scholarly journals Diversity and distribution of North Atlantic Lepechinellidae (Amphipoda: Crustacea)

2020 ◽  
Author(s):  
Anne-Nina Lörz ◽  
Saskia Brix ◽  
Anna M Jażdżewska ◽  
Lauren Elizabeth Hughes
Keyword(s):  
North Atlantic ◽  
Molecular Techniques ◽  
Amphipod Species ◽  
Marine Animals ◽  
Separate Species ◽  
Molecular Separation ◽  
The Family ◽  
Depth Ranges ◽  
New Synonymy ◽  
First Time

Abstract North Atlantic lepechinellid amphipod species were investigated using morphological and molecular techniques based on material collected during two IceAGE expeditions in 2011 and 2013 (Icelandic marine Animals: Genetics and Ecology). The presence of eyes is reported for the first time for the family Lepechinellidae. Four lepechinellid species, Lepechinella grimi, L. helgii, L. skarphedini and Lepechinelloides karii were distinct across morphological, COI and 16S data. Lepechinella arctica, L. norvegica and L. victoriae were seen to be morphologically similar. No morphological or molecular separation was observed between L. arctica and L. norvegica, indicating that these taxa should not be considered separate species. Full illustrations of habitus and mouthparts are presented for L. arctica and a new synonymy is provided recognizing L. norvegica as a junior synonym of L. arctica. While L. victoriae shows little morphological variation from L. arctica, COI and 16S data show this taxon as genetically distinct. Furthermore, new geographic and depth ranges for North Atlantic and Arctic lephechinellids are provided.

Mallacoota carinacera sp. nov., a new amphipod species of the family Maeridae (Hadzioidea, Senticaudata) from Micronesia

Crustaceana ◽  
2015 ◽  
Vol 88 (5) ◽  
pp. 551-566
Author(s):  
Tae Won Jung ◽  
Kon-Tak Yoon ◽  
Soo-Jin Heo ◽  
Do-Hyung Kang
Keyword(s):  
Related Species ◽  
Amphipod Species ◽  
Federated States Of Micronesia ◽  
The Family ◽  
Characteristic Features ◽  
First Time

Mallacootacarinacerasp. nov., a new amphipod species of the family Maeridae, collected from Weno Island, Chuuk, Federated States of Micronesia, is described for the first time, with a detailed description and illustrations, and characteristic features between related species are discussed.

scholarly journals Deep-sea ascidians (Chordata, Tunicata) from the SW Atlantic: species richness with descriptions of two new species

Zootaxa ◽  
2018 ◽  
Vol 4526 (1) ◽  
pp. 1 ◽  
Author(s):  
TAMARA MAGGIONI ◽  
ANABELA TAVERNA ◽  
PAOLA B. REYNA ◽  
GASTÓN ALURRALDE ◽  
CLARA RIMONDINO ◽  
...  
Keyword(s):  
New Species ◽  
Deep Sea ◽  
Benthic Communities ◽  
Submarine Canyon ◽  
Morphological Evidence ◽  
Separate Species ◽  
Ascidian Species ◽  
Sw Atlantic ◽  
New Synonymy ◽  
First Time

