satu alternatif dalam mengatasi berbagai masalah lingkungan di perkotaan, terutama masalah penceinaran udara. Dengan adanya tajuk hutan kota bahan-bahan pencemar udara dapat dikurangi melalui kemampuan tanaman dalanl menyerap dan menjerap bahan-bahan pencemar tersebut. Namun demikian tidak semua jenis tanaman mampu bertahan dalam kondisi udara tercemar. Pada jenis yang tidak tahan, pencemaran udara dapat menyebabkan pertumbuhdn terhambat dan lebih jauh lagi dapat menyebabkan tanaman mati. Untuk meinaksimalkan fungsi hutan kota dalaln lnengulangi penceinaran udara, penting untuk diketahui jenis-jenis tanaman perkotaan yang tahan terhadap kondisi udara tercemar.
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