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Crustacea Di Pantai Prigi Dan Pantai Popoh Selatan Jawa

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Crustacea Di Pantai Prigi Dan Pantai Popoh Selatan Jawa Oseana, Volume xxxvm, Nomor 4, Tabun 2013: 37-46 ISSN 0216-1877 CRUSTACEA DI PANTAI PRIGI DAN PANTAI POPOH SELATAN JAWA Oleh l)Rianta Pratlwl dan 2)lndra Aswandy ABSTRACT OBSERVATION OF CRUSTACEA FROM PRIGIAND POPOHBEACH, soum JAVA SEA. Prig; and Popoh Beach (EastJava) is located on the banks of the South of Java, facing the Indian Ocean, which has high and strong waves. The existence of marine lifes, especially crustaceans in high and strong wave areas have not been known. The aim of this study was to observe the crustacean species that can survive in the lWlVywaters. Thepresence of crustaceans ~re not vary, most oj the species can adapt to the extreme natural conditions (wavy waters). Most crustacean species (Porcellanidae, Xanthidae and Diogenidaejusually live and hide under the rocks, whiles in the mangrove areas ~re dominated by Ocypodidae, Sesarmidae and Grapsidae. PENDAHULUAN dengan laut bebas Samudera Hindia ini memang banyak meoawarkan keeksotikan keindahan Kabupaten Trenggalek yang posisinya panorama pantai, baik wisata bahari maupun berada di bagian selatan Jawa Timur, sek:itar 186 keindahan deburan ombaknya. Pantai Popob km dari Surabaya dan berbadapan langsung berbentuk teluk dan berada di ujung timur dengan Samudera Hindia memiliki baoyakpantai pegunungan Kidul. Angin laut yang tidak begitu dan berpotensi untuk dijadikan sebagai tempat kuat, dan keindahan gunung disekitar teluk wisata bahari. Letaknya yang berhadapan telah menjadi daya tarik utama pantai ini dengan Samudera Hindia, dan berupa teluk, (Anonim, 2012). menyimpan beragam potensi yang nampaknya Kondisi perairan yang bergelombang belum dioptimalkan. Pantai Popoh tepatnya di kuat baik di Prigi maupun di Popob merupakan pesisir Samudra Hindia, 30 kilometer sebelah tujuan utama dari tulisan ini yaitu untuk selatan kabupaten Tulungagung, adalah salah mengamati jenis-jenis crustacea yang dapat satu obyek wisata pantai yang memiliki pantai bertahan hidup di daerah perairan bergelombang berpasir dan berbatu yangjuga dijadikan sebagai energi tinggi dankuat. objek wisata, Pantai yang laogsong berhadapan I) Bidang Sumberdaya Laut, Pusat Penelitian Oseanografi-LIPI, Jakarta 2) Bidang Sumberdaya Laut, Pusat Penelitian Oseanografi-LIPI,Jakarta 37 KEADAAN UMUM LOKASI yang lebih keh itaman, bcrtekstur balus, PENGAMATAN bercampur dengan sedikit pecahan karang. Terdapat aliran-aliran air tawar yang masuk ke Pantai Pasir Putih, Prigi daerah pantai, menyebabkan pantai tersebut Secara umum, kondisi fisiografis wilayab terlihat sangat alami. Selain itu.juga memiliki yang ada di Watulimo Kabupaten Trenggalek garis pantai yang panjang dengan pola landai bagian utara, barat dan timur merupakan daerah dan beberapa gugusan batu karang besar yang dataran tioggi (pegunungan), sedangkan hagian menjulang tinggi. selatan merupakan daerab pesisir (lautan) dan Di daerahPantai Damai banyakelijumpai sebagian daratan. Oi tepi pantai juga terdapat crustacea dari jenis Clibanarius sp. batu-batu besar yang selalu terkena deburan (Diogenidae), Ocypode cordimana, Uca sp. ombak yang kuat, sedangkan di tengah pantai (Ocypodidae), Sesarma pictum (Sesarmidae), terdapat susunan batu lima sehingga daerah Gaetice sp.(Varunidae), Lachnopodus sp., tersebut dikenal dengan ..WatuLimo atau Lima Phymodius sp. dan Atergatis floridus batu .. (Wardhani, 2011). (Xanthidae). Kondisi pantai berbatu-batu merupakan daerah yang sangat disukai oleb crustacea jenis: Pantai Karanggongso A/pheus lobidens (AIpbeidae) , Calcinus sp., Pantai Karanggongso terletak 3 km ke Clibanarius striolatus (Oiogenidae), arab timur dari Pantai Prigi. Pantai dengan pasir Petrolisthes elongatus, Petrolisthes armatus putih sepanjang 1,5 k:m ini tidak langsung (Porcellanidae), Lachnopodus sp. Paraxanthias berhadapan dengan laut selatan, tapi tertutup sp. dan Phymodius sp. (Xanthidae). oleh bukit kecil di tengah pantai atau berada dalam teluk yang dalarn, sehingga tenang dan Paotai Damas, Prigi ombaknya tidak terlalu kuat. Pantai dengan Pantai Damas, merupakan pantai yang kondisi demikian sangat banyak dijumpai masih alami, terletak elidesa Karanggandu, 5 km crustacea dari jenis A tergatis floridus dan barat daya dari Pantai Prigi. Berbeda dengan Phymodius sp (Xantbidae) yang bersembunyi Pantai Pasir Putih, Pantai Damas merniliki pasir elibawah batu. (a) (b) Gambar I. Pantai Pasir putih dengan batu-batu di pinggir pantai (a), pantai berbatu dan gelombang keras yang menerpa Pantai Prigi, Trenggalek (b)(Sumber: Koleksi pribadi dan Anonim 2,2013). 