The understudied deep-sea benthic communities from the Southwestern Atlantic continental slope (200 m–3000 m depth) were sampled on August 2012 in an area located around 38°S that included the Mar del Plata submarine canyon. In these samplings we found a total of 16 ascidian species from six different families, of which two corresponded to new species. These were: Aplidium meridianum (Sluiter, 1906); Aplidium variabile (Herdman, 1886); Aplidium marplatensis Maggioni & Tatián (sp. nov. present work); Aplidium solitarium Maggioni & Tatián (sp. nov. present work); Synoicum georgianum Sluiter, 1932; Synoicum molle (Herdman, 1886); Synoicum sp.; Polysyncraton trivolutum (Millar, 1960); Sycozoa umbellata (Michaelsen, 1898); Ascidia meridionalis Herdman, 1880; Cnemidocarpa drygalskii (Hartmeyer, 1911); Styela squamosa Herdman, 1881; Pyura pilosa Monniot C. & Monniot F., 1974; Molgula pyriformis Herdman, 1881; Molgula setigera Ärnbäck-Christie-Linde, 1938 and Asajirus indicus (Oka, 1913). Based on morphological evidence, we propose the new synonymy: Molgula setigera Ärnbäck-Christie-Linde, 1938 = Molgula marioni Millar, 1960 = Molgula robini Monniot C. & Monniot F., 1983. We also propose to maintain Molgula pyriformis and Molgula malvinensis as separate species. We report: the extension of the distribution range of Aplidium meridianum, Synoicum georgianum, Polysyncraton trivolutum, Sycozoa umbellata, Cnemidocarpa drygalskii, Pyura pilosa and Molgula setigera, being the first time they are collected off La Plata River; the deepest registers for Synoicum georgianum, Poylsyncraton trivolutum, Sycozoa umbellata, Ascidia meridionalis, Pyura pilosa, Molgula pyriformis and Molgula setigera; and the shallowest register for Synoicum molle. 

The gelechiid fauna of the southern Ural Mountains, part II: list of recorded species with taxonomic notes (Lepidoptera: Gelechiidae)

Zootaxa ◽  
2010 ◽  
Vol 2367 (1) ◽  
pp. 1 ◽  
Author(s):  
JARI JUNNILAINEN ◽  
OLE KARSHOLT ◽  
KARI NUPPONEN ◽  
JARI-PEKKA KAITILA ◽  
TIMO NUPPONEN ◽  
...  
Keyword(s):  
New Combinations ◽  
Ural Mountains ◽  
Separate Species ◽  
Species Complexes ◽  
The Family ◽  
First Time

A list comprising 236 species in the family Gelechiidae from the southern Ural Mountains is presented. The material was collected during 1996–2007 on 21 different Finnish-Russian expeditions. The following new combinations are proposed: Caulastrocecis interstratella (Christoph, 1873) comb. n., Megacraspedus balneariellus (Chrétien, 1907) comb. n., Megacraspedus fallax (Mann, 1867) comb. n., Megacraspedus lagopellus Herrich-Schäffer, 1860 comb. rev., Megacraspedus niphorrhoa (Meyrick, 1926) comb. n., Scrobipalpa adaptata (Povolný, 2001) comb. n., Scrobipalpa dorsoflava (Povolný, 1996) comb. n., Scrobipalpa notata (Povolný, 2001) comb. n. and Scrobipalpa punctata (Povolný, 1996) comb. n. Neofriseria mongolinella Piskunov, 1987 stat. rev. is raised to the species rank (from subsp. of N. sceptrophora (Meyrick, 1926)). Previously unknown females of four species are described: Megacraspedus niphorrhoa (Meyrick, 1926), Monochroa nomadella (Zeller, 1868), Ivanauskiella psamathias (Meyrick, 1891) and Filatima zagulajevi Anikin & Piskunov, 1996. Trichembola neurophanes (Meyrick, 1926) syn. n. is shown to be a synonym of Megacraspedus fallax (Mann, 1867). Three separate species complexes are briefly discussed: Stomopteryx mongolica Povolný, 1975, Stomopteryx remissella (Zeller, 1847) and Aristotelia subericinella (Duponchel, 1843); each of them seems to contain unresolved taxonomic problems. Three species are reported for the first time from Europe: Neofriseria mongolinella Piskunov, 1987, Stomopteryx mongolica Povolný, 1975, and Anarsia sibirica Park & Ponomarenko, 1996. The following species are newly recorded from Russia: Apatetris kinkerella (Snellen, 1876), Catatinagma trivittellum Rebel, 1903, Megacraspedus balneariellus (Chrétien, 1907), Megacraspedus niphorrhoa (Meyrick, 1926), Chrysoesthia falkovitshi Lvovsky & Piskunov, 1989, Metzneria diffusella Englert, 1974, Ptocheuusa paupella (Zeller, 1847), Ptocheuusa abnormella (Herrich-Schäffer, 1854), Monochroa parvulata Gozmány, 1957, Eulamprotes plumbella (Heinemann, 1870), Aroga aristotelis (Millière, 1876), Filatima transsilvanella Z. Kovács & S. Kovács, 2001, Scrobipalpa adaptata (Povolný, 2001), Scrobipalpa dorsoflava (Povolný, 1996), Scrobipalpa halonella (HerrichSchäffer, 1854), Scrobipalpa lutea Povolný, 1977, Scrobipalpa magnificella Povolný, 1967, Scrobipalpa notata (Povolný, 2001), Scrobipalpa plesiopicta (Povolný, 1969), Scrobipalpa pulchra (Povolný, 1967), Scrobipalpa punctata (Povolný, 1996), Scrobipalpula diffluella (Frey, 1870), Caryocolum amaurella (M. Hering, 1924), Caryocolum repentis Huemer & Luquet, 1992, Syncopacma incognitana Gozmány, 1957, Syncopacma azosterella (Herrich-Schäffer, 1855), Syncopacma polychromella (Rebel, 1902), Brachmia procursella Rebel, 1903.

