Toplam 24 içerik listeleniyor
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Eşsiz, ancak yoğun tehdit altında olan bir bölge: ANADOLU!
Dünya'da 36 biyolojik çeşitlilik sıcak noktası var. Anadolu, bu sıcak noktaların üçünün karşılaştığı bir bölge: Akdeniz Havzası, İran-Anadolu ve Kafkasya sıcak noktaları.
https://www.biyologlar.com/essiz-ancak-yogun-tehdit-altinda-olan-bir-bolge-anadolu -
Lycaena tityrus - İsli Bakır Kelebeği
Fotoğraf: Prof.Dr. Ahmet KARATAŞ
https://www.biyologlar.com/lycaena-tityrus-isli-bakir-kelebegi -
Jeofiziksel değil, çevresel bir bariyer: Anadolu Diyagonali
Şekil 1. Anadolu ve yakın çevresinde biyolojik çeşitlilik sıcak noktaları.
https://www.biyologlar.com/jeofiziksel-degil-cevresel-bir-bariyer-anadolu-diyagonali -
Hacking the programs of cancer stem cells
All tumor cells are the offspring of a single, aberrant cell, but they are not all alike. Only a few retain the capacity of the original cell to create an entire tumor.
https://www.biyologlar.com/hacking-the-programs-of-cancer-stem-cells -
Clues contained in ancient brain point to the origin of heads in early animals
A new study from the University of Cambridge has identified one of the oldest fossil brains ever discovered - more than 500 million years old - and used it to help determine how heads first evolved in early animals. The results, published today (7 May) in the journal Current Biology, identify a key point in the evolutionary transition from soft to hard bodies in early ancestors of arthropods, the group that contains modern insects, crustaceans and spiders. The study looked at two types of...
https://www.biyologlar.com/clues-contained-in-ancient-brain-point-to-the-origin-of-heads-in-early-animals -
Male hormones help lemur females rule
Lemur girls behave more like the guys, thanks to a little testosterone, according to a new study. Males rule in most of the animal world. But when it comes to conventional gender roles, lemurs -- distant primate cousins of ours -- buck the trend. It's not uncommon for lady lemurs to bite their mates, snatch a piece of fruit from their hands, whack them in the head or shove them out of prime sleeping spots. Females mark their territories with distinctive scents just as often as the males do....
https://www.biyologlar.com/male-hormones-help-lemur-females-rule -
Lowly 'new girl' chimps form stronger female bonds
Low-ranking "new girl" chimpanzees seek out other gal pals with similar status, finds a new study of social relationships in the wild apes. The study is available online and is scheduled to appear in the July 2015 issue of the journal Animal Behaviour. Unlike most primates, female chimps are loners compared to males. "They spend about half their time alone or with dependent kids," said Duke University research scientist Steffen Foerster, who co-authored the study. "Chimpanzee females' more...
https://www.biyologlar.com/lowly-new-girl-chimps-form-stronger-female-bonds -
Thousands on one chip: New method to study proteins
Protein microarrays like this allow the investigation of thousands of proteins in a single experiment. Microarrays are only a few centimeters in size and host thousands of individual test spots...
https://www.biyologlar.com/thousands-on-one-chip-new-method-to-study-proteins -
Thousands on one chip: New method to study proteins
Protein microarrays like this allow the investigation of thousands of proteins in a single experiment. Microarrays are only a few centimeters in size and host thousands of individual test spots...
https://www.biyologlar.com/thousands-on-one-chip-new-method-to-study-proteins -
DNA breaks in nerve cells' ancestors cluster in specific genes
The genome of developing brain cells harbors 27 clusters or hotspots where its DNA is much more likely to break in some places than others, researchers from the Program in Cellular and Molecular Medicine (PCMM) at Boston Children's Hospital, Harvard Medical School, and the Howard Hughes Medical Institute report in the journal Cell. Those hotspots appear in genes associated with brain tumors and a number of neurodevelopmental and neuropsychiatric conditions, raising new questions about these...
https://www.biyologlar.com/dna-breaks-in-nerve-cells-ancestors-cluster-in-specific-genes -
DNA breaks in nerve cells' ancestors cluster in specific genes
The genome of developing brain cells harbors 27 clusters or hotspots where its DNA is much more likely to break in some places than others, researchers from the Program in Cellular and Molecular Medicine (PCMM) at Boston Children's Hospital, Harvard Medical School, and the Howard Hughes Medical Institute report in the journal Cell. Those hotspots appear in genes associated with brain tumors and a number of neurodevelopmental and neuropsychiatric conditions, raising new questions about these...
https://www.biyologlar.com/dna-breaks-in-nerve-cells-ancestors-cluster-in-specific-genes -
Tracking the viral parasites cruising our waterways
Humans aren't the only ones who like to cruise along the waterways, so do viruses. For the first time, a map of fecal viruses traveling our global waterways has been created using modeling methods to aid in assessing water quality worldwide. "Many countries are at risk of serious public health hazards due to lack of basic sanitation," said Joan Rose, Homer Nowlin Chair in water research at Michigan State University. "With this map, however, we can assess where viruses are being discharged from...