38 Gambar 2. Pantai Damas dengan pasir balus berwama coklat kehitaman (a), Pantai Damas dengan air tawar yang masuk memecah pantai (b) (Sumber: Koleksi pribadi). (a) (b) Gambar 3. Tumbuhan mangrove di Pantai Cengkrong (a dan b) (Sumber: Koleksi pribadi). (a) (b) Gambar4. Kepiting Uca spp. yang dominan di lantai mangrove bersubstrat lumpur (a dan b) (Sumber: Koleksi pribadi). 39 Pantai Cengkrong, Prigi Pantai Popoh dibagi menjadi dua kawasan, yaitu Pantai Cengkrong terletak di scbclab kawasan timur mcrupakan wilayab yang terjal barat Prigi, banyak ditumbuhi mangrove dengan bagian barat dan bagian timur, Pantai Popoh substrat berupa lumpur pasir (compact) dan berbatu-batu vulkanik yang besar, Ombak berwarna hitam. Sebelab tirnur terdapat muara di pantai Popoh sangat besar, walau sudah sungai Cengkrong, schingga sangat dipasang pagar pengaman, setiap pengunjung berpengarub terbadap perairan laut (karena air barus selalu waspada saat berada di tepi tebing sungai masuk ke dalam laut). Oitumbuhi oleh yang curam di Popoh bagian timur. Oi Pantai mangrove yang sangat lebat dan rapat, di lantai Popoh hanya ditcmukan crustacea dari jcnis mangrove banyak ditcmukan komunitas Grapsus sp., Etisus sp. dan Atergatisfloridus. kepiting Uca spp. yang dominan dan sangat berwarna wami karapasnya. Pantai Sidem (Thlung Agung) Selain dijumpai kepiting Uca yang Pantai Sidem letaknya di sebelah barat dom inan ditemukan juga crustacea dari jews Pantai Popoh, dan terdiri dari perkampungan A/pileus lobidens, Clibanarius striolatus, yang padat penduduk yaitu di Kecamatan Macrophthalmajaponicus, Thalamita prymna, Besuki, Kabupaten Tulungagung, Jawa Timur. Ptychognathus barbatus, Sesarma pic/urn, Pantai Sidcm mcmiliki ciri khas yaitu hamparan Sesarma plicatum, Varuna litt erata dan pantai yang panjang, luas dan bcrpasir Liomera edwardsi. kecoklatan scrta air laut yang lebih tcnang dibandingkan Pantai Popoh. Pantai Sidemjuga Pantal Popoll (fulungAgung) merupakan tempat menarik jaring nelayan• PantaiPopoh, TulungAgungmerupakan nelayan seternpat, scbagai tambahan hidupnya. tempat wisata yang sangat ramai dikunjungi Dari hasil jaring yang ditarik oleh nelayan wisatawan, pantainya memiLikipasir yang coklat banyak ditemukan udang-udang dari jenis dan air laut yang keruh. Pantai langsung Fenneropenaeus merguiensis (udang putih) bcrhadapan dengan laut bebas Samudcra Hindia dan Metapenaeus ensis (udang dogol) yang dcngan ombak yang tinggi dan kuat, schingga memang sangat mcnyukai daerah dcngan tidak dapat digunakan untuk wisata mcnyclam. kondisi laut yang tcnang dan ditemukan Icbih ketengablaut. (b) Gambar 5. Kepiting Sesarma sp. di akar mangrove bersubstrat lumpur (a dan b) (Sumber : KoJeksipribadi). 40 (a) (b) Gambar6. Perahu bersandar di pantai Popoh (a), dan pantai berbatu Popoh, TulungAgung (b) (Sumber: Koleksi pribadi). (a) (b) Gambar 7. Pantai Sidem dengan warna air yang keruh kecoklatan (a) nelayan menarikjaring (b) (Sumber: Koleksi pribadi). JENIS CRUSTACEA DIPANTAI daerah dengan arus yang kuat, terutama di BERDINAMIKA TINGGI bawah batu-batu yang tertanam di pasir dan pecahan karang batu (Osawa, 2010; Nelson, Crustacea yang ditemukan di lokasi 2009). Berdasarkan pengamatan yang pengamatan umumnyamerupakan anggota dari dilakukan, diketahui bahwa kelompok yang suku Porcellanidae, Diogenidae dan Xanthidae paling banyak ditemukan adalah dari Suku yang biasa hidup pada kondisi laut Porcellanidae yaitu jenis Petrolisthes bergelombang tinggi dan kuat. Jenis-jenis elongatus dan P. armatus yang hidup di bawah Crustacea yang ditemukan untuk lebih jelasnya batu-batu dengan gelombang keras (Gambar 8 dapat dilihat pada Tabell. sebagai berikut: a). Jenis tersebut memiliki tubuh berwama Jenis-jenis kepiting yang ditemukan di kehijauan agak kecoklatan atau hijau kebiruan lokasi pengarnatan sudah beradaptasi dan (biasanya disesuaikan dengan warna habitat memili.kihabitat yang khusus yaitu lebih memi1ih atau warna batu, dimana hewan tersebut 41 Tabell. Jenis-jenis Crustacea yang ditemukan di Pantai Prigi (Treoggalek) dan Pantai Popob (Tulung Agung), 2011. No. Low; lenis Crustacea lenis Cruslilcea HabitldlSlI",ber Do",ilUlft dipero/eh 1 Pantai pasir putih Alpheus lobidens Petrolisthes elongatus, Di balik batu• Prigi (Alpheidae), Calcinus sp., Petrolisthes armatus batu besar di Clibanarius striolatus pinggir pantai (Diogenidae), Petrolisthes elongatus, Petrolisthes armatus (porceUanidae), Lachnopodus sp. Paraxanthias sp. dan Phymodius sp. (Xantbidae ). 