A REVISED CLASSIFICATION OF THE PIOPHILIDAE, INCLUDING ‘NEOTTIOPHILIDAE’ AND ‘THYREOPHORIDAE’ (DIPTERA: SCHIZOPHORA)

1977 ◽  
Vol 109 (S103) ◽  
pp. 1-66 ◽  
Author(s):  
J. F. McAlpine
Keyword(s):  
Sister Group ◽  
Systematic Position ◽  
Valid Species ◽  
Nominal Species ◽  
British Guiana ◽  
Evolutionary Changes ◽  
The Family ◽  
British Honduras ◽  
New Synonymy ◽  
First Time

AbstractThe systematic position of the Piophilidae sens. lat. within a group of nine schizophorous families with tephritid-like ovipositors (Lonchaeidae, Otitidae, Platystomatidae, Pyrgotidae, Tephritidae, Tachiniscidae, Richardiidae, Pallopteridae, and Piophilidae) is elucidated. It is shown to be a sister-group of the Pallopteridae, and these two families together with the Richardiidae comprise a monophyletic suprafamily unit within the larger group of families. The evolutionary changes that occurred within the Piophilidae are analyzed and the supposed phylogeny of its component taxa is portrayed. The family is redefined to include neottiophilids and thyreophorids and is classified into two subfamilies, Neottiophilinae and Piophilinae; the latter is divided into two tribes, Mycetaulini and Piophilini (with subtribes Piophilina and Thyreophorina). Twenty-three genera are recognized and taxonomically defined; this includes description of two new genera, Neopiophila and Parapiophila. Clusina Curran is synonymized withProtopiophila Duda (new synonymy), and four nominal species are placed in synonymy for the first time, i.e. Piophila anomala Malloch and Piophila setosa Melander and Spuler = Parapiophila vulgaris (Fallén) (new synonymy), Piophila flavifacies Brunetti = P. casei (Linnaeus) (new synonymy), and Mycetaulus pulchellus Banks = Mycetaulus longipennis Loew (new synonymy). Six new species, Actenoptera avalona (Newfoundland), Neopiophila setaluna (Northwest Territories), Protopiophila atrichosa (Peru and British Honduras), Protopiophila pallida (Peru and British Guiana), Prochyliza azteca (Mexico), and Prochyliza inca (Peru) are described. The following 20 new combinations are made: Mycetaulus lituratus (Melander and Spuler), Allopiophila testacea (Melander), Protopiophila nigriventris (Curran), Prochyliza lundbecki (Duda), nigricornis (Meigen), nigricoxa (Melander and Spuler) and nigrimana (Meigen), Arctopiophila arctica (Holmgren), Parapiophila atrifrons (Melander and Spuler), calceata (Duda), coerulescens (Zetterstedt), dudai (Frey), flavipes (Holmgren), lonchaeoides (Zetterstedt), nitidissima (Melander and Spuler), pectiniventris (Duda), penicillata (Steyskal), vulgaris (Fallén), and xanthopoda (Melander and Spuler). In all, 67 valid species are placed, their geographic distributions are outlined, and the zoogeographic implications are discussed. A lectotype is designated for Piophila flavitarsis Meigen = Madiza glabra Fallén (Milichiidae).A key to subfamilies, tribes, and genera is provided, and keys to world species are given where needed. An annotated world list of all names referred to the family (sens. lat.) is provided. The paper includes 58 figures, two tables, and 122 literature references.