https://www.biyologlar.com/tracking-the-viral-parasites-cruising-our-waterways -
The first long-horned beetle giving birth to live young discovered in Borneo
A remarkably high diversity of the wingless long-horned beetles in the mountains of northern Borneo is reported by three Czech researchers from the Palacký University, Olomouc, Czech Republic. Apart from the genera and species new to science, the entomologists report the first case of reproduction by live birth in this rarely collected group of beetles. Generally, insects are oviparous, which means that their females lay eggs and the embryonic development occurs outside the female's body. On...
https://www.biyologlar.com/the-first-long-horned-beetle-giving-birth-to-live-young-discovered-in-borneo -
The first long-horned beetle giving birth to live young discovered in Borneo
A remarkably high diversity of the wingless long-horned beetles in the mountains of northern Borneo is reported by three Czech researchers from the Palacký University, Olomouc, Czech Republic. Apart from the genera and species new to science, the entomologists report the first case of reproduction by live birth in this rarely collected group of beetles. Generally, insects are oviparous, which means that their females lay eggs and the embryonic development occurs outside the female's body. On...
https://www.biyologlar.com/the-first-long-horned-beetle-giving-birth-to-live-young-discovered-in-borneo -
Mouse antibodies pinpoint Zika's weak spots
This image shows the mapping of the three distinct Zika virus DIII epitopes onto the mature virion
https://www.biyologlar.com/mouse-antibodies-pinpoint-zikas-weak-spots -
Mouse antibodies pinpoint Zika's weak spots
This image shows the mapping of the three distinct Zika virus DIII epitopes onto the mature virion
https://www.biyologlar.com/mouse-antibodies-pinpoint-zikas-weak-spots -
Discovery: Mantis shrimp use UV color spots, chemical cues to size up opponents
A mantis shrimp displaying its meral spots, visible as two purple dots.
https://www.biyologlar.com/discovery-mantis-shrimp-use-uv-color-spots-chemical-cues-to-size-up-opponents -
Genomics solutions to the riddle of the tobacco hornworm sphinx moth
Manduca sexta caterpillars can grow up to 10 cm long making them ideal for laboratory experiments to investigate their biochemistry and physiology.
https://www.biyologlar.com/genomics-solutions-to-the-riddle-of-the-tobacco-hornworm-sphinx-moth -
Biyoçeşitlilik Üzerine
Biyoçeşitlilik bir ekosistem, biyom veya biyosferin tamamında bulunan tüm yaşam formlarının çeşitliliğidir.Biyoçeşitliliğin tüm öğeleri birbirleriyle etkileşim halindedirler. Ekosistemin bir halkasında gözlenen değişimin etkileri birçok türe yansıyabilmektedir. Bu etkileşimlerde meydana gelebilecek olumsuz değişimler elbette insan (Homo sapiens) türünü de etkileyecektir. Dünyayı küresel olarak değiştirme yeteneğine sahip olan insan türünün tüm dengeleri...
https://www.biyologlar.com/biyocesitlilik-uzerine -
Nükleersiz Türkiye için kürekle Karadeniz!
1999 yılından günümüze kadar yurt içi ve dışında uzun süreli projelere imza atmış olan Hüseyin Ürkmez , Nükleersiz.org , Yeşil Düşünce girişimiyle Hopa’dan İstanbul’a kadar 1500 km uzunluğundaki Karadeniz’i motorsuz ve yelkensiz olarak kürekle geçecek.
https://www.biyologlar.com/nukleersiz-turkiye-icin-kurekle-karadeniz -
Çitalar Hakkında Şaşırtıcı Gerçekler
Çitaların kürklerinde sadece lekeler (benekler) yerine hem çizgiler ve hemde lekeler (benekler) vardır. Purestock / Getty Görüntüleri
https://www.biyologlar.com/citalar-hakkinda-sasirtici-gercekler -
Jeofiziksel değil, çevresel bir bariyer: Anadolu Diyagonali
Şekil 1. Anadolu ve yakın çevresinde biyolojik çeşitlilik sıcak noktaları.
https://www.biyologlar.com/jeofiziksel-degil-cevresel-bir-bariyer-anadolu-diyagonali-1 -
Deniz tabanındaki en yüksek mikroplastik seviyesi raporlandı
Uluslararası bir araştırma projesi kapsamında yapılan çalışma, deniz tabanının sadece bir metrekaresini kapsayan ince bir tabakasında 1,9 milyon mikroplastik parçasının bulunduğunu ortaya çıkardı. Böylelikle deniz tabanında bu zamana kadarki en yüksek mikroplastik seviyesi kaydedilmiş oldu.
https://www.biyologlar.com/deniz-tabanindaki-en-yuksek-mikroplastik-seviyesi-raporlandi