2 Pantai Damas, Clibanarius sp. Prigi (Diogenidae), Ocypode cordimana, Uca sp. (Ocypodidae), Sesarma pictum (Sesannidae), Gaetice sp. (Varunidae), Lachnopodus sp., Phymodius sp. dan Atergatis jloridus (Xanthidae). 3 Pantai Atergatis jloridus dan Karanggoogso Phymodius sp (Xanthidae), 4 Pantai Cengkrong Alpheus lobidens, Uca spp. (Uca Mangrove yang Clibanarius striolatus, coarctata. Uca flamula, sangat Iebat dan Macrophthalma Uca loctea, Uca vocans, substrat lumpur japonicus, Thalamila Uca annulipes, Uca prymna, Ptychognathus dussumieri dan Uca barbatus, Sesarma pictum, urvillel) Sesarma plicatum,
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    AEROBIC METABOLISM AND DIETARY ECOLOGY OF OCTOPUS RUBESCENS by KIRT L. ONTHANK A THESIS submitted to WALLA WALLA UNIVERSITY in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE 10 MARCH 2008 ABSTRACT Several lines of evidence suggest that octopuses have a large impact on benthic communities through the octopuses' trophic ecology. Octopuses have a high metabolism and require substantial quantities of food in proportion to their body size. They also can be very abundant where they occur and may be more pervasive than realized due to their cryptic nature. Octopus rubescens is the most common shallow water octopus on the west coast of North America, and seems to be a likely candidate to exert considerable influence on lower trophic levels. To begin exploring this ecological role, the aim of this project was to relate prey choice of O. rubescens to energy budgeting by the species. Thirty male Octopus rubescens were collected from Admiralty Bay on Whidbey Island, Island County, WA. Energy budgets were constructed for several of these octopuses, prey preference and handling time determined, and metabolic measurements taken for each. In these experiments the prey choices made by O. rubescens deviated widely from those expected from a simple model of maximizing caloric intake per unit time. O. rubescens chose Hemigrapsus nudus over Nuttallia obscurata as prey by a ratio of 3 to 1, even though when tissue energy content and handling time are accounted for the octopus could obtain 10 times more calories per unit time from N. obscurata than from H. nudus. Octopus energy budgets were similar when consuming either of the prey species except that lipid extraction efficiency (ratio of assimilated to consumed lipids, the remainder is defecated) was significantly higher in octopuses III consuming H.
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    Checklist of the Shrimps, Crabs, Lobsters and Crayfish of British Columbia 2011 (Order Decapoda) by Aaron Baldwin, PhD Candidate School of Fisheries and Ocean Science University of Alaska, Fairbanks [email protected] The following list includes all decapod species known to have been found in British Columbia. The taxonomic scheme is the most currently accepted and follows the higher decapod classification of De Grave et al. (2009). Additional sources used in this classification include Bowman and Abele (1982), Abele and Felgenhauer (1986), Martin and Davis (2001), and Schram (2001). It is likely that further research will reveal additional species, both as range extensions and undescribed species. List revised April 30, 2011. Notable changes from earlier versions: The Superfamily Galatheoidea has been divided following the molecular taxonomies as suggested by Ahyong et al. (2009). This change has been verified by more recent work by Ahyong et al. (2010) and Schnabel et al. (2011). These works separate the Superfamily Chirostyloidea from the traditional galatheioids. Additionally these works change the higher taxonomies of the galatheioid families. Potential future taxonomic changes: Ahyong et al. (2009) in their molecular analysis of the infraorder Anomura found the superfamilies Paguroidea and Galatheoidea to be polyphyletic. The changes to the Paguroidea are not yet reflected in the taxonomic nomenclature, but are expected. Wicksten (2009) adopted the classification scheme of Christoffersen (1988) for the caridean family Hippolytidae
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