scholarly journals Consolidated data on the phylogeny and evolution of the family Tritoniidae (Gastropoda: Nudibranchia) contribute to genera reassessment and clarify the taxonomic status of the neuroscience models Tritonia and Tochuina

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0242103
Author(s):  
Tatiana Korshunova ◽  
Alexander Martynov
Keyword(s):  
Taxonomic Status ◽  
Molecular Data ◽  
Model Systems ◽  
Morphological Data ◽  
Crown Group ◽  
Taxonomic Assignment ◽  
Species Identity ◽  
Separate Species ◽  
The Family ◽  
First Time

Nudibranch molluscs of the family Tritoniidae are widely used neuroscience model systems for understand the behavioural and genetic bases of learning and memory. However species identity and genus-level taxonomic assignment of the tritoniids remain contested. Herein we present a taxonomic review of the family Tritoniidae using integration of molecular phylogenetic analysis, morphological and biogeographical data. For the first time the identity of the model species Tritonia tetraquetra (Pallas, 1788) and Tritonia exsulans Bergh, 1894 is confirmed. T. tetraquetra distributes across the large geographic and bathymetric distances in the North-Eastern (NE) and North-Western (NW) Pacific. In turn, at NE Pacific coasts the separate species T. exsulans is commonly occured. Thus, it reveals a misidentification of T. tetraquetra and T. exsulans species in neuroscience applications. Presence of more hidden lineages within NW Pacific T. tetraquetra is suggested. The long lasting confusion over identity of the species from the genera Tritonia and Tochuina is resolved using molecular and morphological data. We also disprove a common indication about “edible T. tetraquetra” at the Kuril Islands. It is shown that Tochuina possesses specialized tritoniid features and also some characters of “arminacean nudibranchs”, such as Doridoxa and Heterodoris. Diagnoses for the families Doridoxidae and Heterodorididae are provided. Taxonomy of the genus Doridoxa is clarified and molecular data for the genus Heterodoris presented for the first time. A taxonomic synopsis for the family Tritoniidae is provided. A new genus among tritoniid taxa is proposed. Importance of the ontogeny-based taxonomy is highlighted. The cases when apomorphic characters considerably modified in a crown group due to the paedomorphosis are revealed. Tracing of the character evolution is presented for secondary gills–a key external feature of the family Tritoniidae and traditional dendronotacean nudibranchs.

Rubritalea spongiae sp. nov. and Rubritalea tangerina sp. nov., two carotenoid- and squalene-producing marine bacteria of the family Verrucomicrobiaceae within the phylum ‘Verrucomicrobia’, isolated from marine animals

2007 ◽  
Vol 57 (10) ◽  
pp. 2337-2343 ◽  
Author(s):  
Jaewoo Yoon ◽  
Yoshihide Matsuo ◽  
Satoru Matsuda ◽  
Kyoko Adachi ◽  
Hiroaki Kasai ◽  
...  
Keyword(s):  
Type Strain ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
Diaminopimelic Acid ◽  
Rrna Gene ◽  
Marine Animals ◽  
Separate Species ◽  
The Family ◽  
Definition Of ◽  
Taxonomic Studies

