Enigmatic tooth from the Badenian - any idea?

Hello Everyone! Does anyone have any idea on the ID of this tooth? It is from Badenian marine sediment, dominated by fish teeth. This one looks more like a reptile tooth for me, however, I have...

10 November 2017 6,706 0 View

Is there any published information on the acid-resistance of ganoine?

31 December 2016 8,490 1 View

Does anyone have good papers on the fish genera Aetheolepis and Heterostrophus?

I am looking for figured and/or drawn specimens of Aetheolepis and Heterostrophus (both are dapediids). Any recommendations are welcome!Additional: if anyone has this paper (version with plates),...

11 December 2016 5,998 3 View

Can someone ID this fish vertebra?

03 April 2016 1,072 5 View

Vidalamiinae vertebrae and/ or teeth?

Could somebody recommend me papers on Vidalamiinae teeth and/ or vertebrae? Isolated material is preferred. I already have the great work of Grande and Bemis, but similarly detailful papers are...

03 April 2016 1,132 2 View

Could anyone recommend literature to me on the palaeobiogeography and/or the origin of Salmoniform, Ellimichthyform and Elopiform fishes?

The main thing I need to know, that is any of them a Gondwanan-derived taxon? Any paper could be important! Thank You!

03 April 2016 1,573 5 View

Strange surface of a bone-fragment?

I had some problem in ID this bone-element. It has a pattern of tubercle-like dots on the outer surface. Does anyone have any idea on what it could be?Have a nice day!

03 April 2016 5,545 17 View

Could this be an amiiform basioccipital?

03 April 2016 7,989 5 View

Binary Logistic Generalized Linear Mixed model in SPSS. Is it doable?

I want to analyses the proportion of swimming sperm of three species of fish in two salinities. To analyse the proportion of swimming sperm in a Generalized Linear Model, I would use a Binary...

03 March 2021 2,297 3 View

Would fecal samples stored at -20C for over a year impact metagenomic analysis?

Dear All, I have access to some rodent fecal samples that have been stored at -20C instead of -80C. Anyone have experience with the impact of stowage condition on comparative metagenomic analysis...

01 March 2021 2,512 1 View

Where to find data on trees in tropical agroforestry?

Hi, I'm looking for data (mainly related to management: growth rate, canopy size, soil and climate preferences, etc.) about tropical trees used in tropical agroforestry. Have you ever heard about...

28 February 2021 7,356 8 View

Good morning research fellows, Has anyone worked with senna alata plant extract on any kind of fish?

Literatures on the piscicidal effect of sennaa alata is scanty. if you have any related litrature either in the bark, leaves or roots used as treatment to any aquatic organism please kindly help...

28 February 2021 9,138 2 View

The Shannon's index is inversely proportional to Simpson's index (1-D)?

I'm having a problem with my bloxplot with Shannon's and Simpson's indexs. The value of Shannon for my Community 1 indicating higher diversity (in relation of the Community 2), but have lower...

26 February 2021 3,033 9 View

Is IMPACT FACTOR justified in case of Taxonomy?

There is huge pressure of getting good impact factor on scholars now a days. On the other hand Taxonomy is a very dry subject and the concerned papers can only get citation in same group of organism.

26 February 2021 5,851 1 View

Experimental Design: How deal with pseudreplicates with immunological and clinical-chemical paramaeters?

Hello everybody, I am investigating the influence of a toxinon various clinical-chemical and haematological parameters in fish. I have three treatments (control, low dose, high dose) in my...

24 February 2021 1,243 1 View

Hi i want to ask that in order to find out LC 50 (96 hours) of particular toxin for fish. Should we keep the animals with food or without food?

if we expose the fish after acclimatization to particular toxin in order to find out LC 50 (96 hours).Should we keep the fish off feed or with feed for that duration. Some literature show that...

24 February 2021 357 2 View

Measuring Total immunoglobulin whole-body of fish larvae?

Hi Dear All, I prepared the extract of fish larvae whole body with PBS. Then protein concentration of the whole-body extraction samples determined by the Folin-Ceiocalteu-Phenol method (Lowry...

17 February 2021 1,971 3 View

What is the identity of additional bands found during fish gut microbiome 16S V4 PCR amplification?

Hi, I am carrying out test PCRs for 16S amplicon sequencing on Illumina MiSeq. I am using standard V4 primers: 515F/806R. The aim is to profile the microbiome of fish guts under different...

16 February 2021 5,668 6 View