Two Gram-negative, non-motile, coccoid or rod-shaped, chemoheterotrophic bacteria designated strains YM21-132T and YM27-005T were isolated from marine animals, and were subjected to a polyphasic taxonomic examination. Phylogenetic analyses based on 16S rRNA gene sequences indicated that the two isolates belong to the genus Rubritalea of the phylum ‘Verrucomicrobia’ (subdivision 1). The novel isolates shared approximately 97–98 % sequence similarity with each other and showed 93–97 % similarity with Rubritalea species of the family Verrucomicrobiaceae. The level of DNA–DNA relatedness between strains YM21-132T and YM27-005T was less than 70 %, which is accepted as the phylogenetic definition of a species. Both strains produced reddish carotenoid pigments and squalene. The cell wall peptidoglycan of both strains contained muramic acid and meso-diaminopimelic acid. The G+C contents of the genomic DNA were 48.0 mol% (strain YM21-132T) and 50.3 mol% (strain YM27-005T). The presence of MK-8 and MK-9 as the major isoprenoid quinones, and iso-C14 : 0, iso-C16 : 0 and C16 : 1 ω7c as the major cellular fatty acids supported the identification of the two novel strains as members of the genus Rubritalea. On the basis of polyphasic taxonomic studies, it was concluded that these strains should be classified as representing two novel, separate species in the genus Rubritalea within the phylum ‘Verrucomicrobia’, for which the names Rubritalea spongiae sp. nov. (type strain YM21-132T=MBIC08281T=KCTC 12906T) and Rubritalea tangerina sp. nov. (type strain YM27-005T=MBIC08282T=KCTC 12907T) are proposed.

The spongillafly genus Sisyra Burmeister, 1839 (Neuroptera: Sisyridae) from Brazil: Distributional, taxonomical and bionomical notes

Zootaxa ◽  
2020 ◽  
Vol 4802 (2) ◽  
pp. 374-382
Author(s):  
ALICE CARVALHO ASSMAR ◽  
ADOLFO RICARDO CALOR
Keyword(s):  
Aquatic Insects ◽  
Male Genitalia ◽  
Northeastern Brazil ◽  
Semiarid Region ◽  
Small Family ◽  
Extant Species ◽  
The Family ◽  
Caatinga Biome ◽  
New Synonymy ◽  
First Time

Sisyridae is a small family of aquatic insects, with 73 extant species described worldwide. In Brazil, 17 species of two genera, Climacia McLachlan, 1869 and Sisyra Burmeister, 1839, have been reported. In this paper, the family is recorded from the Caatinga biome (semiarid region), Northeastern Brazil, for the first time, including a record of the genus Sisyra from Ceará State. Additional distributional data are presented for both S. apicalis Banks, 1908 and S. panama Parfin & Gurney, 1956. Sisyra ariasi Penny, 1981 is here synonymized with S. panama, NEW SYNONYMY. Illustrations of the male genitalia of S. minuta Esben-Petersen, 1935, and bionomic notes for S. panama are provided. 

DIGAMASELLUS BERLESE, 1905, AND DENDROLAELAPS HALBERT, 1915, WITH DESCRIPTIONS OF NEW TAXA OF DIGAMASELLIDAE (ACARINA: MESOSTIGMATA)

1975 ◽  
Vol 107 (1) ◽  
pp. 1-43 ◽  
Author(s):  
Evert E. Lindquist
Keyword(s):  
Type Species ◽  
Sensu Stricto ◽  
Species Group ◽  
Nominal Species ◽  
Comprehensive Description ◽  
The Family ◽  
The Status ◽  
Relationship Of ◽  
New Synonymy ◽  
First Time

AbstractConceptual and nomenclatural problems of Digamasellus Berlese, 1905 and Dendrolaelaps Halbert, 1915 are reviewed. It is shown that Digamasellus punctum (Berlese, 1904) is conspecific with D. perpusillus Berlese, 1905, the type-species of Digamasellus Berlese, 1905 (new synonymy). Hence, the genus in which punctum is included must take the name Digamasellus.A new case is made for recognizing Digamasellus and Dendrolaelaps as distinct genera in the Digamasellidae. Two other genera of Digamasellidae are recognized, Dendroseius Karg, 1965 and a broadened concept of Longoseius Chant, 1961. Two new subgenera are proposed, Dendrolaelaspis in the genus Dendrolaelaps, and Longoseiulus in the genus Longoseius. Diagnoses, descriptions, and a key to these genera and subgenera of Digamasellidae, along with a comprehensive description of the family, are presented. The phylogenetic relationship of the Digamasellidae in the Rhodacaroidea, and some thoughts on phylogeny within the Digamasellidae are given.A second species of Digamasellus sensu stricto, D. australis, is described as new, and the female and male adults of the type-species of Longoseius, L. (L.) cuniculus Chant, are described for the first time. New combinations include: Dendrolaelaps (Dendrolaelaspis) orientalis (Bhattacharyya), Longoseius (Longoseiulus) longulus (Hirschmann), L. (L.) ornatus (Hirschmann), L. (L.) aberrans (Hirschmann), and L. (L.) brachypoda (Hurlbutt).The absence of the protonymphal seta, md, from the telotarsi of legs II to IV is noted as a singular deficiency in the leg setation of Longoseius cuniculus Chant. This seta is not known to be absent in any other species among the families of Gamasina.A paper published by Hirschmann while the present work was in press is considered in an addendum to this paper. The subgeneric name Dendrolaelaps (Tridendrolaelaps) Hirschmann, 1974 is an objective junior synonym of Digamasellus Berlese, 1905, and the latter also has priority over Dendrolaelaps Halbert, 1915 so long as both names are applied within the same genus. A lectotype is designated for the nominal species Digamasellus punctum (Berlese). The status of the subgenus Dendrolaelaps (Multidendrolaelaps) Hirschmann, 1974 is problematic, pending a more comprehensive diagnosis providing data sufficient to indicate whether this is a monophyletic group. The quadrisetus group is newly proposed for some of the species placed by Hirschmann in the armatus group of Multidendrolaelaps. Digamasellus badenhorsti (Ryke) is tentatively considered as the second known species of Dendroseius Karg. Hirschmann's opinion, that Longoseius Chant warrants no more than a species-group in Dendrolaelaps, is disputed.

Buried Narratives: Exhuming the Mother's Story in Oliver Twist

2018 ◽  
Vol 8 (3) ◽  
pp. 247-266
Author(s):  
Michelle L. Wilson
Keyword(s):  
Social Change ◽  
Maternal Inheritance ◽  
The Novel ◽  
Poor Law ◽  
The Family ◽  
The Law ◽  
First Time ◽  
Critical Consideration

Initially, Oliver Twist (1839) might seem representative of the archetypal male social plot, following an orphan and finding him a place by discovering the father and settling the boy within his inheritance. But Agnes Fleming haunts this narrative, undoing its neat, linear transmission. This reconsideration of maternal inheritance and plot in the novel occurs against the backdrop of legal and social change. I extend the critical consideration of the novel's relationship to the New Poor Law by thinking about its reflection on the bastardy clauses. And here, of course, is where the mother enters. Under the bastardy clauses, the responsibility for economic maintenance of bastard children was, for the first time, legally assigned to the mother, relieving the father of any and all obligation. Oliver Twist manages to critique the bastardy clauses for their release of the father, while simultaneously embracing the placement of the mother at the head of the family line. Both Oliver and the novel thus suggest that it is the mother's story that matters, her name through which we find our own. And by containing both plots – that of the father and the mother – Oliver Twist reveals the violence implicit in traditional modes of inheritance in the novel and under the law.

Faktor-Faktor Determinan yang melatar belakangi Kehamilan Remaja di Desa Pandansari Kecamatan Poncokusumo Kabupaten Malang

2020 ◽  
Vol 7 (2) ◽  
pp. 247-255
Author(s):  
Maria Magdalena Setyaningsih ◽  
Emy Sutiyarsih
Keyword(s):  
Sex Education ◽  
Teen Pregnancy ◽  
Teenage Pregnancy ◽  
Well Being ◽  
Case Control ◽  
Control Group ◽  
Case Group ◽  
The Family ◽  
History Of ◽  
First Time

Kehamilan remaja adalah kehamilan yang terjadi pada remaja berusia kurang dari 20 tahunan. Kehamilan remaja memberikan banyak kerugian bagi kesehatan, mental dan psikologis, kesejahteraan ekonomi dan peluang karier, kemiskinan dan prospek kehidupan masa depan remaja. Tujuan penelitian mengidentifikasi faktor determinan yang melatarbelakangi terjadinya kehamilan remaja. Jenis penelitian adalah penelitian analitik kategorik jenis survei kuantitatif dengan desain case control. Populasi semua perempuan yang bertempat tinggal di wilayah dusun Wonosari, Sukosari, dan Krajan Pandansari dan pernah/sedang hamil pertama kali pada usia kurang dari 20 tahun. Teknik pengambilan sampel cluster random sampling besar sampel 73. Berdasarkan hasil model akhir analisis multivariat, diketahui bahwa variabel pendidikan, riwayat kehamilan remaja pada keluarga dan usia menikah merupakan variabel yang berhubungan dengan kejadian kehamilan remaja setelah dikontrol oleh variabel akses informasi, responden berpendidikan rendah memiliki peluang 20,8 kali lebih tinggi, responden yang memiliki riwayat kehamilan remaja pada keluarga memiliki peluang 14,9 kali lebih tinggi, responden yang menikah pada usia <20 tahun memiliki peluang 12,1 kali lebih tinggi, responden dengan pemahaman yang kurang baik terkait penggunaan kondom memiliki peluang 5,9 kali lebih tinggi untuk terjadi kehamilan remaja. Oleh karena itu perlu dibangun karakter buiding, sosial karakter suport untuk para ibu remaja dan keluarga sehingga terbangun interaksi yang baik dalam keluarga yang dilandasi dengan pendidikan dan pemahaman yang baik tentang Pendidikan seksualitas. Teen pregnancy is a pregnancy that occurs in adolescents aged less than 20 years old. Teen pregnancy provides many disadvantages for health, mental, psychological, economic well-being, career opportunities, poverty, and the future life. The aim of the study was to identify the determinants underlying teen pregnancy incidence. This study was a quantitative study with categorical analytic method. The study design used a case control with two comparison groups. The groups were control group and case group. The population in this study was all women who lived in the Wonosari, Sukosari, and Krajan Pandansari district and had or were pregnant for the first time at the age of less than 20 years old. Seventy three respondents were recruited using cluster sampling technique. The case group consists of women who were or had pregnant for the first time at the age of less than 20 years old and their children are currently aged ≤ 1 years old. The control group consists of women who were pregnant for the first time at the age of > 20 years old. The data was collected using a questionnaire. The findings showed that education, history of teen pregnancy in family and the age of marriage were related to the incidence of teen pregnancy after being controlled by information access. Low-educated respondents had 20.8 times higher chance of experiencing teen pregnancy; respondents with a history of teen pregnancy in the family had 4.9 times higher chance of experiencing teen pregnancy; respondents who were married at the age of < 20 years old had 12.1 times higher chance of experiencing teen pregnancy; respondents with poor understanding of condom use had 5.9 times higher chance of teenage pregnancy. In conclusion, the findings suggest to build good interactions in the family based on education and a good understanding of sex education.

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